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2f98382d KM |
1 | /* |
2 | * Renesas USB driver | |
3 | * | |
4 | * Copyright (C) 2011 Renesas Solutions Corp. | |
5 | * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, | |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | * GNU General Public License for more details. | |
11 | * | |
12 | * You should have received a copy of the GNU General Public License | |
13 | * along with this program; if not, write to the Free Software | |
14 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
15 | * | |
16 | */ | |
dfbb7f4f | 17 | #include <linux/delay.h> |
d128a259 | 18 | #include <linux/dma-mapping.h> |
2f98382d KM |
19 | #include <linux/io.h> |
20 | #include <linux/module.h> | |
21 | #include <linux/platform_device.h> | |
22 | #include <linux/usb/ch9.h> | |
23 | #include <linux/usb/gadget.h> | |
24 | #include "common.h" | |
25 | ||
26 | /* | |
27 | * struct | |
28 | */ | |
29 | struct usbhsg_request { | |
30 | struct usb_request req; | |
4bd04811 | 31 | struct usbhs_pkt pkt; |
2f98382d KM |
32 | }; |
33 | ||
34 | #define EP_NAME_SIZE 8 | |
35 | struct usbhsg_gpriv; | |
2f98382d KM |
36 | struct usbhsg_uep { |
37 | struct usb_ep ep; | |
38 | struct usbhs_pipe *pipe; | |
2f98382d KM |
39 | |
40 | char ep_name[EP_NAME_SIZE]; | |
41 | ||
42 | struct usbhsg_gpriv *gpriv; | |
2f98382d KM |
43 | }; |
44 | ||
45 | struct usbhsg_gpriv { | |
46 | struct usb_gadget gadget; | |
47 | struct usbhs_mod mod; | |
48 | ||
49 | struct usbhsg_uep *uep; | |
50 | int uep_size; | |
51 | ||
52 | struct usb_gadget_driver *driver; | |
53 | ||
54 | u32 status; | |
55 | #define USBHSG_STATUS_STARTED (1 << 0) | |
56 | #define USBHSG_STATUS_REGISTERD (1 << 1) | |
57 | #define USBHSG_STATUS_WEDGE (1 << 2) | |
58 | }; | |
59 | ||
2f98382d KM |
60 | struct usbhsg_recip_handle { |
61 | char *name; | |
62 | int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep, | |
63 | struct usb_ctrlrequest *ctrl); | |
64 | int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep, | |
65 | struct usb_ctrlrequest *ctrl); | |
66 | int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep, | |
67 | struct usb_ctrlrequest *ctrl); | |
68 | }; | |
69 | ||
70 | /* | |
71 | * macro | |
72 | */ | |
73 | #define usbhsg_priv_to_gpriv(priv) \ | |
74 | container_of( \ | |
75 | usbhs_mod_get(priv, USBHS_GADGET), \ | |
76 | struct usbhsg_gpriv, mod) | |
77 | ||
78 | #define __usbhsg_for_each_uep(start, pos, g, i) \ | |
e94c587e | 79 | for (i = start, pos = (g)->uep + i; \ |
2f98382d KM |
80 | i < (g)->uep_size; \ |
81 | i++, pos = (g)->uep + i) | |
82 | ||
83 | #define usbhsg_for_each_uep(pos, gpriv, i) \ | |
84 | __usbhsg_for_each_uep(1, pos, gpriv, i) | |
85 | ||
86 | #define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \ | |
87 | __usbhsg_for_each_uep(0, pos, gpriv, i) | |
88 | ||
89 | #define usbhsg_gadget_to_gpriv(g)\ | |
90 | container_of(g, struct usbhsg_gpriv, gadget) | |
91 | ||
92 | #define usbhsg_req_to_ureq(r)\ | |
93 | container_of(r, struct usbhsg_request, req) | |
94 | ||
95 | #define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep) | |
2f98382d KM |
96 | #define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv) |
97 | #define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv) | |
98 | #define usbhsg_gpriv_to_dcp(gp) ((gp)->uep) | |
99 | #define usbhsg_gpriv_to_nth_uep(gp, i) ((gp)->uep + i) | |
100 | #define usbhsg_uep_to_gpriv(u) ((u)->gpriv) | |
101 | #define usbhsg_uep_to_pipe(u) ((u)->pipe) | |
102 | #define usbhsg_pipe_to_uep(p) ((p)->mod_private) | |
103 | #define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv)) | |
104 | ||
4bd04811 KM |
105 | #define usbhsg_ureq_to_pkt(u) (&(u)->pkt) |
106 | #define usbhsg_pkt_to_ureq(i) \ | |
107 | container_of(i, struct usbhsg_request, pkt) | |
108 | ||
2f98382d KM |
109 | #define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN) |
110 | ||
111 | /* status */ | |
112 | #define usbhsg_status_init(gp) do {(gp)->status = 0; } while (0) | |
113 | #define usbhsg_status_set(gp, b) (gp->status |= b) | |
114 | #define usbhsg_status_clr(gp, b) (gp->status &= ~b) | |
115 | #define usbhsg_status_has(gp, b) (gp->status & b) | |
116 | ||
117 | /* | |
233f519d | 118 | * queue push/pop |
2f98382d | 119 | */ |
2f98382d KM |
120 | static void usbhsg_queue_pop(struct usbhsg_uep *uep, |
121 | struct usbhsg_request *ureq, | |
122 | int status) | |
123 | { | |
124 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
125 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
126 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
2f98382d KM |
