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Kuninori Morimoto2f983822011-04-05 11:40:54 +09001/*
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 */
Kuninori Morimotodfbb7f42011-11-24 17:28:35 -080017#include <linux/delay.h>
Kuninori Morimotod128a2592011-08-03 21:41:26 -070018#include <linux/dma-mapping.h>
Kuninori Morimoto2f983822011-04-05 11:40:54 +090019#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 */
29struct usbhsg_request {
30 struct usb_request req;
Kuninori Morimoto4bd04812011-06-06 14:18:07 +090031 struct usbhs_pkt pkt;
Kuninori Morimoto2f983822011-04-05 11:40:54 +090032};
33
34#define EP_NAME_SIZE 8
35struct usbhsg_gpriv;
Kuninori Morimoto2f983822011-04-05 11:40:54 +090036struct usbhsg_uep {
37 struct usb_ep ep;
38 struct usbhs_pipe *pipe;
Kuninori Morimoto2f983822011-04-05 11:40:54 +090039
40 char ep_name[EP_NAME_SIZE];
41
42 struct usbhsg_gpriv *gpriv;
Kuninori Morimoto2f983822011-04-05 11:40:54 +090043};
44
45struct 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)
Shimoda, Yoshihirocac402d2012-03-16 13:10:15 +090058#define USBHSG_STATUS_SELF_POWERED (1 << 3)
Kuninori Morimoto2f983822011-04-05 11:40:54 +090059};
60
Kuninori Morimoto2f983822011-04-05 11:40:54 +090061struct usbhsg_recip_handle {
62 char *name;
63 int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
64 struct usb_ctrlrequest *ctrl);
65 int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
66 struct usb_ctrlrequest *ctrl);
67 int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
68 struct usb_ctrlrequest *ctrl);
69};
70
71/*
72 * macro
73 */
74#define usbhsg_priv_to_gpriv(priv) \
75 container_of( \
76 usbhs_mod_get(priv, USBHS_GADGET), \
77 struct usbhsg_gpriv, mod)
78
79#define __usbhsg_for_each_uep(start, pos, g, i) \
Kuninori Morimotoe94c5872011-07-12 22:01:29 -070080 for (i = start, pos = (g)->uep + i; \
Kuninori Morimoto2f983822011-04-05 11:40:54 +090081 i < (g)->uep_size; \
82 i++, pos = (g)->uep + i)
83
84#define usbhsg_for_each_uep(pos, gpriv, i) \
85 __usbhsg_for_each_uep(1, pos, gpriv, i)
86
87#define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \
88 __usbhsg_for_each_uep(0, pos, gpriv, i)
89
90#define usbhsg_gadget_to_gpriv(g)\
91 container_of(g, struct usbhsg_gpriv, gadget)
92
93#define usbhsg_req_to_ureq(r)\
94 container_of(r, struct usbhsg_request, req)
95
96#define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep)
Kuninori Morimoto2f983822011-04-05 11:40:54 +090097#define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv)
98#define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv)
99#define usbhsg_gpriv_to_dcp(gp) ((gp)->uep)
100#define usbhsg_gpriv_to_nth_uep(gp, i) ((gp)->uep + i)
101#define usbhsg_uep_to_gpriv(u) ((u)->gpriv)
102#define usbhsg_uep_to_pipe(u) ((u)->pipe)
103#define usbhsg_pipe_to_uep(p) ((p)->mod_private)
104#define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv))
105
Kuninori Morimoto4bd04812011-06-06 14:18:07 +0900106#define usbhsg_ureq_to_pkt(u) (&(u)->pkt)
107#define usbhsg_pkt_to_ureq(i) \
108 container_of(i, struct usbhsg_request, pkt)
109
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900110#define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN)
111
112/* status */
113#define usbhsg_status_init(gp) do {(gp)->status = 0; } while (0)
114#define usbhsg_status_set(gp, b) (gp->status |= b)
115#define usbhsg_status_clr(gp, b) (gp->status &= ~b)
116#define usbhsg_status_has(gp, b) (gp->status & b)
117
118/*
Kuninori Morimoto233f5192011-07-07 00:23:24 -0700119 * queue push/pop
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900120 */
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900121static void usbhsg_queue_pop(struct usbhsg_uep *uep,
122 struct usbhsg_request *ureq,
123 int status)
124{
125 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
126 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
127 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900128
129 dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe));
130
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900131 ureq->req.status = status;
132 ureq->req.complete(&uep->ep, &ureq->req);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900133}
134
Kuninori Morimoto2cc97192011-10-10 22:03:39 -0700135static void usbhsg_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900136{
Kuninori Morimoto4bd04812011-06-06 14:18:07 +0900137 struct usbhs_pipe *pipe = pkt->pipe;
138 struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
139 struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
Kuninori Morimoto4bd04812011-06-06 14:18:07 +0900140
Kuninori Morimoto659d4952011-06-06 14:18:23 +0900141 ureq->req.actual = pkt->actual;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900142
Kuninori Morimoto659d4952011-06-06 14:18:23 +0900143 usbhsg_queue_pop(uep, ureq, 0);
Kuninori Morimoto4bd04812011-06-06 14:18:07 +0900144}
145
Kuninori Morimotob3318722011-10-10 22:04:41 -0700146static void usbhsg_queue_push(struct usbhsg_uep *uep,
147 struct usbhsg_request *ureq)
148{
149 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
150 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
