diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/ep0.c | 15 | ||||
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 2 | ||||
| -rw-r--r-- | drivers/usb/gadget/composite.c | 7 | ||||
| -rw-r--r-- | drivers/usb/gadget/epautoconf.c | 2 | ||||
| -rw-r--r-- | drivers/usb/gadget/f_mass_storage.c | 10 | ||||
| -rw-r--r-- | drivers/usb/gadget/fsl_udc_core.c | 4 | ||||
| -rw-r--r-- | drivers/usb/gadget/langwell_udc.c | 107 | ||||
| -rw-r--r-- | drivers/usb/gadget/langwell_udc.h | 1 | ||||
| -rw-r--r-- | drivers/usb/gadget/storage_common.c | 6 | ||||
| -rw-r--r-- | drivers/usb/musb/davinci.c | 3 | ||||
| -rw-r--r-- | drivers/usb/musb/musb_core.c | 5 | ||||
| -rw-r--r-- | drivers/usb/musb/omap2430.c | 4 | ||||
| -rw-r--r-- | drivers/usb/otg/Kconfig | 18 | ||||
| -rw-r--r-- | drivers/usb/otg/Makefile | 1 | ||||
| -rw-r--r-- | drivers/usb/otg/langwell_otg.c | 2347 | ||||
| -rw-r--r-- | drivers/usb/renesas_usbhs/mod_gadget.c | 2 |
16 files changed, 37 insertions, 2497 deletions
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 2f51de57593a..c8df1dd967ef 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -126,7 +126,6 @@ static int __dwc3_gadget_ep0_queue(struct dwc3_ep *dep, struct dwc3_request *req) { struct dwc3 *dwc = dep->dwc; - u32 type; int ret = 0; req->request.actual = 0; @@ -149,20 +148,14 @@ static int __dwc3_gadget_ep0_queue(struct dwc3_ep *dep, direction = !!(dep->flags & DWC3_EP0_DIR_IN); - if (dwc->ep0state == EP0_STATUS_PHASE) { - type = dwc->three_stage_setup - ? DWC3_TRBCTL_CONTROL_STATUS3 - : DWC3_TRBCTL_CONTROL_STATUS2; - } else if (dwc->ep0state == EP0_DATA_PHASE) { - type = DWC3_TRBCTL_CONTROL_DATA; - } else { - /* should never happen */ - WARN_ON(1); + if (dwc->ep0state != EP0_DATA_PHASE) { + dev_WARN(dwc->dev, "Unexpected pending request\n"); return 0; } ret = dwc3_ep0_start_trans(dwc, direction, - req->request.dma, req->request.length, type); + req->request.dma, req->request.length, + DWC3_TRBCTL_CONTROL_DATA); dep->flags &= ~(DWC3_EP_PENDING_REQUEST | DWC3_EP0_DIR_IN); } else if (dwc->delayed_status) { diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index a696bde53222..064b6e2cd411 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -101,7 +101,7 @@ void dwc3_unmap_buffer_from_dma(struct dwc3_request *req) if (req->request.num_mapped_sgs) { req->request.dma = DMA_ADDR_INVALID; dma_unmap_sg(dwc->dev, req->request.sg, - req->request.num_sgs, + req->request.num_mapped_sgs, req->direction ? DMA_TO_DEVICE : DMA_FROM_DEVICE); diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index a95de6a4a134..baaebf2830fc 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -175,13 +175,12 @@ ep_found: _ep->comp_desc = comp_desc; if (g->speed == USB_SPEED_SUPER) { switch (usb_endpoint_type(_ep->desc)) { - case USB_ENDPOINT_XFER_BULK: - case USB_ENDPOINT_XFER_INT: - _ep->maxburst = comp_desc->bMaxBurst; - break; case USB_ENDPOINT_XFER_ISOC: /* mult: bits 1:0 of bmAttributes */ _ep->mult = comp_desc->bmAttributes & 0x3; + case USB_ENDPOINT_XFER_BULK: + case USB_ENDPOINT_XFER_INT: + _ep->maxburst = comp_desc->bMaxBurst; break; default: /* Do nothing for control endpoints */ diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c index 753aa0683ac1..e0e6375ef5dd 100644 --- a/drivers/usb/gadget/epautoconf.c +++ b/drivers/usb/gadget/epautoconf.c @@ -126,7 +126,7 @@ ep_matches ( * descriptor and see if the EP matches it */ if (usb_endpoint_xfer_bulk(desc)) { - if (ep_comp) { + if (ep_comp && gadget->max_speed >= USB_SPEED_SUPER) { num_req_streams = ep_comp->bmAttributes & 0x1f; if (num_req_streams > ep->max_streams) return 0; diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index 6353eca1e852..ee8ceec01560 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -3123,15 +3123,15 @@ fsg_add(struct usb_composite_dev *cdev, struct usb_configuration *c, struct fsg_module_parameters { char *file[FSG_MAX_LUNS]; - int ro[FSG_MAX_LUNS]; - int removable[FSG_MAX_LUNS]; - int cdrom[FSG_MAX_LUNS]; - int nofua[FSG_MAX_LUNS]; + bool ro[FSG_MAX_LUNS]; + bool removable[FSG_MAX_LUNS]; + bool cdrom[FSG_MAX_LUNS]; + bool nofua[FSG_MAX_LUNS]; unsigned int file_count, ro_count, removable_count, cdrom_count; unsigned int nofua_count; unsigned int luns; /* nluns */ - int stall; /* can_stall */ + bool stall; /* can_stall */ }; #define _FSG_MODULE_PARAM_ARRAY(prefix, params, name, type, desc) \ diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c index d7ea6c076ce9..b04712f19f1e 100644 --- a/drivers/usb/gadget/fsl_udc_core.c +++ b/drivers/usb/gadget/fsl_udc_core.c @@ -1430,7 +1430,7 @@ static void setup_received_irq(struct fsl_udc *udc, int pipe = get_pipe_by_windex(wIndex); struct fsl_ep *ep; - if (wValue != 0 || wLength != 0 || pipe > udc->max_ep) + if (wValue != 0 || wLength != 0 || pipe >= udc->max_ep) break; ep = get_ep_by_pipe(udc, pipe); @@ -1673,7 +1673,7 @@ static void dtd_complete_irq(struct fsl_udc *udc) if (!bit_pos) return; - for (i = 0; i < udc->max_ep * 2; i++) { + for (i = 0; i < udc->max_ep; i++) { ep_num = i >> 1; direction = i % 2; diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c index fa0fcc11263f..e2293c1588ee 100644 --- a/drivers/usb/gadget/langwell_udc.c +++ b/drivers/usb/gadget/langwell_udc.c @@ -11,11 +11,6 @@ /* #undef DEBUG */ /* #undef VERBOSE_DEBUG */ -#if defined(CONFIG_USB_LANGWELL_OTG) -#define OTG_TRANSCEIVER -#endif - - #include <linux/module.h> #include <linux/pci.h> #include <linux/dma-mapping.h> @@ -1522,8 +1517,7 @@ static void langwell_udc_stop(struct langwell_udc *dev) /* stop all USB activities */ -static void stop_activity(struct langwell_udc *dev, - struct usb_gadget_driver *driver) +static void stop_activity(struct langwell_udc *dev) { struct langwell_ep *ep; dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); @@ -1535,9 +1529,9 @@ static void stop_activity(struct langwell_udc *dev, } /* report disconnect; the driver is already quiesced */ - if (driver) { + if (dev->driver) { spin_unlock(&dev->lock); - driver->disconnect(&dev->gadget); + dev->driver->disconnect(&dev->gadget); spin_lock(&dev->lock); } @@ -1925,11 +1919,10 @@ static int langwell_stop(struct usb_gadget *g, /* stop all usb activities */ dev->gadget.speed = USB_SPEED_UNKNOWN; - stop_activity(dev, driver); - spin_unlock_irqrestore(&dev->lock, flags); - dev->gadget.dev.driver = NULL; dev->driver = NULL; + stop_activity(dev); + spin_unlock_irqrestore(&dev->lock, flags); device_remove_file(&dev->pdev->dev, &dev_attr_function); @@ -2315,13 +2308,9 @@ static void handle_setup_packet(struct langwell_udc *dev, if (!gadget_is_otg(&dev->gadget)) break; - else if (setup->bRequest == USB_DEVICE_B_HNP_ENABLE) { + else if (setup->bRequest == USB_DEVICE_B_HNP_ENABLE) dev->gadget.b_hnp_enable = 1; -#ifdef OTG_TRANSCEIVER - if (!dev->lotg->otg.default_a) - dev->lotg->hsm.b_hnp_enable = 1; -#endif - } else if (setup->bRequest == USB_DEVICE_A_HNP_SUPPORT) + else if (setup->bRequest == USB_DEVICE_A_HNP_SUPPORT) dev->gadget.a_hnp_support = 1; else if (setup->bRequest == USB_DEVICE_A_ALT_HNP_SUPPORT) @@ -2733,7 +2722,7 @@ static void handle_usb_reset(struct langwell_udc *dev) dev->bus_reset = 1; /* reset all the queues, stop all USB activities */ - stop_activity(dev, dev->driver); + stop_activity(dev); dev->usb_state = USB_STATE_DEFAULT; } else { dev_vdbg(&dev->pdev->dev, "device controller reset\n"); @@ -2741,7 +2730,7 @@ static void handle_usb_reset(struct langwell_udc *dev) langwell_udc_reset(dev); /* reset all the queues, stop all USB activities */ - stop_activity(dev, dev->driver); + stop_activity(dev); /* reset ep0 dQH and endptctrl */ ep0_reset(dev); @@ -2752,12 +2741,6 @@ static void handle_usb_reset(struct langwell_udc *dev) dev->usb_state = USB_STATE_ATTACHED; } -#ifdef OTG_TRANSCEIVER - /* refer to USB OTG 6.6.2.3 b_hnp_en is cleared */ - if (!dev->lotg->otg.default_a) - dev->lotg->hsm.b_hnp_enable = 0; -#endif - dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__); } @@ -2770,29 +2753,6 @@ static void handle_bus_suspend(struct langwell_udc *dev) dev->resume_state = dev->usb_state; dev->usb_state = USB_STATE_SUSPENDED; -#ifdef OTG_TRANSCEIVER - if (dev->lotg->otg.default_a) { - if (dev->lotg->hsm.b_bus_suspend_vld == 1) { - dev->lotg->hsm.b_bus_suspend = 1; - /* notify transceiver the state changes */ - if (spin_trylock(&dev->lotg->wq_lock)) { - langwell_update_transceiver(); - spin_unlock(&dev->lotg->wq_lock); - } - } - dev->lotg->hsm.b_bus_suspend_vld++; - } else { - if (!dev->lotg->hsm.a_bus_suspend) { - dev->lotg->hsm.a_bus_suspend = 1; - /* notify transceiver the state changes */ - if (spin_trylock(&dev->lotg->wq_lock)) { - langwell_update_transceiver(); - spin_unlock(&dev->lotg->wq_lock); - } - } - } -#endif - /* report suspend to the driver */ if (dev->driver) { if (dev->driver->suspend) { @@ -2823,11 +2783,6 @@ static void handle_bus_resume(struct langwell_udc *dev) if (dev->pdev->device != 0x0829) langwell_phy_low_power(dev, 0); -#ifdef OTG_TRANSCEIVER - if (dev->lotg->otg.default_a == 0) - dev->lotg->hsm.a_bus_suspend = 0; -#endif - /* report resume to the driver */ if (dev->driver) { if (dev->driver->resume) { @@ -3020,7 +2975,6 @@ static void langwell_udc_remove(struct pci_dev *pdev) dev->done = &done; -#ifndef OTG_TRANSCEIVER /* free dTD dma_pool and dQH */ if (dev->dtd_pool) dma_pool_destroy(dev->dtd_pool); @@ -3032,7 +2986,6 @@ static void langwell_udc_remove(struct pci_dev *pdev) /* release SRAM caching */ if (dev->has_sram && dev->got_sram) sram_deinit(dev); -#endif if (dev->status_req) { kfree(dev->status_req->req.buf); @@ -3045,7 +2998,6 @@ static void langwell_udc_remove(struct pci_dev *pdev) if (dev->got_irq) free_irq(pdev->irq, dev); -#ifndef