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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-02-04 11:03:20 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-02-04 11:03:20 -0800 |
| commit | 4d4bac4499e9955521af80198063ef9c2f2bd634 (patch) | |
| tree | b02fb1f3d343d3a4a9864be18eec04e10f43d410 /drivers | |
| parent | 7fa40910e0bf5ef32eca49595d950cb24f6402bf (diff) | |
| parent | 9298b4aad37e8c6962edcdbd0b62620adb207d03 (diff) | |
| download | linux-4d4bac4499e9955521af80198063ef9c2f2bd634.tar.gz linux-4d4bac4499e9955521af80198063ef9c2f2bd634.tar.bz2 linux-4d4bac4499e9955521af80198063ef9c2f2bd634.zip | |
Merge tag 'usb-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: patches for v3.20 merge window
Here's the big pull request for Gadgets and PHYs. It's
a total of 217 non-merge commits with pretty much everything
being touched.
The most important bits are a ton of new documentation for
almost all usb gadget functions, a new isp1760 UDC driver,
several improvements to the old net2280 UDC driver, and
some minor tracepoint improvements to dwc3.
Other than that, a big list of minor cleanups, smaller bugfixes
and new features all over the place.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers')
87 files changed, 7089 insertions, 2218 deletions
diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c index eb178fcb7954..bd70ea05708b 100644 --- a/drivers/staging/emxx_udc/emxx_udc.c +++ b/drivers/staging/emxx_udc/emxx_udc.c @@ -1608,7 +1608,7 @@ static int std_req_get_status(struct nbu2ss_udc *udc) switch (recipient) { case USB_RECIP_DEVICE: if (udc->ctrl.wIndex == 0x0000) { - if (udc->self_powered) + if (udc->gadget.is_selfpowered) status_data |= (1 << USB_DEVICE_SELF_POWERED); if (udc->remote_wakeup) @@ -3117,7 +3117,7 @@ static int nbu2ss_gad_wakeup(struct usb_gadget *pgadget) static int nbu2ss_gad_set_selfpowered(struct usb_gadget *pgadget, int is_selfpowered) { - struct nbu2ss_udc *udc; + struct nbu2ss_udc *udc; unsigned long flags; /* INFO("=== %s()\n", __func__); */ @@ -3130,7 +3130,7 @@ static int nbu2ss_gad_set_selfpowered(struct usb_gadget *pgadget, udc = container_of(pgadget, struct nbu2ss_udc, gadget); spin_lock_irqsave(&udc->lock, flags); - udc->self_powered = (is_selfpowered != 0); + pgadget->is_selfpowered = (is_selfpowered != 0); spin_unlock_irqrestore(&udc->lock, flags); return 0; @@ -3308,7 +3308,7 @@ static int __init nbu2ss_drv_contest_init( spin_lock_init(&udc->lock); udc->dev = &pdev->dev; - udc->self_powered = 1; + udc->gadget.is_selfpowered = 1; udc->devstate = USB_STATE_NOTATTACHED; udc->pdev = pdev; udc->mA = 0; diff --git a/drivers/staging/emxx_udc/emxx_udc.h b/drivers/staging/emxx_udc/emxx_udc.h index ee1b80d705fa..202e2dc72bba 100644 --- a/drivers/staging/emxx_udc/emxx_udc.h +++ b/drivers/staging/emxx_udc/emxx_udc.h @@ -624,7 +624,6 @@ struct nbu2ss_udc { unsigned linux_suspended:1; unsigned linux_resume:1; unsigned usb_suspended:1; - unsigned self_powered:1; unsigned remote_wakeup:1; unsigned udc_enabled:1; diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index ae481c37a208..8ed451dd651e 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -104,6 +104,8 @@ source "drivers/usb/dwc2/Kconfig" source "drivers/usb/chipidea/Kconfig" +source "drivers/usb/isp1760/Kconfig" + comment "USB port drivers" if USB diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile index d7be71778059..2f1e2aa42b44 100644 --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_USB) += core/ obj-$(CONFIG_USB_DWC3) += dwc3/ obj-$(CONFIG_USB_DWC2) += dwc2/ +obj-$(CONFIG_USB_ISP1760) += isp1760/ obj-$(CONFIG_USB_MON) += mon/ @@ -23,7 +24,6 @@ obj-$(CONFIG_USB_ISP1362_HCD) += host/ obj-$(CONFIG_USB_U132_HCD) += host/ obj-$(CONFIG_USB_R8A66597_HCD) += host/ obj-$(CONFIG_USB_HWA_HCD) += host/ -obj-$(CONFIG_USB_ISP1760_HCD) += host/ obj-$(CONFIG_USB_IMX21_HCD) += host/ obj-$(CONFIG_USB_FSL_MPH_DR_OF) += host/ obj-$(CONFIG_USB_FUSBH200_HCD) += host/ diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 4fe18ce3bd5a..ff451048c1ac 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -819,8 +819,8 @@ __acquires(hwep->lock) } if ((setup->bRequestType & USB_RECIP_MASK) == USB_RECIP_DEVICE) { - /* Assume that device is bus powered for now. */ - *(u16 *)req->buf = ci->remote_wakeup << 1; + *(u16 *)req->buf = (ci->remote_wakeup << 1) | + ci->gadget.is_selfpowered; } else if ((setup->bRequestType & USB_RECIP_MASK) \ == USB_RECIP_ENDPOINT) { dir = (le16_to_cpu(setup->wIndex) & USB_ENDPOINT_DIR_MASK) ? @@ -1520,6 +1520,19 @@ static int ci_udc_vbus_draw(struct usb_gadget *_gadget, unsigned ma) return -ENOTSUPP; } +static int ci_udc_selfpowered(struct usb_gadget *_gadget, int is_on) +{ + struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget); + struct ci_hw_ep *hwep = ci->ep0in; + unsigned long flags; + + spin_lock_irqsave(hwep->lock, flags); + _gadget->is_selfpowered = (is_on != 0); + spin_unlock_irqrestore(hwep->lock, flags); + + return 0; +} + /* Change Data+ pullup status * this func is used by usb_gadget_connect/disconnet */ @@ -1549,6 +1562,7 @@ static int ci_udc_stop(struct usb_gadget *gadget); static const struct usb_gadget_ops usb_gadget_ops = { .vbus_session = ci_udc_vbus_session, .wakeup = ci_udc_wakeup, + .set_selfpowered = ci_udc_selfpowered, .pullup = ci_udc_pullup, .vbus_draw = ci_udc_vbus_draw, .udc_start = ci_udc_start, diff --git a/drivers/usb/dwc2/Kconfig b/drivers/usb/dwc2/Kconfig index b323c4c11b0a..76b9ba4dc925 100644 --- a/drivers/usb/dwc2/Kconfig +++ b/drivers/usb/dwc2/Kconfig @@ -23,7 +23,7 @@ choice config USB_DWC2_HOST bool "Host only mode" - depends on USB + depends on USB=y || (USB_DWC2=m && USB) help The Designware USB2.0 high-speed host controller integrated into many SoCs. Select this option if you want the @@ -42,7 +42,7 @@ config USB_DWC2_PERIPHERAL config USB_DWC2_DUAL_ROLE bool "Dual Role mode" - depends on (USB=y || USB=USB_DWC2) && (USB_GADGET=y || USB_GADGET=USB_DWC2) + depends on (USB=y && USB_GADGET=y) || (USB_DWC2=m && USB && USB_GADGET) help Select this option if you want the driver to work in a dual-role mode. In this mode both host and gadget features are enabled, and diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 7605850b7a9c..d5197d492e21 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -462,7 +462,7 @@ int dwc2_core_init(struct dwc2_hsotg *hsotg, bool select_phy, int irq) dwc2_enable_common_interrupts(hsotg); /* - * Do device or host intialization based on mode during PCD and + * Do device or host initialization based on mode during PCD and * HCD initialization */ if (dwc2_is_host_mode(hsotg)) { diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 7a70a1349334..f74304b12652 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -108,7 +108,7 @@ struct s3c_hsotg_req; * @halted: Set if the endpoint has been halted. * @periodic: Set if this is a periodic ep, such as Interrupt * @isochronous: Set if this is a isochronous ep - * @sent_zlp: Set if we've sent a zero-length packet. + * @send_zlp: Set if we need to send a zero-length packet. * @total_data: The total number of data bytes done. * @fifo_size: The size of the FIFO (for periodic IN endpoints) * @fifo_load: The amount of data loaded into the FIFO (periodic IN) @@ -149,7 +149,7 @@ struct s3c_hsotg_ep { unsigned int halted:1; unsigned int periodic:1; unsigned int isochronous:1; - unsigned int sent_zlp:1; + unsigned int send_zlp:1; char name[10]; }; @@ -158,14 +158,12 @@ struct s3c_hsotg_ep { * struct s3c_hsotg_req - data transfer request * @req: The USB gadget request * @queue: The list of requests for the endpoint this is queued for. - * @in_progress: Has already had size/packets written to core - * @mapped: DMA buffer for this request has been mapped via dma_map_single(). + * @saved_req_buf: variable to save req.buf when bounce buffers are used. */ struct s3c_hsotg_req { struct usb_request req; struct list_head queue; - unsigned char in_progress; - unsigned char mapped; + void *saved_req_buf; }; #if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE) @@ -193,6 +191,22 @@ enum dwc2_lx_state { DWC2_L3, /* Off state */ }; +/* + * Gadget periodic tx fifo sizes as used by legacy driver + * EP0 is not included + */ +#define DWC2_G_P_LEGACY_TX_FIFO_SIZE {256, 256, 256, 256, 768, 768, 768, \ + 768, 0, 0, 0, 0, 0, 0, 0} + +/* Gadget ep0 states */ +enum dwc2_ep0_state { + DWC2_EP0_SETUP, + DWC2_EP0_DATA_IN, + DWC2_EP0_DATA_OUT, + DWC2_EP0_STATUS_IN, + DWC2_EP0_STATUS_OUT, +}; + /** * struct dwc2_core_params - Parameters for configuring the core * @@ -381,7 +395,7 @@ struct dwc2_core_params { * @power_optimized Are power optimizations enabled? * @num_dev_ep Number of device endpoints available * @num_dev_perio_in_ep Number of device periodic IN endpoints - * avaialable + * available * @dev_token_q_depth Device Mode IN Token Sequence Learning Queue * Depth * 0 to 30 @@ -434,6 +448,9 @@ struct dwc2_hw_params { u32 snpsid; }; +/* Size of control and EP0 buffers */ +#define DWC2_CTRL_BUFF_SIZE 8 + /** * struct dwc2_hsotg - Holds the state of the driver, including the non-periodic * and periodic schedules @@ -552,14 +569,20 @@ struct dwc2_hw_params { * @num_of_eps: Number of available EPs (excluding EP0) * @debug_root: Root directrory for debugfs. * @debug_file: Main status file for debugfs. + * @debug_testmode: Testmode status file for debugfs. * @debug_fifo: FIFO status file for debugfs. * @ep0_reply: Request used for ep0 reply. * @ep0_buff: Buffer for EP0 reply data, if needed. * @ctrl_buff: Buffer for EP0 control requests. * @ctrl_req: Request for EP0 control packets. - * @setup: NAK management for EP0 SETUP + * @ep0_state: EP0 control transfers state + * @test_mode: USB test mode requested by the host * @last_rst: Time of last reset * @eps: The endpoints being supplied to the gadget framework + * @g_using_dma: Indicate if dma usage is enabled + * @g_rx_fifo_sz: Contains rx fifo size value + * @g_np_g_tx_fifo_sz: Contains Non-Periodic tx fifo size value + * @g_tx_fifo_sz: Contains tx fifo size value per endpoints */ struct dwc2_hsotg { struct device *dev; @@ -591,6 +614,7 @@ struct dwc2_hsotg { struct dentry *debug_root; struct dentry *debug_file; + struct dentry *debug_testmode; struct dentry *debug_fifo; /* DWC OTG HW Release versions */ @@ -684,15 +708,21 @@ struct dwc2_hsotg { struct usb_request *ep0_reply; struct usb_request *ctrl_req; - u8 ep0_buff[8]; - u8 ctrl_buff[8]; + void *ep0_buff; + void *ctrl_buff; + enum dwc2_ep0_state ep0_state; + u8 test_mode; struct usb_gadget gadget; unsigned int enabled:1; unsigned int connected:1; - unsigned int setup:1; unsigned long last_rst; - struct s3c_hsotg_ep *eps; + struct s3c_hsotg_ep *eps_in[MAX_EPS_CHANNELS]; + struct s3c_hsotg_ep *eps_out[MAX_EPS_CHANNELS]; + u32 g_using_dma; + u32 g_rx_fifo_sz; + u32 g_np_g_tx_fifo_sz; + u32 g_tx_fifo_sz[MAX_EPS_CHANNELS]; #endif /* CONFIG_USB_DWC2_PERIPHERAL || CONFIG_USB_DWC2_DUAL_ROLE */ }; @@ -969,7 +999,8 @@ extern int s3c_hsotg_remove(struct dwc2_hsotg *hsotg); extern int s3c_hsotg_suspend(struct dwc2_hsotg *dwc2); extern int s3c_hsotg_resume(struct dwc2_hsotg *dwc2); extern int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq); -extern void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *dwc2); +extern void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *dwc2, + bool reset); extern void s3c_hsotg_core_connect(struct dwc2_hsotg *hsotg); extern void s3c_hsotg_disconnect(struct dwc2_hsotg *dwc2); #else @@ -981,7 +1012,8 @@ static inline int s3c_hsotg_resume(struct dwc2_hsotg *dwc2) { return 0; } static inline int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) { return 0; } -static inline void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *dwc2) {} +static inline void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *dwc2, + bool reset) {} static inline void s3c_hsotg_core_connect(struct dwc2_hsotg *hsotg) {} static inline void s3c_hsotg_disconnect(struct dwc2_hsotg *dwc2) {} #endif diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 79242008085b..6a30887082cd 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -35,6 +35,7 @@ #include <linux/usb/gadget.h> #include <linux/usb/phy.h> #include <linux/platform_data/s3c-hsotg.h> +#include <linux/uaccess.h> #include "core.h" #include "hw.h" @@ -65,7 +66,16 @@ static inline void __bic32(void __iomem *ptr, u32 val) writel(readl(ptr) & ~val, ptr); } -/* forward decleration of functions */ +static inline struct s3c_hsotg_ep *index_to_ep(struct dwc2_hsotg *hsotg, + u32 ep_index, u32 dir_in) +{ + if (dir_in) + return hsotg->eps_in[ep_index]; + else + return hsotg->eps_out[ep_index]; +} + +/* forward declaration of functions */ static void s3c_hsotg_dump(struct dwc2_hsotg *hsotg); /** @@ -85,11 +95,11 @@ static void s3c_hsotg_dump(struct dwc2_hsotg *hsotg); * a core reset. This means we either need to fix the gadgets to take * account of DMA alignment, or add bounce buffers (yuerk). * - * Until this issue is sorted out, we always return 'false'. + * g_using_dma is set depending on dts flag. */ static inline bool using_dma(struct dwc2_hsotg *hsotg) { - return false; /* support is not complete */ + return hsotg->g_using_dma; } /** @@ -165,15 +175,18 @@ static void s3c_hsotg_init_fifo(struct dwc2_hsotg *hsotg) { unsigned int ep; unsigned int addr; - unsigned int size; int timeout; u32 val; - /* set FIFO sizes to 2048/1024 */ + /* Reset fifo map if not correctly cleared during previous session */ + WARN_ON(hsotg->fifo_map); + hsotg->fifo_map = 0; - writel(2048, hsotg->regs + GRXFSIZ); - writel((2048 << FIFOSIZE_STARTADDR_SHIFT) | - (1024 << FIFOSIZE_DEPTH_SHIFT), hsotg->regs + GNPTXFSIZ); + /* set RX/NPTX FIFO sizes */ + writel(hsotg->g_rx_fifo_sz, hsotg->regs + GRXFSIZ); + writel((hsotg->g_rx_fifo_sz << FIFOSIZE_STARTADDR_SHIFT) | + (hsotg->g_np_g_tx_fifo_sz << FIFOSIZE_DEPTH_SHIFT), + hsotg->regs + GNPTXFSIZ); /* * arange all the rest of the TX FIFOs, as some versions of this @@ -183,35 +196,21 @@ static void s3c_hsotg_init_fifo(struct dwc2_hsotg *hsotg) */ /* start at the end of the GNPTXFSIZ, rounded up */ - addr = 2048 + 1024; + addr = hsotg->g_rx_fifo_sz + hsotg->g_np_g_tx_fifo_sz; /* - * Because we have not enough memory to have each TX FIFO of size at - * least 3072 bytes (the maximum single packet size), we create four - * FIFOs of lenght 1024, and four of length 3072 bytes, and assing + * Configure fifos sizes from provided configuration and assign * them to endpoints dynamically according to maxpacket size value of * given endpoint. */ - - /* 256*4=1024 bytes FIFO length */ - size = 256; - for (ep = 1; ep <= 4; ep++) { - val = addr; - val |= size << FIFOSIZE_DEPTH_SHIFT; - WARN_ONCE(addr + size > hsotg->fifo_mem, - "insufficient fifo memory"); - addr += size; - - writel(val, hsotg->regs + DPTXFSIZN(ep)); - } - /* 768*4=3072 bytes FIFO length */ - size = 768; - for (ep = 5; ep <= 8; ep++) { + for (ep = 1; ep < MAX_EPS_CHANNELS; ep++) { + if (!hsotg->g_tx_fifo_sz[ep]) + continue; val = addr; - val |= size << FIFOSIZE_DEPTH_SHIFT; - WARN_ONCE(addr + size > hsotg->fifo_mem, + val |= hsotg->g_tx_fifo_sz[ep] << FIFOSIZE_DEPTH_SHIFT; + WARN_ONCE(addr + hsotg->g_tx_fifo_sz[ep] > hsotg->fifo_mem, "insufficient fifo memory"); - addr += size; + addr += hsotg->g_tx_fifo_sz[ep]; writel(val, hsotg->regs + DPTXFSIZN(ep)); } @@ -236,6 +235,7 @@ static void s3c_hsotg_init_fifo(struct dwc2_hsotg *hsotg) dev_err(hsotg->dev, "%s: timeout flushing fifos (GRSTCTL=%08x)\n", __func__, val); + break; } udelay(1); @@ -566,11 +566,6 @@ static void s3c_hsotg_start_req(struct dwc2_hsotg *hsotg, length = ureq->length - ureq->actual; dev_dbg(hsotg->dev, "ureq->length:%d ureq->actual:%d\n", ureq->length, ureq->actual); - if (0) - dev_dbg(hsotg->dev, - "REQ buf %p len %d dma %pad noi=%d zp=%d snok=%d\n", - ureq->buf, length, &ureq->dma, - ureq->no_interrupt, ureq->zero, ureq->short_not_ok); maxreq = get_ep_limit(hs_ep); if (length > maxreq) { @@ -604,14 +599,15 @@ static void s3c_hsotg_start_req(struct dwc2_hsotg *hsotg, else epsize = 0; - if (index != 0 && ureq->zero) { - /* - * test for the packets being exactly right for the - * transfer - */ - - if (length == (packets * hs_ep->ep.maxpacket)) - packets++; + /* + * zero length packet should be programmed on its own and should not + * be counted in DIEPTSIZ.PktCnt with other packets. + */ + if (dir_in && ureq->zero && !continuing) { + /* Test if zlp is actually required. */ + if ((ureq->length >= hs_ep->ep.maxpacket) && + !(ureq->length % hs_ep->ep.maxpacket)) + hs_ep->send_zlp = 1; } epsize |= DXEPTSIZ_PKTCNT(packets); @@ -644,15 +640,12 @@ static void s3c_hsotg_start_req(struct dwc2_hsotg *hsotg, ctrl |= DXEPCTL_EPENA; /* ensure ep enabled */ ctrl |= DXEPCTL_USBACTEP; - dev_dbg(hsotg->dev, "setup req:%d\n", hsotg->setup); + dev_dbg(hsotg->dev, "ep0 state:%d\n", hsotg->ep0_state); /* For Setup request do not clear NAK */ - if (hsotg->setup && index == 0) - hsotg->setup = 0; - else + if (!(index == 0 && hsotg->ep0_state == DWC2_EP0_SETUP)) ctrl |= DXEPCTL_CNAK; /* clear NAK set by core */ - dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", __func__, ctrl); writel(ctrl, hsotg->regs + epctrl_reg); @@ -686,7 +679,7 @@ static void s3c_hsotg_start_req(struct dwc2_hsotg *hsotg, /* check ep is enabled */ if (!(readl(hsotg->regs + epctrl_reg) & DXEPCTL_EPENA)) - dev_warn(hsotg->dev, + dev_dbg(hsotg->dev, "ep%d: failed to become enabled (DXEPCTL=0x%08x)?\n", index, readl(hsotg->regs + epctrl_reg)); @@ -733,6 +726,59 @@ dma_error: return -EIO; } +static int s3c_hsotg_handle_unaligned_buf_start(struct dwc2_hsotg *hsotg, + struct s3c_hsotg_ep *hs_ep, struct s3c_hsotg_req *hs_req) +{ + void *req_buf = hs_req->req.buf; + + /* If dma is not being used or buffer is aligned */ + if (!using_dma(hsotg) || !((long)req_buf & 3)) + return 0; + + WARN_ON(hs_req->saved_req_buf); + + dev_dbg(hsotg->dev, "%s: %s: buf=%p length=%d\n", __func__, + hs_ep->ep.name, req_buf, hs_req->req.length); + + hs_req->req.buf = kmalloc(hs_req->req.length, GFP_ATOMIC); + if (!hs_req->req.buf) { + hs_req->req.buf = req_buf; + dev_err(hsotg->dev, + "%s: unable to allocate memory for bounce buffer\n", + __func__); + return -ENOMEM; + } + + /* Save actual buffer */ + hs_req->saved_req_buf = req_buf; + + if (hs_ep->dir_in) + memcpy(hs_req->req.buf, req_buf, hs_req->req.length); + return 0; +} + +static void s3c_hsotg_handle_unaligned_buf_complete(struct dwc2_hsotg *hsotg, + struct s3c_hsotg_ep *hs_ep, struct s3c_hsotg_req *hs_req) +{ + /* If dma is not being used or buffer was aligned */ + if (!using_dma(hsotg) || !hs_req->saved_req_buf) + return; + + dev_dbg(hsotg->dev, "%s: %s: status=%d actual-length=%d\n", __func__, + hs_ep->ep.name, hs_req->req.status, hs_req->req.actual); + + /* Copy data from bounce buffer on successful out transfer */ + if (!hs_ep->dir_in && !hs_req->req.status) + memcpy(hs_req->saved_req_buf, hs_req->req.buf, + hs_req->req.actual); + + /* Free bounce buffer */ + kfree(hs_req->req.buf); + + hs_req->req.buf = hs_req->saved_req_buf; + hs_req->saved_req_buf = NULL; +} + static int s3c_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req, gfp_t gfp_flags) { @@ -740,6 +786,7 @@ static int s3c_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req, struct s3c_hsotg_ep *hs_ep = our_ep(ep); struct dwc2_hsotg *hs = hs_ep->parent; bool first; + int ret; dev_dbg(hs->dev, "%s: req %p: %d@%p, noi=%d, zero=%d, snok=%d\n", ep->name, req, req->length, req->buf, req->no_interrupt, @@ -750,9 +797,13 @@ static int s3c_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req, req->actual = 0; req->status = -EINPROGRESS; + ret = s3c_hsotg_handle_unaligned_buf_start(hs, hs_ep, hs_req); + if (ret) + return ret; + /* if we're using DMA, sync the buffers as necessary */ if (using_dma(hs)) { - int ret = s3c_hsotg_map_dma(hs, hs_ep, req); + ret = s3c_hsotg_map_dma(hs, hs_ep, req); if (ret) return ret; } @@ -819,7 +870,7 @@ static void s3c_hsotg_complete_oursetup(struct usb_ep *ep, static struct s3c_hsotg_ep *ep_from_windex(struct dwc2_hsotg *hsotg, u32 windex) { - struct s3c_hsotg_ep *ep = &hsotg->eps[windex & 0x7F]; + struct s3c_hsotg_ep *ep; int dir = (windex & USB_DIR_IN) ? 1 : 0; int idx = windex & 0x7F; @@ -829,6 +880,8 @@ static struct s3c_hsotg_ep *ep_from_windex(struct dwc2_hsotg *hsotg, if (idx > hsotg->num_of_eps) return NULL; + ep = index_to_ep(hsotg, idx, dir); + if (idx && ep->dir_in != dir) return NULL; @@ -836,6 +889,32 @@ static struct s3c_hsotg_ep *ep_from_windex(struct dwc2_hsotg *hsotg, } /** + * s3c_hsotg_set_test_mode - Enable usb Test Modes + * @hsotg: The driver state. + * @testmode: requested usb test mode + * Enable usb Test Mode requested by the Host. + */ +static int s3c_hsotg_set_test_mode(struct dwc2_hsotg *hsotg, int testmode) +{ + int dctl = readl(hsotg->regs + DCTL); + + dctl &= ~DCTL_TSTCTL_MASK; + switch (testmode) { + case TEST_J: + case TEST_K: + case TEST_SE0_NAK: + case TEST_PACKET: + case TEST_FORCE_EN: + dctl |= testmode << DCTL_TSTCTL_SHIFT; + break; + default: + return -EINVAL; + } + writel(dctl, hsotg->regs + DCTL); + return 0; +} + +/** * s3c_hsotg_send_reply - send reply to control request * @hsotg: The device state * @ep: Endpoint 0 @@ -864,13 +943,15 @@ static int s3c_hsotg_send_reply(struct dwc2_hsotg *hsotg, req->buf = hsotg->ep0_buff; req->length = length; - req->zero = 1; /* always do zero-length final transfer */ + /* + * zero flag is for sending zlp in DATA IN stage. It has no impact on + * STATUS stage. + */ + req->zero = 0; req->complete = s3c_hsotg_complete_oursetup; if (length) memcpy(req->buf, buff, length); - else - ep->sent_zlp = 1; ret = s3c_hsotg_ep_queue(&ep->ep, req, GFP_ATOMIC); if (ret) { @@ -889,7 +970,7 @@ static int s3c_hsotg_send_reply(struct dwc2_hsotg *hsotg, static int s3c_hsotg_process_req_status(struct dwc2_hsotg *hsotg, struct usb_ctrlrequest *ctrl) { - struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; + struct s3c_hsotg_ep *ep0 = hsotg->eps_out[0]; struct s3c_hsotg_ep *ep; __le16 reply; int ret; @@ -953,33 +1034,62 @@ static struct s3c_hsotg_req *get_ep_head(struct s3c_hsotg_ep *hs_ep) } /** - * s3c_hsotg_process_req_featire - process request {SET,CLEAR}_FEATURE + * s3c_hsotg_process_req_feature - process request {SET,CLEAR}_FEATURE * @hsotg: The device state * @ctrl: USB control request */ static int s3c_hsotg_process_req_feature(struct dwc2_hsotg *hsotg, struct usb_ctrlrequest *ctrl) { - struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; + struct s3c_hsotg_ep *ep0 = hsotg->eps_out[0]; struct s3c_hsotg_req *hs_req; bool restart; bool set = (ctrl->bRequest == USB_REQ_SET_FEATURE); struct s3c_hsotg_ep *ep; int ret; bool halted; + u32 recip; + u32 wValue; + u32 wIndex; dev_dbg(hsotg->dev, "%s: %s_FEATURE\n", __func__, set ? "SET" : "CLEAR"); - if (ctrl->bRequestType == USB_RECIP_ENDPOINT) { - ep = ep_from_windex(hsotg, le16_to_cpu(ctrl->wIndex)); + wValue = le16_to_cpu(ctrl->wValue); + wIndex = le16_to_cpu(ctrl->wIndex); + recip = ctrl->bRequestType & USB_RECIP_MASK; + + switch (recip) { + case USB_RECIP_DEVICE: + switch (wValue) { + case USB_DEVICE_TEST_MODE: + if ((wIndex & 0xff) != 0) + return -EINVAL; + if (!set) + return -EINVAL; + + hsotg->test_mode = wIndex >> 8; + ret = s3c_hsotg_send_reply(hsotg, ep0, NULL, 0); + if (ret) { + dev_err(hsotg->dev, + "%s: failed to send reply\n", __func__); + return ret; + } + break; + default: + return -ENOENT; + } + break; + + case USB_RECIP_ENDPOINT: + ep = ep_from_windex(hsotg, wIndex); if (!ep) { dev_dbg(hsotg->dev, "%s: no endpoint for 0x%04x\n", - __func__, le16_to_cpu(ctrl->wIndex)); + __func__, wIndex); return -ENOENT; } - switch (le16_to_cpu(ctrl->wValue)) { + switch (wValue) { case USB_ENDPOINT_HALT: halted = ep->halted; @@ -1006,16 +1116,22 @@ static int s3c_hsotg_process_req_feature(struct dwc2_hsotg *hsotg, hs_req = ep->req; ep->req = NULL; list_del_init(&hs_req->queue); - usb_gadget_giveback_request(&ep->ep, - &hs_req->req); + if (hs_req->req.complete) { + spin_unlock(&hsotg->lock); + usb_gadget_giveback_request( + &ep->ep, &hs_req->req); + spin_lock(&hsotg->lock); + } } /* If we have pending request, then start it */ - restart = !list_empty(&ep->queue); - if (restart) { - hs_req = get_ep_head(ep); - s3c_hsotg_start_req(hsotg, ep, - hs_req, false); + if (!ep->req) { + restart = !list_empty(&ep->queue); + if (restart) { + hs_req = get_ep_head(ep); + s3c_hsotg_start_req(hsotg, ep, + hs_req, false); + } } } @@ -1024,9 +1140,10 @@ static int s3c_hsotg_process_req_feature(struct dwc2_hsotg *hsotg, default: return -ENOENT; } - } else - return -ENOENT; /* currently only deal with endpoint */ - + break; + default: + return -ENOENT; + } return 1; } @@ -1040,7 +1157,7 @@ static void s3c_hsotg_enqueue_setup(struct dwc2_hsotg *hsotg); */ static void s3c_hsotg_stall_ep0(struct dwc2_hsotg *hsotg) { - struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; + struct s3c_hsotg_ep *ep0 = hsotg->eps_out[0]; u32 reg; u32 ctrl; @@ -1080,34 +1197,29 @@ static void s3c_hsotg_stall_ep0(struct dwc2_hsotg *hsotg) static void s3c_hsotg_process_control(struct dwc2_hsotg *hsotg, struct usb_ctrlrequest *ctrl) { - struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; + struct s3c_hsotg_ep *ep0 = hsotg->eps_out[0]; int ret = 0; u32 dcfg; - ep0->sent_zlp = 0; - dev_dbg(hsotg->dev, "ctrl Req=%02x, Type=%02x, V=%04x, L=%04x\n", ctrl->bRequest, ctrl->bRequestType, ctrl->wValue, ctrl->wLength); - /* - * record the direction of the request, for later use when enquing - * packets onto EP0. - */ - - ep0->dir_in = (ctrl->bRequestType & USB_DIR_IN) ? 1 : 0; - dev_dbg(hsotg->dev, "ctrl: dir_in=%d\n", ep0->dir_in); - - /* - * if we've no data with this request, then the last part of the - * transaction is going to implicitly be IN. - */ - if (ctrl->wLength == 0) + if (ctrl->wLength == 0) { ep0->dir_in = 1; + hsotg->ep0_state = DWC2_EP0_STATUS_IN; + } else if (ctrl->bRequestType & USB_DIR_IN) { + ep0->dir_in = 1; + hsotg->ep0_state = DWC2_EP0_DATA_IN; + } else { + ep0->dir_in = 0; + hsotg->ep0_state = DWC2_EP0_DATA_OUT; + } if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { switch (ctrl->bRequest) { case USB_REQ_SET_ADDRESS: + hsotg->connected = 1; dcfg = readl(hsotg->regs + DCFG); dcfg &= ~DCFG_DEVADDR_MASK; dcfg |= (le16_to_cpu(ctrl->wValue) << @@ -1201,9 +1313,11 @@ static void s3c_hsotg_enqueue_setup(struct dwc2_hsotg *hsotg) return; } - hsotg->eps[0].dir_in = 0; + hsotg->eps_out[0]->dir_in = 0; + hsotg->eps_out[0]->send_zlp = 0; + hsotg->ep0_state = DWC2_EP0_SETUP; - ret = s3c_hsotg_ep_queue(&hsotg->eps[0].ep, req, GFP_ATOMIC); + ret = s3c_hsotg_ep_queue(&hsotg->eps_out[0]->ep, req, GFP_ATOMIC); if (ret < 0) { dev_err(hsotg->dev, "%s: failed queue (%d)\n", __func__, ret); /* @@ -1213,6 +1327,32 @@ static void s3c_hsotg_enqueue_setup(struct dwc2_hsotg *hsotg) } } +static void s3c_hsotg_program_zlp(struct dwc2_hsotg *hsotg, + struct s3c_hsotg_ep *hs_ep) +{ + u32 ctrl; + u8 index = hs_ep->index; + u32 epctl_reg = hs_ep->dir_in ? DIEPCTL(index) : DOEPCTL(index); + u32 epsiz_reg = hs_ep->dir_in ? DIEPTSIZ(index) : DOEPTSIZ(index); + + if (hs_ep->dir_in) + dev_dbg(hsotg->dev, "Sending zero-length packet on ep%d\n", + index); + else + dev_dbg(hsotg->dev, "Receiving zero-length packet on ep%d\n", + index); + + writel(DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) | + DXEPTSIZ_XFERSIZE(0), hsotg->regs + + epsiz_reg); + + ctrl = readl(hsotg->regs + epctl_reg); + ctrl |= DXEPCTL_CNAK; /* clear NAK set by core */ + ctrl |= DXEPCTL_EPENA; /* ensure ep enabled */ + ctrl |= DXEPCTL_USBACTEP; + writel(ctrl, hsotg->regs + epctl_reg); +} + /** * s3c_hsotg_complete_request - complete a request given to us * @hsotg: The device state. @@ -1249,6 +1389,8 @@ static void s3c_hsotg_complete_request(struct dwc2_hsotg *hsotg, if (hs_req->req.status == -EINPROGRESS) hs_req->req.status = result; + s3c_hsotg_handle_unaligned_buf_complete(hsotg, hs_ep, hs_req); + hs_ep->req = NULL; list_del_init(&hs_req->queue); @@ -1293,7 +1435,7 @@ static void s3c_hsotg_complete_request(struct dwc2_hsotg *hsotg, */ static void s3c_hsotg_rx_data(struct dwc2_hsotg *hsotg, int ep_idx, int size) { - struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep_idx]; + struct s3c_hsotg_ep *hs_ep = hsotg->eps_out[ep_idx]; struct s3c_hsotg_req *hs_req = hs_ep->req; void __iomem *fifo = hsotg->regs + EPFIFO(ep_idx); int to_read; @@ -1305,7 +1447,7 @@ static void s3c_hsotg_rx_data(struct dwc2_hsotg *hsotg, int ep_idx, int size) u32 epctl = readl(hsotg->regs + DOEPCTL(ep_idx)); int ptr; - dev_warn(hsotg->dev, + dev_dbg(hsotg->dev, "%s: FIFO %d bytes on ep%d but no req (DXEPCTl=0x%08x)\n", __func__, size, ep_idx, epctl); @@ -1345,9 +1487,9 @@ static void s3c_hsotg_rx_data(struct dwc2_hsotg *hsotg, int ep_idx, int size) } /** - * s3c_hsotg_send_zlp - send zero-length packet on control endpoint + * s3c_hsotg_ep0_zlp - send/receive zero-length packet on control endpoint * @hsotg: The device instance - * @req: The request currently on this endpoint + * @dir_in: If IN zlp * * Generate a zero-length IN packet request for terminating a SETUP * transaction. @@ -1356,53 +1498,28 @@ static void s3c_hsotg_rx_data(struct dwc2_hsotg *hsotg, int ep_idx, int size) * currently believed that we do not need to wait for any space in * the TxFIFO. */ -static void s3c_hsotg_send_zlp(struct dwc2_hsotg *hsotg, - struct s3c_hsotg_req *req) +static void s3c_hsotg_ep0_zlp(struct dwc2_hsotg *hsotg, bool dir_in) { - u32 ctrl; + /* eps_out[0] is used in both directions */ + hsotg->eps_out[0]->dir_in = dir_in; + hsotg->ep0_state = dir_in ? DWC2_EP0_STATUS_IN : DWC2_EP0_STATUS_OUT; - if (!req) { - dev_warn(hsotg->dev, "%s: no request?\n", __func__); - return; - } - - if (req->req.length == 0) { - hsotg->eps[0].sent_zlp = 1; - s3c_hsotg_enqueue_setup(hsotg); - return; - } - - hsotg->eps[0].dir_in = 1; - hsotg->eps[0].sent_zlp = 1; - - dev_dbg(hsotg->dev, "sending zero-length packet\n"); - - /* issue a zero-sized packet to terminate this */ - writel(DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) | - DXEPTSIZ_XFERSIZE(0), hsotg->regs + DIEPTSIZ(0)); - - ctrl = readl(hsotg->regs + DIEPCTL0); - ctrl |= DXEPCTL_CNAK; /* clear NAK set by core */ - ctrl |= DXEPCTL_EPENA; /* ensure ep enabled */ - ctrl |= DXEPCTL_USBACTEP; - writel(ctrl, hsotg->regs + DIEPCTL0); + s3c_hsotg_program_zlp(hsotg, hsotg->eps_out[0]); } /** * s3c_hsotg_handle_outdone - handle receiving OutDone/SetupDone from RXFIFO * @hsotg: The device instance * @epnum: The endpoint received from - * @was_setup: Set if processing a SetupDone event. * * The RXFIFO has delivered an OutDone event, which means that the data * transfer for an OUT endpoint has been completed, either by a short * packet or by the finish of a transfer. */ -static void s3c_hsotg_handle_outdone(struct dwc2_hsotg *hsotg, - int epnum, bool was_setup) +static void s3c_hsotg_handle_outdone(struct dwc2_hsotg *hsotg, int epnum) { u32 epsize = readl(hsotg->regs + DOEPTSIZ(epnum)); - struct s3c_hsotg_ep *hs_ep = &hsotg->eps[epnum]; + struct s3c_hsotg_ep *hs_ep = hsotg->eps_out[epnum]; struct s3c_hsotg_req *hs_req = hs_ep->req; struct usb_request *req = &hs_req->req; unsigned size_left = DXEPTSIZ_XFERSIZE_GET(epsize); @@ -1413,6 +1530,13 @@ static void s3c_hsotg_handle_outdone(struct dwc2_hsotg *hsotg, return; } + if (epnum == 0 && hsotg->ep0_state == DWC2_EP0_STATUS_OUT) { + dev_dbg(hsotg->dev, "zlp packet received\n"); + s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0); + s3c_hsotg_enqueue_setup(hsotg); + return; + } + if (using_dma(hsotg)) { unsigned size_done; @@ -1435,12 +1559,6 @@ static void s3c_hsotg_handle_outdone(struct dwc2_hsotg *hsotg, if (req->actual < req->length && size_left == 0) { s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true); return; - } else if (epnum == 0) { - /* - * After was_setup = 1 => - * set CNAK for non Setup requests - */ - hsotg->setup = was_setup ? 0 : 1; } if (req->actual < req->length && req->short_not_ok) { @@ -1453,13 +1571,10 @@ static void s3c_hsotg_handle_outdone(struct dwc2_hsotg *hsotg, */ } - if (epnum == 0) { - /* - * Condition req->complete != s3c_hsotg_complete_setup says: - * send ZLP when we have an asynchronous request from gadget - */ - if (!was_setup && req->complete != s3c_hsotg_complete_setup) - s3c_hsotg_send_zlp(hsotg, hs_req); + if (epnum == 0 && hsotg->ep0_state == DWC2_EP0_DATA_OUT) { + /* Move to STATUS IN */ + s3c_hsotg_ep0_zlp(hsotg, true); + return; } s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, result); @@ -1511,8 +1626,7 @@ static void s3c_hsotg_handle_rx(struct dwc2_hsotg *hsotg) size = grxstsr & GRXSTS_BYTECNT_MASK; size >>= GRXSTS_BYTECNT_SHIFT; - if (1) - dev_dbg(hsotg->dev, "%s: GRXSTSP=0x%08x (%d@%d)\n", + dev_dbg(hsotg->dev, "%s: GRXSTSP=0x%08x (%d@%d)\n", __func__, grxstsr, size, epnum); switch ((status & GRXSTS_PKTSTS_MASK) >> GRXSTS_PKTSTS_SHIFT) { @@ -1525,7 +1639,7 @@ static void s3c_hsotg_handle_rx(struct dwc2_hsotg *hsotg) s3c_hsotg_read_frameno(hsotg)); if (!using_dma(hsotg)) - s3c_hsotg_handle_outdone(hsotg, epnum, false); + s3c_hsotg_handle_outdone(hsotg, epnum); break; case GRXSTS_PKTSTS_SETUPDONE: @@ -1533,8 +1647,13 @@ static void s3c_hsotg_handle_rx(struct dwc2_hsotg *hsotg) "SetupDone (Frame=0x%08x, DOPEPCTL=0x%08x)\n", s3c_hsotg_read_frameno(hsotg), readl(hsotg->regs + DOEPCTL(0))); - - s3c_hsotg_handle_outdone(hsotg, epnum, true); + /* + * Call s3c_hsotg_handle_outdone here if it was not called from + * GRXSTS_PKTSTS_OUTDONE. That is, if the core didn't + * generate GRXSTS_PKTSTS_OUTDONE for setup packet. + */ + if (hsotg->ep0_state == DWC2_EP0_SETUP) + s3c_hsotg_handle_outdone(hsotg, epnum); break; case GRXSTS_PKTSTS_OUTRX: @@ -1547,6 +1666,8 @@ static void s3c_hsotg_handle_rx(struct dwc2_hsotg *hsotg) s3c_hsotg_read_frameno(hsotg), readl(hsotg->regs + DOEPCTL(0))); + WARN_ON(hsotg->ep0_state != DWC2_EP0_SETUP); + s3c_hsotg_rx_data(hsotg, epnum, size); break; @@ -1591,14 +1712,18 @@ static u32 s3c_hsotg_ep0_mps(unsigned int mps) * the hardware control registers to reflect this. */ static void s3c_hsotg_set_ep_maxpacket(struct dwc2_hsotg *hsotg, - unsigned int ep, unsigned int mps) + unsigned int ep, unsigned int mps, unsigned int dir_in) { - struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep]; + struct s3c_hsotg_ep *hs_ep; void __iomem *regs = hsotg->regs; u32 mpsval; u32 mcval; u32 reg; + hs_ep = index_to_ep(hsotg, ep, dir_in); + if (!hs_ep) + return; + if (ep == 0) { /* EP0 is a special case */ mpsval = s3c_hsotg_ep0_mps(mps); @@ -1617,17 +1742,12 @@ static void s3c_hsotg_set_ep_maxpacket(struct dwc2_hsotg *hsotg, hs_ep->ep.maxpacket = mpsval; } - /* - * update both the in and out endpoint controldir_ registers, even - * if one of the directions may not be in use. - */ - - reg = readl(regs + DIEPCTL(ep)); - reg &= ~DXEPCTL_MPS_MASK; - reg |= mpsval; - writel(reg, regs + DIEPCTL(ep)); - - if (ep) { + if (dir_in) { + reg = readl(regs + DIEPCTL(ep)); + reg &= ~DXEPCTL_MPS_MASK; + reg |= mpsval; + writel(reg, regs + DIEPCTL(ep)); + } else { reg = readl(regs + DOEPCTL(ep)); reg &= ~DXEPCTL_MPS_MASK; reg |= mpsval; @@ -1727,9 +1847,21 @@ static void s3c_hsotg_complete_in(struct dwc2_hsotg *hsotg, } /* Finish ZLP handling for IN EP0 transactions */ - if (hsotg->eps[0].sent_zlp) { - dev_dbg(hsotg->dev, "zlp packet received\n"); + if (hs_ep->index == 0 && hsotg->ep0_state == DWC2_EP0_STATUS_IN) { + dev_dbg(hsotg->dev, "zlp packet sent\n"); s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0); + if (hsotg->test_mode) { + int ret; + + ret = s3c_hsotg_set_test_mode(hsotg, hsotg->test_mode); + if (ret < 0) { + dev_dbg(hsotg->dev, "Invalid Test #%d\n", + hsotg->test_mode); + s3c_hsotg_stall_ep0(hsotg); + return; + } + } + s3c_hsotg_enqueue_setup(hsotg); return; } @@ -1756,31 +1888,27 @@ static void s3c_hsotg_complete_in(struct dwc2_hsotg *hsotg, dev_dbg(hsotg->dev, "req->length:%d req->actual:%d req->zero:%d\n", hs_req->req.length, hs_req->req.actual, hs_req->req.zero); - /* - * Check if dealing with Maximum Packet Size(MPS) IN transfer at EP0 - * When sent data is a multiple MPS size (e.g. 64B ,128B ,192B - * ,256B ... ), after last MPS sized packet send IN ZLP packet to - * inform the host that no more data is available. - * The state of req.zero member is checked to be sure that the value to - * send is smaller than wValue expected from host. - * Check req.length to NOT send another ZLP when the current one is - * under completion (the one for which this completion has been called). - */ - if (hs_req->req.length && hs_ep->index == 0 && hs_req->req.zero && - hs_req->req.length == hs_req->req.actual && - !(hs_req->req.length % hs_ep->ep.maxpacket)) { + if (!size_left && hs_req->req.actual < hs_req->req.length) { + dev_dbg(hsotg->dev, "%s trying more for req...\n", __func__); + s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true); + return; + } - dev_dbg(hsotg->dev, "ep0 zlp IN packet sent\n"); - s3c_hsotg_send_zlp(hsotg, hs_req); + /* Zlp for all endpoints, for ep0 only in DATA IN stage */ + if (hs_ep->send_zlp) { + s3c_hsotg_program_zlp(hsotg, hs_ep); + hs_ep->send_zlp = 0; + /* transfer will be completed on next complete interrupt */ + return; + } + if (hs_ep->index == 0 && hsotg->ep0_state == DWC2_EP0_DATA_IN) { + /* Move to STATUS OUT */ + s3c_hsotg_ep0_zlp(hsotg, false); return; } - if (!size_left && hs_req->req.actual < hs_req->req.length) { - dev_dbg(hsotg->dev, "%s trying more for req...\n", __func__); - s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true); - } else - s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0); + s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0); } /** @@ -1794,7 +1922,7 @@ static void s3c_hsotg_complete_in(struct dwc2_hsotg *hsotg, static void s3c_hsotg_epint(struct dwc2_hsotg *hsotg, unsigned int idx, int dir_in) { - struct s3c_hsotg_ep *hs_ep = &hsotg->eps[idx]; + struct s3c_hsotg_ep *hs_ep = index_to_ep(hsotg, idx, dir_in); u32 epint_reg = dir_in ? DIEPINT(idx) : DOEPINT(idx); u32 epctl_reg = dir_in ? DIEPCTL(idx) : DOEPCTL(idx); u32 epsiz_reg = dir_in ? DIEPTSIZ(idx) : DOEPTSIZ(idx); @@ -1807,9 +1935,19 @@ static void s3c_hsotg_epint(struct dwc2_hsotg *hsotg, unsigned int idx, /* Clear endpoint interrupts */ writel(ints, hsotg->regs + epint_reg); + if (!hs_ep) { + dev_err(hsotg->dev, "%s:Interrupt for unconfigured ep%d(%s)\n", + __func__, idx, dir_in ? "in" : "out"); + return; + } + dev_dbg(hsotg->dev, "%s: ep%d(%s) DxEPINT=0x%08x\n", __func__, idx, dir_in ? "in" : "out", ints); + /* Don't process XferCompl interrupt if it is a setup packet */ + if (idx == 0 && (ints & (DXEPINT_SETUP | DXEPINT_SETUP_RCVD))) + ints &= ~DXEPINT_XFERCOMPL; + if (ints & DXEPINT_XFERCOMPL) { if (hs_ep->isochronous && hs_ep->interval == 1) { if (ctrl & DXEPCTL_EOFRNUM) @@ -1839,7 +1977,7 @@ static void s3c_hsotg_epint(struct dwc2_hsotg *hsotg, unsigned int idx, * as we ignore the RXFIFO. */ - s3c_hsotg_handle_outdone(hsotg, idx, false); + s3c_hsotg_handle_outdone(hsotg, idx); } } @@ -1878,7 +2016,7 @@ static void s3c_hsotg_epint(struct dwc2_hsotg *hsotg, unsigned int idx, if (dir_in) WARN_ON_ONCE(1); else - s3c_hsotg_handle_outdone(hsotg, 0, true); + s3c_hsotg_handle_outdone(hsotg, 0); } } @@ -1969,9 +2107,15 @@ static void s3c_hsotg_irq_enumdone(struct dwc2_hsotg *hsotg) if (ep0_mps) { int i; - s3c_hsotg_set_ep_maxpacket(hsotg, 0, ep0_mps); - for (i = 1; i < hsotg->num_of_eps; i++) - s3c_hsotg_set_ep_maxpacket(hsotg, i, ep_mps); + /* Initialize ep0 for both in and out directions */ + s3c_hsotg_set_ep_maxpacket(hsotg, 0, ep0_mps, 1); + s3c_hsotg_set_ep_maxpacket(hsotg, 0, ep0_mps, 0); + for (i = 1; i < hsotg->num_of_eps; i++) { + if (hsotg->eps_in[i]) + s3c_hsotg_set_ep_maxpacket(hsotg, i, ep_mps, 1); + if (hsotg->eps_out[i]) + s3c_hsotg_set_ep_maxpacket(hsotg, i, ep_mps, 0); + } } /* ensure after enumeration our EP0 is active */ @@ -1988,30 +2132,23 @@ static void s3c_hsotg_irq_enumdone(struct dwc2_hsotg *hsotg) * @hsotg: The device state. * @ep: The endpoint the requests may be on. * @result: The result code to use. - * @force: Force removal of any current requests * * Go through the requests on the given endpoint and mark them * completed with the given result code. */ static void kill_all_requests(struct dwc2_hsotg *hsotg, struct s3c_hsotg_ep *ep, - int result, bool force) + int result) { struct s3c_hsotg_req *req, *treq; unsigned size; - list_for_each_entry_safe(req, treq, &ep->queue, queue) { - /* - * currently, we can't do much about an already - * running request on an in endpoint - */ - - if (ep->req == req && ep->dir_in && !force) - continue; + ep->req = NULL; + list_for_each_entry_safe(req, treq, &ep->queue, queue) s3c_hsotg_complete_request(hsotg, ep, req, result); - } + if (!hsotg->dedicated_fifos) return; size = (readl(hsotg->regs + DTXFSTS(ep->index)) & 0xffff) * 4; @@ -2035,8 +2172,16 @@ void s3c_hsotg_disconnect(struct dwc2_hsotg *hsotg) return; hsotg->connected = 0; - for (ep = 0; ep < hsotg->num_of_eps; ep++) - kill_all_requests(hsotg, &hsotg->eps[ep], -ESHUTDOWN, true); + hsotg->test_mode = 0; + + for (ep = 0; ep < hsotg->num_of_eps; ep++) { + if (hsotg->eps_in[ep]) + kill_all_requests(hsotg, hsotg->eps_in[ep], + -ESHUTDOWN); + if (hsotg->eps_out[ep]) + kill_all_requests(hsotg, hsotg->eps_out[ep], + -ESHUTDOWN); + } call_gadget(hsotg, disconnect); } @@ -2053,9 +2198,11 @@ static void s3c_hsotg_irq_fifoempty(struct dwc2_hsotg *hsotg, bool periodic) int epno, ret; /* look through for any more data to transmit */ - for (epno = 0; epno < hsotg->num_of_eps; epno++) { - ep = &hsotg->eps[epno]; + ep = index_to_ep(hsotg, epno, 1); + + if (!ep) + continue; if (!ep->dir_in) continue; @@ -2129,9 +2276,13 @@ static int s3c_hsotg_corereset(struct dwc2_hsotg *hsotg) * * Issue a soft reset to the core, and await the core finishing it. */ -void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg) +void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg, + bool is_usb_reset) { - s3c_hsotg_corereset(hsotg); + u32 val; + + if (!is_usb_reset) + s3c_hsotg_corereset(hsotg); /* * we must now enable ep0 ready for host detection and then @@ -2139,14 +2290,16 @@ void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg) */ /* set the PLL on, remove the HNP/SRP and set the PHY */ + val = (hsotg->phyif == GUSBCFG_PHYIF8) ? 