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1 | /** |
2 | * gadget.h - DesignWare USB3 DRD Gadget Header | |
3 | * | |
4 | * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com | |
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5 | * |
6 | * Authors: Felipe Balbi <balbi@ti.com>, | |
7 | * Sebastian Andrzej Siewior <bigeasy@linutronix.de> | |
8 | * | |
9 | * Redistribution and use in source and binary forms, with or without | |
10 | * modification, are permitted provided that the following conditions | |
11 | * are met: | |
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. | |
21 | * | |
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. | |
25 | * | |
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 | |
30 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
31 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
32 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
33 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
34 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
35 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
36 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
37 | */ | |
38 | ||
39 | #ifndef __DRIVERS_USB_DWC3_GADGET_H | |
40 | #define __DRIVERS_USB_DWC3_GADGET_H | |
41 | ||
42 | #include <linux/list.h> | |
43 | #include <linux/usb/gadget.h> | |
44 | #include "io.h" | |
45 | ||
46 | struct dwc3; | |
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)) | |
49 | ||
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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) | |
62 | ||
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 | #define DWC3_DEPCFG_IGN_SEQ_NUM (1 << 31) | |
70 | ||
71 | /* DEPXFERCFG parameter 0 */ | |
72 | #define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff) | |
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73 | |
74 | struct dwc3_gadget_ep_cmd_params { | |
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75 | u32 param2; |
76 | u32 param1; | |
77 | u32 param0; | |
78 | }; | |
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79 | |
80 | /* -------------------------------------------------------------------------- */ | |
81 | ||
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82 | #define to_dwc3_request(r) (container_of(r, struct dwc3_request, request)) |
83 | ||
84 | static inline struct dwc3_request *next_request(struct list_head *list) | |
85 | { | |
86 | if (list_empty(list)) | |
87 | return NULL; | |
88 | ||
89 | return list_first_entry(list, struct dwc3_request, list); | |
90 | } | |
91 | ||
92 | static inline void dwc3_gadget_move_request_queued(struct dwc3_request *req) | |
93 | { | |
94 | struct dwc3_ep *dep = req->dep; | |
95 | ||
96 | req->queued = true; | |
97 | list_move_tail(&req->list, &dep->req_queued); | |
98 | } | |
99 | ||
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100 | void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, |
101 | int status); | |
102 | ||
04a9bfcd | 103 | int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode); |
8598bde7 | 104 | int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state); |
04a9bfcd | 105 | |
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106 | void dwc3_ep0_interrupt(struct dwc3 *dwc, |
107 | const struct dwc3_event_depevt *event); | |
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108 | void dwc3_ep0_out_start(struct dwc3 *dwc); |
109 | int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request, | |
110 | gfp_t gfp_flags); | |
111 | int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value); | |
112 | int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep, | |
113 | unsigned cmd, struct dwc3_gadget_ep_cmd_params *params); | |
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114 | |
115 | /** | |
116 | * dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW | |
117 | * @dwc: DesignWare USB3 Pointer | |
118 | * @number: DWC endpoint number | |
119 | * | |
120 | * Caller should take care of locking | |
121 | */ | |
122 | static inline u32 dwc3_gadget_ep_get_transfer_index(struct dwc3 *dwc, u8 number) | |
123 | { | |
124 | u32 res_id; | |
125 | ||
126 | res_id = dwc3_readl(dwc->regs, DWC3_DEPCMD(number)); | |
127 | ||
128 | return DWC3_DEPCMD_GET_RSC_IDX(res_id); | |
129 | } | |
130 | ||
131 | /** | |
132 | * dwc3_gadget_event_string - returns event name | |
133 | * @event: the event code | |
134 | */ | |
135 | static inline const char *dwc3_gadget_event_string(u8 event) | |
136 | { | |
137 | switch (event) { | |
138 | case DWC3_DEVICE_EVENT_DISCONNECT: | |
139 | return "Disconnect"; | |
140 | case DWC3_DEVICE_EVENT_RESET: | |
141 | return "Reset"; | |
142 | case DWC3_DEVICE_EVENT_CONNECT_DONE: | |
143 | return "Connection Done"; | |
144 | case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE: | |
145 | return "Link Status Change"; | |
146 | case DWC3_DEVICE_EVENT_WAKEUP: | |
147 | return "WakeUp"; | |
148 | case DWC3_DEVICE_EVENT_EOPF: | |
149 | return "End-Of-Frame"; | |
150 | case DWC3_DEVICE_EVENT_SOF: | |
151 | return "Start-Of-Frame"; | |
152 | case DWC3_DEVICE_EVENT_ERRATIC_ERROR: | |
153 | return "Erratic Error"; | |
154 | case DWC3_DEVICE_EVENT_CMD_CMPL: | |
155 | return "Command Complete"; | |
156 | case DWC3_DEVICE_EVENT_OVERFLOW: | |
157 | return "Overflow"; | |
158 | } | |
159 | ||
160 | return "UNKNOWN"; | |
161 | } | |
162 | ||
163 | /** | |
164 | * dwc3_ep_event_string - returns event name | |
165 | * @event: then event code | |
166 | */ | |
167 | static inline const char *dwc3_ep_event_string(u8 event) | |
168 | { | |
169 | switch (event) { | |
170 | case DWC3_DEPEVT_XFERCOMPLETE: | |
171 | return "Transfer Complete"; | |
172 | case DWC3_DEPEVT_XFERINPROGRESS: | |
173 | return "Transfer In-Progress"; | |
174 | case DWC3_DEPEVT_XFERNOTREADY: | |
175 | return "Transfer Not Ready"; | |
176 | case DWC3_DEPEVT_RXTXFIFOEVT: | |
177 | return "FIFO"; | |
178 | case DWC3_DEPEVT_STREAMEVT: | |
179 | return "Stream"; | |
180 | case DWC3_DEPEVT_EPCMDCMPLT: | |
181 | return "Endpoint Command Complete"; | |
182 | } | |
183 | ||
184 | return "UNKNOWN"; | |
185 | } | |
186 | ||
187 | #endif /* __DRIVERS_USB_DWC3_GADGET_H */ |