127 | |
128 | dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe)); | |
129 | ||
2f98382d KM |
130 | ureq->req.status = status; |
131 | ureq->req.complete(&uep->ep, &ureq->req); | |
2f98382d KM |
132 | } |
133 | ||
2cc97197 | 134 | static void usbhsg_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt) |
2f98382d | 135 | { |
4bd04811 KM |
136 | struct usbhs_pipe *pipe = pkt->pipe; |
137 | struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe); | |
138 | struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); | |
2f98382d | 139 | |
659d4954 | 140 | ureq->req.actual = pkt->actual; |
2f98382d | 141 | |
659d4954 | 142 | usbhsg_queue_pop(uep, ureq, 0); |
4bd04811 KM |
143 | } |
144 | ||
b331872b KM |
145 | static void usbhsg_queue_push(struct usbhsg_uep *uep, |
146 | struct usbhsg_request *ureq) | |
147 | { | |
148 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
149 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
150 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
151 | struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq); | |
152 | struct usb_request *req = &ureq->req; | |
153 | ||
154 | req->actual = 0; | |
155 | req->status = -EINPROGRESS; | |
156 | usbhs_pkt_push(pipe, pkt, usbhsg_queue_done, | |
3edeee38 | 157 | req->buf, req->length, req->zero, -1); |
654c35ab | 158 | usbhs_pkt_start(pipe); |
b331872b KM |
159 | |
160 | dev_dbg(dev, "pipe %d : queue push (%d)\n", | |
161 | usbhs_pipe_number(pipe), | |
162 | req->length); | |
163 | } | |
164 | ||
233f519d KM |
165 | /* |
166 | * dma map/unmap | |
167 | */ | |
e73a9891 KM |
168 | static int usbhsg_dma_map(struct device *dev, |
169 | struct usbhs_pkt *pkt, | |
170 | enum dma_data_direction dir) | |
171 | { | |
172 | struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); | |
173 | struct usb_request *req = &ureq->req; | |
174 | ||
175 | if (pkt->dma != DMA_ADDR_INVALID) { | |
176 | dev_err(dev, "dma is already mapped\n"); | |
177 | return -EIO; | |
178 | } | |
179 | ||
180 | if (req->dma == DMA_ADDR_INVALID) { | |
181 | pkt->dma = dma_map_single(dev, pkt->buf, pkt->length, dir); | |
182 | } else { | |
183 | dma_sync_single_for_device(dev, req->dma, req->length, dir); | |
184 | pkt->dma = req->dma; | |
185 | } | |
186 | ||
187 | if (dma_mapping_error(dev, pkt->dma)) { | |
8418153a | 188 | dev_err(dev, "dma mapping error %llx\n", (u64)pkt->dma); |
e73a9891 KM |
189 | return -EIO; |
190 | } | |
191 | ||
192 | return 0; | |
193 | } | |
194 | ||
195 | static int usbhsg_dma_unmap(struct device *dev, | |
196 | struct usbhs_pkt *pkt, | |
197 | enum dma_data_direction dir) | |
198 | { | |
199 | struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); | |
200 | struct usb_request *req = &ureq->req; | |
201 | ||
202 | if (pkt->dma == DMA_ADDR_INVALID) { | |
203 | dev_err(dev, "dma is not mapped\n"); | |
204 | return -EIO; | |
205 | } | |
206 | ||
207 | if (req->dma == DMA_ADDR_INVALID) | |
208 | dma_unmap_single(dev, pkt->dma, pkt->length, dir); | |
209 | else | |
210 | dma_sync_single_for_cpu(dev, req->dma, req->length, dir); | |
211 | ||
212 | pkt->dma = DMA_ADDR_INVALID; | |
213 | ||
214 | return 0; | |
215 | } | |
216 | ||
217 | static int usbhsg_dma_map_ctrl(struct usbhs_pkt *pkt, int map) | |
218 | { | |
219 | struct usbhs_pipe *pipe = pkt->pipe; | |
220 | struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe); | |
221 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
222 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
223 | enum dma_data_direction dir; | |
224 | ||
225 | dir = usbhs_pipe_is_dir_in(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; | |
226 | ||
227 | if (map) | |
228 | return usbhsg_dma_map(dev, pkt, dir); | |
229 | else | |
230 | return usbhsg_dma_unmap(dev, pkt, dir); | |
231 | } | |
232 | ||
2f98382d KM |
233 | /* |
234 | * USB_TYPE_STANDARD / clear feature functions | |
235 | */ | |
236 | static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv, | |
237 | struct usbhsg_uep *uep, | |
238 | struct usb_ctrlrequest *ctrl) | |
239 | { | |
240 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
241 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); | |
242 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); | |
243 | ||
244 | usbhs_dcp_control_transfer_done(pipe); | |
245 | ||
246 | return 0; | |
247 | } | |
248 | ||
249 | static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv, | |
250 | struct usbhsg_uep *uep, | |
251 | struct usb_ctrlrequest *ctrl) | |
252 | { | |
253 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
254 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