9 : 5; writel(hsotg->phyif | GUSBCFG_TOUTCAL(7) | - (0x5 << 10), hsotg->regs + GUSBCFG); + (val << GUSBCFG_USBTRDTIM_SHIFT), hsotg->regs + GUSBCFG); s3c_hsotg_init_fifo(hsotg); - __orr32(hsotg->regs + DCTL, DCTL_SFTDISCON); + if (!is_usb_reset) + __orr32(hsotg->regs + DCTL, DCTL_SFTDISCON); - writel(1 << 18 | DCFG_DEVSPD_HS, hsotg->regs + DCFG); + writel(DCFG_EPMISCNT(1) | DCFG_DEVSPD_HS, hsotg->regs + DCFG); /* Clear any pending OTG interrupts */ writel(0xffffffff, hsotg->regs + GOTGINT); @@ -2163,7 +2316,7 @@ void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg) if (using_dma(hsotg)) writel(GAHBCFG_GLBL_INTR_EN | GAHBCFG_DMA_EN | - GAHBCFG_HBSTLEN_INCR4, + (GAHBCFG_HBSTLEN_INCR4 << GAHBCFG_HBSTLEN_SHIFT), hsotg->regs + GAHBCFG); else writel(((hsotg->dedicated_fifos) ? (GAHBCFG_NP_TXF_EMP_LVL | @@ -2177,8 +2330,8 @@ void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg) * interrupts. */ - writel(((hsotg->dedicated_fifos) ? DIEPMSK_TXFIFOEMPTY | - DIEPMSK_INTKNTXFEMPMSK : 0) | + writel(((hsotg->dedicated_fifos && !using_dma(hsotg)) ? + DIEPMSK_TXFIFOEMPTY | DIEPMSK_INTKNTXFEMPMSK : 0) | DIEPMSK_EPDISBLDMSK | DIEPMSK_XFERCOMPLMSK | DIEPMSK_TIMEOUTMSK | DIEPMSK_AHBERRMSK | DIEPMSK_INTKNEPMISMSK, @@ -2215,9 +2368,11 @@ void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg) s3c_hsotg_ctrl_epint(hsotg, 0, 0, 1); s3c_hsotg_ctrl_epint(hsotg, 0, 1, 1); - __orr32(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); - udelay(10); /* see openiboot */ - __bic32(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); + if (!is_usb_reset) { + __orr32(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); + udelay(10); /* see openiboot */ + __bic32(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); + } dev_dbg(hsotg->dev, "DCTL=0x%08x\n", readl(hsotg->regs + DCTL)); @@ -2230,13 +2385,13 @@ void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg) writel(DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) | DXEPTSIZ_XFERSIZE(8), hsotg->regs + DOEPTSIZ0); - writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) | + writel(s3c_hsotg_ep0_mps(hsotg->eps_out[0]->ep.maxpacket) | DXEPCTL_CNAK | DXEPCTL_EPENA | DXEPCTL_USBACTEP, hsotg->regs + DOEPCTL0); /* enable, but don't activate EP0in */ - writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) | + writel(s3c_hsotg_ep0_mps(hsotg->eps_out[0]->ep.maxpacket) | DXEPCTL_USBACTEP, hsotg->regs + DIEPCTL0); s3c_hsotg_enqueue_setup(hsotg); @@ -2246,8 +2401,10 @@ void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg) readl(hsotg->regs + DOEPCTL0)); /* clear global NAKs */ - writel(DCTL_CGOUTNAK | DCTL_CGNPINNAK | DCTL_SFTDISCON, - hsotg->regs + DCTL); + val = DCTL_CGOUTNAK | DCTL_CGNPINNAK; + if (!is_usb_reset) + val |= DCTL_SFTDISCON; + __orr32(hsotg->regs + DCTL, val); /* must be at-least 3ms to allow bus to see disconnect */ mdelay(3); @@ -2293,7 +2450,6 @@ irq_retry: writel(GINTSTS_ENUMDONE, hsotg->regs + GINTSTS); s3c_hsotg_irq_enumdone(hsotg); - hsotg->connected = 1; } if (gintsts & (GINTSTS_OEPINT | GINTSTS_IEPINT)) { @@ -2308,12 +2464,14 @@ irq_retry: dev_dbg(hsotg->dev, "%s: daint=%08x\n", __func__, daint); - for (ep = 0; ep < 15 && daint_out; ep++, daint_out >>= 1) { + for (ep = 0; ep < hsotg->num_of_eps && daint_out; + ep++, daint_out >>= 1) { if (daint_out & 1) s3c_hsotg_epint(hsotg, ep, 0); } - for (ep = 0; ep < 15 && daint_in; ep++, daint_in >>= 1) { + for (ep = 0; ep < hsotg->num_of_eps && daint_in; + ep++, daint_in >>= 1) { if (daint_in & 1) s3c_hsotg_epint(hsotg, ep, 1); } @@ -2329,15 +2487,17 @@ irq_retry: writel(GINTSTS_USBRST, hsotg->regs + GINTSTS); + /* Report disconnection if it is not already done. */ + s3c_hsotg_disconnect(hsotg); + if (usb_status & GOTGCTL_BSESVLD) { if (time_after(jiffies, hsotg->last_rst + msecs_to_jiffies(200))) { - kill_all_requests(hsotg, &hsotg->eps[0], - -ECONNRESET, true); + kill_all_requests(hsotg, hsotg->eps_out[0], + -ECONNRESET); - s3c_hsotg_core_init_disconnected(hsotg); - s3c_hsotg_core_connect(hsotg); + s3c_hsotg_core_init_disconnected(hsotg, true); } } } @@ -2429,12 +2589,12 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep, struct s3c_hsotg_ep *hs_ep = our_ep(ep); struct dwc2_hsotg *hsotg = hs_ep->parent; unsigned long flags; - int index = hs_ep->index; + unsigned int index = hs_ep->index; u32 epctrl_reg; u32 epctrl; u32 mps; - int dir_in; - int i, val, size; + unsigned int dir_in; + unsigned int i, val, size; int ret = 0; dev_dbg(hsotg->dev, @@ -2482,7 +2642,7 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep, epctrl |= DXEPCTL_SNAK; /* update the endpoint state */ - s3c_hsotg_set_ep_maxpacket(hsotg, hs_ep->index, mps); + s3c_hsotg_set_ep_maxpacket(hsotg, hs_ep->index, mps, dir_in); /* default, set to non-periodic */ hs_ep->isochronous = 0; @@ -2518,30 +2678,48 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep, break; } + /* If fifo is already allocated for this ep */ + if (hs_ep->fifo_index) { + size = hs_ep->ep.maxpacket * hs_ep->mc; + /* If bigger fifo is required deallocate current one */ + if (size > hs_ep->fifo_size) { + hsotg->fifo_map &= ~(1 << hs_ep->fifo_index); + hs_ep->fifo_index = 0; + hs_ep->fifo_size = 0; + } + } + /* * if the hardware has dedicated fifos, we must give each IN EP * a unique tx-fifo even if it is non-periodic. */ - if (dir_in && hsotg->dedicated_fifos) { + if (dir_in && hsotg->dedicated_fifos && !hs_ep->fifo_index) { + u32 fifo_index = 0; + u32 fifo_size = UINT_MAX; size = hs_ep->ep.maxpacket*hs_ep->mc; - for (i = 1; i <= 8; ++i) { + for (i = 1; i < hsotg->num_of_eps; ++i) { if (hsotg->fifo_map & (1<<i)) continue; val = readl(hsotg->regs + DPTXFSIZN(i)); val = (val >> FIFOSIZE_DEPTH_SHIFT)*4; if (val < size) continue; - hsotg->fifo_map |= 1<<i; - - epctrl |= DXEPCTL_TXFNUM(i); - hs_ep->fifo_index = i; - hs_ep->fifo_size = val; - break; + /* Search for smallest acceptable fifo */ + if (val < fifo_size) { + fifo_size = val; + fifo_index = i; + } } - if (i == 8) { + if (!fifo_index) { + dev_err(hsotg->dev, + "%s: No suitable fifo found\n", __func__); ret = -ENOMEM; goto error; } + hsotg->fifo_map |= 1 << fifo_index; + epctrl |= DXEPCTL_TXFNUM(fifo_index); + hs_ep->fifo_index = fifo_index; + hs_ep->fifo_size = fifo_size; } /* for non control endpoints, set PID to D0 */ @@ -2579,7 +2757,7 @@ static int s3c_hsotg_ep_disable_force(struct usb_ep *ep, bool force) dev_dbg(hsotg->dev, "%s(ep %p)\n", __func__, ep); - if (ep == &hsotg->eps[0].ep) { + if (ep == &hsotg->eps_out[0]->ep) { dev_err(hsotg->dev, "%s: called for ep0\n", __func__); return -EINVAL; } @@ -2587,8 +2765,6 @@ static int s3c_hsotg_ep_disable_force(struct usb_ep *ep, bool force) epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); spin_lock_irqsave(&hsotg->lock, flags); - /* terminate all requests with shutdown */ - kill_all_requests(hsotg, hs_ep, -ESHUTDOWN, force); hsotg->fifo_map &= ~(1<<hs_ep->fifo_index); hs_ep->fifo_index = 0; @@ -2605,6 +2781,9 @@ static int s3c_hsotg_ep_disable_force(struct usb_ep *ep, bool force) /* disable endpoint interrupts */ s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, hs_ep->dir_in, 0); + /* terminate all requests with shutdown */ + kill_all_requests(hsotg, hs_ep, -ESHUTDOWN); + spin_unlock_irqrestore(&hsotg->lock, flags); return 0; } @@ -2682,40 +2861,39 @@ static int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value) return 0; } - /* write both IN and OUT control registers */ - - epreg = DIEPCTL(index); - epctl = readl(hs->regs + epreg); - - if (value) { - epctl |= DXEPCTL_STALL + DXEPCTL_SNAK; - if (epctl & DXEPCTL_EPENA) - epctl |= DXEPCTL_EPDIS; + if (hs_ep->dir_in) { + epreg = DIEPCTL(index); + epctl = readl(hs->regs + epreg); + + if (value) { + epctl |= DXEPCTL_STALL + DXEPCTL_SNAK; + if (epctl & DXEPCTL_EPENA) + epctl |= DXEPCTL_EPDIS; + } else { + epctl &= ~DXEPCTL_STALL; + xfertype = epctl & DXEPCTL_EPTYPE_MASK; + if (xfertype == DXEPCTL_EPTYPE_BULK || + xfertype == DXEPCTL_EPTYPE_INTERRUPT) + epctl |= DXEPCTL_SETD0PID; + } + writel(epctl, hs->regs + epreg); } else { - epctl &= ~DXEPCTL_STALL; - xfertype = epctl & DXEPCTL_EPTYPE_MASK; - if (xfertype == DXEPCTL_EPTYPE_BULK || - xfertype == DXEPCTL_EPTYPE_INTERRUPT) - epctl |= DXEPCTL_SETD0PID; - } - - writel(epctl, hs->regs + epreg); - epreg = DOEPCTL(index); - epctl = readl(hs->regs + epreg); + epreg = DOEPCTL(index); + epctl = readl(hs->regs + epreg); - if (value) - epctl |= DXEPCTL_STALL; - else { - epctl &= ~DXEPCTL_STALL; - xfertype = epctl & DXEPCTL_EPTYPE_MASK; - if (xfertype == DXEPCTL_EPTYPE_BULK || - xfertype == DXEPCTL_EPTYPE_INTERRUPT) - epctl |= DXEPCTL_SETD0PID; + if (value) + epctl |= DXEPCTL_STALL; + else { + epctl &= ~DXEPCTL_STALL; + xfertype = epctl & DXEPCTL_EPTYPE_MASK; + if (xfertype == DXEPCTL_EPTYPE_BULK || + xfertype == DXEPCTL_EPTYPE_INTERRUPT) + epctl |= DXEPCTL_SETD0PID; + } + writel(epctl, hs->regs + epreg); } - writel(epctl, hs->regs + epreg); - hs_ep->halted = value; return 0; @@ -2801,6 +2979,7 @@ static void s3c_hsotg_phy_disable(struct dwc2_hsotg *hsotg) */ static void s3c_hsotg_init(struct dwc2_hsotg *hsotg) { + u32 trdtim; /* unmask subset of endpoint interrupts */ writel(DIEPMSK_TIMEOUTMSK | DIEPMSK_AHBERRMSK | @@ -2816,12 +2995,6 @@ static void s3c_hsotg_init(struct dwc2_hsotg *hsotg) /* Be in disconnected state until gadget is registered */ __orr32(hsotg->regs + DCTL, DCTL_SFTDISCON); - if (0) { - /* post global nak until we're ready */ - writel(DCTL_SGNPINNAK | DCTL_SGOUTNAK, - hsotg->regs + DCTL); - } - /* setup fifos */ dev_dbg(hsotg->dev, "GRXFSIZ=0x%08x, GNPTXFSIZ=0x%08x\n", @@ -2831,11 +3004,13 @@ static void s3c_hsotg_init(struct dwc2_hsotg *hsotg) s3c_hsotg_init_fifo(hsotg); /* set the PLL on, remove the HNP/SRP and set the PHY */ - writel(GUSBCFG_PHYIF16 | GUSBCFG_TOUTCAL(7) | (0x5 << 10), - hsotg->regs + GUSBCFG); + trdtim = (hsotg->phyif == GUSBCFG_PHYIF8) ? 9 : 5; + writel(hsotg->phyif | GUSBCFG_TOUTCAL(7) | + (trdtim << GUSBCFG_USBTRDTIM_SHIFT), + hsotg->regs + GUSBCFG); - writel(using_dma(hsotg) ? GAHBCFG_DMA_EN : 0x0, - hsotg->regs + GAHBCFG); + if (using_dma(hsotg)) + __orr32(hsotg->regs + GAHBCFG, GAHBCFG_DMA_EN); } /** @@ -2889,10 +3064,12 @@ static int s3c_hsotg_udc_start(struct usb_gadget *gadget, } s3c_hsotg_phy_enable(hsotg); + if (!IS_ERR_OR_NULL(hsotg->uphy)) + otg_set_peripheral(hsotg->uphy->otg, &hsotg->gadget); spin_lock_irqsave(&hsotg->lock, flags); s3c_hsotg_init(hsotg); - s3c_hsotg_core_init_disconnected(hsotg); + s3c_hsotg_core_init_disconnected(hsotg, false); hsotg->enabled = 0; spin_unlock_irqrestore(&hsotg->lock, flags); @@ -2927,8 +3104,12 @@ static int s3c_hsotg_udc_stop(struct usb_gadget *gadget) mutex_lock(&hsotg->init_mutex); /* all endpoints should be shutdown */ - for (ep = 1; ep < hsotg->num_of_eps; ep++) - s3c_hsotg_ep_disable_force(&hsotg->eps[ep].ep, true); + for (ep = 1; ep < hsotg->num_of_eps; ep++) { + if (hsotg->eps_in[ep]) + s3c_hsotg_ep_disable(&hsotg->eps_in[ep]->ep); + if (hsotg->eps_out[ep]) + s3c_hsotg_ep_disable(&hsotg->eps_out[ep]->ep); + } spin_lock_irqsave(&hsotg->lock, flags); @@ -2938,6 +3119,8 @@ static int s3c_hsotg_udc_stop(struct usb_gadget *gadget) spin_unlock_irqrestore(&hsotg->lock, flags); + if (!IS_ERR_OR_NULL(hsotg->uphy)) + otg_set_peripheral(hsotg->uphy->otg, NULL); s3c_hsotg_phy_disable(hsotg); regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies); @@ -2979,9 +3162,11 @@ static int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on) if (is_on) { clk_enable(hsotg->clk); hsotg->enabled = 1; + s3c_hsotg_core_init_disconnected(hsotg, false); s3c_hsotg_core_connect(hsotg); } else { s3c_hsotg_core_disconnect(hsotg); + s3c_hsotg_disconnect(hsotg); hsotg->enabled = 0; clk_disable(hsotg->clk); } @@ -2993,11 +3178,52 @@ static int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on) return 0; } +static int s3c_hsotg_vbus_session(struct usb_gadget *gadget, int is_active) +{ + struct dwc2_hsotg *hsotg = to_hsotg(gadget); + unsigned long flags; + + dev_dbg(hsotg->dev, "%s: is_active: %d\n", __func__, is_active); + spin_lock_irqsave(&hsotg->lock, flags); + + if (is_active) { + /* Kill any ep0 requests as controller will be reinitialized */ + kill_all_requests(hsotg, hsotg->eps_out[0], -ECONNRESET); + s3c_hsotg_core_init_disconnected(hsotg, false); + if (hsotg->enabled) + s3c_hsotg_core_connect(hsotg); + } else { + s3c_hsotg_core_disconnect(hsotg); + s3c_hsotg_disconnect(hsotg); + } + + spin_unlock_irqrestore(&hsotg->lock, flags); + return 0; +} + +/** + * s3c_hsotg_vbus_draw - report bMaxPower field + * @gadget: The usb gadget state + * @mA: Amount of current + * + * Report how much power the device may consume to the phy. + */ +static int s3c_hsotg_vbus_draw(struct usb_gadget *gadget, unsigned mA) +{ + struct dwc2_hsotg *hsotg = to_hsotg(gadget); + + if (IS_ERR_OR_NULL(hsotg->uphy)) + return -ENOTSUPP; + return usb_phy_set_power(hsotg->uphy, mA); +} + static const struct usb_gadget_ops s3c_hsotg_gadget_ops = { .get_frame = s3c_hsotg_gadget_getframe, .udc_start = s3c_hsotg_udc_start, .udc_stop = s3c_hsotg_udc_stop, .pullup = s3c_hsotg_pullup, + .vbus_session = s3c_hsotg_vbus_session, + .vbus_draw = s3c_hsotg_vbus_draw, }; /** @@ -3012,19 +3238,19 @@ static const struct usb_gadget_ops s3c_hsotg_gadget_ops = { */ static void s3c_hsotg_initep(struct dwc2_hsotg *hsotg, struct s3c_hsotg_ep *hs_ep, - int epnum) + int epnum, + bool dir_in) { char *dir; if (epnum == 0) dir = ""; - else if ((epnum % 2) == 0) { - dir = "out"; - } else { + else if (dir_in) dir = "in"; - hs_ep->dir_in = 1; - } + else + dir = "out"; + hs_ep->dir_in = dir_in; hs_ep->index = epnum; snprintf(hs_ep->name, sizeof(hs_ep->name), "ep%d%s", epnum, dir); @@ -3048,8 +3274,10 @@ static void s3c_hsotg_initep(struct dwc2_hsotg *hsotg, if (using_dma(hsotg)) { u32 next = DXEPCTL_NEXTEP((epnum + 1) % 15); - writel(next, hsotg->regs + DIEPCTL(epnum)); - writel(next, hsotg->regs + DOEPCTL(epnum)); + if (dir_in) + writel(next, hsotg->regs + DIEPCTL(epnum)); + else + writel(next, hsotg->regs + DOEPCTL(epnum)); } } @@ -3059,24 +3287,56 @@ static void s3c_hsotg_initep(struct dwc2_hsotg *hsotg, * * Read the USB core HW configuration registers */ -static void s3c_hsotg_hw_cfg(struct dwc2_hsotg *hsotg) +static int s3c_hsotg_hw_cfg(struct dwc2_hsotg *hsotg) { - u32 cfg2, cfg3, cfg4; + u32 cfg; + u32 ep_type; + u32 i; + /* check hardware configuration */ - cfg2 = readl(hsotg->regs + 0x48); - hsotg->num_of_eps = (cfg2 >> 10) & 0xF; + cfg = readl(hsotg->regs + GHWCFG2); + hsotg->num_of_eps = (cfg >> GHWCFG2_NUM_DEV_EP_SHIFT) & 0xF; + /* Add ep0 */ + hsotg->num_of_eps++; + + hsotg->eps_in[0] = devm_kzalloc(hsotg->dev, sizeof(struct s3c_hsotg_ep), + GFP_KERNEL); + if (!hsotg->eps_in[0]) + return -ENOMEM; + /* Same s3c_hsotg_ep is used in both directions for ep0 */ + hsotg->eps_out[0] = hsotg->eps_in[0]; + + cfg = readl(hsotg->regs + GHWCFG1); + for (i = 1, cfg >>= 2; i < hsotg->num_of_eps; i++, cfg >>= 2) { + ep_type = cfg & 3; + /* Direction in or both */ + if (!(ep_type & 2)) { + hsotg->eps_in[i] = devm_kzalloc(hsotg->dev, + sizeof(struct s3c_hsotg_ep), GFP_KERNEL); + if (!hsotg->eps_in[i]) + return -ENOMEM; + } + /* Direction out or both */ + if (!(ep_type & 1)) { + hsotg->eps_out[i] = devm_kzalloc(hsotg->dev, + sizeof(struct s3c_hsotg_ep), GFP_KERNEL); + if (!hsotg->eps_out[i]) + return -ENOMEM; + } + } - cfg3 = readl(hsotg->regs + 0x4C); - hsotg->fifo_mem = (cfg3 >> 16); + cfg = readl(hsotg->regs + GHWCFG3); + hsotg->fifo_mem = (cfg >> GHWCFG3_DFIFO_DEPTH_SHIFT); - cfg4 = readl(hsotg->regs + 0x50); - hsotg->dedicated_fifos = (cfg4 >> 25) & 1; + cfg = readl(hsotg->regs + GHWCFG4); + hsotg->dedicated_fifos = (cfg >> GHWCFG4_DED_FIFO_SHIFT) & 1; dev_info(hsotg->dev, "EPs: %d, %s fifos, %d entries in SPRAM\n", hsotg->num_of_eps, hsotg->dedicated_fifos ? "dedicated" : "shared", hsotg->fifo_mem); + return 0; } /** @@ -3095,22 +3355,22 @@ static void s3c_hsotg_dump(struct dwc2_hsotg *hsotg) readl(regs + DCFG), readl(regs + DCTL), readl(regs + DIEPMSK)); - dev_info(dev, "GAHBCFG=0x%08x, 0x44=0x%08x\n", - readl(regs + GAHBCFG), readl(regs + 0x44)); + dev_info(dev, "GAHBCFG=0x%08x, GHWCFG1=0x%08x\n", + readl(regs + GAHBCFG), readl(regs + GHWCFG1)); dev_info(dev, "GRXFSIZ=0x%08x, GNPTXFSIZ=0x%08x\n", readl(regs + GRXFSIZ), readl(regs + GNPTXFSIZ)); /* show periodic fifo settings */ - for (idx = 1; idx <= 15; idx++) { + for (idx = 1; idx < hsotg->num_of_eps; idx++) { val = readl(regs + DPTXFSIZN(idx)); dev_info(dev, "DPTx[%d] FSize=%d, StAddr=0x%08x\n", idx, val >> FIFOSIZE_DEPTH_SHIFT, val & FIFOSIZE_STARTADDR_MASK); } - for (idx = 0; idx < 15; idx++) { + for (idx = 0; idx < hsotg->num_of_eps; idx++) { dev_info(dev, "ep%d-in: EPCTL=0x%08x, SIZ=0x%08x, DMA=0x%08x\n", idx, readl(regs + DIEPCTL(idx)), @@ -3132,6 +3392,103 @@ static void s3c_hsotg_dump(struct dwc2_hsotg *hsotg) } /** + * testmode_write - debugfs: change usb test mode + * @seq: The seq file to write to. + * @v: Unused parameter. + * + * This debugfs entry modify the current usb test mode. + */ +static ssize_t testmode_write(struct file *file, const char __user *ubuf, size_t + count, loff_t *ppos) +{ + struct seq_file *s = file->private_data; + struct dwc2_hsotg *hsotg = s->private; + unsigned long flags; + u32 testmode = 0; + char buf[32]; + + if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) + return -EFAULT; + + if (!strncmp(buf, "test_j", 6)) + testmode = TEST_J; + else if (!strncmp(buf, "test_k", 6)) + testmode = TEST_K; + else if (!strncmp(buf, "test_se0_nak", 12)) + testmode = TEST_SE0_NAK; + else if (!strncmp(buf, "test_packet", 11)) + testmode = TEST_PACKET; + else if (!strncmp(buf, "test_force_enable", 17)) + testmode = TEST_FORCE_EN; + else + testmode = 0; + + spin_lock_irqsave(&hsotg->lock, flags); + s3c_hsotg_set_test_mode(hsotg, testmode); + spin_unlock_irqrestore(&hsotg->lock, flags); + return count; +} + +/** + * testmode_show - debugfs: show usb test mode state + * @seq: The seq file to write to. + * @v: Unused parameter. + * + * This debugfs entry shows which usb test mode is currently enabled. + */ +static int testmode_show(struct seq_file *s, void *unused) +{ + struct dwc2_hsotg *hsotg = s->private; + unsigned long flags; + int dctl; + + spin_lock_irqsave(&hsotg->lock, flags); + dctl = readl(hsotg->regs + DCTL); + dctl &= DCTL_TSTCTL_MASK; + dctl >>= DCTL_TSTCTL_SHIFT; + spin_unlock_irqrestore(&hsotg->lock, flags); + + switch (dctl) { + case 0: + seq_puts(s, "no test\n"); + break; + case TEST_J: + seq_puts(s, "test_j\n"); + break; + case TEST_K: + seq_puts(s, "test_k\n"); + break; + case TEST_SE0_NAK: + seq_puts(s, "test_se0_nak\n"); + break; + case TEST_PACKET: + seq_puts(s, "test_packet\n"); + break; + case TEST_FORCE_EN: + seq_puts(s, "test_force_enable\n"); + break; + default: + seq_printf(s, "UNKNOWN %d\n", dctl); + } + + return 0; +} + +static int testmode_open(struct inode *inode, struct file *file) +{ + return single_open(file, testmode_show, inode->i_private); +} + +static const struct file_operations testmode_fops = { + .owner = THIS_MODULE, + .open = testmode_open, + .write = testmode_write, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/** * state_show - debugfs: show overall driver and device state. * @seq: The seq file to write to. * @v: Unused parameter. @@ -3168,7 +3525,7 @@ static int state_show(struct seq_file *seq, void *v) seq_puts(seq, "\nEndpoint status:\n"); - for (idx = 0; idx < 15; idx++) { + for (idx = 0; idx < hsotg->num_of_eps; idx++) { u32 in, out; in = readl(regs + DIEPCTL(idx)); @@ -3227,7 +3584,7 @@ static int fifo_show(struct seq_file *seq, void *v) seq_puts(seq, "\nPeriodic TXFIFOs:\n"); - for (idx = 1; idx <= 15; idx++) { + for (idx = 1; idx < hsotg->num_of_eps; idx++) { val = readl(regs + DPTXFSIZN(idx)); seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx, @@ -3359,29 +3716,53 @@ static void s3c_hsotg_create_debug(struct dwc2_hsotg *hsotg) /* create general state file */ - hsotg->debug_file = debugfs_create_file("state", 0444, root, + hsotg->debug_file = debugfs_create_file("state", S_IRUGO, root, hsotg, &state_fops); if (IS_ERR(hsotg->debug_file)) dev_err(hsotg->dev, "%s: failed to create state\n", __func__); - hsotg->debug_fifo = debugfs_create_file("fifo", 0444, root, + hsotg->debug_testmode = debugfs_create_file("testmode", + S_IRUGO | S_IWUSR, root, + hsotg, &testmode_fops); + + if (IS_ERR(hsotg->debug_testmode)) + dev_err(hsotg->dev, "%s: failed to create testmode\n", + __func__); + + hsotg->debug_fifo = debugfs_create_file("fifo", S_IRUGO, root, hsotg, &fifo_fops); if (IS_ERR(hsotg->debug_fifo)) dev_err(hsotg->dev, "%s: failed to create fifo\n", __func__); - /* create one file for each endpoint */ - + /* Create one file for each out endpoint */ for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) { - struct s3c_hsotg_ep *ep = &hsotg->eps[epidx]; + struct s3c_hsotg_ep *ep; - ep->debugfs = debugfs_create_file(ep->name, 0444, - root, ep, &ep_fops); + ep = hsotg->eps_out[epidx]; + if (ep) { + ep->debugfs = debugfs_create_file(ep->name, S_IRUGO, + root, ep, &ep_fops); - if (IS_ERR(ep->debugfs)) - dev_err(hsotg->dev, "failed to create %s debug file\n", - ep->name); + if (IS_ERR(ep->debugfs)) + dev_err(hsotg->dev, "failed to create %s debug file\n", + ep->name); + } + } + /* Create one file for each in endpoint. EP0 is handled with out eps */ + for (epidx = 1; epidx < hsotg->num_of_eps; epidx++) { + struct s3c_hsotg_ep *ep; + + ep = hsotg->eps_in[epidx]; + if (ep) { + ep->debugfs = debugfs_create_file(ep->name, S_IRUGO, + root, ep, &ep_fops); + + if (IS_ERR(ep->debugfs)) + dev_err(hsotg->dev, "failed to create %s debug file\n", + ep->name); + } } } @@ -3396,15 +3777,63 @@ static void s3c_hsotg_delete_debug(struct dwc2_hsotg *hsotg) unsigned epidx; for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) { - struct s3c_hsotg_ep *ep = &hsotg->eps[epidx]; - debugfs_remove(ep->debugfs); + if (hsotg->eps_in[epidx]) + debugfs_remove(hsotg->eps_in[epidx]->debugfs); + if (hsotg->eps_out[epidx]) + debugfs_remove(hsotg->eps_out[epidx]->debugfs); } debugfs_remove(hsotg->debug_file); + debugfs_remove(hsotg->debug_testmode); debugfs_remove(hsotg->debug_fifo); debugfs_remove(hsotg->debug_root); } +#ifdef CONFIG_OF +static void s3c_hsotg_of_probe(struct dwc2_hsotg *hsotg) +{ + struct device_node *np = hsotg->dev->of_node; + u32 len = 0; + u32 i = 0; + + /* Enable dma if requested in device tree */ + hsotg->g_using_dma = of_property_read_bool(np, "g-use-dma"); + + /* + * Register TX periodic fifo size per endpoint. + * EP0 is excluded since it has no fifo configuration. + */ + if (!of_find_property(np, "g-tx-fifo-size", &len)) + goto rx_fifo; + + len /= sizeof(u32); + + /* Read tx fifo sizes other than ep0 */ + if (of_property_read_u32_array(np, "g-tx-fifo-size", + &hsotg->g_tx_fifo_sz[1], len)) + goto rx_fifo; + + /* Add ep0 */ + len++; + + /* Make remaining TX fifos unavailable */ + if (len < MAX_EPS_CHANNELS) { + for (i = len; i < MAX_EPS_CHANNELS; i++) + hsotg->g_tx_fifo_sz[i] = 0; + } + +rx_fifo: + /* Register RX fifo size */ + of_property_read_u32(np, "g-rx-fifo-size", &hsotg->g_rx_fifo_sz); + + /* Register NPTX fifo size */ + of_property_read_u32(np, "g-np-tx-fifo-size", + &hsotg->g_np_g_tx_fifo_sz); +} +#else +static inline void s3c_hsotg_of_probe(struct dwc2_hsotg *hsotg) { } +#endif + /** * dwc2_gadget_init - init function for gadget * @dwc2: The data structure for the DWC2 driver. @@ -3414,41 +3843,47 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) { struct device *dev = hsotg->dev; struct s3c_hsotg_plat *plat = dev->platform_data; - struct phy *phy; - struct usb_phy *uphy; - struct s3c_hsotg_ep *eps; int epnum; int ret; int i; + u32 p_tx_fifo[] = DWC2_G_P_LEGACY_TX_FIFO_SIZE; /* Set default UTMI width */ hsotg->phyif = GUSBCFG_PHYIF16; + s3c_hsotg_of_probe(hsotg); + + /* Initialize to legacy fifo configuration values */ + hsotg->g_rx_fifo_sz = 2048; + hsotg->g_np_g_tx_fifo_sz = 1024; + memcpy(&hsotg->g_tx_fifo_sz[1], p_tx_fifo, sizeof(p_tx_fifo)); + /* Device tree specific probe */ + s3c_hsotg_of_probe(hsotg); + /* Dump fifo information */ + dev_dbg(dev, "NonPeriodic TXFIFO size: %d\n", + hsotg->g_np_g_tx_fifo_sz); + dev_dbg(dev, "RXFIFO size: %d\n", hsotg->g_rx_fifo_sz); + for (i = 0; i < MAX_EPS_CHANNELS; i++) + dev_dbg(dev, "Periodic TXFIFO%2d size: %d\n", i, + hsotg->g_tx_fifo_sz[i]); /* - * Attempt to find a generic PHY, then look for an old style - * USB PHY, finally fall back to pdata + * If platform probe couldn't find a generic PHY or an old style + * USB PHY, fall back to pdata */ - phy = devm_phy_get(dev, "usb2-phy"); - if (IS_ERR(phy)) { - uphy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); - if (IS_ERR(uphy)) { - /* Fallback for pdata */ - plat = dev_get_platdata(dev); - if (!plat) { - dev_err(dev, - "no platform data or transceiver defined\n"); - return -EPROBE_DEFER; - } - hsotg->plat = plat; - } else - hsotg->uphy = uphy; - } else { - hsotg->phy = phy; + if (IS_ERR_OR_NULL(hsotg->phy) && IS_ERR_OR_NULL(hsotg->uphy)) { + plat = dev_get_platdata(dev); + if (!plat) { + dev_err(dev, + "no platform data or transceiver defined\n"); + return -EPROBE_DEFER; + } + hsotg->plat = plat; + } else if (hsotg->phy) { /* * If using the generic PHY framework, check if the PHY bus * width is 8-bit and set the phyif appropriately. */ - if (phy_get_bus_width(phy) == 8) + if (phy_get_bus_width(hsotg->phy) == 8) hsotg->phyif = GUSBCFG_PHYIF8; } @@ -3488,16 +3923,53 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) if (ret) { dev_err(dev, "failed to enable supplies: %d\n", ret); - goto err_supplies; + goto err_clk; } /* usb phy enable */ s3c_hsotg_phy_enable(hsotg); + /* + * Force Device mode before initialization. + * This allows correctly configuring fifo for device mode. + */ + __bic32(hsotg->regs + GUSBCFG, GUSBCFG_FORCEHOSTMODE); + __orr32(hsotg->regs + GUSBCFG, GUSBCFG_FORCEDEVMODE); + + /* + * According to Synopsys databook, this sleep is needed for the force + * device mode to take effect. + */ + msleep(25); + s3c_hsotg_corereset(hsotg); - s3c_hsotg_hw_cfg(hsotg); + ret = s3c_hsotg_hw_cfg(hsotg); + if (ret) { + dev_err(hsotg->dev, "Hardware configuration failed: %d\n", ret); + goto err_clk; + } + s3c_hsotg_init(hsotg); + /* Switch back to default configuration */ + __bic32(hsotg->regs + GUSBCFG, GUSBCFG_FORCEDEVMODE); + + hsotg->ctrl_buff = devm_kzalloc(hsotg->dev, + DWC2_CTRL_BUFF_SIZE, GFP_KERNEL); + if (!hsotg->ctrl_buff) { + dev_err(dev, "failed to allocate ctrl request buff\n"); + ret = -ENOMEM; + goto err_supplies; + } + + hsotg->ep0_buff = devm_kzalloc(hsotg->dev, + DWC2_CTRL_BUFF_SIZE, GFP_KERNEL); + if (!hsotg->ep0_buff) { + dev_err(dev, "failed to allocate ctrl reply buff\n"); + ret = -ENOMEM; + goto err_supplies; + } + ret = devm_request_irq(hsotg->dev, irq, s3c_hsotg_irq, IRQF_SHARED, dev_name(hsotg->dev), hsotg); if (ret < 0) { @@ -3506,7 +3978,7 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies); dev_err(dev, "cannot claim IRQ for gadget\n"); - goto err_clk; + goto err_supplies; } /* hsotg->num_of_eps holds number of EPs other than ep0 */ @@ -3517,33 +3989,30 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) goto err_supplies; } - eps = kcalloc(hsotg->num_of_eps + 1, sizeof(struct s3c_hsotg_ep), - GFP_KERNEL); - if (!eps) { - ret = -ENOMEM; - goto err_supplies; - } - - hsotg->eps = eps; - /* setup endpoint information */ INIT_LIST_HEAD(&hsotg->gadget.ep_list); - hsotg->gadget.ep0 = &hsotg->eps[0].ep; + hsotg->gadget.ep0 = &hsotg->eps_out[0]->ep; /* allocate EP0 request */ - hsotg->ctrl_req = s3c_hsotg_ep_alloc_request(&hsotg->eps[0].ep, + hsotg->ctrl_req = s3c_hsotg_ep_alloc_request(&hsotg->eps_out[0]->ep, GFP_KERNEL); if (!hsotg->ctrl_req) { dev_err(dev, "failed to allocate ctrl req\n"); ret = -ENOMEM; - goto err_ep_mem; + goto err_supplies; } /* initialise the endpoints now the core has been initialised */ - for (epnum = 0; epnum < hsotg->num_of_eps; epnum++) - s3c_hsotg_initep(hsotg, &hsotg->eps[epnum], epnum); + for (epnum = 0; epnum < hsotg->num_of_eps; epnum++) { + if (hsotg->eps_in[epnum]) + s3c_hsotg_initep(hsotg, hsotg->eps_in[epnum], + epnum, 1); + if (hsotg->eps_out[epnum]) + s3c_hsotg_initep(hsotg, hsotg->eps_out[epnum], + epnum, 0); + } /* disable power and clock */ s3c_hsotg_phy_disable(hsotg); @@ -3552,12 +4021,12 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) hsotg->supplies); if (ret) { dev_err(dev, "failed to disable supplies: %d\n", ret); - goto err_ep_mem; + goto err_supplies; } ret = usb_add_gadget_udc(dev, &hsotg->gadget); if (ret) - goto err_ep_mem; + goto err_supplies; s3c_hsotg_create_debug(hsotg); @@ -3565,8 +4034,6 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) return 0; -err_ep_mem: - kfree(eps); err_supplies: s3c_hsotg_phy_disable(hsotg); err_clk: @@ -3612,8 +4079,12 @@ int s3c_hsotg_suspend(struct dwc2_hsotg *hsotg) s3c_hsotg_phy_disable(hsotg); - for (ep = 0; ep < hsotg->num_of_eps; ep++) - s3c_hsotg_ep_disable(&hsotg->eps[ep].ep); + for (ep = 0; ep < hsotg->num_of_eps; ep++) { + if (hsotg->eps_in[ep]) + s3c_hsotg_ep_disable(&hsotg->eps_in[ep]->ep); + if (hsotg->eps_out[ep]) + s3c_hsotg_ep_disable(&hsotg->eps_out[ep]->ep); + } ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies); @@ -3644,7 +4115,7 @@ int s3c_hsotg_resume(struct dwc2_hsotg *hsotg) s3c_hsotg_phy_enable(hsotg); spin_lock_irqsave(&hsotg->lock, flags); - s3c_hsotg_core_init_disconnected(hsotg); + s3c_hsotg_core_init_disconnected(hsotg, false); if (hsotg->enabled) s3c_hsotg_core_connect(hsotg); spin_unlock_irqrestore(&hsotg->lock, flags); diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index c5fd43d2513f..c78c8740db1d 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -316,10 +316,12 @@ void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg) */ static void dwc2_hcd_rem_wakeup(struct dwc2_hsotg *hsotg) { - if (hsotg->lx_state == DWC2_L2) + if (hsotg->lx_state == DWC2_L2) { hsotg->flags.b.port_suspend_change = 1; - else + usb_hcd_resume_root_hub(hsotg->priv); + } else { hsotg->flags.b.port_l1_change = 1; + } } /** @@ -1371,7 +1373,7 @@ static void dwc2_conn_id_status_change(struct work_struct *work) hsotg->op_state = OTG_STATE_B_PERIPHERAL; dwc2_core_init(hsotg, false, -1); dwc2_enable_global_interrupts(hsotg); - s3c_hsotg_core_init_disconnected(hsotg); + s3c_hsotg_core_init_disconnected(hsotg, false); s3c_hsotg_core_connect(hsotg); } else { /* A-Device connector (Host Mode) */ @@ -1473,30 +1475,6 @@ static void dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex) } } -static void dwc2_port_resume(struct dwc2_hsotg *hsotg) -{ - u32 hprt0; - - /* After clear the Stop PHY clock bit, we should wait for a moment - * for PLL work stable with clock output. - */ - writel(0, hsotg->regs + PCGCTL); - usleep_range(2000, 4000); - - hprt0 = dwc2_read_hprt0(hsotg); - hprt0 |= HPRT0_RES; - writel(hprt0, hsotg->regs + HPRT0); - hprt0 &= ~HPRT0_SUSP; - /* according to USB2.0 Spec 7.1.7.7, the host must send the resume - * signal for at least 20ms - */ - usleep_range(20000, 25000); - - hprt0 &= ~HPRT0_RES; - writel(hprt0, hsotg->regs + HPRT0); - hsotg->lx_state = DWC2_L0; -} - /* Handles hub class-specific requests */ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq, u16 wvalue, u16 windex, char *buf, u16 wlength) @@ -1542,7 +1520,17 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq, case USB_PORT_FEAT_SUSPEND: dev_dbg(hsotg->dev, "ClearPortFeature USB_PORT_FEAT_SUSPEND\n"); - dwc2_port_resume(hsotg); + writel(0, hsotg->regs + PCGCTL); + usleep_range(20000, 40000); + + hprt0 = dwc2_read_hprt0(hsotg); + hprt0 |= HPRT0_RES; + writel(hprt0, hsotg->regs + HPRT0); + hprt0 &= ~HPRT0_SUSP; + usleep_range(100000, 150000); + + hprt0 &= ~HPRT0_RES; + writel(hprt0, hsotg->regs + HPRT0); break; case USB_PORT_FEAT_POWER: @@ -2317,55 +2305,6 @@ static void _dwc2_hcd_stop(struct usb_hcd *hcd) usleep_range(1000, 3000); } -static int _dwc2_hcd_suspend(struct usb_hcd *hcd) -{ - struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); - u32 hprt0; - - if (!((hsotg->op_state == OTG_STATE_B_HOST) || - (hsotg->op_state == OTG_STATE_A_HOST))) - return 0; - - /* TODO: We get into suspend from 'on' state, maybe we need to do - * something if we get here from DWC2_L1(LPM sleep) state one day. - */ - if (hsotg->lx_state != DWC2_L0) - return 0; - - hprt0 = dwc2_read_hprt0(hsotg); - if (hprt0 & HPRT0_CONNSTS) { - dwc2_port_suspend(hsotg, 1); - } else { - u32 pcgctl = readl(hsotg->regs + PCGCTL); - - pcgctl |= PCGCTL_STOPPCLK; - writel(pcgctl, hsotg->regs + PCGCTL); - } - - return 0; -} - -static int _dwc2_hcd_resume(struct usb_hcd *hcd) -{ - struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); - u32 hprt0; - - if (!((hsotg->op_state == OTG_STATE_B_HOST) || - (hsotg->op_state == OTG_STATE_A_HOST))) - return 0; - - if (hsotg->lx_state != DWC2_L2) - return 0; - - hprt0 = dwc2_read_hprt0(hsotg); - if ((hprt0 & HPRT0_CONNSTS) && (hprt0 & HPRT0_SUSP)) - dwc2_port_resume(hsotg); - else - writel(0, hsotg->regs + PCGCTL); - - return 0; -} - /* Returns the current frame number */ static int _dwc2_hcd_get_frame_number(struct usb_hcd *hcd) { @@ -2736,9 +2675,6 @@ static struct hc_driver dwc2_hc_driver = { .hub_status_data = _dwc2_hcd_hub_status_data, .hub_control = _dwc2_hcd_hub_control, .clear_tt_buffer_complete = _dwc2_hcd_clear_tt_buffer_complete, - - .bus_suspend = _dwc2_hcd_suspend, - .bus_resume = _dwc2_hcd_resume, }; /* diff --git a/drivers/usb/dwc2/hw.h b/drivers/usb/dwc2/hw.h index 51248b935493..d0a5ed8fa15a 100644 --- a/drivers/usb/dwc2/hw.h +++ b/drivers/usb/dwc2/hw.h @@ -294,6 +294,7 @@ #define GHWCFG4_NUM_IN_EPS_MASK (0xf << 26) #define GHWCFG4_NUM_IN_EPS_SHIFT 26 #define GHWCFG4_DED_FIFO_EN (1 << 25) +#define GHWCFG4_DED_FIFO_SHIFT 25 #define GHWCFG4_SESSION_END_FILT_EN (1 << 24) #define GHWCFG4_B_VALID_FILT_EN (1 << 23) #define GHWCFG4_A_VALID_FILT_EN (1 << 22) @@ -541,6 +542,7 @@ #define DIEPINT(_a) HSOTG_REG(0x908 + ((_a) * 0x20)) #define DOEPINT(_a) HSOTG_REG(0xB08 + ((_a) * 0x20)) +#define DXEPINT_SETUP_RCVD (1 << 15) #define DXEPINT_INEPNAKEFF (1 << 6) #define DXEPINT_BACK2BACKSETUP (1 << 6) #define DXEPINT_INTKNEPMIS (1 << 5) diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 6a795aa2ff05..ae095f009b4f 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -155,6 +155,8 @@ static int dwc2_driver_probe(struct platform_device *dev) struct dwc2_core_params defparams; struct dwc2_hsotg *hsotg; struct resource *res; + struct phy *phy; + struct usb_phy *uphy; int retval; int irq; @@ -212,6 +214,24 @@ static int dwc2_driver_probe(struct platform_device *dev) hsotg->dr_mode = of_usb_get_dr_mode(dev->dev.of_node); + /* + * Attempt to find a generic PHY, then look for an old style + * USB PHY + */ + phy = devm_phy_get(&dev->dev, "usb2-phy"); + if (IS_ERR(phy)) { + hsotg->phy = NULL; + uphy = devm_usb_get_phy(&dev->dev, USB_PHY_TYPE_USB2); + if (IS_ERR(uphy)) + hsotg->uphy = NULL; + else + hsotg->uphy = uphy; + } else { + hsotg->phy = phy; + phy_power_on(hsotg->phy); + phy_init(hsotg->phy); + } + spin_lock_init(&hsotg->lock); mutex_init(&hsotg->init_mutex); retval = dwc2_gadget_init(hsotg, irq); @@ -231,8 +251,15 @@ static int __maybe_unused dwc2_suspend(struct device *dev) struct dwc2_hsotg *dwc2 = dev_get_drvdata(dev); int ret = 0; - if (dwc2_is_device_mode(dwc2)) + if (dwc2_is_device_mode(dwc2)) { ret = s3c_hsotg_suspend(dwc2); + } else { + if (dwc2->lx_state == DWC2_L0) + return 0; + phy_exit(dwc2->phy); + phy_power_off(dwc2->phy); + + } return ret; } @@ -241,8 +268,13 @@ static int __maybe_unused dwc2_resume(struct device *dev) struct dwc2_hsotg *dwc2 = dev_get_drvdata(dev); int ret = 0; - if (dwc2_is_device_mode(dwc2)) + if (dwc2_is_device_mode(dwc2)) { ret = s3c_hsotg_resume(dwc2); + } else { + phy_power_on(dwc2->phy); + phy_init(dwc2->phy); + + } return ret; } diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index 58b5b2cde4c5..edbf9c85af7e 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -104,12 +104,6 @@ config USB_DWC3_DEBUG help Say Y here to enable debugging messages on DWC3 Driver. -config USB_DWC3_VERBOSE - bool "Enable Verbose Debugging Messages" - depends on USB_DWC3_DEBUG - help - Say Y here to enable verbose debugging messages on DWC3 Driver. - config DWC3_HOST_USB3_LPM_ENABLE bool "Enable USB3 LPM Capability" depends on USB_DWC3_HOST=y || USB_DWC3_DUAL_ROLE=y diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index bb34fbcfeab3..46172f47f02d 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -2,7 +2,6 @@ CFLAGS_trace.o := -I$(src) ccflags-$(CONFIG_USB_DWC3_DEBUG) := -DDEBUG -ccflags-$(CONFIG_USB_DWC3_VERBOSE) += -DVERBOSE_DEBUG obj-$(CONFIG_USB_DWC3) += dwc3.o diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 25ddc39efad8..9f0e209b8f6c 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -345,7 +345,7 @@ static void dwc3_core_num_eps(struct dwc3 *dwc) dwc->num_in_eps = DWC3_NUM_IN_EPS(parms); dwc->num_out_eps = DWC3_NUM_EPS(parms) - dwc->num_in_eps; - dev_vdbg(dwc->dev, "found %d IN and %d OUT endpoints\n", + dwc3_trace(trace_dwc3_core, "found %d IN and %d OUT endpoints", dwc->num_in_eps, dwc->num_out_eps); } diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 4bb9aa696ede..d201910b892f 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -431,7 +431,6 @@ struct dwc3_event_buffer { * @dwc: pointer to DWC controller * @saved_state: ep state saved during hibernation * @flags: endpoint flags (wedged, stalled, ...) - * @current_trb: index of current used trb * @number: endpoint number (1 - 15) * @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK * @resource_index: Resource transfer index @@ -464,8 +463,6 @@ struct dwc3_ep { /* This last one is specific to EP0 */ #define DWC3_EP0_DIR_IN (1 << 31) - unsigned current_trb; - u8 number; u8 type; u8 resource_index; @@ -685,7 +682,6 @@ struct dwc3_scratchpad_array { * @is_utmi_l1_suspend: the core asserts output signal * 0 - utmi_sleep_n * 1 - utmi_l1_suspend_n - * @is_selfpowered: true when we are selfpowered * @is_fpga: true when we are using the FPGA board * @needs_fifo_resize: not all users might want fifo resizing, flag it * @pullups_connected: true when Run/Stop bit is set @@ -809,7 +805,6 @@ struct dwc3 { unsigned has_hibernation:1; unsigned has_lpm_erratum:1; unsigned is_utmi_l1_suspend:1; - unsigned is_selfpowered:1; unsigned is_fpga:1; unsigned needs_fifo_resize:1; unsigned pullups_connected:1; diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index b642a2f998f9..8d950569d557 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -22,9 +22,6 @@ #include <linux/pci.h> #include <linux/platform_device.h> -#include <linux/usb/otg.h> -#include <linux/usb/usb_phy_generic.h> - #include "platform_data.h" /* FIXME define these in <linux/pci_ids.h> */ @@ -36,66 +33,41 @@ #define PCI_DEVICE_ID_INTEL_SPTLP 0x9d30 #define PCI_DEVICE_ID_INTEL_SPTH 0xa130 -struct dwc3_pci { - struct device *dev; - struct platform_device *dwc3; - struct platform_device *usb2_phy; - struct platform_device *usb3_phy; -}; - -static int dwc3_pci_register_phys(struct dwc3_pci *glue) +static int dwc3_pci_quirks(struct pci_dev *pdev) { - struct usb_phy_generic_platform_data pdata; - struct platform_device *pdev; - int ret; + if (pdev->vendor == PCI_VENDOR_ID_AMD && + pdev->device == PCI_DEVICE_ID_AMD_NL_USB) { + struct dwc3_platform_data pdata; - memset(&pdata, 0x00, sizeof(pdata)); + memset(&pdata, 0, sizeof(pdata)); - pdev = platform_device_alloc("usb_phy_generic", 0); - if (!pdev) - return -ENOMEM; - - glue->usb2_phy = pdev; - pdata.type = USB_PHY_TYPE_USB2; - pdata.gpio_reset = -1; + pdata.has_lpm_erratum = true; + pdata.lpm_nyet_threshold = 0xf; - ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata)); - if (ret) - goto err1; + pdata.u2exit_lfps_quirk = true; + pdata.u2ss_inp3_quirk = true; + pdata.req_p1p2p3_quirk = true; + pdata.del_p1p2p3_quirk = true; + pdata.del_phy_power_chg_quirk = true; + pdata.lfps_filter_quirk = true; + pdata.rx_detect_poll_quirk = true; - pdev = platform_device_alloc("usb_phy_generic", 1); - if (!pdev) { - ret = -ENOMEM; - goto err1; - } + pdata.tx_de_emphasis_quirk = true; + pdata.tx_de_emphasis = 1; - glue->usb3_phy = pdev; - pdata.type = USB_PHY_TYPE_USB3; - - ret = platform_device_add_data(glue->usb3_phy, &pdata, sizeof(pdata)); - if (ret) - goto err2; - - ret = platform_device_add(glue->usb2_phy); - if (ret) - goto err2; + /* + * FIXME these quirks should be removed when AMD NL + * taps out + */ + pdata.disable_scramble_quirk = true; + pdata.dis_u3_susphy_quirk = true; + pdata.dis_u2_susphy_quirk = true; - ret = platform_device_add(glue->usb3_phy); - if (ret) - goto err3; + return platform_device_add_data(pci_get_drvdata(pdev), &pdata, + sizeof(pdata)); + } return 0; - -err3: - platform_device_del(glue->usb2_phy); - -err2: - platform_device_put(glue->usb3_phy); - -err1: - platform_device_put(glue->usb2_phy); - - return ret; } static int dwc3_pci_probe(struct pci_dev *pci, @@ -103,18 +75,8 @@ static int dwc3_pci_probe(struct pci_dev *pci, { struct resource res[2]; struct platform_device *dwc3; - struct dwc3_pci *glue; int ret; struct device *dev = &pci->dev; - struct dwc3_platform_data dwc3_pdata; - - memset(&dwc3_pdata, 0x00, sizeof(dwc3_pdata)); - - glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL); - if (!glue) - return -ENOMEM; - - glue->dev = dev; ret = pcim_enable_device(pci); if (ret) { @@ -124,12 +86,6 @@ static int dwc3_pci_probe(struct pci_dev *pci, pci_set_master(pci); - ret = dwc3_pci_register_phys(glue); - if (ret) { - dev_err(dev, "couldn't register PHYs\n"); - return ret; - } - dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO); if (!dwc3) { dev_err(dev, "couldn't allocate dwc3 device\n"); @@ -147,70 +103,34 @@ static int dwc3_pci_probe(struct pci_dev *pci, res[1].name = "dwc_usb3"; res[1].flags = IORESOURCE_IRQ; - if (pci->vendor == PCI_VENDOR_ID_AMD && - pci->device == PCI_DEVICE_ID_AMD_NL_USB) { - dwc3_pdata.has_lpm_erratum = true; - dwc3_pdata.lpm_nyet_threshold = 0xf; - - dwc3_pdata.u2exit_lfps_quirk = true; - dwc3_pdata.u2ss_inp3_quirk = true; - dwc3_pdata.req_p1p2p3_quirk = true; - dwc3_pdata.del_p1p2p3_quirk = true; - dwc3_pdata.del_phy_power_chg_quirk = true; - dwc3_pdata.lfps_filter_quirk = true; - dwc3_pdata.rx_detect_poll_quirk = true; - - dwc3_pdata.tx_de_emphasis_quirk = true; - dwc3_pdata.tx_de_emphasis = 1; - - /* - * FIXME these quirks should be removed when AMD NL - * taps out - */ - dwc3_pdata.disable_scramble_quirk = true; - dwc3_pdata.dis_u3_susphy_quirk = true; - dwc3_pdata.dis_u2_susphy_quirk = true; - } - ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res)); if (ret) { dev_err(dev, "couldn't add resources to dwc3 device\n"); return ret; } - pci_set_drvdata(pci, glue); - - ret = platform_device_add_data(dwc3, &dwc3_pdata, sizeof(dwc3_pdata)); + pci_set_drvdata(pci, dwc3); + ret = dwc3_pci_quirks(pci); if (ret) - goto err3; - - dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask); + goto err; - dwc3->dev.dma_mask = dev->dma_mask; - dwc3->dev.dma_parms = dev->dma_parms; dwc3->dev.parent = dev; - glue->dwc3 = dwc3; ret = platform_device_add(dwc3); if (ret) { dev_err(dev, "failed to register dwc3 device\n"); - goto err3; + goto err; } return 0; - -err3: +err: platform_device_put(dwc3); return ret; } static void dwc3_pci_remove(struct pci_dev *pci) { - struct dwc3_pci *glue = pci_get_drvdata(pci); - - platform_device_unregister(glue->dwc3); - platform_device_unregister(glue->usb2_phy); - platform_device_unregister(glue->usb3_phy); + platform_device_unregister(pci_get_drvdata(pci)); } static const struct pci_device_id dwc3_pci_id_table[] = { @@ -228,45 +148,11 @@ static const struct pci_device_id dwc3_pci_id_table[] = { }; MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); -#ifdef CONFIG_PM_SLEEP -static int dwc3_pci_suspend(struct device *dev) -{ - struct pci_dev *pci = to_pci_dev(dev); - - pci_disable_device(pci); - - return 0; -} - -static int dwc3_pci_resume(struct device *dev) -{ - struct pci_dev *pci = to_pci_dev(dev); - int ret; - - ret = pci_enable_device(pci); - if (ret) { - dev_err(dev, "can't re-enable device --> %d\n", ret); - return ret; - } - - pci_set_master(pci); - - return 0; -} -#endif /* CONFIG_PM_SLEEP */ - -static const struct dev_pm_ops dwc3_pci_dev_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume) -}; - static struct pci_driver dwc3_pci_driver = { .name = "dwc3-pci", .id_table = dwc3_pci_id_table, .probe = dwc3_pci_probe, .remove = dwc3_pci_remove, - .driver = { - .pm = &dwc3_pci_dev_pm_ops, - }, }; MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 1bc77a3b4997..2ef3c8d6a9db 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -344,7 +344,7 @@ static int dwc3_ep0_handle_status(struct dwc3 *dwc, /* * LTM will be set once we know how to set this in HW. */ - usb_status |= dwc->is_selfpowered << USB_DEVICE_SELF_POWERED; + usb_status |= dwc->gadget.is_selfpowered; if (dwc->speed == DWC3_DSTS_SUPERSPEED) { reg = dwc3_readl(dwc->regs, DWC3_DCTL); diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 8f65ab3a3b92..a03a485205c7 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -139,7 +139,8 @@ int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state) udelay(5); } - dev_vdbg(dwc->dev, "link state change request timed out\n"); + dwc3_trace(trace_dwc3_gadget, + "link state change request timed out"); return -ETIMEDOUT; } @@ -219,7 +220,7 @@ int dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc) fifo_size |= (last_fifo_depth << 16); - dev_vdbg(dwc->dev, "%s: Fifo Addr %04x Size %d\n", + dwc3_trace(trace_dwc3_gadget, "%s: Fifo Addr %04x Size %d", dep->name, last_fifo_depth, fifo_size & 0xffff); dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(num), fifo_size); @@ -287,7 +288,8 @@ int dwc3_send_gadget_generic_command(struct dwc3 *dwc, unsigned cmd, u32 param) do { reg = dwc3_readl(dwc->regs, DWC3_DGCMD); if (!(reg & DWC3_DGCMD_CMDACT)) { - dev_vdbg(dwc->dev, "Command Complete --> %d\n", + dwc3_trace(trace_dwc3_gadget, + "Command Complete --> %d", DWC3_DGCMD_STATUS(reg)); return 0; } @@ -297,8 +299,11 @@ int dwc3_send_gadget_generic_command(struct dwc3 *dwc, unsigned cmd, u32 param) * interrupt context. */ timeout--; - if (!timeout) + if (!timeout) { + dwc3_trace(trace_dwc3_gadget, + "Command Timed Out"); return -ETIMEDOUT; + } udelay(1); } while (1); } @@ -320,7 +325,8 @@ int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep, do { reg = dwc3_readl(dwc->regs, DWC3_DEPCMD(ep)); if (!(reg & DWC3_DEPCMD_CMDACT)) { - dev_vdbg(dwc->dev, "Command Complete --> %d\n", + dwc3_trace(trace_dwc3_gadget, + "Command Complete --> %d", DWC3_DEPCMD_STATUS(reg)); return 0; } @@ -330,8 +336,11 @@ int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep, * interrupt context. */ timeout--; - if (!timeout) + if (!timeout) { + dwc3_trace(trace_dwc3_gadget, + "Command Timed Out"); return -ETIMEDOUT; + } udelay(1); } while (1); @@ -352,9 +361,6 @@ static int dwc3_alloc_trb_pool(struct dwc3_ep *dep) if (dep->trb_pool) return 0; - if (dep->number == 0 || dep->number == 1) - return 0; - dep->trb_pool = dma_alloc_coherent(dwc->dev, sizeof(struct dwc3_trb) * DWC3_TRB_NUM, &dep->trb_pool_dma, GFP_KERNEL); @@ -492,7 +498,7 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep, u32 reg; int ret; - dev_vdbg(dwc->dev, "Enabling %s\n", dep->name); + dwc3_trace(trace_dwc3_gadget, "Enabling %s", dep->name); if (!(dep->flags & DWC3_EP_ENABLED)) { ret = dwc3_gadget_start_config(dwc, dep); @@ -729,10 +735,9 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, struct dwc3_request *req, dma_addr_t dma, unsigned length, unsigned last, unsigned chain, unsigned node) { - struct dwc3 *dwc = dep->dwc; struct dwc3_trb *trb; - dev_vdbg(dwc->dev, "%s: req %p dma %08llx length %d%s%s\n", + dwc3_trace(trace_dwc3_gadget, "%s: req %p dma %08llx length %d%s%s", dep->name, req, (unsigned long long) dma, length, last ? " last" : "", chain ? " chain" : ""); @@ -934,7 +939,7 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param, u32 cmd; if (start_new && (dep->flags & DWC3_EP_BUSY)) { - dev_vdbg(dwc->dev, "%s: endpoint busy\n", dep->name); + dwc3_trace(trace_dwc3_gadget, "%s: endpoint busy", dep->name); return -EBUSY; } dep->flags &= ~DWC3_EP_PENDING_REQUEST; @@ -1005,8 +1010,9 @@ static void __dwc3_gadget_start_isoc(struct dwc3 *dwc, u32 uf; if (list_empty(&dep->request_list)) { - dev_vdbg(dwc->dev, "ISOC ep %s run out for requests.