1 /* 2 * R8A66597 HCD (Host Controller Driver) 3 * 4 * Copyright (C) 2006-2007 Renesas Solutions Corp. 5 * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO) 6 * Portions Copyright (C) 2004-2005 David Brownell 7 * Portions Copyright (C) 1999 Roman Weissgaerber 8 * 9 * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; version 2 of the License. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 23 * 24 */ 25 26 #include <linux/module.h> 27 #include <linux/kernel.h> 28 #include <linux/sched.h> 29 #include <linux/errno.h> 30 #include <linux/init.h> 31 #include <linux/timer.h> 32 #include <linux/delay.h> 33 #include <linux/list.h> 34 #include <linux/interrupt.h> 35 #include <linux/usb.h> 36 #include <linux/usb/hcd.h> 37 #include <linux/platform_device.h> 38 #include <linux/io.h> 39 #include <linux/mm.h> 40 #include <linux/irq.h> 41 #include <linux/slab.h> 42 #include <asm/cacheflush.h> 43 44 #include "r8a66597.h" 45 46 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver"); 47 MODULE_LICENSE("GPL"); 48 MODULE_AUTHOR("Yoshihiro Shimoda"); 49 MODULE_ALIAS("platform:r8a66597_hcd"); 50 51 #define DRIVER_VERSION "2009-05-26" 52 53 static const char hcd_name[] = "r8a66597_hcd"; 54 55 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum); 56 static int r8a66597_get_frame(struct usb_hcd *hcd); 57 58 /* this function must be called with interrupt disabled */ 59 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 60 unsigned long reg) 61 { 62 u16 tmp; 63 64 tmp = r8a66597_read(r8a66597, INTENB0); 65 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 66 r8a66597_bset(r8a66597, 1 << pipenum, reg); 67 r8a66597_write(r8a66597, tmp, INTENB0); 68 } 69 70 /* this function must be called with interrupt disabled */ 71 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 72 unsigned long reg) 73 { 74 u16 tmp; 75 76 tmp = r8a66597_read(r8a66597, INTENB0); 77 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 78 r8a66597_bclr(r8a66597, 1 << pipenum, reg); 79 r8a66597_write(r8a66597, tmp, INTENB0); 80 } 81 82 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address, 83 u16 usbspd, u8 upphub, u8 hubport, int port) 84 { 85 u16 val; 86 unsigned long devadd_reg = get_devadd_addr(r8a66597_address); 87 88 val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001); 89 r8a66597_write(r8a66597, val, devadd_reg); 90 } 91 92 static int r8a66597_clock_enable(struct r8a66597 *r8a66597) 93 { 94 u16 tmp; 95 int i = 0; 96 97 if (r8a66597->pdata->on_chip) { 98 clk_enable(r8a66597->clk); 99 do { 100 r8a66597_write(r8a66597, SCKE, SYSCFG0); 101 tmp = r8a66597_read(r8a66597, SYSCFG0); 102 if (i++ > 1000) { 103 printk(KERN_ERR "r8a66597: reg access fail.\n"); 104 return -ENXIO; 105 } 106 } while ((tmp & SCKE) != SCKE); 107 r8a66597_write(r8a66597, 0x04, 0x02); 108 } else { 109 do { 110 r8a66597_write(r8a66597, USBE, SYSCFG0); 111 tmp = r8a66597_read(r8a66597, SYSCFG0); 112 if (i++ > 1000) { 113 printk(KERN_ERR "r8a66597: reg access fail.\n"); 114 return -ENXIO; 115 } 116 } while ((tmp & USBE) != USBE); 117 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 118 r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata), 119 XTAL, SYSCFG0); 120 121 i = 0; 122 r8a66597_bset(r8a66597, XCKE, SYSCFG0); 123 do { 124 msleep(1); 125 tmp = r8a66597_read(r8a66597, SYSCFG0); 126 if (i++ > 500) { 127 printk(KERN_ERR "r8a66597: reg access fail.