1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * R8A66597 UDC (USB gadget) 4 * 5 * Copyright (C) 2006-2009 Renesas Solutions Corp. 6 * 7 * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> 8 */ 9 10 #include <linux/module.h> 11 #include <linux/interrupt.h> 12 #include <linux/delay.h> 13 #include <linux/io.h> 14 #include <linux/platform_device.h> 15 #include <linux/clk.h> 16 #include <linux/err.h> 17 #include <linux/slab.h> 18 #include <linux/dma-mapping.h> 19 20 #include <linux/usb/ch9.h> 21 #include <linux/usb/gadget.h> 22 23 #include "r8a66597-udc.h" 24 25 #define DRIVER_VERSION "2011-09-26" 26 27 static const char udc_name[] = "r8a66597_udc"; 28 static const char *r8a66597_ep_name[] = { 29 "ep0", "ep1", "ep2", "ep3", "ep4", "ep5", "ep6", "ep7", 30 "ep8", "ep9", 31 }; 32 33 static void init_controller(struct r8a66597 *r8a66597); 34 static void disable_controller(struct r8a66597 *r8a66597); 35 static void irq_ep0_write(struct r8a66597_ep *ep, struct r8a66597_request *req); 36 static void irq_packet_write(struct r8a66597_ep *ep, 37 struct r8a66597_request *req); 38 static int r8a66597_queue(struct usb_ep *_ep, struct usb_request *_req, 39 gfp_t gfp_flags); 40 41 static void transfer_complete(struct r8a66597_ep *ep, 42 struct r8a66597_request *req, int status); 43 44 /*-------------------------------------------------------------------------*/ 45 static inline u16 get_usb_speed(struct r8a66597 *r8a66597) 46 { 47 return r8a66597_read(r8a66597, DVSTCTR0) & RHST; 48 } 49 50 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 51 unsigned long reg) 52 { 53 u16 tmp; 54 55 tmp = r8a66597_read(r8a66597, INTENB0); 56 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, 57 INTENB0); 58 r8a66597_bset(r8a66597, (1 << pipenum), reg); 59 r8a66597_write(r8a66597, tmp, INTENB0); 60 } 61 62 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 63 unsigned long reg) 64 { 65 u16 tmp; 66 67 tmp = r8a66597_read(r8a66597, INTENB0); 68 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, 69 INTENB0); 70 r8a66597_bclr(r8a66597, (1 << pipenum), reg); 71 r8a66597_write(r8a66597, tmp, INTENB0); 72 } 73 74 static void r8a66597_usb_connect(struct r8a66597 *r8a66597) 75 { 76 r8a66597_bset(r8a66597, CTRE, INTENB0); 77 r8a66597_bset(r8a66597, BEMPE | BRDYE, INTENB0); 78 79 r8a66597_bset(r8a66597, DPRPU, SYSCFG0); 80 } 81 82 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597) 83 __releases(r8a66597->lock) 84 __acquires(r8a66597->lock) 85 { 86 r8a66597_bclr(r8a66597, CTRE, INTENB0); 87 r8a66597_bclr(r8a66597, BEMPE | BRDYE, INTENB0); 88 r8a66597_bclr(r8a66597, DPRPU, SYSCFG0); 89 90 r8a66597->gadget.speed = USB_SPEED_UNKNOWN; 91 spin_unlock(&r8a66597->lock); 92 r8a66597->driver->disconnect(&r8a66597->gadget); 93 spin_lock(&r8a66597->lock); 94 95 disable_controller(r8a66597); 96 init_controller(r8a66597); 97 r8a66597_bset(r8a66597, VBSE, INTENB0); 98 INIT_LIST_HEAD(&r8a66597->ep[0].queue); 99 } 100 101 static inline u16 control_reg_get_pid(struct r8a66597 *r8a66597, u16 pipenum) 102 { 103 u16 pid = 0; 104 unsigned long offset; 105 106 if (pipenum == 0) { 107 pid = r8a66597_read(r8a66597, DCPCTR) & PID; 108 } else if (pipenum < R8A66597_MAX_NUM_PIPE) { 109 offset = get_pipectr_addr(pipenum); 110 pid = r8a66597_read(r8a66597, offset) & PID; 111 } else { 112 dev_err(r8a66597_to_dev(r8a66597), "unexpect pipe num (%d)\n", 113 pipenum); 114 } 115 116 return pid; 117 } 118 119 static inline void control_reg_set_pid(struct r8a66597 *r8a66597, u16 pipenum, 120 u16 pid) 121 { 122 unsigned long offset; 123 124 if (pipenum == 0) { 125 r8a66597_mdfy(r8a66597, pid, PID, DCPCTR); 126 } else if (pipenum < R8A66597_MAX_NUM_PIPE) { 127 offset = get_pipectr_addr(pipenum); 128 r8a66597_mdfy(r8a66597, pid, PID, offset); 129 } else { 130 dev_err(r8a66597_to_dev(r8a66597), "unexpect pipe num (%d)\n", 131 pipenum); 132 } 133 } 134 135 static inline void pipe_start(struct r8a66597 *r8a66597, u16 pipenum) 136 { 137 control_reg_set_pid(r8a66597, pipenum, PID_BUF); 138 } 139 140 static inline void pipe_stop(struct r8a66597 *r8a66597, u16 pipenum) 141 { 142 control_reg_set_pid(r8a66597, pipenum, PID_NAK); 143 } 144 145 static inline void pipe_stall(struct r8a66597 *r8a66597, u16 pipenum) 146 { 147 control_reg_set_pid(r8a66597, pipenum, PID_STALL); 148 } 149 150 static inline u16 control_reg_get(struct r8a66597 *r8a66597, u16 pipenum) 151 { 152 u16 ret = 0; 153 unsigned long offset; 154 155 if (pipenum == 0) { 156 ret = r8a66597_read(r8a66597, DCPCTR); 157 } else if (pipenum < R8A66597_MAX_NUM_PIPE) { 158 offset = get_pipectr_addr(pipenum); 159 ret = r8a66597_read(r8a66597, offset); 160 } else { 161 dev_err(r8a66597_to_dev(r8a66597), "unexpect pipe num (%d)\n", 162 pipenum); 163 } 164 165 return ret; 166 } 167 168 static inline void control_reg_sqclr(struct r8a66597 *r8a66597, u16 pipenum) 169 { 170 unsigned long offset; 171 172 pipe_stop(r8a66597, pipenum); 173 174 if (pipenum == 0) { 175 r8a66597_bset(r8a66597, SQCLR, DCPCTR); 176 } else if (pipenum < R8A66597_MAX_NUM_PIPE) { 177 offset = get_pipectr_addr(pipenum); 178 r8a66597_bset(r8a66597, SQCLR, offset); 179 } else { 180 dev_err(r8a66597_to_dev(r8a66597), "unexpect pipe num (%d)\n", 181 pipenum); 182 } 183 } 184 185 static void control_reg_sqset(struct r8a66597 *r8a66597, u16 pipenum) 186 { 187 unsigned long offset; 188 189 pipe_stop(r8a66597, pipenum); 190 191 if (pipenum == 0) { 192 r8a66597_bset(r8a66597, SQSET, DCPCTR); 193 } else if (pipenum < R8A66597_MAX_NUM_PIPE) { 194 offset = get_pipectr_addr(pipenum); 195 r8a66597_bset(r8a66597, SQSET, offset); 196 } else { 197 dev_err(r8a66597_to_dev(r8a66597), 198 "unexpect pipe num(%d)\n", pipenum); 199 } 200 } 201 202 static u16 control_reg_sqmon(struct r8a66597 *r8a66597, u16 pipenum) 203 { 204 unsigned long offset; 205 206 if (pipenum == 0) { 207 return r8a66597_read(r8a66597, DCPCTR) & SQMON; 208 } else if (pipenum < R8A66597_MAX_NUM_PIPE) { 209 offset = get_pipectr_addr(pipenum); 210 return r8a66597_read(r8a66597, offset) & SQMON; 211 } else { 212 dev_err(r8a66597_to_dev(r8a66597), 213 "unexpect pipe num(%d)\n", pipenum); 214 } 215 216 return 0; 217 } 218 219 static u16 save_usb_toggle(struct r8a66597 *r8a66597, u16 pipenum) 220 { 221 return control_reg_sqmon(r8a66597, pipenum); 222 } 223 224 static void restore_usb_toggle(struct r8a66597 *r8a66597, u16 pipenum, 225 u16 toggle) 226 { 227 if (toggle) 228 control_reg_sqset(r8a66597, pipenum); 229 else 230 control_reg_sqclr(r8a66597, pipenum); 231 } 232 233 static inline int get_buffer_size(struct r8a66597 *r8a66597, u16 pipenum) 234 { 235 u16 tmp; 236 int size; 237 238 if (pipenum == 0) { 239 tmp = r8a66597_read(r8a66597, DCPCFG); 240 if ((tmp & R8A66597_CNTMD) != 0) 241 size = 256; 242 else { 243 tmp = r8a66597_read(r8a66597, DCPMAXP); 244 size = tmp & MAXP; 245 } 246 } else { 247 r8a66597_write(r8a66597, pipenum, PIPESEL); 248 tmp = r8a66597_read(r8a66597, PIPECFG); 249 if ((tmp & R8A66597_CNTMD) != 