\n", - dep->name); + dwc3_trace(trace_dwc3_gadget, + "ISOC ep %s run out for requests", + dep->name); dep->flags |= DWC3_EP_PENDING_REQUEST; return; } @@ -1113,15 +1119,10 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) * handled. */ if (dep->stream_capable) { - int ret; - ret = __dwc3_gadget_kick_transfer(dep, 0, true); - if (ret && ret != -EBUSY) { - struct dwc3 *dwc = dep->dwc; - + if (ret && ret != -EBUSY) dev_dbg(dwc->dev, "%s: failed to kick transfers\n", dep->name); - } } return 0; @@ -1152,8 +1153,6 @@ static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request, goto out; } - dev_vdbg(dwc->dev, "queing request %p to %s length %d\n", - request, ep->name, request->length); trace_dwc3_ep_queue(req); ret = __dwc3_gadget_ep_queue(dep, req); @@ -1416,7 +1415,7 @@ static int dwc3_gadget_set_selfpowered(struct usb_gadget *g, unsigned long flags; spin_lock_irqsave(&dwc->lock, flags); - dwc->is_selfpowered = !!is_selfpowered; + g->is_selfpowered = !!is_selfpowered; spin_unlock_irqrestore(&dwc->lock, flags); return 0; @@ -1468,7 +1467,7 @@ static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on, int suspend) udelay(1); } while (1); - dev_vdbg(dwc->dev, "gadget %s data soft-%s\n", + dwc3_trace(trace_dwc3_gadget, "gadget %s data soft-%s", dwc->gadget_driver ? dwc->gadget_driver->function : "no-function", is_on ? "connect" : "disconnect"); @@ -1688,7 +1687,7 @@ static int dwc3_gadget_init_hw_endpoints(struct dwc3 *dwc, dep->endpoint.name = dep->name; - dev_vdbg(dwc->dev, "initializing %s\n", dep->name); + dwc3_trace(trace_dwc3_gadget, "initializing %s", dep->name); if (epnum == 0 || epnum == 1) { usb_ep_set_maxpacket_limit(&dep->endpoint, 512); @@ -1725,13 +1724,15 @@ static int dwc3_gadget_init_endpoints(struct dwc3 *dwc) ret = dwc3_gadget_init_hw_endpoints(dwc, dwc->num_out_eps, 0); if (ret < 0) { - dev_vdbg(dwc->dev, "failed to allocate OUT endpoints\n"); + dwc3_trace(trace_dwc3_gadget, + "failed to allocate OUT endpoints"); return ret; } ret = dwc3_gadget_init_hw_endpoints(dwc, dwc->num_in_eps, 1); if (ret < 0) { - dev_vdbg(dwc->dev, "failed to allocate IN endpoints\n"); + dwc3_trace(trace_dwc3_gadget, + "failed to allocate IN endpoints"); return ret; } @@ -1977,7 +1978,7 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc, } else { int ret; - dev_vdbg(dwc->dev, "%s: reason %s\n", + dwc3_trace(trace_dwc3_gadget, "%s: reason %s", dep->name, event->status & DEPEVT_STATUS_TRANSFER_ACTIVE ? "Transfer Active" @@ -2001,7 +2002,8 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc, switch (event->status) { case DEPEVT_STREAMEVT_FOUND: - dev_vdbg(dwc->dev, "Stream %d found and started\n", + dwc3_trace(trace_dwc3_gadget, + "Stream %d found and started", event->parameters); break; @@ -2015,7 +2017,7 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc, dev_dbg(dwc->dev, "%s FIFO Overrun\n", dep->name); break; case DWC3_DEPEVT_EPCMDCMPLT: - dev_vdbg(dwc->dev, "Endpoint Command Complete\n"); + dwc3_trace(trace_dwc3_gadget, "Endpoint Command Complete"); break; } } @@ -2043,6 +2045,7 @@ static void dwc3_resume_gadget(struct dwc3 *dwc) if (dwc->gadget_driver && dwc->gadget_driver->resume) { spin_unlock(&dwc->lock); dwc->gadget_driver->resume(&dwc->gadget); + spin_lock(&dwc->lock); } } @@ -2079,7 +2082,7 @@ static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum, bool force) * We have discussed this with the IP Provider and it was * suggested to giveback all requests here, but give HW some * extra time to synchronize with the interconnect. We're using - * an arbitraty 100us delay for that. + * an arbitrary 100us delay for that. * * Note also that a similar handling was tested by Synopsys * (thanks a lot Paul) and nothing bad has come out of it. @@ -2389,7 +2392,8 @@ static void dwc3_gadget_linksts_change_interrupt(struct dwc3 *dwc, (pwropt != DWC3_GHWPARAMS1_EN_PWROPT_HIB)) { if ((dwc->link_state == DWC3_LINK_STATE_U3) && (next == DWC3_LINK_STATE_RESUME)) { - dev_vdbg(dwc->dev, "ignoring transition U3 -> Resume\n"); + dwc3_trace(trace_dwc3_gadget, + "ignoring transition U3 -> Resume"); return; } } @@ -2511,22 +2515,22 @@ static void dwc3_gadget_interrupt(struct dwc3 *dwc, dwc3_gadget_linksts_change_interrupt(dwc, event->event_info); break; case DWC3_DEVICE_EVENT_EOPF: - dev_vdbg(dwc->dev, "End of Periodic Frame\n"); + dwc3_trace(trace_dwc3_gadget, "End of Periodic Frame"); break; case DWC3_DEVICE_EVENT_SOF: - dev_vdbg(dwc->dev, "Start of Periodic Frame\n"); + dwc3_trace(trace_dwc3_gadget, "Start of Periodic Frame"); break; case DWC3_DEVICE_EVENT_ERRATIC_ERROR: - dev_vdbg(dwc->dev, "Erratic Error\n"); + dwc3_trace(trace_dwc3_gadget, "Erratic Error"); break; case DWC3_DEVICE_EVENT_CMD_CMPL: - dev_vdbg(dwc->dev, "Command Complete\n"); + dwc3_trace(trace_dwc3_gadget, "Command Complete"); break; case DWC3_DEVICE_EVENT_OVERFLOW: - dev_vdbg(dwc->dev, "Overflow\n"); + dwc3_trace(trace_dwc3_gadget, "Overflow"); break; default: - dev_dbg(dwc->dev, "UNKNOWN IRQ %d\n", event->type); + dev_WARN(dwc->dev, "UNKNOWN IRQ %d\n", event->type); } } diff --git a/drivers/usb/dwc3/trace.h b/drivers/usb/dwc3/trace.h index 9fc20b33dd8e..9c10669ab91f 100644 --- a/drivers/usb/dwc3/trace.h +++ b/drivers/usb/dwc3/trace.h @@ -47,6 +47,16 @@ DEFINE_EVENT(dwc3_log_msg, dwc3_writel, TP_ARGS(vaf) ); +DEFINE_EVENT(dwc3_log_msg, dwc3_gadget, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf) +); + +DEFINE_EVENT(dwc3_log_msg, dwc3_core, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf) +); + DEFINE_EVENT(dwc3_log_msg, dwc3_ep0, TP_PROTO(struct va_format *vaf), TP_ARGS(vaf) diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 747ef53bda14..96539038c03a 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -423,6 +423,17 @@ config USB_CONFIGFS_F_HID For more information, see Documentation/usb/gadget_hid.txt. +config USB_CONFIGFS_F_UVC + bool "USB Webcam function" + depends on USB_CONFIGFS + depends on VIDEO_DEV + select VIDEOBUF2_VMALLOC + select USB_F_UVC + help + The Webcam function acts as a composite USB Audio and Video Class + device. It provides a userspace API to process UVC control requests + and stream video data to the host. + source "drivers/usb/gadget/legacy/Kconfig" endchoice diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 617835348569..13adfd1a3f54 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1655,7 +1655,7 @@ unknown: * OS descriptors handling */ if (cdev->use_os_string && cdev->os_desc_config && - (ctrl->bRequest & USB_TYPE_VENDOR) && + (ctrl->bRequestType & USB_TYPE_VENDOR) && ctrl->bRequest == cdev->b_vendor_code) { struct usb_request *req; struct usb_configuration *os_desc_cfg; diff --git a/drivers/usb/gadget/function/Makefile b/drivers/usb/gadget/function/Makefile index dd68091d92f0..f71b1aaa0edf 100644 --- a/drivers/usb/gadget/function/Makefile +++ b/drivers/usb/gadget/function/Makefile @@ -36,7 +36,7 @@ usb_f_uac1-y := f_uac1.o u_uac1.o obj-$(CONFIG_USB_F_UAC1) += usb_f_uac1.o usb_f_uac2-y := f_uac2.o obj-$(CONFIG_USB_F_UAC2) += usb_f_uac2.o -usb_f_uvc-y := f_uvc.o uvc_queue.o uvc_v4l2.o uvc_video.o +usb_f_uvc-y := f_uvc.o uvc_queue.o uvc_v4l2.o uvc_video.o uvc_configfs.o obj-$(CONFIG_USB_F_UVC) += usb_f_uvc.o usb_f_midi-y := f_midi.o obj-$(CONFIG_USB_F_MIDI) += usb_f_midi.o diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 63314ede7ba6..af98b096af2f 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -31,6 +31,7 @@ #include <linux/aio.h> #include <linux/mmu_context.h> #include <linux/poll.h> +#include <linux/eventfd.h> #include "u_fs.h" #include "u_f.h" @@ -153,6 +154,8 @@ struct ffs_io_data { struct usb_ep *ep; struct usb_request *req; + + struct ffs_data *ffs; }; struct ffs_desc_helper { @@ -390,17 +393,20 @@ done_spin: return ret; } +/* Called with ffs->ev.waitq.lock and ffs->mutex held, both released on exit. */ static ssize_t __ffs_ep0_read_events(struct ffs_data *ffs, char __user *buf, size_t n) { /* - * We are holding ffs->ev.waitq.lock and ffs->mutex and we need - * to release them. + * n cannot be bigger than ffs->ev.count, which cannot be bigger than + * size of ffs->ev.types array (which is four) so that's how much space + * we reserve. */ - struct usb_functionfs_event events[n]; + struct usb_functionfs_event events[ARRAY_SIZE(ffs->ev.types)]; + const size_t size = n * sizeof *events; unsigned i = 0; - memset(events, 0, sizeof events); + memset(events, 0, size); do { events[i].type = ffs->ev.types[i]; @@ -410,19 +416,15 @@ static ssize_t __ffs_ep0_read_events(struct ffs_data *ffs, char __user *buf, } } while (++i < n); - if (n < ffs->ev.count) { - ffs->ev.count -= n; + ffs->ev.count -= n; + if (ffs->ev.count) memmove(ffs->ev.types, ffs->ev.types + n, ffs->ev.count * sizeof *ffs->ev.types); - } else { - ffs->ev.count = 0; - } spin_unlock_irq(&ffs->ev.waitq.lock); mutex_unlock(&ffs->mutex); - return unlikely(__copy_to_user(buf, events, sizeof events)) - ? -EFAULT : sizeof events; + return unlikely(__copy_to_user(buf, events, size)) ? -EFAULT : size; } static ssize_t ffs_ep0_read(struct file *file, char __user *buf, @@ -606,6 +608,8 @@ static unsigned int ffs_ep0_poll(struct file *file, poll_table *wait) } case FFS_CLOSING: break; + case FFS_DEACTIVATED: + break; } mutex_unlock(&ffs->mutex); @@ -673,6 +677,9 @@ static void ffs_user_copy_worker(struct work_struct *work) aio_complete(io_data->kiocb, ret, ret); + if (io_data->ffs->ffs_eventfd && !io_data->kiocb->ki_eventfd) + eventfd_signal(io_data->ffs->ffs_eventfd, 1); + usb_ep_free_request(io_data->ep, io_data->req); io_data->kiocb->private = NULL; @@ -826,6 +833,7 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) io_data->buf = data; io_data->ep = ep->ep; io_data->req = req; + io_data->ffs = epfile->ffs; req->context = io_data; req->complete = ffs_epfile_async_io_complete; @@ -1180,6 +1188,7 @@ struct ffs_sb_fill_data { struct ffs_file_perms perms; umode_t root_mode; const char *dev_name; + bool no_disconnect; struct ffs_data *ffs_data; }; @@ -1250,6 +1259,12 @@ static int ffs_fs_parse_opts(struct ffs_sb_fill_data *data, char *opts) /* Interpret option */ switch (eq - opts) { + case 13: + if (!memcmp(opts, "no_disconnect", 13)) + data->no_disconnect = !!value; + else + goto invalid; + break; case 5: if (!memcmp(opts, "rmode", 5)) data->root_mode = (value & 0555) | S_IFDIR; @@ -1314,6 +1329,7 @@ ffs_fs_mount(struct file_system_type *t, int flags, .gid = GLOBAL_ROOT_GID, }, .root_mode = S_IFDIR | 0500, + .no_disconnect = false, }; struct dentry *rv; int ret; @@ -1330,6 +1346,7 @@ ffs_fs_mount(struct file_system_type *t, int flags, if (unlikely(!ffs)) return ERR_PTR(-ENOMEM); ffs->file_perms = data.perms; + ffs->no_disconnect = data.no_disconnect; ffs->dev_name = kstrdup(dev_name, GFP_KERNEL); if (unlikely(!ffs->dev_name)) { @@ -1361,6 +1378,7 @@ ffs_fs_kill_sb(struct super_block *sb) kill_litter_super(sb); if (sb->s_fs_info) { ffs_release_dev(sb->s_fs_info); + ffs_data_closed(sb->s_fs_info); ffs_data_put(sb->s_fs_info); } } @@ -1417,7 +1435,11 @@ static void ffs_data_opened(struct ffs_data *ffs) ENTER(); atomic_inc(&ffs->ref); - atomic_inc(&ffs->opened); + if (atomic_add_return(1, &ffs->opened) == 1 && + ffs->state == FFS_DEACTIVATED) { + ffs->state = FFS_CLOSING; + ffs_data_reset(ffs); + } } static void ffs_data_put(struct ffs_data *ffs) @@ -1439,6 +1461,21 @@ static void ffs_data_closed(struct ffs_data *ffs) ENTER(); if (atomic_dec_and_test(&ffs->opened)) { + if (ffs->no_disconnect) { + ffs->state = FFS_DEACTIVATED; + if (ffs->epfiles) { + ffs_epfiles_destroy(ffs->epfiles, + ffs->eps_count); + ffs->epfiles = NULL; + } + if (ffs->setup_state == FFS_SETUP_PENDING) + __ffs_ep0_stall(ffs); + } else { + ffs->state = FFS_CLOSING; + ffs_data_reset(ffs); + } + } + if (atomic_read(&ffs->opened) < 0) { ffs->state = FFS_CLOSING; ffs_data_reset(ffs); } @@ -1480,6 +1517,9 @@ static void ffs_data_clear(struct ffs_data *ffs) if (ffs->epfiles) ffs_epfiles_destroy(ffs->epfiles, ffs->eps_count); + if (ffs->ffs_eventfd) + eventfd_ctx_put(ffs->ffs_eventfd); + kfree(ffs->raw_descs_data); kfree(ffs->raw_strings); kfree(ffs->stringtabs); @@ -1581,10 +1621,10 @@ static int ffs_epfiles_create(struct ffs_data *ffs) mutex_init(&epfile->mutex); init_waitqueue_head(&epfile->wait); if (ffs->user_flags & FUNCTIONFS_VIRTUAL_ADDR) - sprintf(epfiles->name, "ep%02x", ffs->eps_addrmap[i]); + sprintf(epfile->name, "ep%02x", ffs->eps_addrmap[i]); else - sprintf(epfiles->name, "ep%u", i); - epfile->dentry = ffs_sb_create_file(ffs->sb, epfiles->name, + sprintf(epfile->name, "ep%u", i); + epfile->dentry = ffs_sb_create_file(ffs->sb, epfile->name, epfile, &ffs_epfile_operations); if (unlikely(!epfile->dentry)) { @@ -1616,7 +1656,6 @@ static void ffs_epfiles_destroy(struct ffs_epfile *epfiles, unsigned count) kfree(epfiles); } - static void ffs_func_eps_disable(struct ffs_function *func) { struct ffs_ep *ep = func->eps; @@ -1629,10 +1668,12 @@ static void ffs_func_eps_disable(struct ffs_function *func) /* pending requests get nuked */ if (likely(ep->ep)) usb_ep_disable(ep->ep); - epfile->ep = NULL; - ++ep; - ++epfile; + + if (epfile) { + epfile->ep = NULL; + ++epfile; + } } while (--count); spin_unlock_irqrestore(&func->ffs->eps_lock, flags); } @@ -2138,7 +2179,8 @@ static int __ffs_data_got_descs(struct ffs_data *ffs, FUNCTIONFS_HAS_HS_DESC | FUNCTIONFS_HAS_SS_DESC | FUNCTIONFS_HAS_MS_OS_DESC | - FUNCTIONFS_VIRTUAL_ADDR)) { + FUNCTIONFS_VIRTUAL_ADDR | + FUNCTIONFS_EVENTFD)) { ret = -ENOSYS; goto error; } @@ -2149,6 +2191,20 @@ static int __ffs_data_got_descs(struct ffs_data *ffs, goto error; } + if (flags & FUNCTIONFS_EVENTFD) { + if (len < 4) + goto error; + ffs->ffs_eventfd = + eventfd_ctx_fdget((int)get_unaligned_le32(data)); + if (IS_ERR(ffs->ffs_eventfd)) { + ret = PTR_ERR(ffs->ffs_eventfd); + ffs->ffs_eventfd = NULL; + goto error; + } + data += 4; + len -= 4; + } + /* Read fs_count, hs_count and ss_count (if present) */ for (i = 0; i < 3; ++i) { if (!(flags & (1 << i))) { @@ -2377,6 +2433,13 @@ static void __ffs_event_add(struct ffs_data *ffs, if (ffs->setup_state == FFS_SETUP_PENDING) ffs->setup_state = FFS_SETUP_CANCELLED; + /* + * Logic of this function guarantees that there are at most four pending + * evens on ffs->ev.types queue. This is important because the queue + * has space for four elements only and __ffs_ep0_read_events function + * depends on that limit as well. If more event types are added, those + * limits have to be revisited or guaranteed to still hold. + */ switch (type) { case FUNCTIONFS_RESUME: rem_type2 = FUNCTIONFS_SUSPEND; @@ -2416,6 +2479,8 @@ static void __ffs_event_add(struct ffs_data *ffs, pr_vdebug("adding event %d\n", type); ffs->ev.types[ffs->ev.count++] = type; wake_up_locked(&ffs->ev.waitq); + if (ffs->ffs_eventfd) + eventfd_signal(ffs->ffs_eventfd, 1); } static void ffs_event_add(struct ffs_data *ffs, @@ -2888,6 +2953,13 @@ static int ffs_func_bind(struct usb_configuration *c, /* Other USB function hooks *************************************************/ +static void ffs_reset_work(struct work_struct *work) +{ + struct ffs_data *ffs = container_of(work, + struct ffs_data, reset_work); + ffs_data_reset(ffs); +} + static int ffs_func_set_alt(struct usb_function *f, unsigned interface, unsigned alt) { @@ -2904,6 +2976,13 @@ static int ffs_func_set_alt(struct usb_function *f, if (ffs->func) ffs_func_eps_disable(ffs->func); + if (ffs->state == FFS_DEACTIVATED) { + ffs->state = FFS_CLOSING; + INIT_WORK(&ffs->reset_work, ffs_reset_work); + schedule_work(&ffs->reset_work); + return -ENODEV; + } + if (ffs->state != FFS_ACTIVE) return -ENODEV; diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c index a1bc3e3a0b09..426d69a9c018 100644 --- a/drivers/usb/gadget/function/f_hid.c +++ b/drivers/usb/gadget/function/f_hid.c @@ -759,7 +759,7 @@ static struct f_hid_opts_attribute f_hid_opts_##name = \ F_HID_OPT(subclass, 8, 255); F_HID_OPT(protocol, 8, 255); -F_HID_OPT(report_length, 16, 65536); +F_HID_OPT(report_length, 16, 65535); static ssize_t f_hid_opts_report_desc_show(struct f_hid_opts *opts, char *page) { diff --git a/drivers/usb/gadget/function/f_sourcesink.c b/drivers/usb/gadget/function/f_sourcesink.c index 80be25b32cd7..e07c50ced64d 100644 --- a/drivers/usb/gadget/function/f_sourcesink.c +++ b/drivers/usb/gadget/function/f_sourcesink.c @@ -1214,7 +1214,7 @@ static ssize_t f_ss_opts_pattern_show(struct f_ss_opts *opts, char *page) int result; mutex_lock(&opts->lock); - result = sprintf(page, "%d", opts->pattern); + result = sprintf(page, "%u", opts->pattern); mutex_unlock(&opts->lock); return result; @@ -1258,7 +1258,7 @@ static ssize_t f_ss_opts_isoc_interval_show(struct f_ss_opts *opts, char *page) int result; mutex_lock(&opts->lock); - result = sprintf(page, "%d", opts->isoc_interval); + result = sprintf(page, "%u", opts->isoc_interval); mutex_unlock(&opts->lock); return result; @@ -1302,7 +1302,7 @@ static ssize_t f_ss_opts_isoc_maxpacket_show(struct f_ss_opts *opts, char *page) int result; mutex_lock(&opts->lock); - result = sprintf(page, "%d", opts->isoc_maxpacket); + result = sprintf(page, "%u", opts->isoc_maxpacket); mutex_unlock(&opts->lock); return result; @@ -1346,7 +1346,7 @@ static ssize_t f_ss_opts_isoc_mult_show(struct f_ss_opts *opts, char *page) int result; mutex_lock(&opts->lock); - result = sprintf(page, "%d", opts->isoc_mult); + result = sprintf(page, "%u", opts->isoc_mult); mutex_unlock(&opts->lock); return result; @@ -1390,7 +1390,7 @@ static ssize_t f_ss_opts_isoc_maxburst_show(struct f_ss_opts *opts, char *page) int result; mutex_lock(&opts->lock); - result = sprintf(page, "%d", opts->isoc_maxburst); + result = sprintf(page, "%u", opts->isoc_maxburst); mutex_unlock(&opts->lock); return result; @@ -1434,7 +1434,7 @@ static ssize_t f_ss_opts_bulk_buflen_show(struct f_ss_opts *opts, char *page) int result; mutex_lock(&opts->lock); - result = sprintf(page, "%d", opts->bulk_buflen); + result = sprintf(page, "%u", opts->bulk_buflen); mutex_unlock(&opts->lock); return result; @@ -1473,7 +1473,7 @@ static ssize_t f_ss_opts_int_interval_show(struct f_ss_opts *opts, char *page) int result; mutex_lock(&opts->lock); - result = sprintf(page, "%d", opts->int_interval); + result = sprintf(page, "%u", opts->int_interval); mutex_unlock(&opts->lock); return result; @@ -1517,7 +1517,7 @@ static ssize_t f_ss_opts_int_maxpacket_show(struct f_ss_opts *opts, char *page) int result; mutex_lock(&opts->lock); - result = sprintf(page, "%d", opts->int_maxpacket); + result = sprintf(page, "%u", opts->int_maxpacket); mutex_unlock(&opts->lock); return result; @@ -1561,7 +1561,7 @@ static ssize_t f_ss_opts_int_mult_show(struct f_ss_opts *opts, char *page) int result; mutex_lock(&opts->lock); - result = sprintf(page, "%d", opts->int_mult); + result = sprintf(page, "%u", opts->int_mult); mutex_unlock(&opts->lock); return result; @@ -1605,7 +1605,7 @@ static ssize_t f_ss_opts_int_maxburst_show(struct f_ss_opts *opts, char *page) int result; mutex_lock(&opts->lock); - result = sprintf(page, "%d", opts->int_maxburst); + result = sprintf(page, "%u", opts->int_maxburst); mutex_unlock(&opts->lock); return result; diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c index e9715845f82e..9719abfb6145 100644 --- a/drivers/usb/gadget/function/f_uac1.c +++ b/drivers/usb/gadget/function/f_uac1.c @@ -31,7 +31,7 @@ static int generic_get_cmd(struct usb_audio_control *con, u8 cmd); */ #define F_AUDIO_AC_INTERFACE 0 #define F_AUDIO_AS_INTERFACE 1 -#define F_AUDIO_NUM_INTERFACES 2 +#define F_AUDIO_NUM_INTERFACES 1 /* B.3.1 Standard AC Interface Descriptor */ static struct usb_interface_descriptor ac_interface_desc = { @@ -42,14 +42,18 @@ static struct usb_interface_descriptor ac_interface_desc = { .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL, }; -DECLARE_UAC_AC_HEADER_DESCRIPTOR(2); +/* + * The number of AudioStreaming and MIDIStreaming interfaces + * in the Audio Interface Collection + */ +DECLARE_UAC_AC_HEADER_DESCRIPTOR(1); #define UAC_DT_AC_HEADER_LENGTH UAC_DT_AC_HEADER_SIZE(F_AUDIO_NUM_INTERFACES) /* 1 input terminal, 1 output terminal and 1 feature unit */ #define UAC_DT_TOTAL_LENGTH (UAC_DT_AC_HEADER_LENGTH + UAC_DT_INPUT_TERMINAL_SIZE \ + UAC_DT_OUTPUT_TERMINAL_SIZE + UAC_DT_FEATURE_UNIT_SIZE(0)) /* B.3.2 Class-Specific AC Interface Descriptor */ -static struct uac1_ac_header_descriptor_2 ac_header_desc = { +static struct uac1_ac_header_descriptor_1 ac_header_desc = { .bLength = UAC_DT_AC_HEADER_LENGTH, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubtype = UAC_HEADER, @@ -57,8 +61,8 @@ static struct uac1_ac_header_descriptor_2 ac_header_desc = { .wTotalLength = __constant_cpu_to_le16(UAC_DT_TOTAL_LENGTH), .bInCollection = F_AUDIO_NUM_INTERFACES, .baInterfaceNr = { - [0] = F_AUDIO_AC_INTERFACE, - [1] = F_AUDIO_AS_INTERFACE, + /* Interface number of the first AudioStream interface */ + [0] = 1, } }; @@ -584,6 +588,7 @@ static int f_audio_set_alt(struct usb_function *f, unsigned intf, unsigned alt) if (intf == 1) { if (alt == 1) { + config_ep_by_speed(cdev->gadget, f, out_ep); usb_ep_enable(out_ep); out_ep->driver_data = audio; audio->copy_buf = f_audio_buffer_alloc(audio_buf_size); @@ -669,7 +674,6 @@ f_audio_bind(struct usb_configuration *c, struct usb_function *f) audio_opts = container_of(f->fi, struct f_uac1_opts, func_inst); audio->card.gadget = c->cdev->gadget; - audio_opts->card = &audio->card; /* set up ASLA audio devices */ if (!audio_opts->bound) { status = gaudio_setup(&audio->card); diff --git a/drivers/usb/gadget/function/f_uvc.c b/drivers/usb/gadget/function/f_uvc.c index 945b3bd2ca98..76891adfba7a 100644 --- a/drivers/usb/gadget/function/f_uvc.c +++ b/drivers/usb/gadget/function/f_uvc.c @@ -27,10 +27,11 @@ #include <media/v4l2-dev.h> #include <media/v4l2-event.h> +#include "u_uvc.h" #include "uvc.h" +#include "uvc_configfs.h" #include "uvc_v4l2.h" #include "uvc_video.h" -#include "u_uvc.h" unsigned int uvc_gadget_trace_param; @@ -509,6 +510,9 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) break; } + if (!uvc_control_desc || !uvc_streaming_cls) + return ERR_PTR(-ENODEV); + /* Descriptors layout * * uvc_iad @@ -605,7 +609,7 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) INFO(cdev, "uvc_function_bind\n"); - opts = to_f_uvc_opts(f->fi); + opts = fi_to_f_uvc_opts(f->fi); /* Sanity check the streaming endpoint module parameters. */ opts->streaming_interval = clamp(opts->streaming_interval, 1U, 16U); @@ -700,10 +704,27 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) /* Copy descriptors */ f->fs_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_FULL); - if (gadget_is_dualspeed(cdev->gadget)) + if (IS_ERR(f->fs_descriptors)) { + ret = PTR_ERR(f->fs_descriptors); + f->fs_descriptors = NULL; + goto error; + } + if (gadget_is_dualspeed(cdev->gadget)) { f->hs_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_HIGH); - if (gadget_is_superspeed(c->cdev->gadget)) + if (IS_ERR(f->hs_descriptors)) { + ret = PTR_ERR(f->hs_descriptors); + f->hs_descriptors = NULL; + goto error; + } + } + if (gadget_is_superspeed(c->cdev->gadget)) { f->ss_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_SUPER); + if (IS_ERR(f->ss_descriptors)) { + ret = PTR_ERR(f->ss_descriptors); + f->ss_descriptors = NULL; + goto error; + } + } /* Preallocate control endpoint request. */ uvc->control_req = usb_ep_alloc_request(cdev->gadget->ep0, GFP_KERNEL); @@ -766,27 +787,106 @@ error: static void uvc_free_inst(struct usb_function_instance *f) { - struct f_uvc_opts *opts = to_f_uvc_opts(f); + struct f_uvc_opts *opts = fi_to_f_uvc_opts(f); + mutex_destroy(&opts->lock); kfree(opts); } static struct usb_function_instance *uvc_alloc_inst(void) { struct f_uvc_opts *opts; + struct uvc_camera_terminal_descriptor *cd; + struct uvc_processing_unit_descriptor *pd; + struct uvc_output_terminal_descriptor *od; + struct uvc_color_matching_descriptor *md; + struct uvc_descriptor_header **ctl_cls; opts = kzalloc(sizeof(*opts), GFP_KERNEL); if (!opts) return ERR_PTR(-ENOMEM); opts->func_inst.free_func_inst = uvc_free_inst; - + mutex_init(&opts->lock); + + cd = &opts->uvc_camera_terminal; + cd->bLength = UVC_DT_CAMERA_TERMINAL_SIZE(3); + cd->bDescriptorType = USB_DT_CS_INTERFACE; + cd->bDescriptorSubType = UVC_VC_INPUT_TERMINAL; + cd->bTerminalID = 1; + cd->wTerminalType = cpu_to_le16(0x0201); + cd->bAssocTerminal = 0; + cd->iTerminal = 0; + cd->wObjectiveFocalLengthMin = cpu_to_le16(0); + cd->wObjectiveFocalLengthMax = cpu_to_le16(0); + cd->wOcularFocalLength = cpu_to_le16(0); + cd->bControlSize = 3; + cd->bmControls[0] = 2; + cd->bmControls[1] = 0; + cd->bmControls[2] = 0; + + pd = &opts->uvc_processing; + pd->bLength = UVC_DT_PROCESSING_UNIT_SIZE(2); + pd->bDescriptorType = USB_DT_CS_INTERFACE; + pd->bDescriptorSubType = UVC_VC_PROCESSING_UNIT; + pd->bUnitID = 2; + pd->bSourceID = 1; + pd->wMaxMultiplier = cpu_to_le16(16*1024); + pd->bControlSize = 2; + pd->bmControls[0] = 1; + pd->bmControls[1] = 0; + pd->iProcessing = 0; + + od = &opts->uvc_output_terminal; + od->bLength = UVC_DT_OUTPUT_TERMINAL_SIZE; + od->bDescriptorType = USB_DT_CS_INTERFACE; + od->bDescriptorSubType = UVC_VC_OUTPUT_TERMINAL; + od->bTerminalID = 3; + od->wTerminalType = cpu_to_le16(0x0101); + od->bAssocTerminal = 0; + od->bSourceID = 2; + od->iTerminal = 0; + + md = &opts->uvc_color_matching; + md->bLength = UVC_DT_COLOR_MATCHING_SIZE; + md->bDescriptorType = USB_DT_CS_INTERFACE; + md->bDescriptorSubType = UVC_VS_COLORFORMAT; + md->bColorPrimaries = 1; + md->bTransferCharacteristics = 1; + md->bMatrixCoefficients = 4; + + /* Prepare fs control class descriptors for configfs-based gadgets */ + ctl_cls = opts->uvc_fs_control_cls; + ctl_cls[0] = NULL; /* assigned elsewhere by configfs */ + ctl_cls[1] = (struct uvc_descriptor_header *)cd; + ctl_cls[2] = (struct uvc_descriptor_header *)pd; + ctl_cls[3] = (struct uvc_descriptor_header *)od; + ctl_cls[4] = NULL; /* NULL-terminate */ + opts->fs_control = + (const struct uvc_descriptor_header * const *)ctl_cls; + + /* Prepare hs control class descriptors for configfs-based gadgets */ + ctl_cls = opts->uvc_ss_control_cls; + ctl_cls[0] = NULL; /* assigned elsewhere by configfs */ + ctl_cls[1] = (struct uvc_descriptor_header *)cd; + ctl_cls[2] = (struct uvc_descriptor_header *)pd; + ctl_cls[3] = (struct uvc_descriptor_header *)od; + ctl_cls[4] = NULL; /* NULL-terminate */ + opts->ss_control = + (const struct uvc_descriptor_header * const *)ctl_cls; + + opts->streaming_interval = 1; + opts->streaming_maxpacket = 1024; + + uvcg_attach_configfs(opts); return &opts->func_inst; } static void uvc_free(struct usb_function *f) { struct uvc_device *uvc = to_uvc(f); - + struct f_uvc_opts *opts = container_of(f->fi, struct f_uvc_opts, + func_inst); + --opts->refcnt; kfree(uvc); } @@ -812,19 +912,39 @@ static struct usb_function *uvc_alloc(struct usb_function_instance *fi) { struct uvc_device *uvc; struct f_uvc_opts *opts; + struct uvc_descriptor_header **strm_cls; uvc = kzalloc(sizeof(*uvc), GFP_KERNEL); if (uvc == NULL) return ERR_PTR(-ENOMEM); uvc->state = UVC_STATE_DISCONNECTED; - opts = to_f_uvc_opts(fi); + opts = fi_to_f_uvc_opts(fi); + + mutex_lock(&opts->lock); + if (opts->uvc_fs_streaming_cls) { + strm_cls = opts->uvc_fs_streaming_cls; + opts->fs_streaming = + (const struct uvc_descriptor_header * const *)strm_cls; + } + if (opts->uvc_hs_streaming_cls) { + strm_cls = opts->uvc_hs_streaming_cls; + opts->hs_streaming = + (const struct uvc_descriptor_header * const *)strm_cls; + } + if (opts->uvc_ss_streaming_cls) { + strm_cls = opts->uvc_ss_streaming_cls; + opts->ss_streaming = + (const struct uvc_descriptor_header * const *)strm_cls; + } uvc->desc.fs_control = opts->fs_control; uvc->desc.ss_control = opts->ss_control; uvc->desc.fs_streaming = opts->fs_streaming; uvc->desc.hs_streaming = opts->hs_streaming; uvc->desc.ss_streaming = opts->ss_streaming; + ++opts->refcnt; + mutex_unlock(&opts->lock); /* Register the function. */ uvc->func.name = "uvc"; diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c index 6e6f87656e7b..f1fd777ef4ec 100644 --- a/drivers/usb/gadget/function/u_ether.c +++ b/drivers/usb/gadget/function/u_ether.c @@ -729,9 +729,7 @@ static int get_ether_addr_str(u8 dev_addr[ETH_ALEN], char *str, int len) if (len < 18) return -EINVAL; - snprintf(str, len, "%02x:%02x:%02x:%02x:%02x:%02x", - dev_addr[0], dev_addr[1], dev_addr[2], - dev_addr[3], dev_addr[4], dev_addr[5]); + snprintf(str, len, "%pM", dev_addr); return 18; } diff --git a/drivers/usb/gadget/function/u_fs.h b/drivers/usb/gadget/function/u_fs.h index cd128e31f808..60139854e0b1 100644 --- a/drivers/usb/gadget/function/u_fs.h +++ b/drivers/usb/gadget/function/u_fs.h @@ -19,6 +19,7 @@ #include <linux/usb/composite.h> #include <linux/list.h> #include <linux/mutex.h> +#include <linux/workqueue.h> #ifdef VERBOSE_DEBUG #ifndef pr_vdebug @@ -93,6 +94,26 @@ enum ffs_state { FFS_ACTIVE, /* + * Function is visible to host, but it's not functional. All + * setup requests are stalled and transfers on another endpoints + * are refused. All epfiles, except ep0, are deleted so there + * is no way to perform any operations on them. + * + * This state is set after closing all functionfs files, when + * mount parameter "no_disconnect=1" has been set. Function will + * remain in deactivated state until filesystem is umounted or + * ep0 is opened again. In the second case functionfs state will + * be reset, and it will be ready for descriptors and strings + * writing. + * + * This is useful only when functionfs is composed to gadget + * with another function which can perform some critical + * operations, and it's strongly desired to have this operations + * completed, even after functionfs files closure. + */ + FFS_DEACTIVATED, + + /* * All endpoints have been closed. This state is also set if * we encounter an unrecoverable error. The only * unrecoverable error is situation when after reading strings @@ -251,6 +272,10 @@ struct ffs_data { kgid_t gid; } file_perms; + struct eventfd_ctx *ffs_eventfd; + bool no_disconnect; + struct work_struct reset_work; + /* * The endpoint files, filled by ffs_epfiles_create(), * destroyed by ffs_epfiles_destroy(). diff --git a/drivers/usb/gadget/function/u_uac1.c b/drivers/usb/gadget/function/u_uac1.c index 53842a1b947f..c78c84138a28 100644 --- a/drivers/usb/gadget/function/u_uac1.c +++ b/drivers/usb/gadget/function/u_uac1.c @@ -308,8 +308,7 @@ int gaudio_setup(struct gaudio *card) */ void gaudio_cleanup(struct gaudio *the_card) { - if (the_card) { + if (the_card) gaudio_close_snd_dev(the_card); - } } diff --git a/drivers/usb/gadget/function/u_uac1.h b/drivers/usb/gadget/function/u_uac1.h index f8b17fe82efe..fe386df6dd3e 100644 --- a/drivers/usb/gadget/function/u_uac1.h +++ b/drivers/usb/gadget/function/u_uac1.h @@ -70,7 +70,6 @@ struct f_uac1_opts { unsigned fn_play_alloc:1; unsigned fn_cap_alloc:1; unsigned fn_cntl_alloc:1; - struct gaudio *card; struct mutex lock; int refcnt; }; diff --git a/drivers/usb/gadget/function/u_uvc.h b/drivers/usb/gadget/function/u_uvc.h index 2a8dfdff0332..4676b60a5063 100644 --- a/drivers/usb/gadget/function/u_uvc.h +++ b/drivers/usb/gadget/function/u_uvc.h @@ -17,8 +17,9 @@ #define U_UVC_H #include <linux/usb/composite.h> +#include <linux/usb/video.h> -#define to_f_uvc_opts(f) container_of(f, struct f_uvc_opts, func_inst) +#define fi_to_f_uvc_opts(f) container_of(f, struct f_uvc_opts, func_inst) struct f_uvc_opts { struct usb_function_instance func_inst; @@ -26,11 +27,60 @@ struct f_uvc_opts { unsigned int streaming_interval; unsigned int streaming_maxpacket; unsigned int streaming_maxburst; + + /* + * Control descriptors array pointers for full-/high-speed and + * super-speed. They point by default to the uvc_fs_control_cls and + * uvc_ss_control_cls arrays respectively. Legacy gadgets must + * override them in their gadget bind callback. + */ const struct uvc_descriptor_header * const *fs_control; const struct uvc_descriptor_header * const *ss_control; + + /* + * Streaming descriptors array pointers for full-speed, high-speed and + * super-speed. They will point to the uvc_[fhs]s_streaming_cls arrays + * for configfs-based gadgets. Legacy gadgets must initialize them in + * their gadget bind callback. + */ const struct uvc_descriptor_header * const *fs_streaming; const struct uvc_descriptor_header * const *hs_streaming; const struct uvc_descriptor_header * const *ss_streaming; + + /* Default control descriptors for configfs-based gadgets. */ + struct uvc_camera_terminal_descriptor uvc_camera_terminal; + struct uvc_processing_unit_descriptor uvc_processing; + struct uvc_output_terminal_descriptor uvc_output_terminal; + struct uvc_color_matching_descriptor uvc_color_matching; + + /* + * Control descriptors pointers arrays for full-/high-speed and + * super-speed. The first element is a configurable control header + * descriptor, the other elements point to the fixed default control + * descriptors. Used by configfs only, must not be touched by legacy + * gadgets. + */ + struct uvc_descriptor_header *uvc_fs_control_cls[5]; + struct uvc_descriptor_header *uvc_ss_control_cls[5]; + + /* + * Streaming descriptors for full-speed, high-speed and super-speed. + * Used by configfs only, must not be touched by legacy gadgets. The + * arrays are allocated at runtime as the number of descriptors isn't + * known in advance. + */ + struct uvc_descriptor_header **uvc_fs_streaming_cls; + struct uvc_descriptor_header **uvc_hs_streaming_cls; + struct uvc_descriptor_header **uvc_ss_streaming_cls; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This lock protects the descriptors from concurrent access by + * read/write and symlink creation/removal. + */ + struct mutex lock; + int refcnt; }; void uvc_set_trace_param(unsigned int trace); diff --git a/drivers/usb/gadget/function/uvc_configfs.c b/drivers/usb/gadget/function/uvc_configfs.c new file mode 100644 index 000000000000..3c0467bcb14f --- /dev/null +++ b/drivers/usb/gadget/function/uvc_configfs.c @@ -0,0 +1,2468 @@ +/* + * uvc_configfs.c + * + * Configfs support for the uvc function. + * + * Copyright (c) 2014 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include "u_uvc.h" +#include "uvc_configfs.h" + +#define UVCG_STREAMING_CONTROL_SIZE 1 + +#define CONFIGFS_ATTR_OPS_RO(_item) \ +static ssize_t _item##_attr_show(struct config_item *item, \ + struct configfs_attribute *attr, \ + char *page) \ +{ \ + struct _item *_item = to_##_item(item); \ + struct _item##_attribute *_item##_attr = \ + container_of(attr, struct _item##_attribute, attr); \ + ssize_t ret = 0; \ + \ + if (_item##_attr->show) \ + ret = _item##_attr->show(_item, page); \ + return ret; \ +} + +static inline struct f_uvc_opts *to_f_uvc_opts(struct config_item *item); + +/* control/header/<NAME> */ +DECLARE_UVC_HEADER_DESCRIPTOR(1); + +struct uvcg_control_header { + struct config_item item; + struct UVC_HEADER_DESCRIPTOR(1) desc; + unsigned linked; +}; + +static struct uvcg_control_header *to_uvcg_control_header(struct config_item *item) +{ + return container_of(item, struct uvcg_control_header, item); +} + +CONFIGFS_ATTR_STRUCT(uvcg_control_header); +CONFIGFS_ATTR_OPS(uvcg_control_header); + +static struct configfs_item_operations uvcg_control_header_item_ops = { + .show_attribute = uvcg_control_header_attr_show, + .store_attribute = uvcg_control_header_attr_store, +}; + +#define UVCG_CTRL_HDR_ATTR(cname, aname, conv, str2u, uxx, vnoc, limit) \ +static ssize_t uvcg_control_header_##cname##_show( \ + struct uvcg_control_header *ch, char *page) \ +{ \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &ch->item.ci_group->cg_subsys->su_mutex;\ + int result; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = ch->item.ci_parent->ci_parent->ci_parent; \ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%d\n", conv(ch->desc.aname)); \ + mutex_unlock(&opts->lock); \ + \ + mutex_unlock(su_mutex); \ + return result; \ +} \ + \ +static ssize_t \ +uvcg_control_header_##cname##_store(struct uvcg_control_header *ch, \ + const char *page, size_t len) \ +{ \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &ch->item.ci_group->cg_subsys->su_mutex;\ + int ret; \ + uxx num; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = ch->item.ci_parent->ci_parent->ci_parent; \ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + if (ch->linked || opts->refcnt) { \ + ret = -EBUSY; \ + goto end; \ + } \ + \ + ret = str2u(page, 0, &num); \ + if (ret) \ + goto end; \ + \ + if (num > limit) { \ + ret = -EINVAL; \ + goto end; \ + } \ + ch->desc.aname = vnoc(num); \ + ret = len; \ +end: \ + mutex_unlock(&opts->lock); \ + mutex_unlock(su_mutex); \ + return ret; \ +} \ + \ +static struct uvcg_control_header_attribute \ + uvcg_control_header_##cname = \ + __CONFIGFS_ATTR(aname, S_IRUGO | S_IWUSR, \ + uvcg_control_header_##cname##_show, \ + uvcg_control_header_##cname##_store) + +UVCG_CTRL_HDR_ATTR(bcd_uvc, bcdUVC, le16_to_cpu, kstrtou16, u16, cpu_to_le16, + 0xffff); + +UVCG_CTRL_HDR_ATTR(dw_clock_frequency, dwClockFrequency, le32_to_cpu, kstrtou32, + u32, cpu_to_le32, 0x7fffffff); + +#undef UVCG_CTRL_HDR_ATTR + +static struct configfs_attribute *uvcg_control_header_attrs[] = { + &uvcg_control_header_bcd_uvc.attr, + &uvcg_control_header_dw_clock_frequency.attr, + NULL, +}; + +static struct config_item_type uvcg_control_header_type = { + .ct_item_ops = &uvcg_control_header_item_ops, + .ct_attrs = uvcg_control_header_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct config_item *uvcg_control_header_make(struct config_group *group, + const char *name) +{ + struct uvcg_control_header *h; + + h = kzalloc(sizeof(*h), GFP_KERNEL); + if (!h) + return ERR_PTR(-ENOMEM); + + h->desc.bLength = UVC_DT_HEADER_SIZE(1); + h->desc.bDescriptorType = USB_DT_CS_INTERFACE; + h->desc.bDescriptorSubType = UVC_VC_HEADER; + h->desc.bcdUVC = cpu_to_le16(0x0100); + h->desc.dwClockFrequency = cpu_to_le32(48000000); + + config_item_init_type_name(&h->item, name, &uvcg_control_header_type); + + return &h->item; +} + +static void uvcg_control_header_drop(struct config_group *group, + struct config_item *item) +{ + struct uvcg_control_header *h = to_uvcg_control_header(item); + + kfree(h); +} + +/* control/header */ +static struct uvcg_control_header_grp { + struct config_group group; +} uvcg_control_header_grp; + +static struct configfs_group_operations uvcg_control_header_grp_ops = { + .make_item = uvcg_control_header_make, + .drop_item = uvcg_control_header_drop, +}; + +static struct config_item_type uvcg_control_header_grp_type = { + .ct_group_ops = &uvcg_control_header_grp_ops, + .ct_owner = THIS_MODULE, +}; + +/* control/processing/default */ +static struct uvcg_default_processing { + struct config_group group; +} uvcg_default_processing; + +static inline struct uvcg_default_processing +*to_uvcg_default_processing(struct config_item *item) +{ + return container_of(to_config_group(item), + struct uvcg_default_processing, group); +} + +CONFIGFS_ATTR_STRUCT(uvcg_default_processing); +CONFIGFS_ATTR_OPS_RO(uvcg_default_processing); + +static struct configfs_item_operations uvcg_default_processing_item_ops = { + .show_attribute = uvcg_default_processing_attr_show, +}; + +#define UVCG_DEFAULT_PROCESSING_ATTR(cname, aname, conv) \ +static ssize_t uvcg_default_processing_##cname##_show( \ + struct uvcg_default_processing *dp, char *page) \ +{ \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &dp->group.cg_subsys->su_mutex; \ + struct uvc_processing_unit_descriptor *pd; \ + int result; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = dp->group.cg_item.ci_parent->ci_parent->ci_parent; \ + opts = to_f_uvc_opts(opts_item); \ + pd = &opts->uvc_processing; \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%d\n", conv(pd->aname)); \ + mutex_unlock(&opts->lock); \ + \ + mutex_unlock(su_mutex); \ + return result; \ +} \ + \ +static struct uvcg_default_processing_attribute \ + uvcg_default_processing_##cname = \ + __CONFIGFS_ATTR_RO(aname, uvcg_default_processing_##cname##_show) + +#define identity_conv(x) (x) + +UVCG_DEFAULT_PROCESSING_ATTR(b_unit_id, bUnitID, identity_conv); +UVCG_DEFAULT_PROCESSING_ATTR(b_source_id, bSourceID, identity_conv); +UVCG_DEFAULT_PROCESSING_ATTR(w_max_multiplier, wMaxMultiplier, le16_to_cpu); +UVCG_DEFAULT_PROCESSING_ATTR(i_processing, iProcessing, identity_conv); + +#undef identity_conv + +#undef UVCG_DEFAULT_PROCESSING_ATTR + +static ssize_t uvcg_default_processing_bm_controls_show( + struct uvcg_default_processing *dp, char *page) +{ + struct f_uvc_opts *opts; + struct config_item *opts_item; + struct mutex *su_mutex = &dp->group.cg_subsys->su_mutex; + struct uvc_processing_unit_descriptor *pd; + int result, i; + char *pg = page; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + opts_item = dp->group.cg_item.ci_parent->ci_parent->ci_parent; + opts = to_f_uvc_opts(opts_item); + pd = &opts->uvc_processing; + + mutex_lock(&opts->lock); + for (result = 0, i = 0; i < pd->bControlSize; ++i) { + result += sprintf(pg, "%d\n", pd->bmControls[i]); + pg = page + result; + } + mutex_unlock(&opts->lock); + + mutex_unlock(su_mutex); + + return result; +} + +static struct uvcg_default_processing_attribute + uvcg_default_processing_bm_controls = + __CONFIGFS_ATTR_RO(bmControls, + uvcg_default_processing_bm_controls_show); + +static struct configfs_attribute *uvcg_default_processing_attrs[] = { + &uvcg_default_processing_b_unit_id.attr, + &uvcg_default_processing_b_source_id.attr, + &uvcg_default_processing_w_max_multiplier.attr, + &uvcg_default_processing_bm_controls.attr, + &uvcg_default_processing_i_processing.attr, + NULL, +}; + +static struct config_item_type uvcg_default_processing_type = { + .ct_item_ops = &uvcg_default_processing_item_ops, + .ct_attrs = uvcg_default_processing_attrs, + .ct_owner = THIS_MODULE, +}; + +/* struct uvcg_processing {}; */ + +static struct config_group *uvcg_processing_default_groups[] = { + &uvcg_default_processing.group, + NULL, +}; + +/* control/processing */ +static struct uvcg_processing_grp { + struct config_group group; +} uvcg_processing_grp; + +static struct config_item_type uvcg_processing_grp_type = { + .ct_owner = THIS_MODULE, +}; + +/* control/terminal/camera/default */ +static struct uvcg_default_camera { + struct config_group group; +} uvcg_default_camera; + +static inline struct uvcg_default_camera +*to_uvcg_default_camera(struct config_item *item) +{ + return container_of(to_config_group(item), + struct uvcg_default_camera, group); +} + +CONFIGFS_ATTR_STRUCT(uvcg_default_camera); +CONFIGFS_ATTR_OPS_RO(uvcg_default_camera); + +static struct configfs_item_operations uvcg_default_camera_item_ops = { + .show_attribute = uvcg_default_camera_attr_show, +}; + +#define UVCG_DEFAULT_CAMERA_ATTR(cname, aname, conv) \ +static ssize_t uvcg_default_camera_##cname##_show( \ + struct uvcg_default_camera *dc, char *page) \ +{ \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &dc->group.cg_subsys->su_mutex; \ + struct uvc_camera_terminal_descriptor *cd; \ + int result; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = dc->group.cg_item.ci_parent->ci_parent->ci_parent-> \ + ci_parent; \ + opts = to_f_uvc_opts(opts_item); \ + cd = &opts->uvc_camera_terminal; \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%d\n", conv(cd->aname)); \ + mutex_unlock(&opts->lock); \ + \ + mutex_unlock(su_mutex); \ + \ + return result; \ +} \ + \ +static struct uvcg_default_camera_attribute \ + uvcg_default_camera_##cname = \ + __CONFIGFS_ATTR_RO(aname, uvcg_default_camera_##cname##_show) + +#define identity_conv(x) (x) + +UVCG_DEFAULT_CAMERA_ATTR(b_terminal_id, bTerminalID, identity_conv); +UVCG_DEFAULT_CAMERA_ATTR(w_terminal_type, wTerminalType, le16_to_cpu); +UVCG_DEFAULT_CAMERA_ATTR(b_assoc_terminal, bAssocTerminal, identity_conv); +UVCG_DEFAULT_CAMERA_ATTR(i_terminal, iTerminal, identity_conv); +UVCG_DEFAULT_CAMERA_ATTR(w_objective_focal_length_min, wObjectiveFocalLengthMin, + le16_to_cpu); +UVCG_DEFAULT_CAMERA_ATTR(w_objective_focal_length_max, wObjectiveFocalLengthMax, + le16_to_cpu); +UVCG_DEFAULT_CAMERA_ATTR(w_ocular_focal_length, wOcularFocalLength, + le16_to_cpu); + +#undef identity_conv + +#undef UVCG_DEFAULT_CAMERA_ATTR + +static ssize_t uvcg_default_camera_bm_controls_show( + struct uvcg_default_camera *dc, char *page) +{ + struct f_uvc_opts *opts; + struct config_item *opts_item; + struct mutex *su_mutex = &dc->group.cg_subsys->su_mutex; + struct uvc_camera_terminal_descriptor *cd; + int result, i; + char *pg = page; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + opts_item = dc->group.cg_item.ci_parent->ci_parent->ci_parent-> + ci_parent; + opts = to_f_uvc_opts(opts_item); + cd = &opts->uvc_camera_terminal; + + mutex_lock(&opts->lock); + for (result = 0, i = 0; i < cd->bControlSize; ++i) { + result += sprintf(pg, "%d\n", cd->bmControls[i]); + pg = page + result; + } + mutex_unlock(&opts->lock); + + mutex_unlock(su_mutex); + return result; +} + +static struct uvcg_default_camera_attribute + uvcg_default_camera_bm_controls = + __CONFIGFS_ATTR_RO(bmControls, uvcg_default_camera_bm_controls_show); + +static struct configfs_attribute *uvcg_default_camera_attrs[] = { + &uvcg_default_camera_b_terminal_id.attr, + &uvcg_default_camera_w_terminal_type.attr, + &uvcg_default_camera_b_assoc_terminal.attr, + &uvcg_default_camera_i_terminal.attr, + &uvcg_default_camera_w_objective_focal_length_min.attr, + &uvcg_default_camera_w_objective_focal_length_max.attr, + &uvcg_default_camera_w_ocular_focal_length.attr, + &uvcg_default_camera_bm_controls.attr, + NULL, +}; + +static struct config_item_type uvcg_default_camera_type = { + .ct_item_ops = &uvcg_default_camera_item_ops, + .ct_attrs = uvcg_default_camera_attrs, + .ct_owner = THIS_MODULE, +}; + +/* struct uvcg_camera {}; */ + +static struct config_group *uvcg_camera_default_groups[] = { + &uvcg_default_camera.group, + NULL, +}; + +/* control/terminal/camera */ +static struct uvcg_camera_grp { + struct config_group group; +} uvcg_camera_grp; + +static struct config_item_type uvcg_camera_grp_type = { + .ct_owner = THIS_MODULE, +}; + +/* control/terminal/output/default */ +static struct uvcg_default_output { + struct config_group group; +} uvcg_default_output; + +static inline struct uvcg_default_output +*to_uvcg_default_output(struct config_item *item) +{ + return container_of(to_config_group(item), + struct uvcg_default_output, group); +} + +CONFIGFS_ATTR_STRUCT(uvcg_default_output); +CONFIGFS_ATTR_OPS_RO(uvcg_default_output); + +static struct configfs_item_operations uvcg_default_output_item_ops = { + .show_attribute = uvcg_default_output_attr_show, +}; + +#define UVCG_DEFAULT_OUTPUT_ATTR(cname, aname, conv) \ +static ssize_t uvcg_default_output_##cname##_show( \ + struct uvcg_default_output *dout, char *page) \ +{ \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &dout->group.cg_subsys->su_mutex; \ + struct uvc_output_terminal_descriptor *cd; \ + int result; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = dout->group.cg_item.ci_parent->ci_parent-> \ + ci_parent->ci_parent; \ + opts = to_f_uvc_opts(opts_item); \ + cd = &opts->uvc_output_terminal; \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%d\n", conv(cd->aname)); \ + mutex_unlock(&opts->lock); \ + \ + mutex_unlock(su_mutex); \ + \ + return result; \ +} \ + \ +static struct uvcg_default_output_attribute \ + uvcg_default_output_##cname = \ + __CONFIGFS_ATTR_RO(aname, uvcg_default_output_##cname##_show) + +#define identity_conv(x) (x) + +UVCG_DEFAULT_OUTPUT_ATTR(b_terminal_id, bTerminalID, identity_conv); +UVCG_DEFAULT_OUTPUT_ATTR(w_terminal_type, wTerminalType, le16_to_cpu); +UVCG_DEFAULT_OUTPUT_ATTR(b_assoc_terminal, bAssocTerminal, identity_conv); +UVCG_DEFAULT_OUTPUT_ATTR(b_source_id, bSourceID, identity_conv); +UVCG_DEFAULT_OUTPUT_ATTR(i_terminal, iTerminal, identity_conv); + +#undef identity_conv + +#undef UVCG_DEFAULT_OUTPUT_ATTR + +static struct configfs_attribute *uvcg_default_output_attrs[] = { + &uvcg_default_output_b_terminal_id.attr, + &uvcg_default_output_w_terminal_type.attr, + &uvcg_default_output_b_assoc_terminal.attr, + &uvcg_default_output_b_source_id.attr, + &uvcg_default_output_i_terminal.attr, + NULL, +}; + +static struct config_item_type uvcg_default_output_type = { + .ct_item_ops = &uvcg_default_output_item_ops, + .ct_attrs = uvcg_default_output_attrs, + .ct_owner = THIS_MODULE, +}; + +/* struct uvcg_output {}; */ + +static struct config_group *uvcg_output_default_groups[] = { + &uvcg_default_output.group, + NULL, +}; + +/* control/terminal/output */ +static struct uvcg_output_grp { + struct config_group group; +} uvcg_output_grp; + +static struct config_item_type uvcg_output_grp_type = { + .ct_owner = THIS_MODULE, +}; + +static struct config_group *uvcg_terminal_default_groups[] = { + &uvcg_camera_grp.group, + &uvcg_output_grp.group, + NULL, +}; + +/* control/terminal */ +static struct uvcg_terminal_grp { + struct config_group group; +} uvcg_terminal_grp; + +static struct config_item_type uvcg_terminal_grp_type = { + .ct_owner = THIS_MODULE, +}; + +/* control/class/{fs} */ +static struct uvcg_control_class { + struct config_group group; +} uvcg_control_class_fs, uvcg_control_class_ss; + + +static inline struct uvc_descriptor_header +**uvcg_get_ctl_class_arr(struct config_item *i, struct f_uvc_opts *o) +{ + struct uvcg_control_class *cl = container_of(to_config_group(i), + struct uvcg_control_class, group); + + if (cl == &uvcg_control_class_fs) + return o->uvc_fs_control_cls; + + if (cl == &uvcg_control_class_ss) + return o->uvc_ss_control_cls; + + return NULL; +} + +static int uvcg_control_class_allow_link(struct config_item *src, + struct config_item *target) +{ + struct config_item *control, *header; + struct f_uvc_opts *opts; + struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; + struct uvc_descriptor_header **class_array; + struct uvcg_control_header *target_hdr; + int ret = -EINVAL; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + control = src->ci_parent->ci_parent; + header = config_group_find_item(to_config_group(control), "header"); + if (!header || target->ci_parent != header) + goto out; + + opts = to_f_uvc_opts(control->ci_parent); + + mutex_lock(&opts->lock); + + class_array = uvcg_get_ctl_class_arr(src, opts); + if (!class_array) + goto unlock; + if (opts->refcnt || class_array[0]) { + ret = -EBUSY; + goto unlock; + } + + target_hdr = to_uvcg_control_header(target); + ++target_hdr->linked; + class_array[0] = (struct uvc_descriptor_header *)&target_hdr->desc; + ret = 0; + +unlock: + mutex_unlock(&opts->lock); +out: + mutex_unlock(su_mutex); + return ret; +} + +static int uvcg_control_class_drop_link(struct config_item *src, + struct config_item *target) +{ + struct config_item *control, *header; + struct f_uvc_opts *opts; + struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; + struct uvc_descriptor_header **class_array; + struct uvcg_control_header *target_hdr; + int ret = -EINVAL; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + control = src->ci_parent->ci_parent; + header = config_group_find_item(to_config_group(control), "header"); + if (!header || target->ci_parent != header) + goto out; + + opts = to_f_uvc_opts(control->ci_parent); + + mutex_lock(&opts->lock); + + class_array = uvcg_get_ctl_class_arr(src, opts); + if (!class_array) + goto unlock; + if (opts->refcnt) { + ret = -EBUSY; + goto unlock; + } + + target_hdr = to_uvcg_control_header(target); + --target_hdr->linked; + class_array[0] = NULL; + ret = 0; + +unlock: + mutex_unlock(&opts->lock); +out: + mutex_unlock(su_mutex); + return ret; +} + +static struct configfs_item_operations uvcg_control_class_item_ops = { + .allow_link = uvcg_control_class_allow_link, + .drop_link = uvcg_control_class_drop_link, +}; + +static struct config_item_type uvcg_control_class_type = { + .ct_item_ops = &uvcg_control_class_item_ops, + .ct_owner = THIS_MODULE, +}; + +static struct config_group *uvcg_control_class_default_groups[] = { + &uvcg_control_class_fs.group, + &uvcg_control_class_ss.group, + NULL, +}; + +/* control/class */ +static struct uvcg_control_class_grp { + struct config_group group; +} uvcg_control_class_grp; + +static struct config_item_type uvcg_control_class_grp_type = { + .ct_owner = THIS_MODULE, +}; + +static struct config_group *uvcg_control_default_groups[] = { + &uvcg_control_header_grp.group, + &uvcg_processing_grp.group, + &uvcg_terminal_grp.group, + &uvcg_control_class_grp.group, + NULL, +}; + +/* control */ +static struct uvcg_control_grp { + struct config_group group; +} uvcg_control_grp; + +static struct config_item_type uvcg_control_grp_type = { + .ct_owner = THIS_MODULE, +}; + +/* streaming/uncompressed */ +static struct uvcg_uncompressed_grp { + struct config_group group; +} uvcg_uncompressed_grp; + +/* streaming/mjpeg */ +static struct uvcg_mjpeg_grp { + struct config_group group; +} uvcg_mjpeg_grp; + +static struct config_item *fmt_parent[] = { + &uvcg_uncompressed_grp.group.cg_item, + &uvcg_mjpeg_grp.group.cg_item, +}; + +enum uvcg_format_type { + UVCG_UNCOMPRESSED = 0, + UVCG_MJPEG, +}; + +struct uvcg_format { + struct config_group group; + enum uvcg_format_type type; + unsigned linked; + unsigned num_frames; + __u8 bmaControls[UVCG_STREAMING_CONTROL_SIZE]; +}; + +static struct uvcg_format *to_uvcg_format(struct config_item *item) +{ + return container_of(to_config_group(item), struct uvcg_format, group); +} + +static ssize_t uvcg_format_bma_controls_show(struct uvcg_format *f, char *page) +{ + struct f_uvc_opts *opts; + struct config_item *opts_item; + struct mutex *su_mutex = &f->group.cg_subsys->su_mutex; + int result, i; + char *pg = page; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + opts_item = f->group.cg_item.ci_parent->ci_parent->ci_parent; + opts = to_f_uvc_opts(opts_item); + + mutex_lock(&opts->lock); + result = sprintf(pg, "0x"); + pg += result; + for (i = 0; i < UVCG_STREAMING_CONTROL_SIZE; ++i) { + result += sprintf(pg, "%x\n", f->bmaControls[i]); + pg = page + result; + } + mutex_unlock(&opts->lock); + + mutex_unlock(su_mutex); + return result; +} + +static ssize_t uvcg_format_bma_controls_store(struct uvcg_format *ch, + const char *page, size_t len) +{ + struct f_uvc_opts *opts; + struct config_item *opts_item; + struct mutex *su_mutex = &ch->group.cg_subsys->su_mutex; + int ret = -EINVAL; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + opts_item = ch->group.cg_item.ci_parent->ci_parent->ci_parent; + opts = to_f_uvc_opts(opts_item); + + mutex_lock(&opts->lock); + if (ch->linked || opts->refcnt) { + ret = -EBUSY; + goto end; + } + + if (len < 4 || *page != '0' || + (*(page + 1) != 'x' && *(page + 1) != 'X')) + goto end; + ret = hex2bin(ch->bmaControls, page + 2, 1); + if (ret < 0) + goto end; + ret = len; +end: + mutex_unlock(&opts->lock); + mutex_unlock(su_mutex); + return ret; +} + +struct uvcg_format_ptr { + struct uvcg_format *fmt; + struct list_head entry; +}; + +/* streaming/header/<NAME> */ +struct uvcg_streaming_header { + struct config_item item; + struct uvc_input_header_descriptor desc; + unsigned linked; + struct list_head formats; + unsigned num_fmt; +}; + +static struct uvcg_streaming_header *to_uvcg_streaming_header(struct config_item *item) +{ + return container_of(item, struct uvcg_streaming_header, item); +} + +CONFIGFS_ATTR_STRUCT(uvcg_streaming_header); +CONFIGFS_ATTR_OPS(uvcg_streaming_header); + +static int uvcg_streaming_header_allow_link(struct config_item *src, + struct config_item *target) +{ + struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; + struct config_item *opts_item; + struct f_uvc_opts *opts; + struct uvcg_streaming_header *src_hdr; + struct uvcg_format *target_fmt = NULL; + struct uvcg_format_ptr *format_ptr; + int i, ret = -EINVAL; + + src_hdr = to_uvcg_streaming_header(src); + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + opts_item = src->ci_parent->ci_parent->ci_parent; + opts = to_f_uvc_opts(opts_item); + + mutex_lock(&opts->lock); + + if (src_hdr->linked) { + ret = -EBUSY; + goto out; + } + + for (i = 0; i < ARRAY_SIZE(fmt_parent); ++i) + if (target->ci_parent == fmt_parent[i]) + break; + if (i == ARRAY_SIZE(fmt_parent)) + goto out; + + target_fmt = container_of(to_config_group(target), struct uvcg_format, + group); + if (!target_fmt) + goto out; + + format_ptr = kzalloc(sizeof(*format_ptr), GFP_KERNEL); + if (!format_ptr) { + ret = -ENOMEM; + goto out; + } + ret = 0; + format_ptr->fmt = target_fmt; + list_add_tail(&format_ptr->entry, &src_hdr->formats); + ++src_hdr->num_fmt; + +out: + mutex_unlock(&opts->lock); + mutex_unlock(su_mutex); + return ret; +} + +static int uvcg_streaming_header_drop_link(struct config_item *src, + struct config_item *target) +{ + struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; + struct config_item *opts_item; + struct f_uvc_opts *opts; + struct uvcg_streaming_header *src_hdr; + struct uvcg_format *target_fmt = NULL; + struct uvcg_format_ptr *format_ptr, *tmp; + int ret = -EINVAL; + + src_hdr = to_uvcg_streaming_header(src); + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + opts_item = src->ci_parent->ci_parent->ci_parent; + opts = to_f_uvc_opts(opts_item); + + mutex_lock(&opts->lock); + target_fmt = container_of(to_config_group(target), struct uvcg_format, + group); + if (!target_fmt) + goto out; + + list_for_each_entry_safe(format_ptr, tmp, &src_hdr->formats, entry) + if (format_ptr->fmt == target_fmt) { + list_del(&format_ptr->entry); + kfree(format_ptr); + --src_hdr->num_fmt; + break; + } + +out: + mutex_unlock(&opts->lock); + mutex_unlock(su_mutex); + return ret; + +} + +static struct configfs_item_operations uvcg_streaming_header_item_ops = { + .show_attribute = uvcg_streaming_header_attr_show, + .store_attribute = uvcg_streaming_header_attr_store, + .allow_link = uvcg_streaming_header_allow_link, + .drop_link = uvcg_streaming_header_drop_link, +}; + +#define UVCG_STREAMING_HEADER_ATTR(cname, aname, conv) \ +static ssize_t uvcg_streaming_header_##cname##_show( \ + struct uvcg_streaming_header *sh, char *page) \ +{ \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &sh->item.ci_group->cg_subsys->su_mutex;\ + int result; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = sh->item.ci_parent->ci_parent->ci_parent; \ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%d\n", conv(sh->desc.aname)); \ + mutex_unlock(&opts->lock); \ + \ + mutex_unlock(su_mutex); \ + return result; \ +} \ + \ +static struct uvcg_streaming_header_attribute \ + uvcg_streaming_header_##cname = \ + __CONFIGFS_ATTR_RO(aname, uvcg_streaming_header_##cname##_show) + +#define identity_conv(x) (x) + +UVCG_STREAMING_HEADER_ATTR(bm_info, bmInfo, identity_conv); +UVCG_STREAMING_HEADER_ATTR(b_terminal_link, bTerminalLink, identity_conv); +UVCG_STREAMING_HEADER_ATTR(b_still_capture_method, bStillCaptureMethod, + identity_conv); +UVCG_STREAMING_HEADER_ATTR(b_trigger_support, bTriggerSupport, identity_conv); +UVCG_STREAMING_HEADER_ATTR(b_trigger_usage, bTriggerUsage, identity_conv); + +#undef identity_conv + +#undef UVCG_STREAMING_HEADER_ATTR + +static struct configfs_attribute *uvcg_streaming_header_attrs[] = { + &uvcg_streaming_header_bm_info.attr, + &uvcg_streaming_header_b_terminal_link.attr, + &uvcg_streaming_header_b_still_capture_method.attr, + &uvcg_streaming_header_b_trigger_support.attr, + &uvcg_streaming_header_b_trigger_usage.attr, + NULL, +}; + +static struct config_item_type uvcg_streaming_header_type = { + .ct_item_ops = &uvcg_streaming_header_item_ops, + .ct_attrs = uvcg_streaming_header_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct config_item +*uvcg_streaming_header_make(struct config_group *group, const char *name) +{ + struct uvcg_streaming_header *h; + + h = kzalloc(sizeof(*h), GFP_KERNEL); + if (!h) + return ERR_PTR(-ENOMEM); + + INIT_LIST_HEAD(&h->formats); + h->desc.bDescriptorType = USB_DT_CS_INTERFACE; + h->desc.bDescriptorSubType = UVC_VS_INPUT_HEADER; + h->desc.bTerminalLink = 3; + h->desc.bControlSize = UVCG_STREAMING_CONTROL_SIZE; + + config_item_init_type_name(&h->item, name, &uvcg_streaming_header_type); + + return &h->item; +} + +static void uvcg_streaming_header_drop(struct config_group *group, + struct config_item *item) +{ + struct uvcg_streaming_header *h = to_uvcg_streaming_header(item); + + kfree(h); +} + +/* streaming/header */ +static struct uvcg_streaming_header_grp { + struct config_group group; +} uvcg_streaming_header_grp; + +static struct configfs_group_operations uvcg_streaming_header_grp_ops = { + .make_item = uvcg_streaming_header_make, + .drop_item = uvcg_streaming_header_drop, +}; + +static struct config_item_type uvcg_streaming_header_grp_type = { + .ct_group_ops = &uvcg_streaming_header_grp_ops, + .ct_owner = THIS_MODULE, +}; + +/* streaming/<mode>/<format>/<NAME> */ +struct uvcg_frame { + struct { + u8 b_length; + u8 b_descriptor_type; + u8 b_descriptor_subtype; + u8 b_frame_index; + u8 bm_capabilities; + u16 w_width; + u16 w_height; + u32 dw_min_bit_rate; + u32 dw_max_bit_rate; + u32 dw_max_video_frame_buffer_size; + u32 dw_default_frame_interval; + u8 b_frame_interval_type; + } __attribute__((packed)) frame; + u32 *dw_frame_interval; + enum uvcg_format_type fmt_type; + struct config_item item; +}; + +static struct uvcg_frame *to_uvcg_frame(struct config_item *item) +{ + return container_of(item, struct uvcg_frame, item); +} + +CONFIGFS_ATTR_STRUCT(uvcg_frame); +CONFIGFS_ATTR_OPS(uvcg_frame); + +static struct configfs_item_operations uvcg_frame_item_ops = { + .show_attribute = uvcg_frame_attr_show, + .store_attribute = uvcg_frame_attr_store, +}; + +#define UVCG_FRAME_ATTR(cname, aname, to_cpu_endian, to_little_endian, bits) \ +static ssize_t uvcg_frame_##cname##_show(struct uvcg_frame *f, char *page)\ +{ \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &f->item.ci_group->cg_subsys->su_mutex;\ + int result; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = f->item.ci_parent->ci_parent->ci_parent->ci_parent; \ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%d\n", to_cpu_endian(f->frame.cname)); \ + mutex_unlock(&opts->lock); \ + \ + mutex_unlock(su_mutex); \ + return result; \ +} \ + \ +static ssize_t uvcg_frame_##cname##_store(struct uvcg_frame *f, \ + const char *page, size_t len)\ +{ \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct uvcg_format *fmt; \ + struct mutex *su_mutex = &f->item.ci_group->cg_subsys->su_mutex;\ + int ret; \ + u##bits num; \ + \ + ret = kstrtou##bits(page, 0, &num); \ + if (ret) \ + return ret; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = f->item.ci_parent->ci_parent->ci_parent->ci_parent; \ + opts = to_f_uvc_opts(opts_item); \ + fmt = to_uvcg_format(f->item.ci_parent); \ + \ + mutex_lock(&opts->lock); \ + if (fmt->linked || opts->refcnt) { \ + ret = -EBUSY; \ + goto end; \ + } \ + \ + f->frame.cname = to_little_endian(num); \ + ret = len; \ +end: \ + mutex_unlock(&opts->lock); \ + mutex_unlock(su_mutex); \ + return ret; \ +} \ + \ +static struct uvcg_frame_attribute \ + uvcg_frame_##cname = \ + __CONFIGFS_ATTR(aname, S_IRUGO | S_IWUSR, \ + uvcg_frame_##cname##_show, \ + uvcg_frame_##cname##_store) + +#define noop_conversion(x) (x) + +UVCG_FRAME_ATTR(bm_capabilities, bmCapabilities, noop_conversion, + noop_conversion, 8); +UVCG_FRAME_ATTR(w_width, wWidth, le16_to_cpu, cpu_to_le16, 16); +UVCG_FRAME_ATTR(w_height, wHeight, le16_to_cpu, cpu_to_le16, 16); +UVCG_FRAME_ATTR(dw_min_bit_rate, dwMinBitRate, le32_to_cpu, cpu_to_le32, 32); +UVCG_FRAME_ATTR(dw_max_bit_rate, dwMaxBitRate, le32_to_cpu, cpu_to_le32, 32); +UVCG_FRAME_ATTR(dw_max_video_frame_buffer_size, dwMaxVideoFrameBufferSize, + le32_to_cpu, cpu_to_le32, 32); +UVCG_FRAME_ATTR(dw_default_frame_interval, dwDefaultFrameInterval, + le32_to_cpu, cpu_to_le32, 32); + +#undef noop_conversion + +#undef UVCG_FRAME_ATTR + +static ssize_t uvcg_frame_dw_frame_interval_show(struct uvcg_frame *frm, + char *page) +{ + struct f_uvc_opts *opts; + struct config_item *opts_item; + struct mutex *su_mutex = &frm->item.ci_group->cg_subsys->su_mutex; + int result, i; + char *pg = page; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + opts_item = frm->item.ci_parent->ci_parent->ci_parent->ci_parent; + opts = to_f_uvc_opts(opts_item); + + mutex_lock(&opts->lock); + for (result = 0, i = 0; i < frm->frame.b_frame_interval_type; ++i) { + result += sprintf(pg, "%d\n", + le32_to_cpu(frm->dw_frame_interval[i])); + pg = page + result; + } + mutex_unlock(&opts->lock); + + mutex_unlock(su_mutex); + return result; +} + +static inline int __uvcg_count_frm_intrv(char *buf, void *priv) +{ + ++*((int *)priv); + return 0; +} + +static inline int __uvcg_fill_frm_intrv(char *buf, void *priv) +{ + u32 num, **interv; + int ret; + + ret = kstrtou32(buf, 0, &num); + if (ret) + return ret; + + interv = priv; + **interv = cpu_to_le32(num); + ++*interv; + + return 0; +} + +static int __uvcg_iter_frm_intrv(const char *page, size_t len, + int (*fun)(char *, void *), void *priv) +{ + /* sign, base 2 representation, newline, terminator */ + char buf[1 + sizeof(u32) * 8 + 1 + 1]; + const char *pg = page; + int i, ret; + + if (!fun) + return -EINVAL; + + while (pg - page < len) { + i = 0; + while (i < sizeof(buf) && (pg - page < len) && + *pg != '\0' && *pg != '\n') + buf[i++] = *pg++; + if (i == sizeof(buf)) + return -EINVAL; + while ((pg - page < len) && (*pg == '\0' || *pg == '\n')) + ++pg; + buf[i] = '\0'; + ret = fun(buf, priv); + if (ret) + return ret; + } + + return 0; +} + +static ssize_t uvcg_frame_dw_frame_interval_store(struct uvcg_frame *ch, + const char *page, size_t len) +{ + struct f_uvc_opts *opts; + struct config_item *opts_item; + struct uvcg_format *fmt; + struct mutex *su_mutex = &ch->item.ci_group->cg_subsys->su_mutex; + int ret = 0, n = 0; + u32 *frm_intrv, *tmp; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + opts_item = ch->item.ci_parent->ci_parent->ci_parent->ci_parent; + opts = to_f_uvc_opts(opts_item); + fmt = to_uvcg_format(ch->item.ci_parent); + + mutex_lock(&opts->lock); + if (fmt->linked || opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = __uvcg_iter_frm_intrv(page, len, __uvcg_count_frm_intrv, &n); + if (ret) + goto end; + + tmp = frm_intrv = kcalloc(n, sizeof(u32), GFP_KERNEL); + if (!frm_intrv) { + ret = -ENOMEM; + goto end; + } + + ret = __uvcg_iter_frm_intrv(page, len, __uvcg_fill_frm_intrv, &tmp); + if (ret) { + kfree(frm_intrv); + goto end; + } + + kfree(ch->dw_frame_interval); + ch->dw_frame_interval = frm_intrv; + ch->frame.b_frame_interval_type = n; + ret = len; + +end: + mutex_unlock(&opts->lock); + mutex_unlock(su_mutex); + return ret; +} + +static struct uvcg_frame_attribute + uvcg_frame_dw_frame_interval = + __CONFIGFS_ATTR(dwFrameInterval, S_IRUGO | S_IWUSR, + uvcg_frame_dw_frame_interval_show, + uvcg_frame_dw_frame_interval_store); + +static struct configfs_attribute *uvcg_frame_attrs[] = { + &uvcg_frame_bm_capabilities.attr, + &uvcg_frame_w_width.attr, + &uvcg_frame_w_height.attr, + &uvcg_frame_dw_min_bit_rate.attr, + &uvcg_frame_dw_max_bit_rate.attr, + &uvcg_frame_dw_max_video_frame_buffer_size.attr, + &uvcg_frame_dw_default_frame_interval.attr, + &uvcg_frame_dw_frame_interval.attr, + NULL, +}; + +static struct config_item_type uvcg_frame_type = { + .ct_item_ops = &uvcg_frame_item_ops, + .ct_attrs = uvcg_frame_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct config_item *uvcg_frame_make(struct config_group *group, + const char *name) +{ + struct uvcg_frame *h; + struct uvcg_format *fmt; + struct f_uvc_opts *opts; + struct config_item *opts_item; + + h = kzalloc(sizeof(*h), GFP_KERNEL); + if (!h) + return ERR_PTR(-ENOMEM); + + h->frame.b_descriptor_type = USB_DT_CS_INTERFACE; + h->frame.b_frame_index = 1; + h->frame.w_width = cpu_to_le16(640); + h->frame.w_height = cpu_to_le16(360); + h->frame.dw_min_bit_rate = cpu_to_le32(18432000); + h->frame.dw_max_bit_rate = cpu_to_le32(55296000); + h->frame.dw_max_video_frame_buffer_size = cpu_to_le32(460800); + h->frame.dw_default_frame_interval = cpu_to_le32(666666); + + opts_item = group->cg_item.ci_parent->ci_parent->ci_parent; + opts = to_f_uvc_opts(opts_item); + + mutex_lock(&opts->lock); + fmt = to_uvcg_format(&group->cg_item); + if (fmt->type == UVCG_UNCOMPRESSED) { + h->frame.b_descriptor_subtype = UVC_VS_FRAME_UNCOMPRESSED; + h->fmt_type = UVCG_UNCOMPRESSED; + } else if (fmt->type == UVCG_MJPEG) { + h->frame.b_descriptor_subtype = UVC_VS_FRAME_MJPEG; + h->fmt_type = UVCG_MJPEG; + } else { + mutex_unlock(&opts->lock); + kfree(h); + return ERR_PTR(-EINVAL); + } + ++fmt->num_frames; + mutex_unlock(&opts->lock); + + config_item_init_type_name(&h->item, name, &uvcg_frame_type); + + return &h->item; +} + +static void uvcg_frame_drop(struct config_group *group, struct config_item *item) +{ + struct uvcg_frame *h = to_uvcg_frame(item); + struct uvcg_format *fmt; + struct f_uvc_opts *opts; + struct config_item *opts_item; + + opts_item = group->cg_item.ci_parent->ci_parent->ci_parent; + opts = to_f_uvc_opts(opts_item); + + mutex_lock(&opts->lock); + fmt = to_uvcg_format(&group->cg_item); + --fmt->num_frames; + kfree(h); + mutex_unlock(&opts->lock); +} + +/* streaming/uncompressed/<NAME> */ +struct uvcg_uncompressed { + struct uvcg_format fmt; + struct uvc_format_uncompressed desc; +}; + +static struct uvcg_uncompressed *to_uvcg_uncompressed(struct config_item *item) +{ + return container_of( + container_of(to_config_group(item), struct uvcg_format, group), + struct uvcg_uncompressed, fmt); +} + +CONFIGFS_ATTR_STRUCT(uvcg_uncompressed); +CONFIGFS_ATTR_OPS(uvcg_uncompressed); + +static struct configfs_item_operations uvcg_uncompressed_item_ops = { + .show_attribute = uvcg_uncompressed_attr_show, + .store_attribute = uvcg_uncompressed_attr_store, +}; + +static struct configfs_group_operations uvcg_uncompressed_group_ops = { + .make_item = uvcg_frame_make, + .drop_item = uvcg_frame_drop, +}; + +static ssize_t uvcg_uncompressed_guid_format_show(struct uvcg_uncompressed *ch, + char *page) +{ + struct f_uvc_opts *opts; + struct config_item *opts_item; + struct mutex *su_mutex = &ch->fmt.group.cg_subsys->su_mutex; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + opts_item = ch->fmt.group.cg_item.ci_parent->ci_parent->ci_parent; + opts = to_f_uvc_opts(opts_item); + + mutex_lock(&opts->lock); + memcpy(page, ch->desc.guidFormat, sizeof(ch->desc.guidFormat)); + mutex_unlock(&opts->lock); + + mutex_unlock(su_mutex); + + return sizeof(ch->desc.guidFormat); +} + +static ssize_t uvcg_uncompressed_guid_format_store(struct uvcg_uncompressed *ch, + const char *page, size_t len) +{ + struct f_uvc_opts *opts; + struct config_item *opts_item; + struct mutex *su_mutex = &ch->fmt.group.cg_subsys->su_mutex; + int ret; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + opts_item = ch->fmt.group.cg_item.ci_parent->ci_parent->ci_parent; + opts = to_f_uvc_opts(opts_item); + + mutex_lock(&opts->lock); + if (ch->fmt.linked || opts->refcnt) { + ret = -EBUSY; + goto end; + } + + memcpy(ch->desc.guidFormat, page, + min(sizeof(ch->desc.guidFormat), len)); + ret = sizeof(ch->desc.guidFormat); + +end: + mutex_unlock(&opts->lock); + mutex_unlock(su_mutex); + return ret; +} + +static struct uvcg_uncompressed_attribute uvcg_uncompressed_guid_format = + __CONFIGFS_ATTR(guidFormat, S_IRUGO | S_IWUSR, + uvcg_uncompressed_guid_format_show, + uvcg_uncompressed_guid_format_store); + + +#define UVCG_UNCOMPRESSED_ATTR_RO(cname, aname, conv) \ +static ssize_t uvcg_uncompressed_##cname##_show( \ + struct uvcg_uncompressed *u, char *page) \ +{ \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ + int result; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%d\n", conv(u->desc.aname)); \ + mutex_unlock(&opts->lock); \ + \ + mutex_unlock(su_mutex); \ + return result; \ +} \ + \ +static struct uvcg_uncompressed_attribute \ + uvcg_uncompressed_##cname = \ + __CONFIGFS_ATTR_RO(aname, uvcg_uncompressed_##cname##_show) + +#define UVCG_UNCOMPRESSED_ATTR(cname, aname, conv) \ +static ssize_t uvcg_uncompressed_##cname##_show( \ + struct uvcg_uncompressed *u, char *page) \ +{ \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ + int result; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%d\n", conv(u->desc.aname)); \ + mutex_unlock(&opts->lock); \ + \ + mutex_unlock(su_mutex); \ + return result; \ +} \ + \ +static ssize_t \ +uvcg_uncompressed_##cname##_store(struct uvcg_uncompressed *u, \ + const char *page, size_t len) \ +{ \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ + int ret; \ + u8 num; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + if (u->fmt.linked || opts->refcnt) { \ + ret = -EBUSY; \ + goto end; \ + } \ + \ + ret = kstrtou8(page, 0, &num); \ + if (ret) \ + goto end; \ + \ + if (num > 255) { \ + ret = -EINVAL; \ + goto end; \ + } \ + u->desc.aname = num; \ + ret = len; \ +end: \ + mutex_unlock(&opts->lock); \ + mutex_unlock(su_mutex); \ + return ret; \ +} \ + \ +static struct uvcg_uncompressed_attribute \ + uvcg_uncompressed_##cname = \ + __CONFIGFS_ATTR(aname, S_IRUGO | S_IWUSR, \ + uvcg_uncompressed_##cname##_show, \ + uvcg_uncompressed_##cname##_store) + +#define identity_conv(x) (x) + +UVCG_UNCOMPRESSED_ATTR(b_bits_per_pixel, bBitsPerPixel, identity_conv); +UVCG_UNCOMPRESSED_ATTR(b_default_frame_index, bDefaultFrameIndex, + identity_conv); +UVCG_UNCOMPRESSED_ATTR_RO(b_aspect_ratio_x, bAspectRatioX, identity_conv); +UVCG_UNCOMPRESSED_ATTR_RO(b_aspect_ratio_y, bAspectRatioY, identity_conv); +UVCG_UNCOMPRESSED_ATTR_RO(bm_interface_flags, bmInterfaceFlags, identity_conv); + +#undef identity_conv + +#undef UVCG_UNCOMPRESSED_ATTR +#undef UVCG_UNCOMPRESSED_ATTR_RO + +static inline ssize_t +uvcg_uncompressed_bma_controls_show(struct uvcg_uncompressed *unc, char *page) +{ + return uvcg_format_bma_controls_show(&unc->fmt, page); +} + +static inline ssize_t +uvcg_uncompressed_bma_controls_store(struct uvcg_uncompressed *ch, + const char *page, size_t len) +{ + return uvcg_format_bma_controls_store(&ch->fmt, page, len); +} + +static struct uvcg_uncompressed_attribute uvcg_uncompressed_bma_controls = + __CONFIGFS_ATTR(bmaControls, S_IRUGO | S_IWUSR, + uvcg_uncompressed_bma_controls_show, + uvcg_uncompressed_bma_controls_store); + +static struct configfs_attribute *uvcg_uncompressed_attrs[] = { + &uvcg_uncompressed_guid_format.attr, + &uvcg_uncompressed_b_bits_per_pixel.attr, + &uvcg_uncompressed_b_default_frame_index.attr, + &uvcg_uncompressed_b_aspect_ratio_x.attr, + &uvcg_uncompressed_b_aspect_ratio_y.attr, + &uvcg_uncompressed_bm_interface_flags.attr, + &uvcg_uncompressed_bma_controls.attr, + NULL, +}; + +static struct config_item_type uvcg_uncompressed_type = { + .ct_item_ops = &uvcg_uncompressed_item_ops, + .ct_group_ops = &uvcg_uncompressed_group_ops, + .ct_attrs = uvcg_uncompressed_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct config_group *uvcg_uncompressed_make(struct config_group *group, + const char *name) +{ + static char guid[] = { + 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 + }; + struct uvcg_uncompressed *h; + + h = kzalloc(sizeof(*h), GFP_KERNEL); + if (!h) + return ERR_PTR(-ENOMEM); + + h->desc.bLength = UVC_DT_FORMAT_UNCOMPRESSED_SIZE; + h->desc.bDescriptorType = USB_DT_CS_INTERFACE; + h->desc.bDescriptorSubType = UVC_VS_FORMAT_UNCOMPRESSED; + memcpy(h->desc.guidFormat, guid, sizeof(guid)); + h->desc.bBitsPerPixel = 16; + h->desc.bDefaultFrameIndex = 1; + h->desc.bAspectRatioX = 0; + h->desc.bAspectRatioY = 0; + h->desc.bmInterfaceFlags = 0; + h->desc.bCopyProtect = 0; + + h->fmt.type = UVCG_UNCOMPRESSED; + config_group_init_type_name(&h->fmt.group, name, + &uvcg_uncompressed_type); + + return &h->fmt.group; +} + +static void uvcg_uncompressed_drop(struct config_group *group, + struct config_item *item) +{ + struct uvcg_uncompressed *h = to_uvcg_uncompressed(item); + + kfree(h); +} + +static struct configfs_group_operations uvcg_uncompressed_grp_ops = { + .make_group = uvcg_uncompressed_make, + .drop_item = uvcg_uncompressed_drop, +}; + +static struct config_item_type uvcg_uncompressed_grp_type = { + .ct_group_ops = &uvcg_uncompressed_grp_ops, + .ct_owner = THIS_MODULE, +}; + +/* streaming/mjpeg/<NAME> */ +struct uvcg_mjpeg { + struct uvcg_format fmt; + struct uvc_format_mjpeg desc; +}; + +static struct uvcg_mjpeg *to_uvcg_mjpeg(struct config_item *item) +{ + return container_of( + container_of(to_config_group(item), struct uvcg_format, group), + struct uvcg_mjpeg, fmt); +} + +CONFIGFS_ATTR_STRUCT(uvcg_mjpeg); +CONFIGFS_ATTR_OPS(uvcg_mjpeg); + +static struct configfs_item_operations uvcg_mjpeg_item_ops = { + .show_attribute = uvcg_mjpeg_attr_show, + .store_attribute = uvcg_mjpeg_attr_store, +}; + +static struct configfs_group_operations uvcg_mjpeg_group_ops = { + .make_item = uvcg_frame_make, + .drop_item = uvcg_frame_drop, +}; + +#define UVCG_MJPEG_ATTR_RO(cname, aname, conv) \ +static ssize_t uvcg_mjpeg_##cname##_show(struct uvcg_mjpeg *u, char *page)\ +{ \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ + int result; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%d\n", conv(u->desc.aname)); \ + mutex_unlock(&opts->lock); \ + \ + mutex_unlock(su_mutex); \ + return result; \ +} \ + \ +static struct uvcg_mjpeg_attribute \ + uvcg_mjpeg_##cname = \ + __CONFIGFS_ATTR_RO(aname, uvcg_mjpeg_##cname##_show) + +#define UVCG_MJPEG_ATTR(cname, aname, conv) \ +static ssize_t uvcg_mjpeg_##cname##_show(struct uvcg_mjpeg *u, char *page)\ +{ \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ + int result; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%d\n", conv(u->desc.aname)); \ + mutex_unlock(&opts->lock); \ + \ + mutex_unlock(su_mutex); \ + return result; \ +} \ + \ +static ssize_t \ +uvcg_mjpeg_##cname##_store(struct uvcg_mjpeg *u, \ + const char *page, size_t len) \ +{ \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ + int ret; \ + u8 num; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + if (u->fmt.linked || opts->refcnt) { \ + ret = -EBUSY; \ + goto end; \ + } \ + \ + ret = kstrtou8(page, 0, &num); \ + if (ret) \ + goto end; \ + \ + if (num > 255) { \ + ret = -EINVAL; \ + goto end; \ + } \ + u->desc.aname = num; \ + ret = len; \ +end: \ + mutex_unlock(&opts->lock); \ + mutex_unlock(su_mutex); \ + return ret; \ +} \ + \ +static struct uvcg_mjpeg_attribute \ + uvcg_mjpeg_##cname = \ + __CONFIGFS_ATTR(aname, S_IRUGO | S_IWUSR, \ + uvcg_mjpeg_##cname##_show, \ + uvcg_mjpeg_##cname##_store) + +#define identity_conv(x) (x) + +UVCG_MJPEG_ATTR(b_default_frame_index, bDefaultFrameIndex, + identity_conv); +UVCG_MJPEG_ATTR_RO(bm_flags, bmFlags, identity_conv); +UVCG_MJPEG_ATTR_RO(b_aspect_ratio_x, bAspectRatioX, identity_conv); +UVCG_MJPEG_ATTR_RO(b_aspect_ratio_y, bAspectRatioY, identity_conv); +UVCG_MJPEG_ATTR_RO(bm_interface_flags, bmInterfaceFlags, identity_conv); + +#undef identity_conv + +#undef UVCG_MJPEG_ATTR +#undef UVCG_MJPEG_ATTR_RO + +static inline ssize_t +uvcg_mjpeg_bma_controls_show(struct uvcg_mjpeg *unc, char *page) +{ + return uvcg_format_bma_controls_show(&unc->fmt, page); +} + +static inline ssize_t +uvcg_mjpeg_bma_controls_store(struct uvcg_mjpeg *ch, + const char *page, size_t len) +{ + return uvcg_format_bma_controls_store(&ch->fmt, page, len); +} + +static struct uvcg_mjpeg_attribute uvcg_mjpeg_bma_controls = + __CONFIGFS_ATTR(bmaControls, S_IRUGO | S_IWUSR, + uvcg_mjpeg_bma_controls_show, + uvcg_mjpeg_bma_controls_store); + +static struct configfs_attribute *uvcg_mjpeg_attrs[] = { + &uvcg_mjpeg_b_default_frame_index.attr, + &uvcg_mjpeg_bm_flags.attr, + &uvcg_mjpeg_b_aspect_ratio_x.attr, + &uvcg_mjpeg_b_aspect_ratio_y.attr, + &uvcg_mjpeg_bm_interface_flags.attr, + &uvcg_mjpeg_bma_controls.attr, + NULL, +}; + +static struct config_item_type uvcg_mjpeg_type = { + .ct_item_ops = &uvcg_mjpeg_item_ops, + .ct_group_ops = &uvcg_mjpeg_group_ops, + .ct_attrs = uvcg_mjpeg_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct config_group *uvcg_mjpeg_make(struct config_group *group, + const char *name) +{ + struct uvcg_mjpeg *h; + + h = kzalloc(sizeof(*h), GFP_KERNEL); + if (!h) + return ERR_PTR(-ENOMEM); + + h->desc.bLength = UVC_DT_FORMAT_MJPEG_SIZE; + h->desc.bDescriptorType = USB_DT_CS_INTERFACE; + h->desc.bDescriptorSubType = UVC_VS_FORMAT_MJPEG; + h->desc.bDefaultFrameIndex = 1; + h->desc.bAspectRatioX = 0; + h->desc.bAspectRatioY = 0; + h->desc.bmInterfaceFlags = 0; + h->desc.bCopyProtect = 0; + + h->fmt.type = UVCG_MJPEG; + config_group_init_type_name(&h->fmt.group, name, + &uvcg_mjpeg_type); + + return &h->fmt.group; +} + +static void uvcg_mjpeg_drop(struct config_group *group, + struct config_item *item) +{ + struct uvcg_mjpeg *h = to_uvcg_mjpeg(item); + + kfree(h); +} + +static struct configfs_group_operations uvcg_mjpeg_grp_ops = { + .make_group = uvcg_mjpeg_make, + .drop_item = uvcg_mjpeg_drop, +}; + +static struct config_item_type uvcg_mjpeg_grp_type = { + .ct_group_ops = &uvcg_mjpeg_grp_ops, + .ct_owner = THIS_MODULE, +}; + +/* streaming/color_matching/default */ +static struct uvcg_default_color_matching { + struct config_group group; +} uvcg_default_color_matching; + +static inline struct uvcg_default_color_matching +*to_uvcg_default_color_matching(struct config_item *item) +{ + return container_of(to_config_group(item), + struct uvcg_default_color_matching, group); +} + +CONFIGFS_ATTR_STRUCT(uvcg_default_color_matching); +CONFIGFS_ATTR_OPS_RO(uvcg_default_color_matching); + +static struct configfs_item_operations uvcg_default_color_matching_item_ops = { + .show_attribute = uvcg_default_color_matching_attr_show, +}; + +#define UVCG_DEFAULT_COLOR_MATCHING_ATTR(cname, aname, conv) \ +static ssize_t uvcg_default_color_matching_##cname##_show( \ + struct uvcg_default_color_matching *dc, char *page) \ +{ \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &dc->group.cg_subsys->su_mutex; \ + struct uvc_color_matching_descriptor *cd; \ + int result; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = dc->group.cg_item.ci_parent->ci_parent->ci_parent; \ + opts = to_f_uvc_opts(opts_item); \ + cd = &opts->uvc_color_matching; \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%d\n", conv(cd->aname)); \ + mutex_unlock(&opts->lock); \ + \ + mutex_unlock(su_mutex); \ + return result; \ +} \ + \ +static struct uvcg_default_color_matching_attribute \ + uvcg_default_color_matching_##cname = \ + __CONFIGFS_ATTR_RO(aname, uvcg_default_color_matching_##cname##_show) + +#define identity_conv(x) (x) + +UVCG_DEFAULT_COLOR_MATCHING_ATTR(b_color_primaries, bColorPrimaries, + identity_conv); +UVCG_DEFAULT_COLOR_MATCHING_ATTR(b_transfer_characteristics, + bTransferCharacteristics, identity_conv); +UVCG_DEFAULT_COLOR_MATCHING_ATTR(b_matrix_coefficients, bMatrixCoefficients, + identity_conv); + +#undef identity_conv + +#undef UVCG_DEFAULT_COLOR_MATCHING_ATTR + +static struct configfs_attribute *uvcg_default_color_matching_attrs[] = { + &uvcg_default_color_matching_b_color_primaries.attr, + &uvcg_default_color_matching_b_transfer_characteristics.attr, + &uvcg_default_color_matching_b_matrix_coefficients.attr, + NULL, +}; + +static struct config_item_type uvcg_default_color_matching_type = { + .ct_item_ops = &uvcg_default_color_matching_item_ops, + .ct_attrs = uvcg_default_color_matching_attrs, + .ct_owner = THIS_MODULE, +}; + +/* struct uvcg_color_matching {}; */ + +static struct config_group *uvcg_color_matching_default_groups[] = { + &uvcg_default_color_matching.group, + NULL, +}; + +/* streaming/color_matching */ +static struct uvcg_color_matching_grp { + struct config_group group; +} uvcg_color_matching_grp; + +static struct config_item_type uvcg_color_matching_grp_type = { + .ct_owner = THIS_MODULE, +}; + +/* streaming/class/{fs|hs|ss} */ +static struct uvcg_streaming_class { + struct config_group group; +} uvcg_streaming_class_fs, uvcg_streaming_class_hs, uvcg_streaming_class_ss; + + +static inline struct uvc_descriptor_header +***__uvcg_get_stream_class_arr(struct config_item *i, struct f_uvc_opts *o) +{ + struct uvcg_streaming_class *cl = container_of(to_config_group(i), + struct uvcg_streaming_class, group); + + if (cl == &uvcg_streaming_class_fs) + return &o->uvc_fs_streaming_cls; + + if (cl == &uvcg_streaming_class_hs) + return &o->uvc_hs_streaming_cls; + + if (cl == &uvcg_streaming_class_ss) + return &o->uvc_ss_streaming_cls; + + return NULL; +} + +enum uvcg_strm_type { + UVCG_HEADER = 0, + UVCG_FORMAT, + UVCG_FRAME +}; + +/* + * Iterate over a hierarchy of streaming descriptors' config items. + * The items are created by the user with configfs. + * + * It "processes" the header pointed to by @priv1, then for each format + * that follows the header "processes" the format itself and then for + * each frame inside a format "processes" the frame. + * + * As a "processing" function the @fun is used. + * + * __uvcg_iter_strm_cls() is used in two context: first, to calculate + * the amount of memory needed for an array of streaming descriptors + * and second, to actually fill the array. + * + * @h: streaming header pointer + * @priv2: an "inout" parameter (the caller might want to see the changes to it) + * @priv3: an "inout" parameter (the caller might want to see the changes to it) + * @fun: callback function for processing each level of the hierarchy + */ +static int __uvcg_iter_strm_cls(struct uvcg_streaming_header *h, + void *priv2, void *priv3, + int (*fun)(void *, void *, void *, int, enum uvcg_strm_type type)) +{ + struct uvcg_format_ptr *f; + struct config_group *grp; + struct config_item *item; + struct uvcg_frame *frm; + int ret, i, j; + + if (!fun) + return -EINVAL; + + i = j = 0; + ret = fun(h, priv2, priv3, 0, UVCG_HEADER); + if (ret) + return ret; + list_for_each_entry(f, &h->formats, entry) { + ret = fun(f->fmt, priv2, priv3, i++, UVCG_FORMAT); + if (ret) + return ret; + grp = &f->fmt->group; + list_for_each_entry(item, &grp->cg_children, ci_entry) { + frm = to_uvcg_frame(item); + ret = fun(frm, priv2, priv3, j++, UVCG_FRAME); + if (ret) + return ret; + } + } + + return ret; +} + +/* + * Count how many bytes are needed for an array of streaming descriptors. + * + * @priv1: pointer to a header, format or frame + * @priv2: inout parameter, accumulated size of the array + * @priv3: inout parameter, accumulated number of the array elements + * @n: unused, this function's prototype must match @fun in __uvcg_iter_strm_cls + */ +static int __uvcg_cnt_strm(void *priv1, void *priv2, void *priv3, int n, + enum uvcg_strm_type type) +{ + size_t *size = priv2; + size_t *count = priv3; + + switch (type) { + case UVCG_HEADER: { + struct uvcg_streaming_header *h = priv1; + + *size += sizeof(h->desc); + /* bmaControls */ + *size += h->num_fmt * UVCG_STREAMING_CONTROL_SIZE; + } + break; + case UVCG_FORMAT: { + struct uvcg_format *fmt = priv1; + + if (fmt->type == UVCG_UNCOMPRESSED) { + struct uvcg_uncompressed *u = + container_of(fmt, struct uvcg_uncompressed, + fmt); + + *size += sizeof(u->desc); + } else if (fmt->type == UVCG_MJPEG) { + struct uvcg_mjpeg *m = + container_of(fmt, struct uvcg_mjpeg, fmt); + + *size += sizeof(m->desc); + } else { + return -EINVAL; + } + } + break; + case UVCG_FRAME: { + struct uvcg_frame *frm = priv1; + int sz = sizeof(frm->dw_frame_interval); + + *size += sizeof(frm->frame); + *size += frm->frame.b_frame_interval_type * sz; + } + break; + } + + ++*count; + + return 0; +} + +/* + * Fill an array of streaming descriptors. + * + * @priv1: pointer to a header, format or frame + * @priv2: inout parameter, pointer into a block of memory + * @priv3: inout parameter, pointer to a 2-dimensional array + */ +static int __uvcg_fill_strm(void *priv1, void *priv2, void *priv3, int n, + enum uvcg_strm_type type) +{ + void **dest = priv2; + struct uvc_descriptor_header ***array = priv3; + size_t sz; + + **array = *dest; + ++*array; + + switch (type) { + case UVCG_HEADER: { + struct uvc_input_header_descriptor *ihdr = *dest; + struct uvcg_streaming_header *h = priv1; + struct uvcg_format_ptr *f; + + memcpy(*dest, &h->desc, sizeof(h->desc)); + *dest += sizeof(h->desc); + sz = UVCG_STREAMING_CONTROL_SIZE; + list_for_each_entry(f, &h->formats, entry) { + memcpy(*dest, f->fmt->bmaControls, sz); + *dest += sz; + } + ihdr->bLength = sizeof(h->desc) + h->num_fmt * sz; + ihdr->bNumFormats = h->num_fmt; + } + break; + case UVCG_FORMAT: { + struct uvcg_format *fmt = priv1; + + if (fmt->type == UVCG_UNCOMPRESSED) { + struct uvc_format_uncompressed *unc = *dest; + struct uvcg_uncompressed *u = + container_of(fmt, struct uvcg_uncompressed, + fmt); + + memcpy(*dest, &u->desc, sizeof(u->desc)); + *dest += sizeof(u->desc); + unc->bNumFrameDescriptors = fmt->num_frames; + unc->bFormatIndex = n + 1; + } else if (fmt->type == UVCG_MJPEG) { + struct uvc_format_mjpeg *mjp = *dest; + struct uvcg_mjpeg *m = + container_of(fmt, struct uvcg_mjpeg, fmt); + + memcpy(*dest, &m->desc, sizeof(m->desc)); + *dest += sizeof(m->desc); + mjp->bNumFrameDescriptors = fmt->num_frames; + mjp->bFormatIndex = n + 1; + } else { + return -EINVAL; + } + } + break; + case UVCG_FRAME: { + struct uvcg_frame *frm = priv1; + struct uvc_descriptor_header *h = *dest; + + sz = sizeof(frm->frame); + memcpy(*dest, &frm->frame, sz); + *dest += sz; + sz = frm->frame.b_frame_interval_type * + sizeof(*frm->dw_frame_interval); + memcpy(*dest, frm->dw_frame_interval, sz); + *dest += sz; + if (frm->fmt_type == UVCG_UNCOMPRESSED) + h->bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE( + frm->frame.b_frame_interval_type); + else if (frm->fmt_type == UVCG_MJPEG) + h->bLength = UVC_DT_FRAME_MJPEG_SIZE( + frm->frame.b_frame_interval_type); + } + break; + } + + return 0; +} + +static int uvcg_streaming_class_allow_link(struct config_item *src, + struct config_item *target) +{ + struct config_item *streaming, *header; + struct f_uvc_opts *opts; + struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; + struct uvc_descriptor_header ***class_array, **cl_arr; + struct uvcg_streaming_header *target_hdr; + void *data, *data_save; + size_t size = 0, count = 0; + int ret = -EINVAL; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + streaming = src->ci_parent->ci_parent; + header = config_group_find_item(to_config_group(streaming), "header"); + if (!header || target->ci_parent != header) + goto out; + + opts = to_f_uvc_opts(streaming->ci_parent); + + mutex_lock(&opts->lock); + + class_array = __uvcg_get_stream_class_arr(src, opts); + if (!class_array || *class_array || opts->refcnt) { + ret = -EBUSY; + goto unlock; + } + + target_hdr = to_uvcg_streaming_header(target); + ret = __uvcg_iter_strm_cls(target_hdr, &size, &count, __uvcg_cnt_strm); + if (ret) + goto unlock; + + count += 2; /* color_matching, NULL */ + *class_array = kcalloc(count, sizeof(void *), GFP_KERNEL); + if (!