Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 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 | */ |
| 17 | #include <linux/io.h> |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/platform_device.h> |
| 20 | #include <linux/usb/ch9.h> |
| 21 | #include <linux/usb/gadget.h> |
| 22 | #include "common.h" |
| 23 | |
| 24 | /* |
| 25 | * struct |
| 26 | */ |
| 27 | struct usbhsg_request { |
| 28 | struct usb_request req; |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 29 | struct usbhs_pkt pkt; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 30 | }; |
| 31 | |
| 32 | #define EP_NAME_SIZE 8 |
| 33 | struct usbhsg_gpriv; |
| 34 | struct usbhsg_pipe_handle; |
| 35 | struct usbhsg_uep { |
| 36 | struct usb_ep ep; |
| 37 | struct usbhs_pipe *pipe; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 38 | |
| 39 | char ep_name[EP_NAME_SIZE]; |
| 40 | |
| 41 | struct usbhsg_gpriv *gpriv; |
| 42 | struct usbhsg_pipe_handle *handler; |
| 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 | |
| 60 | struct usbhsg_pipe_handle { |
| 61 | int (*prepare)(struct usbhsg_uep *uep, struct usbhsg_request *ureq); |
| 62 | int (*try_run)(struct usbhsg_uep *uep, struct usbhsg_request *ureq); |
| 63 | void (*irq_mask)(struct usbhsg_uep *uep, int enable); |
| 64 | }; |
| 65 | |
| 66 | struct usbhsg_recip_handle { |
| 67 | char *name; |
| 68 | int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep, |
| 69 | struct usb_ctrlrequest *ctrl); |
| 70 | int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep, |
| 71 | struct usb_ctrlrequest *ctrl); |
| 72 | int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep, |
| 73 | struct usb_ctrlrequest *ctrl); |
| 74 | }; |
| 75 | |
| 76 | /* |
| 77 | * macro |
| 78 | */ |
| 79 | #define usbhsg_priv_to_gpriv(priv) \ |
| 80 | container_of( \ |
| 81 | usbhs_mod_get(priv, USBHS_GADGET), \ |
| 82 | struct usbhsg_gpriv, mod) |
| 83 | |
| 84 | #define __usbhsg_for_each_uep(start, pos, g, i) \ |
| 85 | for (i = start, pos = (g)->uep; \ |
| 86 | i < (g)->uep_size; \ |
| 87 | i++, pos = (g)->uep + i) |
| 88 | |
| 89 | #define usbhsg_for_each_uep(pos, gpriv, i) \ |
| 90 | __usbhsg_for_each_uep(1, pos, gpriv, i) |
| 91 | |
| 92 | #define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \ |
| 93 | __usbhsg_for_each_uep(0, pos, gpriv, i) |
| 94 | |
| 95 | #define usbhsg_gadget_to_gpriv(g)\ |
| 96 | container_of(g, struct usbhsg_gpriv, gadget) |
| 97 | |
| 98 | #define usbhsg_req_to_ureq(r)\ |
| 99 | container_of(r, struct usbhsg_request, req) |
| 100 | |
| 101 | #define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep) |
| 102 | #define usbhsg_gpriv_to_lock(gp) usbhs_priv_to_lock((gp)->mod.priv) |
| 103 | #define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv) |
| 104 | #define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv) |
| 105 | #define usbhsg_gpriv_to_dcp(gp) ((gp)->uep) |
| 106 | #define usbhsg_gpriv_to_nth_uep(gp, i) ((gp)->uep + i) |
| 107 | #define usbhsg_uep_to_gpriv(u) ((u)->gpriv) |
| 108 | #define usbhsg_uep_to_pipe(u) ((u)->pipe) |
| 109 | #define usbhsg_pipe_to_uep(p) ((p)->mod_private) |
| 110 | #define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv)) |
| 111 | |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 112 | #define usbhsg_ureq_to_pkt(u) (&(u)->pkt) |
| 113 | #define usbhsg_pkt_to_ureq(i) \ |
| 114 | container_of(i, struct usbhsg_request, pkt) |
| 115 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 116 | #define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN) |
| 117 | |
| 118 | /* status */ |
| 119 | #define usbhsg_status_init(gp) do {(gp)->status = 0; } while (0) |
| 120 | #define usbhsg_status_set(gp, b) (gp->status |= b) |
| 121 | #define usbhsg_status_clr(gp, b) (gp->status &= ~b) |
| 122 | #define usbhsg_status_has(gp, b) (gp->status & b) |
| 123 | |
| 124 | /* |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 125 | * usbhsg_trylock |
| 126 | * |
| 127 | * This driver don't use spin_try_lock |
| 128 | * to avoid warning of CONFIG_DEBUG_SPINLOCK |
| 129 | */ |
| 130 | static spinlock_t *usbhsg_trylock(struct usbhsg_gpriv *gpriv, |
| 131 | unsigned long *flags) |
| 132 | { |
| 133 | spinlock_t *lock = usbhsg_gpriv_to_lock(gpriv); |
| 134 | |
| 135 | /* check spin lock status |
| 136 | * to avoid deadlock/nest */ |
| 137 | if (spin_is_locked(lock)) |
| 138 | return NULL; |
| 139 | |
| 140 | spin_lock_irqsave(lock, *flags); |
| 141 | |
| 142 | return lock; |
| 143 | } |
| 144 | |
| 145 | static void usbhsg_unlock(spinlock_t *lock, unsigned long *flags) |
| 146 | { |
| 147 | if (!lock) |
| 148 | return; |
| 149 | |
| 150 | spin_unlock_irqrestore(lock, *flags); |
| 151 | } |
| 152 | |
| 153 | /* |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 154 | * list push/pop |
| 155 | */ |
| 156 | static void usbhsg_queue_push(struct usbhsg_uep *uep, |
| 157 | struct usbhsg_request *ureq) |
| 158 | { |
| 159 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
| 160 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
| 161 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
Kuninori Morimoto | 6acb95d | 2011-06-06 14:18:16 +0900 | [diff] [blame^] | 162 | struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 163 | |
| 164 | /* |
| 165 | ********* assume under spin lock ********* |
| 166 | */ |
Kuninori Morimoto | 6acb95d | 2011-06-06 14:18:16 +0900 | [diff] [blame^] | 167 | usbhs_pkt_push(pipe, pkt); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 168 | ureq->req.actual = 0; |
| 169 | ureq->req.status = -EINPROGRESS; |
| 170 | |
| 171 | dev_dbg(dev, "pipe %d : queue push (%d)\n", |
| 172 | usbhs_pipe_number(pipe), |
| 173 | ureq->req.length); |
| 174 | } |
| 175 | |
| 176 | static struct usbhsg_request *usbhsg_queue_get(struct usbhsg_uep *uep) |
| 177 | { |
Kuninori Morimoto | 6acb95d | 2011-06-06 14:18:16 +0900 | [diff] [blame^] | 178 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
| 179 | struct usbhs_pkt *pkt = usbhs_pkt_get(pipe); |
| 180 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 181 | /* |
| 182 | ********* assume under spin lock ********* |
| 183 | */ |
Kuninori Morimoto | 6acb95d | 2011-06-06 14:18:16 +0900 | [diff] [blame^] | 184 | if (!pkt) |
| 185 | return 0; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 186 | |
Kuninori Morimoto | 6acb95d | 2011-06-06 14:18:16 +0900 | [diff] [blame^] | 187 | return usbhsg_pkt_to_ureq(pkt); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 188 | } |
| 189 | |