0) { 250 tmp = r8a66597_read(r8a66597, PIPEBUF); 251 size = ((tmp >> 10) + 1) * 64; 252 } else { 253 tmp = r8a66597_read(r8a66597, PIPEMAXP); 254 size = tmp & MXPS; 255 } 256 } 257 258 return size; 259 } 260 261 static inline unsigned short mbw_value(struct r8a66597 *r8a66597) 262 { 263 if (r8a66597->pdata->on_chip) 264 return MBW_32; 265 else 266 return MBW_16; 267 } 268 269 static void r8a66597_change_curpipe(struct r8a66597 *r8a66597, u16 pipenum, 270 u16 isel, u16 fifosel) 271 { 272 u16 tmp, mask, loop; 273 int i = 0; 274 275 if (!pipenum) { 276 mask = ISEL | CURPIPE; 277 loop = isel; 278 } else { 279 mask = CURPIPE; 280 loop = pipenum; 281 } 282 r8a66597_mdfy(r8a66597, loop, mask, fifosel); 283 284 do { 285 tmp = r8a66597_read(r8a66597, fifosel); 286 if (i++ > 1000000) { 287 dev_err(r8a66597_to_dev(r8a66597), 288 "r8a66597: register%x, loop %x " 289 "is timeout\n", fifosel, loop); 290 break; 291 } 292 ndelay(1); 293 } while ((tmp & mask) != loop); 294 } 295 296 static void pipe_change(struct r8a66597 *r8a66597, u16 pipenum) 297 { 298 struct r8a66597_ep *ep = r8a66597->pipenum2ep[pipenum]; 299 300 if (ep->use_dma) 301 r8a66597_bclr(r8a66597, DREQE, ep->fifosel); 302 303 r8a66597_mdfy(r8a66597, pipenum, CURPIPE, ep->fifosel); 304 305 ndelay(450); 306 307 if (r8a66597_is_sudmac(r8a66597) && ep->use_dma) 308 r8a66597_bclr(r8a66597, mbw_value(r8a66597), ep->fifosel); 309 else 310 r8a66597_bset(r8a66597, mbw_value(r8a66597), ep->fifosel); 311 312 if (ep->use_dma) 313 r8a66597_bset(r8a66597, DREQE, ep->fifosel); 314 } 315 316 static int pipe_buffer_setting(struct r8a66597 *r8a66597, 317 struct r8a66597_pipe_info *info) 318 { 319 u16 bufnum = 0, buf_bsize = 0; 320 u16 pipecfg = 0; 321 322 if (info->pipe == 0) 323 return -EINVAL; 324 325 r8a66597_write(r8a66597, info->pipe, PIPESEL); 326 327 if (info->dir_in) 328 pipecfg |= R8A66597_DIR; 329 pipecfg |= info->type; 330 pipecfg |= info->epnum; 331 switch (info->type) { 332 case R8A66597_INT: 333 bufnum = 4 + (info->pipe - R8A66597_BASE_PIPENUM_INT); 334 buf_bsize = 0; 335 break; 336 case R8A66597_BULK: 337 /* isochronous pipes may be used as bulk pipes */ 338 if (info->pipe >= R8A66597_BASE_PIPENUM_BULK) 339 bufnum = info->pipe - R8A66597_BASE_PIPENUM_BULK; 340 else 341 bufnum = info->pipe - R8A66597_BASE_PIPENUM_ISOC; 342 343 bufnum = R8A66597_BASE_BUFNUM + (bufnum * 16); 344 buf_bsize = 7; 345 pipecfg |= R8A66597_DBLB; 346 if (!info->dir_in) 347 pipecfg |= R8A66597_SHTNAK; 348 break; 349 case R8A66597_ISO: 350 bufnum = R8A66597_BASE_BUFNUM + 351 (info->pipe - R8A66597_BASE_PIPENUM_ISOC) * 16; 352 buf_bsize = 7; 353 break; 354 } 355 356 if (buf_bsize && ((bufnum + 16) >= R8A66597_MAX_BUFNUM)) { 357 pr_err("r8a66597 pipe memory is insufficient\n"); 358 return -ENOMEM; 359 } 360 361 r8a66597_write(r8a66597, pipecfg, PIPECFG); 362 r8a66597_write(r8a66597, (buf_bsize << 10) | (bufnum), PIPEBUF); 363 r8a66597_write(r8a66597, info->maxpacket, PIPEMAXP); 364 if (info->interval) 365 info->interval--; 366 r8a66597_write(r8a66597, info->interval, PIPEPERI); 367 368 return 0; 369 } 370 371 static void pipe_buffer_release(struct r8a66597 *r8a66597, 372 struct r8a66597_pipe_info *info) 373 { 374 if (info->pipe == 0) 375 return; 376 377 if (is_bulk_pipe(info->pipe)) { 378 r8a66597->bulk--; 379 } else if (is_interrupt_pipe(info->pipe)) { 380 r8a66597->interrupt--; 381 } else if (is_isoc_pipe(info->pipe)) { 382 r8a66597->isochronous--; 383 if (info->type == R8A66597_BULK) 384 r8a66597->bulk--; 385 } else { 386 dev_err(r8a66597_to_dev(r8a66597), 387 "ep_release: unexpect pipenum (%d)\n", info->pipe); 388 } 389 } 390 391 static void pipe_initialize(struct r8a66597_ep *ep) 392 { 393 struct r8a66597 *r8a66597 = ep->r8a66597; 394 395 r8a66597_mdfy(r8a66597, 0, CURPIPE, ep->fifosel); 396 397 r8a66597_write(r8a66597, ACLRM, ep->pipectr); 398 r8a66597_write(r8a66597, 0, ep->pipectr); 399 r8a66597_write(r8a66597, SQCLR, ep->pipectr); 400 if (ep->use_dma) { 401 r8a66597_mdfy(r8a66597, ep->pipenum, CURPIPE, ep->fifosel); 402 403 ndelay(450); 404 405 r8a66597_bset(r8a66597, mbw_value(r8a66597), ep->fifosel); 406 } 407 } 408 409 static void r8a66597_ep_setting(struct r8a66597 *r8a66597, 410 struct r8a66597_ep *ep, 411 const struct usb_endpoint_descriptor *desc, 412 u16 pipenum, int dma) 413 { 414 ep->use_dma = 0; 415 ep->fifoaddr = CFIFO; 416 ep->fifosel = CFIFOSEL; 417 ep->fifoctr = CFIFOCTR; 418 419 ep->pipectr = get_pipectr_addr(pipenum); 420 if (is_bulk_pipe(pipenum) || is_isoc_pipe(pipenum)) { 421 ep->pipetre = get_pipetre_addr(pipenum); 422 ep->pipetrn = get_pipetrn_addr(pipenum); 423 } else { 424 ep->pipetre = 0; 425 ep->pipetrn = 0; 426 } 427 ep->pipenum = pipenum; 428 ep->ep.maxpacket = usb_endpoint_maxp(desc); 429 r8a66597->pipenum2ep[pipenum] = ep; 430 r8a66597->epaddr2ep[usb_endpoint_num(desc)] 431 = ep; 432 INIT_LIST_HEAD(&ep->queue); 433 } 434 435 static void r8a66597_ep_release(struct r8a66597_ep *ep) 436 { 437 struct r8a66597 *r8a66597 = ep->r8a66597; 438 u16 pipenum = ep->pipenum; 439 440 if (pipenum == 0) 441 return; 442 443 if (ep->use_dma) 444 r8a66597->num_dma--; 445 ep->pipenum = 0; 446 ep->busy = 0; 447 ep->use_dma = 0; 448 } 449 450 static int alloc_pipe_config(struct r8a66597_ep *ep, 451 const struct usb_endpoint_descriptor *desc) 452 { 453 struct r8a66597 *r8a66597 = ep->r8a66597; 454 struct r8a66597_pipe_info info; 455 int dma = 0; 456 unsigned char *counter; 457 int ret; 458 459 ep->ep.desc = desc; 460 461 if (ep->pipenum) /* already allocated pipe */ 462 return 0; 463 464 switch (usb_endpoint_type(desc)) { 465 case USB_ENDPOINT_XFER_BULK: 466 if (r8a66597->bulk >= R8A66597_MAX_NUM_BULK) { 467 if (r8a66597->isochronous >= R8A66597_MAX_NUM_ISOC) { 468 dev_err(r8a66597_to_dev(r8a66597), 469 "bulk pipe is insufficient\n"); 470 return -ENODEV; 471 } else { 472 info.pipe = R8A66597_BASE_PIPENUM_ISOC 473 + r8a66597->isochronous; 474 counter = &r8a66597->isochronous; 475 } 476 } else { 477 info.pipe = R8A66597_BASE_PIPENUM_BULK + r8a66597->bulk; 478 counter = &r8a66597->bulk; 479 } 480 info.type = R8A66597_BULK; 481 dma = 1; 482 break; 483 case USB_ENDPOINT_XFER_INT: 484 if (r8a66597->interrupt >= R8A66597_MAX_NUM_INT) { 485 dev_err(r8a66597_to_dev(r8a66597), 486 "interrupt pipe is insufficient\n"); 487 return -ENODEV; 488 } 489 info.pipe = R8A66597_BASE_PIPENUM_INT + r8a66597->interrupt; 490 info.type = R8A66597_INT; 491 counter = &r8a66597->interrupt; 492 break; 493 case USB_ENDPOINT_XFER_ISOC: 494 if (r8a66597->isochronous >= R8A66597_MAX_NUM_ISOC) { 495 dev_err(r8a66597_to_dev(r8a66597), 496 "isochronous pipe is insufficient\n"); 497 return -ENODEV; 498 } 499 info.pipe = R8A66597_BASE_PIPENUM_ISOC + r8a66597->isochronous; 500 info.type = R8A66597_ISO; 501 counter = &r8a66597->isochronous; 502 break; 503 default: 504 dev_err(r8a66597_to_dev(r8a66597), "unexpect xfer type\n"); 505 return -EINVAL; 506 } 507 ep->type = info.type; 508 509 info.epnum = usb_endpoint_num(desc); 510 