151 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
152 struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
153 struct usb_request *req = &ureq->req;
154
155 req->actual = 0;
156 req->status = -EINPROGRESS;
157 usbhs_pkt_push(pipe, pkt, usbhsg_queue_done,
Kuninori Morimoto3edeee32011-12-08 18:28:54 -0800158 req->buf, req->length, req->zero, -1);
Kuninori Morimoto654c35a2011-10-10 22:04:53 -0700159 usbhs_pkt_start(pipe);
Kuninori Morimotob3318722011-10-10 22:04:41 -0700160
161 dev_dbg(dev, "pipe %d : queue push (%d)\n",
162 usbhs_pipe_number(pipe),
163 req->length);
164}
165
Kuninori Morimoto233f5192011-07-07 00:23:24 -0700166/*
167 * dma map/unmap
168 */
Kuninori Morimotoe73a9892011-06-06 14:19:03 +0900169static int usbhsg_dma_map_ctrl(struct usbhs_pkt *pkt, int map)
170{
Felipe Balbiade78f92011-12-19 11:57:16 +0200171 struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
172 struct usb_request *req = &ureq->req;
Kuninori Morimotoe73a9892011-06-06 14:19:03 +0900173 struct usbhs_pipe *pipe = pkt->pipe;
174 struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
175 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
Kuninori Morimotoe73a9892011-06-06 14:19:03 +0900176 enum dma_data_direction dir;
Felipe Balbiade78f92011-12-19 11:57:16 +0200177 int ret = 0;
Kuninori Morimotoe73a9892011-06-06 14:19:03 +0900178
Felipe Balbiade78f92011-12-19 11:57:16 +0200179 dir = usbhs_pipe_is_dir_host(pipe);
Kuninori Morimotoe73a9892011-06-06 14:19:03 +0900180
Felipe Balbiade78f92011-12-19 11:57:16 +0200181 if (map) {
182 /* it can not use scatter/gather */
183 WARN_ON(req->num_sgs);
184
185 ret = usb_gadget_map_request(&gpriv->gadget, req, dir);
186 if (ret < 0)
187 return ret;
188
189 pkt->dma = req->dma;
190 } else {
191 usb_gadget_unmap_request(&gpriv->gadget, req, dir);
192 }
193
194 return ret;
Kuninori Morimotoe73a9892011-06-06 14:19:03 +0900195}
196
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900197/*
198 * USB_TYPE_STANDARD / clear feature functions
199 */
200static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv,
201 struct usbhsg_uep *uep,
202 struct usb_ctrlrequest *ctrl)
203{
204 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
205 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
206 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
207
208 usbhs_dcp_control_transfer_done(pipe);
209
210 return 0;
211}
212
213static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv,
214 struct usbhsg_uep *uep,
215 struct usb_ctrlrequest *ctrl)
216{
217 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
218 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
219
220 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) {
Kuninori Morimotoe8d548d2011-06-06 14:18:03 +0900221 usbhs_pipe_disable(pipe);
Kuninori Morimoto6e6db822011-10-10 22:05:30 -0700222 usbhs_pipe_sequence_data0(pipe);
Kuninori Morimotoe8d548d2011-06-06 14:18:03 +0900223 usbhs_pipe_enable(pipe);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900224 }
225
226 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
227
Kuninori Morimoto25fa7072011-11-24 17:28:17 -0800228 usbhs_pkt_start(pipe);
229
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900230 return 0;
231}
232
233struct usbhsg_recip_handle req_clear_feature = {
234 .name = "clear feature",
235 .device = usbhsg_recip_handler_std_control_done,
236 .interface = usbhsg_recip_handler_std_control_done,
237 .endpoint = usbhsg_recip_handler_std_clear_endpoint,
238};
239
240/*
Kuninori Morimotoced6e092011-11-24 17:27:50 -0800241 * USB_TYPE_STANDARD / set feature functions
242 */
Kuninori Morimotodfbb7f42011-11-24 17:28:35 -0800243static int usbhsg_recip_handler_std_set_device(struct usbhs_priv *priv,
244 struct usbhsg_uep *uep,
245 struct usb_ctrlrequest *ctrl)
246{
247 switch (le16_to_cpu(ctrl->wValue)) {
248 case USB_DEVICE_TEST_MODE:
249 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
250 udelay(100);
251 usbhs_sys_set_test_mode(priv, le16_to_cpu(ctrl->wIndex >> 8));
252 break;
253 default:
254 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
255 break;
256 }
257
258 return 0;
259}
260
Kuninori Morimotoced6e092011-11-24 17:27:50 -0800261static int usbhsg_recip_handler_std_set_endpoint(struct usbhs_priv *priv,
262 struct usbhsg_uep *uep,
263 struct usb_ctrlrequest *ctrl)
264{
265 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
266
267 usbhs_pipe_stall(pipe);
268
269 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
270
271 return 0;
272}
273
274struct usbhsg_recip_handle req_set_feature = {
275 .name = "set feature",
Kuninori Morimotodfbb7f42011-11-24 17:28:35 -0800276 .device = usbhsg_recip_handler_std_set_device,
Kuninori Morimotoced6e092011-11-24 17:27:50 -0800277 .interface = usbhsg_recip_handler_std_control_done,
278 .endpoint = usbhsg_recip_handler_std_set_endpoint,
279};
280
281/*
Kuninori Morimoto17f7f762011-11-24 17:28:04 -0800282 * USB_TYPE_STANDARD / get status functions
283 */
284static void __usbhsg_recip_send_complete(struct usb_ep *ep,
285 struct usb_request *req)
286{
287 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
288