| 190 | #define usbhsg_queue_prepare(uep) __usbhsg_queue_handler(uep, 1); |
| 191 | #define usbhsg_queue_handle(uep) __usbhsg_queue_handler(uep, 0); |
| 192 | static int __usbhsg_queue_handler(struct usbhsg_uep *uep, int prepare) |
| 193 | { |
| 194 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
| 195 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
| 196 | struct usbhsg_request *ureq; |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 197 | spinlock_t *lock; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 198 | unsigned long flags; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 199 | int ret = 0; |
| 200 | |
| 201 | if (!uep->handler) { |
| 202 | dev_err(dev, "no handler function\n"); |
| 203 | return -EIO; |
| 204 | } |
| 205 | |
| 206 | /* |
| 207 | * CAUTION [*queue handler*] |
| 208 | * |
| 209 | * This function will be called for start/restart queue operation. |
| 210 | * OTOH the most much worry for USB driver is spinlock nest. |
| 211 | * Specially it are |
| 212 | * - usb_ep_ops :: queue |
| 213 | * - usb_request :: complete |
| 214 | * |
| 215 | * But the caller of this function need not care about spinlock. |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 216 | * This function is using usbhsg_trylock for it. |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 217 | * if "is_locked" is 1, this mean this function lock it. |
| 218 | * but if it is 0, this mean it is already under spin lock. |
| 219 | * see also |
| 220 | * CAUTION [*endpoint queue*] |
| 221 | * CAUTION [*request complete*] |
| 222 | */ |
| 223 | |
| 224 | /****************** spin try lock *******************/ |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 225 | lock = usbhsg_trylock(gpriv, &flags); |
| 226 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 227 | ureq = usbhsg_queue_get(uep); |
| 228 | if (ureq) { |
| 229 | if (prepare) |
| 230 | ret = uep->handler->prepare(uep, ureq); |
| 231 | else |
| 232 | ret = uep->handler->try_run(uep, ureq); |
| 233 | } |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 234 | usbhsg_unlock(lock, &flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 235 | /******************** spin unlock ******************/ |
| 236 | |
| 237 | return ret; |
| 238 | } |
| 239 | |
| 240 | static void usbhsg_queue_pop(struct usbhsg_uep *uep, |
| 241 | struct usbhsg_request *ureq, |
| 242 | int status) |
| 243 | { |
| 244 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
| 245 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
| 246 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
Kuninori Morimoto | 6acb95d | 2011-06-06 14:18:16 +0900 | [diff] [blame^] | 247 | struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 248 | |
| 249 | /* |
| 250 | ********* assume under spin lock ********* |
| 251 | */ |
| 252 | |
| 253 | /* |
| 254 | * CAUTION [*request complete*] |
| 255 | * |
| 256 | * There is a possibility not to be called in correct order |
| 257 | * if "complete" is called without spinlock. |
| 258 | * |
| 259 | * So, this function assume it is under spinlock, |
| 260 | * and call usb_request :: complete. |
| 261 | * |
| 262 | * But this "complete" will push next usb_request. |
| 263 | * It mean "usb_ep_ops :: queue" which is using spinlock is called |
| 264 | * under spinlock. |
| 265 | * |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 266 | * To avoid dead-lock, this driver is using usbhsg_trylock. |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 267 | * CAUTION [*endpoint queue*] |
| 268 | * CAUTION [*queue handler*] |
| 269 | */ |
| 270 | |
| 271 | dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe)); |
| 272 | |
Kuninori Morimoto | 6acb95d | 2011-06-06 14:18:16 +0900 | [diff] [blame^] | 273 | usbhs_pkt_pop(pkt); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 274 | |
| 275 | ureq->req.status = status; |
| 276 | ureq->req.complete(&uep->ep, &ureq->req); |
| 277 | |
| 278 | /* more request ? */ |
| 279 | if (0 == status) |
| 280 | usbhsg_queue_prepare(uep); |
| 281 | } |
| 282 | |
| 283 | /* |
| 284 | * irq enable/disable function |
| 285 | */ |
| 286 | #define usbhsg_irq_callback_ctrl(uep, status, enable) \ |
| 287 | ({ \ |
| 288 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); \ |
| 289 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); \ |
| 290 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); \ |
| 291 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); \ |
| 292 | if (!mod) \ |
| 293 | return; \ |
| 294 | if (enable) \ |
| 295 | mod->irq_##status |= (1 << usbhs_pipe_number(pipe)); \ |
| 296 | else \ |
| 297 | mod->irq_##status &= ~(1 << usbhs_pipe_number(pipe)); \ |
| 298 | usbhs_irq_callback_update(priv, mod); \ |
| 299 | }) |
| 300 | |
| 301 | static void usbhsg_irq_empty_ctrl(struct usbhsg_uep *uep, int enable) |
| 302 | { |
| 303 | usbhsg_irq_callback_ctrl(uep, bempsts, enable); |
| 304 | } |
| 305 | |
| 306 | static void usbhsg_irq_ready_ctrl(struct usbhsg_uep *uep, int enable) |
| 307 | { |
| 308 | usbhsg_irq_callback_ctrl(uep, brdysts, enable); |
| 309 | } |
| 310 | |
| 311 | /* |
| 312 | * handler function |
| 313 | */ |
| 314 | static int usbhsg_try_run_ctrl_stage_end(struct usbhsg_uep *uep, |
| 315 | struct usbhsg_request *ureq) |
| 316 | { |
| 317 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
| 318 | |
| 319 | /* |
| 320 | ********* assume under spin lock ********* |
| 321 | */ |
| 322 | |
| 323 | usbhs_dcp_control_transfer_done(pipe); |
| 324 | usbhsg_queue_pop(uep, ureq, 0); |
| 325 | |
| 326 | return 0; |
| 327 | } |
| 328 | |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 329 | /* |
| 330 | * packet send hander |
| 331 | */ |
| 332 | static void usbhsg_try_run_send_packet_bh(struct usbhs_pkt *pkt) |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 333 | { |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 334 | struct usbhs_pipe *pipe = pkt->pipe; |
| 335 | struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe); |
| 336 | struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 337 | struct usb_request *req = &ureq->req; |
| 338 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
| 339 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 340 | int remainder, send, maxp; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 341 | int is_done = 0; |
| 342 | int enable; |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 343 | |
| 344 | maxp = pkt->maxp; |
| 345 | send = pkt->actual; |
| 346 | remainder = pkt->length; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 347 | |