\n"); 128 return -ENXIO; 129 } 130 } while ((tmp & SCKE) != SCKE); 131 } 132 133 return 0; 134 } 135 136 static void r8a66597_clock_disable(struct r8a66597 *r8a66597) 137 { 138 r8a66597_bclr(r8a66597, SCKE, SYSCFG0); 139 udelay(1); 140 141 if (r8a66597->pdata->on_chip) { 142 clk_disable(r8a66597->clk); 143 } else { 144 r8a66597_bclr(r8a66597, PLLC, SYSCFG0); 145 r8a66597_bclr(r8a66597, XCKE, SYSCFG0); 146 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 147 } 148 } 149 150 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port) 151 { 152 u16 val; 153 154 val = port ? DRPD : DCFM | DRPD; 155 r8a66597_bset(r8a66597, val, get_syscfg_reg(port)); 156 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 157 158 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port)); 159 r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port)); 160 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 161 } 162 163 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port) 164 { 165 u16 val, tmp; 166 167 r8a66597_write(r8a66597, 0, get_intenb_reg(port)); 168 r8a66597_write(r8a66597, 0, get_intsts_reg(port)); 169 170 r8a66597_port_power(r8a66597, port, 0); 171 172 do { 173 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS; 174 udelay(640); 175 } while (tmp == EDGESTS); 176 177 val = port ? DRPD : DCFM | DRPD; 178 r8a66597_bclr(r8a66597, val, get_syscfg_reg(port)); 179 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 180 } 181 182 static int enable_controller(struct r8a66597 *r8a66597) 183 { 184 int ret, port; 185 u16 vif = r8a66597->pdata->vif ? LDRV : 0; 186 u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0; 187 u16 endian = r8a66597->pdata->endian ? BIGEND : 0; 188 189 ret = r8a66597_clock_enable(r8a66597); 190 if (ret < 0) 191 return ret; 192 193 r8a66597_bset(r8a66597, vif & LDRV, PINCFG); 194 r8a66597_bset(r8a66597, USBE, SYSCFG0); 195 196 r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 197 r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG); 198 r8a66597_bset(r8a66597, BRDY0, BRDYENB); 199 r8a66597_bset(r8a66597, BEMP0, BEMPENB); 200 201 r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL); 202 r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL); 203 r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL); 204 r8a66597_bset(r8a66597, TRNENSEL, SOFCFG); 205 206 r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1); 207 208 for (port = 0; port < r8a66597->max_root_hub; port++) 209 r8a66597_enable_port(r8a66597, port); 210 211 return 0; 212 } 213 214 static void disable_controller(struct r8a66597 *r8a66597) 215 { 216 int port; 217 218 /* disable interrupts */ 219 r8a66597_write(r8a66597, 0, INTENB0); 220 r8a66597_write(r8a66597, 0, INTENB1); 221 r8a66597_write(r8a66597, 0, BRDYENB); 222 r8a66597_write(r8a66597, 0, BEMPENB); 223 r8a66597_write(r8a66597, 0, NRDYENB); 224 225 /* clear status */ 226 r8a66597_write(r8a66597, 0, BRDYSTS); 227 r8a66597_write(r8a66597, 0, NRDYSTS); 228 r8a66597_write(r8a66597, 0, BEMPSTS); 229 230 for (port = 0; port < r8a66597->max_root_hub; port++) 231 r8a66597_disable_port(r8a66597, port); 232 233 r8a66597_clock_disable(r8a66597); 234 } 235 236 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597, 237 struct usb_device *udev) 238 { 239 struct r8a66597_device *dev; 240 241 if (udev->parent && udev->parent->devnum != 1) 242 udev = udev->parent; 243 244 dev = dev_get_drvdata(&udev->dev); 245 if (dev) 246 return dev->address; 247 else 248 return 0; 249 } 250 251 static int is_child_device(char *devpath) 252 { 253 return (devpath[2] ? 1 : 0); 254 } 255 256 static int is_hub_limit(char *devpath) 257 { 258 return ((strlen(devpath) >= 4) ? 1 : 0); 259 } 260 261 static void get_port_number(struct r8a66597 *r8a66597, 262 char *devpath, u16 *root_port, u16 *hub_port) 263 { 264 if (root_port) { 265 *root_port = (devpath[0] & 0x0F) - 1; 266 if (*root_port >= r8a66597->max_root_hub) 267 printk(KERN_ERR "r8a66597: Illegal root port number.