drivers/usb/dwc3/gadget.h - android_kernel_htc_msm8960 - Gitiles

 /**
  * gadget.h - DesignWare USB3 DRD Gadget Header
  *
  * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
  *
  * Authors: Felipe Balbi <balbi@ti.com>,
  *	    Sebastian Andrzej Siewior <bigeasy@linutronix.de>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions, and the following disclaimer,
  *    without modification.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. The names of the above-listed copyright holders may not be used
  *    to endorse or promote products derived from this software without
  *    specific prior written permission.
  *
  * ALTERNATIVELY, this software may be distributed under the terms of the
  * GNU General Public License ("GPL") version 2, as published by the Free
  * Software Foundation.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 #ifndef __DRIVERS_USB_DWC3_GADGET_H
 #define __DRIVERS_USB_DWC3_GADGET_H

 #include <linux/list.h>
 #include <linux/usb/gadget.h>
 #include "io.h"

 struct dwc3;
 #define to_dwc3_ep(ep)		(container_of(ep, struct dwc3_ep, endpoint))
 #define gadget_to_dwc(g)	(container_of(g, struct dwc3, gadget))

 /* DEPCFG parameter 1 */
 #define DWC3_DEPCFG_INT_NUM(n)		((n) << 0)
 #define DWC3_DEPCFG_XFER_COMPLETE_EN	(1 << 8)
 #define DWC3_DEPCFG_XFER_IN_PROGRESS_EN	(1 << 9)
 #define DWC3_DEPCFG_XFER_NOT_READY_EN	(1 << 10)
 #define DWC3_DEPCFG_FIFO_ERROR_EN	(1 << 11)
 #define DWC3_DEPCFG_STREAM_EVENT_EN	(1 << 13)
 #define DWC3_DEPCFG_BINTERVAL_M1(n)	((n) << 16)
 #define DWC3_DEPCFG_STREAM_CAPABLE	(1 << 24)
 #define DWC3_DEPCFG_EP_NUMBER(n)	((n) << 25)
 #define DWC3_DEPCFG_BULK_BASED		(1 << 30)
 #define DWC3_DEPCFG_FIFO_BASED		(1 << 31)

 /* DEPCFG parameter 0 */
 #define DWC3_DEPCFG_EP_TYPE(n)		((n) << 1)
 #define DWC3_DEPCFG_MAX_PACKET_SIZE(n)	((n) << 3)
 #define DWC3_DEPCFG_FIFO_NUMBER(n)	((n) << 17)
 #define DWC3_DEPCFG_BURST_SIZE(n)	((n) << 22)
 #define DWC3_DEPCFG_DATA_SEQ_NUM(n)	((n) << 26)
 #define DWC3_DEPCFG_IGN_SEQ_NUM		(1 << 31)

 /* DEPXFERCFG parameter 0 */
 #define DWC3_DEPXFERCFG_NUM_XFER_RES(n)	((n) & 0xffff)

 struct dwc3_gadget_ep_cmd_params {
 	u32	param2;
 	u32	param1;
 	u32	param0;
 };

 /* -------------------------------------------------------------------------- */

 struct dwc3_request {
 	struct usb_request	request;
 	struct list_head	list;
 	struct dwc3_ep		*dep;

 	u8			epnum;
 	struct dwc3_trb_hw	*trb;
 	dma_addr_t		trb_dma;

 	unsigned		direction:1;
 	unsigned		mapped:1;
 	unsigned		queued:1;
 };
 #define to_dwc3_request(r)	(container_of(r, struct dwc3_request, request))

 static inline struct dwc3_request *next_request(struct list_head *list)
 {
 	if (list_empty(list))
 		return NULL;

 	return list_first_entry(list, struct dwc3_request, list);
 }

 static inline void dwc3_gadget_move_request_queued(struct dwc3_request *req)
 {
 	struct dwc3_ep		*dep = req->dep;

 	req->queued = true;
 	list_move_tail(&req->list, &dep->req_queued);
 }

 #if defined(CONFIG_USB_GADGET_DWC3) || defined(CONFIG_USB_GADGET_DWC3_MODULE)
 int dwc3_gadget_init(struct dwc3 *dwc);
 void dwc3_gadget_exit(struct dwc3 *dwc);
 #else
 static inline int dwc3_gadget_init(struct dwc3 *dwc) { return 0; }
 static inline void dwc3_gadget_exit(struct dwc3 *dwc) { }
 static inline int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
 		unsigned cmd, struct dwc3_gadget_ep_cmd_params *params)
 {
 	return 0;
 }
 #endif

 void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
 		int status);

 void dwc3_ep0_interrupt(struct dwc3 *dwc, const struct dwc3_event_depevt *event);
 void dwc3_ep0_out_start(struct dwc3 *dwc);
 int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
 		gfp_t gfp_flags);
 int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value);
 int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
 		unsigned cmd, struct dwc3_gadget_ep_cmd_params *params);
 void dwc3_map_buffer_to_dma(struct dwc3_request *req);
 void dwc3_unmap_buffer_from_dma(struct dwc3_request *req);