255 | ||
256 | if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) { | |
e8d548d5 | 257 | usbhs_pipe_disable(pipe); |
6e6db82b | 258 | usbhs_pipe_sequence_data0(pipe); |
e8d548d5 | 259 | usbhs_pipe_enable(pipe); |
2f98382d KM |
260 | } |
261 | ||
262 | usbhsg_recip_handler_std_control_done(priv, uep, ctrl); | |
263 | ||
25fa7079 KM |
264 | usbhs_pkt_start(pipe); |
265 | ||
2f98382d KM |
266 | return 0; |
267 | } | |
268 | ||
269 | struct usbhsg_recip_handle req_clear_feature = { | |
270 | .name = "clear feature", | |
271 | .device = usbhsg_recip_handler_std_control_done, | |
272 | .interface = usbhsg_recip_handler_std_control_done, | |
273 | .endpoint = usbhsg_recip_handler_std_clear_endpoint, | |
274 | }; | |
275 | ||
ced6e09e KM |
276 | /* |
277 | * USB_TYPE_STANDARD / set feature functions | |
278 | */ | |
dfbb7f4f KM |
279 | static int usbhsg_recip_handler_std_set_device(struct usbhs_priv *priv, |
280 | struct usbhsg_uep *uep, | |
281 | struct usb_ctrlrequest *ctrl) | |
282 | { | |
283 | switch (le16_to_cpu(ctrl->wValue)) { | |
284 | case USB_DEVICE_TEST_MODE: | |
285 | usbhsg_recip_handler_std_control_done(priv, uep, ctrl); | |
286 | udelay(100); | |
287 | usbhs_sys_set_test_mode(priv, le16_to_cpu(ctrl->wIndex >> 8)); | |
288 | break; | |
289 | default: | |
290 | usbhsg_recip_handler_std_control_done(priv, uep, ctrl); | |
291 | break; | |
292 | } | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
ced6e09e KM |
297 | static int usbhsg_recip_handler_std_set_endpoint(struct usbhs_priv *priv, |
298 | struct usbhsg_uep *uep, | |
299 | struct usb_ctrlrequest *ctrl) | |
300 | { | |
301 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
302 | ||
303 | usbhs_pipe_stall(pipe); | |
304 | ||
305 | usbhsg_recip_handler_std_control_done(priv, uep, ctrl); | |
306 | ||
307 | return 0; | |
308 | } | |
309 | ||
310 | struct usbhsg_recip_handle req_set_feature = { | |
311 | .name = "set feature", | |
dfbb7f4f | 312 | .device = usbhsg_recip_handler_std_set_device, |
ced6e09e KM |
313 | .interface = usbhsg_recip_handler_std_control_done, |
314 | .endpoint = usbhsg_recip_handler_std_set_endpoint, | |
315 | }; | |
316 | ||
17f7f769 KM |
317 | /* |
318 | * USB_TYPE_STANDARD / get status functions | |
319 | */ | |
320 | static void __usbhsg_recip_send_complete(struct usb_ep *ep, | |
321 | struct usb_request *req) | |
322 | { | |
323 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); | |
324 | ||
325 | /* free allocated recip-buffer/usb_request */ | |
326 | kfree(ureq->pkt.buf); | |
327 | usb_ep_free_request(ep, req); | |
328 | } | |
329 | ||
330 | static void __usbhsg_recip_send_status(struct usbhsg_gpriv *gpriv, | |
331 | unsigned short status) | |
332 | { | |
333 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); | |
334 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); | |
335 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
336 | struct usb_request *req; | |
337 | unsigned short *buf; | |
338 | ||
339 | /* alloc new usb_request for recip */ | |
340 | req = usb_ep_alloc_request(&dcp->ep, GFP_ATOMIC); | |
341 | if (!req) { | |
342 | dev_err(dev, "recip request allocation fail\n"); | |
343 | return; | |
344 | } | |
345 | ||
346 | /* alloc recip data buffer */ | |
347 | buf = kmalloc(sizeof(*buf), GFP_ATOMIC); | |
348 | if (!buf) { | |
349 | usb_ep_free_request(&dcp->ep, req); | |
350 | dev_err(dev, "recip data allocation fail\n"); | |
351 | return; | |
352 | } | |
353 | ||
354 | /* recip data is status */ | |
355 | *buf = cpu_to_le16(status); | |
356 | ||
357 | /* allocated usb_request/buffer will be freed */ | |
358 | req->complete = __usbhsg_recip_send_complete; | |
359 | req->buf = buf; | |
360 | req->length = sizeof(*buf); | |
361 | req->zero = 0; | |
362 | ||
363 | /* push packet */ | |
364 | pipe->handler = &usbhs_fifo_pio_push_handler; | |
365 | usbhsg_queue_push(dcp, usbhsg_req_to_ureq(req)); | |
366 | } | |
367 | ||
368 | static int usbhsg_recip_handler_std_get_device(struct usbhs_priv *priv, | |
369 | struct usbhsg_uep *uep, | |
370 | struct usb_ctrlrequest *ctrl) | |
371 | { | |
372 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
373 | unsigned short status = 1 << USB_DEVICE_SELF_POWERED; | |
374 | ||
375 | __usbhsg_recip_send_status(gpriv, status); | |
376 | ||
377 | return 0; | |
378 | } | |
379 | ||
380 | static int usbhsg_recip_handler_std_get_interface(struct usbhs_priv *priv, | |
381 | struct usbhsg_uep *uep, | |
382 | struct usb_ctrlrequest *ctrl) | |
383 | { | |
384 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
385 | unsigned short status = 0; | |
386 | ||
