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author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2012-05-11 17:25:46 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-05-11 16:49:51 -0700 |
commit | e443b333629f82ca0da91a05ca638050943bbedd (patch) | |
tree | d8c2cbf06e7faeef2c062b01271f8987cca23459 /drivers/usb/chipidea/udc.h | |
parent | bc25a80d12ea971ddd652717150058989b1ad474 (diff) | |
download | linux-e443b333629f82ca0da91a05ca638050943bbedd.tar.gz linux-e443b333629f82ca0da91a05ca638050943bbedd.tar.bz2 linux-e443b333629f82ca0da91a05ca638050943bbedd.zip |
usb: chipidea: split the driver code into units
Split the driver into the following parts:
* core -- resources, register access, capabilities, etc;
* udc -- device controller functionality;
* debug -- logging events.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/chipidea/udc.h')
-rw-r--r-- | drivers/usb/chipidea/udc.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/udc.h b/drivers/usb/chipidea/udc.h new file mode 100644 index 000000000000..82c9e3e772f7 --- /dev/null +++ b/drivers/usb/chipidea/udc.h @@ -0,0 +1,96 @@ +/* + * udc.h - ChipIdea UDC structures + * + * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved. + * + * Author: David Lopo + * + * 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 __DRIVERS_USB_CHIPIDEA_UDC_H +#define __DRIVERS_USB_CHIPIDEA_UDC_H + +#include <linux/list.h> + +#define CTRL_PAYLOAD_MAX 64 +#define RX 0 /* similar to USB_DIR_OUT but can be used as an index */ +#define TX 1 /* similar to USB_DIR_IN but can be used as an index */ + +/* DMA layout of transfer descriptors */ +struct ci13xxx_td { + /* 0 */ + u32 next; +#define TD_TERMINATE BIT(0) +#define TD_ADDR_MASK (0xFFFFFFEUL << 5) + /* 1 */ + u32 token; +#define TD_STATUS (0x00FFUL << 0) +#define TD_STATUS_TR_ERR BIT(3) +#define TD_STATUS_DT_ERR BIT(5) +#define TD_STATUS_HALTED BIT(6) +#define TD_STATUS_ACTIVE BIT(7) +#define TD_MULTO (0x0003UL << 10) +#define TD_IOC BIT(15) +#define TD_TOTAL_BYTES (0x7FFFUL << 16) + /* 2 */ + u32 page[5]; +#define TD_CURR_OFFSET (0x0FFFUL << 0) +#define TD_FRAME_NUM (0x07FFUL << 0) +#define TD_RESERVED_MASK (0x0FFFUL << 0) +} __attribute__ ((packed)); + +/* DMA layout of queue heads */ +struct ci13xxx_qh { + /* 0 */ + u32 cap; +#define QH_IOS BIT(15) +#define QH_MAX_PKT (0x07FFUL << 16) +#define QH_ZLT BIT(29) +#define QH_MULT (0x0003UL << 30) + /* 1 */ + u32 curr; + /* 2 - 8 */ + struct ci13xxx_td td; + /* 9 */ + u32 RESERVED; + struct usb_ctrlrequest setup; +} __attribute__ ((packed)); + +/* Extension of usb_request */ +struct ci13xxx_req { + struct usb_request req; + unsigned map; + struct list_head queue; + struct ci13xxx_td *ptr; + dma_addr_t dma; + struct ci13xxx_td *zptr; + dma_addr_t zdma; +}; + +#ifdef CONFIG_USB_CHIPIDEA_UDC +irqreturn_t udc_irq(int irq, void *data); +int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev, + void __iomem *regs, struct ci13xxx **_udc); +void udc_remove(struct ci13xxx *udc); +#else +static inline irqreturn_t udc_irq(int irq, void *data) +{ + return IRQ_NONE; +} + +static inline +int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev, + void __iomem *regs, struct ci13xxx **_udc) +{ + return -ENODEV; +} + +static inline void udc_remove(struct ci13xxx *udc) +{ +} +#endif + +#endif /* __DRIVERS_USB_CHIPIDEA_UDC_H */ |