OTG_TRANSCEIVER if (dev->cap_regs) iounmap(dev->cap_regs); @@ -3055,13 +3007,6 @@ static void langwell_udc_remove(struct pci_dev *pdev) if (dev->enabled) pci_disable_device(pdev); -#else - if (dev->transceiver) { - otg_put_transceiver(dev->transceiver); - dev->transceiver = NULL; - dev->lotg = NULL; - } -#endif dev->cap_regs = NULL; @@ -3072,9 +3017,7 @@ static void langwell_udc_remove(struct pci_dev *pdev) device_remove_file(&pdev->dev, &dev_attr_langwell_udc); device_remove_file(&pdev->dev, &dev_attr_remote_wakeup); -#ifndef OTG_TRANSCEIVER pci_set_drvdata(pdev, NULL); -#endif /* free dev, wait for the release() finished */ wait_for_completion(&done); @@ -3089,9 +3032,7 @@ static int langwell_udc_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct langwell_udc *dev; -#ifndef OTG_TRANSCEIVER unsigned long resource, len; -#endif void __iomem *base = NULL; size_t size; int retval; @@ -3109,16 +3050,6 @@ static int langwell_udc_probe(struct pci_dev *pdev, dev->pdev = pdev; dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); -#ifdef OTG_TRANSCEIVER - /* PCI device is already enabled by otg_transceiver driver */ - dev->enabled = 1; - - /* mem region and register base */ - dev->region = 1; - dev->transceiver = otg_get_transceiver(); - dev->lotg = otg_to_langwell(dev->transceiver); - base = dev->lotg->regs; -#else pci_set_drvdata(pdev, dev); /* now all the pci goodies ... */ @@ -3139,7 +3070,6 @@ static int langwell_udc_probe(struct pci_dev *pdev, dev->region = 1; base = ioremap_nocache(resource, len); -#endif if (base == NULL) { dev_err(&dev->pdev->dev, "can't map memory\n"); retval = -EFAULT; @@ -3163,7 +3093,6 @@ static int langwell_udc_probe(struct pci_dev *pdev, dev->got_sram = 0; dev_vdbg(&dev->pdev->dev, "dev->has_sram: %d\n", dev->has_sram); -#ifndef OTG_TRANSCEIVER /* enable SRAM caching if detected */ if (dev->has_sram && !dev->got_sram) sram_init(dev); @@ -3182,7 +3111,6 @@ static int langwell_udc_probe(struct pci_dev *pdev, goto error; } dev->got_irq = 1; -#endif /* set stopped bit */ dev->stopped = 1; @@ -3257,10 +3185,8 @@ static int langwell_udc_probe(struct pci_dev *pdev, dev->remote_wakeup = 0; dev->dev_status = 1 << USB_DEVICE_SELF_POWERED; -#ifndef OTG_TRANSCEIVER /* reset device controller */ langwell_udc_reset(dev); -#endif /* initialize gadget structure */ dev->gadget.ops = &langwell_ops; /* usb_gadget_ops */ @@ -3268,9 +3194,6 @@ static int langwell_udc_probe(struct pci_dev *pdev, INIT_LIST_HEAD(&dev->gadget.ep_list); /* ep_list */ dev->gadget.speed = USB_SPEED_UNKNOWN; /* speed */ dev->gadget.max_speed = USB_SPEED_HIGH; /* support dual speed */ -#ifdef OTG_TRANSCEIVER - dev->gadget.is_otg = 1; /* support otg mode */ -#endif /* the "gadget" abstracts/virtualizes the controller */ dev_set_name(&dev->gadget.dev, "gadget"); @@ -3282,10 +3205,8 @@ static int langwell_udc_probe(struct pci_dev *pdev, /* controller endpoints reinit */ eps_reinit(dev); -#ifndef OTG_TRANSCEIVER /* reset ep0 dQH and endptctrl */ ep0_reset(dev); -#endif /* create dTD dma_pool resource */ dev->dtd_pool = dma_pool_create("langwell_dtd", @@ -3367,7 +3288,7 @@ static int langwell_udc_suspend(struct pci_dev *pdev, pm_message_t state) spin_lock_irq(&dev->lock); /* stop all usb activities */ - stop_activity(dev, dev->driver); + stop_activity(dev); spin_unlock_irq(&dev->lock); /* free dTD dma_pool and dQH */ @@ -3525,22 +3446,14 @@ static struct pci_driver langwell_pci_driver = { static int __init init(void) { -#ifdef OTG_TRANSCEIVER - return langwell_register_peripheral(&langwell_pci_driver); -#else return pci_register_driver(&langwell_pci_driver); -#endif } module_init(init); static void __exit cleanup(void) { -#ifdef OTG_TRANSCEIVER - return langwell_unregister_peripheral(&langwell_pci_driver); -#else pci_unregister_driver(&langwell_pci_driver); -#endif } module_exit(cleanup); diff --git a/drivers/usb/gadget/langwell_udc.h b/drivers/usb/gadget/langwell_udc.h index ef79e242b7b0..d6e78accaffe 100644 --- a/drivers/usb/gadget/langwell_udc.h +++ b/drivers/usb/gadget/langwell_udc.h @@ -8,7 +8,6 @@ */ #include <linux/usb/langwell_udc.h> -#include <linux/usb/langwell_otg.h> /*-------------------------------------------------------------------------*/ diff --git a/drivers/usb/gadget/storage_common.c b/drivers/usb/gadget/storage_common.c index c7f291a331df..85ea14e2545e 100644 --- a/drivers/usb/gadget/storage_common.c +++ b/drivers/usb/gadget/storage_common.c @@ -598,16 +598,16 @@ static __maybe_unused struct usb_ss_cap_descriptor fsg_ss_cap_desc = { | USB_5GBPS_OPERATION), .bFunctionalitySupport = USB_LOW_SPEED_OPERATION, .bU1devExitLat = USB_DEFAULT_U1_DEV_EXIT_LAT, - .bU2DevExitLat = USB_DEFAULT_U2_DEV_EXIT_LAT, + .bU2DevExitLat = cpu_to_le16(USB_DEFAULT_U2_DEV_EXIT_LAT), }; static __maybe_unused struct usb_bos_descriptor fsg_bos_desc = { .bLength = USB_DT_BOS_SIZE, .bDescriptorType = USB_DT_BOS, - .wTotalLength = USB_DT_BOS_SIZE + .wTotalLength = cpu_to_le16(USB_DT_BOS_SIZE + USB_DT_USB_EXT_CAP_SIZE - + USB_DT_USB_SS_CAP_SIZE, + + USB_DT_USB_SS_CAP_SIZE), .bNumDeviceCaps = 2, }; diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c index f9a3f62a83b5..7c569f51212a 100644 --- a/drivers/usb/musb/davinci.c +++ b/drivers/usb/musb/davinci.c @@ -33,9 +33,6 @@ #include <linux/platform_device.h> #include <linux/dma-mapping.h> -#include <mach/hardware.h> -#include <mach/memory.h> -#include <asm/gpio.h> #include <mach/cputype.h> #include <asm/mach-types.h> diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 56cf0243979e..3d11cf64ebd1 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -981,6 +981,9 @@ static void musb_shutdown(struct platform_device *pdev) unsigned long flags; pm_runtime_get_sync(musb->controller); + + musb_gadget_cleanup(musb); + spin_lock_irqsave(&musb->lock, flags); musb_platform_disable(musb); musb_generic_disable(musb); @@ -1827,8 +1830,6 @@ static void musb_free(struct musb *musb) sysfs_remove_group(&musb->controller->kobj, &musb_attr_group); #endif - musb_gadget_cleanup(musb); - if (musb->nIrq >= 0) { if (musb->irq_wake) disable_irq_wake(musb->nIrq); diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index c27bbbf32b52..df719eae3b03 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -222,7 +222,6 @@ static inline void omap2430_low_level_init(struct musb *musb) musb_writel(musb->mregs, OTG_FORCESTDBY, l); } -/* blocking notifier support */ static int musb_otg_notifications(struct notifier_block *nb, unsigned long event, void *unused) { @@ -231,7 +230,7 @@ static int musb_otg_notifications(struct notifier_block *nb, musb->xceiv_event = event; schedule_work(&musb->otg_notifier_work); - return 0; + return NOTIFY_OK; } static void musb_otg_notifier_work(struct work_struct *data_notifier_work) @@ -386,6 +385,7 @@ static void omap2430_musb_disable(struct musb *musb) static int omap2430_musb_exit(struct musb *musb) { del_timer_sync(&musb_idle_timer); + cancel_work_sync(&musb->otg_notifier_work); omap2430_low_level_exit(musb); otg_put_transceiver(musb->xceiv); diff --git a/drivers/usb/otg/Kconfig b/drivers/usb/otg/Kconfig index 2a25955881fc..76d629345418 100644 --- a/drivers/usb/otg/Kconfig +++ b/drivers/usb/otg/Kconfig @@ -86,20 +86,6 @@ config NOP_USB_XCEIV built-in with usb ip or which are autonomous and doesn't require any phy programming such as ISP1x04 etc. -config USB_LANGWELL_OTG - tristate "Intel Langwell USB OTG dual-role support" - depends on USB && PCI && INTEL_SCU_IPC - select USB_OTG - select USB_OTG_UTILS - help - Say Y here if you want to build Intel Langwell USB OTG - transciever driver in kernel. This driver implements role - switch between EHCI host driver and Langwell USB OTG - client driver. - - To compile this driver as a module, choose M here: the - module will be called langwell_otg. - config USB_MSM_OTG tristate "OTG support for Qualcomm on-chip USB controller" depends on (USB || USB_GADGET) && ARCH_MSM @@ -124,7 +110,7 @@ config AB8500_USB config FSL_USB2_OTG bool "Freescale USB OTG Transceiver Driver" - depends on USB_EHCI_FSL && USB_GADGET_FSL_USB2 + depends on USB_EHCI_FSL && USB_GADGET_FSL_USB2 && USB_SUSPEND select USB_OTG select USB_OTG_UTILS help @@ -132,7 +118,7 @@ config FSL_USB2_OTG config USB_MV_OTG tristate "Marvell USB OTG support" - depends on USB_MV_UDC + depends on USB_MV_UDC && USB_SUSPEND select USB_OTG select USB_OTG_UTILS help diff --git a/drivers/usb/otg/Makefile b/drivers/usb/otg/Makefile index b2c5a9598637..41aa5098b139 100644 --- a/drivers/usb/otg/Makefile +++ b/drivers/usb/otg/Makefile @@ -13,7 +13,6 @@ obj-$(CONFIG_USB_GPIO_VBUS) += gpio_vbus.o obj-$(CONFIG_ISP1301_OMAP) += isp1301_omap.o obj-$(CONFIG_TWL4030_USB) += twl4030-usb.o obj-$(CONFIG_TWL6030_USB) += twl6030-usb.o -obj-$(CONFIG_USB_LANGWELL_OTG) += langwell_otg.o obj-$(CONFIG_NOP_USB_XCEIV) += nop-usb-xceiv.o obj-$(CONFIG_USB_ULPI) += ulpi.o obj-$(CONFIG_USB_ULPI_VIEWPORT) += ulpi_viewport.o diff --git a/drivers/usb/otg/langwell_otg.c b/drivers/usb/otg/langwell_otg.c deleted file mode 100644 index f08f784086f7..000000000000 --- a/drivers/usb/otg/langwell_otg.c +++ /dev/null @@ -1,2347 +0,0 @@ -/* - * Intel Langwell USB OTG transceiver driver - * Copyright (C) 2008 - 2010, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * - */ -/* This driver helps to switch Langwell OTG controller function between host - * and peripheral. It works with EHCI driver and Langwell client controller - * driver together. - */ -#include <linux/module.h> -#include <linux/init.h> -#include <linux/pci.h> -#include <linux/errno.h> -#include <linux/interrupt.h> -#include <linux/kernel.h> -#include <linux/device.h> -#include <linux/moduleparam.h> -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> -#include <linux/usb.h> -#include <linux/usb/otg.h> -#include <linux/usb/hcd.h> -#include <linux/notifier.h> -#include <linux/delay.h> -#include <asm/intel_scu_ipc.h> - -#include <linux/usb/langwell_otg.h> - -#define DRIVER_DESC "Intel Langwell USB OTG transceiver driver" -#define DRIVER_VERSION "July 10, 2010" - -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_AUTHOR("Henry Yuan <hang.yuan@intel.com>, Hao Wu <hao.wu@intel.com>"); -MODULE_VERSION(DRIVER_VERSION); -MODULE_LICENSE("GPL"); - -static const char driver_name[] = "langwell_otg"; - -static int langwell_otg_probe(struct pci_dev *pdev, - const struct pci_device_id *id); -static void langwell_otg_remove(struct pci_dev *pdev); -static int langwell_otg_suspend(struct pci_dev *pdev, pm_message_t message); -static int langwell_otg_resume(struct pci_dev *pdev); - -static int langwell_otg_set_host(struct otg_transceiver *otg, - struct usb_bus *host); -static int langwell_otg_set_peripheral(struct otg_transceiver *otg, - struct usb_gadget *gadget); -static int langwell_otg_start_srp(struct otg_transceiver *otg); - -static const struct pci_device_id pci_ids[] = {{ - .