| 348 | /* |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 349 | * send = 0 : send zero packet |
| 350 | * send > 0 : send data |
| 351 | * |
| 352 | * send <= max_packet |
| 353 | */ |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 354 | req->actual += send; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 355 | |
| 356 | /* send all packet ? */ |
| 357 | if (send < remainder) |
| 358 | is_done = 0; /* there are remainder data */ |
| 359 | else if (send < maxp) |
| 360 | is_done = 1; /* short packet */ |
| 361 | else |
| 362 | is_done = !req->zero; /* send zero packet ? */ |
| 363 | |
| 364 | dev_dbg(dev, " send %d (%d/ %d/ %d/ %d)\n", |
| 365 | usbhs_pipe_number(pipe), |
| 366 | remainder, send, is_done, req->zero); |
| 367 | |
| 368 | /* |
| 369 | * enable interrupt and send again in irq handler |
| 370 | * if it still have remainder data which should be sent. |
| 371 | */ |
| 372 | enable = !is_done; |
| 373 | uep->handler->irq_mask(uep, enable); |
| 374 | |
| 375 | /* |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 376 | * all data were sent ? |
| 377 | */ |
| 378 | if (is_done) { |
| 379 | /* it care below call in |
| 380 | "function mode" */ |
| 381 | if (usbhsg_is_dcp(uep)) |
| 382 | usbhs_dcp_control_transfer_done(pipe); |
| 383 | |
| 384 | usbhsg_queue_pop(uep, ureq, 0); |
| 385 | } |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 386 | } |
| 387 | |
| 388 | static int usbhsg_try_run_send_packet(struct usbhsg_uep *uep, |
| 389 | struct usbhsg_request *ureq) |
| 390 | { |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 391 | struct usb_request *req = &ureq->req; |
| 392 | struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq); |
| 393 | int ret; |
| 394 | |
| 395 | /* |
| 396 | ********* assume under spin lock ********* |
| 397 | */ |
| 398 | |
Kuninori Morimoto | 6acb95d | 2011-06-06 14:18:16 +0900 | [diff] [blame^] | 399 | usbhs_pkt_update(pkt, |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 400 | req->buf + req->actual, |
| 401 | req->length - req->actual); |
| 402 | |
| 403 | ret = usbhs_fifo_write(pkt); |
| 404 | if (ret < 0) { |
| 405 | /* pipe is busy. |
| 406 | * retry in interrupt */ |
| 407 | uep->handler->irq_mask(uep, 1); |
| 408 | } |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 409 | |
| 410 | return 0; |
| 411 | } |
| 412 | |
| 413 | static int usbhsg_prepare_send_packet(struct usbhsg_uep *uep, |
| 414 | struct usbhsg_request *ureq) |
| 415 | { |
| 416 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
| 417 | |
| 418 | /* |
| 419 | ********* assume under spin lock ********* |
| 420 | */ |
| 421 | |
| 422 | usbhs_fifo_prepare_write(pipe); |
| 423 | usbhsg_try_run_send_packet(uep, ureq); |
| 424 | |
| 425 | return 0; |
| 426 | } |
| 427 | |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 428 | /* |
| 429 | * packet recv hander |
| 430 | */ |
| 431 | static void usbhsg_try_run_receive_packet_bh(struct usbhs_pkt *pkt) |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 432 | { |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 433 | struct usbhs_pipe *pipe = pkt->pipe; |
| 434 | struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe); |
| 435 | struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 436 | struct usb_request *req = &ureq->req; |
| 437 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
| 438 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 439 | int remainder, recv, maxp; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 440 | int is_done = 0; |
| 441 | |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 442 | maxp = pkt->maxp; |
| 443 | remainder = pkt->length; |
| 444 | recv = pkt->actual; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 445 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 446 | /* |
| 447 | * recv < 0 : pipe busy |
| 448 | * recv >= 0 : receive data |
| 449 | * |
| 450 | * recv <= max_packet |
| 451 | */ |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 452 | |
| 453 | /* update parameters */ |
| 454 | req->actual += recv; |
| 455 | |
| 456 | if ((recv == remainder) || /* receive all data */ |
| 457 | (recv < maxp)) /* short packet */ |
| 458 | is_done = 1; |
| 459 | |
| 460 | dev_dbg(dev, " recv %d (%d/ %d/ %d/ %d)\n", |
| 461 | usbhs_pipe_number(pipe), |
| 462 | remainder, recv, is_done, req->zero); |
| 463 | |
| 464 | /* read all data ? */ |
| 465 | if (is_done) { |
| 466 | int disable = 0; |
| 467 | |
| 468 | uep->handler->irq_mask(uep, disable); |
Kuninori Morimoto | e8d548d | 2011-06-06 14:18:03 +0900 | [diff] [blame] | 469 | usbhs_pipe_disable(pipe); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 470 | usbhsg_queue_pop(uep, ureq, 0); |
| 471 | } |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 472 | } |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 473 | |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 474 | static int usbhsg_try_run_receive_packet(struct usbhsg_uep *uep, |
| 475 | struct usbhsg_request *ureq) |
| 476 | { |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 477 | struct usb_request *req = &ureq->req; |
| 478 | struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq); |
| 479 | |
| 480 | /* |
| 481 | ********* assume under spin lock ********* |
| 482 | */ |
| 483 | |
Kuninori Morimoto | 6acb95d | 2011-06-06 14:18:16 +0900 | [diff] [blame^] | 484 | usbhs_pkt_update(pkt, |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 485 | req->buf + req->actual, |
| 486 | req->length - req->actual); |
| 487 | |
| 488 | return usbhs_fifo_read(pkt); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 489 | } |
| 490 | |
| 491 | static int usbhsg_prepare_receive_packet(struct usbhsg_uep *uep, |
| 492 | struct usbhsg_request *ureq) |
| 493 | { |
| 494 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
| 495 | int enable = 1; |
| 496 | int ret; |
| 497 | |
| 498 | /* |
| 499 | ********* assume under spin lock ********* |
| 500 | */ |
| 501 | |
| 502 | ret = usbhs_fifo_prepare_read(pipe); |
| 503 | if (ret < 0) |
| 504 | return ret; |
| 505 | |
| 506 | /* |
| 507 | * data will be read in interrupt handler |
| 508 | */ |
| 509 | uep->handler->irq_mask(uep, enable); |
| 510 | |
| 511 | return ret; |
| 512 | } |
| 513 | |
| 514 | static struct usbhsg_pipe_handle usbhsg_handler_send_by_empty = { |
| 515 | .prepare = usbhsg_prepare_send_packet, |
| 516 | .try_run = usbhsg_try_run_send_packet, |
| 517 | .irq_mask = usbhsg_irq_empty_ctrl, |
| 518 | }; |