387 | __usbhsg_recip_send_status(gpriv, status); | |
388 | ||
389 | return 0; | |
390 | } | |
391 | ||
392 | static int usbhsg_recip_handler_std_get_endpoint(struct usbhs_priv *priv, | |
393 | struct usbhsg_uep *uep, | |
394 | struct usb_ctrlrequest *ctrl) | |
395 | { | |
396 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
397 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
398 | unsigned short status = 0; | |
399 | ||
400 | if (usbhs_pipe_is_stall(pipe)) | |
401 | status = 1 << USB_ENDPOINT_HALT; | |
402 | ||
403 | __usbhsg_recip_send_status(gpriv, status); | |
404 | ||
405 | return 0; | |
406 | } | |
407 | ||
408 | struct usbhsg_recip_handle req_get_status = { | |
409 | .name = "get status", | |
410 | .device = usbhsg_recip_handler_std_get_device, | |
411 | .interface = usbhsg_recip_handler_std_get_interface, | |
412 | .endpoint = usbhsg_recip_handler_std_get_endpoint, | |
413 | }; | |
414 | ||
2f98382d KM |
415 | /* |
416 | * USB_TYPE handler | |
417 | */ | |
418 | static int usbhsg_recip_run_handle(struct usbhs_priv *priv, | |
419 | struct usbhsg_recip_handle *handler, | |
420 | struct usb_ctrlrequest *ctrl) | |
421 | { | |
422 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
423 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
424 | struct usbhsg_uep *uep; | |
0432eed0 | 425 | struct usbhs_pipe *pipe; |
2f98382d KM |
426 | int recip = ctrl->bRequestType & USB_RECIP_MASK; |
427 | int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; | |
428 | int ret; | |
429 | int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep, | |
430 | struct usb_ctrlrequest *ctrl); | |
431 | char *msg; | |
432 | ||
433 | uep = usbhsg_gpriv_to_nth_uep(gpriv, nth); | |
0432eed0 KM |
434 | pipe = usbhsg_uep_to_pipe(uep); |
435 | if (!pipe) { | |
9a28b7bd | 436 | dev_err(dev, "wrong recip request\n"); |
25fa7079 | 437 | return -EINVAL; |
9a28b7bd | 438 | } |
2f98382d KM |
439 | |
440 | switch (recip) { | |
441 | case USB_RECIP_DEVICE: | |
442 | msg = "DEVICE"; | |
443 | func = handler->device; | |
444 | break; | |
445 | case USB_RECIP_INTERFACE: | |
446 | msg = "INTERFACE"; | |
447 | func = handler->interface; | |
448 | break; | |
449 | case USB_RECIP_ENDPOINT: | |
450 | msg = "ENDPOINT"; | |
451 | func = handler->endpoint; | |
452 | break; | |
453 | default: | |
454 | dev_warn(dev, "unsupported RECIP(%d)\n", recip); | |
455 | func = NULL; | |
456 | ret = -EINVAL; | |
457 | } | |
458 | ||
459 | if (func) { | |
460 | dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg); | |
461 | ret = func(priv, uep, ctrl); | |
462 | } | |
463 | ||
464 | return ret; | |
465 | } | |
466 | ||
467 | /* | |
468 | * irq functions | |
469 | * | |
470 | * it will be called from usbhs_interrupt | |
471 | */ | |
472 | static int usbhsg_irq_dev_state(struct usbhs_priv *priv, | |
473 | struct usbhs_irq_state *irq_state) | |
474 | { | |
475 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
476 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
477 | ||
75587f52 | 478 | gpriv->gadget.speed = usbhs_bus_get_speed(priv); |
2f98382d KM |
479 | |
480 | dev_dbg(dev, "state = %x : speed : %d\n", | |
481 | usbhs_status_get_device_state(irq_state), | |
482 | gpriv->gadget.speed); | |
483 | ||
484 | return 0; | |
485 | } | |
486 | ||
487 | static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv, | |
488 | struct usbhs_irq_state *irq_state) | |
489 | { | |
490 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
491 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); | |
492 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); | |
493 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
494 | struct usb_ctrlrequest ctrl; | |
495 | struct usbhsg_recip_handle *recip_handler = NULL; | |
496 | int stage = usbhs_status_get_ctrl_stage(irq_state); | |
497 | int ret = 0; | |
498 | ||
499 | dev_dbg(dev, "stage = %d\n", stage); | |
500 | ||
501 | /* | |
502 | * see Manual | |
503 | * | |
504 | * "Operation" | |
505 | * - "Interrupt Function" | |
506 | * - "Control Transfer Stage Transition Interrupt" | |
507 | * - Fig. "Control Transfer Stage Transitions" | |
508 | */ | |
509 | ||
510 | switch (stage) { | |
511 | case READ_DATA_STAGE: | |
0c6ef985 | 512 | pipe->handler = &usbhs_fifo_pio_push_handler; |
2f98382d KM |
513 | break; |
514 | case WRITE_DATA_STAGE: | |
0c6ef985 | 515 | pipe->handler = &usbhs_fifo_pio_pop_handler; |
2f98382d KM |
516 | break; |
517 | case NODATA_STATUS_STAGE: | |
0c6ef985 | 518 | pipe->handler = &usbhs_ctrl_stage_end_handler; |
2f98382d KM |
519 | break; |
520 | default: | |
521 | return ret; | |
522 | } | |
523 | ||