info.maxpacket = usb_endpoint_maxp(desc); 511 info.interval = desc->bInterval; 512 if (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) 513 info.dir_in = 1; 514 else 515 info.dir_in = 0; 516 517 ret = pipe_buffer_setting(r8a66597, &info); 518 if (ret < 0) { 519 dev_err(r8a66597_to_dev(r8a66597), 520 "pipe_buffer_setting fail\n"); 521 return ret; 522 } 523 524 (*counter)++; 525 if ((counter == &r8a66597->isochronous) && info.type == R8A66597_BULK) 526 r8a66597->bulk++; 527 528 r8a66597_ep_setting(r8a66597, ep, desc, info.pipe, dma); 529 pipe_initialize(ep); 530 531 return 0; 532 } 533 534 static int free_pipe_config(struct r8a66597_ep *ep) 535 { 536 struct r8a66597 *r8a66597 = ep->r8a66597; 537 struct r8a66597_pipe_info info; 538 539 info.pipe = ep->pipenum; 540 info.type = ep->type; 541 pipe_buffer_release(r8a66597, &info); 542 r8a66597_ep_release(ep); 543 544 return 0; 545 } 546 547 /*-------------------------------------------------------------------------*/ 548 static void pipe_irq_enable(struct r8a66597 *r8a66597, u16 pipenum) 549 { 550 enable_irq_ready(r8a66597, pipenum); 551 enable_irq_nrdy(r8a66597, pipenum); 552 } 553 554 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum) 555 { 556 disable_irq_ready(r8a66597, pipenum); 557 disable_irq_nrdy(r8a66597, pipenum); 558 } 559 560 /* if complete is true, gadget driver complete function is not call */ 561 static void control_end(struct r8a66597 *r8a66597, unsigned ccpl) 562 { 563 r8a66597->ep[0].internal_ccpl = ccpl; 564 pipe_start(r8a66597, 0); 565 r8a66597_bset(r8a66597, CCPL, DCPCTR); 566 } 567 568 static void start_ep0_write(struct r8a66597_ep *ep, 569 struct r8a66597_request *req) 570 { 571 struct r8a66597 *r8a66597 = ep->r8a66597; 572 573 pipe_change(r8a66597, ep->pipenum); 574 r8a66597_mdfy(r8a66597, ISEL, (ISEL | CURPIPE), CFIFOSEL); 575 r8a66597_write(r8a66597, BCLR, ep->fifoctr); 576 if (req->req.length == 0) { 577 r8a66597_bset(r8a66597, BVAL, ep->fifoctr); 578 pipe_start(r8a66597, 0); 579 transfer_complete(ep, req, 0); 580 } else { 581 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); 582 irq_ep0_write(ep, req); 583 } 584 } 585 586 static void disable_fifosel(struct r8a66597 *r8a66597, u16 pipenum, 587 u16 fifosel) 588 { 589 u16 tmp; 590 591 tmp = r8a66597_read(r8a66597, fifosel) & CURPIPE; 592 if (tmp == pipenum) 593 r8a66597_change_curpipe(r8a66597, 0, 0, fifosel); 594 } 595 596 static void change_bfre_mode(struct r8a66597 *r8a66597, u16 pipenum, 597 int enable) 598 { 599 struct r8a66597_ep *ep = r8a66597->pipenum2ep[pipenum]; 600 u16 tmp, toggle; 601 602 /* check current BFRE bit */ 603 r8a66597_write(r8a66597, pipenum, PIPESEL); 604 tmp = r8a66597_read(r8a66597, PIPECFG) & R8A66597_BFRE; 605 if ((enable && tmp) || (!enable && !tmp)) 606 return; 607 608 /* change BFRE bit */ 609 pipe_stop(r8a66597, pipenum); 610 disable_fifosel(r8a66597, pipenum, CFIFOSEL); 611 disable_fifosel(r8a66597, pipenum, D0FIFOSEL); 612 disable_fifosel(r8a66597, pipenum, D1FIFOSEL); 613 614 toggle = save_usb_toggle(r8a66597, pipenum); 615 616 r8a66597_write(r8a66597, pipenum, PIPESEL); 617 if (enable) 618 r8a66597_bset(r8a66597, R8A66597_BFRE, PIPECFG); 619 else 620 r8a66597_bclr(r8a66597, R8A66597_BFRE, PIPECFG); 621 622 /* initialize for internal BFRE flag */ 623 r8a66597_bset(r8a66597, ACLRM, ep->pipectr); 624 r8a66597_bclr(r8a66597, ACLRM, ep->pipectr); 625 626 restore_usb_toggle(r8a66597, pipenum, toggle); 627 } 628 629 static int sudmac_alloc_channel(struct r8a66597 *r8a66597, 630 struct r8a66597_ep *ep, 631 struct r8a66597_request *req) 632 { 633 struct r8a66597_dma *dma; 634 635 if (!r8a66597_is_sudmac(r8a66597)) 636 return -ENODEV; 637 638 /* Check transfer type */ 639 if (!is_bulk_pipe(ep->pipenum)) 640 return -EIO; 641 642 if (r8a66597->dma.used) 643 return -EBUSY; 644 645 /* set SUDMAC parameters */ 646 dma = &r8a66597->dma; 647 dma->used = 1; 648 if (ep->ep.desc->bEndpointAddress & USB_DIR_IN) { 649 dma->dir = 1; 650 } else { 651 dma->dir = 0; 652 change_bfre_mode(r8a66597, ep->pipenum, 1); 653 } 654 655 /* set r8a66597_ep paramters */ 656 ep->use_dma = 1; 657 ep->dma = dma; 658 ep->fifoaddr = D0FIFO; 659 ep->fifosel = D0FIFOSEL; 660 ep->fifoctr = D0FIFOCTR; 661 662 /* dma mapping */ 663 return usb_gadget_map_request(&r8a66597->gadget, &req->req, dma->dir); 664 } 665 666 static void sudmac_free_channel(struct r8a66597 *r8a66597, 667 struct r8a66597_ep *ep, 668 struct r8a66597_request *req) 669 { 670 if (!r8a66597_is_sudmac(r8a66597)) 671 return; 672 673 usb_gadget_unmap_request(&r8a66597->gadget, &req->req, ep->dma->dir); 674 675 r8a66597_bclr(r8a66597, DREQE, ep->fifosel); 676 r8a66597_change_curpipe(r8a66597, 0, 0, ep->fifosel); 677 678 ep->dma->used = 0; 679 ep->use_dma = 0; 680 ep->fifoaddr = CFIFO; 681 ep->fifosel = CFIFOSEL; 682 ep->fifoctr = CFIFOCTR; 683 } 684 685 static void sudmac_start(struct r8a66597 *r8a66597, struct r8a66597_ep *ep, 686 struct r8a66597_request *req) 687 { 688 BUG_ON(req->req.length == 0); 689 690 r8a66597_sudmac_write(r8a66597, LBA_WAIT, CH0CFG); 691 r8a66597_sudmac_write(r8a66597, req->req.dma, CH0BA); 692 r8a66597_sudmac_write(r8a66597, req->req.length, CH0BBC); 693 r8a66597_sudmac_write(r8a66597, CH0ENDE, DINTCTRL); 694 695 r8a66597_sudmac_write(r8a66597, DEN, CH0DEN); 696 } 697 698 static void start_packet_write(struct r8a66597_ep *ep, 699 struct r8a66597_request *req) 700 { 701 struct r8a66597 *r8a66597 = ep->r8a66597; 702 u16 tmp; 703 704 pipe_change(r8a66597, ep->pipenum); 705 disable_irq_empty(r8a66597, ep->pipenum); 706 pipe_start(r8a66597, ep->pipenum); 707 708 if (req->req.length == 0) { 709 transfer_complete(ep, req, 0); 710 } else { 711 r8a66597_write(r8a66597, ~(1 << ep->pipenum), BRDYSTS); 712 if (sudmac_alloc_channel(r8a66597, ep, req) < 0) { 713 /* PIO mode */ 714 pipe_change(r8a66597, ep->pipenum); 715 disable_irq_empty(r8a66597, ep->pipenum); 716 pipe_start(r8a66597, ep->pipenum); 717 tmp = r8a66597_read(r8a66597, ep->fifoctr); 718 if (unlikely((tmp & FRDY) == 0)) 719 pipe_irq_enable(r8a66597, ep->pipenum); 720 else 721 irq_packet_write(ep, req); 722 } else { 723 /* DMA mode */ 724 pipe_change(r8a66597, ep->pipenum); 725 disable_irq_nrdy(r8a66597, ep->pipenum); 726 pipe_start(r8a66597, ep->pipenum); 727 enable_irq_nrdy(r8a66597, ep->pipenum); 728 sudmac_start(r8a66597, ep, req); 729 } 730 } 731 } 732 733 static void start_packet_read(struct r8a66597_ep *ep, 734 struct r8a66597_request *req) 735 { 736 struct r8a66597 *r8a66597 = ep->r8a66597; 737 u16 pipenum = ep->pipenum; 738 739 if (ep->pipenum == 0) { 740 r8a66597_mdfy(r8a66597, 0, (ISEL | CURPIPE), CFIFOSEL); 741 r8a66597_write(r8a66597, BCLR, ep->fifoctr); 742 pipe_start(r8a66597, pipenum); 743 pipe_irq_enable(r8a66597, pipenum); 744 } else { 745 pipe_stop(r8a66597, pipenum); 746 if (ep->pipetre) { 747 enable_irq_nrdy(r8a66597, pipenum); 748 r8a66597_write(r8a66597, TRCLR, ep->pipetre); 749 r8a66597_write(r8a66597, 750 DIV_ROUND_UP(req->req.length, ep->ep.maxpacket), 