2 * gadget.h - DesignWare USB3 DRD Gadget Header
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
6 * Authors: Felipe Balbi <balbi@ti.com>,
7 * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions, and the following disclaimer,
14 * without modification.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The names of the above-listed copyright holders may not be used
19 * to endorse or promote products derived from this software without
20 * specific prior written permission.
22 * ALTERNATIVELY, this software may be distributed under the terms of the
23 * GNU General Public License ("GPL") version 2, as published by the Free
24 * Software Foundation.
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
27 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
28 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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31 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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39 #ifndef __DRIVERS_USB_DWC3_GADGET_H
40 #define __DRIVERS_USB_DWC3_GADGET_H
42 #include <linux/list.h>
43 #include <linux/usb/gadget.h>
47 #define to_dwc3_ep(ep) (container_of(ep, struct dwc3_ep, endpoint))
48 #define gadget_to_dwc(g) (container_of(g, struct dwc3, gadget))
50 /* DEPCFG parameter 1 */
51 #define DWC3_DEPCFG_INT_NUM(n) ((n) << 0)
52 #define DWC3_DEPCFG_XFER_COMPLETE_EN (1 << 8)
53 #define DWC3_DEPCFG_XFER_IN_PROGRESS_EN (1 << 9)
54 #define DWC3_DEPCFG_XFER_NOT_READY_EN (1 << 10)
55 #define DWC3_DEPCFG_FIFO_ERROR_EN (1 << 11)
56 #define DWC3_DEPCFG_STREAM_EVENT_EN (1 << 13)
57 #define DWC3_DEPCFG_BINTERVAL_M1(n) ((n) << 16)
58 #define DWC3_DEPCFG_STREAM_CAPABLE (1 << 24)
59 #define DWC3_DEPCFG_EP_NUMBER(n) ((n) << 25)
60 #define DWC3_DEPCFG_BULK_BASED (1 << 30)
61 #define DWC3_DEPCFG_FIFO_BASED (1 << 31)
63 /* DEPCFG parameter 0 */
64 #define DWC3_DEPCFG_EP_TYPE(n) ((n) << 1)
65 #define DWC3_DEPCFG_MAX_PACKET_SIZE(n) ((n) << 3)
66 #define DWC3_DEPCFG_FIFO_NUMBER(n) ((n) << 17)
67 #define DWC3_DEPCFG_BURST_SIZE(n) ((n) << 22)
68 #define DWC3_DEPCFG_DATA_SEQ_NUM(n) ((n) << 26)
69 /* This applies for core versions earlier than 1.94a */
70 #define DWC3_DEPCFG_IGN_SEQ_NUM (1 << 31)
71 /* These apply for core versions 1.94a and later */
72 #define DWC3_DEPCFG_ACTION_INIT (0 << 30)
73 #define DWC3_DEPCFG_ACTION_RESTORE (1 << 30)
74 #define DWC3_DEPCFG_ACTION_MODIFY (2 << 30)
76 /* DEPXFERCFG parameter 0 */
77 #define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff)
79 struct dwc3_gadget_ep_cmd_params {
85 /* -------------------------------------------------------------------------- */
87 #define to_dwc3_request(r) (container_of(r, struct dwc3_request, request))
89 static inline struct dwc3_request *next_request(struct list_head *list)
94 return list_first_entry(list, struct dwc3_request, list);
97 static inline void dwc3_gadget_move_request_queued(struct dwc3_request *req)
99 struct dwc3_ep *dep = req->dep;
102 list_move_tail(&req->list, &dep->req_queued);
105 void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
108 int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode);
109 int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state);
111 void dwc3_ep0_interrupt(struct dwc3 *dwc,
112 const struct dwc3_event_depevt *event);
113 void dwc3_ep0_out_start(struct dwc3 *dwc);
114 int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
115 int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
117 int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value);
118 int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
119 unsigned cmd, struct dwc3_gadget_ep_cmd_params *params);
120 int dwc3_send_gadget_generic_command(struct dwc3 *dwc, int cmd, u32 param);
123 * dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW
124 * @dwc: DesignWare USB3 Pointer
125 * @number: DWC endpoint number
127 * Caller should take care of locking
129 static inline u32 dwc3_gadget_ep_get_transfer_index(struct dwc3 *dwc, u8 number)
133 res_id = dwc3_readl(dwc->regs, DWC3_DEPCMD(number));
135 return DWC3_DEPCMD_GET_RSC_IDX(res_id);
139 * dwc3_gadget_event_string - returns event name
140 * @event: the event code
142 static inline const char *dwc3_gadget_event_string(u8 event)
145 case DWC3_DEVICE_EVENT_DISCONNECT:
147 case DWC3_DEVICE_EVENT_RESET:
149 case DWC3_DEVICE_EVENT_CONNECT_DONE:
150 return "Connection Done";
151 case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE:
152 return "Link Status Change";
153 case DWC3_DEVICE_EVENT_WAKEUP:
155 case DWC3_DEVICE_EVENT_EOPF:
156 return "End-Of-Frame";
157 case DWC3_DEVICE_EVENT_SOF:
158 return "Start-Of-Frame";
159 case DWC3_DEVICE_EVENT_ERRATIC_ERROR:
160 return "Erratic Error";
161 case DWC3_DEVICE_EVENT_CMD_CMPL:
162 return "Command Complete";
163 case DWC3_DEVICE_EVENT_OVERFLOW:
171 * dwc3_ep_event_string - returns event name
172 * @event: then event code
174 static inline const char *dwc3_ep_event_string(u8 event)
177 case DWC3_DEPEVT_XFERCOMPLETE:
178 return "Transfer Complete";
179 case DWC3_DEPEVT_XFERINPROGRESS:
180 return "Transfer In-Progress";
181 case DWC3_DEPEVT_XFERNOTREADY:
182 return "Transfer Not Ready";
183 case DWC3_DEPEVT_RXTXFIFOEVT:
185 case DWC3_DEPEVT_STREAMEVT:
187 case DWC3_DEPEVT_EPCMDCMPLT:
188 return "Endpoint Command Complete";
194 #endif /* __DRIVERS_USB_DWC3_GADGET_H */