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe), - .class_mask = ~0, - .vendor = 0x8086, - .device = 0x0811, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, -}, { /* end: all zeroes */ } -}; - -static struct pci_driver otg_pci_driver = { - .name = (char *) driver_name, - .id_table = pci_ids, - - .probe = langwell_otg_probe, - .remove = langwell_otg_remove, - - .suspend = langwell_otg_suspend, - .resume = langwell_otg_resume, -}; - -/* HSM timers */ -static inline struct langwell_otg_timer *otg_timer_initializer -(void (*function)(unsigned long), unsigned long expires, unsigned long data) -{ - struct langwell_otg_timer *timer; - timer = kmalloc(sizeof(struct langwell_otg_timer), GFP_KERNEL); - if (timer == NULL) - return timer; - - timer->function = function; - timer->expires = expires; - timer->data = data; - return timer; -} - -static struct langwell_otg_timer *a_wait_vrise_tmr, *a_aidl_bdis_tmr, - *b_se0_srp_tmr, *b_srp_init_tmr; - -static struct list_head active_timers; - -static struct langwell_otg *the_transceiver; - -/* host/client notify transceiver when event affects HNP state */ -void langwell_update_transceiver(void) -{ - struct langwell_otg *lnw = the_transceiver; - - dev_dbg(lnw->dev, "transceiver is updated\n"); - - if (!lnw->qwork) - return ; - - queue_work(lnw->qwork, &lnw->work); -} -EXPORT_SYMBOL(langwell_update_transceiver); - -static int langwell_otg_set_host(struct otg_transceiver *otg, - struct usb_bus *host) -{ - otg->host = host; - - return 0; -} - -static int langwell_otg_set_peripheral(struct otg_transceiver *otg, - struct usb_gadget *gadget) -{ - otg->gadget = gadget; - - return 0; -} - -static int langwell_otg_set_power(struct otg_transceiver *otg, - unsigned mA) -{ - return 0; -} - -/* A-device drives vbus, controlled through IPC commands */ -static int langwell_otg_set_vbus(struct otg_transceiver *otg, bool enabled) -{ - struct langwell_otg *lnw = the_transceiver; - u8 sub_id; - - dev_dbg(lnw->dev, "%s <--- %s\n", __func__, enabled ? "on" : "off"); - - if (enabled) - sub_id = 0x8; /* Turn on the VBus */ - else - sub_id = 0x9; /* Turn off the VBus */ - - if (intel_scu_ipc_simple_command(0xef, sub_id)) { - dev_dbg(lnw->dev, "Failed to set Vbus via IPC commands\n"); - return -EBUSY; - } - - dev_dbg(lnw->dev, "%s --->\n", __func__); - - return 0; -} - -/* charge vbus or discharge vbus through a resistor to ground */ -static void langwell_otg_chrg_vbus(int on) -{ - struct langwell_otg *lnw = the_transceiver; - u32 val; - - val = readl(lnw->iotg.base + CI_OTGSC); - - if (on) - writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_VC, - lnw->iotg.base + CI_OTGSC); - else - writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_VD, - lnw->iotg.base + CI_OTGSC); -} - -/* Start SRP */ -static int langwell_otg_start_srp(struct otg_transceiver *otg) -{ - struct langwell_otg *lnw = the_transceiver; - struct intel_mid_otg_xceiv *iotg = &lnw->iotg; - u32 val; - - dev_dbg(lnw->dev, "%s --->\n", __func__); - - val = readl(iotg->base + CI_OTGSC); - - writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_HADP, - iotg->base + CI_OTGSC); - - /* Check if the data plus is finished or not */ - msleep(8); - val = readl(iotg->base + CI_OTGSC); - if (val & (OTGSC_HADP | OTGSC_DP)) - dev_dbg(lnw->dev, "DataLine SRP Error\n"); - - /* Disable interrupt - b_sess_vld */ - val = readl(iotg->base + CI_OTGSC); - val &= (~(OTGSC_BSVIE | OTGSC_BSEIE)); - writel(val, iotg->base + CI_OTGSC); - - /* Start VBus SRP, drive vbus to generate VBus pulse */ - iotg->otg.set_vbus(&iotg->otg, true); - msleep(15); - iotg->otg.set_vbus(&iotg->otg, false); - - /* Enable interrupt - b_sess_vld*/ - val = readl(iotg->base + CI_OTGSC); - dev_dbg(lnw->dev, "after VBUS pulse otgsc = %x\n", val); - - val |= (OTGSC_BSVIE | OTGSC_BSEIE); - writel(val, iotg->base + CI_OTGSC); - - /* If Vbus is valid, then update the hsm */ - if (val & OTGSC_BSV) { - dev_dbg(lnw->dev, "no b_sess_vld interrupt\n"); - - lnw->iotg.hsm.b_sess_vld = 1; - langwell_update_transceiver(); - } - - dev_dbg(lnw->dev, "%s <---\n", __func__); - return 0; -} - -/* stop SOF via bus_suspend */ -static void langwell_otg_loc_sof(int on) -{ - struct langwell_otg *lnw = the_transceiver; - struct usb_hcd *hcd; - int err; - - dev_dbg(lnw->dev, "%s ---> %s\n", __func__, on ? "suspend" : "resume"); - - hcd = bus_to_hcd(lnw->iotg.otg.host); - if (on) - err = hcd->driver->bus_resume(hcd); - else - err = hcd->driver->bus_suspend(hcd); - - if (err) - dev_dbg(lnw->dev, "Fail to resume/suspend USB bus - %d\n", err); - - dev_dbg(lnw->dev, "%s <---\n", __func__); -} - -static int langwell_otg_check_otgsc(void) -{ - struct langwell_otg *lnw = the_transceiver; - u32 otgsc, usbcfg; - - dev_dbg(lnw->dev, "check sync OTGSC and USBCFG registers\n"); - - otgsc = readl(lnw->iotg.base + CI_OTGSC); - usbcfg = readl(lnw->usbcfg); - - dev_dbg(lnw->dev, "OTGSC = %08x, USBCFG = %08x\n", - otgsc, usbcfg); - dev_dbg(lnw->dev, "OTGSC_AVV = %d\n", !!(otgsc & OTGSC_AVV)); - dev_dbg(lnw->dev, "USBCFG.VBUSVAL = %d\n", - !!(usbcfg & USBCFG_VBUSVAL)); - dev_dbg(lnw->dev, "OTGSC_ASV = %d\n", !!(otgsc & OTGSC_ASV)); - dev_dbg(lnw->dev, "USBCFG.AVALID = %d\n", - !!(usbcfg & USBCFG_AVALID)); - dev_dbg(lnw->dev, "OTGSC_BSV = %d\n", !!(otgsc & OTGSC_BSV)); - dev_dbg(lnw->dev, "USBCFG.BVALID = %d\n", - !!(usbcfg & USBCFG_BVALID)); - dev_dbg(lnw->dev, "OTGSC_BSE = %d\n", !!(otgsc & OTGSC_BSE)); - dev_dbg(lnw->dev, "USBCFG.SESEND = %d\n", - !!(usbcfg & USBCFG_SESEND)); - - /* Check USBCFG VBusValid/AValid/BValid/SessEnd */ - if (!!(otgsc & OTGSC_AVV) ^ !!(usbcfg & USBCFG_VBUSVAL)) { - dev_dbg(lnw->dev, "OTGSC.AVV != USBCFG.VBUSVAL\n"); - goto err; - } - if (!!(otgsc & OTGSC_ASV) ^ !!(usbcfg & USBCFG_AVALID)) { - dev_dbg(lnw->dev, "OTGSC.ASV != USBCFG.AVALID\n"); - goto err; - } - if (!!(otgsc & OTGSC_BSV) ^ !!(usbcfg & USBCFG_BVALID)) { - dev_dbg(lnw->dev, "OTGSC.BSV != USBCFG.BVALID\n"); - goto err; - } - if (!!(otgsc & OTGSC_BSE) ^ !!(usbcfg & USBCFG_SESEND)) { - dev_dbg(lnw->dev, "OTGSC.BSE != USBCFG.SESSEN\n"); - goto err; - } - - dev_dbg(lnw->dev, "OTGSC and USBCFG are synced\n"); - - return 0; - -err: - dev_warn(lnw->dev, "OTGSC isn't equal to USBCFG\n"); - return -EPIPE; -} - - -static void langwell_otg_phy_low_power(int on) -{ - struct langwell_otg *lnw = the_transceiver; - struct intel_mid_otg_xceiv *iotg = &lnw->iotg; - u8 val, phcd; - int retval; - - dev_dbg(lnw->dev, "%s ---> %s mode\n", - __func__, on ? "Low power" : "Normal"); - - phcd = 0x40; - - val = readb(iotg->base + CI_HOSTPC1 + 2); - - if (on) { - /* Due to hardware issue, after set PHCD, sync will failed - * between USBCFG and OTGSC, so before set PHCD, check if - * sync is in process now. If the answer is "yes", then do - * not touch PHCD bit */ - retval = langwell_otg_check_otgsc(); - if (retval) { - dev_dbg(lnw->dev, "Skip PHCD programming..\n"); - return ; - } - - writeb(val | phcd, iotg->base + CI_HOSTPC1 + 2); - } else - writeb(val & ~phcd, iotg->base + CI_HOSTPC1 + 2); - - dev_dbg(lnw->dev, "%s <--- done\n", __func__); -} - -/* After drv vbus, add 5 ms delay to set PHCD */ -static void langwell_otg_phy_low_power_wait(int on) -{ - struct langwell_otg *lnw = the_transceiver; - - dev_dbg(lnw->dev, "add 5ms delay before programing PHCD\n"); - - mdelay(5); - langwell_otg_phy_low_power(on); -} - -/* Enable/Disable OTG interrupt */ -static void langwell_otg_intr(int on) -{ - struct langwell_otg *lnw = the_transceiver; - struct intel_mid_otg_xceiv *iotg = &lnw->iotg; - u32 val; - - dev_dbg(lnw->dev, "%s ---> %s\n", __func__, on ? "on" : "off"); - - val = readl(iotg->base + CI_OTGSC); - - /* OTGSC_INT_MASK doesn't contains 1msInt */ - if (on) { - val = val | (OTGSC_INT_MASK); - writel(val, iotg->base + CI_OTGSC); - } else { - val = val & ~(OTGSC_INT_MASK); - writel(val, iotg->base + CI_OTGSC); - } - - dev_dbg(lnw->dev, "%s <---\n", __func__); -} - -/* set HAAR: Hardware Assist Auto-Reset */ -static void langwell_otg_HAAR(int on) -{ - struct langwell_otg *lnw = the_transceiver; - struct intel_mid_otg_xceiv *iotg = &lnw->iotg; - u32 val; - - dev_dbg(lnw->dev, "%s ---> %s\n", __func__, on ? "on" : "off"); - - val = readl(iotg->base + CI_OTGSC); - if (on) - writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_HAAR, - iotg->base + CI_OTGSC); - else - writel((val & ~OTGSC_INTSTS_MASK) & ~OTGSC_HAAR, - iotg->base + CI_OTGSC); - - dev_dbg(lnw->dev, "%s <---\n", __func__); -} - -/* set HABA: Hardware Assist