751 ep->pipetrn); 752 r8a66597_bset(r8a66597, TRENB, ep->pipetre); 753 } 754 755 if (sudmac_alloc_channel(r8a66597, ep, req) < 0) { 756 /* PIO mode */ 757 change_bfre_mode(r8a66597, ep->pipenum, 0); 758 pipe_start(r8a66597, pipenum); /* trigger once */ 759 pipe_irq_enable(r8a66597, pipenum); 760 } else { 761 pipe_change(r8a66597, pipenum); 762 sudmac_start(r8a66597, ep, req); 763 pipe_start(r8a66597, pipenum); /* trigger once */ 764 } 765 } 766 } 767 768 static void start_packet(struct r8a66597_ep *ep, struct r8a66597_request *req) 769 { 770 if (ep->ep.desc->bEndpointAddress & USB_DIR_IN) 771 start_packet_write(ep, req); 772 else 773 start_packet_read(ep, req); 774 } 775 776 static void start_ep0(struct r8a66597_ep *ep, struct r8a66597_request *req) 777 { 778 u16 ctsq; 779 780 ctsq = r8a66597_read(ep->r8a66597, INTSTS0) & CTSQ; 781 782 switch (ctsq) { 783 case CS_RDDS: 784 start_ep0_write(ep, req); 785 break; 786 case CS_WRDS: 787 start_packet_read(ep, req); 788 break; 789 790 case CS_WRND: 791 control_end(ep->r8a66597, 0); 792 break; 793 default: 794 dev_err(r8a66597_to_dev(ep->r8a66597), 795 "start_ep0: unexpect ctsq(%x)\n", ctsq); 796 break; 797 } 798 } 799 800 static void init_controller(struct r8a66597 *r8a66597) 801 { 802 u16 vif = r8a66597->pdata->vif ? LDRV : 0; 803 u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0; 804 u16 endian = r8a66597->pdata->endian ? BIGEND : 0; 805 806 if (r8a66597->pdata->on_chip) { 807 if (r8a66597->pdata->buswait) 808 r8a66597_write(r8a66597, r8a66597->pdata->buswait, 809 SYSCFG1); 810 else 811 r8a66597_write(r8a66597, 0x0f, SYSCFG1); 812 r8a66597_bset(r8a66597, HSE, SYSCFG0); 813 814 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 815 r8a66597_bclr(r8a66597, DPRPU, SYSCFG0); 816 r8a66597_bset(r8a66597, USBE, SYSCFG0); 817 818 r8a66597_bset(r8a66597, SCKE, SYSCFG0); 819 820 r8a66597_bset(r8a66597, irq_sense, INTENB1); 821 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, 822 DMA0CFG); 823 } else { 824 r8a66597_bset(r8a66597, vif | endian, PINCFG); 825 r8a66597_bset(r8a66597, HSE, SYSCFG0); /* High spd */ 826 r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata), 827 XTAL, SYSCFG0); 828 829 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 830 r8a66597_bclr(r8a66597, DPRPU, SYSCFG0); 831 r8a66597_bset(r8a66597, USBE, SYSCFG0); 832 833 r8a66597_bset(r8a66597, XCKE, SYSCFG0); 834 835 msleep(3); 836 837 r8a66597_bset(r8a66597, PLLC, SYSCFG0); 838 839 msleep(1); 840 841 r8a66597_bset(r8a66597, SCKE, SYSCFG0); 842 843 r8a66597_bset(r8a66597, irq_sense, INTENB1); 844 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, 845 DMA0CFG); 846 } 847 } 848 849 static void disable_controller(struct r8a66597 *r8a66597) 850 { 851 if (r8a66597->pdata->on_chip) { 852 r8a66597_bset(r8a66597, SCKE, SYSCFG0); 853 r8a66597_bclr(r8a66597, UTST, TESTMODE); 854 855 /* disable interrupts */ 856 r8a66597_write(r8a66597, 0, INTENB0); 857 r8a66597_write(r8a66597, 0, INTENB1); 858 r8a66597_write(r8a66597, 0, BRDYENB); 859 r8a66597_write(r8a66597, 0, BEMPENB); 860 r8a66597_write(r8a66597, 0, NRDYENB); 861 862 /* clear status */ 863 r8a66597_write(r8a66597, 0, BRDYSTS); 864 r8a66597_write(r8a66597, 0, NRDYSTS); 865 r8a66597_write(r8a66597, 0, BEMPSTS); 866 867 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 868 r8a66597_bclr(r8a66597, SCKE, SYSCFG0); 869 870 } else { 871 r8a66597_bclr(r8a66597, UTST, TESTMODE); 872 r8a66597_bclr(r8a66597, SCKE, SYSCFG0); 873 udelay(1); 874 r8a66597_bclr(r8a66597, PLLC, SYSCFG0); 875 udelay(1); 876 udelay(1); 877 r8a66597_bclr(r8a66597, XCKE, SYSCFG0); 878 } 879 } 880 881 static void r8a66597_start_xclock(struct r8a66597 *r8a66597) 882 { 883 u16 tmp; 884 885 if (!r8a66597->pdata->on_chip) { 886 tmp = r8a66597_read(r8a66597, SYSCFG0); 887 if (!(tmp & XCKE)) 888 r8a66597_bset(r8a66597, XCKE, SYSCFG0); 889 } 890 } 891 892 static struct r8a66597_request *get_request_from_ep(struct r8a66597_ep *ep) 893 { 894 return list_entry(ep->queue.next, struct r8a66597_request, queue); 895 } 896 897 /*-------------------------------------------------------------------------*/ 898 static void transfer_complete(struct r8a66597_ep *ep, 899 struct r8a66597_request *req, int status) 900 __releases(r8a66597->lock) 901 __acquires(r8a66597->lock) 902 { 903 int restart = 0; 904 905 if (unlikely(ep->pipenum == 0)) { 906 if (ep->internal_ccpl) { 907 ep->internal_ccpl = 0; 908 return; 909 } 910 } 911 912 list_del_init(&req->queue); 913 if (ep->r8a66597->gadget.speed == USB_SPEED_UNKNOWN) 914 req->req.status = -ESHUTDOWN; 915 else 916 req->req.status = status; 917 918 if (!list_empty(&ep->queue)) 919 restart = 1; 920 921 if (ep->use_dma) 922 sudmac_free_channel(ep->r8a66597, ep, req); 923 924 spin_unlock(&ep->r8a66597->lock); 925 usb_gadget_giveback_request(&ep->ep, &req->req); 926 spin_lock(&ep->r8a66597->lock); 927 928 if (restart) { 929 req = get_request_from_ep(ep); 930 if (ep->ep.desc) 931 start_packet(ep, req); 932 } 933 } 934 935 static void irq_ep0_write(struct r8a66597_ep *ep, struct r8a66597_request *req) 936 { 937 int i; 938 u16 tmp; 939 unsigned bufsize; 940 size_t size; 941 void *buf; 942 u16 pipenum = ep->pipenum; 943 struct r8a66597 *r8a66597 = ep->r8a66597; 944 945 pipe_change(r8a66597, pipenum); 946 r8a66597_bset(r8a66597, ISEL, ep->fifosel); 947 948 i = 0; 949 do { 950 tmp = r8a66597_read(r8a66597, ep->fifoctr); 951 if (i++ > 100000) { 952 dev_err(r8a66597_to_dev(r8a66597), 953 "pipe0 is busy. maybe cpu i/o bus " 954 "conflict. please power off this controller."); 955 return; 956 } 957 ndelay(1); 958 } while ((tmp & FRDY) == 0); 959 960 /* prepare parameters */ 961 bufsize = get_buffer_size(r8a66597, pipenum); 962 buf = req->req.buf + req->req.actual; 963 size = min(bufsize, req->req.length - req->req.actual); 964 965 /* write fifo */ 966 if (req->req.buf) { 967 if (size > 0) 968 r8a66597_write_fifo(r8a66597, ep, buf, size); 969 if ((size == 0) || ((size % ep->ep.maxpacket) != 0)) 970 r8a66597_bset(r8a66597, BVAL, ep->fifoctr); 971 } 972 973 /* update parameters */ 974 req->req.actual += size; 975 976 /* check transfer finish */ 977 if ((!req->req.zero && (req->req.actual == req->req.length)) 978 || (size % ep->ep.maxpacket) 979 || (size == 0)) { 980 disable_irq_ready(r8a66597, pipenum); 981 disable_irq_empty(r8a66597, pipenum); 982 } else { 983 disable_irq_ready(r8a66597, pipenum); 984 enable_irq_empty(r8a66597, pipenum); 985 } 986 pipe_start(r8a66597, pipenum); 987 } 988 989 static void irq_packet_write(struct r8a66597_ep *ep, 990 struct r8a66597_request *req) 991 { 992 u16 tmp; 993 unsigned bufsize; 994 size_t size; 995 void *buf; 996 u16 pipenum = ep->pipenum; 997 struct r8a66597 *r8a66597 = ep->r8a66597; 998 999 pipe_change(r8a66597, pipenum); 1000 tmp = r8a66597_read(r8a66597, ep->fifoctr); 1001 if (unlikely((tmp & FRDY) == 0)) { 1002 pipe_stop(r8a66597, pipenum); 1003 pipe_irq_disable(r8a66597, pipenum); 1004 dev_err(r8a66597_to_dev(r8a66597), 