289 /* free allocated recip-buffer/usb_request */
290 kfree(ureq->pkt.buf);
291 usb_ep_free_request(ep, req);
292}
293
294static void __usbhsg_recip_send_status(struct usbhsg_gpriv *gpriv,
295 unsigned short status)
296{
297 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
298 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
299 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
300 struct usb_request *req;
301 unsigned short *buf;
302
303 /* alloc new usb_request for recip */
304 req = usb_ep_alloc_request(&dcp->ep, GFP_ATOMIC);
305 if (!req) {
306 dev_err(dev, "recip request allocation fail\n");
307 return;
308 }
309
310 /* alloc recip data buffer */
311 buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
312 if (!buf) {
313 usb_ep_free_request(&dcp->ep, req);
314 dev_err(dev, "recip data allocation fail\n");
315 return;
316 }
317
318 /* recip data is status */
319 *buf = cpu_to_le16(status);
320
321 /* allocated usb_request/buffer will be freed */
322 req->complete = __usbhsg_recip_send_complete;
323 req->buf = buf;
324 req->length = sizeof(*buf);
325 req->zero = 0;
326
327 /* push packet */
328 pipe->handler = &usbhs_fifo_pio_push_handler;
329 usbhsg_queue_push(dcp, usbhsg_req_to_ureq(req));
330}
331
332static int usbhsg_recip_handler_std_get_device(struct usbhs_priv *priv,
333 struct usbhsg_uep *uep,
334 struct usb_ctrlrequest *ctrl)
335{
336 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
Shimoda, Yoshihirocac402d2012-03-16 13:10:15 +0900337 unsigned short status = 0;
338
339 if (usbhsg_status_has(gpriv, USBHSG_STATUS_SELF_POWERED))
340 status = 1 << USB_DEVICE_SELF_POWERED;
Kuninori Morimoto17f7f762011-11-24 17:28:04 -0800341
342 __usbhsg_recip_send_status(gpriv, status);
343
344 return 0;
345}
346
347static int usbhsg_recip_handler_std_get_interface(struct usbhs_priv *priv,
348 struct usbhsg_uep *uep,
349 struct usb_ctrlrequest *ctrl)
350{
351 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
352 unsigned short status = 0;
353
354 __usbhsg_recip_send_status(gpriv, status);
355
356 return 0;
357}
358
359static int usbhsg_recip_handler_std_get_endpoint(struct usbhs_priv *priv,
360 struct usbhsg_uep *uep,
361 struct usb_ctrlrequest *ctrl)
362{
363 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
364 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
365 unsigned short status = 0;
366
367 if (usbhs_pipe_is_stall(pipe))
368 status = 1 << USB_ENDPOINT_HALT;
369
370 __usbhsg_recip_send_status(gpriv, status);
371
372 return 0;
373}
374
375struct usbhsg_recip_handle req_get_status = {
376 .name = "get status",
377 .device = usbhsg_recip_handler_std_get_device,
378 .interface = usbhsg_recip_handler_std_get_interface,
379 .endpoint = usbhsg_recip_handler_std_get_endpoint,
380};
381
382/*
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900383 * USB_TYPE handler
384 */
385static int usbhsg_recip_run_handle(struct usbhs_priv *priv,
386 struct usbhsg_recip_handle *handler,
387 struct usb_ctrlrequest *ctrl)
388{
389 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
390 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
391 struct usbhsg_uep *uep;
Kuninori Morimoto0432eed2011-06-06 14:18:54 +0900392 struct usbhs_pipe *pipe;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900393 int recip = ctrl->bRequestType & USB_RECIP_MASK;
394 int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
Jesper Juhl7983bc72012-01-16 22:42:10 +0100395 int ret = 0;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900396 int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
397 struct usb_ctrlrequest *ctrl);
398 char *msg;
399
400 uep = usbhsg_gpriv_to_nth_uep(gpriv, nth);
Kuninori Morimoto0432eed2011-06-06 14:18:54 +0900401 pipe = usbhsg_uep_to_pipe(uep);
402 if (!pipe) {
Kuninori Morimoto9a28b7b2011-04-21 14:10:12 +0900403 dev_err(dev, "wrong recip request\n");
Kuninori Morimoto25fa7072011-11-24 17:28:17 -0800404 return -EINVAL;
Kuninori Morimoto9a28b7b2011-04-21 14:10:12 +0900405 }
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900406
407 switch (recip) {
408 case USB_RECIP_DEVICE:
409 msg = "DEVICE";
410 func = handler->device;
411 break;
412 case USB_RECIP_INTERFACE:
413 msg = "INTERFACE";
414 func = handler->interface;
415 break;
416 case USB_RECIP_ENDPOINT:
417 msg = "ENDPOINT";
418 func = handler->endpoint;
419 break;
420 default:
421 dev_warn(dev, "unsupported RECIP(%d)\n", recip);
422 func = NULL;
423 ret = -EINVAL;
424 }
425
426 if (func) {
427 dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg);
428 ret = func(priv, uep, ctrl);
429 }
430
431 return ret;
432}
433
434/*
435 * irq functions
436 *
437 * it will be called from usbhs_interrupt
438 */
439static int usbhsg_irq_dev_state(struct usbhs_priv *priv,
440 struct usbhs_irq_state *irq_state)
441{
442 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
443 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
444
Kuninori Morimoto75587f52011-10-10 22:01:51 -0700445 gpriv->gadget.speed = usbhs_bus_get_speed(priv);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900446
447 dev_dbg(dev, "state = %x : speed : %d\n",