 /**
  * dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW
  * @dwc: DesignWare USB3 Pointer
  * @number: DWC endpoint number
  *
  * Caller should take care of locking
  */
 static inline u32 dwc3_gadget_ep_get_transfer_index(struct dwc3 *dwc, u8 number)
 {
 	u32			res_id;

 	res_id = dwc3_readl(dwc->regs, DWC3_DEPCMD(number));

 	return DWC3_DEPCMD_GET_RSC_IDX(res_id);
 }

 /**
  * dwc3_gadget_event_string - returns event name
  * @event: the event code
  */
 static inline const char *dwc3_gadget_event_string(u8 event)
 {
 	switch (event) {
 	case DWC3_DEVICE_EVENT_DISCONNECT:
 		return "Disconnect";
 	case DWC3_DEVICE_EVENT_RESET:
 		return "Reset";
 	case DWC3_DEVICE_EVENT_CONNECT_DONE:
 		return "Connection Done";
 	case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE:
 		return "Link Status Change";
 	case DWC3_DEVICE_EVENT_WAKEUP:
 		return "WakeUp";
 	case DWC3_DEVICE_EVENT_EOPF:
 		return "End-Of-Frame";
 	case DWC3_DEVICE_EVENT_SOF:
 		return "Start-Of-Frame";
 	case DWC3_DEVICE_EVENT_ERRATIC_ERROR:
 		return "Erratic Error";
 	case DWC3_DEVICE_EVENT_CMD_CMPL:
 		return "Command Complete";
 	case DWC3_DEVICE_EVENT_OVERFLOW:
 		return "Overflow";
 	}

 	return "UNKNOWN";
 }

 /**
  * dwc3_ep_event_string - returns event name
  * @event: then event code
  */
 static inline const char *dwc3_ep_event_string(u8 event)
 {
 	switch (event) {
 	case DWC3_DEPEVT_XFERCOMPLETE:
 		return "Transfer Complete";
 	case DWC3_DEPEVT_XFERINPROGRESS:
 		return "Transfer In-Progress";
 	case DWC3_DEPEVT_XFERNOTREADY:
 		return "Transfer Not Ready";
 	case DWC3_DEPEVT_RXTXFIFOEVT:
 		return "FIFO";
 	case DWC3_DEPEVT_STREAMEVT:
 		return "Stream";
 	case DWC3_DEPEVT_EPCMDCMPLT:
 		return "Endpoint Command Complete";
 	}

 	return "UNKNOWN";
 }

 #endif /* __DRIVERS_USB_DWC3_GADGET_H */
	/**
	* gadget.h - DesignWare USB3 DRD Gadget Header
	*
	* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
	*
	* Authors: Felipe Balbi <balbi@ti.com>,
	* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions, and the following disclaimer,
	* without modification.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. The names of the above-listed copyright holders may not be used
	* to endorse or promote products derived from this software without
	* specific prior written permission.
	*
	* ALTERNATIVELY, this software may be distributed under the terms of the
	* GNU General Public License ("GPL") version 2, as published by the Free
	* Software Foundation.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
	* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
	* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
	* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
	* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
	* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
	* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
	* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#ifndef __DRIVERS_USB_DWC3_GADGET_H
	#define __DRIVERS_USB_DWC3_GADGET_H

	#include <linux/list.h>
	#include <linux/usb/gadget.h>
	#include "io.h"

	struct dwc3;
	#define to_dwc3_ep(ep) (container_of(ep, struct dwc3_ep, endpoint))
	#define gadget_to_dwc(g) (container_of(g, struct dwc3, gadget))

	/* DEPCFG parameter 1 */
	#define DWC3_DEPCFG_INT_NUM(n) ((n) << 0)
	#define DWC3_DEPCFG_XFER_COMPLETE_EN (1 << 8)
	#define DWC3_DEPCFG_XFER_IN_PROGRESS_EN (1 << 9)
	#define DWC3_DEPCFG_XFER_NOT_READY_EN (1 << 10)
	#define DWC3_DEPCFG_FIFO_ERROR_EN (1 << 11)
	#define DWC3_DEPCFG_STREAM_EVENT_EN (1 << 13)
	#define DWC3_DEPCFG_BINTERVAL_M1(n) ((n) << 16)
	#define DWC3_DEPCFG_STREAM_CAPABLE (1 << 24)
	#define DWC3_DEPCFG_EP_NUMBER(n) ((n) << 25)
	#define DWC3_DEPCFG_BULK_BASED (1 << 30)
	#define DWC3_DEPCFG_FIFO_BASED (1 << 31)

	/* DEPCFG parameter 0 */
	#define DWC3_DEPCFG_EP_TYPE(n) ((n) << 1)
	#define DWC3_DEPCFG_MAX_PACKET_SIZE(n) ((n) << 3)
	#define DWC3_DEPCFG_FIFO_NUMBER(n) ((n) << 17)
	#define DWC3_DEPCFG_BURST_SIZE(n) ((n) << 22)
	#define DWC3_DEPCFG_DATA_SEQ_NUM(n) ((n) << 26)
	#define DWC3_DEPCFG_IGN_SEQ_NUM (1 << 31)