\n"); 268 } 269 if (hub_port) 270 *hub_port = devpath[2] & 0x0F; 271 } 272 273 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed) 274 { 275 u16 usbspd = 0; 276 277 switch (speed) { 278 case USB_SPEED_LOW: 279 usbspd = LSMODE; 280 break; 281 case USB_SPEED_FULL: 282 usbspd = FSMODE; 283 break; 284 case USB_SPEED_HIGH: 285 usbspd = HSMODE; 286 break; 287 default: 288 printk(KERN_ERR "r8a66597: unknown speed\n"); 289 break; 290 } 291 292 return usbspd; 293 } 294 295 static void set_child_connect_map(struct r8a66597 *r8a66597, int address) 296 { 297 int idx; 298 299 idx = address / 32; 300 r8a66597->child_connect_map[idx] |= 1 << (address % 32); 301 } 302 303 static void put_child_connect_map(struct r8a66597 *r8a66597, int address) 304 { 305 int idx; 306 307 idx = address / 32; 308 r8a66597->child_connect_map[idx] &= ~(1 << (address % 32)); 309 } 310 311 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch) 312 { 313 u16 pipenum = pipe->info.pipenum; 314 const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO}; 315 const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL}; 316 const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR}; 317 318 if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */ 319 dma_ch = R8A66597_PIPE_NO_DMA; 320 321 pipe->fifoaddr = fifoaddr[dma_ch]; 322 pipe->fifosel = fifosel[dma_ch]; 323 pipe->fifoctr = fifoctr[dma_ch]; 324 325 if (pipenum == 0) 326 pipe->pipectr = DCPCTR; 327 else 328 pipe->pipectr = get_pipectr_addr(pipenum); 329 330 if (check_bulk_or_isoc(pipenum)) { 331 pipe->pipetre = get_pipetre_addr(pipenum); 332 pipe->pipetrn = get_pipetrn_addr(pipenum); 333 } else { 334 pipe->pipetre = 0; 335 pipe->pipetrn = 0; 336 } 337 } 338 339 static struct r8a66597_device * 340 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb) 341 { 342 if (usb_pipedevice(urb->pipe) == 0) 343 return &r8a66597->device0; 344 345 return dev_get_drvdata(&urb->dev->dev); 346 } 347 348 static int make_r8a66597_device(struct r8a66597 *r8a66597, 349 struct urb *urb, u8 addr) 350 { 351 struct r8a66597_device *dev; 352 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */ 353 354 dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC); 355 if (dev == NULL) 356 return -ENOMEM; 357 358 dev_set_drvdata(&urb->dev->dev, dev); 359 dev->udev = urb->dev; 360 dev->address = addr; 361 dev->usb_address = usb_address; 362 dev->state = USB_STATE_ADDRESS; 363 dev->ep_in_toggle = 0; 364 dev->ep_out_toggle = 0; 365 INIT_LIST_HEAD(&dev->device_list); 366 list_add_tail(&dev->device_list, &r8a66597->child_device); 367 368 get_port_number(r8a66597, urb->dev->devpath, 369 &dev->root_port, &dev->hub_port); 370 if (!is_child_device(urb->dev->devpath)) 371 r8a66597->root_hub[dev->root_port].dev = dev; 372 373 set_devadd_reg(r8a66597, dev->address, 374 get_r8a66597_usb_speed(urb->dev->speed), 375 get_parent_r8a66597_address(r8a66597, urb->dev), 376 dev->hub_port, dev->root_port); 377 378 return 0; 379 } 380 381 /* this function must be called with interrupt disabled */ 382 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb) 383 { 384 u8 addr; /* R8A66597's address */ 385 struct r8a66597_device *dev; 386 387 if (is_hub_limit(urb->dev->devpath)) { 388 dev_err(&urb->dev->dev, "External hub limit reached.\n"); 389 return 0; 390 } 391 392 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 393 if (dev && dev->state >= USB_STATE_ADDRESS) 394 return dev->address; 395 396 for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) { 397 if (r8a66597->address_map & (1 << addr)) 398 continue; 399 400 dev_dbg(&urb->dev->dev, "alloc_address: r8a66597_addr=%d\n", addr); 401 r8a66597->address_map |= 1 << addr; 402 403 if (make_r8a66597_device(r8a66597, urb, addr) < 0) 404 return 0; 405 406 return addr; 407 } 408 409 dev_err(&urb->dev->dev, 410 "cannot communicate with a USB device more than 10.