| 519 | |
| 520 | static struct usbhsg_pipe_handle usbhsg_handler_send_by_ready = { |
| 521 | .prepare = usbhsg_prepare_send_packet, |
| 522 | .try_run = usbhsg_try_run_send_packet, |
| 523 | .irq_mask = usbhsg_irq_ready_ctrl, |
| 524 | }; |
| 525 | |
| 526 | static struct usbhsg_pipe_handle usbhsg_handler_recv_by_ready = { |
| 527 | .prepare = usbhsg_prepare_receive_packet, |
| 528 | .try_run = usbhsg_try_run_receive_packet, |
| 529 | .irq_mask = usbhsg_irq_ready_ctrl, |
| 530 | }; |
| 531 | |
| 532 | static struct usbhsg_pipe_handle usbhsg_handler_ctrl_stage_end = { |
| 533 | .prepare = usbhsg_try_run_ctrl_stage_end, |
| 534 | .try_run = usbhsg_try_run_ctrl_stage_end, |
| 535 | }; |
| 536 | |
| 537 | /* |
| 538 | * DCP pipe can NOT use "ready interrupt" for "send" |
| 539 | * it should use "empty" interrupt. |
| 540 | * see |
| 541 | * "Operation" - "Interrupt Function" - "BRDY Interrupt" |
| 542 | * |
| 543 | * on the other hand, normal pipe can use "ready interrupt" for "send" |
| 544 | * even though it is single/double buffer |
| 545 | */ |
| 546 | #define usbhsg_handler_send_ctrl usbhsg_handler_send_by_empty |
| 547 | #define usbhsg_handler_recv_ctrl usbhsg_handler_recv_by_ready |
| 548 | |
| 549 | #define usbhsg_handler_send_packet usbhsg_handler_send_by_ready |
| 550 | #define usbhsg_handler_recv_packet usbhsg_handler_recv_by_ready |
| 551 | |
| 552 | /* |
| 553 | * USB_TYPE_STANDARD / clear feature functions |
| 554 | */ |
| 555 | static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv, |
| 556 | struct usbhsg_uep *uep, |
| 557 | struct usb_ctrlrequest *ctrl) |
| 558 | { |
| 559 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 560 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); |
| 561 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); |
| 562 | |
| 563 | usbhs_dcp_control_transfer_done(pipe); |
| 564 | |
| 565 | return 0; |
| 566 | } |
| 567 | |
| 568 | static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv, |
| 569 | struct usbhsg_uep *uep, |
| 570 | struct usb_ctrlrequest *ctrl) |
| 571 | { |
| 572 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
| 573 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
| 574 | |
| 575 | if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) { |
Kuninori Morimoto | e8d548d | 2011-06-06 14:18:03 +0900 | [diff] [blame] | 576 | usbhs_pipe_disable(pipe); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 577 | usbhs_pipe_clear_sequence(pipe); |
Kuninori Morimoto | e8d548d | 2011-06-06 14:18:03 +0900 | [diff] [blame] | 578 | usbhs_pipe_enable(pipe); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 579 | } |
| 580 | |
| 581 | usbhsg_recip_handler_std_control_done(priv, uep, ctrl); |
| 582 | |
| 583 | usbhsg_queue_prepare(uep); |
| 584 | |
| 585 | return 0; |
| 586 | } |
| 587 | |
| 588 | struct usbhsg_recip_handle req_clear_feature = { |
| 589 | .name = "clear feature", |
| 590 | .device = usbhsg_recip_handler_std_control_done, |
| 591 | .interface = usbhsg_recip_handler_std_control_done, |
| 592 | .endpoint = usbhsg_recip_handler_std_clear_endpoint, |
| 593 | }; |
| 594 | |
| 595 | /* |
| 596 | * USB_TYPE handler |
| 597 | */ |
| 598 | static int usbhsg_recip_run_handle(struct usbhs_priv *priv, |
| 599 | struct usbhsg_recip_handle *handler, |
| 600 | struct usb_ctrlrequest *ctrl) |
| 601 | { |
| 602 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 603 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
| 604 | struct usbhsg_uep *uep; |
| 605 | int recip = ctrl->bRequestType & USB_RECIP_MASK; |
| 606 | int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; |
| 607 | int ret; |
| 608 | int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep, |
| 609 | struct usb_ctrlrequest *ctrl); |
| 610 | char *msg; |
| 611 | |
| 612 | uep = usbhsg_gpriv_to_nth_uep(gpriv, nth); |
Kuninori Morimoto | 9a28b7b | 2011-04-21 14:10:12 +0900 | [diff] [blame] | 613 | if (!usbhsg_uep_to_pipe(uep)) { |
| 614 | dev_err(dev, "wrong recip request\n"); |
| 615 | return -EINVAL; |
| 616 | } |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 617 | |
| 618 | switch (recip) { |
| 619 | case USB_RECIP_DEVICE: |
| 620 | msg = "DEVICE"; |
| 621 | func = handler->device; |
| 622 | break; |
| 623 | case USB_RECIP_INTERFACE: |
| 624 | msg = "INTERFACE"; |
| 625 | func = handler->interface; |
| 626 | break; |
| 627 | case USB_RECIP_ENDPOINT: |
| 628 | msg = "ENDPOINT"; |
| 629 | func = handler->endpoint; |
| 630 | break; |
| 631 | default: |
| 632 | dev_warn(dev, "unsupported RECIP(%d)\n", recip); |
| 633 | func = NULL; |
| 634 | ret = -EINVAL; |
| 635 | } |
| 636 | |
| 637 | if (func) { |
| 638 | dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg); |
| 639 | ret = func(priv, uep, ctrl); |
| 640 | } |
| 641 | |
| 642 | return ret; |
| 643 | } |
| 644 | |
| 645 | /* |
| 646 | * irq functions |
| 647 | * |
| 648 | * it will be called from usbhs_interrupt |
| 649 | */ |
| 650 | static int usbhsg_irq_dev_state(struct usbhs_priv *priv, |
| 651 | struct usbhs_irq_state *irq_state) |
| 652 | { |
| 653 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 654 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
| 655 | |
| 656 | gpriv->gadget.speed = usbhs_status_get_usb_speed(irq_state); |
| 657 | |
| 658 | dev_dbg(dev, "state = %x : speed : %d\n", |
| 659 | usbhs_status_get_device_state(irq_state), |
| 660 | gpriv->gadget.speed); |
| 661 | |
| 662 | return 0; |
| 663 | } |
| 664 | |
| 665 | static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv, |
| 666 | struct usbhs_irq_state *irq_state) |
| 667 | { |
| 668 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 669 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); |
| 670 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); |
| 671 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
| 672 | struct usb_ctrlrequest ctrl; |
| 673 | struct usbhsg_recip_handle *recip_handler = NULL; |
| 674 | int stage = usbhs_status_get_ctrl_stage(irq_state); |
| 675 | int ret = 0; |
| 676 | |
| 677 | dev_dbg(dev, "stage = %d\n", stage); |
| 678 | |
| 679 | /* |
| 680 | * see Manual |
| 681 | * |
| 682 | * "Operation" |
| 683 | * - "Interrupt Function" |
| 684 | * - "Control Transfer Stage Transition Interrupt" |
| 685 | * - Fig. "Control Transfer Stage Transitions" |
| 686 | */ |
| 687 | |
| 688 | switch (stage) { |
| 689 | case READ_DATA_STAGE: |
| 690 | dcp->handler = &usbhsg_handler_send_ctrl; |
| 691 | break; |
| 692 | case WRITE_DATA_STAGE: |
| 693 | dcp->handler = &usbhsg_handler_recv_ctrl; |