448 usbhs_status_get_device_state(irq_state),
449 gpriv->gadget.speed);
450
451 return 0;
452}
453
454static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
455 struct usbhs_irq_state *irq_state)
456{
457 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
458 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
459 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
460 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
461 struct usb_ctrlrequest ctrl;
462 struct usbhsg_recip_handle *recip_handler = NULL;
463 int stage = usbhs_status_get_ctrl_stage(irq_state);
464 int ret = 0;
465
466 dev_dbg(dev, "stage = %d\n", stage);
467
468 /*
469 * see Manual
470 *
471 * "Operation"
472 * - "Interrupt Function"
473 * - "Control Transfer Stage Transition Interrupt"
474 * - Fig. "Control Transfer Stage Transitions"
475 */
476
477 switch (stage) {
478 case READ_DATA_STAGE:
Kuninori Morimoto0c6ef982011-10-10 22:00:59 -0700479 pipe->handler = &usbhs_fifo_pio_push_handler;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900480 break;
481 case WRITE_DATA_STAGE:
Kuninori Morimoto0c6ef982011-10-10 22:00:59 -0700482 pipe->handler = &usbhs_fifo_pio_pop_handler;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900483 break;
484 case NODATA_STATUS_STAGE:
Kuninori Morimoto0c6ef982011-10-10 22:00:59 -0700485 pipe->handler = &usbhs_ctrl_stage_end_handler;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900486 break;
487 default:
488 return ret;
489 }
490
491 /*
492 * get usb request
493 */
494 usbhs_usbreq_get_val(priv, &ctrl);
495
496 switch (ctrl.bRequestType & USB_TYPE_MASK) {
497 case USB_TYPE_STANDARD:
498 switch (ctrl.bRequest) {
499 case USB_REQ_CLEAR_FEATURE:
500 recip_handler = &req_clear_feature;
501 break;
Kuninori Morimotoced6e092011-11-24 17:27:50 -0800502 case USB_REQ_SET_FEATURE:
503 recip_handler = &req_set_feature;
504 break;
Kuninori Morimoto17f7f762011-11-24 17:28:04 -0800505 case USB_REQ_GET_STATUS:
506 recip_handler = &req_get_status;
507 break;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900508 }
509 }
510
511 /*
512 * setup stage / run recip
513 */
514 if (recip_handler)
515 ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl);
516 else
517 ret = gpriv->driver->setup(&gpriv->gadget, &ctrl);
518
519 if (ret < 0)
Kuninori Morimotoe8d548d2011-06-06 14:18:03 +0900520 usbhs_pipe_stall(pipe);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900521
522 return ret;
523}
524
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900525/*
526 *
527 * usb_dcp_ops
528 *
529 */
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900530static int usbhsg_pipe_disable(struct usbhsg_uep *uep)
531{
532 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
Kuninori Morimoto8a2c2252011-06-06 14:18:33 +0900533 struct usbhs_pkt *pkt;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900534
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900535 while (1) {
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900536 pkt = usbhs_pkt_pop(pipe, NULL);
Kuninori Morimoto8a2c2252011-06-06 14:18:33 +0900537 if (!pkt)
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900538 break;
Kuninori Morimoto91b158f2011-11-24 17:28:26 -0800539
540 usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ECONNRESET);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900541 }
542
Kuninori Morimoto91b158f2011-11-24 17:28:26 -0800543 usbhs_pipe_disable(pipe);
544
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900545 return 0;
546}
547
548/*
549 *
550 * usb_ep_ops
551 *
552 */
553static int usbhsg_ep_enable(struct usb_ep *ep,
554 const struct usb_endpoint_descriptor *desc)
555{
556 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
557 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
558 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
559 struct usbhs_pipe *pipe;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900560 int ret = -EIO;
561
Kuninori Morimoto409ba9e2011-04-26 09:21:35 +0900562 /*
563 * if it already have pipe,
564 * nothing to do
565 */
Kuninori Morimoto08e6c612011-06-09 16:48:25 +0900566 if (uep->pipe) {
567 usbhs_pipe_clear(uep->pipe);
Kuninori Morimoto6e6db822011-10-10 22:05:30 -0700568 usbhs_pipe_sequence_data0(uep->pipe);
Kuninori Morimoto409ba9e2011-04-26 09:21:35 +0900569 return 0;
Kuninori Morimoto08e6c612011-06-09 16:48:25 +0900570 }
Kuninori Morimoto409ba9e2011-04-26 09:21:35 +0900571
Kuninori Morimotof5aa8892011-10-10 21:59:46 -0700572 pipe = usbhs_pipe_malloc(priv,
573 usb_endpoint_type(desc),
574 usb_endpoint_dir_in(desc));
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900575 if (pipe) {
576 uep->pipe = pipe;
577 pipe->mod_private = uep;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900578
Kuninori Morimotof5aa8892011-10-10 21:59:46 -0700579 /* set epnum / maxp */
Kuninori Morimotobc6fbf52011-10-10 22:04:00 -0700580 usbhs_pipe_config_update(pipe, 0,
Kuninori Morimotof5aa8892011-10-10 21:59:46 -0700581 usb_endpoint_num(desc),
582 usb_endpoint_maxp(desc));
583
Kuninori Morimoto233f5192011-07-07 00:23:24 -0700584 /*
585 * usbhs_fifo_dma_push/pop_handler try to
586 * use dmaengine if possible.