1005 "write fifo not ready. pipnum=%d\n", pipenum); 1006 return; 1007 } 1008 1009 /* prepare parameters */ 1010 bufsize = get_buffer_size(r8a66597, pipenum); 1011 buf = req->req.buf + req->req.actual; 1012 size = min(bufsize, req->req.length - req->req.actual); 1013 1014 /* write fifo */ 1015 if (req->req.buf) { 1016 r8a66597_write_fifo(r8a66597, ep, buf, size); 1017 if ((size == 0) 1018 || ((size % ep->ep.maxpacket) != 0) 1019 || ((bufsize != ep->ep.maxpacket) 1020 && (bufsize > size))) 1021 r8a66597_bset(r8a66597, BVAL, ep->fifoctr); 1022 } 1023 1024 /* update parameters */ 1025 req->req.actual += size; 1026 /* check transfer finish */ 1027 if ((!req->req.zero && (req->req.actual == req->req.length)) 1028 || (size % ep->ep.maxpacket) 1029 || (size == 0)) { 1030 disable_irq_ready(r8a66597, pipenum); 1031 enable_irq_empty(r8a66597, pipenum); 1032 } else { 1033 disable_irq_empty(r8a66597, pipenum); 1034 pipe_irq_enable(r8a66597, pipenum); 1035 } 1036 } 1037 1038 static void irq_packet_read(struct r8a66597_ep *ep, 1039 struct r8a66597_request *req) 1040 { 1041 u16 tmp; 1042 int rcv_len, bufsize, req_len; 1043 int size; 1044 void *buf; 1045 u16 pipenum = ep->pipenum; 1046 struct r8a66597 *r8a66597 = ep->r8a66597; 1047 int finish = 0; 1048 1049 pipe_change(r8a66597, pipenum); 1050 tmp = r8a66597_read(r8a66597, ep->fifoctr); 1051 if (unlikely((tmp & FRDY) == 0)) { 1052 req->req.status = -EPIPE; 1053 pipe_stop(r8a66597, pipenum); 1054 pipe_irq_disable(r8a66597, pipenum); 1055 dev_err(r8a66597_to_dev(r8a66597), "read fifo not ready"); 1056 return; 1057 } 1058 1059 /* prepare parameters */ 1060 rcv_len = tmp & DTLN; 1061 bufsize = get_buffer_size(r8a66597, pipenum); 1062 1063 buf = req->req.buf + req->req.actual; 1064 req_len = req->req.length - req->req.actual; 1065 if (rcv_len < bufsize) 1066 size = min(rcv_len, req_len); 1067 else 1068 size = min(bufsize, req_len); 1069 1070 /* update parameters */ 1071 req->req.actual += size; 1072 1073 /* check transfer finish */ 1074 if ((!req->req.zero && (req->req.actual == req->req.length)) 1075 || (size % ep->ep.maxpacket) 1076 || (size == 0)) { 1077 pipe_stop(r8a66597, pipenum); 1078 pipe_irq_disable(r8a66597, pipenum); 1079 finish = 1; 1080 } 1081 1082 /* read fifo */ 1083 if (req->req.buf) { 1084 if (size == 0) 1085 r8a66597_write(r8a66597, BCLR, ep->fifoctr); 1086 else 1087 r8a66597_read_fifo(r8a66597, ep->fifoaddr, buf, size); 1088 1089 } 1090 1091 if ((ep->pipenum != 0) && finish) 1092 transfer_complete(ep, req, 0); 1093 } 1094 1095 static void irq_pipe_ready(struct r8a66597 *r8a66597, u16 status, u16 enb) 1096 { 1097 u16 check; 1098 u16 pipenum; 1099 struct r8a66597_ep *ep; 1100 struct r8a66597_request *req; 1101 1102 if ((status & BRDY0) && (enb & BRDY0)) { 1103 r8a66597_write(r8a66597, ~BRDY0, BRDYSTS); 1104 r8a66597_mdfy(r8a66597, 0, CURPIPE, CFIFOSEL); 1105 1106 ep = &r8a66597->ep[0]; 1107 req = get_request_from_ep(ep); 1108 irq_packet_read(ep, req); 1109 } else { 1110 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1111 check = 1 << pipenum; 1112 if ((status & check) && (enb & check)) { 1113 r8a66597_write(r8a66597, ~check, BRDYSTS); 1114 ep = r8a66597->pipenum2ep[pipenum]; 1115 req = get_request_from_ep(ep); 1116 if (ep->ep.desc->bEndpointAddress & USB_DIR_IN) 1117 irq_packet_write(ep, req); 1118 else 1119 irq_packet_read(ep, req); 1120 } 1121 } 1122 } 1123 } 1124 1125 static void irq_pipe_empty(struct r8a66597 *r8a66597, u16 status, u16 enb) 1126 { 1127 u16 tmp; 1128 u16 check; 1129 u16 pipenum; 1130 struct r8a66597_ep *ep; 1131 struct r8a66597_request *req; 1132 1133 if ((status & BEMP0) && (enb & BEMP0)) { 1134 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); 1135 1136 ep = &r8a66597->ep[0]; 1137 req = get_request_from_ep(ep); 1138 irq_ep0_write(ep, req); 1139 } else { 1140 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1141 check = 1 << pipenum; 1142 if ((status & check) && (enb & check)) { 1143 r8a66597_write(r8a66597, ~check, BEMPSTS); 1144 tmp = control_reg_get(r8a66597, pipenum); 1145 if ((tmp & INBUFM) == 0) { 1146 disable_irq_empty(r8a66597, pipenum); 1147 pipe_irq_disable(r8a66597, pipenum); 1148 pipe_stop(r8a66597, pipenum); 1149 ep = r8a66597->pipenum2ep[pipenum]; 1150 req = get_request_from_ep(ep); 1151 if (!list_empty(&ep->queue)) 1152 transfer_complete(ep, req, 0); 1153 } 1154 } 1155 } 1156 } 1157 } 1158 1159 static void get_status(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl) 1160 __releases(r8a66597->lock) 1161 __acquires(r8a66597->lock) 1162 { 1163 struct r8a66597_ep *ep; 1164 u16 pid; 1165 u16 status = 0; 1166 u16 w_index = le16_to_cpu(ctrl->wIndex); 1167 1168 switch (ctrl->bRequestType & USB_RECIP_MASK) { 1169 case USB_RECIP_DEVICE: 1170 status = r8a66597->device_status; 1171 break; 1172 case USB_RECIP_INTERFACE: 1173 status = 0; 1174 break; 1175 case USB_RECIP_ENDPOINT: 1176 ep = r8a66597->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK]; 1177 pid = control_reg_get_pid(r8a66597, ep->pipenum); 1178 if (pid == PID_STALL) 1179 status = 1 << USB_ENDPOINT_HALT; 1180 else 1181 status = 0; 1182 break; 1183 default: 1184 pipe_stall(r8a66597, 0); 1185 return; /* exit */ 1186 } 1187 1188 r8a66597->ep0_data = cpu_to_le16(status); 1189 r8a66597->ep0_req->buf = &r8a66597->ep0_data; 1190 r8a66597->ep0_req->length = 2; 1191 /* AV: what happens if we get called again before that gets through? */ 1192 spin_unlock(&r8a66597->lock); 1193 r8a66597_queue(r8a66597->gadget.ep0, r8a66597->ep0_req, GFP_KERNEL); 1194 spin_lock(&r8a66597->lock); 1195 } 1196 1197 static void clear_feature(struct r8a66597 *r8a66597, 1198 struct usb_ctrlrequest *ctrl) 1199 { 1200 switch (ctrl->bRequestType & USB_RECIP_MASK) { 1201 case USB_RECIP_DEVICE: 1202 control_end(r8a66597, 1); 1203 break; 1204 case USB_RECIP_INTERFACE: 1205 control_end(r8a66597, 1); 1206 break; 1207 case USB_RECIP_ENDPOINT: { 1208 struct r8a66597_ep *ep; 1209 struct r8a66597_request *req; 1210 u16 w_index = le16_to_cpu(ctrl->wIndex); 1211 1212 ep = r8a66597->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK]; 1213 if (!ep->wedge) { 1214 pipe_stop(r8a66597, ep->pipenum); 1215 control_reg_sqclr(r8a66597, ep->pipenum); 1216 spin_unlock(&r8a66597->lock); 1217 usb_ep_clear_halt(&ep->ep); 1218 spin_lock(&r8a66597->lock); 1219 } 1220 1221 control_end(r8a66597, 1); 1222 1223 req = get_request_from_ep(ep); 1224 if (ep->busy) { 1225 ep->busy = 0; 1226 if (list_empty(&ep->queue)) 1227 break; 1228 start_packet(ep, req); 1229 } else if (!list_empty(&ep->queue)) 1230 pipe_start(r8a66597, ep->pipenum); 1231 } 1232 break; 1233 default: 1234 pipe_stall(r8a66597, 0); 1235 break; 1236 } 1237 } 1238 1239 static void set_feature(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl) 1240 { 1241 u16 tmp; 1242 int timeout = 3000; 1243 1244 switch (ctrl->bRequestType & USB_RECIP_MASK) { 1245 case USB_RECIP_DEVICE: 1246 switch (le16_to_cpu(ctrl->wValue)) { 1247 case USB_DEVICE_TEST_MODE: 1248 