| 694 | break; |
| 695 | case NODATA_STATUS_STAGE: |
| 696 | dcp->handler = &usbhsg_handler_ctrl_stage_end; |
| 697 | break; |
| 698 | default: |
| 699 | return ret; |
| 700 | } |
| 701 | |
| 702 | /* |
| 703 | * get usb request |
| 704 | */ |
| 705 | usbhs_usbreq_get_val(priv, &ctrl); |
| 706 | |
| 707 | switch (ctrl.bRequestType & USB_TYPE_MASK) { |
| 708 | case USB_TYPE_STANDARD: |
| 709 | switch (ctrl.bRequest) { |
| 710 | case USB_REQ_CLEAR_FEATURE: |
| 711 | recip_handler = &req_clear_feature; |
| 712 | break; |
| 713 | } |
| 714 | } |
| 715 | |
| 716 | /* |
| 717 | * setup stage / run recip |
| 718 | */ |
| 719 | if (recip_handler) |
| 720 | ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl); |
| 721 | else |
| 722 | ret = gpriv->driver->setup(&gpriv->gadget, &ctrl); |
| 723 | |
| 724 | if (ret < 0) |
Kuninori Morimoto | e8d548d | 2011-06-06 14:18:03 +0900 | [diff] [blame] | 725 | usbhs_pipe_stall(pipe); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 726 | |
| 727 | return ret; |
| 728 | } |
| 729 | |
| 730 | static int usbhsg_irq_empty(struct usbhs_priv *priv, |
| 731 | struct usbhs_irq_state *irq_state) |
| 732 | { |
| 733 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 734 | struct usbhsg_uep *uep; |
| 735 | struct usbhs_pipe *pipe; |
| 736 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
| 737 | int i, ret; |
| 738 | |
| 739 | if (!irq_state->bempsts) { |
| 740 | dev_err(dev, "debug %s !!\n", __func__); |
| 741 | return -EIO; |
| 742 | } |
| 743 | |
| 744 | dev_dbg(dev, "irq empty [0x%04x]\n", irq_state->bempsts); |
| 745 | |
| 746 | /* |
| 747 | * search interrupted "pipe" |
| 748 | * not "uep". |
| 749 | */ |
| 750 | usbhs_for_each_pipe_with_dcp(pipe, priv, i) { |
| 751 | if (!(irq_state->bempsts & (1 << i))) |
| 752 | continue; |
| 753 | |
| 754 | uep = usbhsg_pipe_to_uep(pipe); |
| 755 | ret = usbhsg_queue_handle(uep); |
| 756 | if (ret < 0) |
| 757 | dev_err(dev, "send error %d : %d\n", i, ret); |
| 758 | } |
| 759 | |
| 760 | return 0; |
| 761 | } |
| 762 | |
| 763 | static int usbhsg_irq_ready(struct usbhs_priv *priv, |
| 764 | struct usbhs_irq_state *irq_state) |
| 765 | { |
| 766 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 767 | struct usbhsg_uep *uep; |
| 768 | struct usbhs_pipe *pipe; |
| 769 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
| 770 | int i, ret; |
| 771 | |
| 772 | if (!irq_state->brdysts) { |
| 773 | dev_err(dev, "debug %s !!\n", __func__); |
| 774 | return -EIO; |
| 775 | } |
| 776 | |
| 777 | dev_dbg(dev, "irq ready [0x%04x]\n", irq_state->brdysts); |
| 778 | |
| 779 | /* |
| 780 | * search interrupted "pipe" |
| 781 | * not "uep". |
| 782 | */ |
| 783 | usbhs_for_each_pipe_with_dcp(pipe, priv, i) { |
| 784 | if (!(irq_state->brdysts & (1 << i))) |
| 785 | continue; |
| 786 | |
| 787 | uep = usbhsg_pipe_to_uep(pipe); |
| 788 | ret = usbhsg_queue_handle(uep); |
| 789 | if (ret < 0) |
| 790 | dev_err(dev, "receive error %d : %d\n", i, ret); |
| 791 | } |
| 792 | |
| 793 | return 0; |
| 794 | } |
| 795 | |
| 796 | /* |
| 797 | * |
| 798 | * usb_dcp_ops |
| 799 | * |
| 800 | */ |
| 801 | static int usbhsg_dcp_enable(struct usbhsg_uep *uep) |
| 802 | { |
| 803 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
| 804 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
| 805 | struct usbhs_pipe *pipe; |
| 806 | |
| 807 | /* |
| 808 | ********* assume under spin lock ********* |
| 809 | */ |
| 810 | |
| 811 | pipe = usbhs_dcp_malloc(priv); |
| 812 | if (!pipe) |
| 813 | return -EIO; |
| 814 | |
| 815 | uep->pipe = pipe; |
| 816 | uep->pipe->mod_private = uep; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 817 | |
| 818 | return 0; |
| 819 | } |
| 820 | |
| 821 | #define usbhsg_dcp_disable usbhsg_pipe_disable |
| 822 | static int usbhsg_pipe_disable(struct usbhsg_uep *uep) |
| 823 | { |
| 824 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
| 825 | struct usbhsg_request *ureq; |
| 826 | int disable = 0; |
| 827 | |
| 828 | /* |
| 829 | ********* assume under spin lock ********* |
| 830 | */ |
| 831 | |
Kuninori Morimoto | e8d548d | 2011-06-06 14:18:03 +0900 | [diff] [blame] | 832 | usbhs_pipe_disable(pipe); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 833 | |
| 834 | /* |
| 835 | * disable pipe irq |
| 836 | */ |
| 837 | usbhsg_irq_empty_ctrl(uep, disable); |
| 838 | usbhsg_irq_ready_ctrl(uep, disable); |
| 839 | |
| 840 | while (1) { |
| 841 | ureq = usbhsg_queue_get(uep); |
| 842 | if (!ureq) |
| 843 | break; |
| 844 | |
| 845 | usbhsg_queue_pop(uep, ureq, -ECONNRESET); |
| 846 | } |
| 847 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 848 | return 0; |
| 849 | } |
| 850 | |
Kuninori Morimoto | 409ba9e | 2011-04-26 09:21:35 +0900 | [diff] [blame] | 851 | static void usbhsg_uep_init(struct usbhsg_gpriv *gpriv) |
| 852 | { |
| 853 | int i; |
| 854 | struct usbhsg_uep *uep; |
| 855 | |
| 856 | usbhsg_for_each_uep_with_dcp(uep, gpriv, i) |
| 857 | uep->pipe = NULL; |
| 858 | } |
| 859 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 860 | /* |
| 861 | * |
| 862 | * usb_ep_ops |
| 863 | * |
| 864 | */ |
| 865 | static int usbhsg_ep_enable(struct usb_ep *ep, |
| 866 | const struct usb_endpoint_descriptor *desc) |
| 867 | { |
| 868 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); |
| 869 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
| 870 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
| 871 | struct usbhs_pipe *pipe; |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 872 | spinlock_t *lock; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 873 | unsigned long flags; |
| 874 | int ret = -EIO; |
| 875 | |
Kuninori Morimoto | 409ba9e | 2011-04-26 09:21:35 +0900 | [diff] [blame] | 876 | /* |
| 877 | * if it already have pipe, |
| 878 | * nothing to do |
| 879 | */ |
| 880 | if (uep->pipe) |
| 881 | return 0; |
| 882 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 883 | /******************** spin lock ********************/ |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 884 | lock = usbhsg_trylock(gpriv, &flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 885 | |
| 886 | pipe = usbhs_pipe_malloc(priv, desc); |
| 887 | if (pipe) { |
| 888 | uep->pipe = pipe; |
| 889 | pipe->mod_private = uep; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 890 | |
| 891 | if (usb_endpoint_dir_in(desc)) |
| 892 | uep->handler = &usbhsg_handler_send_packet; |
| 893 | else |
| 894 | uep->handler = &usbhsg_handler_recv_packet; |