*class_array) { + ret = -ENOMEM; + goto unlock; + } + + data = data_save = kzalloc(size, GFP_KERNEL); + if (!data) { + kfree(*class_array); + *class_array = NULL; + ret = PTR_ERR(data); + goto unlock; + } + cl_arr = *class_array; + ret = __uvcg_iter_strm_cls(target_hdr, &data, &cl_arr, + __uvcg_fill_strm); + if (ret) { + kfree(*class_array); + *class_array = NULL; + /* + * __uvcg_fill_strm() called from __uvcg_iter_stream_cls() + * might have advanced the "data", so use a backup copy + */ + kfree(data_save); + goto unlock; + } + *cl_arr = (struct uvc_descriptor_header *)&opts->uvc_color_matching; + + ++target_hdr->linked; + ret = 0; + +unlock: + mutex_unlock(&opts->lock); +out: + mutex_unlock(su_mutex); + return ret; +} + +static int uvcg_streaming_class_drop_link(struct config_item *src, + struct config_item *target) +{ + struct config_item *streaming, *header; + struct f_uvc_opts *opts; + struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; + struct uvc_descriptor_header ***class_array; + struct uvcg_streaming_header *target_hdr; + int ret = -EINVAL; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + streaming = src->ci_parent->ci_parent; + header = config_group_find_item(to_config_group(streaming), "header"); + if (!header || target->ci_parent != header) + goto out; + + opts = to_f_uvc_opts(streaming->ci_parent); + + mutex_lock(&opts->lock); + + class_array = __uvcg_get_stream_class_arr(src, opts); + if (!class_array || !*class_array) + goto unlock; + + if (opts->refcnt) { + ret = -EBUSY; + goto unlock; + } + + target_hdr = to_uvcg_streaming_header(target); + --target_hdr->linked; + kfree(**class_array); + kfree(*class_array); + *class_array = NULL; + ret = 0; + +unlock: + mutex_unlock(&opts->lock); +out: + mutex_unlock(su_mutex); + return ret; +} + +static struct configfs_item_operations uvcg_streaming_class_item_ops = { + .allow_link = uvcg_streaming_class_allow_link, + .drop_link = uvcg_streaming_class_drop_link, +}; + +static struct config_item_type uvcg_streaming_class_type = { + .ct_item_ops = &uvcg_streaming_class_item_ops, + .ct_owner = THIS_MODULE, +}; + +static struct config_group *uvcg_streaming_class_default_groups[] = { + &uvcg_streaming_class_fs.group, + &uvcg_streaming_class_hs.group, + &uvcg_streaming_class_ss.group, + NULL, +}; + +/* streaming/class */ +static struct uvcg_streaming_class_grp { + struct config_group group; +} uvcg_streaming_class_grp; + +static struct config_item_type uvcg_streaming_class_grp_type = { + .ct_owner = THIS_MODULE, +}; + +static struct config_group *uvcg_streaming_default_groups[] = { + &uvcg_streaming_header_grp.group, + &uvcg_uncompressed_grp.group, + &uvcg_mjpeg_grp.group, + &uvcg_color_matching_grp.group, + &uvcg_streaming_class_grp.group, + NULL, +}; + +/* streaming */ +static struct uvcg_streaming_grp { + struct config_group group; +} uvcg_streaming_grp; + +static struct config_item_type uvcg_streaming_grp_type = { + .ct_owner = THIS_MODULE, +}; + +static struct config_group *uvcg_default_groups[] = { + &uvcg_control_grp.group, + &uvcg_streaming_grp.group, + NULL, +}; + +static inline struct f_uvc_opts *to_f_uvc_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_uvc_opts, + func_inst.group); +} + +CONFIGFS_ATTR_STRUCT(f_uvc_opts); +CONFIGFS_ATTR_OPS(f_uvc_opts); + +static void uvc_attr_release(struct config_item *item) +{ + struct f_uvc_opts *opts = to_f_uvc_opts(item); + + usb_put_function_instance(&opts->func_inst); +} + +static struct configfs_item_operations uvc_item_ops = { + .release = uvc_attr_release, + .show_attribute = f_uvc_opts_attr_show, + .store_attribute = f_uvc_opts_attr_store, +}; + +#define UVCG_OPTS_ATTR(cname, conv, str2u, uxx, vnoc, limit) \ +static ssize_t f_uvc_opts_##cname##_show( \ + struct f_uvc_opts *opts, char *page) \ +{ \ + int result; \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%d\n", conv(opts->cname)); \ + mutex_unlock(&opts->lock); \ + \ + return result; \ +} \ + \ +static ssize_t \ +f_uvc_opts_##cname##_store(struct f_uvc_opts *opts, \ + const char *page, size_t len) \ +{ \ + int ret; \ + uxx num; \ + \ + mutex_lock(&opts->lock); \ + if (opts->refcnt) { \ + ret = -EBUSY; \ + goto end; \ + } \ + \ + ret = str2u(page, 0, &num); \ + if (ret) \ + goto end; \ + \ + if (num > limit) { \ + ret = -EINVAL; \ + goto end; \ + } \ + opts->cname = vnoc(num); \ + ret = len; \ +end: \ + mutex_unlock(&opts->lock); \ + return ret; \ +} \ + \ +static struct f_uvc_opts_attribute \ + f_uvc_opts_attribute_##cname = \ + __CONFIGFS_ATTR(cname, S_IRUGO | S_IWUSR, \ + f_uvc_opts_##cname##_show, \ + f_uvc_opts_##cname##_store) + +#define identity_conv(x) (x) + +UVCG_OPTS_ATTR(streaming_interval, identity_conv, kstrtou8, u8, identity_conv, + 16); +UVCG_OPTS_ATTR(streaming_maxpacket, le16_to_cpu, kstrtou16, u16, le16_to_cpu, + 3072); +UVCG_OPTS_ATTR(streaming_maxburst, identity_conv, kstrtou8, u8, identity_conv, + 15); + +#undef identity_conv + +#undef UVCG_OPTS_ATTR + +static struct configfs_attribute *uvc_attrs[] = { + &f_uvc_opts_attribute_streaming_interval.attr, + &f_uvc_opts_attribute_streaming_maxpacket.attr, + &f_uvc_opts_attribute_streaming_maxburst.attr, + NULL, +}; + +static struct config_item_type uvc_func_type = { + .ct_item_ops = &uvc_item_ops, + .ct_attrs = uvc_attrs, + .ct_owner = THIS_MODULE, +}; + +static inline void uvcg_init_group(struct config_group *g, + struct config_group **default_groups, + const char *name, + struct config_item_type *type) +{ + g->default_groups = default_groups; + config_group_init_type_name(g, name, type); +} + +int uvcg_attach_configfs(struct f_uvc_opts *opts) +{ + config_group_init_type_name(&uvcg_control_header_grp.group, + "header", + &uvcg_control_header_grp_type); + config_group_init_type_name(&uvcg_default_processing.group, + "default", + &uvcg_default_processing_type); + uvcg_init_group(&uvcg_processing_grp.group, + uvcg_processing_default_groups, + "processing", + &uvcg_processing_grp_type); + config_group_init_type_name(&uvcg_default_camera.group, + "default", + &uvcg_default_camera_type); + uvcg_init_group(&uvcg_camera_grp.group, + uvcg_camera_default_groups, + "camera", + &uvcg_camera_grp_type); + config_group_init_type_name(&uvcg_default_output.group, + "default", + &uvcg_default_output_type); + uvcg_init_group(&uvcg_output_grp.group, + uvcg_output_default_groups, + "output", + &uvcg_output_grp_type); + uvcg_init_group(&uvcg_terminal_grp.group, + uvcg_terminal_default_groups, + "terminal", + &uvcg_terminal_grp_type); + config_group_init_type_name(&uvcg_control_class_fs.group, + "fs", + &uvcg_control_class_type); + config_group_init_type_name(&uvcg_control_class_ss.group, + "ss", + &uvcg_control_class_type); + uvcg_init_group(&uvcg_control_class_grp.group, + uvcg_control_class_default_groups, + "class", + &uvcg_control_class_grp_type); + uvcg_init_group(&uvcg_control_grp.group, + uvcg_control_default_groups, + "control", + &uvcg_control_grp_type); + config_group_init_type_name(&uvcg_streaming_header_grp.group, + "header", + &uvcg_streaming_header_grp_type); + config_group_init_type_name(&uvcg_uncompressed_grp.group, + "uncompressed", + &uvcg_uncompressed_grp_type); + config_group_init_type_name(&uvcg_mjpeg_grp.group, + "mjpeg", + &uvcg_mjpeg_grp_type); + config_group_init_type_name(&uvcg_default_color_matching.group, + "default", + &uvcg_default_color_matching_type); + uvcg_init_group(&uvcg_color_matching_grp.group, + uvcg_color_matching_default_groups, + "color_matching", + &uvcg_color_matching_grp_type); + config_group_init_type_name(&uvcg_streaming_class_fs.group, + "fs", + &uvcg_streaming_class_type); + config_group_init_type_name(&uvcg_streaming_class_hs.group, + "hs", + &uvcg_streaming_class_type); + config_group_init_type_name(&uvcg_streaming_class_ss.group, + "ss", + &uvcg_streaming_class_type); + uvcg_init_group(&uvcg_streaming_class_grp.group, + uvcg_streaming_class_default_groups, + "class", + &uvcg_streaming_class_grp_type); + uvcg_init_group(&uvcg_streaming_grp.group, + uvcg_streaming_default_groups, + "streaming", + &uvcg_streaming_grp_type); + uvcg_init_group(&opts->func_inst.group, + uvcg_default_groups, + "", + &uvc_func_type); + return 0; +} diff --git a/drivers/usb/gadget/function/uvc_configfs.h b/drivers/usb/gadget/function/uvc_configfs.h new file mode 100644 index 000000000000..085e67be7c71 --- /dev/null +++ b/drivers/usb/gadget/function/uvc_configfs.h @@ -0,0 +1,22 @@ +/* + * uvc_configfs.h + * + * Configfs support for the uvc function. + * + * Copyright (c) 2014 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef UVC_CONFIGFS_H +#define UVC_CONFIGFS_H + +struct f_uvc_opts; + +int uvcg_attach_configfs(struct f_uvc_opts *opts); + +#endif /* UVC_CONFIGFS_H */ diff --git a/drivers/usb/gadget/udc/at91_udc.c b/drivers/usb/gadget/udc/at91_udc.c index c862656d18b8..c0ec5f71f16f 100644 --- a/drivers/usb/gadget/udc/at91_udc.c +++ b/drivers/usb/gadget/udc/at91_udc.c @@ -176,7 +176,7 @@ static int proc_udc_show(struct seq_file *s, void *unused) udc->enabled ? (udc->vbus ? "active" : "enabled") : "disabled", - udc->selfpowered ? "self" : "VBUS", + udc->gadget.is_selfpowered ? "self" : "VBUS", udc->suspended ? ", suspended" : "", udc->driver ? udc->driver->driver.name : "(none)"); @@ -1000,7 +1000,7 @@ static int at91_set_selfpowered(struct usb_gadget *gadget, int is_on) unsigned long flags; spin_lock_irqsave(&udc->lock, flags); - udc->selfpowered = (is_on != 0); + gadget->is_selfpowered = (is_on != 0); spin_unlock_irqrestore(&udc->lock, flags); return 0; } @@ -1149,7 +1149,7 @@ static void handle_setup(struct at91_udc *udc, struct at91_ep *ep, u32 csr) */ case ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE) << 8) | USB_REQ_GET_STATUS: - tmp = (udc->selfpowered << USB_DEVICE_SELF_POWERED); + tmp = (udc->gadget.is_selfpowered << USB_DEVICE_SELF_POWERED); if (at91_udp_read(udc, AT91_UDP_GLB_STAT) & AT91_UDP_ESR) tmp |= (1 << USB_DEVICE_REMOTE_WAKEUP); PACKET("get device status\n"); @@ -1653,7 +1653,7 @@ static int at91_start(struct usb_gadget *gadget, udc->driver = driver; udc->gadget.dev.of_node = udc->pdev->dev.of_node; udc->enabled = 1; - udc->selfpowered = 1; + udc->gadget.is_selfpowered = 1; return 0; } diff --git a/drivers/usb/gadget/udc/at91_udc.h b/drivers/usb/gadget/udc/at91_udc.h index 017524663381..467dcfb74a51 100644 --- a/drivers/usb/gadget/udc/at91_udc.h +++ b/drivers/usb/gadget/udc/at91_udc.h @@ -122,7 +122,6 @@ struct at91_udc { unsigned req_pending:1; unsigned wait_for_addr_ack:1; unsigned wait_for_config_ack:1; - unsigned selfpowered:1; unsigned active_suspend:1; u8 addr; struct at91_udc_data board; diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index 9f93bed42052..c0410862c2a1 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -8,6 +8,7 @@ * published by the Free Software Foundation. */ #include <linux/clk.h> +#include <linux/clk/at91_pmc.h> #include <linux/module.h> #include <linux/init.h> #include <linux/interrupt.h> @@ -315,6 +316,17 @@ static inline void usba_cleanup_debugfs(struct usba_udc *udc) } #endif +static inline u32 usba_int_enb_get(struct usba_udc *udc) +{ + return udc->int_enb_cache; +} + +static inline void usba_int_enb_set(struct usba_udc *udc, u32 val) +{ + usba_writel(udc, INT_ENB, val); + udc->int_enb_cache = val; +} + static int vbus_is_present(struct usba_udc *udc) { if (gpio_is_valid(udc->vbus_pin)) @@ -324,27 +336,22 @@ static int vbus_is_present(struct usba_udc *udc) return 1; } -#if defined(CONFIG_ARCH_AT91SAM9RL) - -#include <linux/clk/at91_pmc.h> - -static void toggle_bias(int is_on) +static void toggle_bias(struct usba_udc *udc, int is_on) { - unsigned int uckr = at91_pmc_read(AT91_CKGR_UCKR); - - if (is_on) - at91_pmc_write(AT91_CKGR_UCKR, uckr | AT91_PMC_BIASEN); - else - at91_pmc_write(AT91_CKGR_UCKR, uckr & ~(AT91_PMC_BIASEN)); + if (udc->errata && udc->errata->toggle_bias) + udc->errata->toggle_bias(udc, is_on); } -#else - -static void toggle_bias(int is_on) +static void generate_bias_pulse(struct usba_udc *udc) { -} + if (!udc->bias_pulse_needed) + return; + + if (udc->errata && udc->errata->pulse_bias) + udc->errata->pulse_bias(udc); -#endif /* CONFIG_ARCH_AT91SAM9RL */ + udc->bias_pulse_needed = false; +} static void next_fifo_transaction(struct usba_ep *ep, struct usba_request *req) { @@ -601,16 +608,14 @@ usba_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) if (ep->can_dma) { u32 ctrl; - usba_writel(udc, INT_ENB, - (usba_readl(udc, INT_ENB) - | USBA_BF(EPT_INT, 1 << ep->index) - | USBA_BF(DMA_INT, 1 << ep->index))); + usba_int_enb_set(udc, usba_int_enb_get(udc) | + USBA_BF(EPT_INT, 1 << ep->index) | + USBA_BF(DMA_INT, 1 << ep->index)); ctrl = USBA_AUTO_VALID | USBA_INTDIS_DMA; usba_ep_writel(ep, CTL_ENB, ctrl); } else { - usba_writel(udc, INT_ENB, - (usba_readl(udc, INT_ENB) - | USBA_BF(EPT_INT, 1 << ep->index))); + usba_int_enb_set(udc, usba_int_enb_get(udc) | + USBA_BF(EPT_INT, 1 << ep->index)); } spin_unlock_irqrestore(&udc->lock, flags); @@ -618,7 +623,7 @@ usba_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) DBG(DBG_HW, "EPT_CFG%d after init: %#08lx\n", ep->index, (unsigned long)usba_ep_readl(ep, CFG)); DBG(DBG_HW, "INT_ENB after init: %#08lx\n", - (unsigned long)usba_readl(udc, INT_ENB)); + (unsigned long)usba_int_enb_get(udc)); return 0; } @@ -654,9 +659,8 @@ static int usba_ep_disable(struct usb_ep *_ep) usba_dma_readl(ep, STATUS); } usba_ep_writel(ep, CTL_DIS, USBA_EPT_ENABLE); - usba_writel(udc, INT_ENB, - usba_readl(udc, INT_ENB) - & ~USBA_BF(EPT_INT, 1 << ep->index)); + usba_int_enb_set(udc, usba_int_enb_get(udc) & + ~USBA_BF(EPT_INT, 1 << ep->index)); request_complete_list(ep, &req_list, -ESHUTDOWN); @@ -985,6 +989,7 @@ usba_udc_set_selfpowered(struct usb_gadget *gadget, int is_selfpowered) struct usba_udc *udc = to_usba_udc(gadget); unsigned long flags; + gadget->is_selfpowered = (is_selfpowered != 0); spin_lock_irqsave(&udc->lock, flags); if (is_selfpowered) udc->devstatus |= 1 << USB_DEVICE_SELF_POWERED; @@ -1619,18 +1624,21 @@ static void usba_dma_irq(struct usba_udc *udc, struct usba_ep *ep) static irqreturn_t usba_udc_irq(int irq, void *devid) { struct usba_udc *udc = devid; - u32 status; + u32 status, int_enb; u32 dma_status; u32 ep_status; spin_lock(&udc->lock); - status = usba_readl(udc, INT_STA); + int_enb = usba_int_enb_get(udc); + status = usba_readl(udc, INT_STA) & int_enb; DBG(DBG_INT, "irq, status=%#08x\n", status); if (status & USBA_DET_SUSPEND) { - toggle_bias(0); + toggle_bias(udc, 0); usba_writel(udc, INT_CLR, USBA_DET_SUSPEND); + usba_int_enb_set(udc, int_enb | USBA_WAKE_UP); + udc->bias_pulse_needed = true; DBG(DBG_BUS, "Suspend detected\n"); if (udc->gadget.speed != USB_SPEED_UNKNOWN && udc->driver && udc->driver->suspend) { @@ -1641,13 +1649,15 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) } if (status & USBA_WAKE_UP) { - toggle_bias(1); + toggle_bias(udc, 1); usba_writel(udc, INT_CLR, USBA_WAKE_UP); + usba_int_enb_set(udc, int_enb & ~USBA_WAKE_UP); DBG(DBG_BUS, "Wake Up CPU detected\n"); } if (status & USBA_END_OF_RESUME) { usba_writel(udc, INT_CLR, USBA_END_OF_RESUME); + generate_bias_pulse(udc); DBG(DBG_BUS, "Resume detected\n"); if (udc->gadget.speed != USB_SPEED_UNKNOWN && udc->driver && udc->driver->resume) { @@ -1683,6 +1693,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) struct usba_ep *ep0; usba_writel(udc, INT_CLR, USBA_END_OF_RESET); + generate_bias_pulse(udc); reset_all_endpoints(udc); if (udc->gadget.speed != USB_SPEED_UNKNOWN && udc->driver) { @@ -1708,11 +1719,8 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) | USBA_BF(BK_NUMBER, USBA_BK_NUMBER_ONE))); usba_ep_writel(ep0, CTL_ENB, USBA_EPT_ENABLE | USBA_RX_SETUP); - usba_writel(udc, INT_ENB, - (usba_readl(udc, INT_ENB) - | USBA_BF(EPT_INT, 1) - | USBA_DET_SUSPEND - | USBA_END_OF_RESUME)); + usba_int_enb_set(udc, int_enb | USBA_BF(EPT_INT, 1) | + USBA_DET_SUSPEND | USBA_END_OF_RESUME); /* * Unclear why we hit this irregularly, e.g. in usbtest, @@ -1745,13 +1753,13 @@ static irqreturn_t usba_vbus_irq(int irq, void *devid) vbus = vbus_is_present(udc); if (vbus != udc->vbus_prev) { if (vbus) { - toggle_bias(1); + toggle_bias(udc, 1); usba_writel(udc, CTRL, USBA_ENABLE_MASK); - usba_writel(udc, INT_ENB, USBA_END_OF_RESET); + usba_int_enb_set(udc, USBA_END_OF_RESET); } else { udc->gadget.speed = USB_SPEED_UNKNOWN; reset_all_endpoints(udc); - toggle_bias(0); + toggle_bias(udc, 0); usba_writel(udc, CTRL, USBA_DISABLE_MASK); if (udc->driver->disconnect) { spin_unlock(&udc->lock); @@ -1797,9 +1805,9 @@ static int atmel_usba_start(struct usb_gadget *gadget, /* If Vbus is present, enable the controller and wait for reset */ spin_lock_irqsave(&udc->lock, flags); if (vbus_is_present(udc) && udc->vbus_prev == 0) { - toggle_bias(1); + toggle_bias(udc, 1); usba_writel(udc, CTRL, USBA_ENABLE_MASK); - usba_writel(udc, INT_ENB, USBA_END_OF_RESET); + usba_int_enb_set(udc, USBA_END_OF_RESET); } spin_unlock_irqrestore(&udc->lock, flags); @@ -1820,7 +1828,7 @@ static int atmel_usba_stop(struct usb_gadget *gadget) spin_unlock_irqrestore(&udc->lock, flags); /* This will also disable the DP pullup */ - toggle_bias(0); + toggle_bias(udc, 0); usba_writel(udc, CTRL, USBA_DISABLE_MASK); clk_disable_unprepare(udc->hclk); @@ -1832,6 +1840,41 @@ static int atmel_usba_stop(struct usb_gadget *gadget) } #ifdef CONFIG_OF +static void at91sam9rl_toggle_bias(struct usba_udc *udc, int is_on) +{ + unsigned int uckr = at91_pmc_read(AT91_CKGR_UCKR); + + if (is_on) + at91_pmc_write(AT91_CKGR_UCKR, uckr | AT91_PMC_BIASEN); + else + at91_pmc_write(AT91_CKGR_UCKR, uckr & ~(AT91_PMC_BIASEN)); +} + +static void at91sam9g45_pulse_bias(struct usba_udc *udc) +{ + unsigned int uckr = at91_pmc_read(AT91_CKGR_UCKR); + + at91_pmc_write(AT91_CKGR_UCKR, uckr & ~(AT91_PMC_BIASEN)); + at91_pmc_write(AT91_CKGR_UCKR, uckr | AT91_PMC_BIASEN); +} + +static const struct usba_udc_errata at91sam9rl_errata = { + .toggle_bias = at91sam9rl_toggle_bias, +}; + +static const struct usba_udc_errata at91sam9g45_errata = { + .pulse_bias = at91sam9g45_pulse_bias, +}; + +static const struct of_device_id atmel_udc_dt_ids[] = { + { .compatible = "atmel,at91sam9rl-udc", .data = &at91sam9rl_errata }, + { .compatible = "atmel,at91sam9g45-udc", .data = &at91sam9g45_errata }, + { .compatible = "atmel,sama5d3-udc" }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, atmel_udc_dt_ids); + static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, struct usba_udc *udc) { @@ -1839,10 +1882,17 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, const char *name; enum of_gpio_flags flags; struct device_node *np = pdev->dev.of_node; + const struct of_device_id *match; struct device_node *pp; int i, ret; struct usba_ep *eps, *ep; + match = of_match_node(atmel_udc_dt_ids, np); + if (!match) + return ERR_PTR(-EINVAL); + + udc->errata = match->data; + udc->num_ep = 0; udc->vbus_pin = of_get_named_gpio_flags(np, "atmel,vbus-gpio", 0, @@ -2033,7 +2083,7 @@ static int usba_udc_probe(struct platform_device *pdev) dev_err(&pdev->dev, "Unable to enable pclk, aborting.\n"); return ret; } - toggle_bias(0); + usba_writel(udc, CTRL, USBA_DISABLE_MASK); clk_disable_unprepare(pclk); @@ -2042,6 +2092,8 @@ static int usba_udc_probe(struct platform_device *pdev) else udc->usba_ep = usba_udc_pdata(pdev, udc); + toggle_bias(udc, 0); + if (IS_ERR(udc->usba_ep)) return PTR_ERR(udc->usba_ep); @@ -2101,15 +2153,6 @@ static int __exit usba_udc_remove(struct platform_device *pdev) return 0; } -#if defined(CONFIG_OF) -static const struct of_device_id atmel_udc_dt_ids[] = { - { .compatible = "atmel,at91sam9rl-udc" }, - { /* sentinel */ } -}; - -MODULE_DEVICE_TABLE(of, atmel_udc_dt_ids); -#endif - static struct platform_driver udc_driver = { .remove = __exit_p(usba_udc_remove), .driver = { diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.h b/drivers/usb/gadget/udc/atmel_usba_udc.h index a70706e8cb02..497cd18836f3 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.h +++ b/drivers/usb/gadget/udc/atmel_usba_udc.h @@ -304,6 +304,11 @@ struct usba_request { unsigned int mapped:1; }; +struct usba_udc_errata { + void (*toggle_bias)(struct usba_udc *udc, int is_on); + void (*pulse_bias)(struct usba_udc *udc); +}; + struct usba_udc { /* Protect hw registers from concurrent modifications */ spinlock_t lock; @@ -314,6 +319,7 @@ struct usba_udc { struct usb_gadget gadget; struct usb_gadget_driver *driver; struct platform_device *pdev; + const struct usba_udc_errata *errata; int irq; int vbus_pin; int vbus_pin_inverted; @@ -321,12 +327,15 @@ struct usba_udc { struct clk *pclk; struct clk *hclk; struct usba_ep *usba_ep; + bool bias_pulse_needed; u16 devstatus; u16 test_mode; int vbus_prev; + u32 int_enb_cache; + #ifdef CONFIG_USB_GADGET_DEBUG_FS struct dentry *debugfs_root; struct dentry *debugfs_regs; diff --git a/drivers/usb/gadget/udc/bdc/bdc_ep.c b/drivers/usb/gadget/udc/bdc/bdc_ep.c index d4fe8d769bd6..b04980cf6dc4 100644 --- a/drivers/usb/gadget/udc/bdc/bdc_ep.c +++ b/drivers/usb/gadget/udc/bdc/bdc_ep.c @@ -718,7 +718,7 @@ static int ep_queue(struct bdc_ep *ep, struct bdc_req *req) struct bdc *bdc; int ret = 0; - if (!req || !ep || !ep->usb_ep.desc) + if (!req || !ep->usb_ep.desc) return -EINVAL; bdc = ep->bdc; @@ -882,8 +882,8 @@ static int ep_set_halt(struct bdc_ep *ep, u32 value) ret = bdc_ep_set_stall(bdc, ep->ep_num); if (ret) - dev_err(bdc->dev, "failed to %s STALL on %s\n", - value ? "set" : "clear", ep->name); + dev_err(bdc->dev, "failed to set STALL on %s\n", + ep->name); else ep->flags |= BDC_EP_STALL; } else { @@ -891,8 +891,8 @@ static int ep_set_halt(struct bdc_ep *ep, u32 value) dev_dbg(bdc->dev, "Before Clear\n"); ret = bdc_ep_clear_stall(bdc, ep->ep_num); if (ret) - dev_err(bdc->dev, "failed to %s STALL on %s\n", - value ? "set" : "clear", ep->name); + dev_err(bdc->dev, "failed to clear STALL on %s\n", + ep->name); else ep->flags &= ~BDC_EP_STALL; dev_dbg(bdc->dev, "After Clear\n"); diff --git a/drivers/usb/gadget/udc/bdc/bdc_udc.c b/drivers/usb/gadget/udc/bdc/bdc_udc.c index 3700ce70b0be..7f77db5d1278 100644 --- a/drivers/usb/gadget/udc/bdc/bdc_udc.c +++ b/drivers/usb/gadget/udc/bdc/bdc_udc.c @@ -454,6 +454,7 @@ static int bdc_udc_set_selfpowered(struct usb_gadget *gadget, unsigned long flags; dev_dbg(bdc->dev, "%s()\n", __func__); + gadget->is_selfpowered = (is_self != 0); spin_lock_irqsave(&bdc->lock, flags); if (!is_self) bdc->devstatus |= 1 << USB_DEVICE_SELF_POWERED; diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index 270c1ec650fa..8dda48445f6f 100644 --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -802,6 +802,7 @@ static int dummy_set_selfpowered(struct usb_gadget *_gadget, int value) { struct dummy *dum; + _gadget->is_selfpowered = (value != 0); dum = gadget_to_dummy_hcd(_gadget)->dum; if (value) dum->devstatus |= (1 << USB_DEVICE_SELF_POWERED); diff --git a/drivers/usb/gadget/udc/fsl_qe_udc.c b/drivers/usb/gadget/udc/fsl_qe_udc.c index 795c99c77697..e0822f1b6639 100644 --- a/drivers/usb/gadget/udc/fsl_qe_udc.c +++ b/drivers/usb/gadget/udc/fsl_qe_udc.c @@ -2630,7 +2630,7 @@ static int qe_udc_remove(struct platform_device *ofdev) struct qe_udc *udc = platform_get_drvdata(ofdev); struct qe_ep *ep; unsigned int size; - DECLARE_COMPLETION(done); + DECLARE_COMPLETION_ONSTACK(done); usb_del_gadget_udc(&udc->gadget); diff --git a/drivers/usb/gadget/udc/fsl_udc_core.c b/drivers/usb/gadget/udc/fsl_udc_core.c index 2df807403f22..55fcb930f92e 100644 --- a/drivers/usb/gadget/udc/fsl_udc_core.c +++ b/drivers/usb/gadget/udc/fsl_udc_core.c @@ -1337,7 +1337,7 @@ static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value, if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) { /* Get device status */ - tmp = 1 << USB_DEVICE_SELF_POWERED; + tmp = udc->gadget.is_selfpowered; tmp |= udc->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP; } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) { /* Get interface status */ @@ -1948,6 +1948,7 @@ static int fsl_udc_start(struct usb_gadget *g, /* hook up the driver */ udc_controller->driver = driver; spin_unlock_irqrestore(&udc_controller->lock, flags); + g->is_selfpowered = 1; if (!IS_ERR_OR_NULL(udc_controller->transceiver)) { /* Suspend the controller until OTG enable it */ @@ -2529,7 +2530,7 @@ static int __exit fsl_udc_remove(struct platform_device *pdev) struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); - DECLARE_COMPLETION(done); + DECLARE_COMPLETION_ONSTACK(done); if (!udc_controller) return -ENODEV; diff --git a/drivers/usb/gadget/udc/lpc32xx_udc.c b/drivers/usb/gadget/udc/lpc32xx_udc.c index 34d9b7b831b3..27fd41333f71 100644 --- a/drivers/usb/gadget/udc/lpc32xx_udc.c +++ b/drivers/usb/gadget/udc/lpc32xx_udc.c @@ -191,7 +191,6 @@ struct lpc32xx_udc { bool enabled; bool clocked; bool suspended; - bool selfpowered; int ep0state; atomic_t enabled_ep_cnt; wait_queue_head_t ep_disable_wait_queue; @@ -547,7 +546,7 @@ static int proc_udc_show(struct seq_file *s, void *unused) udc->vbus ? "present" : "off", udc->enabled ? (udc->vbus ? "active" : "enabled") : "disabled", - udc->selfpowered ? "self" : "VBUS", + udc->gadget.is_selfpowered ? "self" : "VBUS", udc->suspended ? ", suspended" : "", udc->driver ? udc->driver->driver.name : "(none)"); @@ -2212,7 +2211,7 @@ static int udc_get_status(struct lpc32xx_udc *udc, u16 reqtype, u16 wIndex) break; /* Not supported */ case USB_RECIP_DEVICE: - ep0buff = (udc->selfpowered << USB_DEVICE_SELF_POWERED); + ep0buff = udc->gadget.is_selfpowered; if (udc->dev_status & (1 << USB_DEVICE_REMOTE_WAKEUP)) ep0buff |= (1 << USB_DEVICE_REMOTE_WAKEUP); break; @@ -2498,10 +2497,7 @@ static int lpc32xx_wakeup(struct usb_gadget *gadget) static int lpc32xx_set_selfpowered(struct usb_gadget *gadget, int is_on) { - struct lpc32xx_udc *udc = to_udc(gadget); - - /* Always self-powered */ - udc->selfpowered = (is_on != 0); + gadget->is_selfpowered = (is_on != 0); return 0; } @@ -2946,7 +2942,7 @@ static int lpc32xx_start(struct usb_gadget *gadget, udc->driver = driver; udc->gadget.dev.of_node = udc->dev->of_node; udc->enabled = 1; - udc->selfpowered = 1; + udc->gadget.is_selfpowered = 1; udc->vbus = 0; /* Force VBUS process once to check for cable insertion */ diff --git a/drivers/usb/gadget/udc/mv_udc_core.c b/drivers/usb/gadget/udc/mv_udc_core.c index 253f3df8326a..d32160d6463f 100644 --- a/drivers/usb/gadget/udc/mv_udc_core.c +++ b/drivers/usb/gadget/udc/mv_udc_core.c @@ -1378,9 +1378,6 @@ static int mv_udc_start(struct usb_gadget *gadget, } } - /* pullup is always on */ - mv_udc_pullup(&udc->gadget, 1); - /* When boot with cable attached, there will be no vbus irq occurred */ if (udc->qwork) queue_work(udc->qwork, &udc->vbus_work); diff --git a/drivers/usb/gadget/udc/net2272.c b/drivers/usb/gadget/udc/net2272.c index d20de1fab08e..195baf3e1fcd 100644 --- a/drivers/usb/gadget/udc/net2272.c +++ b/drivers/usb/gadget/udc/net2272.c @@ -1132,13 +1132,10 @@ net2272_wakeup(struct usb_gadget *_gadget) static int net2272_set_selfpowered(struct usb_gadget *_gadget, int value) { - struct net2272 *dev; - if (!_gadget) return -ENODEV; - dev = container_of(_gadget, struct net2272, gadget); - dev->is_selfpowered = value; + _gadget->is_selfpowered = (value != 0); return 0; } @@ -1844,7 +1841,7 @@ net2272_handle_stat0_irqs(struct net2272 *dev, u8 stat) case USB_RECIP_DEVICE: if (u.r.wLength > 2) goto do_stall; - if (dev->is_selfpowered) + if (dev->gadget.is_selfpowered) status = (1 << USB_DEVICE_SELF_POWERED); /* don't bother with a request object! */ diff --git a/drivers/usb/gadget/udc/net2272.h b/drivers/usb/gadget/udc/net2272.h index e59505789359..127ab03fcde3 100644 --- a/drivers/usb/gadget/udc/net2272.h +++ b/drivers/usb/gadget/udc/net2272.h @@ -458,7 +458,6 @@ struct net2272 { struct usb_gadget_driver *driver; unsigned protocol_stall:1, softconnect:1, - is_selfpowered:1, wakeup:1, dma_eot_polarity:1, dma_dack_polarity:1, diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c index d6411e0a8e03..d2c0bf65e345 100644 --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -12,11 +12,7 @@ * the Mass Storage, Serial, and Ethernet/RNDIS gadget drivers * as well as Gadget Zero and Gadgetfs. * - * DMA is enabled by default. Drivers using transfer queues might use - * DMA chaining to remove IRQ latencies between transfers. (Except when - * short OUT transfers happen.) Drivers can use the req->no_interrupt - * hint to completely eliminate some IRQs, if a later IRQ is guaranteed - * and DMA chaining is enabled. + * DMA is enabled by default. * * MSI is enabled by default. The legacy IRQ is used if MSI couldn't * be enabled. @@ -84,23 +80,6 @@ static const char *const ep_name[] = { "ep-e", "ep-f", "ep-g", "ep-h", }; -/* use_dma -- general goodness, fewer interrupts, less cpu load (vs PIO) - * use_dma_chaining -- dma descriptor queueing gives even more irq reduction - * - * The net2280 DMA engines are not tightly integrated with their FIFOs; - * not all cases are (yet) handled well in this driver or the silicon. - * Some gadget drivers work better with the dma support here than others. - * These two parameters let you use PIO or more aggressive DMA. - */ -static bool use_dma = true; -static bool use_dma_chaining; -static bool use_msi = true; - -/* "modprobe net2280 use_dma=n" etc */ -module_param(use_dma, bool, 0444); -module_param(use_dma_chaining, bool, 0444); -module_param(use_msi, bool, 0444); - /* mode 0 == ep-{a,b,c,d} 1K fifo each * mode 1 == ep-{a,b} 2K fifo each, ep-{c,d} unavailable * mode 2 == ep-a 2K fifo, ep-{b,c} 1K each, ep-d unavailable @@ -120,11 +99,6 @@ static bool enable_suspend; /* "modprobe net2280 enable_suspend=1" etc */ module_param(enable_suspend, bool, 0444); -/* force full-speed operation */ -static bool full_speed; -module_param(full_speed, bool, 0444); -MODULE_PARM_DESC(full_speed, "force full-speed mode -- for testing only!"); - #define DIR_STRING(bAddress) (((bAddress) & USB_DIR_IN) ? "in" : "out") static char *type_string(u8 bmAttributes) @@ -202,15 +176,6 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) /* set speed-dependent max packet; may kick in high bandwidth */ set_max_speed(ep, max); - /* FIFO lines can't go to different packets. PIO is ok, so - * use it instead of troublesome (non-bulk) multi-packet DMA. - */ - if (ep->dma && (max % 4) != 0 && use_dma_chaining) { - ep_dbg(ep->dev, "%s, no dma for maxpacket %d\n", - ep->ep.name, ep->ep.maxpacket); - ep->dma = NULL; - } - /* set type, direction, address; reset fifo counters */ writel(BIT(FIFO_FLUSH), &ep->regs->ep_stat); tmp = (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK); @@ -478,7 +443,7 @@ static int net2280_disable(struct usb_ep *_ep) /* synch memory views with the device */ (void)readl(&ep->cfg->ep_cfg); - if (use_dma && !ep->dma && ep->num >= 1 && ep->num <= 4) + if (!ep->dma && ep->num >= 1 && ep->num <= 4) ep->dma = &ep->dev->dma[ep->num - 1]; spin_unlock_irqrestore(&ep->dev->lock, flags); @@ -610,9 +575,15 @@ static void out_flush(struct net2280_ep *ep) u32 __iomem *statp; u32 tmp; - ASSERT_OUT_NAKING(ep); - statp = &ep->regs->ep_stat; + + tmp = readl(statp); + if (tmp & BIT(NAK_OUT_PACKETS)) { + ep_dbg(ep->dev, "%s %s %08x !NAK\n", + ep->ep.name, __func__, tmp); + writel(BIT(SET_NAK_OUT_PACKETS), &ep->regs->ep_rsp); + } + writel(BIT(DATA_OUT_PING_TOKEN_INTERRUPT) | BIT(DATA_PACKET_RECEIVED_INTERRUPT), statp); @@ -747,8 +718,7 @@ static void fill_dma_desc(struct net2280_ep *ep, req->valid = valid; if (valid) dmacount |= BIT(VALID_BIT); - if (likely(!req->req.no_interrupt || !use_dma_chaining)) - dmacount |= BIT(DMA_DONE_INTERRUPT_ENABLE); + dmacount |= BIT(DMA_DONE_INTERRUPT_ENABLE); /* td->dmadesc = previously set by caller */ td->dmaaddr = cpu_to_le32 (req->req.dma); @@ -862,27 +832,11 @@ static void start_dma(struct net2280_ep *ep, struct net2280_request *req) req->td->dmadesc = cpu_to_le32 (ep->td_dma); fill_dma_desc(ep, req, 1); - if (!use_dma_chaining) - req->td->dmacount |= cpu_to_le32(BIT(END_OF_CHAIN)); + req->td->dmacount |= cpu_to_le32(BIT(END_OF_CHAIN)); start_queue(ep, tmp, req->td_dma); } -static inline void resume_dma(struct net2280_ep *ep) -{ - writel(readl(&ep->dma->dmactl) | BIT(DMA_ENABLE), &ep->dma->dmactl); - - ep->dma_started = true; -} - -static inline void ep_stop_dma(struct net2280_ep *ep) -{ - writel(readl(&ep->dma->dmactl) & ~BIT(DMA_ENABLE), &ep->dma->dmactl); - spin_stop_dma(ep->dma); - - ep->dma_started = false; -} - static inline void queue_dma(struct net2280_ep *ep, struct net2280_request *req, int valid) { @@ -973,10 +927,8 @@ net2280_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) return ret; } -#if 0 ep_vdbg(dev, "%s queue req %p, len %d buf %p\n", _ep->name, _req, _req->length, _req->buf); -#endif spin_lock_irqsave(&dev->lock, flags); @@ -984,24 +936,12 @@ net2280_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) _req->actual = 0; /* kickstart this i/o queue? */ - if (list_empty(&ep->queue) && !ep->stopped) { - /* DMA request while EP halted */ - if (ep->dma && - (readl(&ep->regs->ep_rsp) & BIT(CLEAR_ENDPOINT_HALT)) && - (dev->quirks & PLX_SUPERSPEED)) { - int valid = 1; - if (ep->is_in) { - int expect; - expect = likely(req->req.zero || - ((req->req.length % - ep->ep.maxpacket) != 0)); - if (expect != ep->in_fifo_validate) - valid = 0; - } - queue_dma(ep, req, valid); - } + if (list_empty(&ep->queue) && !ep->stopped && + !((dev->quirks & PLX_SUPERSPEED) && ep->dma && + (readl(&ep->regs->ep_rsp) & BIT(CLEAR_ENDPOINT_HALT)))) { + /* use DMA if the endpoint supports it, else pio */ - else if (ep->dma) + if (ep->dma) start_dma(ep, req); else { /* maybe there's no control data, just status ack */ @@ -1084,8 +1024,6 @@ dma_done(struct net2280_ep *ep, struct net2280_request *req, u32 dmacount, done(ep, req, status); } -static void restart_dma(struct net2280_ep *ep); - static void scan_dma_completions(struct net2280_ep *ep) { /* only look at descriptors that were "naturally" retired, @@ -1117,9 +1055,8 @@ static void scan_dma_completions(struct net2280_ep *ep) dma_done(ep, req, tmp, 0); break; } else if (!ep->is_in && - (req->req.length % ep->ep.maxpacket) != 0) { - if (ep->dev->quirks & PLX_SUPERSPEED) - return dma_done(ep, req, tmp, 0); + (req->req.length % ep->ep.maxpacket) && + !(ep->dev->quirks & PLX_SUPERSPEED)) { tmp = readl(&ep->regs->ep_stat); /* AVOID TROUBLE HERE by not issuing short reads from @@ -1150,67 +1087,15 @@ static void scan_dma_completions(struct net2280_ep *ep) static void restart_dma(struct net2280_ep *ep) { struct net2280_request *req; - u32 dmactl = dmactl_default; if (ep->stopped) return; req = list_entry(ep->queue.next, struct net2280_request, queue); - if (!use_dma_chaining) { - start_dma(ep, req); - return; - } - - /* the 2280 will be processing the queue unless queue hiccups after - * the previous transfer: - * IN: wanted automagic zlp, head doesn't (or vice versa) - * DMA_FIFO_VALIDATE doesn't init from dma descriptors. - * OUT: was "usb-short", we must restart. - */ - if (ep->is_in && !req->valid) { - struct net2280_request *entry, *prev = NULL; - int reqmode, done = 0; - - ep_dbg(ep->dev, "%s dma hiccup td %p\n", ep->ep.name, req->td); - ep->in_fifo_validate = likely(req->req.zero || - (req->req.length % ep->ep.maxpacket) != 0); - if (ep->in_fifo_validate) - dmactl |= BIT(DMA_FIFO_VALIDATE); - list_for_each_entry(entry, &ep->queue, queue) { - __le32 dmacount; - - if (entry == req) - continue; - dmacount = entry->td->dmacount; - if (!done) { - reqmode = likely(entry->req.zero || - (entry->req.length % ep->ep.maxpacket)); - if (reqmode == ep->in_fifo_validate) { - entry->valid = 1; - dmacount |= valid_bit; - entry->td->dmacount = dmacount; - prev = entry; - continue; - } else { - /* force a hiccup */ - prev->td->dmacount |= dma_done_ie; - done = 1; - } - } - - /* walk the rest of the queue so unlinks behave */ - entry->valid = 0; - dmacount &= ~valid_bit; - entry->td->dmacount = dmacount; - prev = entry; - } - } - - writel(0, &ep->dma->dmactl); - start_queue(ep, dmactl, req->td_dma); + start_dma(ep, req); } -static void abort_dma_228x(struct net2280_ep *ep) +static void abort_dma(struct net2280_ep *ep) { /* abort the current transfer */ if (likely(!list_empty(&ep->queue))) { @@ -1222,19 +1107,6 @@ static void abort_dma_228x(struct net2280_ep *ep) scan_dma_completions(ep); } -static void abort_dma_338x(struct net2280_ep *ep) -{ - writel(BIT(DMA_ABORT), &ep->dma->dmastat); - spin_stop_dma(ep->dma); -} - -static void abort_dma(struct net2280_ep *ep) -{ - if (ep->dev->quirks & PLX_LEGACY) - return abort_dma_228x(ep); - return abort_dma_338x(ep); -} - /* dequeue ALL requests */ static void nuke(struct net2280_ep *ep) { @@ -1306,25 +1178,6 @@ static int net2280_dequeue(struct usb_ep *_ep, struct usb_request *_req) done(ep, req, -ECONNRESET); } req = NULL; - - /* patch up hardware chaining data */ - } else if (ep->dma && use_dma_chaining) { - if (req->queue.prev == ep->queue.next) { - writel(le32_to_cpu(req->td->dmadesc), - &ep->dma->dmadesc); - if (req->td->dmacount & dma_done_ie) - writel(readl(&ep->dma->dmacount) | - le32_to_cpu(dma_done_ie), - &ep->dma->dmacount); - } else { - struct net2280_request *prev; - - prev = list_entry(req->queue.prev, - struct net2280_request, queue); - prev->td->dmadesc = req->td->dmadesc; - if (req->td->dmacount & dma_done_ie) - prev->td->dmacount |= dma_done_ie; - } } if (req) @@ -1512,10 +1365,10 @@ static int net2280_set_selfpowered(struct usb_gadget *_gadget, int value) tmp = readl(&dev->usb->usbctl); if (value) { tmp |= BIT(SELF_POWERED_STATUS); - dev->selfpowered = 1; + _gadget->is_selfpowered = 1; } else { tmp &= ~BIT(SELF_POWERED_STATUS); - dev->selfpowered = 0; + _gadget->is_selfpowered = 0; } writel(tmp, &dev->usb->usbctl); spin_unlock_irqrestore(&dev->lock, flags); @@ -1604,14 +1457,11 @@ static ssize_t registers_show(struct device *_dev, /* Main Control Registers */ t = scnprintf(next, size, "%s version " DRIVER_VERSION - ", chiprev %04x, dma %s\n\n" + ", chiprev %04x\n\n" "devinit %03x fifoctl %08x gadget '%s'\n" "pci irqenb0 %02x irqenb1 %08x " "irqstat0 %04x irqstat1 %08x\n", driver_name, dev->chiprev, - use_dma - ? (use_dma_chaining ? "chaining" : "enabled") - : "disabled", readl(&dev->regs->devinit), readl(&dev->regs->fifoctl), s, @@ -1913,76 +1763,73 @@ static void defect7374_disable_data_eps(struct net2280 *dev) static void defect7374_enable_data_eps_zero(struct net2280 *dev) { u32 tmp = 0, tmp_reg; - u32 fsmvalue, scratch; + u32 scratch; int i; unsigned char ep_sel; scratch = get_idx_reg(dev->regs, SCRATCH); - fsmvalue = scratch & (0xf << DEFECT7374_FSM_FIELD); + + WARN_ON((scratch & (0xf << DEFECT7374_FSM_FIELD)) + == DEFECT7374_FSM_SS_CONTROL_READ); + scratch &= ~(0xf << DEFECT7374_FSM_FIELD); - /*See if firmware needs to set up for workaround*/ - if (fsmvalue != DEFECT7374_FSM_SS_CONTROL_READ) { - ep_warn(dev, "Operate Defect 7374 workaround soft this time"); - ep_warn(dev, "It will operate on cold-reboot and SS connect"); - - /*GPEPs:*/ - tmp = ((0 << ENDPOINT_NUMBER) | BIT(ENDPOINT_DIRECTION) | - (2 << OUT_ENDPOINT_TYPE) | (2 << IN_ENDPOINT_TYPE) | - ((dev->enhanced_mode) ? - BIT(OUT_ENDPOINT_ENABLE) : BIT(ENDPOINT_ENABLE)) | - BIT(IN_ENDPOINT_ENABLE)); - - for (i = 1; i < 5; i++) - writel(tmp, &dev->ep[i].cfg->ep_cfg); - - /* CSRIN, PCIIN, STATIN, RCIN*/ - tmp = ((0 << ENDPOINT_NUMBER) | BIT(ENDPOINT_ENABLE)); - writel(tmp, &dev->dep[1].dep_cfg); - writel(tmp, &dev->dep[3].dep_cfg); - writel(tmp, &dev->dep[4].dep_cfg); - writel(tmp, &dev->dep[5].dep_cfg); - - /*Implemented for development and debug. - * Can be refined/tuned later.*/ - for (ep_sel = 0; ep_sel <= 21; ep_sel++) { - /* Select an endpoint for subsequent operations: */ - tmp_reg = readl(&dev->plregs->pl_ep_ctrl); - writel(((tmp_reg & ~0x1f) | ep_sel), - &dev->plregs->pl_ep_ctrl); - - if (ep_sel == 1) { - tmp = - (readl(&dev->plregs->pl_ep_ctrl) | - BIT(CLEAR_ACK_ERROR_CODE) | 0); - writel(tmp, &dev->plregs->pl_ep_ctrl); - continue; - } + ep_warn(dev, "Operate Defect 7374 workaround soft this time"); + ep_warn(dev, "It will operate on cold-reboot and SS connect"); - if (ep_sel == 0 || (ep_sel > 9 && ep_sel < 14) || - ep_sel == 18 || ep_sel == 20) - continue; + /*GPEPs:*/ + tmp = ((0 << ENDPOINT_NUMBER) | BIT(ENDPOINT_DIRECTION) | + (2 << OUT_ENDPOINT_TYPE) | (2 << IN_ENDPOINT_TYPE) | + ((dev->enhanced_mode) ? + BIT(OUT_ENDPOINT_ENABLE) : BIT(ENDPOINT_ENABLE)) | + BIT(IN_ENDPOINT_ENABLE)); - tmp = (readl(&dev->plregs->pl_ep_cfg_4) | - BIT(NON_CTRL_IN_TOLERATE_BAD_DIR) | 0); - writel(tmp, &dev->plregs->pl_ep_cfg_4); + for (i = 1; i < 5; i++) + writel(tmp, &dev->ep[i].cfg->ep_cfg); - tmp = readl(&dev->plregs->pl_ep_ctrl) & - ~BIT(EP_INITIALIZED); - writel(tmp, &dev->plregs->pl_ep_ctrl); + /* CSRIN, PCIIN, STATIN, RCIN*/ + tmp = ((0 << ENDPOINT_NUMBER) | BIT(ENDPOINT_ENABLE)); + writel(tmp, &dev->dep[1].dep_cfg); + writel(tmp, &dev->dep[3].dep_cfg); + writel(tmp, &dev->dep[4].dep_cfg); + writel(tmp, &dev->dep[5].dep_cfg); + + /*Implemented for development and debug. + * Can be refined/tuned later.*/ + for (ep_sel = 0; ep_sel <= 21; ep_sel++) { + /* Select an endpoint for subsequent operations: */ + tmp_reg = readl(&dev->plregs->pl_ep_ctrl); + writel(((tmp_reg & ~0x1f) | ep_sel), + &dev->plregs->pl_ep_ctrl); + if (ep_sel == 1) { + tmp = + (readl(&dev->plregs->pl_ep_ctrl) | + BIT(CLEAR_ACK_ERROR_CODE) | 0); + writel(tmp, &dev->plregs->pl_ep_ctrl); + continue; } - /* Set FSM to focus on the first Control Read: - * - Tip: Connection speed is known upon the first - * setup request.*/ - scratch |= DEFECT7374_FSM_WAITING_FOR_CONTROL_READ; - set_idx_reg(dev->regs, SCRATCH, scratch); + if (ep_sel == 0 || (ep_sel > 9 && ep_sel < 14) || + ep_sel == 18 || ep_sel == 20) + continue; + + tmp = (readl(&dev->plregs->pl_ep_cfg_4) | + BIT(NON_CTRL_IN_TOLERATE_BAD_DIR) | 0); + writel(tmp, &dev->plregs->pl_ep_cfg_4); + + tmp = readl(&dev->plregs->pl_ep_ctrl) & + ~BIT(EP_INITIALIZED); + writel(tmp, &dev->plregs->pl_ep_ctrl); - } else{ - ep_warn(dev, "Defect 7374 workaround soft will NOT operate"); - ep_warn(dev, "It will operate on cold-reboot and SS connect"); } + + /* Set FSM to focus on the first Control Read: + * - Tip: Connection speed is known upon the first + * setup request.*/ + scratch |= DEFECT7374_FSM_WAITING_FOR_CONTROL_READ; + set_idx_reg(dev->regs, SCRATCH, scratch); + } /* keeping it simple: @@ -2033,21 +1880,13 @@ static void usb_reset_228x(struct net2280 *dev) static void usb_reset_338x(struct net2280 *dev) { u32 tmp; - u32 fsmvalue; dev->gadget.speed = USB_SPEED_UNKNOWN; (void)readl(&dev->usb->usbctl); net2280_led_init(dev); - fsmvalue = get_idx_reg(dev->regs, SCRATCH) & - (0xf << DEFECT7374_FSM_FIELD); - - /* See if firmware needs to set up for workaround: */ - if (fsmvalue != DEFECT7374_FSM_SS_CONTROL_READ) { - ep_info(dev, "%s: Defect 7374 FsmValue 0x%08x\n", __func__, - fsmvalue); - } else { + if (dev->bug7734_patched) { /* disable automatic responses, and irqs */ writel(0, &dev->usb->stdrsp); writel(0, &dev->regs->pciirqenb0); @@ -2064,7 +1903,7 @@ static void usb_reset_338x(struct net2280 *dev) writel(~0, &dev->regs->irqstat0), writel(~0, &dev->regs->irqstat1); - if (fsmvalue == DEFECT7374_FSM_SS_CONTROL_READ) { + if (dev->bug7734_patched) { /* reset, and enable pci */ tmp = readl(&dev->regs->devinit) | BIT(PCI_ENABLE) | @@ -2093,10 +1932,6 @@ static void usb_reset(struct net2280 *dev) static void usb_reinit_228x(struct net2280 *dev) { u32 tmp; - int init_dma; - - /* use_dma changes are ignored till next device re-init */ - init_dma = use_dma; /* basic endpoint init */ for (tmp = 0; tmp < 7; tmp++) { @@ -2108,8 +1943,7 @@ static void usb_reinit_228x(struct net2280 *dev) if (tmp > 0 && tmp <= 4) { ep->fifo_size = 1024; - if (init_dma) - ep->dma = &dev->dma[tmp - 1]; + ep->dma = &dev->dma[tmp - 1]; } else ep->fifo_size = 64; ep->regs = &dev->epregs[tmp]; @@ -2133,17 +1967,12 @@ static void usb_reinit_228x(struct net2280 *dev) static void usb_reinit_338x(struct net2280 *dev) { - int init_dma; int i; u32 tmp, val; - u32 fsmvalue; static const u32 ne[9] = { 0, 1, 2, 3, 4, 1, 2, 3, 4 }; static const u32 ep_reg_addr[9] = { 0x00, 0xC0, 0x00, 0xC0, 0x00, 0x00, 0xC0, 0x00, 0xC0 }; - /* use_dma changes are ignored till next device re-init */ - init_dma = use_dma; - /* basic endpoint init */ for (i = 0; i < dev->n_ep; i++) { struct net2280_ep *ep = &dev->ep[i]; @@ -2152,7 +1981,7 @@ static void usb_reinit_338x(struct net2280 *dev) ep->dev = dev; ep->num = i; - if (i > 0 && i <= 4 && init_dma) + if (i > 0 && i <= 4) ep->dma = &dev->dma[i - 1]; if (dev->enhanced_mode) { @@ -2177,14 +2006,7 @@ static void usb_reinit_338x(struct net2280 *dev) dev->ep[0].stopped = 0; /* Link layer set up */ - fsmvalue = get_idx_reg(dev->regs, SCRATCH) & - (0xf << DEFECT7374_FSM_FIELD); - - /* See if driver needs to set up for workaround: */ - if (fsmvalue != DEFECT7374_FSM_SS_CONTROL_READ) - ep_info(dev, "%s: Defect 7374 FsmValue %08x\n", - __func__, fsmvalue); - else { + if (dev->bug7734_patched) { tmp = readl(&dev->usb_ext->usbctl2) & ~(BIT(U1_ENABLE) | BIT(U2_ENABLE) | BIT(LTM_ENABLE)); writel(tmp, &dev->usb_ext->usbctl2); @@ -2291,15 +2113,8 @@ static void ep0_start_228x(struct net2280 *dev) static void ep0_start_338x(struct net2280 *dev) { - u32 fsmvalue; - - fsmvalue = get_idx_reg(dev->regs, SCRATCH) & - (0xf << DEFECT7374_FSM_FIELD); - if (fsmvalue != DEFECT7374_FSM_SS_CONTROL_READ) - ep_info(dev, "%s: Defect 7374 FsmValue %08x\n", __func__, - fsmvalue); - else + if (dev->bug7734_patched) writel(BIT(CLEAR_NAK_OUT_PACKETS_MODE) | BIT(SET_EP_HIDE_STATUS_PHASE), &dev->epregs[0].ep_rsp); @@ -2382,16 +2197,12 @@ static int net2280_start(struct usb_gadget *_gadget, if (retval) goto err_func; - /* Enable force-full-speed testing mode, if desired */ - if (full_speed && (dev->quirks & PLX_LEGACY)) - writel(BIT(FORCE_FULL_SPEED_MODE), &dev->usb->xcvrdiag); - - /* ... then enable host detection and ep0; and we're ready + /* enable host detection and ep0; and we're ready * for set_configuration as well as eventual disconnect. */ net2280_led_active(dev, 1); - if (dev->quirks & PLX_SUPERSPEED) + if ((dev->quirks & PLX_SUPERSPEED) && !dev->bug7734_patched) defect7374_enable_data_eps_zero(dev); ep0_start(dev); @@ -2444,10 +2255,6 @@ static int net2280_stop(struct usb_gadget *_gadget) net2280_led_active(dev, 0); - /* Disable full-speed test mode */ - if (dev->quirks & PLX_LEGACY) - writel(0, &dev->usb->xcvrdiag); - device_remove_file(&dev->pdev->dev, &dev_attr_function); device_remove_file(&dev->pdev->dev, &dev_attr_queues); @@ -2478,10 +2285,10 @@ static void handle_ep_small(struct net2280_ep *ep) /* ack all, and handle what we care about */ t = readl(&ep->regs->ep_stat); ep->irqs++; -#if 0 + ep_vdbg(ep->dev, "%s ack ep_stat %08x, req %p\n", - ep->ep.name, t, req ? &req->req : 0); -#endif + ep->ep.name, t, req ? &req->req : NULL); + if (!ep->is_in || (ep->dev->quirks & PLX_2280)) writel(t & ~BIT(NAK_OUT_PACKETS), &ep->regs->ep_stat); else @@ -2717,6 +2524,7 @@ static void defect7374_workaround(struct net2280 *dev, struct usb_ctrlrequest r) * run after the next USB connection. */ scratch |= DEFECT7374_FSM_NON_SS_CONTROL_READ; + dev->bug7734_patched = 1; goto restore_data_eps; } @@ -2730,6 +2538,7 @@ static void defect7374_workaround(struct net2280 *dev, struct usb_ctrlrequest r) if ((state >= (ACK_GOOD_NORMAL << STATE)) && (state <= (ACK_GOOD_MORE_ACKS_TO_COME << STATE))) { scratch |= DEFECT7374_FSM_SS_CONTROL_READ; + dev->bug7734_patched = 1; break; } @@ -2766,80 +2575,19 @@ restore_data_eps: return; } -static void ep_stall(struct net2280_ep *ep, int stall) +static void ep_clear_seqnum(struct net2280_ep *ep) { struct net2280 *dev = ep->dev; u32 val; static const u32 ep_pl[9] = { 0, 3, 4, 7, 8, 2, 5, 6, 9 }; - if (stall) { - writel(BIT(SET_ENDPOINT_HALT) | - /* BIT(SET_NAK_PACKETS) | */ - BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE), - &ep->regs->ep_rsp); - ep->is_halt = 1; - } else { - if (dev->gadget.speed == USB_SPEED_SUPER) { - /* - * Workaround for SS SeqNum not cleared via - * Endpoint Halt (Clear) bit. select endpoint - */ - val = readl(&dev->plregs->pl_ep_ctrl); - val = (val & ~0x1f) | ep_pl[ep->num]; - writel(val, &dev->plregs->pl_ep_ctrl); - - val |= BIT(SEQUENCE_NUMBER_RESET); - writel(val, &dev->plregs->pl_ep_ctrl); - } - val = readl(&ep->regs->ep_rsp); - val |= BIT(CLEAR_ENDPOINT_HALT) | - BIT(CLEAR_ENDPOINT_TOGGLE); - writel(val, - /* | BIT(CLEAR_NAK_PACKETS),*/ - &ep->regs->ep_rsp); - ep->is_halt = 0; - val = readl(&ep->regs->ep_rsp); - } -} - -static void ep_stdrsp(struct net2280_ep *ep, int value, int wedged) -{ - /* set/clear, then synch memory views with the device */ - if (value) { - ep->stopped = 1; - if (ep->num == 0) - ep->dev->protocol_stall = 1; - else { - if (ep->dma) - ep_stop_dma(ep); - ep_stall(ep, true); - } - - if (wedged) - ep->wedged = 1; - } else { - ep->stopped = 0; - ep->wedged = 0; - - ep_stall(ep, false); + val = readl(&dev->plregs->pl_ep_ctrl) & ~0x1f; + val |= ep_pl[ep->num]; + writel(val, &dev->plregs->pl_ep_ctrl); + val |= BIT(SEQUENCE_NUMBER_RESET); + writel(val, &dev->plregs->pl_ep_ctrl); - /* Flush the queue */ - if (!list_empty(&ep->queue)) { - struct net2280_request *req = - list_entry(ep->queue.next, struct net2280_request, - queue); - if (ep->dma) - resume_dma(ep); - else { - if (ep->is_in) - write_fifo(ep, &req->req); - else { - if (read_fifo(ep, req)) - done(ep, req, 0); - } - } - } - } + return; } static void handle_stat0_irqs_superspeed(struct net2280 *dev, @@ -2863,7 +2611,7 @@ static void handle_stat0_irqs_superspeed(struct net2280 *dev, switch (r.bRequestType) { case (USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE): status = dev->wakeup_enable ? 