587 * It will use pio handler if impossible.
588 */
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900589 if (usb_endpoint_dir_in(desc))
Kuninori Morimoto0c6ef982011-10-10 22:00:59 -0700590 pipe->handler = &usbhs_fifo_dma_push_handler;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900591 else
Kuninori Morimoto0c6ef982011-10-10 22:00:59 -0700592 pipe->handler = &usbhs_fifo_dma_pop_handler;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900593
594 ret = 0;
595 }
Kuninori Morimotocb966322011-04-21 14:10:08 +0900596
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900597 return ret;
598}
599
600static int usbhsg_ep_disable(struct usb_ep *ep)
601{
602 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900603
Kuninori Morimotod9fa2982012-12-10 22:44:07 -0800604 usbhsg_pipe_disable(uep);
605
606 uep->pipe->mod_private = NULL;
607 uep->pipe = NULL;
608
609 return 0;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900610}
611
612static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
613 gfp_t gfp_flags)
614{
615 struct usbhsg_request *ureq;
616
617 ureq = kzalloc(sizeof *ureq, gfp_flags);
618 if (!ureq)
619 return NULL;
620
Kuninori Morimoto6acb95d2011-06-06 14:18:16 +0900621 usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq));
622
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900623 return &ureq->req;
624}
625
626static void usbhsg_ep_free_request(struct usb_ep *ep,
627 struct usb_request *req)
628{
629 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
630
Kuninori Morimoto6acb95d2011-06-06 14:18:16 +0900631 WARN_ON(!list_empty(&ureq->pkt.node));
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900632 kfree(ureq);
633}
634
635static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req,
636 gfp_t gfp_flags)
637{
638 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
639 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
640 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
641 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900642
643 /* param check */
644 if (usbhsg_is_not_connected(gpriv) ||
645 unlikely(!gpriv->driver) ||
646 unlikely(!pipe))
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900647 return -ESHUTDOWN;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900648
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900649 usbhsg_queue_push(uep, ureq);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900650
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900651 return 0;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900652}
653
654static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
655{
656 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
657 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900658 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900659
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900660 usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq));
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900661 usbhsg_queue_pop(uep, ureq, -ECONNRESET);
662
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900663 return 0;
664}
665
666static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
667{
668 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
669 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
670 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900671 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900672 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900673 unsigned long flags;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900674
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900675 usbhsg_pipe_disable(uep);
676
677 dev_dbg(dev, "set halt %d (pipe %d)\n",
678 halt, usbhs_pipe_number(pipe));
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900679
680 /******************** spin lock ********************/
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900681 usbhs_lock(priv, flags);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900682
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900683 if (halt)
684 usbhs_pipe_stall(pipe);
685 else
686 usbhs_pipe_disable(pipe);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900687
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900688 if (halt && wedge)
689 usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);
690 else
691 usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900692
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900693 usbhs_unlock(priv, flags);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900694 /******************** spin unlock ******************/
695
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900696 return 0;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900697}
698
699static int usbhsg_ep_set_halt(struct usb_ep *ep, int value)
700{
701 return __usbhsg_ep_set_halt_wedge(ep, value, 0);
702}
703
704static int usbhsg_ep_set_wedge(struct usb_ep *ep)
705{
706 return __usbhsg_ep_set_halt_wedge(ep, 1, 1);
707}
708
709static struct usb_ep_ops usbhsg_ep_ops = {
710 .enable = usbhsg_ep_enable,
711 .disable = usbhsg_ep_disable,
712
713 .alloc_request = usbhsg_ep_alloc_request,