control_end(r8a66597, 1); 1249 /* Wait for the completion of status stage */ 1250 do { 1251 tmp = r8a66597_read(r8a66597, INTSTS0) & CTSQ; 1252 udelay(1); 1253 } while (tmp != CS_IDST || timeout-- > 0); 1254 1255 if (tmp == CS_IDST) 1256 r8a66597_bset(r8a66597, 1257 le16_to_cpu(ctrl->wIndex >> 8), 1258 TESTMODE); 1259 break; 1260 default: 1261 pipe_stall(r8a66597, 0); 1262 break; 1263 } 1264 break; 1265 case USB_RECIP_INTERFACE: 1266 control_end(r8a66597, 1); 1267 break; 1268 case USB_RECIP_ENDPOINT: { 1269 struct r8a66597_ep *ep; 1270 u16 w_index = le16_to_cpu(ctrl->wIndex); 1271 1272 ep = r8a66597->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK]; 1273 pipe_stall(r8a66597, ep->pipenum); 1274 1275 control_end(r8a66597, 1); 1276 } 1277 break; 1278 default: 1279 pipe_stall(r8a66597, 0); 1280 break; 1281 } 1282 } 1283 1284 /* if return value is true, call class driver's setup() */ 1285 static int setup_packet(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl) 1286 { 1287 u16 *p = (u16 *)ctrl; 1288 unsigned long offset = USBREQ; 1289 int i, ret = 0; 1290 1291 /* read fifo */ 1292 r8a66597_write(r8a66597, ~VALID, INTSTS0); 1293 1294 for (i = 0; i < 4; i++) 1295 p[i] = r8a66597_read(r8a66597, offset + i*2); 1296 1297 /* check request */ 1298 if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { 1299 switch (ctrl->bRequest) { 1300 case USB_REQ_GET_STATUS: 1301 get_status(r8a66597, ctrl); 1302 break; 1303 case USB_REQ_CLEAR_FEATURE: 1304 clear_feature(r8a66597, ctrl); 1305 break; 1306 case USB_REQ_SET_FEATURE: 1307 set_feature(r8a66597, ctrl); 1308 break; 1309 default: 1310 ret = 1; 1311 break; 1312 } 1313 } else 1314 ret = 1; 1315 return ret; 1316 } 1317 1318 static void r8a66597_update_usb_speed(struct r8a66597 *r8a66597) 1319 { 1320 u16 speed = get_usb_speed(r8a66597); 1321 1322 switch (speed) { 1323 case HSMODE: 1324 r8a66597->gadget.speed = USB_SPEED_HIGH; 1325 break; 1326 case FSMODE: 1327 r8a66597->gadget.speed = USB_SPEED_FULL; 1328 break; 1329 default: 1330 r8a66597->gadget.speed = USB_SPEED_UNKNOWN; 1331 dev_err(r8a66597_to_dev(r8a66597), "USB speed unknown\n"); 1332 } 1333 } 1334 1335 static void irq_device_state(struct r8a66597 *r8a66597) 1336 { 1337 u16 dvsq; 1338 1339 dvsq = r8a66597_read(r8a66597, INTSTS0) & DVSQ; 1340 r8a66597_write(r8a66597, ~DVST, INTSTS0); 1341 1342 if (dvsq == DS_DFLT) { 1343 /* bus reset */ 1344 spin_unlock(&r8a66597->lock); 1345 usb_gadget_udc_reset(&r8a66597->gadget, r8a66597->driver); 1346 spin_lock(&r8a66597->lock); 1347 r8a66597_update_usb_speed(r8a66597); 1348 } 1349 if (r8a66597->old_dvsq == DS_CNFG && dvsq != DS_CNFG) 1350 r8a66597_update_usb_speed(r8a66597); 1351 if ((dvsq == DS_CNFG || dvsq == DS_ADDS) 1352 && r8a66597->gadget.speed == USB_SPEED_UNKNOWN) 1353 r8a66597_update_usb_speed(r8a66597); 1354 1355 r8a66597->old_dvsq = dvsq; 1356 } 1357 1358 static void irq_control_stage(struct r8a66597 *r8a66597) 1359 __releases(r8a66597->lock) 1360 __acquires(r8a66597->lock) 1361 { 1362 struct usb_ctrlrequest ctrl; 1363 u16 ctsq; 1364 1365 ctsq = r8a66597_read(r8a66597, INTSTS0) & CTSQ; 1366 r8a66597_write(r8a66597, ~CTRT, INTSTS0); 1367 1368 switch (ctsq) { 1369 case CS_IDST: { 1370 struct r8a66597_ep *ep; 1371 struct r8a66597_request *req; 1372 ep = &r8a66597->ep[0]; 1373 req = get_request_from_ep(ep); 1374 transfer_complete(ep, req, 0); 1375 } 1376 break; 1377 1378 case CS_RDDS: 1379 case CS_WRDS: 1380 case CS_WRND: 1381 if (setup_packet(r8a66597, &ctrl)) { 1382 spin_unlock(&r8a66597->lock); 1383 if (r8a66597->driver->setup(&r8a66597->gadget, &ctrl) 1384 < 0) 1385 pipe_stall(r8a66597, 0); 1386 spin_lock(&r8a66597->lock); 1387 } 1388 break; 1389 case CS_RDSS: 1390 case CS_WRSS: 1391 control_end(r8a66597, 0); 1392 break; 1393 default: 1394 dev_err(r8a66597_to_dev(r8a66597), 1395 "ctrl_stage: unexpect ctsq(%x)\n", ctsq); 1396 break; 1397 } 1398 } 1399 1400 static void sudmac_finish(struct r8a66597 *r8a66597, struct r8a66597_ep *ep) 1401 { 1402 u16 pipenum; 1403 struct r8a66597_request *req; 1404 u32 len; 1405 int i = 0; 1406 1407 pipenum = ep->pipenum; 1408 pipe_change(r8a66597, pipenum); 1409 1410 while (!(r8a66597_read(r8a66597, ep->fifoctr) & FRDY)) { 1411 udelay(1); 1412 if (unlikely(i++ >= 10000)) { /* timeout = 10 msec */ 1413 dev_err(r8a66597_to_dev(r8a66597), 1414 "%s: FRDY was not set (%d)\n", 1415 __func__, pipenum); 1416 return; 1417 } 1418 } 1419 1420 r8a66597_bset(r8a66597, BCLR, ep->fifoctr); 1421 req = get_request_from_ep(ep); 1422 1423 /* prepare parameters */ 1424 len = r8a66597_sudmac_read(r8a66597, CH0CBC); 1425 req->req.actual += len; 1426 1427 /* clear */ 1428 r8a66597_sudmac_write(r8a66597, CH0STCLR, DSTSCLR); 1429 1430 /* check transfer finish */ 1431 if ((!req->req.zero && (req->req.actual == req->req.length)) 1432 || (len % ep->ep.maxpacket)) { 1433 if (ep->dma->dir) { 1434 disable_irq_ready(r8a66597, pipenum); 1435 enable_irq_empty(r8a66597, pipenum); 1436 } else { 1437 /* Clear the interrupt flag for next transfer */ 1438 r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS); 1439 transfer_complete(ep, req, 0); 1440 } 1441 } 1442 } 1443 1444 static void r8a66597_sudmac_irq(struct r8a66597 *r8a66597) 1445 { 1446 u32 irqsts; 1447 struct r8a66597_ep *ep; 1448 u16 pipenum; 1449 1450 irqsts = r8a66597_sudmac_read(r8a66597, DINTSTS); 1451 if (irqsts & CH0ENDS) { 1452 r8a66597_sudmac_write(r8a66597, CH0ENDC, DINTSTSCLR); 1453 pipenum = (r8a66597_read(r8a66597, D0FIFOSEL) & CURPIPE); 1454 ep = r8a66597->pipenum2ep[pipenum]; 1455 sudmac_finish(r8a66597, ep); 1456 } 1457 } 1458 1459 static irqreturn_t r8a66597_irq(int irq, void *_r8a66597) 1460 { 1461 struct r8a66597 *r8a66597 = _r8a66597; 1462 u16 intsts0; 1463 u16 intenb0; 1464 u16 savepipe; 1465 u16 mask0; 1466 1467 spin_lock(&r8a66597->lock); 1468 1469 if (r8a66597_is_sudmac(r8a66597)) 1470 r8a66597_sudmac_irq(r8a66597); 1471 1472 intsts0 = r8a66597_read(r8a66597, INTSTS0); 1473 intenb0 = r8a66597_read(r8a66597, INTENB0); 1474 1475 savepipe = r8a66597_read(r8a66597, CFIFOSEL); 1476 1477 mask0 = intsts0 & intenb0; 1478 if (mask0) { 1479 u16 brdysts = r8a66597_read(r8a66597, BRDYSTS); 1480 u16 bempsts = r8a66597_read(r8a66597, BEMPSTS); 1481 u16 brdyenb = r8a66597_read(r8a66597, BRDYENB); 1482 u16 bempenb = r8a66597_read(r8a66597, BEMPENB); 1483 1484 if (mask0 & VBINT) { 1485 r8a66597_write(r8a66597, 0xffff & ~VBINT, 1486 INTSTS0); 1487 r8a66597_start_xclock(r8a66597); 1488 1489 /* start vbus sampling */ 1490 r8a66597->old_vbus = r8a66597_read(r8a66597, INTSTS0) 1491 & VBSTS; 1492 r8a66597->scount = R8A66597_MAX_SAMPLING; 1493 1494 mod_timer(&r8a66597->timer, 1495 jiffies + msecs_to_jiffies(50)); 1496 } 1497 if (intsts0 & DVSQ) 1498 irq_device_state(r8a66597); 1499 1500 if ((intsts0 & BRDY) && (intenb0 & BRDYE) 1501 && (brdysts & brdyenb)) 1502 irq_pipe_ready(r8a66597, brdysts, brdyenb); 1503 if ((intsts0 & BEMP) && (intenb0 & BEMPE) 1504 && (bempsts & bempenb)) 1505 irq_pipe_empty(r8a66597, bempsts, bempenb); 