0x02 : 0x00; - if (dev->selfpowered) + if (dev->gadget.is_selfpowered) status |= BIT(0); status |= (dev->u1_enable << 2 | dev->u2_enable << 3 | dev->ltm_enable << 4); @@ -2940,7 +2688,12 @@ static void handle_stat0_irqs_superspeed(struct net2280 *dev, if (w_value != USB_ENDPOINT_HALT) goto do_stall3; ep_vdbg(dev, "%s clear halt\n", e->ep.name); - ep_stall(e, false); + /* + * Workaround for SS SeqNum not cleared via + * Endpoint Halt (Clear) bit. select endpoint + */ + ep_clear_seqnum(e); + clear_halt(e); if (!list_empty(&e->queue) && e->td_dma) restart_dma(e); allow_status(ep); @@ -2998,7 +2751,14 @@ static void handle_stat0_irqs_superspeed(struct net2280 *dev, e = get_ep_by_addr(dev, w_index); if (!e || (w_value != USB_ENDPOINT_HALT)) goto do_stall3; - ep_stdrsp(e, true, false); + ep->stopped = 1; + if (ep->num == 0) + ep->dev->protocol_stall = 1; + else { + if (ep->dma) + abort_dma(ep); + set_halt(ep); + } allow_status_338x(ep); break; @@ -3026,7 +2786,7 @@ do_stall3: r.bRequestType, r.bRequest, tmp); dev->protocol_stall = 1; /* TD 9.9 Halt Endpoint test. TD 9.22 Set feature test */ - ep_stall(ep, true); + set_halt(ep); } next_endpoints3: @@ -3091,9 +2851,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat) } ep->stopped = 0; dev->protocol_stall = 0; - if (dev->quirks & PLX_SUPERSPEED) - ep->is_halt = 0; - else{ + if (!(dev->quirks & PLX_SUPERSPEED)) { if (ep->dev->quirks & PLX_2280) tmp = BIT(FIFO_OVERFLOW) | BIT(FIFO_UNDERFLOW); @@ -3120,7 +2878,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat) cpu_to_le32s(&u.raw[0]); cpu_to_le32s(&u.raw[1]); - if (dev->quirks & PLX_SUPERSPEED) + if ((dev->quirks & PLX_SUPERSPEED) && !dev->bug7734_patched) defect7374_workaround(dev, u.r); tmp = 0; @@ -3423,17 +3181,12 @@ static void handle_stat1_irqs(struct net2280 *dev, u32 stat) continue; } - /* chaining should stop on abort, short OUT from fifo, - * or (stat0 codepath) short OUT transfer. - */ - if (!use_dma_chaining) { - if (!(tmp & BIT(DMA_TRANSACTION_DONE_INTERRUPT))) { - ep_dbg(ep->dev, "%s no xact done? %08x\n", - ep->ep.name, tmp); - continue; - } - stop_dma(ep->dma); + if (!(tmp & BIT(DMA_TRANSACTION_DONE_INTERRUPT))) { + ep_dbg(ep->dev, "%s no xact done? %08x\n", + ep->ep.name, tmp); + continue; } + stop_dma(ep->dma); /* OUT transfers terminate when the data from the * host is in our memory. Process whatever's done. @@ -3448,30 +3201,9 @@ static void handle_stat1_irqs(struct net2280 *dev, u32 stat) scan_dma_completions(ep); /* disable dma on inactive queues; else maybe restart */ - if (list_empty(&ep->queue)) { - if (use_dma_chaining) - stop_dma(ep->dma); - } else { + if (!list_empty(&ep->queue)) { tmp = readl(&dma->dmactl); - if (!use_dma_chaining || (tmp & BIT(DMA_ENABLE)) == 0) - restart_dma(ep); - else if (ep->is_in && use_dma_chaining) { - struct net2280_request *req; - __le32 dmacount; - - /* the descriptor at the head of the chain - * may still have VALID_BIT clear; that's - * used to trigger changing DMA_FIFO_VALIDATE - * (affects automagic zlp writes). - */ - req = list_entry(ep->queue.next, - struct net2280_request, queue); - dmacount = req->td->dmacount; - dmacount &= cpu_to_le32(BIT(VALID_BIT) | - DMA_BYTE_COUNT_MASK); - if (dmacount && (dmacount & valid_bit) == 0) - restart_dma(ep); - } + restart_dma(ep); } ep->irqs++; } @@ -3556,7 +3288,7 @@ static void net2280_remove(struct pci_dev *pdev) } if (dev->got_irq) free_irq(pdev->irq, dev); - if (use_msi && dev->quirks & PLX_SUPERSPEED) + if (dev->quirks & PLX_SUPERSPEED) pci_disable_msi(pdev); if (dev->regs) iounmap(dev->regs); @@ -3581,9 +3313,6 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id) void __iomem *base = NULL; int retval, i; - if (!use_dma) - use_dma_chaining = 0; - /* alloc, and start init */ dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (dev == NULL) { @@ -3663,9 +3392,12 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id) fsmvalue = get_idx_reg(dev->regs, SCRATCH) & (0xf << DEFECT7374_FSM_FIELD); /* See if firmware needs to set up for workaround: */ - if (fsmvalue == DEFECT7374_FSM_SS_CONTROL_READ) + if (fsmvalue == DEFECT7374_FSM_SS_CONTROL_READ) { + dev->bug7734_patched = 1; writel(0, &dev->usb->usbctl); - } else{ + } else + dev->bug7734_patched = 0; + } else { dev->enhanced_mode = 0; dev->n_ep = 7; /* put into initial config, link up all endpoints */ @@ -3682,7 +3414,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto done; } - if (use_msi && (dev->quirks & PLX_SUPERSPEED)) + if (dev->quirks & PLX_SUPERSPEED) if (pci_enable_msi(pdev)) ep_err(dev, "Failed to enable MSI mode\n"); @@ -3741,9 +3473,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id) ep_info(dev, "%s\n", driver_desc); ep_info(dev, "irq %d, pci mem %p, chip rev %04x\n", pdev->irq, base, dev->chiprev); - ep_info(dev, "version: " DRIVER_VERSION "; dma %s %s\n", - use_dma ? (use_dma_chaining ? "chaining" : "enabled") - : "disabled", + ep_info(dev, "version: " DRIVER_VERSION "; %s\n", dev->enhanced_mode ? "enhanced mode" : "legacy mode"); retval = device_create_file(&pdev->dev, &dev_attr_registers); if (retval) @@ -3776,9 +3506,6 @@ static void net2280_shutdown(struct pci_dev *pdev) /* disable the pullup so the host will think we're gone */ writel(0, &dev->usb->usbctl); - /* Disable full-speed test mode */ - if (dev->quirks & PLX_LEGACY) - writel(0, &dev->usb->xcvrdiag); } diff --git a/drivers/usb/gadget/udc/net2280.h b/drivers/usb/gadget/udc/net2280.h index 03f15242d794..ac8d5a20a378 100644 --- a/drivers/usb/gadget/udc/net2280.h +++ b/drivers/usb/gadget/udc/net2280.h @@ -100,7 +100,6 @@ struct net2280_ep { dma_addr_t td_dma; /* of dummy */ struct net2280 *dev; unsigned long irqs; - unsigned is_halt:1, dma_started:1; /* analogous to a host-side qh */ struct list_head queue; @@ -126,7 +125,7 @@ static inline void allow_status(struct net2280_ep *ep) ep->stopped = 1; } -static void allow_status_338x(struct net2280_ep *ep) +static inline void allow_status_338x(struct net2280_ep *ep) { /* * Control Status Phase Handshake was set by the chip when the setup @@ -165,8 +164,8 @@ struct net2280 { u2_enable:1, ltm_enable:1, wakeup_enable:1, - selfpowered:1, - addressed_state:1; + addressed_state:1, + bug7734_patched:1; u16 chiprev; int enhanced_mode; int n_ep; @@ -356,23 +355,6 @@ static inline void start_out_naking(struct net2280_ep *ep) readl(&ep->regs->ep_rsp); } -#ifdef DEBUG -static inline void assert_out_naking(struct net2280_ep *ep, const char *where) -{ - u32 tmp = readl(&ep->regs->ep_stat); - - if ((tmp & BIT(NAK_OUT_PACKETS)) == 0) { - ep_dbg(ep->dev, "%s %s %08x !NAK\n", - ep->ep.name, where, tmp); - writel(BIT(SET_NAK_OUT_PACKETS), - &ep->regs->ep_rsp); - } -} -#define ASSERT_OUT_NAKING(ep) assert_out_naking(ep, __func__) -#else -#define ASSERT_OUT_NAKING(ep) do {} while (0) -#endif - static inline void stop_out_naking(struct net2280_ep *ep) { u32 tmp; diff --git a/drivers/usb/gadget/udc/omap_udc.c b/drivers/usb/gadget/udc/omap_udc.c index 288c087220a8..e2fcdb8e5596 100644 --- a/drivers/usb/gadget/udc/omap_udc.c +++ b/drivers/usb/gadget/udc/omap_udc.c @@ -1171,6 +1171,7 @@ omap_set_selfpowered(struct usb_gadget *gadget, int is_selfpowered) unsigned long flags; u16 syscon1; + gadget->is_selfpowered = (is_selfpowered != 0); udc = container_of(gadget, struct omap_udc, gadget); spin_lock_irqsave(&udc->lock, flags); syscon1 = omap_readw(UDC_SYSCON1); diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c index 1c7379ac2379..613547f07828 100644 --- a/drivers/usb/gadget/udc/pch_udc.c +++ b/drivers/usb/gadget/udc/pch_udc.c @@ -1161,6 +1161,7 @@ static int pch_udc_pcd_selfpowered(struct usb_gadget *gadget, int value) if (!gadget) return -EINVAL; + gadget->is_selfpowered = (value != 0); dev = container_of(gadget, struct pch_udc_dev, gadget); if (value) pch_udc_set_selfpowered(dev); diff --git a/drivers/usb/gadget/udc/pxa25x_udc.c b/drivers/usb/gadget/udc/pxa25x_udc.c index 8550b2d5db32..f6cbe667ce39 100644 --- a/drivers/usb/gadget/udc/pxa25x_udc.c +++ b/drivers/usb/gadget/udc/pxa25x_udc.c @@ -1272,7 +1272,6 @@ static int pxa25x_udc_start(struct usb_gadget *g, goto bind_fail; } - pullup(dev); dump_state(dev); return 0; bind_fail: @@ -1339,7 +1338,6 @@ static int pxa25x_udc_stop(struct usb_gadget*g) local_irq_disable(); dev->pullup = 0; - pullup(dev); stop_activity(dev, NULL); local_irq_enable(); diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c index c61a896061fa..6a855fc9bd84 100644 --- a/drivers/usb/gadget/udc/pxa27x_udc.c +++ b/drivers/usb/gadget/udc/pxa27x_udc.c @@ -1809,7 +1809,6 @@ static int pxa27x_udc_start(struct usb_gadget *g, /* first hook up the driver ... */ udc->driver = driver; - dplus_pullup(udc, 1); if (!IS_ERR_OR_NULL(udc->transceiver)) { retval = otg_set_peripheral(udc->transceiver->otg, @@ -1862,7 +1861,6 @@ static int pxa27x_udc_stop(struct usb_gadget *g) stop_activity(udc, NULL); udc_disable(udc); - dplus_pullup(udc, 0); udc->driver = NULL; diff --git a/drivers/usb/gadget/udc/r8a66597-udc.c b/drivers/usb/gadget/udc/r8a66597-udc.c index 06870da0b988..2495fe9c95c5 100644 --- a/drivers/usb/gadget/udc/r8a66597-udc.c +++ b/drivers/usb/gadget/udc/r8a66597-udc.c @@ -1803,6 +1803,7 @@ static int r8a66597_set_selfpowered(struct usb_gadget *gadget, int is_self) { struct r8a66597 *r8a66597 = gadget_to_r8a66597(gadget); + gadget->is_selfpowered = (is_self != 0); if (is_self) r8a66597->device_status |= 1 << USB_DEVICE_SELF_POWERED; else diff --git a/drivers/usb/gadget/udc/s3c2410_udc.c b/drivers/usb/gadget/udc/s3c2410_udc.c index 824cf12e9add..b808951491cc 100644 --- a/drivers/usb/gadget/udc/s3c2410_udc.c +++ b/drivers/usb/gadget/udc/s3c2410_udc.c @@ -238,14 +238,6 @@ static inline void s3c2410_udc_set_ep0_de_out(void __iomem *base) S3C2410_UDC_EP0_CSR_REG); } -static inline void s3c2410_udc_set_ep0_sse_out(void __iomem *base) -{ - udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG); - udc_writeb(base, (S3C2410_UDC_EP0_CSR_SOPKTRDY - | S3C2410_UDC_EP0_CSR_SSE), - S3C2410_UDC_EP0_CSR_REG); -} - static inline void s3c2410_udc_set_ep0_de_in(void __iomem *base) { udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG); @@ -291,18 +283,6 @@ static void s3c2410_udc_nuke(struct s3c2410_udc *udc, } } -static inline void s3c2410_udc_clear_ep_state(struct s3c2410_udc *dev) -{ - unsigned i; - - /* hardware SET_{CONFIGURATION,INTERFACE} automagic resets endpoint - * fifos, and pending transactions mustn't be continued in any case. - */ - - for (i = 1; i < S3C2410_ENDPOINTS; i++) - s3c2410_udc_nuke(dev, &dev->ep[i], -ECONNABORTED); -} - static inline int s3c2410_udc_fifo_count_out(void) { int tmp; @@ -1454,6 +1434,7 @@ static int s3c2410_udc_set_selfpowered(struct usb_gadget *gadget, int value) dprintk(DEBUG_NORMAL, "%s()\n", __func__); + gadget->is_selfpowered = (value != 0); if (value) udc->devstatus |= (1 << USB_DEVICE_SELF_POWERED); else diff --git a/drivers/usb/gadget/udc/udc-core.c b/drivers/usb/gadget/udc/udc-core.c index e31d574d8860..5a81cb086b99 100644 --- a/drivers/usb/gadget/udc/udc-core.c +++ b/drivers/usb/gadget/udc/udc-core.c @@ -564,6 +564,7 @@ static USB_UDC_ATTR(is_a_peripheral); static USB_UDC_ATTR(b_hnp_enable); static USB_UDC_ATTR(a_hnp_support); static USB_UDC_ATTR(a_alt_hnp_support); +static USB_UDC_ATTR(is_selfpowered); static struct attribute *usb_udc_attrs[] = { &dev_attr_srp.attr, @@ -577,6 +578,7 @@ static struct attribute *usb_udc_attrs[] = { &dev_attr_b_hnp_enable.attr, &dev_attr_a_hnp_support.attr, &dev_attr_a_alt_hnp_support.attr, + &dev_attr_is_selfpowered.attr, NULL, }; diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 688ba86fe8fb..5ad60e46dc2b 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -331,20 +331,6 @@ config USB_ISP116X_HCD To compile this driver as a module, choose M here: the module will be called isp116x-hcd. -config USB_ISP1760_HCD - tristate "ISP 1760 HCD support" - ---help--- - The ISP1760 chip is a USB 2.0 host controller. - - This driver does not support isochronous transfers or OTG. - This USB controller is usually attached to a non-DMA-Master - capable bus. NXP's eval kit brings this chip on PCI card - where the chip itself is behind a PLB to simulate such - a bus. - - To compile this driver as a module, choose M here: the - module will be called isp1760. - config USB_ISP1362_HCD tristate "ISP1362 HCD support" ---help--- diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index d6216a493bab..65b0b6a58599 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -5,8 +5,6 @@ # tell define_trace.h where to find the xhci trace header CFLAGS_xhci-trace.o := -I$(src) -isp1760-y := isp1760-hcd.o isp1760-if.o - fhci-y := fhci-hcd.o fhci-hub.o fhci-q.o fhci-y += fhci-mem.o fhci-tds.o fhci-sched.o @@ -69,7 +67,6 @@ obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o obj-$(CONFIG_USB_SL811_CS) += sl811_cs.o obj-$(CONFIG_USB_U132_HCD) += u132-hcd.o obj-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o -obj-$(CONFIG_USB_ISP1760_HCD) += isp1760.o obj-$(CONFIG_USB_HWA_HCD) += hwa-hc.o obj-$(CONFIG_USB_IMX21_HCD) += imx21-hcd.o obj-$(CONFIG_USB_FSL_MPH_DR_OF) += fsl-mph-dr-of.o diff --git a/drivers/usb/host/isp1760-hcd.h b/drivers/usb/host/isp1760-hcd.h deleted file mode 100644 index 33dc79ccaa6b..000000000000 --- a/drivers/usb/host/isp1760-hcd.h +++ /dev/null @@ -1,208 +0,0 @@ -#ifndef _ISP1760_HCD_H_ -#define _ISP1760_HCD_H_ - -/* exports for if */ -struct usb_hcd *isp1760_register(phys_addr_t res_start, resource_size_t res_len, - int irq, unsigned long irqflags, - int rst_gpio, - struct device *dev, const char *busname, - unsigned int devflags); -int init_kmem_once(void); -void deinit_kmem_cache(void); - -/* EHCI capability registers */ -#define HC_CAPLENGTH 0x00 -#define HC_HCSPARAMS 0x04 -#define HC_HCCPARAMS 0x08 - -/* EHCI operational registers */ -#define HC_USBCMD 0x20 -#define HC_USBSTS 0x24 -#define HC_FRINDEX 0x2c -#define HC_CONFIGFLAG 0x60 -#define HC_PORTSC1 0x64 -#define HC_ISO_PTD_DONEMAP_REG 0x130 -#define HC_ISO_PTD_SKIPMAP_REG 0x134 -#define HC_ISO_PTD_LASTPTD_REG 0x138 -#define HC_INT_PTD_DONEMAP_REG 0x140 -#define HC_INT_PTD_SKIPMAP_REG 0x144 -#define HC_INT_PTD_LASTPTD_REG 0x148 -#define HC_ATL_PTD_DONEMAP_REG 0x150 -#define HC_ATL_PTD_SKIPMAP_REG 0x154 -#define HC_ATL_PTD_LASTPTD_REG 0x158 - -/* Configuration Register */ -#define HC_HW_MODE_CTRL 0x300 -#define ALL_ATX_RESET (1 << 31) -#define HW_ANA_DIGI_OC (1 << 15) -#define HW_DATA_BUS_32BIT (1 << 8) -#define HW_DACK_POL_HIGH (1 << 6) -#define HW_DREQ_POL_HIGH (1 << 5) -#define HW_INTR_HIGH_ACT (1 << 2) -#define HW_INTR_EDGE_TRIG (1 << 1) -#define HW_GLOBAL_INTR_EN (1 << 0) - -#define HC_CHIP_ID_REG 0x304 -#define HC_SCRATCH_REG 0x308 - -#define HC_RESET_REG 0x30c -#define SW_RESET_RESET_HC (1 << 1) -#define SW_RESET_RESET_ALL (1 << 0) - -#define HC_BUFFER_STATUS_REG 0x334 -#define ISO_BUF_FILL (1 << 2) -#define INT_BUF_FILL (1 << 1) -#define ATL_BUF_FILL (1 << 0) - -#define HC_MEMORY_REG 0x33c -#define ISP_BANK(x) ((x) << 16) - -#define HC_PORT1_CTRL 0x374 -#define PORT1_POWER (3 << 3) -#define PORT1_INIT1 (1 << 7) -#define PORT1_INIT2 (1 << 23) -#define HW_OTG_CTRL_SET 0x374 -#define HW_OTG_CTRL_CLR 0x376 - -/* Interrupt Register */ -#define HC_INTERRUPT_REG 0x310 - -#define HC_INTERRUPT_ENABLE 0x314 -#define HC_ISO_INT (1 << 9) -#define HC_ATL_INT (1 << 8) -#define HC_INTL_INT (1 << 7) -#define HC_EOT_INT (1 << 3) -#define HC_SOT_INT (1 << 1) -#define INTERRUPT_ENABLE_MASK (HC_INTL_INT | HC_ATL_INT) - -#define HC_ISO_IRQ_MASK_OR_REG 0x318 -#define HC_INT_IRQ_MASK_OR_REG 0x31C -#define HC_ATL_IRQ_MASK_OR_REG 0x320 -#define HC_ISO_IRQ_MASK_AND_REG 0x324 -#define HC_INT_IRQ_MASK_AND_REG 0x328 -#define HC_ATL_IRQ_MASK_AND_REG 0x32C - -/* urb state*/ -#define DELETE_URB (0x0008) -#define NO_TRANSFER_ACTIVE (0xffffffff) - -/* Philips Proprietary Transfer Descriptor (PTD) */ -typedef __u32 __bitwise __dw; -struct ptd { - __dw dw0; - __dw dw1; - __dw dw2; - __dw dw3; - __dw dw4; - __dw dw5; - __dw dw6; - __dw dw7; -}; -#define PTD_OFFSET 0x0400 -#define ISO_PTD_OFFSET 0x0400 -#define INT_PTD_OFFSET 0x0800 -#define ATL_PTD_OFFSET 0x0c00 -#define PAYLOAD_OFFSET 0x1000 - -struct slotinfo { - struct isp1760_qh *qh; - struct isp1760_qtd *qtd; - unsigned long timestamp; -}; - - -typedef void (packet_enqueue)(struct usb_hcd *hcd, struct isp1760_qh *qh, - struct isp1760_qtd *qtd); - -/* - * Device flags that can vary from board to board. All of these - * indicate the most "atypical" case, so that a devflags of 0 is - * a sane default configuration. - */ -#define ISP1760_FLAG_BUS_WIDTH_16 0x00000002 /* 16-bit data bus width */ -#define ISP1760_FLAG_OTG_EN 0x00000004 /* Port 1 supports OTG */ -#define ISP1760_FLAG_ANALOG_OC 0x00000008 /* Analog overcurrent */ -#define ISP1760_FLAG_DACK_POL_HIGH 0x00000010 /* DACK active high */ -#define ISP1760_FLAG_DREQ_POL_HIGH 0x00000020 /* DREQ active high */ -#define ISP1760_FLAG_ISP1761 0x00000040 /* Chip is ISP1761 */ -#define ISP1760_FLAG_INTR_POL_HIGH 0x00000080 /* Interrupt polarity active high */ -#define ISP1760_FLAG_INTR_EDGE_TRIG 0x00000100 /* Interrupt edge triggered */ -#define ISP1760_FLAG_RESET_ACTIVE_HIGH 0x80000000 /* RESET GPIO active high */ - -/* chip memory management */ -struct memory_chunk { - unsigned int start; - unsigned int size; - unsigned int free; -}; - -/* - * 60kb divided in: - * - 32 blocks @ 256 bytes - * - 20 blocks @ 1024 bytes - * - 4 blocks @ 8192 bytes - */ - -#define BLOCK_1_NUM 32 -#define BLOCK_2_NUM 20 -#define BLOCK_3_NUM 4 - -#define BLOCK_1_SIZE 256 -#define BLOCK_2_SIZE 1024 -#define BLOCK_3_SIZE 8192 -#define BLOCKS (BLOCK_1_NUM + BLOCK_2_NUM + BLOCK_3_NUM) -#define MAX_PAYLOAD_SIZE BLOCK_3_SIZE -#define PAYLOAD_AREA_SIZE 0xf000 - -/* ATL */ -/* DW0 */ -#define DW0_VALID_BIT 1 -#define FROM_DW0_VALID(x) ((x) & 0x01) -#define TO_DW0_LENGTH(x) (((u32) x) << 3) -#define TO_DW0_MAXPACKET(x) (((u32) x) << 18) -#define TO_DW0_MULTI(x) (((u32) x) << 29) -#define TO_DW0_ENDPOINT(x) (((u32) x) << 31) -/* DW1 */ -#define TO_DW1_DEVICE_ADDR(x) (((u32) x) << 3) -#define TO_DW1_PID_TOKEN(x) (((u32) x) << 10) -#define DW1_TRANS_BULK ((u32) 2 << 12) -#define DW1_TRANS_INT ((u32) 3 << 12) -#define DW1_TRANS_SPLIT ((u32) 1 << 14) -#define DW1_SE_USB_LOSPEED ((u32) 2 << 16) -#define TO_DW1_PORT_NUM(x) (((u32) x) << 18) -#define TO_DW1_HUB_NUM(x) (((u32) x) << 25) -/* DW2 */ -#define TO_DW2_DATA_START_ADDR(x) (((u32) x) << 8) -#define TO_DW2_RL(x) ((x) << 25) -#define FROM_DW2_RL(x) (((x) >> 25) & 0xf) -/* DW3 */ -#define FROM_DW3_NRBYTESTRANSFERRED(x) ((x) & 0x7fff) -#define FROM_DW3_SCS_NRBYTESTRANSFERRED(x) ((x) & 0x07ff) -#define TO_DW3_NAKCOUNT(x) ((x) << 19) -#define FROM_DW3_NAKCOUNT(x) (((x) >> 19) & 0xf) -#define TO_DW3_CERR(x) ((x) << 23) -#define FROM_DW3_CERR(x) (((x) >> 23) & 0x3) -#define TO_DW3_DATA_TOGGLE(x) ((x) << 25) -#define FROM_DW3_DATA_TOGGLE(x) (((x) >> 25) & 0x1) -#define TO_DW3_PING(x) ((x) << 26) -#define FROM_DW3_PING(x) (((x) >> 26) & 0x1) -#define DW3_ERROR_BIT (1 << 28) -#define DW3_BABBLE_BIT (1 << 29) -#define DW3_HALT_BIT (1 << 30) -#define DW3_ACTIVE_BIT (1 << 31) -#define FROM_DW3_ACTIVE(x) (((x) >> 31) & 0x01) - -#define INT_UNDERRUN (1 << 2) -#define INT_BABBLE (1 << 1) -#define INT_EXACT (1 << 0) - -#define SETUP_PID (2) -#define IN_PID (1) -#define OUT_PID (0) - -/* Errata 1 */ -#define RL_COUNTER (0) -#define NAK_COUNTER (0) -#define ERR_COUNTER (2) - -#endif /* _ISP1760_HCD_H_ */ diff --git a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c deleted file mode 100644 index 09254a43bc01..000000000000 --- a/drivers/usb/host/isp1760-if.c +++ /dev/null @@ -1,477 +0,0 @@ -/* - * Glue code for the ISP1760 driver and bus - * Currently there is support for - * - OpenFirmware - * - PCI - * - PDEV (generic platform device centralized driver model) - * - * (c) 2007 Sebastian Siewior <bigeasy@linutronix.de> - * - */ - -#include <linux/usb.h> -#include <linux/io.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/usb/isp1760.h> -#include <linux/usb/hcd.h> - -#include "isp1760-hcd.h" - -#if defined(CONFIG_OF) && defined(CONFIG_OF_IRQ) -#include <linux/slab.h> -#include <linux/of.h> -#include <linux/of_platform.h> -#include <linux/of_address.h> -#include <linux/of_irq.h> -#include <linux/of_gpio.h> -#endif - -#ifdef CONFIG_PCI -#include <linux/pci.h> -#endif - -#if defined(CONFIG_OF) && defined(CONFIG_OF_IRQ) -struct isp1760 { - struct usb_hcd *hcd; - int rst_gpio; -}; - -static int of_isp1760_probe(struct platform_device *dev) -{ - struct isp1760 *drvdata; - struct device_node *dp = dev->dev.of_node; - struct resource *res; - struct resource memory; - int virq; - resource_size_t res_len; - int ret; - unsigned int devflags = 0; - enum of_gpio_flags gpio_flags; - u32 bus_width = 0; - - drvdata = kzalloc(sizeof(*drvdata), GFP_KERNEL); - if (!drvdata) - return -ENOMEM; - - ret = of_address_to_resource(dp, 0, &memory); - if (ret) { - ret = -ENXIO; - goto free_data; - } - - res_len = resource_size(&memory); - - res = request_mem_region(memory.start, res_len, dev_name(&dev->dev)); - if (!res) { - ret = -EBUSY; - goto free_data; - } - - virq = irq_of_parse_and_map(dp, 0); - if (!virq) { - ret = -ENODEV; - goto release_reg; - } - - if (of_device_is_compatible(dp, "nxp,usb-isp1761")) - devflags |= ISP1760_FLAG_ISP1761; - - /* Some systems wire up only 16 of the 32 data lines */ - of_property_read_u32(dp, "bus-width", &bus_width); - if (bus_width == 16) - devflags |= ISP1760_FLAG_BUS_WIDTH_16; - - if (of_get_property(dp, "port1-otg", NULL) != NULL) - devflags |= ISP1760_FLAG_OTG_EN; - - if (of_get_property(dp, "analog-oc", NULL) != NULL) - devflags |= ISP1760_FLAG_ANALOG_OC; - - if (of_get_property(dp, "dack-polarity", NULL) != NULL) - devflags |= ISP1760_FLAG_DACK_POL_HIGH; - - if (of_get_property(dp, "dreq-polarity", NULL) != NULL) - devflags |= ISP1760_FLAG_DREQ_POL_HIGH; - - drvdata->rst_gpio = of_get_gpio_flags(dp, 0, &gpio_flags); - if (gpio_is_valid(drvdata->rst_gpio)) { - ret = gpio_request(drvdata->rst_gpio, dev_name(&dev->dev)); - if (!ret) { - if (!(gpio_flags & OF_GPIO_ACTIVE_LOW)) { - devflags |= ISP1760_FLAG_RESET_ACTIVE_HIGH; - gpio_direction_output(drvdata->rst_gpio, 0); - } else { - gpio_direction_output(drvdata->rst_gpio, 1); - } - } else { - drvdata->rst_gpio = ret; - } - } - - drvdata->hcd = isp1760_register(memory.start, res_len, virq, - IRQF_SHARED, drvdata->rst_gpio, - &dev->dev, dev_name(&dev->dev), - devflags); - if (IS_ERR(drvdata->hcd)) { - ret = PTR_ERR(drvdata->hcd); - goto free_gpio; - } - - platform_set_drvdata(dev, drvdata); - return ret; - -free_gpio: - if (gpio_is_valid(drvdata->rst_gpio)) - gpio_free(drvdata->rst_gpio); -release_reg: - release_mem_region(memory.start, res_len); -free_data: - kfree(drvdata); - return ret; -} - -static int of_isp1760_remove(struct platform_device *dev) -{ - struct isp1760 *drvdata = platform_get_drvdata(dev); - - usb_remove_hcd(drvdata->hcd); - iounmap(drvdata->hcd->regs); - release_mem_region(drvdata->hcd->rsrc_start, drvdata->hcd->rsrc_len); - usb_put_hcd(drvdata->hcd); - - if (gpio_is_valid(drvdata->rst_gpio)) - gpio_free(drvdata->rst_gpio); - - kfree(drvdata); - return 0; -} - -static const struct of_device_id of_isp1760_match[] = { - { - .compatible = "nxp,usb-isp1760", - }, - { - .compatible = "nxp,usb-isp1761", - }, - { }, -}; -MODULE_DEVICE_TABLE(of, of_isp1760_match); - -static struct platform_driver isp1760_of_driver = { - .driver = { - .name = "nxp-isp1760", - .of_match_table = of_isp1760_match, - }, - .probe = of_isp1760_probe, - .remove = of_isp1760_remove, -}; -#endif - -#ifdef CONFIG_PCI -static int isp1761_pci_probe(struct pci_dev *dev, - const struct pci_device_id *id) -{ - u8 latency, limit; - __u32 reg_data; - int retry_count; - struct usb_hcd *hcd; - unsigned int devflags = 0; - int ret_status = 0; - - resource_size_t pci_mem_phy0; - resource_size_t memlength; - - u8 __iomem *chip_addr; - u8 __iomem *iobase; - resource_size_t nxp_pci_io_base; - resource_size_t iolength; - - if (usb_disabled()) - return -ENODEV; - - if (pci_enable_device(dev) < 0) - return -ENODEV; - - if (!dev->irq) - return -ENODEV; - - /* Grab the PLX PCI mem maped port start address we need */ - nxp_pci_io_base = pci_resource_start(dev, 0); - iolength = pci_resource_len(dev, 0); - - if (!request_mem_region(nxp_pci_io_base, iolength, "ISP1761 IO MEM")) { - printk(KERN_ERR "request region #1\n"); - return -EBUSY; - } - - iobase = ioremap_nocache(nxp_pci_io_base, iolength); - if (!iobase) { - printk(KERN_ERR "ioremap #1\n"); - ret_status = -ENOMEM; - goto cleanup1; - } - /* Grab the PLX PCI shared memory of the ISP 1761 we need */ - pci_mem_phy0 = pci_resource_start(dev, 3); - memlength = pci_resource_len(dev, 3); - if (memlength < 0xffff) { - printk(KERN_ERR "memory length for this resource is wrong\n"); - ret_status = -ENOMEM; - goto cleanup2; - } - - if (!request_mem_region(pci_mem_phy0, memlength, "ISP-PCI")) { - printk(KERN_ERR "host controller already in use\n"); - ret_status = -EBUSY; - goto cleanup2; - } - - /* map available memory */ - chip_addr = ioremap_nocache(pci_mem_phy0,memlength); - if (!chip_addr) { - printk(KERN_ERR "Error ioremap failed\n"); - ret_status = -ENOMEM; - goto cleanup3; - } - - /* bad pci latencies can contribute to overruns */ - pci_read_config_byte(dev, PCI_LATENCY_TIMER, &latency); - if (latency) { - pci_read_config_byte(dev, PCI_MAX_LAT, &limit); - if (limit && limit < latency) - pci_write_config_byte(dev, PCI_LATENCY_TIMER, limit); - } - - /* Try to check whether we can access Scratch Register of - * Host Controller or not. The initial PCI access is retried until - * local init for the PCI bridge is completed - */ - retry_count = 20; - reg_data = 0; - while ((reg_data != 0xFACE) && retry_count) { - /*by default host is in 16bit mode, so - * io operations at this stage must be 16 bit - * */ - writel(0xface, chip_addr + HC_SCRATCH_REG); - udelay(100); - reg_data = readl(chip_addr + HC_SCRATCH_REG) & 0x0000ffff; - retry_count--; - } - - iounmap(chip_addr); - - /* Host Controller presence is detected by writing to scratch register - * and reading back and checking the contents are same or not - */ - if (reg_data != 0xFACE) { - dev_err(&dev->dev, "scratch register mismatch %x\n", reg_data); - ret_status = -ENOMEM; - goto cleanup3; - } - - pci_set_master(dev); - - /* configure PLX PCI chip to pass interrupts */ -#define PLX_INT_CSR_REG 0x68 - reg_data = readl(iobase + PLX_INT_CSR_REG); - reg_data |= 0x900; - writel(reg_data, iobase + PLX_INT_CSR_REG); - - dev->dev.dma_mask = NULL; - hcd = isp1760_register(pci_mem_phy0, memlength, dev->irq, - IRQF_SHARED, -ENOENT, &dev->dev, dev_name(&dev->dev), - devflags); - if (IS_ERR(hcd)) { - ret_status = -ENODEV; - goto cleanup3; - } - - /* done with PLX IO access */ - iounmap(iobase); - release_mem_region(nxp_pci_io_base, iolength); - - pci_set_drvdata(dev, hcd); - return 0; - -cleanup3: - release_mem_region(pci_mem_phy0, memlength); -cleanup2: - iounmap(iobase); -cleanup1: - release_mem_region(nxp_pci_io_base, iolength); - return ret_status; -} - -static void isp1761_pci_remove(struct pci_dev *dev) -{ - struct usb_hcd *hcd; - - hcd = pci_get_drvdata(dev); - - usb_remove_hcd(hcd); - iounmap(hcd->regs); - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); - usb_put_hcd(hcd); - - pci_disable_device(dev); -} - -static void isp1761_pci_shutdown(struct pci_dev *dev) -{ - printk(KERN_ERR "ips1761_pci_shutdown\n"); -} - -static const struct pci_device_id isp1760_plx [] = { - { - .class = PCI_CLASS_BRIDGE_OTHER << 8, - .class_mask = ~0, - .vendor = PCI_VENDOR_ID_PLX, - .device = 0x5406, - .subvendor = PCI_VENDOR_ID_PLX, - .subdevice = 0x9054, - }, - { } -}; -MODULE_DEVICE_TABLE(pci, isp1760_plx); - -static struct pci_driver isp1761_pci_driver = { - .name = "isp1760", - .id_table = isp1760_plx, - .probe = isp1761_pci_probe, - .remove = isp1761_pci_remove, - .shutdown = isp1761_pci_shutdown, -}; -#endif - -static int isp1760_plat_probe(struct platform_device *pdev) -{ - int ret = 0; - struct usb_hcd *hcd; - struct resource *mem_res; - struct resource *irq_res; - resource_size_t mem_size; - struct isp1760_platform_data *priv = dev_get_platdata(&pdev->dev); - unsigned int devflags = 0; - unsigned long irqflags = IRQF_SHARED; - - mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!mem_res) { - pr_warning("isp1760: Memory resource not available\n"); - ret = -ENODEV; - goto out; - } - mem_size = resource_size(mem_res); - if (!request_mem_region(mem_res->start, mem_size, "isp1760")) { - pr_warning("isp1760: Cannot reserve the memory resource\n"); - ret = -EBUSY; - goto out; - } - - irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!irq_res) { - pr_warning("isp1760: IRQ resource not available\n"); - ret = -ENODEV; - goto cleanup; - } - - irqflags |= irq_res->flags & IRQF_TRIGGER_MASK; - - if (priv) { - if (priv->is_isp1761) - devflags |= ISP1760_FLAG_ISP1761; - if (priv->bus_width_16) - devflags |= ISP1760_FLAG_BUS_WIDTH_16; - if (priv->port1_otg) - devflags |= ISP1760_FLAG_OTG_EN; - if (priv->analog_oc) - devflags |= ISP1760_FLAG_ANALOG_OC; - if (priv->dack_polarity_high) - devflags |= ISP1760_FLAG_DACK_POL_HIGH; - if (priv->dreq_polarity_high) - devflags |= ISP1760_FLAG_DREQ_POL_HIGH; - } - - hcd = isp1760_register(mem_res->start, mem_size, irq_res->start, - irqflags, -ENOENT, - &pdev->dev, dev_name(&pdev->dev), devflags); - - platform_set_drvdata(pdev, hcd); - - if (IS_ERR(hcd)) { - pr_warning("isp1760: Failed to register the HCD device\n"); - ret = -ENODEV; - goto cleanup; - } - - pr_info("ISP1760 USB device initialised\n"); - return ret; - -cleanup: - release_mem_region(mem_res->start, mem_size); -out: - return ret; -} - -static int isp1760_plat_remove(struct platform_device *pdev) -{ - struct resource *mem_res; - resource_size_t mem_size; - struct usb_hcd *hcd = platform_get_drvdata(pdev); - - usb_remove_hcd(hcd); - - mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - mem_size = resource_size(mem_res); - release_mem_region(mem_res->start, mem_size); - - usb_put_hcd(hcd); - - return 0; -} - -static struct platform_driver isp1760_plat_driver = { - .probe = isp1760_plat_probe, - .remove = isp1760_plat_remove, - .driver = { - .name = "isp1760", - }, -}; - -static int __init isp1760_init(void) -{ - int ret, any_ret = -ENODEV; - - init_kmem_once(); - - ret = platform_driver_register(&isp1760_plat_driver); - if (!ret) - any_ret = 0; -#if defined(CONFIG_OF) && defined(CONFIG_OF_IRQ) - ret = platform_driver_register(&isp1760_of_driver); - if (!ret) - any_ret = 0; -#endif -#ifdef CONFIG_PCI - ret = pci_register_driver(&isp1761_pci_driver); - if (!ret) - any_ret = 0; -#endif - - if (any_ret) - deinit_kmem_cache(); - return any_ret; -} -module_init(isp1760_init); - -static void __exit isp1760_exit(void) -{ - platform_driver_unregister(&isp1760_plat_driver); -#if defined(CONFIG_OF) && defined(CONFIG_OF_IRQ) - platform_driver_unregister(&isp1760_of_driver); -#endif -#ifdef CONFIG_PCI - pci_unregister_driver(&isp1761_pci_driver); -#endif - deinit_kmem_cache(); -} -module_exit(isp1760_exit); diff --git a/drivers/usb/isp1760/Kconfig b/drivers/usb/isp1760/Kconfig new file mode 100644 index 000000000000..c94b7d953399 --- /dev/null +++ b/drivers/usb/isp1760/Kconfig @@ -0,0 +1,59 @@ +config USB_ISP1760 + tristate "NXP ISP 1760/1761 support" + depends on USB || USB_GADGET + help + Say Y or M here if your system as an ISP1760 USB host controller + or an ISP1761 USB dual-role controller. + + This driver does not support isochronous transfers or OTG. + This USB controller is usually attached to a non-DMA-Master + capable bus. NXP's eval kit brings this chip on PCI card + where the chip itself is behind a PLB to simulate such + a bus. + + To compile this driver as a module, choose M here: the + module will be called isp1760. + +config USB_ISP1760_HCD + bool + +config USB_ISP1761_UDC + bool + +if USB_ISP1760 + +choice + bool "ISP1760 Mode Selection" + default USB_ISP1760_DUAL_ROLE if (USB && USB_GADGET) + default USB_ISP1760_HOST_ROLE if (USB && !USB_GADGET) + default USB_ISP1760_GADGET_ROLE if (!USB && USB_GADGET) + +config USB_ISP1760_HOST_ROLE + bool "Host only mode" + depends on USB=y || USB=USB_ISP1760 + select USB_ISP1760_HCD + help + Select this if you want to use the ISP1760 in host mode only. The + gadget function will be disabled. + +config USB_ISP1760_GADGET_ROLE + bool "Gadget only mode" + depends on USB_GADGET=y || USB_GADGET=USB_ISP1760 + select USB_ISP1761_UDC + help + Select this if you want to use the ISP1760 in peripheral mode only. + The host function will be disabled. + +config USB_ISP1760_DUAL_ROLE + bool "Dual Role mode" + depends on USB=y || USB=USB_ISP1760 + depends on USB_GADGET=y || USB_GADGET=USB_ISP1760 + select USB_ISP1760_HCD + select USB_ISP1761_UDC + help + Select this if you want to use the ISP1760 in both host and + peripheral modes. + +endchoice + +endif diff --git a/drivers/usb/isp1760/Makefile b/drivers/usb/isp1760/Makefile new file mode 100644 index 000000000000..2b741074ad2b --- /dev/null +++ b/drivers/usb/isp1760/Makefile @@ -0,0 +1,5 @@ +isp1760-y := isp1760-core.o isp1760-if.o +isp1760-$(CONFIG_USB_ISP1760_HCD) += isp1760-hcd.o +isp1760-$(CONFIG_USB_ISP1761_UDC) += isp1760-udc.o + +obj-$(CONFIG_USB_ISP1760) += isp1760.o diff --git a/drivers/usb/isp1760/isp1760-core.c b/drivers/usb/isp1760/isp1760-core.c new file mode 100644 index 000000000000..b9827556455f --- /dev/null +++ b/drivers/usb/isp1760/isp1760-core.c @@ -0,0 +1,177 @@ +/* + * Driver for the NXP ISP1760 chip + * + * Copyright 2014 Laurent Pinchart + * Copyright 2007 Sebastian Siewior + * + * Contacts: + * Sebastian Siewior <bigeasy@linutronix.de> + * Laurent Pinchart <laurent.pinchart@ideasonboard.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + */ + +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/usb.h> + +#include "isp1760-core.h" +#include "isp1760-hcd.h" +#include "isp1760-regs.h" +#include "isp1760-udc.h" + +static void isp1760_init_core(struct isp1760_device *isp) +{ + u32 otgctrl; + u32 hwmode; + + /* Low-level chip reset */ + if (isp->rst_gpio) { + gpiod_set_value_cansleep(isp->rst_gpio, 1); + mdelay(50); + gpiod_set_value_cansleep(isp->rst_gpio, 0); + } + + /* + * Reset the host controller, including the CPU interface + * configuration. + */ + isp1760_write32(isp->regs, HC_RESET_REG, SW_RESET_RESET_ALL); + msleep(100); + + /* Setup HW Mode Control: This assumes a level active-low interrupt */ + hwmode = HW_DATA_BUS_32BIT; + + if (isp->devflags & ISP1760_FLAG_BUS_WIDTH_16) + hwmode &= ~HW_DATA_BUS_32BIT; + if (isp->devflags & ISP1760_FLAG_ANALOG_OC) + hwmode |= HW_ANA_DIGI_OC; + if (isp->devflags & ISP1760_FLAG_DACK_POL_HIGH) + hwmode |= HW_DACK_POL_HIGH; + if (isp->devflags & ISP1760_FLAG_DREQ_POL_HIGH) + hwmode |= HW_DREQ_POL_HIGH; + if (isp->devflags & ISP1760_FLAG_INTR_POL_HIGH) + hwmode |= HW_INTR_HIGH_ACT; + if (isp->devflags & ISP1760_FLAG_INTR_EDGE_TRIG) + hwmode |= HW_INTR_EDGE_TRIG; + + /* + * The ISP1761 has a dedicated DC IRQ line but supports sharing the HC + * IRQ line for both the host and device controllers. Hardcode IRQ + * sharing for now and disable the DC interrupts globally to avoid + * spurious interrupts during HCD registration. + */ + if (isp->devflags & ISP1760_FLAG_ISP1761) { + isp1760_write32(isp->regs, DC_MODE, 0); + hwmode |= HW_COMN_IRQ; + } + + /* + * We have to set this first in case we're in 16-bit mode. + * Write it twice to ensure correct upper bits if switching + * to 16-bit mode. + */ + isp1760_write32(isp->regs, HC_HW_MODE_CTRL, hwmode); + isp1760_write32(isp->regs, HC_HW_MODE_CTRL, hwmode); + + /* + * PORT 1 Control register of the ISP1760 is the OTG control register + * on ISP1761. + * + * TODO: Really support OTG. For now we configure port 1 in device mode + * when OTG is requested. + */ + if ((isp->devflags & ISP1760_FLAG_ISP1761) && + (isp->devflags & ISP1760_FLAG_OTG_EN)) + otgctrl = ((HW_DM_PULLDOWN | HW_DP_PULLDOWN) << 16) + | HW_OTG_DISABLE; + else + otgctrl = (HW_SW_SEL_HC_DC << 16) + | (HW_VBUS_DRV | HW_SEL_CP_EXT); + + isp1760_write32(isp->regs, HC_PORT1_CTRL, otgctrl); + + dev_info(isp->dev, "bus width: %u, oc: %s\n", + isp->devflags & ISP1760_FLAG_BUS_WIDTH_16 ? 16 : 32, + isp->devflags & ISP1760_FLAG_ANALOG_OC ? "analog" : "digital"); +} + +void isp1760_set_pullup(struct isp1760_device *isp, bool enable) +{ + isp1760_write32(isp->regs, HW_OTG_CTRL_SET, + enable ? HW_DP_PULLUP : HW_DP_PULLUP << 16); +} + +int isp1760_register(struct resource *mem, int irq, unsigned long irqflags, + struct device *dev, unsigned int devflags) +{ + struct isp1760_device *isp; + bool udc_disabled = !(devflags & ISP1760_FLAG_ISP1761); + int ret; + + /* + * If neither the HCD not the UDC is enabled return an error, as no + * device would be registered. + */ + if ((!IS_ENABLED(CONFIG_USB_ISP1760_HCD) || usb_disabled()) && + (!IS_ENABLED(CONFIG_USB_ISP1761_UDC) || udc_disabled)) + return -ENODEV; + + /* prevent usb-core allocating DMA pages */ + dev->dma_mask = NULL; + + isp = devm_kzalloc(dev, sizeof(*isp), GFP_KERNEL); + if (!isp) + return -ENOMEM; + + isp->dev = dev; + isp->devflags = devflags; + + isp->rst_gpio = devm_gpiod_get_optional(dev, NULL, GPIOD_OUT_HIGH); + if (IS_ERR(isp->rst_gpio)) + return PTR_ERR(isp->rst_gpio); + + isp->regs = devm_ioremap_resource(dev, mem); + if (IS_ERR(isp->regs)) + return PTR_ERR(isp->regs); + + isp1760_init_core(isp); + + if (IS_ENABLED(CONFIG_USB_ISP1760_HCD) && !usb_disabled()) { + ret = isp1760_hcd_register(&isp->hcd, isp->regs, mem, irq, + irqflags | IRQF_SHARED, dev); + if (ret < 0) + return ret; + } + + if (IS_ENABLED(CONFIG_USB_ISP1761_UDC) && !udc_disabled) { + ret = isp1760_udc_register(isp, irq, irqflags | IRQF_SHARED | + IRQF_DISABLED); + if (ret < 0) { + isp1760_hcd_unregister(&isp->hcd); + return ret; + } + } + + dev_set_drvdata(dev, isp); + + return 0; +} + +void isp1760_unregister(struct device *dev) +{ + struct isp1760_device *isp = dev_get_drvdata(dev); + + isp1760_udc_unregister(isp); + isp1760_hcd_unregister(&isp->hcd); +} + +MODULE_DESCRIPTION("Driver for the ISP1760 USB-controller from NXP"); +MODULE_AUTHOR("Sebastian Siewior <bigeasy@linuxtronix.de>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/isp1760/isp1760-core.h b/drivers/usb/isp1760/isp1760-core.h new file mode 100644 index 000000000000..c70f8368a794 --- /dev/null +++ b/drivers/usb/isp1760/isp1760-core.h @@ -0,0 +1,68 @@ +/* + * Driver for the NXP ISP1760 chip + * + * Copyright 2014 Laurent Pinchart + * Copyright 2007 Sebastian Siewior + * + * Contacts: + * Sebastian Siewior <bigeasy@linutronix.de> + * Laurent Pinchart <laurent.pinchart@ideasonboard.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + */ + +#ifndef _ISP1760_CORE_H_ +#define _ISP1760_CORE_H_ + +#include <linux/ioport.h> + +#include "isp1760-hcd.h" +#include "isp1760-udc.h" + +struct device; +struct gpio_desc; + +/* + * Device flags that can vary from board to board. All of these + * indicate the most "atypical" case, so that a devflags of 0 is + * a sane default configuration. + */ +#define ISP1760_FLAG_BUS_WIDTH_16 0x00000002 /* 16-bit data bus width */ +#define ISP1760_FLAG_OTG_EN 0x00000004 /* Port 1 supports OTG */ +#define ISP1760_FLAG_ANALOG_OC 0x00000008 /* Analog overcurrent */ +#define ISP1760_FLAG_DACK_POL_HIGH 0x00000010 /* DACK active high */ +#define ISP1760_FLAG_DREQ_POL_HIGH 0x00000020 /* DREQ active high */ +#define ISP1760_FLAG_ISP1761 0x00000040 /* Chip is ISP1761 */ +#define ISP1760_FLAG_INTR_POL_HIGH 0x00000080 /* Interrupt polarity active high */ +#define ISP1760_FLAG_INTR_EDGE_TRIG 0x00000100 /* Interrupt edge triggered */ + +struct isp1760_device { + struct device *dev; + + void __iomem *regs; + unsigned int devflags; + struct gpio_desc *rst_gpio; + + struct isp1760_hcd hcd; + struct isp1760_udc udc; +}; + +int isp1760_register(struct resource *mem, int irq, unsigned long irqflags, + struct device *dev, unsigned int devflags); +void isp1760_unregister(struct device *dev); + +void isp1760_set_pullup(struct isp1760_device *isp, bool enable); + +static inline u32 isp1760_read32(void __iomem *base, u32 reg) +{ + return readl(base + reg); +} + +static inline void isp1760_write32(void __iomem *base, u32 reg, u32 val) +{ + writel(val, base + reg); +} + +#endif diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c index cecf39a220e7..eba9b82e2d70 100644 --- a/drivers/usb/host/isp1760-hcd.c +++ b/drivers/usb/isp1760/isp1760-hcd.c @@ -11,6 +11,7 @@ * (c) 2011 Arvid Brodin <arvid.brodin@enea.com> * */ +#include <linux/gpio/consumer.