diff options
Diffstat (limited to 'drivers/usb/dwc3/gadget.h')
-rw-r--r-- | drivers/usb/dwc3/gadget.h | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h new file mode 100644 index 00000000000..71145a449d9 --- /dev/null +++ b/drivers/usb/dwc3/gadget.h | |||
@@ -0,0 +1,211 @@ | |||
1 | /** | ||
2 | * gadget.h - DesignWare USB3 DRD Gadget Header | ||
3 | * | ||
4 | * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com | ||
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 | |||
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) | ||
73 | |||
74 | struct dwc3_gadget_ep_cmd_params { | ||
75 | u32 param2; | ||
76 | u32 param1; | ||
77 | u32 param0; | ||
78 | }; | ||
79 | |||
80 | /* -------------------------------------------------------------------------- */ | ||
81 | |||
82 | struct dwc3_request { | ||
83 | struct usb_request request; | ||
84 | struct list_head list; | ||
85 | struct dwc3_ep *dep; | ||
86 | |||
87 | u8 epnum; | ||
88 | struct dwc3_trb_hw *trb; | ||
89 | dma_addr_t trb_dma; | ||
90 | |||
91 | unsigned direction:1; | ||
92 | unsigned mapped:1; | ||
93 | unsigned queued:1; | ||
94 | }; | ||
95 | #define to_dwc3_request(r) (container_of(r, struct dwc3_request, request)) | ||
96 | |||
97 | static inline struct dwc3_request *next_request(struct list_head *list) | ||
98 | { | ||
99 | if (list_empty(list)) | ||
100 | return NULL; | ||
101 | |||
102 | return list_first_entry(list, struct dwc3_request, list); | ||
103 | } | ||
104 | |||
105 | static inline void dwc3_gadget_move_request_queued(struct dwc3_request *req) | ||
106 | { | ||
107 | struct dwc3_ep *dep = req->dep; | ||
108 | |||
109 | req->queued = true; | ||
110 | list_move_tail(&req->list, &dep->req_queued); | ||
111 | } | ||
112 | |||
113 | #if defined(CONFIG_USB_GADGET_DWC3) || defined(CONFIG_USB_GADGET_DWC3_MODULE) | ||
114 | int dwc3_gadget_init(struct dwc3 *dwc); | ||
115 | void dwc3_gadget_exit(struct dwc3 *dwc); | ||
116 | #else | ||
117 | static inline int dwc3_gadget_init(struct dwc3 *dwc) { return 0; } | ||
118 | static inline void dwc3_gadget_exit(struct dwc3 *dwc) { } | ||
119 | static inline int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep, | ||
120 | unsigned cmd, struct dwc3_gadget_ep_cmd_params *params) | ||
121 | { | ||
122 | return 0; | ||
123 | } | ||
124 | #endif | ||
125 | |||
126 | void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, | ||
127 | int status); | ||
128 | |||
129 | void dwc3_ep0_interrupt(struct dwc3 *dwc, const struct dwc3_event_depevt *event); | ||
130 | void dwc3_ep0_out_start(struct dwc3 *dwc); | ||
131 | int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request, | ||
132 | gfp_t gfp_flags); | ||
133 | int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value); | ||
134 | int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep, | ||
135 | unsigned cmd, struct dwc3_gadget_ep_cmd_params *params); | ||
136 | void dwc3_map_buffer_to_dma(struct dwc3_request *req); | ||
137 | void dwc3_unmap_buffer_from_dma(struct dwc3_request *req); | ||
138 | |||
139 | /** | ||
140 | * dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW | ||
141 | * @dwc: DesignWare USB3 Pointer | ||
142 | * @number: DWC endpoint number | ||
143 | * | ||
144 | * Caller should take care of locking | ||
145 | */ | ||
146 | static inline u32 dwc3_gadget_ep_get_transfer_index(struct dwc3 *dwc, u8 number) | ||
147 | { | ||
148 | u32 res_id; | ||
149 | |||
150 | res_id = dwc3_readl(dwc->regs, DWC3_DEPCMD(number)); | ||
151 | |||
152 | return DWC3_DEPCMD_GET_RSC_IDX(res_id); | ||
153 | } | ||
154 | |||
155 | /** | ||
156 | * dwc3_gadget_event_string - returns event name | ||
157 | * @event: the event code | ||
158 | */ | ||
159 | static inline const char *dwc3_gadget_event_string(u8 event) | ||
160 | { | ||
161 | switch (event) { | ||
162 | case DWC3_DEVICE_EVENT_DISCONNECT: | ||
163 | return "Disconnect"; | ||
164 | case DWC3_DEVICE_EVENT_RESET: | ||
165 | return "Reset"; | ||
166 | case DWC3_DEVICE_EVENT_CONNECT_DONE: | ||
167 | return "Connection Done"; | ||
168 | case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE: | ||
169 | return "Link Status Change"; | ||
170 | case DWC3_DEVICE_EVENT_WAKEUP: | ||
171 | return "WakeUp"; | ||
172 | case DWC3_DEVICE_EVENT_EOPF: | ||
173 | return "End-Of-Frame"; | ||
174 | case DWC3_DEVICE_EVENT_SOF: | ||
175 | return "Start-Of-Frame"; | ||
176 | case DWC3_DEVICE_EVENT_ERRATIC_ERROR: | ||
177 | return "Erratic Error"; | ||
178 | case DWC3_DEVICE_EVENT_CMD_CMPL: | ||
179 | return "Command Complete"; | ||
180 | case DWC3_DEVICE_EVENT_OVERFLOW: | ||
181 | return "Overflow"; | ||
182 | } | ||
183 | |||
184 | return "UNKNOWN"; | ||
185 | } | ||
186 | |||
187 | /** | ||
188 | * dwc3_ep_event_string - returns event name | ||
189 | * @event: then event code | ||
190 | */ | ||
191 | static inline const char *dwc3_ep_event_string(u8 event) | ||
192 | { | ||
193 | switch (event) { | ||
194 | case DWC3_DEPEVT_XFERCOMPLETE: | ||
195 | return "Transfer Complete"; | ||
196 | case DWC3_DEPEVT_XFERINPROGRESS: | ||
197 | return "Transfer In-Progress"; | ||
198 | case DWC3_DEPEVT_XFERNOTREADY: | ||
199 | return "Transfer Not Ready"; | ||
200 | case DWC3_DEPEVT_RXTXFIFOEVT: | ||
201 | return "FIFO"; | ||
202 | case DWC3_DEPEVT_STREAMEVT: | ||
203 | return "Stream"; | ||
204 | case DWC3_DEPEVT_EPCMDCMPLT: | ||
205 | return "Endpoint Command Complete"; | ||
206 | } | ||
207 | |||
208 | return "UNKNOWN"; | ||
209 | } | ||
210 | |||
211 | #endif /* __DRIVERS_USB_DWC3_GADGET_H */ | ||