1506 1507 if (intsts0 & CTRT) 1508 irq_control_stage(r8a66597); 1509 } 1510 1511 r8a66597_write(r8a66597, savepipe, CFIFOSEL); 1512 1513 spin_unlock(&r8a66597->lock); 1514 return IRQ_HANDLED; 1515 } 1516 1517 static void r8a66597_timer(struct timer_list *t) 1518 { 1519 struct r8a66597 *r8a66597 = from_timer(r8a66597, t, timer); 1520 unsigned long flags; 1521 u16 tmp; 1522 1523 spin_lock_irqsave(&r8a66597->lock, flags); 1524 tmp = r8a66597_read(r8a66597, SYSCFG0); 1525 if (r8a66597->scount > 0) { 1526 tmp = r8a66597_read(r8a66597, INTSTS0) & VBSTS; 1527 if (tmp == r8a66597->old_vbus) { 1528 r8a66597->scount--; 1529 if (r8a66597->scount == 0) { 1530 if (tmp == VBSTS) 1531 r8a66597_usb_connect(r8a66597); 1532 else 1533 r8a66597_usb_disconnect(r8a66597); 1534 } else { 1535 mod_timer(&r8a66597->timer, 1536 jiffies + msecs_to_jiffies(50)); 1537 } 1538 } else { 1539 r8a66597->scount = R8A66597_MAX_SAMPLING; 1540 r8a66597->old_vbus = tmp; 1541 mod_timer(&r8a66597->timer, 1542 jiffies + msecs_to_jiffies(50)); 1543 } 1544 } 1545 spin_unlock_irqrestore(&r8a66597->lock, flags); 1546 } 1547 1548 /*-------------------------------------------------------------------------*/ 1549 static int r8a66597_enable(struct usb_ep *_ep, 1550 const struct usb_endpoint_descriptor *desc) 1551 { 1552 struct r8a66597_ep *ep; 1553 1554 ep = container_of(_ep, struct r8a66597_ep, ep); 1555 return alloc_pipe_config(ep, desc); 1556 } 1557 1558 static int r8a66597_disable(struct usb_ep *_ep) 1559 { 1560 struct r8a66597_ep *ep; 1561 struct r8a66597_request *req; 1562 unsigned long flags; 1563 1564 ep = container_of(_ep, struct r8a66597_ep, ep); 1565 BUG_ON(!ep); 1566 1567 while (!list_empty(&ep->queue)) { 1568 req = get_request_from_ep(ep); 1569 spin_lock_irqsave(&ep->r8a66597->lock, flags); 1570 transfer_complete(ep, req, -ECONNRESET); 1571 spin_unlock_irqrestore(&ep->r8a66597->lock, flags); 1572 } 1573 1574 pipe_irq_disable(ep->r8a66597, ep->pipenum); 1575 return free_pipe_config(ep); 1576 } 1577 1578 static struct usb_request *r8a66597_alloc_request(struct usb_ep *_ep, 1579 gfp_t gfp_flags) 1580 { 1581 struct r8a66597_request *req; 1582 1583 req = kzalloc(sizeof(struct r8a66597_request), gfp_flags); 1584 if (!req) 1585 return NULL; 1586 1587 INIT_LIST_HEAD(&req->queue); 1588 1589 return &req->req; 1590 } 1591 1592 static void r8a66597_free_request(struct usb_ep *_ep, struct usb_request *_req) 1593 { 1594 struct r8a66597_request *req; 1595 1596 req = container_of(_req, struct r8a66597_request, req); 1597 kfree(req); 1598 } 1599 1600 static int r8a66597_queue(struct usb_ep *_ep, struct usb_request *_req, 1601 gfp_t gfp_flags) 1602 { 1603 struct r8a66597_ep *ep; 1604 struct r8a66597_request *req; 1605 unsigned long flags; 1606 int request = 0; 1607 1608 ep = container_of(_ep, struct r8a66597_ep, ep); 1609 req = container_of(_req, struct r8a66597_request, req); 1610 1611 if (ep->r8a66597->gadget.speed == USB_SPEED_UNKNOWN) 1612 return -ESHUTDOWN; 1613 1614 spin_lock_irqsave(&ep->r8a66597->lock, flags); 1615 1616 if (list_empty(&ep->queue)) 1617 request = 1; 1618 1619 list_add_tail(&req->queue, &ep->queue); 1620 req->req.actual = 0; 1621 req->req.status = -EINPROGRESS; 1622 1623 if (ep->ep.desc == NULL) /* control */ 1624 start_ep0(ep, req); 1625 else { 1626 if (request && !ep->busy) 1627 start_packet(ep, req); 1628 } 1629 1630 spin_unlock_irqrestore(&ep->r8a66597->lock, flags); 1631 1632 return 0; 1633 } 1634 1635 static int r8a66597_dequeue(struct usb_ep *_ep, struct usb_request *_req) 1636 { 1637 struct r8a66597_ep *ep; 1638 struct r8a66597_request *req; 1639 unsigned long flags; 1640 1641 ep = container_of(_ep, struct r8a66597_ep, ep); 1642 req = container_of(_req, struct r8a66597_request, req); 1643 1644 spin_lock_irqsave(&ep->r8a66597->lock, flags); 1645 if (!list_empty(&ep->queue)) 1646 transfer_complete(ep, req, -ECONNRESET); 1647 spin_unlock_irqrestore(&ep->r8a66597->lock, flags); 1648 1649 return 0; 1650 } 1651 1652 static int r8a66597_set_halt(struct usb_ep *_ep, int value) 1653 { 1654 struct r8a66597_ep *ep = container_of(_ep, struct r8a66597_ep, ep); 1655 unsigned long flags; 1656 int ret = 0; 1657 1658 spin_lock_irqsave(&ep->r8a66597->lock, flags); 1659 if (!list_empty(&ep->queue)) { 1660 ret = -EAGAIN; 1661 } else if (value) { 1662 ep->busy = 1; 1663 pipe_stall(ep->r8a66597, ep->pipenum); 1664 } else { 1665 ep->busy = 0; 1666 ep->wedge = 0; 1667 pipe_stop(ep->r8a66597, ep->pipenum); 1668 } 1669 spin_unlock_irqrestore(&ep->r8a66597->lock, flags); 1670 return ret; 1671 } 1672 1673 static int r8a66597_set_wedge(struct usb_ep *_ep) 1674 { 1675 struct r8a66597_ep *ep; 1676 unsigned long flags; 1677 1678 ep = container_of(_ep, struct r8a66597_ep, ep); 1679 1680 if (!ep || !ep->ep.desc) 1681 return -EINVAL; 1682 1683 spin_lock_irqsave(&ep->r8a66597->lock, flags); 1684 ep->wedge = 1; 1685 spin_unlock_irqrestore(&ep->r8a66597->lock, flags); 1686 1687 return usb_ep_set_halt(_ep); 1688 } 1689 1690 static void r8a66597_fifo_flush(struct usb_ep *_ep) 1691 { 1692 struct r8a66597_ep *ep; 1693 unsigned long flags; 1694 1695 ep = container_of(_ep, struct r8a66597_ep, ep); 1696 spin_lock_irqsave(&ep->r8a66597->lock, flags); 1697 if (list_empty(&ep->queue) && !ep->busy) { 1698 pipe_stop(ep->r8a66597, ep->pipenum); 1699 r8a66597_bclr(ep->r8a66597, BCLR, ep->fifoctr); 1700 r8a66597_write(ep->r8a66597, ACLRM, ep->pipectr); 1701 r8a66597_write(ep->r8a66597, 0, ep->pipectr); 1702 } 1703 spin_unlock_irqrestore(&ep->r8a66597->lock, flags); 1704 } 1705 1706 static const struct usb_ep_ops r8a66597_ep_ops = { 1707 .enable = r8a66597_enable, 1708 .disable = r8a66597_disable, 1709 1710 .alloc_request = r8a66597_alloc_request, 1711 .free_request = r8a66597_free_request, 1712 1713 .queue = r8a66597_queue, 1714 .dequeue = r8a66597_dequeue, 1715 1716 .set_halt = r8a66597_set_halt, 1717 .set_wedge = r8a66597_set_wedge, 1718 .fifo_flush = r8a66597_fifo_flush, 1719 }; 1720 1721 /*-------------------------------------------------------------------------*/ 1722 static int r8a66597_start(struct usb_gadget *gadget, 1723 struct usb_gadget_driver *driver) 1724 { 1725 struct r8a66597 *r8a66597 = gadget_to_r8a66597(gadget); 1726 1727 if (!driver 1728 || driver->max_speed < USB_SPEED_HIGH 1729 || !driver->setup) 1730 return -EINVAL; 1731 if (!r8a66597) 1732 return -ENODEV; 1733 1734 /* hook up the driver */ 1735 r8a66597->driver = driver; 1736 1737 init_controller(r8a66597); 1738 r8a66597_bset(r8a66597, VBSE, INTENB0); 1739 if (r8a66597_read(r8a66597, INTSTS0) & VBSTS) { 1740 r8a66597_start_xclock(r8a66597); 1741 /* start vbus sampling */ 1742 r8a66597->old_vbus = r8a66597_read(r8a66597, 1743 INTSTS0) & VBSTS; 1744 r8a66597->scount = R8A66597_MAX_SAMPLING; 1745 mod_timer(&r8a66597->timer, jiffies + msecs_to_jiffies(50)); 1746 } 1747 1748 return 0; 1749 } 1750 1751 static int r8a66597_stop(struct usb_gadget *gadget) 1752 { 1753 struct r8a66597 *r8a66597 = gadget_to_r8a66597(gadget); 