714 .free_request = usbhsg_ep_free_request,
715
716 .queue = usbhsg_ep_queue,
717 .dequeue = usbhsg_ep_dequeue,
718
719 .set_halt = usbhsg_ep_set_halt,
720 .set_wedge = usbhsg_ep_set_wedge,
721};
722
723/*
724 * usb module start/end
725 */
726static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
727{
728 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
729 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
730 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
731 struct device *dev = usbhs_priv_to_dev(priv);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900732 unsigned long flags;
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900733 int ret = 0;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900734
735 /******************** spin lock ********************/
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900736 usbhs_lock(priv, flags);
737
738 usbhsg_status_set(gpriv, status);
739 if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
740 usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)))
741 ret = -1; /* not ready */
742
743 usbhs_unlock(priv, flags);
744 /******************** spin unlock ********************/
745
746 if (ret < 0)
747 return 0; /* not ready is not error */
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900748
749 /*
750 * enable interrupt and systems if ready
751 */
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900752 dev_dbg(dev, "start gadget\n");
753
754 /*
755 * pipe initialize and enable DCP
756 */
Kuninori Morimoto4bd04812011-06-06 14:18:07 +0900757 usbhs_pipe_init(priv,
Kuninori Morimotoe73a9892011-06-06 14:19:03 +0900758 usbhsg_dma_map_ctrl);
Kuninori Morimotodad67392011-06-06 14:18:28 +0900759 usbhs_fifo_init(priv);
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900760
Kuninori Morimotod9fa2982012-12-10 22:44:07 -0800761 /* dcp init instead of usbhsg_ep_enable() */
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900762 dcp->pipe = usbhs_dcp_malloc(priv);
763 dcp->pipe->mod_private = dcp;
Kuninori Morimotobc6fbf52011-10-10 22:04:00 -0700764 usbhs_pipe_config_update(dcp->pipe, 0, 0, 64);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900765
766 /*
767 * system config enble
768 * - HI speed
769 * - function
770 * - usb module
771 */
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900772 usbhs_sys_function_ctrl(priv, 1);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900773
774 /*
775 * enable irq callback
776 */
777 mod->irq_dev_state = usbhsg_irq_dev_state;
778 mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900779 usbhs_irq_callback_update(priv, mod);
780
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900781 return 0;
782}
783
784static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
785{
786 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
787 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
788 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
789 struct device *dev = usbhs_priv_to_dev(priv);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900790 unsigned long flags;
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900791 int ret = 0;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900792
793 /******************** spin lock ********************/
Kuninori Morimoto97664a22011-06-06 14:18:38 +0900794 usbhs_lock(priv, flags);
795
796 usbhsg_status_clr(gpriv, status);
797 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
798 !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))
799 ret = -1; /* already done */
800
801 usbhs_unlock(priv, flags);
802 /******************** spin unlock ********************/
803
804 if (ret < 0)
805 return 0; /* already done is not error */
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900806
807 /*
808 * disable interrupt and systems if 1st try
809 */
Kuninori Morimotodad67392011-06-06 14:18:28 +0900810 usbhs_fifo_quit(priv);
811
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900812 /* disable all irq */
813 mod->irq_dev_state = NULL;
814 mod->irq_ctrl_stage = NULL;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900815 usbhs_irq_callback_update(priv, mod);
816
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900817 gpriv->gadget.speed = USB_SPEED_UNKNOWN;
818
819 /* disable sys */
Kuninori Morimotodfbb7f42011-11-24 17:28:35 -0800820 usbhs_sys_set_test_mode(priv, 0);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900821 usbhs_sys_function_ctrl(priv, 0);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900822
Kuninori Morimotod9fa2982012-12-10 22:44:07 -0800823 usbhsg_ep_disable(&dcp->ep);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900824
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900825 dev_dbg(dev, "stop gadget\n");
826
827 return 0;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900828}
829
830/*
831 *
832 * linux usb function
833 *
834 */
Felipe Balbiaf1d7052011-10-10 17:11:20 +0300835static int usbhsg_gadget_start(struct usb_gadget *gadget,
836 struct usb_gadget_driver *driver)
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900837{