| 895 | |
| 896 | ret = 0; |
| 897 | } |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 898 | |
| 899 | usbhsg_unlock(lock, &flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 900 | /******************** spin unlock ******************/ |
| 901 | |
| 902 | return ret; |
| 903 | } |
| 904 | |
| 905 | static int usbhsg_ep_disable(struct usb_ep *ep) |
| 906 | { |
| 907 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); |
| 908 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 909 | spinlock_t *lock; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 910 | unsigned long flags; |
| 911 | int ret; |
| 912 | |
| 913 | /******************** spin lock ********************/ |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 914 | lock = usbhsg_trylock(gpriv, &flags); |
| 915 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 916 | ret = usbhsg_pipe_disable(uep); |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 917 | |
| 918 | usbhsg_unlock(lock, &flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 919 | /******************** spin unlock ******************/ |
| 920 | |
| 921 | return ret; |
| 922 | } |
| 923 | |
| 924 | static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep, |
| 925 | gfp_t gfp_flags) |
| 926 | { |
| 927 | struct usbhsg_request *ureq; |
| 928 | |
| 929 | ureq = kzalloc(sizeof *ureq, gfp_flags); |
| 930 | if (!ureq) |
| 931 | return NULL; |
| 932 | |
Kuninori Morimoto | 6acb95d | 2011-06-06 14:18:16 +0900 | [diff] [blame^] | 933 | usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq)); |
| 934 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 935 | return &ureq->req; |
| 936 | } |
| 937 | |
| 938 | static void usbhsg_ep_free_request(struct usb_ep *ep, |
| 939 | struct usb_request *req) |
| 940 | { |
| 941 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); |
| 942 | |
Kuninori Morimoto | 6acb95d | 2011-06-06 14:18:16 +0900 | [diff] [blame^] | 943 | WARN_ON(!list_empty(&ureq->pkt.node)); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 944 | kfree(ureq); |
| 945 | } |
| 946 | |
| 947 | static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req, |
| 948 | gfp_t gfp_flags) |
| 949 | { |
| 950 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); |
| 951 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
| 952 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); |
| 953 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 954 | spinlock_t *lock; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 955 | unsigned long flags; |
| 956 | int ret = 0; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 957 | |
| 958 | /* |
| 959 | * CAUTION [*endpoint queue*] |
| 960 | * |
| 961 | * This function will be called from usb_request :: complete |
| 962 | * or usb driver timing. |
| 963 | * If this function is called from usb_request :: complete, |
| 964 | * it is already under spinlock on this driver. |
| 965 | * but it is called frm usb driver, this function should call spinlock. |
| 966 | * |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 967 | * This function is using usbshg_trylock to solve this issue. |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 968 | * if "is_locked" is 1, this mean this function lock it. |
| 969 | * but if it is 0, this mean it is already under spin lock. |
| 970 | * see also |
| 971 | * CAUTION [*queue handler*] |
| 972 | * CAUTION [*request complete*] |
| 973 | */ |
| 974 | |
| 975 | /******************** spin lock ********************/ |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 976 | lock = usbhsg_trylock(gpriv, &flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 977 | |
| 978 | /* param check */ |
| 979 | if (usbhsg_is_not_connected(gpriv) || |
| 980 | unlikely(!gpriv->driver) || |
| 981 | unlikely(!pipe)) |
| 982 | ret = -ESHUTDOWN; |
| 983 | else |
| 984 | usbhsg_queue_push(uep, ureq); |
| 985 | |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 986 | usbhsg_unlock(lock, &flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 987 | /******************** spin unlock ******************/ |
| 988 | |
| 989 | usbhsg_queue_prepare(uep); |
| 990 | |
| 991 | return ret; |
| 992 | } |
| 993 | |
| 994 | static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req) |
| 995 | { |
| 996 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); |
| 997 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); |
| 998 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 999 | spinlock_t *lock; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1000 | unsigned long flags; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1001 | |
| 1002 | /* |
| 1003 | * see |
| 1004 | * CAUTION [*queue handler*] |
| 1005 | * CAUTION [*endpoint queue*] |
| 1006 | * CAUTION [*request complete*] |
| 1007 | */ |
| 1008 | |
| 1009 | /******************** spin lock ********************/ |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 1010 | lock = usbhsg_trylock(gpriv, &flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1011 | |
| 1012 | usbhsg_queue_pop(uep, ureq, -ECONNRESET); |
| 1013 | |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 1014 | usbhsg_unlock(lock, &flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1015 | /******************** spin unlock ******************/ |
| 1016 | |
| 1017 | return 0; |
| 1018 | } |
| 1019 | |
| 1020 | static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge) |
| 1021 | { |
| 1022 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); |
| 1023 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
| 1024 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
| 1025 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 1026 | spinlock_t *lock; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1027 | unsigned long flags; |
| 1028 | int ret = -EAGAIN; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1029 | |
| 1030 | /* |
| 1031 | * see |
| 1032 | * CAUTION [*queue handler*] |
| 1033 | * CAUTION [*endpoint queue*] |
| 1034 | * CAUTION [*request complete*] |
| 1035 | */ |
| 1036 | |
| 1037 | /******************** spin lock ********************/ |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 1038 | lock = usbhsg_trylock(gpriv, &flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1039 | if (!usbhsg_queue_get(uep)) { |
| 1040 | |
| 1041 | dev_dbg(dev, "set halt %d (pipe %d)\n", |
| 1042 | halt, usbhs_pipe_number(pipe)); |
| 1043 | |
| 1044 | if (halt) |