1754 unsigned long flags; 1755 1756 spin_lock_irqsave(&r8a66597->lock, flags); 1757 r8a66597_bclr(r8a66597, VBSE, INTENB0); 1758 disable_controller(r8a66597); 1759 spin_unlock_irqrestore(&r8a66597->lock, flags); 1760 1761 r8a66597->driver = NULL; 1762 return 0; 1763 } 1764 1765 /*-------------------------------------------------------------------------*/ 1766 static int r8a66597_get_frame(struct usb_gadget *_gadget) 1767 { 1768 struct r8a66597 *r8a66597 = gadget_to_r8a66597(_gadget); 1769 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF; 1770 } 1771 1772 static int r8a66597_pullup(struct usb_gadget *gadget, int is_on) 1773 { 1774 struct r8a66597 *r8a66597 = gadget_to_r8a66597(gadget); 1775 unsigned long flags; 1776 1777 spin_lock_irqsave(&r8a66597->lock, flags); 1778 if (is_on) 1779 r8a66597_bset(r8a66597, DPRPU, SYSCFG0); 1780 else 1781 r8a66597_bclr(r8a66597, DPRPU, SYSCFG0); 1782 spin_unlock_irqrestore(&r8a66597->lock, flags); 1783 1784 return 0; 1785 } 1786 1787 static int r8a66597_set_selfpowered(struct usb_gadget *gadget, int is_self) 1788 { 1789 struct r8a66597 *r8a66597 = gadget_to_r8a66597(gadget); 1790 1791 gadget->is_selfpowered = (is_self != 0); 1792 if (is_self) 1793 r8a66597->device_status |= 1 << USB_DEVICE_SELF_POWERED; 1794 else 1795 r8a66597->device_status &= ~(1 << USB_DEVICE_SELF_POWERED); 1796 1797 return 0; 1798 } 1799 1800 static const struct usb_gadget_ops r8a66597_gadget_ops = { 1801 .get_frame = r8a66597_get_frame, 1802 .udc_start = r8a66597_start, 1803 .udc_stop = r8a66597_stop, 1804 .pullup = r8a66597_pullup, 1805 .set_selfpowered = r8a66597_set_selfpowered, 1806 }; 1807 1808 static int r8a66597_remove(struct platform_device *pdev) 1809 { 1810 struct r8a66597 *r8a66597 = platform_get_drvdata(pdev); 1811 1812 usb_del_gadget_udc(&r8a66597->gadget); 1813 del_timer_sync(&r8a66597->timer); 1814 r8a66597_free_request(&r8a66597->ep[0].ep, r8a66597->ep0_req); 1815 1816 if (r8a66597->pdata->on_chip) { 1817 clk_disable_unprepare(r8a66597->clk); 1818 } 1819 1820 return 0; 1821 } 1822 1823 static void nop_completion(struct usb_ep *ep, struct usb_request *r) 1824 { 1825 } 1826 1827 static int r8a66597_sudmac_ioremap(struct r8a66597 *r8a66597, 1828 struct platform_device *pdev) 1829 { 1830 struct resource *res; 1831 1832 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sudmac"); 1833 r8a66597->sudmac_reg = devm_ioremap_resource(&pdev->dev, res); 1834 return PTR_ERR_OR_ZERO(r8a66597->sudmac_reg); 1835 } 1836 1837 static int r8a66597_probe(struct platform_device *pdev) 1838 { 1839 struct device *dev = &pdev->dev; 1840 char clk_name[8]; 1841 struct resource *res, *ires; 1842 int irq; 1843 void __iomem *reg = NULL; 1844 struct r8a66597 *r8a66597 = NULL; 1845 int ret = 0; 1846 int i; 1847 unsigned long irq_trigger; 1848 1849 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1850 reg = devm_ioremap_resource(&pdev->dev, res); 1851 if (IS_ERR(reg)) 1852 return PTR_ERR(reg); 1853 1854 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 1855 irq = ires->start; 1856 irq_trigger = ires->flags & IRQF_TRIGGER_MASK; 1857 1858 if (irq < 0) { 1859 dev_err(dev, "platform_get_irq error.\n"); 1860 return -ENODEV; 1861 } 1862 1863 /* initialize ucd */ 1864 r8a66597 = devm_kzalloc(dev, sizeof(struct r8a66597), GFP_KERNEL); 1865 if (r8a66597 == NULL) 1866 return -ENOMEM; 1867 1868 spin_lock_init(&r8a66597->lock); 1869 platform_set_drvdata(pdev, r8a66597); 1870 r8a66597->pdata = dev_get_platdata(dev); 1871 r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; 1872 1873 r8a66597->gadget.ops = &r8a66597_gadget_ops; 1874 r8a66597->gadget.max_speed = USB_SPEED_HIGH; 1875 r8a66597->gadget.name = udc_name; 1876 1877 timer_setup(&r8a66597->timer, r8a66597_timer, 0); 1878 r8a66597->reg = reg; 1879 1880 if (r8a66597->pdata->on_chip) { 1881 snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id); 1882 r8a66597->clk = devm_clk_get(dev, clk_name); 1883 if (IS_ERR(r8a66597->clk)) { 1884 dev_err(dev, "cannot get clock \"%s\"\n", clk_name); 1885 return PTR_ERR(r8a66597->clk); 1886 } 1887 clk_prepare_enable(r8a66597->clk); 1888 } 1889 1890 if (r8a66597->pdata->sudmac) { 1891 ret = r8a66597_sudmac_ioremap(r8a66597, pdev); 1892 if (ret < 0) 1893 goto clean_up2; 1894 } 1895 1896 disable_controller(r8a66597); /* make sure controller is disabled */ 1897 1898 ret = devm_request_irq(dev, irq, r8a66597_irq, IRQF_SHARED, 1899 udc_name, r8a66597); 1900 if (ret < 0) { 1901 dev_err(dev, "request_irq error (%d)\n", ret); 1902 goto clean_up2; 1903 } 1904 1905 INIT_LIST_HEAD(&r8a66597->gadget.ep_list); 1906 r8a66597->gadget.ep0 = &r8a66597->ep[0].ep; 1907 INIT_LIST_HEAD(&r8a66597->gadget.ep0->ep_list); 1908 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { 1909 struct r8a66597_ep *ep = &r8a66597->ep[i]; 1910 1911 if (i != 0) { 1912 INIT_LIST_HEAD(&r8a66597->ep[i].ep.ep_list); 1913 list_add_tail(&r8a66597->ep[i].ep.ep_list, 1914 &r8a66597->gadget.ep_list); 1915 } 1916 ep->r8a66597 = r8a66597; 1917 INIT_LIST_HEAD(&ep->queue); 1918 ep->ep.name = r8a66597_ep_name[i]; 1919 ep->ep.ops = &r8a66597_ep_ops; 1920 usb_ep_set_maxpacket_limit(&ep->ep, 512); 1921 1922 if (i == 0) { 1923 ep->ep.caps.type_control = true; 1924 } else { 1925 ep->ep.caps.type_iso = true; 1926 ep->ep.caps.type_bulk = true; 1927 ep->ep.caps.type_int = true; 1928 } 1929 ep->ep.caps.dir_in = true; 1930 ep->ep.caps.dir_out = true; 1931 } 1932 usb_ep_set_maxpacket_limit(&r8a66597->ep[0].ep, 64); 1933 r8a66597->ep[0].pipenum = 0; 1934 r8a66597->ep[0].fifoaddr = CFIFO; 1935 r8a66597->ep[0].fifosel = CFIFOSEL; 1936 r8a66597->ep[0].fifoctr = CFIFOCTR; 1937 r8a66597->ep[0].pipectr = get_pipectr_addr(0); 1938 r8a66597->pipenum2ep[0] = &r8a66597->ep[0]; 1939 r8a66597->epaddr2ep[0] = &r8a66597->ep[0]; 1940 1941 r8a66597->ep0_req = r8a66597_alloc_request(&r8a66597->ep[0].ep, 1942 GFP_KERNEL); 1943 if (r8a66597->ep0_req == NULL) { 1944 ret = -ENOMEM; 1945 goto clean_up2; 1946 } 1947 r8a66597->ep0_req->complete = nop_completion; 1948 1949 ret = usb_add_gadget_udc(dev, &r8a66597->gadget); 1950 if (ret) 1951 goto err_add_udc; 1952 1953 dev_info(dev, "version %s\n", DRIVER_VERSION); 1954 return 0; 1955 1956 err_add_udc: 1957 r8a66597_free_request(&r8a66597->ep[0].ep, r8a66597->ep0_req); 1958 clean_up2: 1959 if (r8a66597->pdata->on_chip) 1960 clk_disable_unprepare(r8a66597->clk); 1961 1962 if (r8a66597->ep0_req) 1963 r8a66597_free_request(&r8a66597->ep[0].ep, r8a66597->ep0_req); 1964 1965 return ret; 1966 } 1967 1968 /*-------------------------------------------------------------------------*/ 1969 static struct platform_driver r8a66597_driver = { 1970 .remove = r8a66597_remove, 1971 .driver = { 1972 .name = (char *) udc_name, 1973 }, 1974 }; 1975 1976 module_platform_driver_probe(r8a66597_driver, r8a66597_probe); 1977 1978 MODULE_DESCRIPTION("R8A66597 USB gadget driver"); 1979 MODULE_LICENSE("GPL"); 1980 MODULE_AUTHOR("Yoshihiro Shimoda"); 1981 MODULE_ALIAS("platform:r8a66597_udc"); 1982