Felipe Balbiaf1d7052011-10-10 17:11:20 +0300838 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
Kuninori Morimotof8eff0a2011-11-17 18:19:06 -0800839 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900840
Felipe Balbiaf1d7052011-10-10 17:11:20 +0300841 if (!driver ||
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900842 !driver->setup ||
Michal Nazarewicz7177aed2011-11-19 18:27:38 +0100843 driver->max_speed < USB_SPEED_FULL)
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900844 return -EINVAL;
Kuninori Morimoto3b872182011-07-03 17:42:35 -0700845
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900846 /* first hook up the driver ... */
847 gpriv->driver = driver;
848 gpriv->gadget.dev.driver = &driver->driver;
849
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900850 return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900851}
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900852
Felipe Balbiaf1d7052011-10-10 17:11:20 +0300853static int usbhsg_gadget_stop(struct usb_gadget *gadget,
854 struct usb_gadget_driver *driver)
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900855{
Felipe Balbiaf1d7052011-10-10 17:11:20 +0300856 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
Kuninori Morimotof8eff0a2011-11-17 18:19:06 -0800857 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900858
859 if (!driver ||
Kuninori Morimoto3b872182011-07-03 17:42:35 -0700860 !driver->unbind)
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900861 return -EINVAL;
862
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900863 usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD);
Kuninori Morimoto0cdd7d42011-11-17 18:19:56 -0800864 gpriv->gadget.dev.driver = NULL;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900865 gpriv->driver = NULL;
866
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900867 return 0;
868}
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900869
870/*
871 * usb gadget ops
872 */
873static int usbhsg_get_frame(struct usb_gadget *gadget)
874{
875 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
876 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
877
878 return usbhs_frame_get_num(priv);
879}
880
kuninori.morimoto.gx@renesas.com4cd2f592012-10-15 23:24:19 -0700881static int usbhsg_pullup(struct usb_gadget *gadget, int is_on)
882{
883 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
884 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
885
886 usbhs_sys_function_pullup(priv, is_on);
887
888 return 0;
889}
890
Shimoda, Yoshihirocac402d2012-03-16 13:10:15 +0900891static int usbhsg_set_selfpowered(struct usb_gadget *gadget, int is_self)
892{
893 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
894
895 if (is_self)
896 usbhsg_status_set(gpriv, USBHSG_STATUS_SELF_POWERED);
897 else
898 usbhsg_status_clr(gpriv, USBHSG_STATUS_SELF_POWERED);
899
900 return 0;
901}
902
Felipe Balbieeef4582013-01-24 17:58:16 +0200903static const struct usb_gadget_ops usbhsg_gadget_ops = {
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900904 .get_frame = usbhsg_get_frame,
Shimoda, Yoshihirocac402d2012-03-16 13:10:15 +0900905 .set_selfpowered = usbhsg_set_selfpowered,
Felipe Balbiaf1d7052011-10-10 17:11:20 +0300906 .udc_start = usbhsg_gadget_start,
907 .udc_stop = usbhsg_gadget_stop,
kuninori.morimoto.gx@renesas.com4cd2f592012-10-15 23:24:19 -0700908 .pullup = usbhsg_pullup,
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900909};
910
911static int usbhsg_start(struct usbhs_priv *priv)
912{
913 return usbhsg_try_start(priv, USBHSG_STATUS_STARTED);
914}
915
916static int usbhsg_stop(struct usbhs_priv *priv)
917{
Kuninori Morimoto8885a892011-11-17 18:19:38 -0800918 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
919
920 /* cable disconnect */
921 if (gpriv->driver &&
922 gpriv->driver->disconnect)
923 gpriv->driver->disconnect(&gpriv->gadget);
924
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900925 return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED);
926}
927
Kuninori Morimoto3b2a2e42012-02-20 17:35:50 -0800928static void usbhs_mod_gadget_release(struct device *pdev)
929{
930 /* do nothing */
931}
932
Kuninori Morimotob7a8d172011-10-26 19:33:49 -0700933int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900934{
935 struct usbhsg_gpriv *gpriv;
936 struct usbhsg_uep *uep;
937 struct device *dev = usbhs_priv_to_dev(priv);
938 int pipe_size = usbhs_get_dparam(priv, pipe_size);
939 int i;
Sebastian Andrzej Siewior0f913492011-06-28 16:33:47 +0300940 int ret;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900941
942 gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL);
943 if (!gpriv) {
944 dev_err(dev, "Could not allocate gadget priv\n");
945 return -ENOMEM;
946 }
947
948 uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL);
949 if (!uep) {
950 dev_err(dev, "Could not allocate ep\n");
Sebastian Andrzej Siewior0f913492011-06-28 16:33:47 +0300951 ret = -ENOMEM;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900952 goto usbhs_mod_gadget_probe_err_gpriv;
953 }
954
955 /*
956 * CAUTION
957 *
958 * There is no guarantee that it is possible to access usb module here.