B-Disconnect to A-Connect */ -static void langwell_otg_HABA(int on) -{ - struct langwell_otg *lnw = the_transceiver; - struct intel_mid_otg_xceiv *iotg = &lnw->iotg; - u32 val; - - dev_dbg(lnw->dev, "%s ---> %s\n", __func__, on ? "on" : "off"); - - val = readl(iotg->base + CI_OTGSC); - if (on) - writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_HABA, - iotg->base + CI_OTGSC); - else - writel((val & ~OTGSC_INTSTS_MASK) & ~OTGSC_HABA, - iotg->base + CI_OTGSC); - - dev_dbg(lnw->dev, "%s <---\n", __func__); -} - -static int langwell_otg_check_se0_srp(int on) -{ - struct langwell_otg *lnw = the_transceiver; - int delay_time = TB_SE0_SRP * 10; - u32 val; - - dev_dbg(lnw->dev, "%s --->\n", __func__); - - do { - udelay(100); - if (!delay_time--) - break; - val = readl(lnw->iotg.base + CI_PORTSC1); - val &= PORTSC_LS; - } while (!val); - - dev_dbg(lnw->dev, "%s <---\n", __func__); - return val; -} - -/* The timeout callback function to set time out bit */ -static void set_tmout(unsigned long indicator) -{ - *(int *)indicator = 1; -} - -void langwell_otg_nsf_msg(unsigned long indicator) -{ - struct langwell_otg *lnw = the_transceiver; - - switch (indicator) { - case 2: - case 4: - case 6: - case 7: - dev_warn(lnw->dev, - "OTG:NSF-%lu - deivce not responding\n", indicator); - break; - case 3: - dev_warn(lnw->dev, - "OTG:NSF-%lu - deivce not supported\n", indicator); - break; - default: - dev_warn(lnw->dev, "Do not have this kind of NSF\n"); - break; - } -} - -/* Initialize timers */ -static int langwell_otg_init_timers(struct otg_hsm *hsm) -{ - /* HSM used timers */ - a_wait_vrise_tmr = otg_timer_initializer(&set_tmout, TA_WAIT_VRISE, - (unsigned long)&hsm->a_wait_vrise_tmout); - if (a_wait_vrise_tmr == NULL) - return -ENOMEM; - a_aidl_bdis_tmr = otg_timer_initializer(&set_tmout, TA_AIDL_BDIS, - (unsigned long)&hsm->a_aidl_bdis_tmout); - if (a_aidl_bdis_tmr == NULL) - return -ENOMEM; - b_se0_srp_tmr = otg_timer_initializer(&set_tmout, TB_SE0_SRP, - (unsigned long)&hsm->b_se0_srp); - if (b_se0_srp_tmr == NULL) - return -ENOMEM; - b_srp_init_tmr = otg_timer_initializer(&set_tmout, TB_SRP_INIT, - (unsigned long)&hsm->b_srp_init_tmout); - if (b_srp_init_tmr == NULL) - return -ENOMEM; - - return 0; -} - -/* Free timers */ -static void langwell_otg_free_timers(void) -{ - kfree(a_wait_vrise_tmr); - kfree(a_aidl_bdis_tmr); - kfree(b_se0_srp_tmr); - kfree(b_srp_init_tmr); -} - -/* The timeout callback function to set time out bit */ -static void langwell_otg_timer_fn(unsigned long indicator) -{ - struct langwell_otg *lnw = the_transceiver; - - *(int *)indicator = 1; - - dev_dbg(lnw->dev, "kernel timer - timeout\n"); - - langwell_update_transceiver(); -} - -/* kernel timer used instead of HW based interrupt */ -static void langwell_otg_add_ktimer(enum langwell_otg_timer_type timers) -{ - struct langwell_otg *lnw = the_transceiver; - struct intel_mid_otg_xceiv *iotg = &lnw->iotg; - unsigned long j = jiffies; - unsigned long data, time; - - switch (timers) { - case TA_WAIT_VRISE_TMR: - iotg->hsm.a_wait_vrise_tmout = 0; - data = (unsigned long)&iotg->hsm.a_wait_vrise_tmout; - time = TA_WAIT_VRISE; - break; - case TA_WAIT_BCON_TMR: - iotg->hsm.a_wait_bcon_tmout = 0; - data = (unsigned long)&iotg->hsm.a_wait_bcon_tmout; - time = TA_WAIT_BCON; - break; - case TA_AIDL_BDIS_TMR: - iotg->hsm.a_aidl_bdis_tmout = 0; - data = (unsigned long)&iotg->hsm.a_aidl_bdis_tmout; - time = TA_AIDL_BDIS; - break; - case TB_ASE0_BRST_TMR: - iotg->hsm.b_ase0_brst_tmout = 0; - data = (unsigned long)&iotg->hsm.b_ase0_brst_tmout; - time = TB_ASE0_BRST; - break; - case TB_SRP_INIT_TMR: - iotg->hsm.b_srp_init_tmout = 0; - data = (unsigned long)&iotg->hsm.b_srp_init_tmout; - time = TB_SRP_INIT; - break; - case TB_SRP_FAIL_TMR: - iotg->hsm.b_srp_fail_tmout = 0; - data = (unsigned long)&iotg->hsm.b_srp_fail_tmout; - time = TB_SRP_FAIL; - break; - case TB_BUS_SUSPEND_TMR: - iotg->hsm.b_bus_suspend_tmout = 0; - data = (unsigned long)&iotg->hsm.b_bus_suspend_tmout; - time = TB_BUS_SUSPEND; - break; - default: - dev_dbg(lnw->dev, "unknown timer, cannot enable it\n"); - return; - } - - lnw->hsm_timer.data = data; - lnw->hsm_timer.function = langwell_otg_timer_fn; - lnw->hsm_timer.expires = j + time * HZ / 1000; /* milliseconds */ - - add_timer(&lnw->hsm_timer); - - dev_dbg(lnw->dev, "add timer successfully\n"); -} - -/* Add timer to timer list */ -static void langwell_otg_add_timer(void *gtimer) -{ - struct langwell_otg_timer *timer = (struct langwell_otg_timer *)gtimer; - struct langwell_otg_timer *tmp_timer; - struct intel_mid_otg_xceiv *iotg = &the_transceiver->iotg; - u32 val32; - - /* Check if the timer is already in the active list, - * if so update timer count - */ - list_for_each_entry(tmp_timer, &active_timers, list) - if (tmp_timer == timer) { - timer->count = timer->expires; - return; - } - timer->count = timer->expires; - - if (list_empty(&active_timers)) { - val32 = readl(iotg->base + CI_OTGSC); - writel(val32 | OTGSC_1MSE, iotg->base + CI_OTGSC); - } - - list_add_tail(&timer->list, &active_timers); -} - -/* Remove timer from the timer list; clear timeout status */ -static void langwell_otg_del_timer(void *gtimer) -{ - struct langwell_otg *lnw = the_transceiver; - struct langwell_otg_timer *timer = (struct langwell_otg_timer *)gtimer; - struct langwell_otg_timer *tmp_timer, *del_tmp; - u32 val32; - - list_for_each_entry_safe(tmp_timer, del_tmp, &active_timers, list) - if (tmp_timer == timer) - list_del(&timer->list); - - if (list_empty(&active_timers)) { - val32 = readl(lnw->iotg.base + CI_OTGSC); - writel(val32 & ~OTGSC_1MSE, lnw->iotg.base + CI_OTGSC); - } -} - -/* Reduce timer count by 1, and find timeout conditions.*/ -static int langwell_otg_tick_timer(u32 *int_sts) -{ - struct langwell_otg *lnw = the_transceiver; - struct langwell_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; - } - } - - if (list_empty(&active_timers)) { - dev_dbg(lnw->dev, "tick timer: disable 1ms int\n"); - *int_sts = *int_sts & ~OTGSC_1MSE; - } - return expired; -} - -static void reset_otg(void) -{ - struct langwell_otg *lnw = the_transceiver; - int delay_time = 1000; - u32 val; - - dev_dbg(lnw->dev, "reseting OTG controller ...\n"); - val = readl(lnw->iotg.base + CI_USBCMD); - writel(val | USBCMD_RST, lnw->iotg.base + CI_USBCMD); - do { - udelay(100); - if (!delay_time--) - dev_dbg(lnw->dev, "reset timeout\n"); - val = readl(lnw->iotg.base + CI_USBCMD); - val &= USBCMD_RST; - } while (val != 0); - dev_dbg(lnw->dev, "reset done.\n"); -} - -static void set_host_mode(void) -{ - struct langwell_otg *lnw = the_transceiver; - u32 val; - - reset_otg(); - val = readl(lnw->iotg.base + CI_USBMODE); - val = (val & (~USBMODE_CM)) | USBMODE_HOST; - writel(val, lnw->iotg.base + CI_USBMODE); -} - -static void set_client_mode(void) -{ - struct langwell_otg *lnw = the_transceiver; - u32 val; - - reset_otg(); - val = readl(lnw->iotg.base + CI_USBMODE); - val = (val & (~USBMODE_CM)) | USBMODE_DEVICE; - writel(val, lnw->iotg.base + CI_USBMODE); -} - -static void init_hsm(void) -{ - struct langwell_otg *lnw = the_transceiver; - struct intel_mid_otg_xceiv *iotg = &lnw->iotg; - u32 val32; - - /* read OTGSC after reset */ - val32 = readl(lnw->iotg.base + CI_OTGSC); - dev_dbg(lnw->dev, "%s: OTGSC init value = 0x%x\n", __func__, val32); - - /* set init state */ - if (val32 & OTGSC_ID) { - iotg->hsm.id = 1; - iotg->otg.default_a = 0; - set_client_mode(); - iotg->otg.state = OTG_STATE_B_IDLE; - } else { - iotg->hsm.id = 0; - iotg->otg.default_a = 1; - set_host_mode(); - iotg->otg.state = OTG_STATE_A_IDLE; - } - - /* set session indicator */ - if (val32 & OTGSC_BSE) - iotg->hsm.b_sess_end = 1; - if (val32 & OTGSC_BSV) - iotg->hsm.b_sess_vld = 1; - if (val32 & OTGSC_ASV) - iotg->hsm.a_sess_vld = 1; - if (val32 & OTGSC_AVV) - iotg->hsm.a_vbus_vld = 1; - - /* defautly power the bus */ - iotg->hsm.a_bus_req = 1; - iotg->hsm.a_bus_drop = 0; - /* defautly don't request bus as B device */ - iotg->hsm.b_bus_req = 0; - /* no system error */ - iotg->hsm.a_clr_err = 0; - - langwell_otg_phy_low_power_wait(1); -} - -static void update_hsm(void) -{ - struct langwell_otg *lnw = the_transceiver; - struct intel_mid_otg_xceiv *iotg = &lnw->iotg; - u32 val32; - - /* read OTGSC */ - val32 = readl(lnw->iotg.base + CI_OTGSC); - dev_dbg(lnw->dev, "%s: OTGSC value = 0x%x\n", __func__, val32); - - iotg->hsm.id = !!(val32 & OTGSC_ID); - iotg->hsm.b_sess_end = !!(val32 & OTGSC_BSE); - iotg->hsm.b_sess_vld = !!(val32 & OTGSC_BSV); - iotg->hsm.a_sess_vld = !!(val32 & OTGSC_ASV); - iotg->hsm.a_vbus_vld = !!(val32 & OTGSC_AVV); -} - -static irqreturn_t otg_dummy_irq(int irq, void *_dev) -{ - struct langwell_otg *lnw = the_transceiver; - void __iomem *reg_base = _dev; - u32 val; - u32 int_mask = 0; - - val = readl(reg_base + CI_USBMODE); - if ((val & USBMODE_CM) != USBMODE_DEVICE) - return IRQ_NONE; - - val = readl(reg_base + CI_USBSTS); - int_mask = val & INTR_DUMMY_MASK; - - if (int_mask == 0) - return IRQ_NONE; - - /* clear hsm.b_conn here since host driver can't detect it - * otg_dummy_irq called means B-disconnect happened. - */ - if (lnw->iotg.hsm.b_conn) { - lnw->iotg.hsm.b_conn = 0; - if (spin_trylock(&lnw->wq_lock)) { - langwell_update_transceiver(); - spin_unlock(&lnw->wq_lock); - } - } - - /* Clear interrupts */ - writel(int_mask, reg_base + CI_USBSTS); - return IRQ_HANDLED; -} - -static irqreturn_t otg_irq(int irq, void *_dev) -{ - struct langwell_otg *lnw = _dev; - struct intel_mid_otg_xceiv *iotg = &lnw->iotg; - u32 int_sts, int_en; - u32 int_mask = 0; - int flag = 0; - - int_sts = readl(lnw->iotg.base + CI_OTGSC); - int_en = (int_sts & OTGSC_INTEN_MASK) >> 8; - int_mask = int_sts & int_en; - if (int_mask == 0) - return IRQ_NONE; - - if (int_mask & OTGSC_IDIS) { - dev_dbg(lnw->dev, "%s: id change int\n", __func__); - iotg->hsm.id = (int_sts & OTGSC_ID) ? 