Kuninori Morimoto | e8d548d | 2011-06-06 14:18:03 +0900 | [diff] [blame] | 1045 | usbhs_pipe_stall(pipe); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1046 | else |
Kuninori Morimoto | e8d548d | 2011-06-06 14:18:03 +0900 | [diff] [blame] | 1047 | usbhs_pipe_disable(pipe); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1048 | |
| 1049 | if (halt && wedge) |
| 1050 | usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE); |
| 1051 | else |
| 1052 | usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE); |
| 1053 | |
| 1054 | ret = 0; |
| 1055 | } |
| 1056 | |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 1057 | usbhsg_unlock(lock, &flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1058 | /******************** spin unlock ******************/ |
| 1059 | |
| 1060 | return ret; |
| 1061 | } |
| 1062 | |
| 1063 | static int usbhsg_ep_set_halt(struct usb_ep *ep, int value) |
| 1064 | { |
| 1065 | return __usbhsg_ep_set_halt_wedge(ep, value, 0); |
| 1066 | } |
| 1067 | |
| 1068 | static int usbhsg_ep_set_wedge(struct usb_ep *ep) |
| 1069 | { |
| 1070 | return __usbhsg_ep_set_halt_wedge(ep, 1, 1); |
| 1071 | } |
| 1072 | |
| 1073 | static struct usb_ep_ops usbhsg_ep_ops = { |
| 1074 | .enable = usbhsg_ep_enable, |
| 1075 | .disable = usbhsg_ep_disable, |
| 1076 | |
| 1077 | .alloc_request = usbhsg_ep_alloc_request, |
| 1078 | .free_request = usbhsg_ep_free_request, |
| 1079 | |
| 1080 | .queue = usbhsg_ep_queue, |
| 1081 | .dequeue = usbhsg_ep_dequeue, |
| 1082 | |
| 1083 | .set_halt = usbhsg_ep_set_halt, |
| 1084 | .set_wedge = usbhsg_ep_set_wedge, |
| 1085 | }; |
| 1086 | |
| 1087 | /* |
| 1088 | * usb module start/end |
| 1089 | */ |
| 1090 | static int usbhsg_try_start(struct usbhs_priv *priv, u32 status) |
| 1091 | { |
| 1092 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 1093 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); |
| 1094 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); |
| 1095 | struct device *dev = usbhs_priv_to_dev(priv); |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 1096 | spinlock_t *lock; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1097 | unsigned long flags; |
| 1098 | |
| 1099 | /******************** spin lock ********************/ |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 1100 | lock = usbhsg_trylock(gpriv, &flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1101 | |
| 1102 | /* |
| 1103 | * enable interrupt and systems if ready |
| 1104 | */ |
| 1105 | usbhsg_status_set(gpriv, status); |
| 1106 | if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) && |
| 1107 | usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))) |
| 1108 | goto usbhsg_try_start_unlock; |
| 1109 | |
| 1110 | dev_dbg(dev, "start gadget\n"); |
| 1111 | |
| 1112 | /* |
| 1113 | * pipe initialize and enable DCP |
| 1114 | */ |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 1115 | usbhs_pipe_init(priv, |
| 1116 | usbhsg_try_run_send_packet_bh, |
| 1117 | usbhsg_try_run_receive_packet_bh); |
Kuninori Morimoto | 409ba9e | 2011-04-26 09:21:35 +0900 | [diff] [blame] | 1118 | usbhsg_uep_init(gpriv); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1119 | usbhsg_dcp_enable(dcp); |
| 1120 | |
| 1121 | /* |
| 1122 | * system config enble |
| 1123 | * - HI speed |
| 1124 | * - function |
| 1125 | * - usb module |
| 1126 | */ |
| 1127 | usbhs_sys_hispeed_ctrl(priv, 1); |
| 1128 | usbhs_sys_function_ctrl(priv, 1); |
| 1129 | usbhs_sys_usb_ctrl(priv, 1); |
| 1130 | |
| 1131 | /* |
| 1132 | * enable irq callback |
| 1133 | */ |
| 1134 | mod->irq_dev_state = usbhsg_irq_dev_state; |
| 1135 | mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage; |
| 1136 | mod->irq_empty = usbhsg_irq_empty; |
| 1137 | mod->irq_ready = usbhsg_irq_ready; |
| 1138 | mod->irq_bempsts = 0; |
| 1139 | mod->irq_brdysts = 0; |
| 1140 | usbhs_irq_callback_update(priv, mod); |
| 1141 | |
| 1142 | usbhsg_try_start_unlock: |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 1143 | usbhsg_unlock(lock, &flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1144 | /******************** spin unlock ********************/ |
| 1145 | |
| 1146 | return 0; |
| 1147 | } |
| 1148 | |
| 1149 | static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status) |
| 1150 | { |
| 1151 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 1152 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); |
| 1153 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); |
| 1154 | struct device *dev = usbhs_priv_to_dev(priv); |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 1155 | spinlock_t *lock; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1156 | unsigned long flags; |
| 1157 | |
| 1158 | /******************** spin lock ********************/ |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 1159 | lock = usbhsg_trylock(gpriv, &flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1160 | |
| 1161 | /* |
| 1162 | * disable interrupt and systems if 1st try |
| 1163 | */ |
| 1164 | usbhsg_status_clr(gpriv, status); |
| 1165 | if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) && |
| 1166 | !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)) |
| 1167 | goto usbhsg_try_stop_unlock; |
| 1168 | |
| 1169 | /* disable all irq */ |
| 1170 | mod->irq_dev_state = NULL; |
| 1171 | mod->irq_ctrl_stage = NULL; |
| 1172 | mod->irq_empty = NULL; |
| 1173 | mod->irq_ready = NULL; |
| 1174 | mod->irq_bempsts = 0; |
| 1175 | mod->irq_brdysts = 0; |
| 1176 | usbhs_irq_callback_update(priv, mod); |
| 1177 | |
| 1178 | usbhsg_dcp_disable(dcp); |
| 1179 | |
| 1180 | gpriv->gadget.speed = USB_SPEED_UNKNOWN; |
| 1181 | |
| 1182 | /* disable sys */ |
| 1183 | usbhs_sys_hispeed_ctrl(priv, 0); |
| 1184 | usbhs_sys_function_ctrl(priv, 0); |
| 1185 | usbhs_sys_usb_ctrl(priv, 0); |
| 1186 | |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 1187 | usbhsg_unlock(lock, &flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1188 | /******************** spin unlock ********************/ |
| 1189 | |
| 1190 | if (gpriv->driver && |
| 1191 | gpriv->driver->disconnect) |
| 1192 | gpriv->driver->disconnect(&gpriv->gadget); |
| 1193 | |
| 1194 | dev_dbg(dev, "stop gadget\n"); |
| 1195 | |
| 1196 | return 0; |
| 1197 | |
| 1198 | usbhsg_try_stop_unlock: |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 1199 | usbhsg_unlock(lock, &flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1200 | |
| 1201 | return 0; |
| 1202 | } |
| 1203 | |
| 1204 | /* |
| 1205 | * |
| 1206 | * linux usb function |
| 1207 | * |
| 1208 | */ |