524 | /* | |
525 | * get usb request | |
526 | */ | |
527 | usbhs_usbreq_get_val(priv, &ctrl); | |
528 | ||
529 | switch (ctrl.bRequestType & USB_TYPE_MASK) { | |
530 | case USB_TYPE_STANDARD: | |
531 | switch (ctrl.bRequest) { | |
532 | case USB_REQ_CLEAR_FEATURE: | |
533 | recip_handler = &req_clear_feature; | |
534 | break; | |
ced6e09e KM |
535 | case USB_REQ_SET_FEATURE: |
536 | recip_handler = &req_set_feature; | |
537 | break; | |
17f7f769 KM |
538 | case USB_REQ_GET_STATUS: |
539 | recip_handler = &req_get_status; | |
540 | break; | |
2f98382d KM |
541 | } |
542 | } | |
543 | ||
544 | /* | |
545 | * setup stage / run recip | |
546 | */ | |
547 | if (recip_handler) | |
548 | ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl); | |
549 | else | |
550 | ret = gpriv->driver->setup(&gpriv->gadget, &ctrl); | |
551 | ||
552 | if (ret < 0) | |
e8d548d5 | 553 | usbhs_pipe_stall(pipe); |
2f98382d KM |
554 | |
555 | return ret; | |
556 | } | |
557 | ||
2f98382d KM |
558 | /* |
559 | * | |
560 | * usb_dcp_ops | |
561 | * | |
562 | */ | |
2f98382d KM |
563 | static int usbhsg_pipe_disable(struct usbhsg_uep *uep) |
564 | { | |
565 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
8a2c225d | 566 | struct usbhs_pkt *pkt; |
2f98382d | 567 | |
2f98382d | 568 | while (1) { |
97664a20 | 569 | pkt = usbhs_pkt_pop(pipe, NULL); |
8a2c225d | 570 | if (!pkt) |
2f98382d | 571 | break; |
91b158f4 KM |
572 | |
573 | usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ECONNRESET); | |
2f98382d KM |
574 | } |
575 | ||
91b158f4 KM |
576 | usbhs_pipe_disable(pipe); |
577 | ||
2f98382d KM |
578 | return 0; |
579 | } | |
580 | ||
409ba9e7 KM |
581 | static void usbhsg_uep_init(struct usbhsg_gpriv *gpriv) |
582 | { | |
583 | int i; | |
584 | struct usbhsg_uep *uep; | |
585 | ||
586 | usbhsg_for_each_uep_with_dcp(uep, gpriv, i) | |
587 | uep->pipe = NULL; | |
588 | } | |
589 | ||
2f98382d KM |
590 | /* |
591 | * | |
592 | * usb_ep_ops | |
593 | * | |
594 | */ | |
595 | static int usbhsg_ep_enable(struct usb_ep *ep, | |
596 | const struct usb_endpoint_descriptor *desc) | |
597 | { | |
598 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); | |
599 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
600 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); | |
601 | struct usbhs_pipe *pipe; | |
2f98382d KM |
602 | int ret = -EIO; |
603 | ||
409ba9e7 KM |
604 | /* |
605 | * if it already have pipe, | |
606 | * nothing to do | |
607 | */ | |
08e6c611 KM |
608 | if (uep->pipe) { |
609 | usbhs_pipe_clear(uep->pipe); | |
6e6db82b | 610 | usbhs_pipe_sequence_data0(uep->pipe); |
409ba9e7 | 611 | return 0; |
08e6c611 | 612 | } |
409ba9e7 | 613 | |
f5aa889f KM |
614 | pipe = usbhs_pipe_malloc(priv, |
615 | usb_endpoint_type(desc), | |
616 | usb_endpoint_dir_in(desc)); | |
2f98382d KM |
617 | if (pipe) { |
618 | uep->pipe = pipe; | |
619 | pipe->mod_private = uep; | |
2f98382d | 620 | |
f5aa889f | 621 | /* set epnum / maxp */ |
bc6fbf59 | 622 | usbhs_pipe_config_update(pipe, 0, |
f5aa889f KM |
623 | usb_endpoint_num(desc), |
624 | usb_endpoint_maxp(desc)); | |
625 | ||
233f519d KM |
626 | /* |
627 | * usbhs_fifo_dma_push/pop_handler try to | |
628 | * use dmaengine if possible. | |
629 | * It will use pio handler if impossible. | |
630 | */ | |
2f98382d | 631 | if (usb_endpoint_dir_in(desc)) |
0c6ef985 | 632 | pipe->handler = &usbhs_fifo_dma_push_handler; |
2f98382d | 633 | else |
0c6ef985 | 634 | pipe->handler = &usbhs_fifo_dma_pop_handler; |
2f98382d KM |
635 | |
636 | ret = 0; | |
637 | } | |
cb96632c | 638 | |
2f98382d KM |
639 | return ret; |
640 | } | |
641 | ||
642 | static int usbhsg_ep_disable(struct usb_ep *ep) | |
643 | { | |
644 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); | |
2f98382d | 645 | |
97664a20 | 646 | return usbhsg_pipe_disable(uep); |
2f98382d KM |
647 | } |
648 | ||
649 | static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep, | |
650 | gfp_t gfp_flags) | |
651 | { | |
652 | struct usbhsg_request *ureq; | |
653 | ||
654 | ureq = kzalloc(sizeof *ureq, gfp_flags); | |
655 | if (!ureq) | |
656 | return NULL; | |
657 | ||
6acb95d4 KM |
658 | usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq)); |
659 | ||
e73a9891 KM |
660 | ureq->req.dma = DMA_ADDR_INVALID; |
661 | ||
2f98382d KM |
662 | return &ureq->req; |
663 | } | |
664 | ||
665 | static void usbhsg_ep_free_request(struct usb_ep *ep, | |
666 | struct usb_request *req) | |
667 | { | |
668 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); | |
669 | ||
6acb95d4 | 670 | WARN_ON(!list_empty(&ureq->pkt.node)); |
2f98382d KM |
671 | kfree(ureq); |