1 : 0; - dev_dbg(lnw->dev, "id = %d\n", iotg->hsm.id); - flag = 1; - } - if (int_mask & OTGSC_DPIS) { - dev_dbg(lnw->dev, "%s: data pulse int\n", __func__); - iotg->hsm.a_srp_det = (int_sts & OTGSC_DPS) ? 1 : 0; - dev_dbg(lnw->dev, "data pulse = %d\n", iotg->hsm.a_srp_det); - flag = 1; - } - if (int_mask & OTGSC_BSEIS) { - dev_dbg(lnw->dev, "%s: b session end int\n", __func__); - iotg->hsm.b_sess_end = (int_sts & OTGSC_BSE) ? 1 : 0; - dev_dbg(lnw->dev, "b_sess_end = %d\n", iotg->hsm.b_sess_end); - flag = 1; - } - if (int_mask & OTGSC_BSVIS) { - dev_dbg(lnw->dev, "%s: b session valid int\n", __func__); - iotg->hsm.b_sess_vld = (int_sts & OTGSC_BSV) ? 1 : 0; - dev_dbg(lnw->dev, "b_sess_vld = %d\n", iotg->hsm.b_sess_end); - flag = 1; - } - if (int_mask & OTGSC_ASVIS) { - dev_dbg(lnw->dev, "%s: a session valid int\n", __func__); - iotg->hsm.a_sess_vld = (int_sts & OTGSC_ASV) ? 1 : 0; - dev_dbg(lnw->dev, "a_sess_vld = %d\n", iotg->hsm.a_sess_vld); - flag = 1; - } - if (int_mask & OTGSC_AVVIS) { - dev_dbg(lnw->dev, "%s: a vbus valid int\n", __func__); - iotg->hsm.a_vbus_vld = (int_sts & OTGSC_AVV) ? 1 : 0; - dev_dbg(lnw->dev, "a_vbus_vld = %d\n", iotg->hsm.a_vbus_vld); - flag = 1; - } - - if (int_mask & OTGSC_1MSS) { - /* need to schedule otg_work if any timer is expired */ - if (langwell_otg_tick_timer(&int_sts)) - flag = 1; - } - - writel((int_sts & ~OTGSC_INTSTS_MASK) | int_mask, - lnw->iotg.base + CI_OTGSC); - if (flag) - langwell_update_transceiver(); - - return IRQ_HANDLED; -} - -static int langwell_otg_iotg_notify(struct notifier_block *nb, - unsigned long action, void *data) -{ - struct langwell_otg *lnw = the_transceiver; - struct intel_mid_otg_xceiv *iotg = data; - int flag = 0; - - if (iotg == NULL) - return NOTIFY_BAD; - - if (lnw == NULL) - return NOTIFY_BAD; - - switch (action) { - case MID_OTG_NOTIFY_CONNECT: - dev_dbg(lnw->dev, "Lnw OTG Notify Connect Event\n"); - if (iotg->otg.default_a == 1) - iotg->hsm.b_conn = 1; - else - iotg->hsm.a_conn = 1; - flag = 1; - break; - case MID_OTG_NOTIFY_DISCONN: - dev_dbg(lnw->dev, "Lnw OTG Notify Disconnect Event\n"); - if (iotg->otg.default_a == 1) - iotg->hsm.b_conn = 0; - else - iotg->hsm.a_conn = 0; - flag = 1; - break; - case MID_OTG_NOTIFY_HSUSPEND: - dev_dbg(lnw->dev, "Lnw OTG Notify Host Bus suspend Event\n"); - if (iotg->otg.default_a == 1) - iotg->hsm.a_suspend_req = 1; - else - iotg->hsm.b_bus_req = 0; - flag = 1; - break; - case MID_OTG_NOTIFY_HRESUME: - dev_dbg(lnw->dev, "Lnw OTG Notify Host Bus resume Event\n"); - if (iotg->otg.default_a == 1) - iotg->hsm.b_bus_resume = 1; - flag = 1; - break; - case MID_OTG_NOTIFY_CSUSPEND: - dev_dbg(lnw->dev, "Lnw OTG Notify Client Bus suspend Event\n"); - if (iotg->otg.default_a == 1) { - if (iotg->hsm.b_bus_suspend_vld == 2) { - iotg->hsm.b_bus_suspend = 1; - iotg->hsm.b_bus_suspend_vld = 0; - flag = 1; - } else { - iotg->hsm.b_bus_suspend_vld++; - flag = 0; - } - } else { - if (iotg->hsm.a_bus_suspend == 0) { - iotg->hsm.a_bus_suspend = 1; - flag = 1; - } - } - break; - case MID_OTG_NOTIFY_CRESUME: - dev_dbg(lnw->dev, "Lnw OTG Notify Client Bus resume Event\n"); - if (iotg->otg.default_a == 0) - iotg->hsm.a_bus_suspend = 0; - flag = 0; - break; - case MID_OTG_NOTIFY_HOSTADD: - dev_dbg(lnw->dev, "Lnw OTG Nofity Host Driver Add\n"); - flag = 1; - break; - case MID_OTG_NOTIFY_HOSTREMOVE: - dev_dbg(lnw->dev, "Lnw OTG Nofity Host Driver remove\n"); - flag = 1; - break; - case MID_OTG_NOTIFY_CLIENTADD: - dev_dbg(lnw->dev, "Lnw OTG Nofity Client Driver Add\n"); - flag = 1; - break; - case MID_OTG_NOTIFY_CLIENTREMOVE: - dev_dbg(lnw->dev, "Lnw OTG Nofity Client Driver remove\n"); - flag = 1; - break; - default: - dev_dbg(lnw->dev, "Lnw OTG Nofity unknown notify message\n"); - return NOTIFY_DONE; - } - - if (flag) - langwell_update_transceiver(); - - return NOTIFY_OK; -} - -static void langwell_otg_work(struct work_struct *work) -{ - struct langwell_otg *lnw; - struct intel_mid_otg_xceiv *iotg; - int retval; - struct pci_dev *pdev; - - lnw = container_of(work, struct langwell_otg, work); - iotg = &lnw->iotg; - pdev = to_pci_dev(lnw->dev); - - dev_dbg(lnw->dev, "%s: old state = %s\n", __func__, - otg_state_string(iotg->otg.state)); - - switch (iotg->otg.state) { - case OTG_STATE_UNDEFINED: - case OTG_STATE_B_IDLE: - if (!iotg->hsm.id) { - langwell_otg_del_timer(b_srp_init_tmr); - del_timer_sync(&lnw->hsm_timer); - - iotg->otg.default_a = 1; - iotg->hsm.a_srp_det = 0; - - langwell_otg_chrg_vbus(0); - set_host_mode(); - langwell_otg_phy_low_power(1); - - iotg->otg.state = OTG_STATE_A_IDLE; - langwell_update_transceiver(); - } else if (iotg->hsm.b_sess_vld) { - langwell_otg_del_timer(b_srp_init_tmr); - del_timer_sync(&lnw->hsm_timer); - iotg->hsm.b_sess_end = 0; - iotg->hsm.a_bus_suspend = 0; - langwell_otg_chrg_vbus(0); - - if (lnw->iotg.start_peripheral) { - lnw->iotg.start_peripheral(&lnw->iotg); - iotg->otg.state = OTG_STATE_B_PERIPHERAL; - } else - dev_dbg(lnw->dev, "client driver not loaded\n"); - - } else if (iotg->hsm.b_srp_init_tmout) { - iotg->hsm.b_srp_init_tmout = 0; - dev_warn(lnw->dev, "SRP init timeout\n"); - } else if (iotg->hsm.b_srp_fail_tmout) { - iotg->hsm.b_srp_fail_tmout = 0; - iotg->hsm.b_bus_req = 0; - - /* No silence failure */ - langwell_otg_nsf_msg(6); - } else if (iotg->hsm.b_bus_req && iotg->hsm.b_sess_end) { - del_timer_sync(&lnw->hsm_timer); - /* workaround for b_se0_srp detection */ - retval = langwell_otg_check_se0_srp(0); - if (retval) { - iotg->hsm.b_bus_req = 0; - dev_dbg(lnw->dev, "LS isn't SE0, try later\n"); - } else { - /* clear the PHCD before start srp */ - langwell_otg_phy_low_power(0); - - /* Start SRP */ - langwell_otg_add_timer(b_srp_init_tmr); - iotg->otg.start_srp(&iotg->otg); - langwell_otg_del_timer(b_srp_init_tmr); - langwell_otg_add_ktimer(TB_SRP_FAIL_TMR); - - /* reset PHY low power mode here */ - langwell_otg_phy_low_power_wait(1); - } - } - break; - case OTG_STATE_B_SRP_INIT: - if (!iotg->hsm.id) { - iotg->otg.default_a = 1; - iotg->hsm.a_srp_det = 0; - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - langwell_otg_chrg_vbus(0); - set_host_mode(); - langwell_otg_phy_low_power(1); - iotg->otg.state = OTG_STATE_A_IDLE; - langwell_update_transceiver(); - } else if (iotg->hsm.b_sess_vld) { - langwell_otg_chrg_vbus(0); - if (lnw->iotg.start_peripheral) { - lnw->iotg.start_peripheral(&lnw->iotg); - iotg->otg.state = OTG_STATE_B_PERIPHERAL; - } else - dev_dbg(lnw->dev, "client driver not loaded\n"); - } - break; - case OTG_STATE_B_PERIPHERAL: - if (!iotg->hsm.id) { - iotg->otg.default_a = 1; - iotg->hsm.a_srp_det = 0; - - langwell_otg_chrg_vbus(0); - - if (lnw->iotg.stop_peripheral) - lnw->iotg.stop_peripheral(&lnw->iotg); - else - dev_dbg(lnw->dev, - "client driver has been removed.\n"); - - set_host_mode(); - langwell_otg_phy_low_power(1); - iotg->otg.state = OTG_STATE_A_IDLE; - langwell_update_transceiver(); - } else if (!iotg->hsm.b_sess_vld) { - iotg->hsm.b_hnp_enable = 0; - - if (lnw->iotg.stop_peripheral) - lnw->iotg.stop_peripheral(&lnw->iotg); - else - dev_dbg(lnw->dev, - "client driver has been removed.\n"); - - iotg->otg.state = OTG_STATE_B_IDLE; - } else if (iotg->hsm.b_bus_req && iotg->otg.gadget && - iotg->otg.gadget->b_hnp_enable && - iotg->hsm.a_bus_suspend) { - - if (lnw->iotg.stop_peripheral) - lnw->iotg.stop_peripheral(&lnw->iotg); - else - dev_dbg(lnw->dev, - "client driver has been removed.\n"); - - langwell_otg_HAAR(1); - iotg->hsm.a_conn = 0; - - if (lnw->iotg.start_host) { - lnw->iotg.start_host(&lnw->iotg); - iotg->otg.state = OTG_STATE_B_WAIT_ACON; - } else - dev_dbg(lnw->dev, - "host driver not loaded.\n"); - - iotg->hsm.a_bus_resume = 0; - langwell_otg_add_ktimer(TB_ASE0_BRST_TMR); - } - break; - - case OTG_STATE_B_WAIT_ACON: - if (!iotg->hsm.id) { - /* delete hsm timer for b_ase0_brst_tmr */ - del_timer_sync(&lnw->hsm_timer); - - iotg->otg.default_a = 1; - iotg->hsm.a_srp_det = 0; - - langwell_otg_chrg_vbus(0); - - langwell_otg_HAAR(0); - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - set_host_mode(); - langwell_otg_phy_low_power(1); - iotg->otg.state = OTG_STATE_A_IDLE; - langwell_update_transceiver(); - } else if (!iotg->hsm.b_sess_vld) { - /* delete hsm timer for b_ase0_brst_tmr */ - del_timer_sync(&lnw->hsm_timer); - - iotg->hsm.b_hnp_enable = 0; - iotg->hsm.b_bus_req = 0; - - langwell_otg_chrg_vbus(0); - langwell_otg_HAAR(0); - - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - set_client_mode(); - langwell_otg_phy_low_power(1); - iotg->otg.state = OTG_STATE_B_IDLE; - } else if (iotg->hsm.a_conn) { - /* delete hsm timer for b_ase0_brst_tmr */ - del_timer_sync(&lnw->hsm_timer); - - langwell_otg_HAAR(0); - iotg->otg.state = OTG_STATE_B_HOST; - langwell_update_transceiver(); - } else if (iotg->hsm.a_bus_resume || - iotg->hsm.b_ase0_brst_tmout) { - /* delete hsm timer for b_ase0_brst_tmr */ - del_timer_sync(&lnw->hsm_timer); - - langwell_otg_HAAR(0); - langwell_otg_nsf_msg(7); - - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - iotg->hsm.a_bus_suspend = 0; - iotg->hsm.b_bus_req = 0; - - if (lnw->iotg.start_peripheral) - lnw->iotg.start_peripheral(&lnw->iotg); - else - dev_dbg(lnw->dev, - "client driver not loaded.