| 1209 | struct usbhsg_gpriv *the_controller; |
| 1210 | int usb_gadget_probe_driver(struct usb_gadget_driver *driver, |
| 1211 | int (*bind)(struct usb_gadget *)) |
| 1212 | { |
| 1213 | struct usbhsg_gpriv *gpriv = the_controller; |
| 1214 | struct usbhs_priv *priv; |
| 1215 | struct device *dev; |
| 1216 | int ret; |
| 1217 | |
| 1218 | if (!bind || |
| 1219 | !driver || |
| 1220 | !driver->setup || |
| 1221 | driver->speed != USB_SPEED_HIGH) |
| 1222 | return -EINVAL; |
| 1223 | if (!gpriv) |
| 1224 | return -ENODEV; |
| 1225 | if (gpriv->driver) |
| 1226 | return -EBUSY; |
| 1227 | |
| 1228 | dev = usbhsg_gpriv_to_dev(gpriv); |
| 1229 | priv = usbhsg_gpriv_to_priv(gpriv); |
| 1230 | |
| 1231 | /* first hook up the driver ... */ |
| 1232 | gpriv->driver = driver; |
| 1233 | gpriv->gadget.dev.driver = &driver->driver; |
| 1234 | |
| 1235 | ret = device_add(&gpriv->gadget.dev); |
| 1236 | if (ret) { |
| 1237 | dev_err(dev, "device_add error %d\n", ret); |
| 1238 | goto add_fail; |
| 1239 | } |
| 1240 | |
| 1241 | ret = bind(&gpriv->gadget); |
| 1242 | if (ret) { |
| 1243 | dev_err(dev, "bind to driver %s error %d\n", |
| 1244 | driver->driver.name, ret); |
| 1245 | goto bind_fail; |
| 1246 | } |
| 1247 | |
| 1248 | dev_dbg(dev, "bind %s\n", driver->driver.name); |
| 1249 | |
| 1250 | return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD); |
| 1251 | |
| 1252 | bind_fail: |
| 1253 | device_del(&gpriv->gadget.dev); |
| 1254 | add_fail: |
| 1255 | gpriv->driver = NULL; |
| 1256 | gpriv->gadget.dev.driver = NULL; |
| 1257 | |
| 1258 | return ret; |
| 1259 | } |
| 1260 | EXPORT_SYMBOL(usb_gadget_probe_driver); |
| 1261 | |
| 1262 | int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) |
| 1263 | { |
| 1264 | struct usbhsg_gpriv *gpriv = the_controller; |
| 1265 | struct usbhs_priv *priv; |
| 1266 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
| 1267 | |
| 1268 | if (!gpriv) |
| 1269 | return -ENODEV; |
| 1270 | |
| 1271 | if (!driver || |
| 1272 | !driver->unbind || |
| 1273 | driver != gpriv->driver) |
| 1274 | return -EINVAL; |
| 1275 | |
| 1276 | dev = usbhsg_gpriv_to_dev(gpriv); |
| 1277 | priv = usbhsg_gpriv_to_priv(gpriv); |
| 1278 | |
| 1279 | usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD); |
| 1280 | device_del(&gpriv->gadget.dev); |
| 1281 | gpriv->driver = NULL; |
| 1282 | |
| 1283 | if (driver->disconnect) |
| 1284 | driver->disconnect(&gpriv->gadget); |
| 1285 | |
| 1286 | driver->unbind(&gpriv->gadget); |
| 1287 | dev_dbg(dev, "unbind %s\n", driver->driver.name); |
| 1288 | |
| 1289 | return 0; |
| 1290 | } |
| 1291 | EXPORT_SYMBOL(usb_gadget_unregister_driver); |
| 1292 | |
| 1293 | /* |
| 1294 | * usb gadget ops |
| 1295 | */ |
| 1296 | static int usbhsg_get_frame(struct usb_gadget *gadget) |
| 1297 | { |
| 1298 | struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); |
| 1299 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
| 1300 | |
| 1301 | return usbhs_frame_get_num(priv); |
| 1302 | } |
| 1303 | |
| 1304 | static struct usb_gadget_ops usbhsg_gadget_ops = { |
| 1305 | .get_frame = usbhsg_get_frame, |
| 1306 | }; |
| 1307 | |
| 1308 | static int usbhsg_start(struct usbhs_priv *priv) |
| 1309 | { |
| 1310 | return usbhsg_try_start(priv, USBHSG_STATUS_STARTED); |
| 1311 | } |
| 1312 | |
| 1313 | static int usbhsg_stop(struct usbhs_priv *priv) |
| 1314 | { |
| 1315 | return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED); |
| 1316 | } |
| 1317 | |
| 1318 | int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv) |
| 1319 | { |
| 1320 | struct usbhsg_gpriv *gpriv; |
| 1321 | struct usbhsg_uep *uep; |
| 1322 | struct device *dev = usbhs_priv_to_dev(priv); |
| 1323 | int pipe_size = usbhs_get_dparam(priv, pipe_size); |
| 1324 | int i; |
| 1325 | |
| 1326 | gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL); |
| 1327 | if (!gpriv) { |
| 1328 | dev_err(dev, "Could not allocate gadget priv\n"); |
| 1329 | return -ENOMEM; |
| 1330 | } |
| 1331 | |
| 1332 | uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL); |
| 1333 | if (!uep) { |
| 1334 | dev_err(dev, "Could not allocate ep\n"); |
| 1335 | goto usbhs_mod_gadget_probe_err_gpriv; |
| 1336 | } |
| 1337 | |
| 1338 | /* |
| 1339 | * CAUTION |
| 1340 | * |
| 1341 | * There is no guarantee that it is possible to access usb module here. |
| 1342 | * Don't accesses to it. |
| 1343 | * The accesse will be enable after "usbhsg_start" |
| 1344 | */ |
| 1345 | |
| 1346 | /* |
| 1347 | * register itself |
| 1348 | */ |
| 1349 | usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET); |
| 1350 | |
| 1351 | /* init gpriv */ |
| 1352 | gpriv->mod.name = "gadget"; |
| 1353 | gpriv->mod.start = usbhsg_start; |
| 1354 | gpriv->mod.stop = usbhsg_stop; |
| 1355 | gpriv->uep = uep; |
| 1356 | gpriv->uep_size = pipe_size; |
| 1357 | usbhsg_status_init(gpriv); |
| 1358 | |
| 1359 | /* |
| 1360 | * init gadget |
| 1361 | */ |
| 1362 | device_initialize(&gpriv->gadget.dev); |
| 1363 | dev_set_name(&gpriv->gadget.dev, "gadget"); |
| 1364 | gpriv->gadget.dev.parent = dev; |
| 1365 | gpriv->gadget.name = "renesas_usbhs_udc"; |
| 1366 | gpriv->gadget.ops = &usbhsg_gadget_ops; |
| 1367 | gpriv->gadget.is_dualspeed = 1; |
| 1368 | |
| 1369 | INIT_LIST_HEAD(&gpriv->gadget.ep_list); |
| 1370 | |
| 1371 | /* |
| 1372 | * init usb_ep |
| 1373 | */ |
| 1374 | usbhsg_for_each_uep_with_dcp(uep, gpriv, i) { |
| 1375 | uep->gpriv = gpriv; |
| 1376 | snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i); |
| 1377 | |
| 1378 | uep->ep.name = uep->ep_name; |
| 1379 | uep->ep.ops = &usbhsg_ep_ops; |
| 1380 | INIT_LIST_HEAD(&uep->ep.ep_list); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1381 | |
| 1382 | /* init DCP */ |
| 1383 | if (usbhsg_is_dcp(uep)) { |
| 1384 | gpriv->gadget.ep0 = &uep->ep; |
| 1385 | uep->ep.maxpacket = 64; |
| 1386 | } |
| 1387 | /* init normal pipe */ |
| 1388 | else { |
| 1389 | uep->ep.maxpacket = 512; |
| 1390 | list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list); |
| 1391 | } |
| 1392 | } |
| 1393 | |
| 1394 | the_controller = gpriv; |
| 1395 | |
| 1396 | dev_info(dev, "gadget probed\n"); |
| 1397 | |
| 1398 | return 0; |
| 1399 | |
| 1400 | usbhs_mod_gadget_probe_err_gpriv: |
| 1401 | kfree(gpriv); |
| 1402 | |
| 1403 | return -ENOMEM; |
| 1404 | } |
| 1405 | |
| 1406 | void __devexit usbhs_mod_gadget_remove(struct usbhs_priv *priv) |
| 1407 | { |
| 1408 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 1409 | |
| 1410 | kfree(gpriv); |
| 1411 | } |