672 | } | |
673 | ||
674 | static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req, | |
675 | gfp_t gfp_flags) | |
676 | { | |
677 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); | |
678 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
679 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); | |
680 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
2f98382d KM |
681 | |
682 | /* param check */ | |
683 | if (usbhsg_is_not_connected(gpriv) || | |
684 | unlikely(!gpriv->driver) || | |
685 | unlikely(!pipe)) | |
97664a20 | 686 | return -ESHUTDOWN; |
2f98382d | 687 | |
97664a20 | 688 | usbhsg_queue_push(uep, ureq); |
2f98382d | 689 | |
97664a20 | 690 | return 0; |
2f98382d KM |
691 | } |
692 | ||
693 | static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req) | |
694 | { | |
695 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); | |
696 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); | |
97664a20 | 697 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
2f98382d | 698 | |
97664a20 | 699 | usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq)); |
2f98382d KM |
700 | usbhsg_queue_pop(uep, ureq, -ECONNRESET); |
701 | ||
2f98382d KM |
702 | return 0; |
703 | } | |
704 | ||
705 | static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge) | |
706 | { | |
707 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); | |
708 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
709 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
97664a20 | 710 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
2f98382d | 711 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
2f98382d | 712 | unsigned long flags; |
2f98382d | 713 | |
97664a20 | 714 | usbhsg_pipe_disable(uep); |
2f98382d | 715 | |
97664a20 KM |
716 | dev_dbg(dev, "set halt %d (pipe %d)\n", |
717 | halt, usbhs_pipe_number(pipe)); | |
2f98382d | 718 | |
97664a20 KM |
719 | /******************** spin lock ********************/ |
720 | usbhs_lock(priv, flags); | |
2f98382d | 721 | |
97664a20 KM |
722 | if (halt) |
723 | usbhs_pipe_stall(pipe); | |
724 | else | |
725 | usbhs_pipe_disable(pipe); | |
2f98382d | 726 | |
97664a20 KM |
727 | if (halt && wedge) |
728 | usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE); | |
729 | else | |
730 | usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE); | |
2f98382d | 731 | |
97664a20 | 732 | usbhs_unlock(priv, flags); |
2f98382d KM |
733 | /******************** spin unlock ******************/ |
734 | ||
97664a20 | 735 | return 0; |
2f98382d KM |
736 | } |
737 | ||
738 | static int usbhsg_ep_set_halt(struct usb_ep *ep, int value) | |
739 | { | |
740 | return __usbhsg_ep_set_halt_wedge(ep, value, 0); | |
741 | } | |
742 | ||
743 | static int usbhsg_ep_set_wedge(struct usb_ep *ep) | |
744 | { | |
745 | return __usbhsg_ep_set_halt_wedge(ep, 1, 1); | |
746 | } | |
747 | ||
748 | static struct usb_ep_ops usbhsg_ep_ops = { | |
749 | .enable = usbhsg_ep_enable, | |
750 | .disable = usbhsg_ep_disable, | |
751 | ||
752 | .alloc_request = usbhsg_ep_alloc_request, | |
753 | .free_request = usbhsg_ep_free_request, | |
754 | ||
755 | .queue = usbhsg_ep_queue, | |
756 | .dequeue = usbhsg_ep_dequeue, | |
757 | ||
758 | .set_halt = usbhsg_ep_set_halt, | |
759 | .set_wedge = usbhsg_ep_set_wedge, | |
760 | }; | |
761 | ||
762 | /* | |
763 | * usb module start/end | |
764 | */ | |
765 | static int usbhsg_try_start(struct usbhs_priv *priv, u32 status) | |
766 | { | |
767 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
768 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); | |
769 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
770 | struct device *dev = usbhs_priv_to_dev(priv); | |
2f98382d | 771 | unsigned long flags; |
97664a20 | 772 | int ret = 0; |
2f98382d KM |
773 | |
774 | /******************** spin lock ********************/ | |
97664a20 | 775 | usbhs_lock(priv, flags); |
2f98382d | 776 | |
2f98382d KM |
777 | usbhsg_status_set(gpriv, status); |
778 | if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) && | |
779 | usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))) | |
97664a20 KM |
780 | ret = -1; /* not ready */ |
781 | ||
782 | usbhs_unlock(priv, flags); | |
783 | /******************** spin unlock ********************/ | |
784 | ||
785 | if (ret < 0) | |
786 | return 0; /* not ready is not error */ | |
2f98382d | 787 | |
97664a20 KM |
788 | /* |
789 | * enable interrupt and systems if ready | |
790 | */ | |
2f98382d KM |
791 | dev_dbg(dev, "start gadget\n"); |
792 | ||
793 | /* | |
794 | * pipe initialize and enable DCP | |
795 | */ | |