\n"); - - iotg->otg.state = OTG_STATE_B_PERIPHERAL; - } - break; - - case OTG_STATE_B_HOST: - if (!iotg->hsm.id) { - iotg->otg.default_a = 1; - iotg->hsm.a_srp_det = 0; - - langwell_otg_chrg_vbus(0); - - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - set_host_mode(); - langwell_otg_phy_low_power(1); - iotg->otg.state = OTG_STATE_A_IDLE; - langwell_update_transceiver(); - } else if (!iotg->hsm.b_sess_vld) { - iotg->hsm.b_hnp_enable = 0; - iotg->hsm.b_bus_req = 0; - - langwell_otg_chrg_vbus(0); - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - set_client_mode(); - langwell_otg_phy_low_power(1); - iotg->otg.state = OTG_STATE_B_IDLE; - } else if ((!iotg->hsm.b_bus_req) || - (!iotg->hsm.a_conn)) { - iotg->hsm.b_bus_req = 0; - langwell_otg_loc_sof(0); - - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - iotg->hsm.a_bus_suspend = 0; - - if (lnw->iotg.start_peripheral) - lnw->iotg.start_peripheral(&lnw->iotg); - else - dev_dbg(lnw->dev, - "client driver not loaded.\n"); - - iotg->otg.state = OTG_STATE_B_PERIPHERAL; - } - break; - - case OTG_STATE_A_IDLE: - iotg->otg.default_a = 1; - if (iotg->hsm.id) { - iotg->otg.default_a = 0; - iotg->hsm.b_bus_req = 0; - iotg->hsm.vbus_srp_up = 0; - - langwell_otg_chrg_vbus(0); - set_client_mode(); - langwell_otg_phy_low_power(1); - iotg->otg.state = OTG_STATE_B_IDLE; - langwell_update_transceiver(); - } else if (!iotg->hsm.a_bus_drop && - (iotg->hsm.a_srp_det || iotg->hsm.a_bus_req)) { - langwell_otg_phy_low_power(0); - - /* Turn on VBus */ - iotg->otg.set_vbus(&iotg->otg, true); - - iotg->hsm.vbus_srp_up = 0; - iotg->hsm.a_wait_vrise_tmout = 0; - langwell_otg_add_timer(a_wait_vrise_tmr); - iotg->otg.state = OTG_STATE_A_WAIT_VRISE; - langwell_update_transceiver(); - } else if (!iotg->hsm.a_bus_drop && iotg->hsm.a_sess_vld) { - iotg->hsm.vbus_srp_up = 1; - } else if (!iotg->hsm.a_sess_vld && iotg->hsm.vbus_srp_up) { - msleep(10); - langwell_otg_phy_low_power(0); - - /* Turn on VBus */ - iotg->otg.set_vbus(&iotg->otg, true); - iotg->hsm.a_srp_det = 1; - iotg->hsm.vbus_srp_up = 0; - iotg->hsm.a_wait_vrise_tmout = 0; - langwell_otg_add_timer(a_wait_vrise_tmr); - iotg->otg.state = OTG_STATE_A_WAIT_VRISE; - langwell_update_transceiver(); - } else if (!iotg->hsm.a_sess_vld && - !iotg->hsm.vbus_srp_up) { - langwell_otg_phy_low_power(1); - } - break; - case OTG_STATE_A_WAIT_VRISE: - if (iotg->hsm.id) { - langwell_otg_del_timer(a_wait_vrise_tmr); - iotg->hsm.b_bus_req = 0; - iotg->otg.default_a = 0; - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - set_client_mode(); - langwell_otg_phy_low_power_wait(1); - iotg->otg.state = OTG_STATE_B_IDLE; - } else if (iotg->hsm.a_vbus_vld) { - langwell_otg_del_timer(a_wait_vrise_tmr); - iotg->hsm.b_conn = 0; - if (lnw->iotg.start_host) - lnw->iotg.start_host(&lnw->iotg); - else { - dev_dbg(lnw->dev, "host driver not loaded.\n"); - break; - } - - langwell_otg_add_ktimer(TA_WAIT_BCON_TMR); - iotg->otg.state = OTG_STATE_A_WAIT_BCON; - } else if (iotg->hsm.a_wait_vrise_tmout) { - iotg->hsm.b_conn = 0; - if (iotg->hsm.a_vbus_vld) { - if (lnw->iotg.start_host) - lnw->iotg.start_host(&lnw->iotg); - else { - dev_dbg(lnw->dev, - "host driver not loaded.\n"); - break; - } - langwell_otg_add_ktimer(TA_WAIT_BCON_TMR); - iotg->otg.state = OTG_STATE_A_WAIT_BCON; - } else { - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - langwell_otg_phy_low_power_wait(1); - iotg->otg.state = OTG_STATE_A_VBUS_ERR; - } - } - break; - case OTG_STATE_A_WAIT_BCON: - if (iotg->hsm.id) { - /* delete hsm timer for a_wait_bcon_tmr */ - del_timer_sync(&lnw->hsm_timer); - - iotg->otg.default_a = 0; - iotg->hsm.b_bus_req = 0; - - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - set_client_mode(); - langwell_otg_phy_low_power_wait(1); - iotg->otg.state = OTG_STATE_B_IDLE; - langwell_update_transceiver(); - } else if (!iotg->hsm.a_vbus_vld) { - /* delete hsm timer for a_wait_bcon_tmr */ - del_timer_sync(&lnw->hsm_timer); - - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - langwell_otg_phy_low_power_wait(1); - iotg->otg.state = OTG_STATE_A_VBUS_ERR; - } else if (iotg->hsm.a_bus_drop || - (iotg->hsm.a_wait_bcon_tmout && - !iotg->hsm.a_bus_req)) { - /* delete hsm timer for a_wait_bcon_tmr */ - del_timer_sync(&lnw->hsm_timer); - - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - iotg->otg.state = OTG_STATE_A_WAIT_VFALL; - } else if (iotg->hsm.b_conn) { - /* delete hsm timer for a_wait_bcon_tmr */ - del_timer_sync(&lnw->hsm_timer); - - iotg->hsm.a_suspend_req = 0; - iotg->otg.state = OTG_STATE_A_HOST; - if (iotg->hsm.a_srp_det && iotg->otg.host && - !iotg->otg.host->b_hnp_enable) { - /* SRP capable peripheral-only device */ - iotg->hsm.a_bus_req = 1; - iotg->hsm.a_srp_det = 0; - } else if (!iotg->hsm.a_bus_req && iotg->otg.host && - iotg->otg.host->b_hnp_enable) { - /* It is not safe enough to do a fast - * transition from A_WAIT_BCON to - * A_SUSPEND */ - msleep(10000); - if (iotg->hsm.a_bus_req) - break; - - if (request_irq(pdev->irq, - otg_dummy_irq, IRQF_SHARED, - driver_name, iotg->base) != 0) { - dev_dbg(lnw->dev, - "request interrupt %d fail\n", - pdev->irq); - } - - langwell_otg_HABA(1); - iotg->hsm.b_bus_resume = 0; - iotg->hsm.a_aidl_bdis_tmout = 0; - - langwell_otg_loc_sof(0); - /* clear PHCD to enable HW timer */ - langwell_otg_phy_low_power(0); - langwell_otg_add_timer(a_aidl_bdis_tmr); - iotg->otg.state = OTG_STATE_A_SUSPEND; - } else if (!iotg->hsm.a_bus_req && iotg->otg.host && - !iotg->otg.host->b_hnp_enable) { - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver removed.\n"); - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - iotg->otg.state = OTG_STATE_A_WAIT_VFALL; - } - } - break; - case OTG_STATE_A_HOST: - if (iotg->hsm.id) { - iotg->otg.default_a = 0; - iotg->hsm.b_bus_req = 0; - - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - set_client_mode(); - langwell_otg_phy_low_power_wait(1); - iotg->otg.state = OTG_STATE_B_IDLE; - langwell_update_transceiver(); - } else if (iotg->hsm.a_bus_drop || - (iotg->otg.host && - !iotg->otg.host->b_hnp_enable && - !iotg->hsm.a_bus_req)) { - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - iotg->otg.state = OTG_STATE_A_WAIT_VFALL; - } else if (!iotg->hsm.a_vbus_vld) { - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - langwell_otg_phy_low_power_wait(1); - iotg->otg.state = OTG_STATE_A_VBUS_ERR; - } else if (iotg->otg.host && - iotg->otg.host->b_hnp_enable && - !iotg->hsm.a_bus_req) { - /* Set HABA to enable hardware assistance to signal - * A-connect after receiver B-disconnect. Hardware - * will then set client mode and enable URE, SLE and - * PCE after the assistance. otg_dummy_irq is used to - * clean these ints when client driver is not resumed. - */ - if (request_irq(pdev->irq, otg_dummy_irq, IRQF_SHARED, - driver_name, iotg->base) != 0) { - dev_dbg(lnw->dev, - "request interrupt %d failed\n", - pdev->irq); - } - - /* set HABA */ - langwell_otg_HABA(1); - iotg->hsm.b_bus_resume = 0; - iotg->hsm.a_aidl_bdis_tmout = 0; - langwell_otg_loc_sof(0); - /* clear PHCD to enable HW timer */ - langwell_otg_phy_low_power(0); - langwell_otg_add_timer(a_aidl_bdis_tmr); - iotg->otg.state = OTG_STATE_A_SUSPEND; - } else if (!iotg->hsm.b_conn || !iotg->hsm.a_bus_req) { - langwell_otg_add_ktimer(TA_WAIT_BCON_TMR); - iotg->otg.state = OTG_STATE_A_WAIT_BCON; - } - break; - case OTG_STATE_A_SUSPEND: - if (iotg->hsm.id) { - langwell_otg_del_timer(a_aidl_bdis_tmr); - langwell_otg_HABA(0); - free_irq(pdev->irq, iotg->base); - iotg->otg.default_a = 0; - iotg->hsm.b_bus_req = 0; - - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - set_client_mode(); - langwell_otg_phy_low_power(1); - iotg->otg.state = OTG_STATE_B_IDLE; - langwell_update_transceiver(); - } else if (iotg->hsm.a_bus_req || - iotg->hsm.b_bus_resume) { - langwell_otg_del_timer(a_aidl_bdis_tmr); - langwell_otg_HABA(0); - free_irq(pdev->irq, iotg->base); - iotg->hsm.a_suspend_req = 0; - langwell_otg_loc_sof(1); - iotg->otg.state = OTG_STATE_A_HOST; - } else if (iotg->hsm.a_aidl_bdis_tmout || - iotg->hsm.a_bus_drop) { - langwell_otg_del_timer(a_aidl_bdis_tmr); - langwell_otg_HABA(0); - free_irq(pdev->irq, iotg->base); - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - iotg->otg.state = OTG_STATE_A_WAIT_VFALL; - } else if (!iotg->hsm.b_conn && iotg->otg.host && - iotg->otg.host->b_hnp_enable) { - langwell_otg_del_timer(a_aidl_bdis_tmr); - langwell_otg_HABA(0); - free_irq(pdev->irq, iotg->base); - - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - iotg->hsm.b_bus_suspend = 0; - iotg->hsm.b_bus_suspend_vld = 0; - - /* msleep(200); */ - if (lnw->iotg.start_peripheral) - lnw->iotg.start_peripheral(&lnw->iotg); - else - dev_dbg(lnw->dev, - "client driver not loaded.\n"); - - langwell_otg_add_ktimer(TB_BUS_SUSPEND_TMR); - iotg->otg.state = OTG_STATE_A_PERIPHERAL; - break; - } else if (!iotg->hsm.a_vbus_vld) { - langwell_otg_del_timer(a_aidl_bdis_tmr); - langwell_otg_HABA(0); - free_irq(pdev->irq, iotg->base); - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver has been removed.\n"); - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - langwell_otg_phy_low_power_wait(1); - iotg->otg.state = OTG_STATE_A_VBUS_ERR; - } - break; - case OTG_STATE_A_PERIPHERAL: - if (iotg->hsm.id) { - /* delete hsm timer for b_bus_suspend_tmr */ - del_timer_sync(&lnw->hsm_timer); - iotg->otg.default_a = 0; - iotg->hsm.b_bus_req = 0; - if (lnw->iotg.stop_peripheral) - lnw->iotg.stop_peripheral(&lnw->iotg); - else - dev_dbg(lnw->dev, - "client driver has been removed.\n"); - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - set_client_mode(); - langwell_otg_phy_low_power_wait(1); - iotg->otg.state = OTG_STATE_B_IDLE; - langwell_update_transceiver(); - } else if (!iotg->hsm.a_vbus_vld) { - /* delete hsm timer for b_bus_suspend_tmr */ - del_timer_sync(&lnw->hsm_timer); - - if (lnw->iotg.stop_peripheral) - lnw->iotg.stop_peripheral(&lnw->iotg); - else - dev_dbg(lnw->dev, - "client driver has been removed.