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/slab.h> @@ -24,73 +25,96 @@ #include <linux/timer.h> #include <asm/unaligned.h> #include <asm/cacheflush.h> -#include <linux/gpio.h> +#include "isp1760-core.h" #include "isp1760-hcd.h" +#include "isp1760-regs.h" static struct kmem_cache *qtd_cachep; static struct kmem_cache *qh_cachep; static struct kmem_cache *urb_listitem_cachep; -enum queue_head_types { - QH_CONTROL, - QH_BULK, - QH_INTERRUPT, - QH_END -}; - -struct isp1760_hcd { - u32 hcs_params; - spinlock_t lock; - struct slotinfo atl_slots[32]; - int atl_done_map; - struct slotinfo int_slots[32]; - int int_done_map; - struct memory_chunk memory_pool[BLOCKS]; - struct list_head qh_list[QH_END]; - - /* periodic schedule support */ -#define DEFAULT_I_TDPS 1024 - unsigned periodic_size; - unsigned i_thresh; - unsigned long reset_done; - unsigned long next_statechange; - unsigned int devflags; - - int rst_gpio; -}; +typedef void (packet_enqueue)(struct usb_hcd *hcd, struct isp1760_qh *qh, + struct isp1760_qtd *qtd); static inline struct isp1760_hcd *hcd_to_priv(struct usb_hcd *hcd) { - return (struct isp1760_hcd *) (hcd->hcd_priv); + return *(struct isp1760_hcd **)hcd->hcd_priv; } -/* Section 2.2 Host Controller Capability Registers */ -#define HC_LENGTH(p) (((p)>>00)&0x00ff) /* bits 7:0 */ -#define HC_VERSION(p) (((p)>>16)&0xffff) /* bits 31:16 */ -#define HCS_INDICATOR(p) ((p)&(1 << 16)) /* true: has port indicators */ -#define HCS_PPC(p) ((p)&(1 << 4)) /* true: port power control */ -#define HCS_N_PORTS(p) (((p)>>0)&0xf) /* bits 3:0, ports on HC */ -#define HCC_ISOC_CACHE(p) ((p)&(1 << 7)) /* true: can cache isoc frame */ -#define HCC_ISOC_THRES(p) (((p)>>4)&0x7) /* bits 6:4, uframes cached */ - -/* Section 2.3 Host Controller Operational Registers */ -#define CMD_LRESET (1<<7) /* partial reset (no ports, etc) */ -#define CMD_RESET (1<<1) /* reset HC not bus */ -#define CMD_RUN (1<<0) /* start/stop HC */ -#define STS_PCD (1<<2) /* port change detect */ -#define FLAG_CF (1<<0) /* true: we'll support "high speed" */ - -#define PORT_OWNER (1<<13) /* true: companion hc owns this port */ -#define PORT_POWER (1<<12) /* true: has power (see PPC) */ -#define PORT_USB11(x) (((x) & (3 << 10)) == (1 << 10)) /* USB 1.1 device */ -#define PORT_RESET (1<<8) /* reset port */ -#define PORT_SUSPEND (1<<7) /* suspend port */ -#define PORT_RESUME (1<<6) /* resume it */ -#define PORT_PE (1<<2) /* port enable */ -#define PORT_CSC (1<<1) /* connect status change */ -#define PORT_CONNECT (1<<0) /* device connected */ -#define PORT_RWC_BITS (PORT_CSC) +/* urb state*/ +#define DELETE_URB (0x0008) +#define NO_TRANSFER_ACTIVE (0xffffffff) + +/* Philips Proprietary Transfer Descriptor (PTD) */ +typedef __u32 __bitwise __dw; +struct ptd { + __dw dw0; + __dw dw1; + __dw dw2; + __dw dw3; + __dw dw4; + __dw dw5; + __dw dw6; + __dw dw7; +}; +#define PTD_OFFSET 0x0400 +#define ISO_PTD_OFFSET 0x0400 +#define INT_PTD_OFFSET 0x0800 +#define ATL_PTD_OFFSET 0x0c00 +#define PAYLOAD_OFFSET 0x1000 + + +/* ATL */ +/* DW0 */ +#define DW0_VALID_BIT 1 +#define FROM_DW0_VALID(x) ((x) & 0x01) +#define TO_DW0_LENGTH(x) (((u32) x) << 3) +#define TO_DW0_MAXPACKET(x) (((u32) x) << 18) +#define TO_DW0_MULTI(x) (((u32) x) << 29) +#define TO_DW0_ENDPOINT(x) (((u32) x) << 31) +/* DW1 */ +#define TO_DW1_DEVICE_ADDR(x) (((u32) x) << 3) +#define TO_DW1_PID_TOKEN(x) (((u32) x) << 10) +#define DW1_TRANS_BULK ((u32) 2 << 12) +#define DW1_TRANS_INT ((u32) 3 << 12) +#define DW1_TRANS_SPLIT ((u32) 1 << 14) +#define DW1_SE_USB_LOSPEED ((u32) 2 << 16) +#define TO_DW1_PORT_NUM(x) (((u32) x) << 18) +#define TO_DW1_HUB_NUM(x) (((u32) x) << 25) +/* DW2 */ +#define TO_DW2_DATA_START_ADDR(x) (((u32) x) << 8) +#define TO_DW2_RL(x) ((x) << 25) +#define FROM_DW2_RL(x) (((x) >> 25) & 0xf) +/* DW3 */ +#define FROM_DW3_NRBYTESTRANSFERRED(x) ((x) & 0x7fff) +#define FROM_DW3_SCS_NRBYTESTRANSFERRED(x) ((x) & 0x07ff) +#define TO_DW3_NAKCOUNT(x) ((x) << 19) +#define FROM_DW3_NAKCOUNT(x) (((x) >> 19) & 0xf) +#define TO_DW3_CERR(x) ((x) << 23) +#define FROM_DW3_CERR(x) (((x) >> 23) & 0x3) +#define TO_DW3_DATA_TOGGLE(x) ((x) << 25) +#define FROM_DW3_DATA_TOGGLE(x) (((x) >> 25) & 0x1) +#define TO_DW3_PING(x) ((x) << 26) +#define FROM_DW3_PING(x) (((x) >> 26) & 0x1) +#define DW3_ERROR_BIT (1 << 28) +#define DW3_BABBLE_BIT (1 << 29) +#define DW3_HALT_BIT (1 << 30) +#define DW3_ACTIVE_BIT (1 << 31) +#define FROM_DW3_ACTIVE(x) (((x) >> 31) & 0x01) + +#define INT_UNDERRUN (1 << 2) +#define INT_BABBLE (1 << 1) +#define INT_EXACT (1 << 0) + +#define SETUP_PID (2) +#define IN_PID (1) +#define OUT_PID (0) + +/* Errata 1 */ +#define RL_COUNTER (0) +#define NAK_COUNTER (0) +#define ERR_COUNTER (2) struct isp1760_qtd { u8 packet_type; @@ -137,12 +161,12 @@ struct urb_listitem { */ static u32 reg_read32(void __iomem *base, u32 reg) { - return readl(base + reg); + return isp1760_read32(base, reg); } static void reg_write32(void __iomem *base, u32 reg, u32 val) { - writel(val, base + reg); + isp1760_write32(base, reg, val); } /* @@ -443,42 +467,6 @@ static int isp1760_hc_setup(struct usb_hcd *hcd) int result; u32 scratch, hwmode; - /* low-level chip reset */ - if (gpio_is_valid(priv->rst_gpio)) { - unsigned int rst_lvl; - - rst_lvl = (priv->devflags & - ISP1760_FLAG_RESET_ACTIVE_HIGH) ? 1 : 0; - - gpio_set_value(priv->rst_gpio, rst_lvl); - mdelay(50); - gpio_set_value(priv->rst_gpio, !rst_lvl); - } - - /* Setup HW Mode Control: This assumes a level active-low interrupt */ - hwmode = HW_DATA_BUS_32BIT; - - if (priv->devflags & ISP1760_FLAG_BUS_WIDTH_16) - hwmode &= ~HW_DATA_BUS_32BIT; - if (priv->devflags & ISP1760_FLAG_ANALOG_OC) - hwmode |= HW_ANA_DIGI_OC; - if (priv->devflags & ISP1760_FLAG_DACK_POL_HIGH) - hwmode |= HW_DACK_POL_HIGH; - if (priv->devflags & ISP1760_FLAG_DREQ_POL_HIGH) - hwmode |= HW_DREQ_POL_HIGH; - if (priv->devflags & ISP1760_FLAG_INTR_POL_HIGH) - hwmode |= HW_INTR_HIGH_ACT; - if (priv->devflags & ISP1760_FLAG_INTR_EDGE_TRIG) - hwmode |= HW_INTR_EDGE_TRIG; - - /* - * We have to set this first in case we're in 16-bit mode. - * Write it twice to ensure correct upper bits if switching - * to 16-bit mode. - */ - reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode); - reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode); - reg_write32(hcd->regs, HC_SCRATCH_REG, 0xdeadbabe); /* Change bus pattern */ scratch = reg_read32(hcd->regs, HC_CHIP_ID_REG); @@ -488,46 +476,33 @@ static int isp1760_hc_setup(struct usb_hcd *hcd) return -ENODEV; } - /* pre reset */ + /* + * The RESET_HC bit in the SW_RESET register is supposed to reset the + * host controller without touching the CPU interface registers, but at + * least on the ISP1761 it seems to behave as the RESET_ALL bit and + * reset the whole device. We thus can't use it here, so let's reset + * the host controller through the EHCI USB Command register. The device + * has been reset in core code anyway, so this shouldn't matter. + */ reg_write32(hcd->regs, HC_BUFFER_STATUS_REG, 0); reg_write32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG, NO_TRANSFER_ACTIVE); reg_write32(hcd->regs, HC_INT_PTD_SKIPMAP_REG, NO_TRANSFER_ACTIVE); reg_write32(hcd->regs, HC_ISO_PTD_SKIPMAP_REG, NO_TRANSFER_ACTIVE); - /* reset */ - reg_write32(hcd->regs, HC_RESET_REG, SW_RESET_RESET_ALL); - mdelay(100); - - reg_write32(hcd->regs, HC_RESET_REG, SW_RESET_RESET_HC); - mdelay(100); - result = ehci_reset(hcd); if (result) return result; /* Step 11 passed */ - dev_info(hcd->self.controller, "bus width: %d, oc: %s\n", - (priv->devflags & ISP1760_FLAG_BUS_WIDTH_16) ? - 16 : 32, (priv->devflags & ISP1760_FLAG_ANALOG_OC) ? - "analog" : "digital"); - /* ATL reset */ + hwmode = reg_read32(hcd->regs, HC_HW_MODE_CTRL) & ~ALL_ATX_RESET; reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode | ALL_ATX_RESET); mdelay(10); reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode); reg_write32(hcd->regs, HC_INTERRUPT_ENABLE, INTERRUPT_ENABLE_MASK); - /* - * PORT 1 Control register of the ISP1760 is the OTG control - * register on ISP1761. Since there is no OTG or device controller - * support in this driver, we use port 1 as a "normal" USB host port on - * both chips. - */ - reg_write32(hcd->regs, HC_PORT1_CTRL, PORT1_POWER | PORT1_INIT2); - mdelay(10); - priv->hcs_params = reg_read32(hcd->regs, HC_HCSPARAMS); return priv_init(hcd); @@ -743,8 +718,9 @@ static void qtd_free(struct isp1760_qtd *qtd) } static void start_bus_transfer(struct usb_hcd *hcd, u32 ptd_offset, int slot, - struct slotinfo *slots, struct isp1760_qtd *qtd, - struct isp1760_qh *qh, struct ptd *ptd) + struct isp1760_slotinfo *slots, + struct isp1760_qtd *qtd, struct isp1760_qh *qh, + struct ptd *ptd) { struct isp1760_hcd *priv = hcd_to_priv(hcd); int skip_map; @@ -857,7 +833,7 @@ static void enqueue_qtds(struct usb_hcd *hcd, struct isp1760_qh *qh) { struct isp1760_hcd *priv = hcd_to_priv(hcd); int ptd_offset; - struct slotinfo *slots; + struct isp1760_slotinfo *slots; int curr_slot, free_slot; int n; struct ptd ptd; @@ -1097,7 +1073,7 @@ static void handle_done_ptds(struct usb_hcd *hcd) struct isp1760_qh *qh; int slot; int state; - struct slotinfo *slots; + struct isp1760_slotinfo *slots; u32 ptd_offset; struct isp1760_qtd *qtd; int modified; @@ -2161,7 +2137,7 @@ static void isp1760_clear_tt_buffer_complete(struct usb_hcd *hcd, static const struct hc_driver isp1760_hc_driver = { .description = "isp1760-hcd", .product_desc = "NXP ISP1760 USB Host Controller", - .hcd_priv_size = sizeof(struct isp1760_hcd), + .hcd_priv_size = sizeof(struct isp1760_hcd *), .irq = isp1760_irq, .flags = HCD_MEMORY | HCD_USB2, .reset = isp1760_hc_setup, @@ -2177,7 +2153,7 @@ static const struct hc_driver isp1760_hc_driver = { .clear_tt_buffer_complete = isp1760_clear_tt_buffer_complete, }; -int __init init_kmem_once(void) +int __init isp1760_init_kmem_once(void) { urb_listitem_cachep = kmem_cache_create("isp1760_urb_listitem", sizeof(struct urb_listitem), 0, SLAB_TEMPORARY | @@ -2204,66 +2180,56 @@ int __init init_kmem_once(void) return 0; } -void deinit_kmem_cache(void) +void isp1760_deinit_kmem_cache(void) { kmem_cache_destroy(qtd_cachep); kmem_cache_destroy(qh_cachep); kmem_cache_destroy(urb_listitem_cachep); } -struct usb_hcd *isp1760_register(phys_addr_t res_start, resource_size_t res_len, - int irq, unsigned long irqflags, - int rst_gpio, - struct device *dev, const char *busname, - unsigned int devflags) +int isp1760_hcd_register(struct isp1760_hcd *priv, void __iomem *regs, + struct resource *mem, int irq, unsigned long irqflags, + struct device *dev) { struct usb_hcd *hcd; - struct isp1760_hcd *priv; int ret; - if (usb_disabled()) - return ERR_PTR(-ENODEV); - - /* prevent usb-core allocating DMA pages */ - dev->dma_mask = NULL; - hcd = usb_create_hcd(&isp1760_hc_driver, dev, dev_name(dev)); if (!hcd) - return ERR_PTR(-ENOMEM); + return -ENOMEM; + + *(struct isp1760_hcd **)hcd->hcd_priv = priv; + + priv->hcd = hcd; - priv = hcd_to_priv(hcd); - priv->devflags = devflags; - priv->rst_gpio = rst_gpio; init_memory(priv); - hcd->regs = ioremap(res_start, res_len); - if (!hcd->regs) { - ret = -EIO; - goto err_put; - } hcd->irq = irq; - hcd->rsrc_start = res_start; - hcd->rsrc_len = res_len; + hcd->regs = regs; + hcd->rsrc_start = mem->start; + hcd->rsrc_len = resource_size(mem); /* This driver doesn't support wakeup requests */ hcd->cant_recv_wakeups = 1; ret = usb_add_hcd(hcd, irq, irqflags); if (ret) - goto err_unmap; + goto error; + device_wakeup_enable(hcd->self.controller); - return hcd; + return 0; -err_unmap: - iounmap(hcd->regs); +error: + usb_put_hcd(hcd); + return ret; +} -err_put: - usb_put_hcd(hcd); +void isp1760_hcd_unregister(struct isp1760_hcd *priv) +{ + if (!priv->hcd) + return; - return ERR_PTR(ret); + usb_remove_hcd(priv->hcd); + usb_put_hcd(priv->hcd); } - -MODULE_DESCRIPTION("Driver for the ISP1760 USB-controller from NXP"); -MODULE_AUTHOR("Sebastian Siewior <bigeasy@linuxtronix.de>"); -MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/isp1760/isp1760-hcd.h b/drivers/usb/isp1760/isp1760-hcd.h new file mode 100644 index 000000000000..0c1c98d6ea08 --- /dev/null +++ b/drivers/usb/isp1760/isp1760-hcd.h @@ -0,0 +1,102 @@ +#ifndef _ISP1760_HCD_H_ +#define _ISP1760_HCD_H_ + +#include <linux/spinlock.h> + +struct isp1760_qh; +struct isp1760_qtd; +struct resource; +struct usb_hcd; + +/* + * 60kb divided in: + * - 32 blocks @ 256 bytes + * - 20 blocks @ 1024 bytes + * - 4 blocks @ 8192 bytes + */ + +#define BLOCK_1_NUM 32 +#define BLOCK_2_NUM 20 +#define BLOCK_3_NUM 4 + +#define BLOCK_1_SIZE 256 +#define BLOCK_2_SIZE 1024 +#define BLOCK_3_SIZE 8192 +#define BLOCKS (BLOCK_1_NUM + BLOCK_2_NUM + BLOCK_3_NUM) +#define MAX_PAYLOAD_SIZE BLOCK_3_SIZE +#define PAYLOAD_AREA_SIZE 0xf000 + +struct isp1760_slotinfo { + struct isp1760_qh *qh; + struct isp1760_qtd *qtd; + unsigned long timestamp; +}; + +/* chip memory management */ +struct isp1760_memory_chunk { + unsigned int start; + unsigned int size; + unsigned int free; +}; + +enum isp1760_queue_head_types { + QH_CONTROL, + QH_BULK, + QH_INTERRUPT, + QH_END +}; + +struct isp1760_hcd { +#ifdef CONFIG_USB_ISP1760_HCD + struct usb_hcd *hcd; + + u32 hcs_params; + spinlock_t lock; + struct isp1760_slotinfo atl_slots[32]; + int atl_done_map; + struct isp1760_slotinfo int_slots[32]; + int int_done_map; + struct isp1760_memory_chunk memory_pool[BLOCKS]; + struct list_head qh_list[QH_END]; + + /* periodic schedule support */ +#define DEFAULT_I_TDPS 1024 + unsigned periodic_size; + unsigned i_thresh; + unsigned long reset_done; + unsigned long next_statechange; +#endif +}; + +#ifdef CONFIG_USB_ISP1760_HCD +int isp1760_hcd_register(struct isp1760_hcd *priv, void __iomem *regs, + struct resource *mem, int irq, unsigned long irqflags, + struct device *dev); +void isp1760_hcd_unregister(struct isp1760_hcd *priv); + +int isp1760_init_kmem_once(void); +void isp1760_deinit_kmem_cache(void); +#else +static inline int isp1760_hcd_register(struct isp1760_hcd *priv, + void __iomem *regs, struct resource *mem, + int irq, unsigned long irqflags, + struct device *dev) +{ + return 0; +} + +static inline void isp1760_hcd_unregister(struct isp1760_hcd *priv) +{ +} + +static inline int isp1760_init_kmem_once(void) +{ + return 0; +} + +static inline void isp1760_deinit_kmem_cache(void) +{ +} +#endif + +#endif /* _ISP1760_HCD_H_ */ diff --git a/drivers/usb/isp1760/isp1760-if.c b/drivers/usb/isp1760/isp1760-if.c new file mode 100644 index 000000000000..264be4d21706 --- /dev/null +++ b/drivers/usb/isp1760/isp1760-if.c @@ -0,0 +1,309 @@ +/* + * Glue code for the ISP1760 driver and bus + * Currently there is support for + * - OpenFirmware + * - PCI + * - PDEV (generic platform device centralized driver model) + * + * (c) 2007 Sebastian Siewior <bigeasy@linutronix.de> + * + */ + +#include <linux/usb.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/usb/isp1760.h> +#include <linux/usb/hcd.h> + +#include "isp1760-core.h" +#include "isp1760-regs.h" + +#ifdef CONFIG_PCI +#include <linux/pci.h> +#endif + +#ifdef CONFIG_PCI +static int isp1761_pci_init(struct pci_dev *dev) +{ + resource_size_t mem_start; + resource_size_t mem_length; + u8 __iomem *iobase; + u8 latency, limit; + int retry_count; + u32 reg_data; + + /* Grab the PLX PCI shared memory of the ISP 1761 we need */ + mem_start = pci_resource_start(dev, 3); + mem_length = pci_resource_len(dev, 3); + if (mem_length < 0xffff) { + printk(KERN_ERR "memory length for this resource is wrong\n"); + return -ENOMEM; + } + + if (!request_mem_region(mem_start, mem_length, "ISP-PCI")) { + printk(KERN_ERR "host controller already in use\n"); + return -EBUSY; + } + + /* map available memory */ + iobase = ioremap_nocache(mem_start, mem_length); + if (!iobase) { + printk(KERN_ERR "Error ioremap failed\n"); + release_mem_region(mem_start, mem_length); + return -ENOMEM; + } + + /* bad pci latencies can contribute to overruns */ + pci_read_config_byte(dev, PCI_LATENCY_TIMER, &latency); + if (latency) { + pci_read_config_byte(dev, PCI_MAX_LAT, &limit); + if (limit && limit < latency) + pci_write_config_byte(dev, PCI_LATENCY_TIMER, limit); + } + + /* Try to check whether we can access Scratch Register of + * Host Controller or not. The initial PCI access is retried until + * local init for the PCI bridge is completed + */ + retry_count = 20; + reg_data = 0; + while ((reg_data != 0xFACE) && retry_count) { + /*by default host is in 16bit mode, so + * io operations at this stage must be 16 bit + * */ + writel(0xface, iobase + HC_SCRATCH_REG); + udelay(100); + reg_data = readl(iobase + HC_SCRATCH_REG) & 0x0000ffff; + retry_count--; + } + + iounmap(iobase); + release_mem_region(mem_start, mem_length); + + /* Host Controller presence is detected by writing to scratch register + * and reading back and checking the contents are same or not + */ + if (reg_data != 0xFACE) { + dev_err(&dev->dev, "scratch register mismatch %x\n", reg_data); + return -ENOMEM; + } + + /* Grab the PLX PCI mem maped port start address we need */ + mem_start = pci_resource_start(dev, 0); + mem_length = pci_resource_len(dev, 0); + + if (!request_mem_region(mem_start, mem_length, "ISP1761 IO MEM")) { + printk(KERN_ERR "request region #1\n"); + return -EBUSY; + } + + iobase = ioremap_nocache(mem_start, mem_length); + if (!iobase) { + printk(KERN_ERR "ioremap #1\n"); + release_mem_region(mem_start, mem_length); + return -ENOMEM; + } + + /* configure PLX PCI chip to pass interrupts */ +#define PLX_INT_CSR_REG 0x68 + reg_data = readl(iobase + PLX_INT_CSR_REG); + reg_data |= 0x900; + writel(reg_data, iobase + PLX_INT_CSR_REG); + + /* done with PLX IO access */ + iounmap(iobase); + release_mem_region(mem_start, mem_length); + + return 0; +} + +static int isp1761_pci_probe(struct pci_dev *dev, + const struct pci_device_id *id) +{ + unsigned int devflags = 0; + int ret; + + if (!dev->irq) + return -ENODEV; + + if (pci_enable_device(dev) < 0) + return -ENODEV; + + ret = isp1761_pci_init(dev); + if (ret < 0) + goto error; + + pci_set_master(dev); + + dev->dev.dma_mask = NULL; + ret = isp1760_register(&dev->resource[3], dev->irq, 0, &dev->dev, + devflags); + if (ret < 0) + goto error; + + return 0; + +error: + pci_disable_device(dev); + return ret; +} + +static void isp1761_pci_remove(struct pci_dev *dev) +{ + isp1760_unregister(&dev->dev); + + pci_disable_device(dev); +} + +static void isp1761_pci_shutdown(struct pci_dev *dev) +{ + printk(KERN_ERR "ips1761_pci_shutdown\n"); +} + +static const struct pci_device_id isp1760_plx [] = { + { + .class = PCI_CLASS_BRIDGE_OTHER << 8, + .class_mask = ~0, + .vendor = PCI_VENDOR_ID_PLX, + .device = 0x5406, + .subvendor = PCI_VENDOR_ID_PLX, + .subdevice = 0x9054, + }, + { } +}; +MODULE_DEVICE_TABLE(pci, isp1760_plx); + +static struct pci_driver isp1761_pci_driver = { + .name = "isp1760", + .id_table = isp1760_plx, + .probe = isp1761_pci_probe, + .remove = isp1761_pci_remove, + .shutdown = isp1761_pci_shutdown, +}; +#endif + +static int isp1760_plat_probe(struct platform_device *pdev) +{ + unsigned long irqflags; + unsigned int devflags = 0; + struct resource *mem_res; + struct resource *irq_res; + int ret; + + mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!irq_res) { + pr_warning("isp1760: IRQ resource not available\n"); + return -ENODEV; + } + irqflags = irq_res->flags & IRQF_TRIGGER_MASK; + + if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) { + struct device_node *dp = pdev->dev.of_node; + u32 bus_width = 0; + + if (of_device_is_compatible(dp, "nxp,usb-isp1761")) + devflags |= ISP1760_FLAG_ISP1761; + + /* Some systems wire up only 16 of the 32 data lines */ + of_property_read_u32(dp, "bus-width", &bus_width); + if (bus_width == 16) + devflags |= ISP1760_FLAG_BUS_WIDTH_16; + + if (of_property_read_bool(dp, "port1-otg")) + devflags |= ISP1760_FLAG_OTG_EN; + + if (of_property_read_bool(dp, "analog-oc")) + devflags |= ISP1760_FLAG_ANALOG_OC; + + if (of_property_read_bool(dp, "dack-polarity")) + devflags |= ISP1760_FLAG_DACK_POL_HIGH; + + if (of_property_read_bool(dp, "dreq-polarity")) + devflags |= ISP1760_FLAG_DREQ_POL_HIGH; + } else if (dev_get_platdata(&pdev->dev)) { + struct isp1760_platform_data *pdata = + dev_get_platdata(&pdev->dev); + + if (pdata->is_isp1761) + devflags |= ISP1760_FLAG_ISP1761; + if (pdata->bus_width_16) + devflags |= ISP1760_FLAG_BUS_WIDTH_16; + if (pdata->port1_otg) + devflags |= ISP1760_FLAG_OTG_EN; + if (pdata->analog_oc) + devflags |= ISP1760_FLAG_ANALOG_OC; + if (pdata->dack_polarity_high) + devflags |= ISP1760_FLAG_DACK_POL_HIGH; + if (pdata->dreq_polarity_high) + devflags |= ISP1760_FLAG_DREQ_POL_HIGH; + } + + ret = isp1760_register(mem_res, irq_res->start, irqflags, &pdev->dev, + devflags); + if (ret < 0) + return ret; + + pr_info("ISP1760 USB device initialised\n"); + return 0; +} + +static int isp1760_plat_remove(struct platform_device *pdev) +{ + isp1760_unregister(&pdev->dev); + + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id isp1760_of_match[] = { + { .compatible = "nxp,usb-isp1760", }, + { .compatible = "nxp,usb-isp1761", }, + { }, +}; +MODULE_DEVICE_TABLE(of, isp1760_of_match); +#endif + +static struct platform_driver isp1760_plat_driver = { + .probe = isp1760_plat_probe, + .remove = isp1760_plat_remove, + .driver = { + .name = "isp1760", + .of_match_table = of_match_ptr(isp1760_of_match), + }, +}; + +static int __init isp1760_init(void) +{ + int ret, any_ret = -ENODEV; + + isp1760_init_kmem_once(); + + ret = platform_driver_register(&isp1760_plat_driver); + if (!ret) + any_ret = 0; +#ifdef CONFIG_PCI + ret = pci_register_driver(&isp1761_pci_driver); + if (!ret) + any_ret = 0; +#endif + + if (any_ret) + isp1760_deinit_kmem_cache(); + return any_ret; +} +module_init(isp1760_init); + +static void __exit isp1760_exit(void) +{ + platform_driver_unregister(&isp1760_plat_driver); +#ifdef CONFIG_PCI + pci_unregister_driver(&isp1761_pci_driver); +#endif + isp1760_deinit_kmem_cache(); +} +module_exit(isp1760_exit); diff --git a/drivers/usb/isp1760/isp1760-regs.h b/drivers/usb/isp1760/isp1760-regs.h new file mode 100644 index 000000000000..b67095c9a9d4 --- /dev/null +++ b/drivers/usb/isp1760/isp1760-regs.h @@ -0,0 +1,230 @@ +/* + * Driver for the NXP ISP1760 chip + * + * Copyright 2014 Laurent Pinchart + * Copyright 2007 Sebastian Siewior + * + * Contacts: + * Sebastian Siewior <bigeasy@linutronix.de> + * Laurent Pinchart <laurent.pinchart@ideasonboard.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + */ + +#ifndef _ISP1760_REGS_H_ +#define _ISP1760_REGS_H_ + +/* ----------------------------------------------------------------------------- + * Host Controller + */ + +/* EHCI capability registers */ +#define HC_CAPLENGTH 0x000 +#define HC_LENGTH(p) (((p) >> 00) & 0x00ff) /* bits 7:0 */ +#define HC_VERSION(p) (((p) >> 16) & 0xffff) /* bits 31:16 */ + +#define HC_HCSPARAMS 0x004 +#define HCS_INDICATOR(p) ((p) & (1 << 16)) /* true: has port indicators */ +#define HCS_PPC(p) ((p) & (1 << 4)) /* true: port power control */ +#define HCS_N_PORTS(p) (((p) >> 0) & 0xf) /* bits 3:0, ports on HC */ + +#define HC_HCCPARAMS 0x008 +#define HCC_ISOC_CACHE(p) ((p) & (1 << 7)) /* true: can cache isoc frame */ +#define HCC_ISOC_THRES(p) (((p) >> 4) & 0x7) /* bits 6:4, uframes cached */ + +/* EHCI operational registers */ +#define HC_USBCMD 0x020 +#define CMD_LRESET (1 << 7) /* partial reset (no ports, etc) */ +#define CMD_RESET (1 << 1) /* reset HC not bus */ +#define CMD_RUN (1 << 0) /* start/stop HC */ + +#define HC_USBSTS 0x024 +#define STS_PCD (1 << 2) /* port change detect */ + +#define HC_FRINDEX 0x02c + +#define HC_CONFIGFLAG 0x060 +#define FLAG_CF (1 << 0) /* true: we'll support "high speed" */ + +#define HC_PORTSC1 0x064 +#define PORT_OWNER (1 << 13) /* true: companion hc owns this port */ +#define PORT_POWER (1 << 12) /* true: has power (see PPC) */ +#define PORT_USB11(x) (((x) & (3 << 10)) == (1 << 10)) /* USB 1.1 device */ +#define PORT_RESET (1 << 8) /* reset port */ +#define PORT_SUSPEND (1 << 7) /* suspend port */ +#define PORT_RESUME (1 << 6) /* resume it */ +#define PORT_PE (1 << 2) /* port enable */ +#define PORT_CSC (1 << 1) /* connect status change */ +#define PORT_CONNECT (1 << 0) /* device connected */ +#define PORT_RWC_BITS (PORT_CSC) + +#define HC_ISO_PTD_DONEMAP_REG 0x130 +#define HC_ISO_PTD_SKIPMAP_REG 0x134 +#define HC_ISO_PTD_LASTPTD_REG 0x138 +#define HC_INT_PTD_DONEMAP_REG 0x140 +#define HC_INT_PTD_SKIPMAP_REG 0x144 +#define HC_INT_PTD_LASTPTD_REG 0x148 +#define HC_ATL_PTD_DONEMAP_REG 0x150 +#define HC_ATL_PTD_SKIPMAP_REG 0x154 +#define HC_ATL_PTD_LASTPTD_REG 0x158 + +/* Configuration Register */ +#define HC_HW_MODE_CTRL 0x300 +#define ALL_ATX_RESET (1 << 31) +#define HW_ANA_DIGI_OC (1 << 15) +#define HW_DEV_DMA (1 << 11) +#define HW_COMN_IRQ (1 << 10) +#define HW_COMN_DMA (1 << 9) +#define HW_DATA_BUS_32BIT (1 << 8) +#define HW_DACK_POL_HIGH (1 << 6) +#define HW_DREQ_POL_HIGH (1 << 5) +#define HW_INTR_HIGH_ACT (1 << 2) +#define HW_INTR_EDGE_TRIG (1 << 1) +#define HW_GLOBAL_INTR_EN (1 << 0) + +#define HC_CHIP_ID_REG 0x304 +#define HC_SCRATCH_REG 0x308 + +#define HC_RESET_REG 0x30c +#define SW_RESET_RESET_HC (1 << 1) +#define SW_RESET_RESET_ALL (1 << 0) + +#define HC_BUFFER_STATUS_REG 0x334 +#define ISO_BUF_FILL (1 << 2) +#define INT_BUF_FILL (1 << 1) +#define ATL_BUF_FILL (1 << 0) + +#define HC_MEMORY_REG 0x33c +#define ISP_BANK(x) ((x) << 16) + +#define HC_PORT1_CTRL 0x374 +#define PORT1_POWER (3 << 3) +#define PORT1_INIT1 (1 << 7) +#define PORT1_INIT2 (1 << 23) +#define HW_OTG_CTRL_SET 0x374 +#define HW_OTG_CTRL_CLR 0x376 +#define HW_OTG_DISABLE (1 << 10) +#define HW_OTG_SE0_EN (1 << 9) +#define HW_BDIS_ACON_EN (1 << 8) +#define HW_SW_SEL_HC_DC (1 << 7) +#define HW_VBUS_CHRG (1 << 6) +#define HW_VBUS_DISCHRG (1 << 5) +#define HW_VBUS_DRV (1 << 4) +#define HW_SEL_CP_EXT (1 << 3) +#define HW_DM_PULLDOWN (1 << 2) +#define HW_DP_PULLDOWN (1 << 1) +#define HW_DP_PULLUP (1 << 0) + +/* Interrupt Register */ +#define HC_INTERRUPT_REG 0x310 + +#define HC_INTERRUPT_ENABLE 0x314 +#define HC_ISO_INT (1 << 9) +#define HC_ATL_INT (1 << 8) +#define HC_INTL_INT (1 << 7) +#define HC_EOT_INT (1 << 3) +#define HC_SOT_INT (1 << 1) +#define INTERRUPT_ENABLE_MASK (HC_INTL_INT | HC_ATL_INT) + +#define HC_ISO_IRQ_MASK_OR_REG 0x318 +#define HC_INT_IRQ_MASK_OR_REG 0x31c +#define HC_ATL_IRQ_MASK_OR_REG 0x320 +#define HC_ISO_IRQ_MASK_AND_REG 0x324 +#define HC_INT_IRQ_MASK_AND_REG 0x328 +#define HC_ATL_IRQ_MASK_AND_REG 0x32c + +/* ----------------------------------------------------------------------------- + * Peripheral Controller + */ + +/* Initialization Registers */ +#define DC_ADDRESS 0x0200 +#define DC_DEVEN (1 << 7) + +#define DC_MODE 0x020c +#define DC_DMACLKON (1 << 9) +#define DC_VBUSSTAT (1 << 8) +#define DC_CLKAON (1 << 7) +#define DC_SNDRSU (1 << 6) +#define DC_GOSUSP (1 << 5) +#define DC_SFRESET (1 << 4) +#define DC_GLINTENA (1 << 3) +#define DC_WKUPCS (1 << 2) + +#define DC_INTCONF 0x0210 +#define DC_CDBGMOD_ACK_NAK (0 << 6) +#define DC_CDBGMOD_ACK (1 << 6) +#define DC_CDBGMOD_ACK_1NAK (2 << 6) +#define DC_DDBGMODIN_ACK_NAK (0 << 4) +#define DC_DDBGMODIN_ACK (1 << 4) +#define DC_DDBGMODIN_ACK_1NAK (2 << 4) +#define DC_DDBGMODOUT_ACK_NYET_NAK (0 << 2) +#define DC_DDBGMODOUT_ACK_NYET (1 << 2) +#define DC_DDBGMODOUT_ACK_NYET_1NAK (2 << 2) +#define DC_INTLVL (1 << 1) +#define DC_INTPOL (1 << 0) + +#define DC_DEBUG 0x0212 +#define DC_INTENABLE 0x0214 +#define DC_IEPTX(n) (1 << (11 + 2 * (n))) +#define DC_IEPRX(n) (1 << (10 + 2 * (n))) +#define DC_IEPRXTX(n) (3 << (10 + 2 * (n))) +#define DC_IEP0SETUP (1 << 8) +#define DC_IEVBUS (1 << 7) +#define DC_IEDMA (1 << 6) +#define DC_IEHS_STA (1 << 5) +#define DC_IERESM (1 << 4) +#define DC_IESUSP (1 << 3) +#define DC_IEPSOF (1 << 2) +#define DC_IESOF (1 << 1) +#define DC_IEBRST (1 << 0) + +/* Data Flow Registers */ +#define DC_EPINDEX 0x022c +#define DC_EP0SETUP (1 << 5) +#define DC_ENDPIDX(n) ((n) << 1) +#define DC_EPDIR (1 << 0) + +#define DC_CTRLFUNC 0x0228 +#define DC_CLBUF (1 << 4) +#define DC_VENDP (1 << 3) +#define DC_DSEN (1 << 2) +#define DC_STATUS (1 << 1) +#define DC_STALL (1 << 0) + +#define DC_DATAPORT 0x0220 +#define DC_BUFLEN 0x021c +#define DC_DATACOUNT_MASK 0xffff +#define DC_BUFSTAT 0x021e +#define DC_EPMAXPKTSZ 0x0204 + +#define DC_EPTYPE 0x0208 +#define DC_NOEMPKT (1 << 4) +#define DC_EPENABLE (1 << 3) +#define DC_DBLBUF (1 << 2) +#define DC_ENDPTYP_ISOC (1 << 0) +#define DC_ENDPTYP_BULK (2 << 0) +#define DC_ENDPTYP_INTERRUPT (3 << 0) + +/* DMA Registers */ +#define DC_DMACMD 0x0230 +#define DC_DMATXCOUNT 0x0234 +#define DC_DMACONF 0x0238 +#define DC_DMAHW 0x023c +#define DC_DMAINTREASON 0x0250 +#define DC_DMAINTEN 0x0254 +#define DC_DMAEP 0x0258 +#define DC_DMABURSTCOUNT 0x0264 + +/* General Registers */ +#define DC_INTERRUPT 0x0218 +#define DC_CHIPID 0x0270 +#define DC_FRAMENUM 0x0274 +#define DC_SCRATCH 0x0278 +#define DC_UNLOCKDEV 0x027c +#define DC_INTPULSEWIDTH 0x0280 +#define DC_TESTMODE 0x0284 + +#endif diff --git a/drivers/usb/isp1760/isp1760-udc.c b/drivers/usb/isp1760/isp1760-udc.c new file mode 100644 index 000000000000..9612d7990565 --- /dev/null +++ b/drivers/usb/isp1760/isp1760-udc.c @@ -0,0 +1,1498 @@ +/* + * Driver for the NXP ISP1761 device controller + * + * Copyright 2014 Ideas on Board Oy + * + * Contacts: + * Laurent Pinchart <laurent.pinchart@ideasonboard.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + */ + +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/timer.h> +#include <linux/usb.h> + +#include "isp1760-core.h" +#include "isp1760-regs.h" +#include "isp1760-udc.h" + +#define ISP1760_VBUS_POLL_INTERVAL msecs_to_jiffies(500) + +struct isp1760_request { + struct usb_request req; + struct list_head queue; + struct isp1760_ep *ep; + unsigned int packet_size; +}; + +static inline struct isp1760_udc *gadget_to_udc(struct usb_gadget *gadget) +{ + return container_of(gadget, struct isp1760_udc, gadget); +} + +static inline struct isp1760_ep *ep_to_udc_ep(struct usb_ep *ep) +{ + return container_of(ep, struct isp1760_ep, ep); +} + +static inline struct isp1760_request *req_to_udc_req(struct usb_request *req) +{ + return container_of(req, struct isp1760_request, req); +} + +static inline u32 isp1760_udc_read(struct isp1760_udc *udc, u16 reg) +{ + return isp1760_read32(udc->regs, reg); +} + +static inline void isp1760_udc_write(struct isp1760_udc *udc, u16 reg, u32 val) +{ + isp1760_write32(udc->regs, reg, val); +} + +/* ----------------------------------------------------------------------------- + * Endpoint Management + */ + +static struct isp1760_ep *isp1760_udc_find_ep(struct isp1760_udc *udc, + u16 index) +{ + unsigned int i; + + if (index == 0) + return &udc->ep[0]; + + for (i = 1; i < ARRAY_SIZE(udc->ep); ++i) { + if (udc->ep[i].addr == index) + return udc->ep[i].desc ? &udc->ep[i] : NULL; + } + + return NULL; +} + +static void __isp1760_udc_select_ep(struct isp1760_ep *ep, int dir) +{ + isp1760_udc_write(ep->udc, DC_EPINDEX, + DC_ENDPIDX(ep->addr & USB_ENDPOINT_NUMBER_MASK) | + (dir == USB_DIR_IN ? DC_EPDIR : 0)); +} + +/** + * isp1760_udc_select_ep - Select an endpoint for register access + * @ep: The endpoint + * + * The ISP1761 endpoint registers are banked. This function selects the target + * endpoint for banked register access. The selection remains valid until the + * next call to this function, the next direct access to the EPINDEX register + * or the next reset, whichever comes first. + * + * Called with the UDC spinlock held. + */ +static void isp1760_udc_select_ep(struct isp1760_ep *ep) +{ + __isp1760_udc_select_ep(ep, ep->addr & USB_ENDPOINT_DIR_MASK); +} + +/* Called with the UDC spinlock held. */ +static void isp1760_udc_ctrl_send_status(struct isp1760_ep *ep, int dir) +{ + struct isp1760_udc *udc = ep->udc; + + /* + * Proceed to the status stage. The status stage data packet flows in + * the direction opposite to the data stage data packets, we thus need + * to select the OUT/IN endpoint for IN/OUT transfers. + */ + isp1760_udc_write(udc, DC_EPINDEX, DC_ENDPIDX(0) | + (dir == USB_DIR_IN ? 0 : DC_EPDIR)); + isp1760_udc_write(udc, DC_CTRLFUNC, DC_STATUS); + + /* + * The hardware will terminate the request automatically and go back to + * the setup stage without notifying us. + */ + udc->ep0_state = ISP1760_CTRL_SETUP; +} + +/* Called without the UDC spinlock held. */ +static void isp1760_udc_request_complete(struct isp1760_ep *ep, + struct isp1760_request *req, + int status) +{ + struct isp1760_udc *udc = ep->udc; + unsigned long flags; + + dev_dbg(ep->udc->isp->dev, "completing request %p with status %d\n", + req, status); + + req->ep = NULL; + req->req.status = status; + req->req.complete(&ep->ep, &req->req); + + spin_lock_irqsave(&udc->lock, flags); + + /* + * When completing control OUT requests, move to the status stage after + * calling the request complete callback. This gives the gadget an + * opportunity to stall the control transfer if needed. + */ + if (status == 0 && ep->addr == 0 && udc->ep0_dir == USB_DIR_OUT) + isp1760_udc_ctrl_send_status(ep, USB_DIR_OUT); + + spin_unlock_irqrestore(&udc->lock, flags); +} + +static void isp1760_udc_ctrl_send_stall(struct isp1760_ep *ep) +{ + struct isp1760_udc *udc = ep->udc; + unsigned long flags; + + dev_dbg(ep->udc->isp->dev, "%s(ep%02x)\n", __func__, ep->addr); + + spin_lock_irqsave(&udc->lock, flags); + + /* Stall both the IN and OUT endpoints. */ + __isp1760_udc_select_ep(ep, USB_DIR_OUT); + isp1760_udc_write(udc, DC_CTRLFUNC, DC_STALL); + __isp1760_udc_select_ep(ep, USB_DIR_IN); + isp1760_udc_write(udc, DC_CTRLFUNC, DC_STALL); + + /* A protocol stall completes the control transaction. */ + udc->ep0_state = ISP1760_CTRL_SETUP; + + spin_unlock_irqrestore(&udc->lock, flags); +} + +/* ----------------------------------------------------------------------------- + * Data Endpoints + */ + +/* Called with the UDC spinlock held. */ +static bool isp1760_udc_receive(struct isp1760_ep *ep, + struct isp1760_request *req) +{ + struct isp1760_udc *udc = ep->udc; + unsigned int len; + u32 *buf; + int i; + + isp1760_udc_select_ep(ep); + len = isp1760_udc_read(udc, DC_BUFLEN) & DC_DATACOUNT_MASK; + + dev_dbg(udc->isp->dev, "%s: received %u bytes (%u/%u done)\n", + __func__, len, req->req.actual, req->req.length); + + len = min(len, req->req.length - req->req.actual); + + if (!len) { + /* + * There's no data to be read from the FIFO, acknowledge the RX + * interrupt by clearing the buffer. + * + * TODO: What if another packet arrives in the meantime ? The + * datasheet doesn't clearly document how this should be + * handled. + */ + isp1760_udc_write(udc, DC_CTRLFUNC, DC_CLBUF); + return false; + } + + buf = req->req.buf + req->req.actual; + + /* + * Make sure not to read more than one extra byte, otherwise data from + * the next packet might be removed from the FIFO. + */ + for (i = len; i > 2; i -= 4, ++buf) + *buf = le32_to_cpu(isp1760_udc_read(udc, DC_DATAPORT)); + if (i > 0) + *(u16 *)buf = le16_to_cpu(readw(udc->regs + DC_DATAPORT)); + + req->req.actual += len; + + /* + * TODO: The short_not_ok flag isn't supported yet, but isn't used by + * any gadget driver either. + */ + + dev_dbg(udc->isp->dev, + "%s: req %p actual/length %u/%u maxpacket %u packet size %u\n", + __func__, req, req->req.actual, req->req.length, ep->maxpacket, + len); + + ep->rx_pending = false; + + /* + * Complete the request if all data has been received or if a short + * packet has been received. + */ + if (req->req.actual == req->req.length || len < ep->maxpacket) { + list_del(&req->queue); + return true; + } + + return false; +} + +static void isp1760_udc_transmit(struct isp1760_ep *ep, + struct isp1760_request *req) +{ + struct isp1760_udc *udc = ep->udc; + u32 *buf = req->req.buf + req->req.actual; + int i; + + req->packet_size = min(req->req.length - req->req.actual, + ep->maxpacket); + + dev_dbg(udc->isp->dev, "%s: transferring %u bytes (%u/%u done)\n", + __func__, req->packet_size, req->req.actual, + req->req.length); + + __isp1760_udc_select_ep(ep, USB_DIR_IN); + + if (req->packet_size) + isp1760_udc_write(udc, DC_BUFLEN, req->packet_size); + + /* + * Make sure not to write more than one extra byte, otherwise extra data + * will stay in the FIFO and will be transmitted during the next control + * request. The endpoint control CLBUF bit is supposed to allow flushing + * the FIFO for this kind of conditions, but doesn't seem to work. + */ + for (i = req->packet_size; i > 2; i -= 4, ++buf) + isp1760_udc_write(udc, DC_DATAPORT, cpu_to_le32(*buf)); + if (i > 0) + writew(cpu_to_le16(*(u16 *)buf), udc->regs + DC_DATAPORT); + + if (ep->addr == 0) + isp1760_udc_write(udc, DC_CTRLFUNC, DC_DSEN); + if (!req->packet_size) + isp1760_udc_write(udc, DC_CTRLFUNC, DC_VENDP); +} + +static void isp1760_ep_rx_ready(struct isp1760_ep *ep) +{ + struct isp1760_udc *udc = ep->udc; + struct isp1760_request *req; + bool complete; + + spin_lock(&udc->lock); + + if (ep->addr == 0 && udc->ep0_state != ISP1760_CTRL_DATA_OUT) { + spin_unlock(&udc->lock); + dev_dbg(udc->isp->dev, "%s: invalid ep0 state %u\n", __func__, + udc->ep0_state); + return; + } + + if (ep->addr != 0 && !ep->desc) { + spin_unlock(&udc->lock); + dev_dbg(udc->isp->dev, "%s: ep%02x is disabled\n", __func__, + ep->addr); + return; + } + + if (list_empty(&ep->queue)) { + ep->rx_pending = true; + spin_unlock(&udc->lock); + dev_dbg(udc->isp->dev, "%s: ep%02x (%p) has no request queued\n", + __func__, ep->addr, ep); + return; + } + + req = list_first_entry(&ep->queue, struct isp1760_request, + queue); + complete = isp1760_udc_receive(ep, req); + + spin_unlock(&udc->lock); + + if (complete) + isp1760_udc_request_complete(ep, req, 0); +} + +static void isp1760_ep_tx_complete(struct isp1760_ep *ep) +{ + struct isp1760_udc *udc = ep->udc; + struct isp1760_request *complete = NULL; + struct isp1760_request *req; + bool need_zlp; + + spin_lock(&udc->lock); + + if (ep->addr == 0 && udc->ep0_state != ISP1760_CTRL_DATA_IN) { + spin_unlock(&udc->lock); + dev_dbg(udc->isp->dev, "TX IRQ: invalid endpoint state %u\n", + udc->ep0_state); + return; + } + + if (list_empty(&ep->queue)) { + /* + * This can happen for the control endpoint when the reply to + * the GET_STATUS IN control request is sent directly by the + * setup IRQ handler. Just proceed to the status stage. + */ + if (ep->addr == 0) { + isp1760_udc_ctrl_send_status(ep, USB_DIR_IN); + spin_unlock(&udc->lock); + return; + } + + spin_unlock(&udc->lock); + dev_dbg(udc->isp->dev, "%s: ep%02x has no request queued\n", + __func__, ep->addr); + return; + } + + req = list_first_entry(&ep->queue, struct isp1760_request, + queue); + req->req.actual += req->packet_size; + + need_zlp = req->req.actual == req->req.length && + !(req->req.length % ep->maxpacket) && + req->packet_size && req->req.zero; + + dev_dbg(udc->isp->dev, + "TX IRQ: req %p actual/length %u/%u maxpacket %u packet size %u zero %u need zlp %u\n", + req, req->req.actual, req->req.length, ep->maxpacket, + req->packet_size, req->req.zero, need_zlp); + + /* + * Complete the request if all data has been sent and we don't need to + * transmit a zero length packet. + */ + if (req->req.actual == req->req.length && !need_zlp) { + complete = req; + list_del(&req->queue); + + if (ep->addr == 0) + isp1760_udc_ctrl_send_status(ep, USB_DIR_IN); + + if (!list_empty(&ep->queue)) + req = list_first_entry(&ep->queue, + struct isp1760_request, queue); + else + req = NULL; + } + + /* + * Transmit the next packet or start the next request, if any. + * + * TODO: If the endpoint is stalled the next request shouldn't be + * started, but what about the next packet ? + */ + if (req) + isp1760_udc_transmit(ep, req); + + spin_unlock(&udc->lock); + + if (complete) + isp1760_udc_request_complete(ep, complete, 0); +} + +static int __isp1760_udc_set_halt(struct isp1760_ep *ep, bool halt) +{ + struct isp1760_udc *udc = ep->udc; + + dev_dbg(udc->isp->dev, "%s: %s halt on ep%02x\n", __func__, + halt ? "set" : "clear", ep->addr); + + if (ep->desc && usb_endpoint_xfer_isoc(ep->desc)) { + dev_dbg(udc->isp->dev, "%s: ep%02x is isochronous\n", __func__, + ep->addr); + return -EINVAL; + } + + isp1760_udc_select_ep(ep); + isp1760_udc_write(udc, DC_CTRLFUNC, halt ? DC_STALL : 0); + + if (ep->addr == 0) { + /* When halting the control endpoint, stall both IN and OUT. */ + __isp1760_udc_select_ep(ep, USB_DIR_IN); + isp1760_udc_write(udc, DC_CTRLFUNC, halt ? DC_STALL : 0); + } else if (!halt) { + /* Reset the data PID by cycling the endpoint enable bit. */ + u16 eptype = isp1760_udc_read(udc, DC_EPTYPE); + + isp1760_udc_write(udc, DC_EPTYPE, eptype & ~DC_EPENABLE); + isp1760_udc_write(udc, DC_EPTYPE, eptype); + + /* + * Disabling the endpoint emptied the transmit FIFO, fill it + * again if a request is pending. + * + * TODO: Does the gadget framework require synchronizatino with + * the TX IRQ handler ? + */ + if ((ep->addr & USB_DIR_IN) && !list_empty(&ep->queue)) { + struct isp1760_request *req; + + req = list_first_entry(&ep->queue, + struct isp1760_request, queue); + isp1760_udc_transmit(ep, req); + } + } + + ep->halted = halt; + + return 0; +} + +/* ----------------------------------------------------------------------------- + * Control Endpoint + */ + +static int isp1760_udc_get_status(struct isp1760_udc *udc, + const struct usb_ctrlrequest *req) +{ + struct isp1760_ep *ep; + u16 status; + + if (req->wLength != cpu_to_le16(2) || req->wValue != cpu_to_le16(0)) + return -EINVAL; + + switch (req->bRequestType) { + case USB_DIR_IN | USB_RECIP_DEVICE: + status = udc->devstatus; + break; + + case USB_DIR_IN | USB_RECIP_INTERFACE: + status = 0; + break; + + case USB_DIR_IN | USB_RECIP_ENDPOINT: + ep = isp1760_udc_find_ep(udc, le16_to_cpu(req->wIndex)); + if (!ep) + return -EINVAL; + + status = 0; + if (ep->halted) + status |= 1 << USB_ENDPOINT_HALT; + break; + + default: + return -EINVAL; + } + + isp1760_udc_write(udc, DC_EPINDEX, DC_ENDPIDX(0) | DC_EPDIR); + isp1760_udc_write(udc, DC_BUFLEN, 2); + + writew(cpu_to_le16(status), udc->regs + DC_DATAPORT); + + isp1760_udc_write(udc, DC_CTRLFUNC, DC_DSEN); + + dev_dbg(udc->isp->dev, "%s: status 0x%04x\n", __func__, status); + + return 0; +} + +static int isp1760_udc_set_address(struct isp1760_udc *udc, u16 addr) +{ + if (addr > 127) { + dev_dbg(udc->isp->dev, "invalid device address %u\n", addr); + return -EINVAL; + } + + if (udc->gadget.state != USB_STATE_DEFAULT && + udc->gadget.state != USB_STATE_ADDRESS) { + dev_dbg(udc->isp->dev, "can't set address in state %u\n", + udc->gadget.state); + return -EINVAL; + } + + usb_gadget_set_state(&udc->gadget, addr ? USB_STATE_ADDRESS : + USB_STATE_DEFAULT); + + isp1760_udc_write(udc, DC_ADDRESS, DC_DEVEN | addr); + + spin_lock(&udc->lock); + isp1760_udc_ctrl_send_status(&udc->ep[0], USB_DIR_OUT); + spin_unlock(&udc->lock); + + return 0; +} + +static bool isp1760_ep0_setup_standard(struct isp1760_udc *udc, + struct usb_ctrlrequest *req) +{ + bool stall; + + switch (req->bRequest) { + case USB_REQ_GET_STATUS: + return isp1760_udc_get_status(udc, req); + + case USB_REQ_CLEAR_FEATURE: + switch (req->bRequestType) { + case USB_DIR_OUT | USB_RECIP_DEVICE: { + /* TODO: Handle remote wakeup feature. */ + return true; + } + + case USB_DIR_OUT | USB_RECIP_ENDPOINT: { + u16 index = le16_to_cpu(req->wIndex); + struct isp1760_ep *ep; + + if (req->wLength != cpu_to_le16(0) || + req->wValue != cpu_to_le16(USB_ENDPOINT_HALT)) + return true; + + ep = isp1760_udc_find_ep(udc, index); + if (!ep) + return true; + + spin_lock(&udc->lock); + + /* + * If the endpoint is wedged only the gadget can clear + * the halt feature. Pretend success in that case, but + * keep the endpoint halted. + */ + if (!ep->wedged) + stall = __isp1760_udc_set_halt(ep, false); + else + stall = false; + + if (!stall) + isp1760_udc_ctrl_send_status(&udc->ep[0], + USB_DIR_OUT); + + spin_unlock(&udc->lock); + return stall; + } + + default: + return true; + } + break; + + case USB_REQ_SET_FEATURE: + switch (req->bRequestType) { + case USB_DIR_OUT | USB_RECIP_DEVICE: { + /* TODO: Handle remote wakeup and test mode features */ + return true; + } + + case USB_DIR_OUT | USB_RECIP_ENDPOINT: { + u16 index = le16_to_cpu(req->wIndex); + struct isp1760_ep *ep; + + if (req->wLength != cpu_to_le16(0) || + req->wValue != cpu_to_le16(USB_ENDPOINT_HALT)) + return true; + + ep = isp1760_udc_find_ep(udc, index); + if (!ep) + return true; + + spin_lock(&udc->lock); + + stall = __isp1760_udc_set_halt(ep, true); + if (!stall) + isp1760_udc_ctrl_send_status(&udc->ep[0], + USB_DIR_OUT); + + spin_unlock(&udc->lock); + return stall; + } + + default: + return true; + } + break; + + case USB_REQ_SET_ADDRESS: + if (req->bRequestType != (USB_DIR_OUT | USB_RECIP_DEVICE)) + return true; + + return isp1760_udc_set_address(udc, le16_to_cpu(req->wValue)); + + case USB_REQ_SET_CONFIGURATION: + if (req->bRequestType != (USB_DIR_OUT | USB_RECIP_DEVICE)) + return true; + + if (udc->gadget.state != USB_STATE_ADDRESS && + udc->gadget.state != USB_STATE_CONFIGURED) + return true; + + stall = udc->driver->setup(&udc->gadget, req) < 0; + if (stall) + return true; + + usb_gadget_set_state(&udc->gadget, req->wValue ? + USB_STATE_CONFIGURED : USB_STATE_ADDRESS); + + /* + * SET_CONFIGURATION (and SET_INTERFACE) must reset the halt + * feature on all endpoints. There is however no need to do so + * explicitly here as the gadget driver will disable and + * reenable endpoints, clearing the halt feature. + */ + return false; + + default: + return udc->driver->setup(&udc->gadget, req) < 0; + } +} + +static void isp1760_ep0_setup(struct isp1760_udc *udc) +{ + union { + struct usb_ctrlrequest r; + u32 data[2]; + } req; + unsigned int count; + bool stall = false; + + spin_lock(&udc->lock); + + isp1760_udc_write(udc, DC_EPINDEX, DC_EP0SETUP); + + count = isp1760_udc_read(udc, DC_BUFLEN) & DC_DATACOUNT_MASK; + if (count != sizeof(req)) { + spin_unlock(&udc->lock); + + dev_err(udc->isp->dev, "invalid length %u for setup packet\n", + count); + + isp1760_udc_ctrl_send_stall(&udc->ep[0]); + return; + } + + req.data[0] = isp1760_udc_read(udc, DC_DATAPORT); + req.data[1] = isp1760_udc_read(udc, DC_DATAPORT); + + if (udc->ep0_state != ISP1760_CTRL_SETUP) { + spin_unlock(&udc->lock); + dev_dbg(udc->isp->dev, "unexpected SETUP packet\n"); + return; + } + + /* Move to the data stage. */ + if (!req.r.wLength) + udc->ep0_state = ISP1760_CTRL_STATUS; + else if (req.r.bRequestType & USB_DIR_IN) + udc->ep0_state = ISP1760_CTRL_DATA_IN; + else + udc->ep0_state = ISP1760_CTRL_DATA_OUT; + + udc->ep0_dir = req.r.bRequestType & USB_DIR_IN; + udc->ep0_length = le16_to_cpu(req.r.wLength); + + spin_unlock(&udc->lock); + + dev_dbg(udc->isp->dev, + "%s: bRequestType 0x%02x bRequest 0x%02x wValue 0x%04x wIndex 0x%04x wLength 0x%04x\n", + __func__, req.r.bRequestType, req.r.bRequest, + le16_to_cpu(req.r.wValue), le16_to_cpu(req.r.wIndex), + le16_to_cpu(req.r.wLength)); + + if ((req.r.bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) + stall = isp1760_ep0_setup_standard(udc, &req.r); + else + stall = udc->driver->setup(&udc->gadget, &req.r) < 0; + + if (stall) + isp1760_udc_ctrl_send_stall(&udc->ep[0]); +} + +/* ----------------------------------------------------------------------------- + * Gadget Endpoint Operations + */ + +static int isp1760_ep_enable(struct usb_ep *ep, + const struct usb_endpoint_descriptor *desc) +{ + struct isp1760_ep *uep = ep_to_udc_ep(ep); + struct isp1760_udc *udc = uep->udc; + unsigned long flags; + unsigned int type; + + dev_dbg(uep->udc->isp->dev, "%s\n", __func__); + + /* + * Validate the descriptor. The control endpoint can't be enabled + * manually. + */ + if (desc->bDescriptorType != USB_DT_ENDPOINT || + desc->bEndpointAddress == 0 || + desc->bEndpointAddress != uep->addr || + le16_to_cpu(desc->wMaxPacketSize) > ep->maxpacket) { + dev_dbg(udc->isp->dev, + "%s: invalid descriptor type %u addr %02x ep addr %02x max packet size %u/%u\n", + __func__, desc->bDescriptorType, + desc->bEndpointAddress, uep->addr, + le16_to_cpu(desc->wMaxPacketSize), ep->maxpacket); + return -EINVAL; + } + + switch (usb_endpoint_type(desc)) { + case USB_ENDPOINT_XFER_ISOC: + type = DC_ENDPTYP_ISOC; + break; + case USB_ENDPOINT_XFER_BULK: + type = DC_ENDPTYP_BULK; + break; + case USB_ENDPOINT_XFER_INT: + type = DC_ENDPTYP_INTERRUPT; + break; + case USB_ENDPOINT_XFER_CONTROL: + default: + dev_dbg(udc->isp->dev, "%s: control endpoints unsupported\n", + __func__); + return -EINVAL; + } + + spin_lock_irqsave(&udc->lock, flags); + + uep->desc = desc; + uep->maxpacket = le16_to_cpu(desc->wMaxPacketSize); + uep->rx_pending = false; + uep->halted = false; + uep->wedged = false; + + isp1760_udc_select_ep(uep); + isp1760_udc_write(udc, DC_EPMAXPKTSZ, uep->maxpacket); + isp1760_udc_write(udc, DC_BUFLEN, uep->maxpacket); + isp1760_udc_write(udc, DC_EPTYPE, DC_EPENABLE | type); + + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +static int isp1760_ep_disable(struct usb_ep *ep) +{ + struct isp1760_ep *uep = ep_to_udc_ep(ep); + struct isp1760_udc *udc = uep->udc; + struct isp1760_request *req, *nreq; + LIST_HEAD(req_list); + unsigned long flags; + + dev_dbg(udc->isp->dev, "%s\n", __func__); + + spin_lock_irqsave(&udc->lock, flags); + + if (!uep->desc) { + dev_dbg(udc->isp->dev, "%s: endpoint not enabled\n", __func__); + spin_unlock_irqrestore(&udc->lock, flags); + return -EINVAL; + } + + uep->desc = NULL; + uep->maxpacket = 0; + + isp1760_udc_select_ep(uep); + isp1760_udc_write(udc, DC_EPTYPE, 0); + + /* TODO Synchronize with the IRQ handler */ + + list_splice_init(&uep->queue, &req_list); + + spin_unlock_irqrestore(&udc->lock, flags); + + list_for_each_entry_safe(req, nreq, &req_list, queue) { + list_del(&req->queue); + isp1760_udc_request_complete(uep, req, -ESHUTDOWN); + } + + return 0; +} + +static struct usb_request *isp1760_ep_alloc_request(struct usb_ep *ep, + gfp_t gfp_flags) +{ + struct isp1760_request *req; + + req = kzalloc(sizeof(*req), gfp_flags); + + return &req->req; +} + +static void isp1760_ep_free_request(struct usb_ep *ep, struct usb_request *_req) +{ + struct isp1760_request *req = req_to_udc_req(_req); + + kfree(req); +} + +static int isp1760_ep_queue(struct usb_ep *ep, struct usb_request *_req, + gfp_t gfp_flags) +{ + struct isp1760_request *req = req_to_udc_req(_req); + struct isp1760_ep *uep = ep_to_udc_ep(ep); + struct isp1760_udc *udc = uep->udc; + bool complete = false; + unsigned long flags; + int ret = 0; + + _req->status = -EINPROGRESS; + _req->actual = 0; + + spin_lock_irqsave(&udc->lock, flags); + + dev_dbg(udc->isp->dev, + "%s: req %p (%u bytes%s) ep %p(0x%02x)\n", __func__, _req, + _req->length, _req->zero ? " (zlp)" : "", uep, uep->addr); + + req->ep = uep; + + if (uep->addr == 0) { + if (_req->length != udc->ep0_length && + udc->ep0_state != ISP1760_CTRL_DATA_IN) { + dev_dbg(udc->isp->dev, + "%s: invalid length %u for req %p\n", + __func__, _req->length, req); + ret = -EINVAL; + goto done; + } + + switch (udc->ep0_state) { + case ISP1760_CTRL_DATA_IN: + dev_dbg(udc->isp->dev, "%s: transmitting req %p\n", + __func__, req); + + list_add_tail(&req->queue, &uep->queue); + isp1760_udc_transmit(uep, req); + break; + + case ISP1760_CTRL_DATA_OUT: + list_add_tail(&req->queue, &uep->queue); + __isp1760_udc_select_ep(uep, USB_DIR_OUT); + isp1760_udc_write(udc, DC_CTRLFUNC, DC_DSEN); + break; + + case ISP1760_CTRL_STATUS: + complete = true; + break; + + default: + dev_dbg(udc->isp->dev, "%s: invalid ep0 state\n", + __func__); + ret = -EINVAL; + break; + } + } else if (uep->desc) { + bool empty = list_empty(&uep->queue); + + list_add_tail(&req->queue, &uep->queue); + if ((uep->addr & USB_DIR_IN) && !uep->halted && empty) + isp1760_udc_transmit(uep, req); + else if (!