(%x)\n", 411 r8a66597->address_map); 412 413 return 0; 414 } 415 416 /* this function must be called with interrupt disabled */ 417 static void free_usb_address(struct r8a66597 *r8a66597, 418 struct r8a66597_device *dev, int reset) 419 { 420 int port; 421 422 if (!dev) 423 return; 424 425 dev_dbg(&dev->udev->dev, "free_addr: addr=%d\n", dev->address); 426 427 dev->state = USB_STATE_DEFAULT; 428 r8a66597->address_map &= ~(1 << dev->address); 429 dev->address = 0; 430 /* 431 * Only when resetting USB, it is necessary to erase drvdata. When 432 * a usb device with usb hub is disconnect, "dev->udev" is already 433 * freed on usb_desconnect(). So we cannot access the data. 434 */ 435 if (reset) 436 dev_set_drvdata(&dev->udev->dev, NULL); 437 list_del(&dev->device_list); 438 kfree(dev); 439 440 for (port = 0; port < r8a66597->max_root_hub; port++) { 441 if (r8a66597->root_hub[port].dev == dev) { 442 r8a66597->root_hub[port].dev = NULL; 443 break; 444 } 445 } 446 } 447 448 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg, 449 u16 mask, u16 loop) 450 { 451 u16 tmp; 452 int i = 0; 453 454 do { 455 tmp = r8a66597_read(r8a66597, reg); 456 if (i++ > 1000000) { 457 printk(KERN_ERR "r8a66597: register%lx, loop %x " 458 "is timeout\n", reg, loop); 459 break; 460 } 461 ndelay(1); 462 } while ((tmp & mask) != loop); 463 } 464 465 /* this function must be called with interrupt disabled */ 466 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 467 { 468 u16 tmp; 469 470 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 471 if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */ 472 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 473 r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr); 474 } 475 476 /* this function must be called with interrupt disabled */ 477 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 478 { 479 u16 tmp; 480 481 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 482 if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */ 483 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr); 484 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 485 r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0); 486 } 487 488 /* this function must be called with interrupt disabled */ 489 static void clear_all_buffer(struct r8a66597 *r8a66597, 490 struct r8a66597_pipe *pipe) 491 { 492 u16 tmp; 493 494 if (!pipe || pipe->info.pipenum == 0) 495 return; 496 497 pipe_stop(r8a66597, pipe); 498 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr); 499 tmp = r8a66597_read(r8a66597, pipe->pipectr); 500 tmp = r8a66597_read(r8a66597, pipe->pipectr); 501 tmp = r8a66597_read(r8a66597, pipe->pipectr); 502 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr); 503 } 504 505 /* this function must be called with interrupt disabled */ 506 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597, 507 struct r8a66597_pipe *pipe, int toggle) 508 { 509 if (toggle) 510 r8a66597_bset(r8a66597, SQSET, pipe->pipectr); 511 else 512 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr); 513 } 514 515 static inline unsigned short mbw_value(struct r8a66597 *r8a66597) 516 { 517 if (r8a66597->pdata->on_chip) 518 return MBW_32; 519 else 520 return MBW_16; 521 } 522 523 /* this function must be called with interrupt disabled */ 524 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum) 525 { 526 unsigned short mbw = mbw_value(r8a66597); 527 528 r8a66597_mdfy(r8a66597, mbw | pipenum, mbw | CURPIPE, CFIFOSEL); 529 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum); 530 } 531 532 /* this function must be called with interrupt disabled */ 533 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597, 534 struct r8a66597_pipe *pipe) 535 { 536 unsigned short mbw = mbw_value(r8a66597); 537 538 cfifo_change(r8a66597, 0); 539 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D0FIFOSEL); 540 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D1FIFOSEL); 541 542 