\n"); - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - langwell_otg_phy_low_power_wait(1); - iotg->otg.state = OTG_STATE_A_VBUS_ERR; - } else if (iotg->hsm.a_bus_drop) { - /* delete hsm timer for b_bus_suspend_tmr */ - del_timer_sync(&lnw->hsm_timer); - - if (lnw->iotg.stop_peripheral) - lnw->iotg.stop_peripheral(&lnw->iotg); - else - dev_dbg(lnw->dev, - "client driver has been removed.\n"); - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - iotg->otg.state = OTG_STATE_A_WAIT_VFALL; - } else if (iotg->hsm.b_bus_suspend) { - /* delete hsm timer for b_bus_suspend_tmr */ - del_timer_sync(&lnw->hsm_timer); - - if (lnw->iotg.stop_peripheral) - lnw->iotg.stop_peripheral(&lnw->iotg); - else - dev_dbg(lnw->dev, - "client driver has been removed.\n"); - - if (lnw->iotg.start_host) - lnw->iotg.start_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver not loaded.\n"); - langwell_otg_add_ktimer(TA_WAIT_BCON_TMR); - iotg->otg.state = OTG_STATE_A_WAIT_BCON; - } else if (iotg->hsm.b_bus_suspend_tmout) { - u32 val; - val = readl(lnw->iotg.base + CI_PORTSC1); - if (!(val & PORTSC_SUSP)) - break; - - if (lnw->iotg.stop_peripheral) - lnw->iotg.stop_peripheral(&lnw->iotg); - else - dev_dbg(lnw->dev, - "client driver has been removed.\n"); - - if (lnw->iotg.start_host) - lnw->iotg.start_host(&lnw->iotg); - else - dev_dbg(lnw->dev, - "host driver not loaded.\n"); - langwell_otg_add_ktimer(TA_WAIT_BCON_TMR); - iotg->otg.state = OTG_STATE_A_WAIT_BCON; - } - break; - case OTG_STATE_A_VBUS_ERR: - if (iotg->hsm.id) { - iotg->otg.default_a = 0; - iotg->hsm.a_clr_err = 0; - iotg->hsm.a_srp_det = 0; - set_client_mode(); - langwell_otg_phy_low_power(1); - iotg->otg.state = OTG_STATE_B_IDLE; - langwell_update_transceiver(); - } else if (iotg->hsm.a_clr_err) { - iotg->hsm.a_clr_err = 0; - iotg->hsm.a_srp_det = 0; - reset_otg(); - init_hsm(); - if (iotg->otg.state == OTG_STATE_A_IDLE) - langwell_update_transceiver(); - } else { - /* FW will clear PHCD bit when any VBus - * event detected. Reset PHCD to 1 again */ - langwell_otg_phy_low_power(1); - } - break; - case OTG_STATE_A_WAIT_VFALL: - if (iotg->hsm.id) { - iotg->otg.default_a = 0; - set_client_mode(); - langwell_otg_phy_low_power(1); - iotg->otg.state = OTG_STATE_B_IDLE; - langwell_update_transceiver(); - } else if (iotg->hsm.a_bus_req) { - - /* Turn on VBus */ - iotg->otg.set_vbus(&iotg->otg, true); - iotg->hsm.a_wait_vrise_tmout = 0; - langwell_otg_add_timer(a_wait_vrise_tmr); - iotg->otg.state = OTG_STATE_A_WAIT_VRISE; - } else if (!iotg->hsm.a_sess_vld) { - iotg->hsm.a_srp_det = 0; - set_host_mode(); - langwell_otg_phy_low_power(1); - iotg->otg.state = OTG_STATE_A_IDLE; - } - break; - default: - ; - } - - dev_dbg(lnw->dev, "%s: new state = %s\n", __func__, - otg_state_string(iotg->otg.state)); -} - -static ssize_t -show_registers(struct device *_dev, struct device_attribute *attr, char *buf) -{ - struct langwell_otg *lnw = the_transceiver; - char *next; - unsigned size, t; - - next = buf; - size = PAGE_SIZE; - - t = scnprintf(next, size, - "\n" - "USBCMD = 0x%08x\n" - "USBSTS = 0x%08x\n" - "USBINTR = 0x%08x\n" - "ASYNCLISTADDR = 0x%08x\n" - "PORTSC1 = 0x%08x\n" - "HOSTPC1 = 0x%08x\n" - "OTGSC = 0x%08x\n" - "USBMODE = 0x%08x\n", - readl(lnw->iotg.base + 0x30), - readl(lnw->iotg.base + 0x34), - readl(lnw->iotg.base + 0x38), - readl(lnw->iotg.base + 0x48), - readl(lnw->iotg.base + 0x74), - readl(lnw->iotg.base + 0xb4), - readl(lnw->iotg.base + 0xf4), - readl(lnw->iotg.base + 0xf8) - ); - size -= t; - next += t; - - return PAGE_SIZE - size; -} -static DEVICE_ATTR(registers, S_IRUGO, show_registers, NULL); - -static ssize_t -show_hsm(struct device *_dev, struct device_attribute *attr, char *buf) -{ - struct langwell_otg *lnw = the_transceiver; - struct intel_mid_otg_xceiv *iotg = &lnw->iotg; - char *next; - unsigned size, t; - - next = buf; - size = PAGE_SIZE; - - if (iotg->otg.host) - iotg->hsm.a_set_b_hnp_en = iotg->otg.host->b_hnp_enable; - - if (iotg->otg.gadget) - iotg->hsm.b_hnp_enable = iotg->otg.gadget->b_hnp_enable; - - t = scnprintf(next, size, - "\n" - "current state = %s\n" - "a_bus_resume = \t%d\n" - "a_bus_suspend = \t%d\n" - "a_conn = \t%d\n" - "a_sess_vld = \t%d\n" - "a_srp_det = \t%d\n" - "a_vbus_vld = \t%d\n" - "b_bus_resume = \t%d\n" - "b_bus_suspend = \t%d\n" - "b_conn = \t%d\n" - "b_se0_srp = \t%d\n" - "b_sess_end = \t%d\n" - "b_sess_vld = \t%d\n" - "id = \t%d\n" - "a_set_b_hnp_en = \t%d\n" - "b_srp_done = \t%d\n" - "b_hnp_enable = \t%d\n" - "a_wait_vrise_tmout = \t%d\n" - "a_wait_bcon_tmout = \t%d\n" - "a_aidl_bdis_tmout = \t%d\n" - "b_ase0_brst_tmout = \t%d\n" - "a_bus_drop = \t%d\n" - "a_bus_req = \t%d\n" - "a_clr_err = \t%d\n" - "a_suspend_req = \t%d\n" - "b_bus_req = \t%d\n" - "b_bus_suspend_tmout = \t%d\n" - "b_bus_suspend_vld = \t%d\n", - otg_state_string(iotg->otg.state), - iotg->hsm.a_bus_resume, - iotg->hsm.a_bus_suspend, - iotg->hsm.a_conn, - iotg->hsm.a_sess_vld, - iotg->hsm.a_srp_det, - iotg->hsm.a_vbus_vld, - iotg->hsm.b_bus_resume, - iotg->hsm.b_bus_suspend, - iotg->hsm.b_conn, - iotg->hsm.b_se0_srp, - iotg->hsm.b_sess_end, - iotg->hsm.b_sess_vld, - iotg->hsm.id, - iotg->hsm.a_set_b_hnp_en, - iotg->hsm.b_srp_done, - iotg->hsm.b_hnp_enable, - iotg->hsm.a_wait_vrise_tmout, - iotg->hsm.a_wait_bcon_tmout, - iotg->hsm.a_aidl_bdis_tmout, - iotg->hsm.b_ase0_brst_tmout, - iotg->hsm.a_bus_drop, - iotg->hsm.a_bus_req, - iotg->hsm.a_clr_err, - iotg->hsm.a_suspend_req, - iotg->hsm.b_bus_req, - iotg->hsm.b_bus_suspend_tmout, - iotg->hsm.b_bus_suspend_vld - ); - size -= t; - next += t; - - return PAGE_SIZE - size; -} -static DEVICE_ATTR(hsm, S_IRUGO, show_hsm, NULL); - -static ssize_t -get_a_bus_req(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct langwell_otg *lnw = the_transceiver; - char *next; - unsigned size, t; - - next = buf; - size = PAGE_SIZE; - - t = scnprintf(next, size, "%d", lnw->iotg.hsm.a_bus_req); - size -= t; - next += t; - - return PAGE_SIZE - size; -} - -static ssize_t -set_a_bus_req(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct langwell_otg *lnw = the_transceiver; - struct intel_mid_otg_xceiv *iotg = &lnw->iotg; - - if (!iotg->otg.default_a) - return -1; - if (count > 2) - return -1; - - if (buf[0] == '0') { - iotg->hsm.a_bus_req = 0; - dev_dbg(lnw->dev, "User request: a_bus_req = 0\n"); - } else if (buf[0] == '1') { - /* If a_bus_drop is TRUE, a_bus_req can't be set */ - if (iotg->hsm.a_bus_drop) - return -1; - iotg->hsm.a_bus_req = 1; - dev_dbg(lnw->dev, "User request: a_bus_req = 1\n"); - } - if (spin_trylock(&lnw->wq_lock)) { - langwell_update_transceiver(); - spin_unlock(&lnw->wq_lock); - } - return count; -} -static DEVICE_ATTR(a_bus_req, S_IRUGO | S_IWUSR, get_a_bus_req, set_a_bus_req); - -static ssize_t -get_a_bus_drop(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct langwell_otg *lnw = the_transceiver; - char *next; - unsigned size, t; - - next = buf; - size = PAGE_SIZE; - - t = scnprintf(next, size, "%d", lnw->iotg.hsm.a_bus_drop); - size -= t; - next += t; - - return PAGE_SIZE - size; -} - -static ssize_t -set_a_bus_drop(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct langwell_otg *lnw = the_transceiver; - struct intel_mid_otg_xceiv *iotg = &lnw->iotg; - - if (!iotg->otg.default_a) - return -1; - if (count > 2) - return -1; - - if (buf[0] == '0') { - iotg->hsm.a_bus_drop = 0; - dev_dbg(lnw->dev, "User request: a_bus_drop = 0\n"); - } else if (buf[0] == '1') { - iotg->hsm.a_bus_drop = 1; - iotg->hsm.a_bus_req = 0; - dev_dbg(lnw->dev, "User request: a_bus_drop = 1\n"); - dev_dbg(lnw->dev, "User request: and a_bus_req = 0\n"); - } - if (spin_trylock(&lnw->wq_lock)) { - langwell_update_transceiver(); - spin_unlock(&lnw->wq_lock); - } - return count; -} -static DEVICE_ATTR(a_bus_drop, S_IRUGO | S_IWUSR, get_a_bus_drop, set_a_bus_drop); - -static ssize_t -get_b_bus_req(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct langwell_otg *lnw = the_transceiver; - char *next; - unsigned size, t; - - next = buf; - size = PAGE_SIZE; - - t = scnprintf(next, size, "%d", lnw->iotg.hsm.b_bus_req); - size -= t; - next += t; - - return PAGE_SIZE - size; -} - -static ssize_t -set_b_bus_req(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct langwell_otg *lnw = the_transceiver; - struct intel_mid_otg_xceiv *iotg = &lnw->iotg; - - if (iotg->otg.default_a) - return -1; - - if (count > 2) - return -1; - - if (buf[0] == '0') { - iotg->hsm.b_bus_req = 0; - dev_dbg(lnw->dev, "User request: b_bus_req = 0\n"); - } else if (buf[0] == '1') { - iotg->hsm.b_bus_req = 1; - dev_dbg(lnw->dev, "User request: b_bus_req = 1\n"); - } - if (spin_trylock(&lnw->wq_lock)) { - langwell_update_transceiver(); - spin_unlock(&lnw->wq_lock); - } - return count; -} -static DEVICE_ATTR(b_bus_req, S_IRUGO | S_IWUSR, get_b_bus_req, set_b_bus_req); - -static ssize_t -set_a_clr_err(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct langwell_otg *lnw = the_transceiver; - struct intel_mid_otg_xceiv *iotg = &lnw->iotg; - - if (!iotg->otg.default_a) - return -1; - if (count > 2) - return -1; - - if (buf[0] == '1') { - iotg->hsm.a_clr_err = 1; - dev_dbg(lnw->dev, "User request: a_clr_err = 1\n"); - } - if (spin_trylock(&lnw->wq_lock)) { - langwell_update_transceiver(); - spin_unlock(&lnw->wq_lock); - } - return count; -} -static DEVICE_ATTR(a_clr_err, S_IWUSR, NULL, set_a_clr_err); - -static struct attribute *inputs_attrs[] = { - &dev_attr_a_bus_req.attr, - &dev_attr_a_bus_drop.attr, - &dev_attr_b_bus_req.attr, - &dev_attr_a_clr_err.attr, - NULL, -}; - -static struct attribute_group debug_dev_attr_group = { - .name = "inputs", - .attrs = inputs_attrs, -}; - -static int langwell_otg_probe(struct pci_dev *pdev, - const struct pci_device_id *id) -{ - unsigned long resource, len; - void __iomem *base = NULL; - int retval; - u32 val32; - struct langwell_otg *lnw; - char qname[] = "langwell_otg_queue"; - - retval = 0; - dev_dbg(&pdev->dev, "\notg controller is detected.