	/* DEPXFERCFG parameter 0 */
	#define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff)

	struct dwc3_gadget_ep_cmd_params {
	u32 param2;
	u32 param1;
	u32 param0;
	};

	/* -------------------------------------------------------------------------- */

	struct dwc3_request {
	struct usb_request request;
	struct list_head list;
	struct dwc3_ep *dep;

	u8 epnum;
	struct dwc3_trb_hw *trb;
	dma_addr_t trb_dma;

	unsigned direction:1;
	unsigned mapped:1;
	unsigned queued:1;
	};
	#define to_dwc3_request(r) (container_of(r, struct dwc3_request, request))

	static inline struct dwc3_request next_request(struct list_head list)
	{
	if (list_empty(list))
	return NULL;

	return list_first_entry(list, struct dwc3_request, list);
	}

	static inline void dwc3_gadget_move_request_queued(struct dwc3_request *req)
	{
	struct dwc3_ep *dep = req->dep;

	req->queued = true;
	list_move_tail(&req->list, &dep->req_queued);
	}

	#if defined(CONFIG_USB_GADGET_DWC3) \|\| defined(CONFIG_USB_GADGET_DWC3_MODULE)
	int dwc3_gadget_init(struct dwc3 *dwc);
	void dwc3_gadget_exit(struct dwc3 *dwc);
	#else
	static inline int dwc3_gadget_init(struct dwc3 *dwc) { return 0; }
	static inline void dwc3_gadget_exit(struct dwc3 *dwc) { }
	static inline int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
	unsigned cmd, struct dwc3_gadget_ep_cmd_params *params)
	{
	return 0;
	}
	#endif

	void dwc3_gadget_giveback(struct dwc3_ep dep, struct dwc3_request req,
	int status);

	void dwc3_ep0_interrupt(struct dwc3 dwc, const struct dwc3_event_depevt event);
	void dwc3_ep0_out_start(struct dwc3 *dwc);
	int dwc3_gadget_ep0_queue(struct usb_ep ep, struct usb_request request,
	gfp_t gfp_flags);
	int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value);
	int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
	unsigned cmd, struct dwc3_gadget_ep_cmd_params *params);
	void dwc3_map_buffer_to_dma(struct dwc3_request *req);
	void dwc3_unmap_buffer_from_dma(struct dwc3_request *req);

	/**
	* dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW
	* @dwc: DesignWare USB3 Pointer
	* @number: DWC endpoint number
	*
	* Caller should take care of locking
	*/
	static inline u32 dwc3_gadget_ep_get_transfer_index(struct dwc3 *dwc, u8 number)
	{
	u32 res_id;

	res_id = dwc3_readl(dwc->regs, DWC3_DEPCMD(number));

	return DWC3_DEPCMD_GET_RSC_IDX(res_id);
	}

	/**
	* dwc3_gadget_event_string - returns event name
	* @event: the event code
	*/
	static inline const char *dwc3_gadget_event_string(u8 event)
	{
	switch (event) {
	case DWC3_DEVICE_EVENT_DISCONNECT:
	return "Disconnect";
	case DWC3_DEVICE_EVENT_RESET:
	return "Reset";
	case DWC3_DEVICE_EVENT_CONNECT_DONE:
	return "Connection Done";
	case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE:
	return "Link Status Change";
	case DWC3_DEVICE_EVENT_WAKEUP:
	return "WakeUp";
	case DWC3_DEVICE_EVENT_EOPF:
	return "End-Of-Frame";
	case DWC3_DEVICE_EVENT_SOF:
	return "Start-Of-Frame";
	case DWC3_DEVICE_EVENT_ERRATIC_ERROR:
	return "Erratic Error";
	case DWC3_DEVICE_EVENT_CMD_CMPL:
	return "Command Complete";
	case DWC3_DEVICE_EVENT_OVERFLOW:
	return "Overflow";
	}

	return "UNKNOWN";
	}

	/**
	* dwc3_ep_event_string - returns event name
	* @event: then event code
	*/
	static inline const char *dwc3_ep_event_string(u8 event)
	{
	switch (event) {
	case DWC3_DEPEVT_XFERCOMPLETE:
	return "Transfer Complete";
	case DWC3_DEPEVT_XFERINPROGRESS:
	return "Transfer In-Progress";
	case DWC3_DEPEVT_XFERNOTREADY:
	return "Transfer Not Ready";
	case DWC3_DEPEVT_RXTXFIFOEVT:
	return "FIFO";
	case DWC3_DEPEVT_STREAMEVT:
	return "Stream";
	case DWC3_DEPEVT_EPCMDCMPLT:
	return "Endpoint Command Complete";
	}

	return "UNKNOWN";
	}

	#endif /* __DRIVERS_USB_DWC3_GADGET_H */