(uep->addr & USB_DIR_IN) && uep->rx_pending) + complete = isp1760_udc_receive(uep, req); + } else { + dev_dbg(udc->isp->dev, + "%s: can't queue request to disabled ep%02x\n", + __func__, uep->addr); + ret = -ESHUTDOWN; + } + +done: + if (ret < 0) + req->ep = NULL; + + spin_unlock_irqrestore(&udc->lock, flags); + + if (complete) + isp1760_udc_request_complete(uep, req, 0); + + return ret; +} + +static int isp1760_ep_dequeue(struct usb_ep *ep, struct usb_request *_req) +{ + struct isp1760_request *req = req_to_udc_req(_req); + struct isp1760_ep *uep = ep_to_udc_ep(ep); + struct isp1760_udc *udc = uep->udc; + unsigned long flags; + + dev_dbg(uep->udc->isp->dev, "%s(ep%02x)\n", __func__, uep->addr); + + spin_lock_irqsave(&udc->lock, flags); + + if (req->ep != uep) + req = NULL; + else + list_del(&req->queue); + + spin_unlock_irqrestore(&udc->lock, flags); + + if (!req) + return -EINVAL; + + isp1760_udc_request_complete(uep, req, -ECONNRESET); + return 0; +} + +static int __isp1760_ep_set_halt(struct isp1760_ep *uep, bool stall, bool wedge) +{ + struct isp1760_udc *udc = uep->udc; + int ret; + + if (!uep->addr) { + /* + * Halting the control endpoint is only valid as a delayed error + * response to a SETUP packet. Make sure EP0 is in the right + * stage and that the gadget isn't trying to clear the halt + * condition. + */ + if (WARN_ON(udc->ep0_state == ISP1760_CTRL_SETUP || !stall || + wedge)) { + return -EINVAL; + } + } + + if (uep->addr && !uep->desc) { + dev_dbg(udc->isp->dev, "%s: ep%02x is disabled\n", __func__, + uep->addr); + return -EINVAL; + } + + if (uep->addr & USB_DIR_IN) { + /* Refuse to halt IN endpoints with active transfers. */ + if (!list_empty(&uep->queue)) { + dev_dbg(udc->isp->dev, + "%s: ep%02x has request pending\n", __func__, + uep->addr); + return -EAGAIN; + } + } + + ret = __isp1760_udc_set_halt(uep, stall); + if (ret < 0) + return ret; + + if (!uep->addr) { + /* + * Stalling EP0 completes the control transaction, move back to + * the SETUP state. + */ + udc->ep0_state = ISP1760_CTRL_SETUP; + return 0; + } + + if (wedge) + uep->wedged = true; + else if (!stall) + uep->wedged = false; + + return 0; +} + +static int isp1760_ep_set_halt(struct usb_ep *ep, int value) +{ + struct isp1760_ep *uep = ep_to_udc_ep(ep); + unsigned long flags; + int ret; + + dev_dbg(uep->udc->isp->dev, "%s: %s halt on ep%02x\n", __func__, + value ? "set" : "clear", uep->addr); + + spin_lock_irqsave(&uep->udc->lock, flags); + ret = __isp1760_ep_set_halt(uep, value, false); + spin_unlock_irqrestore(&uep->udc->lock, flags); + + return ret; +} + +static int isp1760_ep_set_wedge(struct usb_ep *ep) +{ + struct isp1760_ep *uep = ep_to_udc_ep(ep); + unsigned long flags; + int ret; + + dev_dbg(uep->udc->isp->dev, "%s: set wedge on ep%02x)\n", __func__, + uep->addr); + + spin_lock_irqsave(&uep->udc->lock, flags); + ret = __isp1760_ep_set_halt(uep, true, true); + spin_unlock_irqrestore(&uep->udc->lock, flags); + + return ret; +} + +static void isp1760_ep_fifo_flush(struct usb_ep *ep) +{ + struct isp1760_ep *uep = ep_to_udc_ep(ep); + struct isp1760_udc *udc = uep->udc; + unsigned long flags; + + spin_lock_irqsave(&udc->lock, flags); + + isp1760_udc_select_ep(uep); + + /* + * Set the CLBUF bit twice to flush both buffers in case double + * buffering is enabled. + */ + isp1760_udc_write(udc, DC_CTRLFUNC, DC_CLBUF); + isp1760_udc_write(udc, DC_CTRLFUNC, DC_CLBUF); + + spin_unlock_irqrestore(&udc->lock, flags); +} + +static const struct usb_ep_ops isp1760_ep_ops = { + .enable = isp1760_ep_enable, + .disable = isp1760_ep_disable, + .alloc_request = isp1760_ep_alloc_request, + .free_request = isp1760_ep_free_request, + .queue = isp1760_ep_queue, + .dequeue = isp1760_ep_dequeue, + .set_halt = isp1760_ep_set_halt, + .set_wedge = isp1760_ep_set_wedge, + .fifo_flush = isp1760_ep_fifo_flush, +}; + +/* ----------------------------------------------------------------------------- + * Device States + */ + +/* Called with the UDC spinlock held. */ +static void isp1760_udc_connect(struct isp1760_udc *udc) +{ + usb_gadget_set_state(&udc->gadget, USB_STATE_POWERED); + mod_timer(&udc->vbus_timer, jiffies + ISP1760_VBUS_POLL_INTERVAL); +} + +/* Called with the UDC spinlock held. */ +static void isp1760_udc_disconnect(struct isp1760_udc *udc) +{ + if (udc->gadget.state < USB_STATE_POWERED) + return; + + dev_dbg(udc->isp->dev, "Device disconnected in state %u\n", + udc->gadget.state); + + udc->gadget.speed = USB_SPEED_UNKNOWN; + usb_gadget_set_state(&udc->gadget, USB_STATE_ATTACHED); + + if (udc->driver->disconnect) + udc->driver->disconnect(&udc->gadget); + + del_timer(&udc->vbus_timer); + + /* TODO Reset all endpoints ? */ +} + +static void isp1760_udc_init_hw(struct isp1760_udc *udc) +{ + /* + * The device controller currently shares its interrupt with the host + * controller, the DC_IRQ polarity and signaling mode are ignored. Set + * the to active-low level-triggered. + * + * Configure the control, in and out pipes to generate interrupts on + * ACK tokens only (and NYET for the out pipe). The default + * configuration also generates an interrupt on the first NACK token. + */ + isp1760_udc_write(udc, DC_INTCONF, DC_CDBGMOD_ACK | DC_DDBGMODIN_ACK | + DC_DDBGMODOUT_ACK_NYET); + + isp1760_udc_write(udc, DC_INTENABLE, DC_IEPRXTX(7) | DC_IEPRXTX(6) | + DC_IEPRXTX(5) | DC_IEPRXTX(4) | DC_IEPRXTX(3) | + DC_IEPRXTX(2) | DC_IEPRXTX(1) | DC_IEPRXTX(0) | + DC_IEP0SETUP | DC_IEVBUS | DC_IERESM | DC_IESUSP | + DC_IEHS_STA | DC_IEBRST); + + if (udc->connected) + isp1760_set_pullup(udc->isp, true); + + isp1760_udc_write(udc, DC_ADDRESS, DC_DEVEN); +} + +static void isp1760_udc_reset(struct isp1760_udc *udc) +{ + unsigned long flags; + + spin_lock_irqsave(&udc->lock, flags); + + /* + * The bus reset has reset most registers to their default value, + * reinitialize the UDC hardware. + */ + isp1760_udc_init_hw(udc); + + udc->ep0_state = ISP1760_CTRL_SETUP; + udc->gadget.speed = USB_SPEED_FULL; + + usb_gadget_udc_reset(&udc->gadget, udc->driver); + + spin_unlock_irqrestore(&udc->lock, flags); +} + +static void isp1760_udc_suspend(struct isp1760_udc *udc) +{ + if (udc->gadget.state < USB_STATE_DEFAULT) + return; + + if (udc->driver->suspend) + udc->driver->suspend(&udc->gadget); +} + +static void isp1760_udc_resume(struct isp1760_udc *udc) +{ + if (udc->gadget.state < USB_STATE_DEFAULT) + return; + + if (udc->driver->resume) + udc->driver->resume(&udc->gadget); +} + +/* ----------------------------------------------------------------------------- + * Gadget Operations + */ + +static int isp1760_udc_get_frame(struct usb_gadget *gadget) +{ + struct isp1760_udc *udc = gadget_to_udc(gadget); + + return isp1760_udc_read(udc, DC_FRAMENUM) & ((1 << 11) - 1); +} + +static int isp1760_udc_wakeup(struct usb_gadget *gadget) +{ + struct isp1760_udc *udc = gadget_to_udc(gadget); + + dev_dbg(udc->isp->dev, "%s\n", __func__); + return -ENOTSUPP; +} + +static int isp1760_udc_set_selfpowered(struct usb_gadget *gadget, + int is_selfpowered) +{ + struct isp1760_udc *udc = gadget_to_udc(gadget); + + if (is_selfpowered) + udc->devstatus |= 1 << USB_DEVICE_SELF_POWERED; + else + udc->devstatus &= ~(1 << USB_DEVICE_SELF_POWERED); + + return 0; +} + +static int isp1760_udc_pullup(struct usb_gadget *gadget, int is_on) +{ + struct isp1760_udc *udc = gadget_to_udc(gadget); + + isp1760_set_pullup(udc->isp, is_on); + udc->connected = is_on; + + return 0; +} + +static int isp1760_udc_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) +{ + struct isp1760_udc *udc = gadget_to_udc(gadget); + + /* The hardware doesn't support low speed. */ + if (driver->max_speed < USB_SPEED_FULL) { + dev_err(udc->isp->dev, "Invalid gadget driver\n"); + return -EINVAL; + } + + spin_lock(&udc->lock); + + if (udc->driver) { + dev_err(udc->isp->dev, "UDC already has a gadget driver\n"); + spin_unlock(&udc->lock); + return -EBUSY; + } + + udc->driver = driver; + + spin_unlock(&udc->lock); + + dev_dbg(udc->isp->dev, "starting UDC with driver %s\n", + driver->function); + + udc->devstatus = 0; + udc->connected = true; + + usb_gadget_set_state(&udc->gadget, USB_STATE_ATTACHED); + + /* DMA isn't supported yet, don't enable the DMA clock. */ + isp1760_udc_write(udc, DC_MODE, DC_GLINTENA); + + isp1760_udc_init_hw(udc); + + dev_dbg(udc->isp->dev, "UDC started with driver %s\n", + driver->function); + + return 0; +} + +static int isp1760_udc_stop(struct usb_gadget *gadget) +{ + struct isp1760_udc *udc = gadget_to_udc(gadget); + + dev_dbg(udc->isp->dev, "%s\n", __func__); + + del_timer_sync(&udc->vbus_timer); + + isp1760_udc_write(udc, DC_MODE, 0); + + spin_lock(&udc->lock); + udc->driver = NULL; + spin_unlock(&udc->lock); + + return 0; +} + +static struct usb_gadget_ops isp1760_udc_ops = { + .get_frame = isp1760_udc_get_frame, + .wakeup = isp1760_udc_wakeup, + .set_selfpowered = isp1760_udc_set_selfpowered, + .pullup = isp1760_udc_pullup, + .udc_start = isp1760_udc_start, + .udc_stop = isp1760_udc_stop, +}; + +/* ----------------------------------------------------------------------------- + * Interrupt Handling + */ + +static irqreturn_t isp1760_udc_irq(int irq, void *dev) +{ + struct isp1760_udc *udc = dev; + unsigned int i; + u32 status; + + status = isp1760_udc_read(udc, DC_INTERRUPT) + & isp1760_udc_read(udc, DC_INTENABLE); + isp1760_udc_write(udc, DC_INTERRUPT, status); + + if (status & DC_IEVBUS) { + dev_dbg(udc->isp->dev, "%s(VBUS)\n", __func__); + /* The VBUS interrupt is only triggered when VBUS appears. */ + spin_lock(&udc->lock); + isp1760_udc_connect(udc); + spin_unlock(&udc->lock); + } + + if (status & DC_IEBRST) { + dev_dbg(udc->isp->dev, "%s(BRST)\n", __func__); + + isp1760_udc_reset(udc); + } + + for (i = 0; i <= 7; ++i) { + struct isp1760_ep *ep = &udc->ep[i*2]; + + if (status & DC_IEPTX(i)) { + dev_dbg(udc->isp->dev, "%s(EPTX%u)\n", __func__, i); + isp1760_ep_tx_complete(ep); + } + + if (status & DC_IEPRX(i)) { + dev_dbg(udc->isp->dev, "%s(EPRX%u)\n", __func__, i); + isp1760_ep_rx_ready(i ? ep - 1 : ep); + } + } + + if (status & DC_IEP0SETUP) { + dev_dbg(udc->isp->dev, "%s(EP0SETUP)\n", __func__); + + isp1760_ep0_setup(udc); + } + + if (status & DC_IERESM) { + dev_dbg(udc->isp->dev, "%s(RESM)\n", __func__); + isp1760_udc_resume(udc); + } + + if (status & DC_IESUSP) { + dev_dbg(udc->isp->dev, "%s(SUSP)\n", __func__); + + spin_lock(&udc->lock); + if (!(isp1760_udc_read(udc, DC_MODE) & DC_VBUSSTAT)) + isp1760_udc_disconnect(udc); + else + isp1760_udc_suspend(udc); + spin_unlock(&udc->lock); + } + + if (status & DC_IEHS_STA) { + dev_dbg(udc->isp->dev, "%s(HS_STA)\n", __func__); + udc->gadget.speed = USB_SPEED_HIGH; + } + + return status ? IRQ_HANDLED : IRQ_NONE; +} + +static void isp1760_udc_vbus_poll(unsigned long data) +{ + struct isp1760_udc *udc = (struct isp1760_udc *)data; + unsigned long flags; + + spin_lock_irqsave(&udc->lock, flags); + + if (!(isp1760_udc_read(udc, DC_MODE) & DC_VBUSSTAT)) + isp1760_udc_disconnect(udc); + else if (udc->gadget.state >= USB_STATE_POWERED) + mod_timer(&udc->vbus_timer, + jiffies + ISP1760_VBUS_POLL_INTERVAL); + + spin_unlock_irqrestore(&udc->lock, flags); +} + +/* ----------------------------------------------------------------------------- + * Registration + */ + +static void isp1760_udc_init_eps(struct isp1760_udc *udc) +{ + unsigned int i; + + INIT_LIST_HEAD(&udc->gadget.ep_list); + + for (i = 0; i < ARRAY_SIZE(udc->ep); ++i) { + struct isp1760_ep *ep = &udc->ep[i]; + unsigned int ep_num = (i + 1) / 2; + bool is_in = !(i & 1); + + ep->udc = udc; + + INIT_LIST_HEAD(&ep->queue); + + ep->addr = (ep_num && is_in ? USB_DIR_IN : USB_DIR_OUT) + | ep_num; + ep->desc = NULL; + + sprintf(ep->name, "ep%u%s", ep_num, + ep_num ? (is_in ? "in" : "out") : ""); + + ep->ep.ops = &isp1760_ep_ops; + ep->ep.name = ep->name; + + /* + * Hardcode the maximum packet sizes for now, to 64 bytes for + * the control endpoint and 512 bytes for all other endpoints. + * This fits in the 8kB FIFO without double-buffering. + */ + if (ep_num == 0) { + ep->ep.maxpacket = 64; + ep->maxpacket = 64; + udc->gadget.ep0 = &ep->ep; + } else { + ep->ep.maxpacket = 512; + ep->maxpacket = 0; + list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); + } + } +} + +static int isp1760_udc_init(struct isp1760_udc *udc) +{ + u16 scratch; + u32 chipid; + + /* + * Check that the controller is present by writing to the scratch + * register, modifying the bus pattern by reading from the chip ID + * register, and reading the scratch register value back. The chip ID + * and scratch register contents must match the expected values. + */ + isp1760_udc_write(udc, DC_SCRATCH, 0xbabe); + chipid = isp1760_udc_read(udc, DC_CHIPID); + scratch = isp1760_udc_read(udc, DC_SCRATCH); + + if (scratch != 0xbabe) { + dev_err(udc->isp->dev, + "udc: scratch test failed (0x%04x/0x%08x)\n", + scratch, chipid); + return -ENODEV; + } + + if (chipid != 0x00011582) { + dev_err(udc->isp->dev, "udc: invalid chip ID 0x%08x\n", chipid); + return -ENODEV; + } + + /* Reset the device controller. */ + isp1760_udc_write(udc, DC_MODE, DC_SFRESET); + usleep_range(10000, 11000); + isp1760_udc_write(udc, DC_MODE, 0); + usleep_range(10000, 11000); + + return 0; +} + +int isp1760_udc_register(struct isp1760_device *isp, int irq, + unsigned long irqflags) +{ + struct isp1760_udc *udc = &isp->udc; + const char *devname; + int ret; + + udc->irq = -1; + udc->isp = isp; + udc->regs = isp->regs; + + spin_lock_init(&udc->lock); + setup_timer(&udc->vbus_timer, isp1760_udc_vbus_poll, + (unsigned long)udc); + + ret = isp1760_udc_init(udc); + if (ret < 0) + return ret; + + devname = dev_name(isp->dev); + udc->irqname = kmalloc(strlen(devname) + 7, GFP_KERNEL); + if (!udc->irqname) + return -ENOMEM; + + sprintf(udc->irqname, "%s (udc)", devname); + + ret = request_irq(irq, isp1760_udc_irq, IRQF_SHARED | IRQF_DISABLED | + irqflags, udc->irqname, udc); + if (ret < 0) + goto error; + + udc->irq = irq; + + /* + * Initialize the gadget static fields and register its device. Gadget + * fields that vary during the life time of the gadget are initialized + * by the UDC core. + */ + udc->gadget.ops = &isp1760_udc_ops; + udc->gadget.speed = USB_SPEED_UNKNOWN; + udc->gadget.max_speed = USB_SPEED_HIGH; + udc->gadget.name = "isp1761_udc"; + + isp1760_udc_init_eps(udc); + + ret = usb_add_gadget_udc(isp->dev, &udc->gadget); + if (ret < 0) + goto error; + + return 0; + +error: + if (udc->irq >= 0) + free_irq(udc->irq, udc); + kfree(udc->irqname); + + return ret; +} + +void isp1760_udc_unregister(struct isp1760_device *isp) +{ + struct isp1760_udc *udc = &isp->udc; + + if (!udc->isp) + return; + + usb_del_gadget_udc(&udc->gadget); + + free_irq(udc->irq, udc); + kfree(udc->irqname); +} diff --git a/drivers/usb/isp1760/isp1760-udc.h b/drivers/usb/isp1760/isp1760-udc.h new file mode 100644 index 000000000000..26899ed81145 --- /dev/null +++ b/drivers/usb/isp1760/isp1760-udc.h @@ -0,0 +1,106 @@ +/* + * Driver for the NXP ISP1761 device controller + * + * Copyright 2014 Ideas on Board Oy + * + * Contacts: + * Laurent Pinchart <laurent.pinchart@ideasonboard.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + */ + +#ifndef _ISP1760_UDC_H_ +#define _ISP1760_UDC_H_ + +#include <linux/ioport.h> +#include <linux/list.h> +#include <linux/spinlock.h> +#include <linux/timer.h> +#include <linux/usb/gadget.h> + +struct isp1760_device; +struct isp1760_udc; + +enum isp1760_ctrl_state { + ISP1760_CTRL_SETUP, /* Waiting for a SETUP transaction */ + ISP1760_CTRL_DATA_IN, /* Setup received, data IN stage */ + ISP1760_CTRL_DATA_OUT, /* Setup received, data OUT stage */ + ISP1760_CTRL_STATUS, /* 0-length request in status stage */ +}; + +struct isp1760_ep { + struct isp1760_udc *udc; + struct usb_ep ep; + + struct list_head queue; + + unsigned int addr; + unsigned int maxpacket; + char name[7]; + + const struct usb_endpoint_descriptor *desc; + + bool rx_pending; + bool halted; + bool wedged; +}; + +/** + * struct isp1760_udc - UDC state information + * irq: IRQ number + * irqname: IRQ name (as passed to request_irq) + * regs: Base address of the UDC registers + * driver: Gadget driver + * gadget: Gadget device + * lock: Protects driver, vbus_timer, ep, ep0_*, DC_EPINDEX register + * ep: Array of endpoints + * ep0_state: Control request state for endpoint 0 + * ep0_dir: Direction of the current control request + * ep0_length: Length of the current control request + * connected: Tracks gadget driver bus connection state + */ +struct isp1760_udc { +#ifdef CONFIG_USB_ISP1761_UDC + struct isp1760_device *isp; + + int irq; + char *irqname; + void __iomem *regs; + + struct usb_gadget_driver *driver; + struct usb_gadget gadget; + + spinlock_t lock; + struct timer_list vbus_timer; + + struct isp1760_ep ep[15]; + + enum isp1760_ctrl_state ep0_state; + u8 ep0_dir; + u16 ep0_length; + + bool connected; + + unsigned int devstatus; +#endif +}; + +#ifdef CONFIG_USB_ISP1761_UDC +int isp1760_udc_register(struct isp1760_device *isp, int irq, + unsigned long irqflags); +void isp1760_udc_unregister(struct isp1760_device *isp); +#else +static inline int isp1760_udc_register(struct isp1760_device *isp, int irq, + unsigned long irqflags) +{ + return 0; +} + +static inline void isp1760_udc_unregister(struct isp1760_device *isp) +{ +} +#endif + +#endif diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index b005010240e5..14e1628483d9 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -63,11 +63,13 @@ comment "Platform Glue Layer" config USB_MUSB_DAVINCI tristate "DaVinci" depends on ARCH_DAVINCI_DMx + depends on NOP_USB_XCEIV depends on BROKEN config USB_MUSB_DA8XX tristate "DA8xx/OMAP-L1x" depends on ARCH_DAVINCI_DA8XX + depends on NOP_USB_XCEIV depends on BROKEN config USB_MUSB_TUSB6010 @@ -77,12 +79,13 @@ config USB_MUSB_TUSB6010 config USB_MUSB_OMAP2PLUS tristate "OMAP2430 and onwards" - depends on ARCH_OMAP2PLUS && USB + depends on ARCH_OMAP2PLUS && USB && OMAP_CONTROL_PHY select GENERIC_PHY config USB_MUSB_AM35X tristate "AM35x" depends on ARCH_OMAP + depends on NOP_USB_XCEIV config USB_MUSB_DSPS tristate "TI DSPS platforms" @@ -93,6 +96,7 @@ config USB_MUSB_DSPS config USB_MUSB_BLACKFIN tristate "Blackfin" depends on (BF54x && !BF544) || (BF52x && ! BF522 && !BF523) + depends on NOP_USB_XCEIV config USB_MUSB_UX500 tristate "Ux500 platforms" @@ -100,6 +104,7 @@ config USB_MUSB_UX500 config USB_MUSB_JZ4740 tristate "JZ4740" + depends on NOP_USB_XCEIV depends on MACH_JZ4740 || COMPILE_TEST depends on USB_MUSB_GADGET depends on USB_OTG_BLACKLIST_HUB diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c index 178250145613..6123b748d262 100644 --- a/drivers/usb/musb/blackfin.c +++ b/drivers/usb/musb/blackfin.c @@ -608,7 +608,7 @@ static SIMPLE_DEV_PM_OPS(bfin_pm_ops, bfin_suspend, bfin_resume); static struct platform_driver bfin_driver = { .probe = bfin_probe, - .remove = __exit_p(bfin_remove), + .remove = bfin_remove, .driver = { .name = "musb-blackfin", .pm = &bfin_pm_ops, diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 34cce3e38c49..e6f4cbfeed97 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -567,6 +567,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, musb->xceiv->otg->state = OTG_STATE_A_HOST; musb->is_active = 1; + musb_host_resume_root_hub(musb); break; case OTG_STATE_B_WAIT_ACON: musb->xceiv->otg->state = OTG_STATE_B_PERIPHERAL; @@ -2500,6 +2501,12 @@ static int musb_runtime_resume(struct device *dev) musb_restore_context(musb); first = 0; + if (musb->need_finish_resume) { + musb->need_finish_resume = 0; + schedule_delayed_work(&musb->finish_resume_work, + msecs_to_jiffies(20)); + } + return 0; } diff --git a/drivers/usb/musb/musb_cppi41.c b/drivers/usb/musb/musb_cppi41.c index c39a16ad7832..be84562d021b 100644 --- a/drivers/usb/musb/musb_cppi41.c +++ b/drivers/usb/musb/musb_cppi41.c @@ -9,9 +9,9 @@ #define RNDIS_REG(x) (0x80 + ((x - 1) * 4)) -#define EP_MODE_AUTOREG_NONE 0 -#define EP_MODE_AUTOREG_ALL_NEOP 1 -#define EP_MODE_AUTOREG_ALWAYS 3 +#define EP_MODE_AUTOREQ_NONE 0 +#define EP_MODE_AUTOREQ_ALL_NEOP 1 +#define EP_MODE_AUTOREQ_ALWAYS 3 #define EP_MODE_DMA_TRANSPARENT 0 #define EP_MODE_DMA_RNDIS 1 @@ -404,19 +404,19 @@ static bool cppi41_configure_channel(struct dma_channel *channel, /* auto req */ cppi41_set_autoreq_mode(cppi41_channel, - EP_MODE_AUTOREG_ALL_NEOP); + EP_MODE_AUTOREQ_ALL_NEOP); } else { musb_writel(musb->ctrl_base, RNDIS_REG(cppi41_channel->port_num), 0); cppi41_set_dma_mode(cppi41_channel, EP_MODE_DMA_TRANSPARENT); cppi41_set_autoreq_mode(cppi41_channel, - EP_MODE_AUTOREG_NONE); + EP_MODE_AUTOREQ_NONE); } } else { /* fallback mode */ cppi41_set_dma_mode(cppi41_channel, EP_MODE_DMA_TRANSPARENT); - cppi41_set_autoreq_mode(cppi41_channel, EP_MODE_AUTOREG_NONE); + cppi41_set_autoreq_mode(cppi41_channel, EP_MODE_AUTOREQ_NONE); len = min_t(u32, packet_sz, len); } cppi41_channel->prog_len = len; @@ -549,10 +549,15 @@ static int cppi41_dma_channel_abort(struct dma_channel *channel) csr &= ~MUSB_TXCSR_DMAENAB; musb_writew(epio, MUSB_TXCSR, csr); } else { + cppi41_set_autoreq_mode(cppi41_channel, EP_MODE_AUTOREQ_NONE); + csr = musb_readw(epio, MUSB_RXCSR); csr &= ~(MUSB_RXCSR_H_REQPKT | MUSB_RXCSR_DMAENAB); musb_writew(epio, MUSB_RXCSR, csr); + /* wait to drain cppi dma pipe line */ + udelay(50); + csr = musb_readw(epio, MUSB_RXCSR); if (csr & MUSB_RXCSR_RXPKTRDY) { csr |= MUSB_RXCSR_FLUSHFIFO; @@ -566,13 +571,14 @@ static int cppi41_dma_channel_abort(struct dma_channel *channel) tdbit <<= 16; do { - musb_writel(musb->ctrl_base, USB_TDOWN, tdbit); + if (is_tx) + musb_writel(musb->ctrl_base, USB_TDOWN, tdbit); ret = dmaengine_terminate_all(cppi41_channel->dc); } while (ret == -EAGAIN); - musb_writel(musb->ctrl_base, USB_TDOWN, tdbit); - if (is_tx) { + musb_writel(musb->ctrl_base, USB_TDOWN, tdbit); + csr = musb_readw(epio, MUSB_TXCSR); if (csr & MUSB_TXCSR_TXPKTRDY) { csr |= MUSB_TXCSR_FLUSHFIFO; diff --git a/drivers/usb/musb/musb_debugfs.c b/drivers/usb/musb/musb_debugfs.c index 48131aa8472c..78a283e9ce40 100644 --- a/drivers/usb/musb/musb_debugfs.c +++ b/drivers/usb/musb/musb_debugfs.c @@ -196,7 +196,7 @@ static ssize_t musb_test_mode_write(struct file *file, memset(buf, 0x00, sizeof(buf)); - if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) + if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT; if (strstarts(buf, "force host")) diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index 49b04cb6f5ca..b2d9040c7685 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -1612,9 +1612,7 @@ done: static int musb_gadget_set_self_powered(struct usb_gadget *gadget, int is_selfpowered) { - struct musb *musb = gadget_to_musb(gadget); - - musb->is_self_powered = !!is_selfpowered; + gadget->is_selfpowered = !!is_selfpowered; return 0; } diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c index 2af45a0c8930..10d30afe4a3c 100644 --- a/drivers/usb/musb/musb_gadget_ep0.c +++ b/drivers/usb/musb/musb_gadget_ep0.c @@ -85,7 +85,7 @@ static int service_tx_status_request( switch (recip) { case USB_RECIP_DEVICE: - result[0] = musb->is_self_powered << USB_DEVICE_SELF_POWERED; + result[0] = musb->g.is_selfpowered << USB_DEVICE_SELF_POWERED; result[0] |= musb->may_wakeup << USB_DEVICE_REMOTE_WAKEUP; if (musb->g.is_otg) { result[0] |= musb->g.b_hnp_enable diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c index b79e5be7aa97..294e159f4afe 100644 --- a/drivers/usb/musb/musb_virthub.c +++ b/drivers/usb/musb/musb_virthub.c @@ -72,7 +72,6 @@ void musb_host_finish_resume(struct work_struct *work) musb->xceiv->otg->state = OTG_STATE_A_HOST; spin_unlock_irqrestore(&musb->lock, flags); - musb_host_resume_root_hub(musb); } void musb_port_suspend(struct musb *musb, bool do_suspend) @@ -349,8 +348,7 @@ int musb_hub_control( desc->bDescriptorType = 0x29; desc->bNbrPorts = 1; desc->wHubCharacteristics = cpu_to_le16( - HUB_CHAR_INDV_PORT_LPSM /* per-port power switching */ - + HUB_CHAR_INDV_PORT_LPSM /* per-port power switching */ | HUB_CHAR_NO_OCPM /* no overcurrent reporting */ ); desc->bPwrOn2PwrGood = 5; /* msec/2 */ diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c index ab38aa32a6c1..94eb2923afed 100644 --- a/drivers/usb/phy/phy-fsl-usb.c +++ b/drivers/usb/phy/phy-fsl-usb.c @@ -107,19 +107,6 @@ static void (*_fsl_writel)(u32 v, unsigned __iomem *p); #define fsl_writel(val, addr) writel(val, addr) #endif /* CONFIG_PPC32 */ -/* Routines to access transceiver ULPI registers */ -u8 view_ulpi(u8 addr) -{ - u32 temp; - - temp = 0x40000000 | (addr << 16); - fsl_writel(temp, &usb_dr_regs->ulpiview); - udelay(1000); - while (temp & 0x40) - temp = fsl_readl(&usb_dr_regs->ulpiview); - return (le32_to_cpu(temp) & 0x0000ff00) >> 8; -} - int write_ulpi(u8 addr, u8 data) { u32 temp; @@ -460,28 +447,6 @@ static void fsl_otg_fsm_del_timer(struct otg_fsm *fsm, enum otg_fsm_timer t) fsl_otg_del_timer(fsm, timer); } -/* - * Reduce timer count by 1, and find timeout conditions. - * Called by fsl_otg 1ms timer interrupt - */ -int fsl_otg_tick_timer(void) -{ - struct fsl_otg_timer *tmp_timer, *del_tmp; - int expired = 0; - - list_for_each_entry_safe(tmp_timer, del_tmp, &active_timers, list) { - tmp_timer->count--; - /* check if timer expires */ - if (!tmp_timer->count) { - list_del(&tmp_timer->list); - tmp_timer->function(tmp_timer->data); - expired = 1; - } - } - - return expired; -} - /* Reset controller, not reset the bus */ void otg_reset_controller(void) { diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c index f1b719b45a53..70be50b734b2 100644 --- a/drivers/usb/phy/phy-generic.c +++ b/drivers/usb/phy/phy-generic.c @@ -27,6 +27,7 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> +#include <linux/usb/gadget.h> #include <linux/usb/otg.h> #include <linux/usb/usb_phy_generic.h> #include <linux/slab.h> @@ -39,6 +40,10 @@ #include "phy-generic.h" +#define VBUS_IRQ_FLAGS \ + (IRQF_SHARED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | \ + IRQF_ONESHOT) + struct platform_device *usb_phy_generic_register(void) { return platform_device_register_simple("usb_phy_generic", @@ -59,19 +64,79 @@ static int nop_set_suspend(struct usb_phy *x, int suspend) static void nop_reset_set(struct usb_phy_generic *nop, int asserted) { - int value; + if (!nop->gpiod_reset) + return; + + gpiod_direction_output(nop->gpiod_reset, !asserted); + usleep_range(10000, 20000); + gpiod_set_value(nop->gpiod_reset, asserted); +} + +/* interface to regulator framework */ +static void nop_set_vbus_draw(struct usb_phy_generic *nop, unsigned mA) +{ + struct regulator *vbus_draw = nop->vbus_draw; + int enabled; + int ret; - if (!gpio_is_valid(nop->gpio_reset)) + if (!vbus_draw) return; - value = asserted; - if (nop->reset_active_low) - value = !value; + enabled = nop->vbus_draw_enabled; + if (mA) { + regulator_set_current_limit(vbus_draw, 0, 1000 * mA); + if (!enabled) { + ret = regulator_enable(vbus_draw); + if (ret < 0) + return; + nop->vbus_draw_enabled = 1; + } + } else { + if (enabled) { + ret = regulator_disable(vbus_draw); + if (ret < 0) + return; + nop->vbus_draw_enabled = 0; + } + } + nop->mA = mA; +} + + +static irqreturn_t nop_gpio_vbus_thread(int irq, void *data) +{ + struct usb_phy_generic *nop = data; + struct usb_otg *otg = nop->phy.otg; + int vbus, status; + + vbus = gpiod_get_value(nop->gpiod_vbus); + if ((vbus ^ nop->vbus) == 0) + return IRQ_HANDLED; + nop->vbus = vbus; + + if (vbus) { + status = USB_EVENT_VBUS; + otg->state = OTG_STATE_B_PERIPHERAL; + nop->phy.last_event = status; + usb_gadget_vbus_connect(otg->gadget); + + /* drawing a "unit load" is *always* OK, except for OTG */ + nop_set_vbus_draw(nop, 100); + + atomic_notifier_call_chain(&nop->phy.notifier, status, + otg->gadget); + } else { + nop_set_vbus_draw(nop, 0); - gpio_set_value_cansleep(nop->gpio_reset, value); + usb_gadget_vbus_disconnect(otg->gadget); + status = USB_EVENT_NONE; + otg->state = OTG_STATE_B_IDLE; + nop->phy.last_event = status; - if (!asserted) - usleep_range(10000, 20000); + atomic_notifier_call_chain(&nop->phy.notifier, status, + otg->gadget); + } + return IRQ_HANDLED; } int usb_gen_phy_init(struct usb_phy *phy) @@ -143,36 +208,47 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop, struct usb_phy_generic_platform_data *pdata) { enum usb_phy_type type = USB_PHY_TYPE_USB2; - int err; + int err = 0; u32 clk_rate = 0; bool needs_vcc = false; - nop->reset_active_low = true; /* default behaviour */ - if (dev->of_node) { struct device_node *node = dev->of_node; - enum of_gpio_flags flags = 0; if (of_property_read_u32(node, "clock-frequency", &clk_rate)) clk_rate = 0; needs_vcc = of_property_read_bool(node, "vcc-supply"); - nop->gpio_reset = of_get_named_gpio_flags(node, "reset-gpios", - 0, &flags); - if (nop->gpio_reset == -EPROBE_DEFER) - return -EPROBE_DEFER; - - nop->reset_active_low = flags & OF_GPIO_ACTIVE_LOW; - + nop->gpiod_reset = devm_gpiod_get_optional(dev, "reset"); + err = PTR_ERR_OR_ZERO(nop->gpiod_reset); + if (!err) { + nop->gpiod_vbus = devm_gpiod_get_optional(dev, + "vbus-detect"); + err = PTR_ERR_OR_ZERO(nop->gpiod_vbus); + } } else if (pdata) { type = pdata->type; clk_rate = pdata->clk_rate; needs_vcc = pdata->needs_vcc; - nop->gpio_reset = pdata->gpio_reset; - } else { - nop->gpio_reset = -1; + if (gpio_is_valid(pdata->gpio_reset)) { + err = devm_gpio_request_one(dev, pdata->gpio_reset, 0, + dev_name(dev)); + if (!err) + nop->gpiod_reset = + gpio_to_desc(pdata->gpio_reset); + } + nop->gpiod_vbus = pdata->gpiod_vbus; + } + + if (err == -EPROBE_DEFER) + return -EPROBE_DEFER; + if (err) { + dev_err(dev, "Error requesting RESET or VBUS GPIO\n"); + return err; } + if (nop->gpiod_reset) + gpiod_direction_output(nop->gpiod_reset, 1); nop->phy.otg = devm_kzalloc(dev, sizeof(*nop->phy.otg), GFP_KERNEL); @@ -201,24 +277,6 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop, return -EPROBE_DEFER; } - if (gpio_is_valid(nop->gpio_reset)) { - unsigned long gpio_flags; - - /* Assert RESET */ - if (nop->reset_active_low) - gpio_flags = GPIOF_OUT_INIT_LOW; - else - gpio_flags = GPIOF_OUT_INIT_HIGH; - - err = devm_gpio_request_one(dev, nop->gpio_reset, - gpio_flags, dev_name(dev)); - if (err) { - dev_err(dev, "Error requesting RESET GPIO %d\n", - nop->gpio_reset); - return err; - } - } - nop->dev = dev; nop->phy.dev = nop->dev; nop->phy.label = "nop-xceiv"; @@ -247,6 +305,18 @@ static int usb_phy_generic_probe(struct platform_device *pdev) err = usb_phy_gen_create_phy(dev, nop, dev_get_platdata(&pdev->dev)); if (err) return err; + if (nop->gpiod_vbus) { + err = devm_request_threaded_irq(&pdev->dev, + gpiod_to_irq(nop->gpiod_vbus), + NULL, nop_gpio_vbus_thread, + VBUS_IRQ_FLAGS, "vbus_detect", + nop); + if (err) { + dev_err(&pdev->dev, "can't request irq %i, err: %d\n", + gpiod_to_irq(nop->gpiod_vbus), err); + return err; + } + } nop->phy.init = usb_gen_phy_init; nop->phy.shutdown = usb_gen_phy_shutdown; diff --git a/drivers/usb/phy/phy-generic.h b/drivers/usb/phy/phy-generic.h index d8feacc0b7fb..0d0eadd54ed9 100644 --- a/drivers/usb/phy/phy-generic.h +++ b/drivers/usb/phy/phy-generic.h @@ -2,14 +2,20 @@ #define _PHY_GENERIC_H_ #include <linux/usb/usb_phy_generic.h> +#include <linux/gpio/consumer.h> +#include <linux/regulator/consumer.h> struct usb_phy_generic { struct usb_phy phy; struct device *dev; struct clk *clk; struct regulator *vcc; - int gpio_reset; - bool reset_active_low; + struct gpio_desc *gpiod_reset; + struct gpio_desc *gpiod_vbus; + struct regulator *vbus_draw; + bool vbus_draw_enabled; + unsigned long mA; + unsigned int vbus; }; int usb_gen_phy_init(struct usb_phy *phy); diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index b9589f663683..8f7cb068d29b 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -40,6 +40,7 @@ #define BM_USBPHY_CTRL_SFTRST BIT(31) #define BM_USBPHY_CTRL_CLKGATE BIT(30) +#define BM_USBPHY_CTRL_OTG_ID_VALUE BIT(27) #define BM_USBPHY_CTRL_ENAUTOSET_USBCLKS BIT(26) #define BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE BIT(25) #define BM_USBPHY_CTRL_ENVBUSCHG_WKUP BIT(23) @@ -69,6 +70,9 @@ #define ANADIG_USB2_LOOPBACK_SET 0x244 #define ANADIG_USB2_LOOPBACK_CLR 0x248 +#define ANADIG_USB1_MISC 0x1f0 +#define ANADIG_USB2_MISC 0x250 + #define BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG BIT(12) #define BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG_SL BIT(11) @@ -80,6 +84,11 @@ #define BM_ANADIG_USB2_LOOPBACK_UTMI_DIG_TST1 BIT(2) #define BM_ANADIG_USB2_LOOPBACK_TSTI_TX_EN BIT(5) +#define BM_ANADIG_USB1_MISC_RX_VPIN_FS BIT(29) +#define BM_ANADIG_USB1_MISC_RX_VMIN_FS BIT(28) +#define BM_ANADIG_USB2_MISC_RX_VPIN_FS BIT(29) +#define BM_ANADIG_USB2_MISC_RX_VMIN_FS BIT(28) + #define to_mxs_phy(p) container_of((p), struct mxs_phy, phy) /* Do disconnection between PHY and controller without vbus */ @@ -131,8 +140,7 @@ static const struct mxs_phy_data vf610_phy_data = { }; static const struct mxs_phy_data imx6sx_phy_data = { - .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS | - MXS_PHY_NEED_IP_FIX, + .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS, }; static const struct of_device_id mxs_phy_dt_ids[] = { @@ -256,6 +264,18 @@ static void __mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool disconnect) usleep_range(500, 1000); } +static bool mxs_phy_is_otg_host(struct mxs_phy *mxs_phy) +{ + void __iomem *base = mxs_phy->phy.io_priv; + u32 phyctrl = readl(base + HW_USBPHY_CTRL); + + if (IS_ENABLED(CONFIG_USB_OTG) && + !(phyctrl & BM_USBPHY_CTRL_OTG_ID_VALUE)) + return true; + + return false; +} + static void mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool on) { bool vbus_is_on = false; @@ -270,7 +290,7 @@ static void mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool on) vbus_is_on = mxs_phy_get_vbus_status(mxs_phy); - if (on && !vbus_is_on) + if (on && !vbus_is_on && !mxs_phy_is_otg_host(mxs_phy)) __mxs_phy_disconnect_line(mxs_phy, true); else __mxs_phy_disconnect_line(mxs_phy, false); @@ -293,6 +313,17 @@ static int mxs_phy_init(struct usb_phy *phy) static void mxs_phy_shutdown(struct usb_phy *phy) { struct mxs_phy *mxs_phy = to_mxs_phy(phy); + u32 value = BM_USBPHY_CTRL_ENVBUSCHG_WKUP | + BM_USBPHY_CTRL_ENDPDMCHG_WKUP | + BM_USBPHY_CTRL_ENIDCHG_WKUP | + BM_USBPHY_CTRL_ENAUTOSET_USBCLKS | + BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE | + BM_USBPHY_CTRL_ENAUTOCLR_PHY_PWD | + BM_USBPHY_CTRL_ENAUTOCLR_CLKGATE | + BM_USBPHY_CTRL_ENAUTO_PWRON_PLL; + + writel(value, phy->io_priv + HW_USBPHY_CTRL_CLR); + writel(0xffffffff, phy->io_priv + HW_USBPHY_PWD); writel(BM_USBPHY_CTRL_CLKGATE, phy->io_priv + HW_USBPHY_CTRL_SET); @@ -300,13 +331,56 @@ static void mxs_phy_shutdown(struct usb_phy *phy) clk_disable_unprepare(mxs_phy->clk); } +static bool mxs_phy_is_low_speed_connection(struct mxs_phy *mxs_phy) +{ + unsigned int line_state; + /* bit definition is the same for all controllers */ + unsigned int dp_bit = BM_ANADIG_USB1_MISC_RX_VPIN_FS, + dm_bit = BM_ANADIG_USB1_MISC_RX_VMIN_FS; + unsigned int reg = ANADIG_USB1_MISC; + + /* If the SoCs don't have anatop, quit */ + if (!mxs_phy->regmap_anatop) + return false; + + if (mxs_phy->port_id == 0) + reg = ANADIG_USB1_MISC; + else if (mxs_phy->port_id == 1) + reg = ANADIG_USB2_MISC; + + regmap_read(mxs_phy->regmap_anatop, reg, &line_state); + + if ((line_state & (dp_bit | dm_bit)) == dm_bit) + return true; + else + return false; +} + static int mxs_phy_suspend(struct usb_phy *x, int suspend) { int ret; struct mxs_phy *mxs_phy = to_mxs_phy(x); + bool low_speed_connection, vbus_is_on; + + low_speed_connection = mxs_phy_is_low_speed_connection(mxs_phy); + vbus_is_on = mxs_phy_get_vbus_status(mxs_phy); if (suspend) { - writel(0xffffffff, x->io_priv + HW_USBPHY_PWD); + /* + * FIXME: Do not power down RXPWD1PT1 bit for low speed + * connect. The low speed connection will have problem at + * very rare cases during usb suspend and resume process. + */ + if (low_speed_connection & vbus_is_on) { + /* + * If value to be set as pwd value is not 0xffffffff, + * several 32Khz cycles are needed. + */ + mxs_phy_clock_switch_delay(); + writel(0xffbfffff, x->io_priv + HW_USBPHY_PWD); + } else { + writel(0xffffffff, x->io_priv + HW_USBPHY_PWD); + } writel(BM_USBPHY_CTRL_CLKGATE, x->io_priv + HW_USBPHY_CTRL_SET); clk_disable_unprepare(mxs_phy->clk); @@ -359,7 +433,9 @@ static int mxs_phy_on_disconnect(struct usb_phy *phy, dev_dbg(phy->dev, "%s device has disconnected\n", (speed == USB_SPEED_HIGH) ? "HS" : "FS/LS"); - if (speed == USB_SPEED_HIGH) + /* Sometimes, the speed is not high speed when the error occurs */ + if (readl(phy->io_priv + HW_USBPHY_CTRL) & + BM_USBPHY_CTRL_ENHOSTDISCONDETECT) writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT, phy->io_priv + HW_USBPHY_CTRL_CLR); diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c index 371478704899..4cf77d3c3bd2 100644 --- a/drivers/usb/renesas_usbhs/common.c +++ b/drivers/usb/renesas_usbhs/common.c @@ -363,6 +363,7 @@ static void usbhsc_hotplug(struct usbhs_priv *priv) struct usbhs_mod *mod = usbhs_mod_get_current(priv); int id; int enable; + int cable; int ret; /* @@ -376,6 +377,16 @@ static void usbhsc_hotplug(struct usbhs_priv *priv) id = usbhs_platform_call(priv, get_id, pdev); if (enable && !mod) { + if (priv->edev) { + cable = extcon_get_cable_state(priv->edev, "USB-HOST"); + if ((cable > 0 && id != USBHS_HOST) || + (!cable && id != USBHS_GADGET)) { + dev_info(&pdev->dev, + "USB cable plugged in doesn't match the selected role!\n"); + return; + } + } + ret = usbhs_mod_change(priv, id); if (ret < 0) return; @@ -514,6 +525,12 @@ static int usbhs_probe(struct platform_device *pdev) if (IS_ERR(priv->base)) return PTR_ERR(priv->base); + if (of_property_read_bool(pdev->dev.of_node, "extcon")) { + priv->edev = extcon_get_edev_by_phandle(&pdev->dev, 0); + if (IS_ERR(priv->edev)) + return PTR_ERR(priv->edev); + } + /* * care platform info */ @@ -615,7 +632,7 @@ static int usbhs_probe(struct platform_device *pdev) */ ret = usbhs_platform_call(priv, hardware_init, pdev); if (ret < 0) { - dev_err(&pdev->dev, "platform prove failed.\n"); + dev_err(&pdev->dev, "platform init failed.\n"); goto probe_end_mod_exit; } @@ -632,16 +649,12 @@ static int usbhs_probe(struct platform_device *pdev) /* * manual call notify_hotplug for cold plug */ - ret = usbhsc_drvcllbck_notify_hotplug(pdev); - if (ret < 0) - goto probe_end_call_remove; + usbhsc_drvcllbck_notify_hotplug(pdev); dev_info(&pdev->dev, "probed\n"); return ret; -probe_end_call_remove: - usbhs_platform_call(priv, hardware_exit, pdev); probe_end_mod_exit: usbhs_mod_remove(priv); probe_end_fifo_exit: diff --git a/drivers/usb/renesas_usbhs/common.h b/drivers/usb/renesas_usbhs/common.h index 0427cdd1a483..fc96e924edc4 100644 --- a/drivers/usb/renesas_usbhs/common.h +++ b/drivers/usb/renesas_usbhs/common.h @@ -17,6 +17,7 @@ #ifndef RENESAS_USB_DRIVER_H #define RENESAS_USB_DRIVER_H +#include <linux/extcon.h> #include <linux/platform_device.h> #include <linux/usb/renesas_usbhs.h> @@ -254,6 +255,8 @@ struct usbhs_priv { struct delayed_work notify_hotplug_work; struct platform_device *pdev; + struct extcon_dev *edev; + spinlock_t lock; u32 flags; diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c index f46271ce1b15..d891bff39d66 100644 --- a/drivers/usb/renesas_usbhs/fifo.c +++ b/drivers/usb/renesas_usbhs/fifo.c @@ -1054,10 +1054,8 @@ static void usbhsf_dma_quit(struct usbhs_priv *priv, struct usbhs_fifo *fifo) fifo->rx_chan = NULL; } -static void usbhsf_dma_init(struct usbhs_priv *priv, - struct usbhs_fifo *fifo) +static void usbhsf_dma_init_pdev(struct usbhs_fifo *fifo) { - struct device *dev = usbhs_priv_to_dev(priv); dma_cap_mask_t mask; dma_cap_zero(mask); @@ -1069,6 +1067,27 @@ static void usbhsf_dma_init(struct usbhs_priv *priv, dma_cap_set(DMA_SLAVE, mask); fifo->rx_chan = dma_request_channel(mask, usbhsf_dma_filter, &fifo->rx_slave); +} + +static void usbhsf_dma_init_dt(struct device *dev, struct usbhs_fifo *fifo) +{ + fifo->tx_chan = dma_request_slave_channel_reason(dev, "tx"); + if (IS_ERR(fifo->tx_chan)) + fifo->tx_chan = NULL; + fifo->rx_chan = dma_request_slave_channel_reason(dev, "rx"); + if (IS_ERR(fifo->rx_chan)) + fifo->rx_chan = NULL; +} + +static void usbhsf_dma_init(struct usbhs_priv *priv, + struct usbhs_fifo *fifo) +{ + struct device *dev = usbhs_priv_to_dev(priv); + + if (dev->of_node) + usbhsf_dma_init_dt(dev, fifo); + else + usbhsf_dma_init_pdev(fifo); if (fifo->tx_chan || fifo->rx_chan) dev_dbg(dev, "enable DMAEngine (%s%s%s)\n", diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c index 8697e6efcabf..e0384af77e56 100644 --- a/drivers/usb/renesas_usbhs/mod_gadget.c +++ b/drivers/usb/renesas_usbhs/mod_gadget.c @@ -926,6 +926,8 @@ static int usbhsg_set_selfpowered(struct usb_gadget *gadget, int is_self) else usbhsg_status_clr(gpriv, USBHSG_STATUS_SELF_POWERED); + gadget->is_selfpowered = (is_self != 0); + return 0; } |