\n"); - if (pci_enable_device(pdev) < 0) { - retval = -ENODEV; - goto done; - } - - lnw = kzalloc(sizeof *lnw, GFP_KERNEL); - if (lnw == NULL) { - retval = -ENOMEM; - goto done; - } - the_transceiver = lnw; - - /* control register: BAR 0 */ - resource = pci_resource_start(pdev, 0); - len = pci_resource_len(pdev, 0); - if (!request_mem_region(resource, len, driver_name)) { - retval = -EBUSY; - goto err; - } - lnw->region = 1; - - base = ioremap_nocache(resource, len); - if (base == NULL) { - retval = -EFAULT; - goto err; - } - lnw->iotg.base = base; - - if (!request_mem_region(USBCFG_ADDR, USBCFG_LEN, driver_name)) { - retval = -EBUSY; - goto err; - } - lnw->cfg_region = 1; - - /* For the SCCB.USBCFG register */ - base = ioremap_nocache(USBCFG_ADDR, USBCFG_LEN); - if (base == NULL) { - retval = -EFAULT; - goto err; - } - lnw->usbcfg = base; - - if (!pdev->irq) { - dev_dbg(&pdev->dev, "No IRQ.\n"); - retval = -ENODEV; - goto err; - } - - lnw->qwork = create_singlethread_workqueue(qname); - if (!lnw->qwork) { - dev_dbg(&pdev->dev, "cannot create workqueue %s\n", qname); - retval = -ENOMEM; - goto err; - } - INIT_WORK(&lnw->work, langwell_otg_work); - - /* OTG common part */ - lnw->dev = &pdev->dev; - lnw->iotg.otg.dev = lnw->dev; - lnw->iotg.otg.label = driver_name; - lnw->iotg.otg.set_host = langwell_otg_set_host; - lnw->iotg.otg.set_peripheral = langwell_otg_set_peripheral; - lnw->iotg.otg.set_power = langwell_otg_set_power; - lnw->iotg.otg.set_vbus = langwell_otg_set_vbus; - lnw->iotg.otg.start_srp = langwell_otg_start_srp; - lnw->iotg.otg.state = OTG_STATE_UNDEFINED; - - if (otg_set_transceiver(&lnw->iotg.otg)) { - dev_dbg(lnw->dev, "can't set transceiver\n"); - retval = -EBUSY; - goto err; - } - - reset_otg(); - init_hsm(); - - spin_lock_init(&lnw->lock); - spin_lock_init(&lnw->wq_lock); - INIT_LIST_HEAD(&active_timers); - retval = langwell_otg_init_timers(&lnw->iotg.hsm); - if (retval) { - dev_dbg(&pdev->dev, "Failed to init timers\n"); - goto err; - } - - init_timer(&lnw->hsm_timer); - ATOMIC_INIT_NOTIFIER_HEAD(&lnw->iotg.iotg_notifier); - - lnw->iotg_notifier.notifier_call = langwell_otg_iotg_notify; - - retval = intel_mid_otg_register_notifier(&lnw->iotg, - &lnw->iotg_notifier); - if (retval) { - dev_dbg(lnw->dev, "Failed to register notifier\n"); - goto err; - } - - if (request_irq(pdev->irq, otg_irq, IRQF_SHARED, - driver_name, lnw) != 0) { - dev_dbg(lnw->dev, "request interrupt %d failed\n", pdev->irq); - retval = -EBUSY; - goto err; - } - - /* enable OTGSC int */ - val32 = OTGSC_DPIE | OTGSC_BSEIE | OTGSC_BSVIE | - OTGSC_ASVIE | OTGSC_AVVIE | OTGSC_IDIE | OTGSC_IDPU; - writel(val32, lnw->iotg.base + CI_OTGSC); - - retval = device_create_file(&pdev->dev, &dev_attr_registers); - if (retval < 0) { - dev_dbg(lnw->dev, - "Can't register sysfs attribute: %d\n", retval); - goto err; - } - - retval = device_create_file(&pdev->dev, &dev_attr_hsm); - if (retval < 0) { - dev_dbg(lnw->dev, "Can't hsm sysfs attribute: %d\n", retval); - goto err; - } - - retval = sysfs_create_group(&pdev->dev.kobj, &debug_dev_attr_group); - if (retval < 0) { - dev_dbg(lnw->dev, - "Can't register sysfs attr group: %d\n", retval); - goto err; - } - - if (lnw->iotg.otg.state == OTG_STATE_A_IDLE) - langwell_update_transceiver(); - - return 0; - -err: - if (the_transceiver) - langwell_otg_remove(pdev); -done: - return retval; -} - -static void langwell_otg_remove(struct pci_dev *pdev) -{ - struct langwell_otg *lnw = the_transceiver; - - if (lnw->qwork) { - flush_workqueue(lnw->qwork); - destroy_workqueue(lnw->qwork); - } - intel_mid_otg_unregister_notifier(&lnw->iotg, &lnw->iotg_notifier); - langwell_otg_free_timers(); - - /* disable OTGSC interrupt as OTGSC doesn't change in reset */ - writel(0, lnw->iotg.base + CI_OTGSC); - - if (pdev->irq) - free_irq(pdev->irq, lnw); - if (lnw->usbcfg) - iounmap(lnw->usbcfg); - if (lnw->cfg_region) - release_mem_region(USBCFG_ADDR, USBCFG_LEN); - if (lnw->iotg.base) - iounmap(lnw->iotg.base); - if (lnw->region) - release_mem_region(pci_resource_start(pdev, 0), - pci_resource_len(pdev, 0)); - - otg_set_transceiver(NULL); - pci_disable_device(pdev); - sysfs_remove_group(&pdev->dev.kobj, &debug_dev_attr_group); - device_remove_file(&pdev->dev, &dev_attr_hsm); - device_remove_file(&pdev->dev, &dev_attr_registers); - kfree(lnw); - lnw = NULL; -} - -static void transceiver_suspend(struct pci_dev *pdev) -{ - pci_save_state(pdev); - pci_set_power_state(pdev, PCI_D3hot); - langwell_otg_phy_low_power(1); -} - -static int langwell_otg_suspend(struct pci_dev *pdev, pm_message_t message) -{ - struct langwell_otg *lnw = the_transceiver; - struct intel_mid_otg_xceiv *iotg = &lnw->iotg; - int ret = 0; - - /* Disbale OTG interrupts */ - langwell_otg_intr(0); - - if (pdev->irq) - free_irq(pdev->irq, lnw); - - /* Prevent more otg_work */ - flush_workqueue(lnw->qwork); - destroy_workqueue(lnw->qwork); - lnw->qwork = NULL; - - /* start actions */ - switch (iotg->otg.state) { - case OTG_STATE_A_WAIT_VFALL: - iotg->otg.state = OTG_STATE_A_IDLE; - case OTG_STATE_A_IDLE: - case OTG_STATE_B_IDLE: - case OTG_STATE_A_VBUS_ERR: - transceiver_suspend(pdev); - break; - case OTG_STATE_A_WAIT_VRISE: - langwell_otg_del_timer(a_wait_vrise_tmr); - iotg->hsm.a_srp_det = 0; - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - iotg->otg.state = OTG_STATE_A_IDLE; - transceiver_suspend(pdev); - break; - case OTG_STATE_A_WAIT_BCON: - del_timer_sync(&lnw->hsm_timer); - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(&pdev->dev, "host driver has been removed.\n"); - - iotg->hsm.a_srp_det = 0; - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - iotg->otg.state = OTG_STATE_A_IDLE; - transceiver_suspend(pdev); - break; - case OTG_STATE_A_HOST: - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(&pdev->dev, "host driver has been removed.\n"); - - iotg->hsm.a_srp_det = 0; - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - - iotg->otg.state = OTG_STATE_A_IDLE; - transceiver_suspend(pdev); - break; - case OTG_STATE_A_SUSPEND: - langwell_otg_del_timer(a_aidl_bdis_tmr); - langwell_otg_HABA(0); - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(lnw->dev, "host driver has been removed.\n"); - iotg->hsm.a_srp_det = 0; - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - iotg->otg.state = OTG_STATE_A_IDLE; - transceiver_suspend(pdev); - break; - case OTG_STATE_A_PERIPHERAL: - del_timer_sync(&lnw->hsm_timer); - - if (lnw->iotg.stop_peripheral) - lnw->iotg.stop_peripheral(&lnw->iotg); - else - dev_dbg(&pdev->dev, - "client driver has been removed.\n"); - iotg->hsm.a_srp_det = 0; - - /* Turn off VBus */ - iotg->otg.set_vbus(&iotg->otg, false); - iotg->otg.state = OTG_STATE_A_IDLE; - transceiver_suspend(pdev); - break; - case OTG_STATE_B_HOST: - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(&pdev->dev, "host driver has been removed.\n"); - iotg->hsm.b_bus_req = 0; - iotg->otg.state = OTG_STATE_B_IDLE; - transceiver_suspend(pdev); - break; - case OTG_STATE_B_PERIPHERAL: - if (lnw->iotg.stop_peripheral) - lnw->iotg.stop_peripheral(&lnw->iotg); - else - dev_dbg(&pdev->dev, - "client driver has been removed.\n"); - iotg->otg.state = OTG_STATE_B_IDLE; - transceiver_suspend(pdev); - break; - case OTG_STATE_B_WAIT_ACON: - /* delete hsm timer for b_ase0_brst_tmr */ - del_timer_sync(&lnw->hsm_timer); - - langwell_otg_HAAR(0); - - if (lnw->iotg.stop_host) - lnw->iotg.stop_host(&lnw->iotg); - else - dev_dbg(&pdev->dev, "host driver has been removed.\n"); - iotg->hsm.b_bus_req = 0; - iotg->otg.state = OTG_STATE_B_IDLE; - transceiver_suspend(pdev); - break; - default: - dev_dbg(lnw->dev, "error state before suspend\n"); - break; - } - - return ret; -} - -static void transceiver_resume(struct pci_dev *pdev) -{ - pci_restore_state(pdev); - pci_set_power_state(pdev, PCI_D0); -} - -static int langwell_otg_resume(struct pci_dev *pdev) -{ - struct langwell_otg *lnw = the_transceiver; - int ret = 0; - - transceiver_resume(pdev); - - lnw->qwork = create_singlethread_workqueue("langwell_otg_queue"); - if (!lnw->qwork) { - dev_dbg(&pdev->dev, "cannot create langwell otg workqueuen"); - ret = -ENOMEM; - goto error; - } - - if (request_irq(pdev->irq, otg_irq, IRQF_SHARED, - driver_name, lnw) != 0) { - dev_dbg(&pdev->dev, "request interrupt %d failed\n", pdev->irq); - ret = -EBUSY; - goto error; - } - - /* enable OTG interrupts */ - langwell_otg_intr(1); - - update_hsm(); - - langwell_update_transceiver(); - - return ret; -error: - langwell_otg_intr(0); - transceiver_suspend(pdev); - return ret; -} - -static int __init langwell_otg_init(void) -{ - return pci_register_driver(&otg_pci_driver); -} -module_init(langwell_otg_init); - -static void __exit langwell_otg_cleanup(void) -{ - pci_unregister_driver(&otg_pci_driver); -} -module_exit(langwell_otg_cleanup); diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c index 528691d5f3e2..7542aa94a462 100644 --- a/drivers/usb/renesas_usbhs/mod_gadget.c +++ b/drivers/usb/renesas_usbhs/mod_gadget.c @@ -425,7 +425,7 @@ static int usbhsg_recip_run_handle(struct usbhs_priv *priv, struct usbhs_pipe *pipe; int recip = ctrl->bRequestType & USB_RECIP_MASK; int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; - int ret; + int ret = 0; int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep, struct usb_ctrlrequest *ctrl); char *msg; |