4bd04811 | 796 | usbhs_pipe_init(priv, |
e73a9891 | 797 | usbhsg_dma_map_ctrl); |
dad67397 | 798 | usbhs_fifo_init(priv); |
409ba9e7 | 799 | usbhsg_uep_init(gpriv); |
97664a20 KM |
800 | |
801 | /* dcp init */ | |
802 | dcp->pipe = usbhs_dcp_malloc(priv); | |
803 | dcp->pipe->mod_private = dcp; | |
bc6fbf59 | 804 | usbhs_pipe_config_update(dcp->pipe, 0, 0, 64); |
2f98382d KM |
805 | |
806 | /* | |
807 | * system config enble | |
808 | * - HI speed | |
809 | * - function | |
810 | * - usb module | |
811 | */ | |
2f98382d | 812 | usbhs_sys_function_ctrl(priv, 1); |
2f98382d KM |
813 | |
814 | /* | |
815 | * enable irq callback | |
816 | */ | |
817 | mod->irq_dev_state = usbhsg_irq_dev_state; | |
818 | mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage; | |
2f98382d KM |
819 | usbhs_irq_callback_update(priv, mod); |
820 | ||
2f98382d KM |
821 | return 0; |
822 | } | |
823 | ||
824 | static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status) | |
825 | { | |
826 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
827 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
828 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); | |
829 | struct device *dev = usbhs_priv_to_dev(priv); | |
2f98382d | 830 | unsigned long flags; |
97664a20 | 831 | int ret = 0; |
2f98382d KM |
832 | |
833 | /******************** spin lock ********************/ | |
97664a20 | 834 | usbhs_lock(priv, flags); |
2f98382d | 835 | |
2f98382d KM |
836 | usbhsg_status_clr(gpriv, status); |
837 | if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) && | |
838 | !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)) | |
97664a20 KM |
839 | ret = -1; /* already done */ |
840 | ||
841 | usbhs_unlock(priv, flags); | |
842 | /******************** spin unlock ********************/ | |
843 | ||
844 | if (ret < 0) | |
845 | return 0; /* already done is not error */ | |
2f98382d | 846 | |
97664a20 KM |
847 | /* |
848 | * disable interrupt and systems if 1st try | |
849 | */ | |
dad67397 KM |
850 | usbhs_fifo_quit(priv); |
851 | ||
2f98382d KM |
852 | /* disable all irq */ |
853 | mod->irq_dev_state = NULL; | |
854 | mod->irq_ctrl_stage = NULL; | |
2f98382d KM |
855 | usbhs_irq_callback_update(priv, mod); |
856 | ||
2f98382d KM |
857 | gpriv->gadget.speed = USB_SPEED_UNKNOWN; |
858 | ||
859 | /* disable sys */ | |
dfbb7f4f | 860 | usbhs_sys_set_test_mode(priv, 0); |
2f98382d | 861 | usbhs_sys_function_ctrl(priv, 0); |
2f98382d | 862 | |
97664a20 | 863 | usbhsg_pipe_disable(dcp); |
2f98382d | 864 | |
2f98382d KM |
865 | dev_dbg(dev, "stop gadget\n"); |
866 | ||
2f98382d KM |
867 | return 0; |
868 | } | |
869 | ||
870 | /* | |
871 | * | |
872 | * linux usb function | |
873 | * | |
874 | */ | |
af1d7056 FB |
875 | static int usbhsg_gadget_start(struct usb_gadget *gadget, |
876 | struct usb_gadget_driver *driver) | |
2f98382d | 877 | { |
af1d7056 | 878 | struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); |
f8eff0a0 | 879 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
2f98382d | 880 | |
af1d7056 | 881 | if (!driver || |
2f98382d | 882 | !driver->setup || |
7177aed4 | 883 | driver->max_speed < USB_SPEED_FULL) |
2f98382d | 884 | return -EINVAL; |
3b872188 | 885 | |
2f98382d KM |
886 | /* first hook up the driver ... */ |
887 | gpriv->driver = driver; | |
888 | gpriv->gadget.dev.driver = &driver->driver; | |
889 | ||
2f98382d | 890 | return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD); |
2f98382d | 891 | } |
2f98382d | 892 | |
af1d7056 FB |
893 | static int usbhsg_gadget_stop(struct usb_gadget *gadget, |
894 | struct usb_gadget_driver *driver) | |
2f98382d | 895 | { |
af1d7056 | 896 | struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); |
f8eff0a0 | 897 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
2f98382d KM |
898 | |
899 | if (!driver || | |
3b872188 | 900 | !driver->unbind) |
2f98382d KM |
901 | return -EINVAL; |
902 | ||
2f98382d | 903 | usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD); |
0cdd7d4b | 904 | gpriv->gadget.dev.driver = NULL; |
2f98382d KM |
905 | gpriv->driver = NULL; |
906 | ||
2f98382d KM |
907 | return 0; |
908 | } | |
2f98382d KM |
909 | |
910 | /* | |
911 | * usb gadget ops | |
912 | */ | |
913 | static int usbhsg_get_frame(struct usb_gadget *gadget) | |
914 | { | |
915 | struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); | |
916 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); | |
917 | ||
918 | return usbhs_frame_get_num(priv); | |
919 | } | |
920 | ||
921 | static struct usb_gadget_ops usbhsg_gadget_ops = { | |
922 | .get_frame = usbhsg_get_frame, | |
af1d7056 FB |