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, mbw | CURPIPE, 543 pipe->fifosel); 544 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum); 545 } 546 547 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep) 548 { 549 struct r8a66597_pipe *pipe = hep->hcpriv; 550 551 if (usb_pipeendpoint(urb->pipe) == 0) 552 return 0; 553 else 554 return pipe->info.pipenum; 555 } 556 557 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb) 558 { 559 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 560 561 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address; 562 } 563 564 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev, 565 int urb_pipe) 566 { 567 if (!dev) 568 return NULL; 569 570 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle; 571 } 572 573 /* this function must be called with interrupt disabled */ 574 static void pipe_toggle_set(struct r8a66597 *r8a66597, 575 struct r8a66597_pipe *pipe, 576 struct urb *urb, int set) 577 { 578 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 579 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 580 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 581 582 if (!toggle) 583 return; 584 585 if (set) 586 *toggle |= 1 << endpoint; 587 else 588 *toggle &= ~(1 << endpoint); 589 } 590 591 /* this function must be called with interrupt disabled */ 592 static void pipe_toggle_save(struct r8a66597 *r8a66597, 593 struct r8a66597_pipe *pipe, 594 struct urb *urb) 595 { 596 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON) 597 pipe_toggle_set(r8a66597, pipe, urb, 1); 598 else 599 pipe_toggle_set(r8a66597, pipe, urb, 0); 600 } 601 602 /* this function must be called with interrupt disabled */ 603 static void pipe_toggle_restore(struct r8a66597 *r8a66597, 604 struct r8a66597_pipe *pipe, 605 struct urb *urb) 606 { 607 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 608 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 609 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 610 611 if (!toggle) 612 return; 613 614 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint)); 615 } 616 617 /* this function must be called with interrupt disabled */ 618 static void pipe_buffer_setting(struct r8a66597 *r8a66597, 619 struct r8a66597_pipe_info *info) 620 { 621 u16 val = 0; 622 623 if (info->pipenum == 0) 624 return; 625 626 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 627 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 628 r8a66597_write(r8a66597, info->pipenum, PIPESEL); 629 if (!info->dir_in) 630 val |= R8A66597_DIR; 631 if (info->type == R8A66597_BULK && info->dir_in) 632 val |= R8A66597_DBLB | R8A66597_SHTNAK; 633 val |= info->type | info->epnum; 634 r8a66597_write(r8a66597, val, PIPECFG); 635 636 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum), 637 PIPEBUF); 638 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket, 639 PIPEMAXP); 640 r8a66597_write(r8a66597, info->interval, PIPEPERI); 641 } 642 643 /* this function must be called with interrupt disabled */ 644 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td) 645 { 646 struct r8a66597_pipe_info *info; 647 struct urb *urb = td->urb; 648 649 if (td->pipenum > 0) { 650 info = &td->pipe->info; 651 cfifo_change(r8a66597, 0); 652 pipe_buffer_setting(r8a66597, info); 653 654 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), 655 usb_pipeout(urb->pipe)) && 656 !usb_pipecontrol(urb->pipe)) { 657 r8a66597_pipe_toggle(r8a66597, td->pipe, 0); 658 pipe_toggle_set(r8a66597, td->pipe, urb, 0); 659 clear_all_buffer(r8a66597, td->pipe); 660 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), 661 usb_pipeout(urb->pipe), 1); 662 } 663 pipe_toggle_restore(r8a66597, td->pipe, urb); 664 } 665 } 666 667 /* this function must be called with interrupt disabled */ 668 static