959 * Don't accesses to it.
960 * The accesse will be enable after "usbhsg_start"
961 */
962
963 /*
964 * register itself
965 */
966 usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET);
967
968 /* init gpriv */
969 gpriv->mod.name = "gadget";
970 gpriv->mod.start = usbhsg_start;
971 gpriv->mod.stop = usbhsg_stop;
972 gpriv->uep = uep;
973 gpriv->uep_size = pipe_size;
974 usbhsg_status_init(gpriv);
975
976 /*
977 * init gadget
978 */
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900979 dev_set_name(&gpriv->gadget.dev, "gadget");
980 gpriv->gadget.dev.parent = dev;
Kuninori Morimoto3b2a2e42012-02-20 17:35:50 -0800981 gpriv->gadget.dev.release = usbhs_mod_gadget_release;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900982 gpriv->gadget.name = "renesas_usbhs_udc";
983 gpriv->gadget.ops = &usbhsg_gadget_ops;
Michal Nazarewiczd327ab52011-11-19 18:27:37 +0100984 gpriv->gadget.max_speed = USB_SPEED_HIGH;
Kuninori Morimotof8eff0a2011-11-17 18:19:06 -0800985 ret = device_register(&gpriv->gadget.dev);
986 if (ret < 0)
987 goto err_add_udc;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900988
989 INIT_LIST_HEAD(&gpriv->gadget.ep_list);
990
991 /*
992 * init usb_ep
993 */
994 usbhsg_for_each_uep_with_dcp(uep, gpriv, i) {
995 uep->gpriv = gpriv;
Kuninori Morimoto58482942012-12-10 22:43:45 -0800996 uep->pipe = NULL;
Kuninori Morimoto2f983822011-04-05 11:40:54 +0900997 snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i);
998
999 uep->ep.name = uep->ep_name;
1000 uep->ep.ops = &usbhsg_ep_ops;
1001 INIT_LIST_HEAD(&uep->ep.ep_list);
Kuninori Morimoto2f983822011-04-05 11:40:54 +09001002
1003 /* init DCP */
1004 if (usbhsg_is_dcp(uep)) {
1005 gpriv->gadget.ep0 = &uep->ep;
1006 uep->ep.maxpacket = 64;
1007 }
1008 /* init normal pipe */
1009 else {
1010 uep->ep.maxpacket = 512;
1011 list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list);
1012 }
1013 }
1014
Sebastian Andrzej Siewior0f913492011-06-28 16:33:47 +03001015 ret = usb_add_gadget_udc(dev, &gpriv->gadget);
1016 if (ret)
Kuninori Morimotof8eff0a2011-11-17 18:19:06 -08001017 goto err_register;
Sebastian Andrzej Siewior0f913492011-06-28 16:33:47 +03001018
1019
Kuninori Morimoto2f983822011-04-05 11:40:54 +09001020 dev_info(dev, "gadget probed\n");
1021
1022 return 0;
Kuninori Morimotof8eff0a2011-11-17 18:19:06 -08001023
1024err_register:
1025 device_unregister(&gpriv->gadget.dev);
Sebastian Andrzej Siewior0f913492011-06-28 16:33:47 +03001026err_add_udc:
1027 kfree(gpriv->uep);
Kuninori Morimoto2f983822011-04-05 11:40:54 +09001028
1029usbhs_mod_gadget_probe_err_gpriv:
1030 kfree(gpriv);
1031
Sebastian Andrzej Siewior0f913492011-06-28 16:33:47 +03001032 return ret;
Kuninori Morimoto2f983822011-04-05 11:40:54 +09001033}
1034
Kuninori Morimotob7a8d172011-10-26 19:33:49 -07001035void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
Kuninori Morimoto2f983822011-04-05 11:40:54 +09001036{
1037 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
1038
Sebastian Andrzej Siewior0f913492011-06-28 16:33:47 +03001039 usb_del_gadget_udc(&gpriv->gadget);
Kuninori Morimoto3b872182011-07-03 17:42:35 -07001040
Kuninori Morimotof8eff0a2011-11-17 18:19:06 -08001041 device_unregister(&gpriv->gadget.dev);
1042
Sebastian Andrzej Siewior3af51ac2011-06-03 19:50:48 +02001043 kfree(gpriv->uep);
Kuninori Morimoto2f983822011-04-05 11:40:54 +09001044 kfree(gpriv);
1045}