923 | .udc_start = usbhsg_gadget_start, |
924 | .udc_stop = usbhsg_gadget_stop, | |
2f98382d KM |
925 | }; |
926 | ||
927 | static int usbhsg_start(struct usbhs_priv *priv) | |
928 | { | |
929 | return usbhsg_try_start(priv, USBHSG_STATUS_STARTED); | |
930 | } | |
931 | ||
932 | static int usbhsg_stop(struct usbhs_priv *priv) | |
933 | { | |
8885a897 KM |
934 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
935 | ||
936 | /* cable disconnect */ | |
937 | if (gpriv->driver && | |
938 | gpriv->driver->disconnect) | |
939 | gpriv->driver->disconnect(&gpriv->gadget); | |
940 | ||
2f98382d KM |
941 | return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED); |
942 | } | |
943 | ||
3b2a2e47 KM |
944 | static void usbhs_mod_gadget_release(struct device *pdev) |
945 | { | |
946 | /* do nothing */ | |
947 | } | |
948 | ||
b7a8d17d | 949 | int usbhs_mod_gadget_probe(struct usbhs_priv *priv) |
2f98382d KM |
950 | { |
951 | struct usbhsg_gpriv *gpriv; | |
952 | struct usbhsg_uep *uep; | |
953 | struct device *dev = usbhs_priv_to_dev(priv); | |
954 | int pipe_size = usbhs_get_dparam(priv, pipe_size); | |
955 | int i; | |
0f91349b | 956 | int ret; |
2f98382d KM |
957 | |
958 | gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL); | |
959 | if (!gpriv) { | |
960 | dev_err(dev, "Could not allocate gadget priv\n"); | |
961 | return -ENOMEM; | |
962 | } | |
963 | ||
964 | uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL); | |
965 | if (!uep) { | |
966 | dev_err(dev, "Could not allocate ep\n"); | |
0f91349b | 967 | ret = -ENOMEM; |
2f98382d KM |
968 | goto usbhs_mod_gadget_probe_err_gpriv; |
969 | } | |
970 | ||
971 | /* | |
972 | * CAUTION | |
973 | * | |
974 | * There is no guarantee that it is possible to access usb module here. | |
975 | * Don't accesses to it. | |
976 | * The accesse will be enable after "usbhsg_start" | |
977 | */ | |
978 | ||
979 | /* | |
980 | * register itself | |
981 | */ | |
982 | usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET); | |
983 | ||
984 | /* init gpriv */ | |
985 | gpriv->mod.name = "gadget"; | |
986 | gpriv->mod.start = usbhsg_start; | |
987 | gpriv->mod.stop = usbhsg_stop; | |
988 | gpriv->uep = uep; | |
989 | gpriv->uep_size = pipe_size; | |
990 | usbhsg_status_init(gpriv); | |
991 | ||
992 | /* | |
993 | * init gadget | |
994 | */ | |
2f98382d KM |
995 | dev_set_name(&gpriv->gadget.dev, "gadget"); |
996 | gpriv->gadget.dev.parent = dev; | |
3b2a2e47 | 997 | gpriv->gadget.dev.release = usbhs_mod_gadget_release; |
2f98382d KM |
998 | gpriv->gadget.name = "renesas_usbhs_udc"; |
999 | gpriv->gadget.ops = &usbhsg_gadget_ops; | |
d327ab5b | 1000 | gpriv->gadget.max_speed = USB_SPEED_HIGH; |
f8eff0a0 KM |
1001 | ret = device_register(&gpriv->gadget.dev); |
1002 | if (ret < 0) | |
1003 | goto err_add_udc; | |
2f98382d KM |
1004 | |
1005 | INIT_LIST_HEAD(&gpriv->gadget.ep_list); | |
1006 | ||
1007 | /* | |
1008 | * init usb_ep | |
1009 | */ | |
1010 | usbhsg_for_each_uep_with_dcp(uep, gpriv, i) { | |
1011 | uep->gpriv = gpriv; | |
1012 | snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i); | |
1013 | ||
1014 | uep->ep.name = uep->ep_name; | |
1015 | uep->ep.ops = &usbhsg_ep_ops; | |
1016 | INIT_LIST_HEAD(&uep->ep.ep_list); | |
2f98382d KM |
1017 | |
1018 | /* init DCP */ | |
1019 | if (usbhsg_is_dcp(uep)) { | |
1020 | gpriv->gadget.ep0 = &uep->ep; | |
1021 | uep->ep.maxpacket = 64; | |
1022 | } | |
1023 | /* init normal pipe */ | |
1024 | else { | |
1025 | uep->ep.maxpacket = 512; | |
1026 | list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list); | |
1027 | } | |
1028 | } | |
1029 | ||
0f91349b SAS |
1030 | ret = usb_add_gadget_udc(dev, &gpriv->gadget); |
1031 | if (ret) | |
f8eff0a0 | 1032 | goto err_register; |
0f91349b SAS |
1033 | |
1034 | ||
2f98382d KM |
1035 | dev_info(dev, "gadget probed\n"); |
1036 | ||
1037 | return 0; | |
f8eff0a0 KM |
1038 | |
1039 | err_register: | |
1040 | device_unregister(&gpriv->gadget.dev); | |
0f91349b SAS |
1041 | err_add_udc: |
1042 | kfree(gpriv->uep); | |
2f98382d KM |
1043 | |
1044 | usbhs_mod_gadget_probe_err_gpriv: | |
1045 | kfree(gpriv); | |
1046 | ||
0f91349b | 1047 | return ret; |
2f98382d KM |
1048 | } |
1049 | ||
b7a8d17d | 1050 | void usbhs_mod_gadget_remove(struct usbhs_priv *priv) |
2f98382d KM |
1051 | { |
1052 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
1053 | ||
0f91349b | 1054 | usb_del_gadget_udc(&gpriv->gadget); |
3b872188 | 1055 | |
f8eff0a0 KM |
1056 | device_unregister(&gpriv->gadget.dev); |
1057 | ||
3af51ac9 | 1058 | kfree(gpriv->uep); |
2f98382d KM |
1059 | kfree(gpriv); |
1060 | } |