u16 get_empty_pipenum(struct r8a66597 *r8a66597, 669 struct usb_endpoint_descriptor *ep) 670 { 671 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min; 672 673 memset(array, 0, sizeof(array)); 674 switch (usb_endpoint_type(ep)) { 675 case USB_ENDPOINT_XFER_BULK: 676 if (usb_endpoint_dir_in(ep)) 677 array[i++] = 4; 678 else { 679 array[i++] = 3; 680 array[i++] = 5; 681 } 682 break; 683 case USB_ENDPOINT_XFER_INT: 684 if (usb_endpoint_dir_in(ep)) { 685 array[i++] = 6; 686 array[i++] = 7; 687 array[i++] = 8; 688 } else 689 array[i++] = 9; 690 break; 691 case USB_ENDPOINT_XFER_ISOC: 692 if (usb_endpoint_dir_in(ep)) 693 array[i++] = 2; 694 else 695 array[i++] = 1; 696 break; 697 default: 698 printk(KERN_ERR "r8a66597: Illegal type\n"); 699 return 0; 700 } 701 702 i = 1; 703 min = array[0]; 704 while (array[i] != 0) { 705 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]]) 706 min = array[i]; 707 i++; 708 } 709 710 return min; 711 } 712 713 static u16 get_r8a66597_type(__u8 type) 714 { 715 u16 r8a66597_type; 716 717 switch (type) { 718 case USB_ENDPOINT_XFER_BULK: 719 r8a66597_type = R8A66597_BULK; 720 break; 721 case USB_ENDPOINT_XFER_INT: 722 r8a66597_type = R8A66597_INT; 723 break; 724 case USB_ENDPOINT_XFER_ISOC: 725 r8a66597_type = R8A66597_ISO; 726 break; 727 default: 728 printk(KERN_ERR "r8a66597: Illegal type\n"); 729 r8a66597_type = 0x0000; 730 break; 731 } 732 733 return r8a66597_type; 734 } 735 736 static u16 get_bufnum(u16 pipenum) 737 { 738 u16 bufnum = 0; 739 740 if (pipenum == 0) 741 bufnum = 0; 742 else if (check_bulk_or_isoc(pipenum)) 743 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2; 744 else if (check_interrupt(pipenum)) 745 bufnum = 4 + (pipenum - 6); 746 else 747 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); 748 749 return bufnum; 750 } 751 752 static u16 get_buf_bsize(u16 pipenum) 753 { 754 u16 buf_bsize = 0; 755 756 if (pipenum == 0) 757 buf_bsize = 3; 758 else if (check_bulk_or_isoc(pipenum)) 759 buf_bsize = R8A66597_BUF_BSIZE - 1; 760 else if (check_interrupt(pipenum)) 761 buf_bsize = 0; 762 else 763 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); 764 765 return buf_bsize; 766 } 767 768 /* this function must be called with interrupt disabled */ 769 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597, 770 struct r8a66597_device *dev, 771 struct r8a66597_pipe *pipe, 772 struct urb *urb) 773 { 774 int i; 775 struct r8a66597_pipe_info *info = &pipe->info; 776 unsigned short mbw = mbw_value(r8a66597); 777 778 /* pipe dma is only for external controlles */ 779 if (r8a66597->pdata->on_chip) 780 return; 781 782 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) { 783 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) { 784 if ((r8a66597->dma_map & (1 << i)) != 0) 785 continue; 786 787 dev_info(&dev->udev->dev, 788 "address %d, EndpointAddress 0x%02x use " 789 "DMA FIFO\n", usb_pipedevice(urb->pipe), 790 info->dir_in ? 791 USB_ENDPOINT_DIR_MASK + info->epnum 792 : info->epnum); 793 794 r8a66597->dma_map |= 1 << i; 795 dev->dma_map |= 1 << i; 796 set_pipe_reg_addr(pipe, i); 797 798 cfifo_change(r8a66597, 0); 799 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, 800 mbw | CURPIPE, pipe->fifosel); 801 802 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, 803 pipe->info.pipenum); 804 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr); 805 break; 806 } 807 } 808 } 809 810 /* this function must be called with interrupt disabled */ 811 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb, 812 struct usb_host_endpoint *hep, 813 struct r8a66597_pipe_info *info) 814 { 815 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 816 struct r8a66597_pipe *pipe = hep->hcpriv; 817 818 dev_dbg(&dev->udev->dev, "enable_pipe:\n"); 819 820 pipe->info = *info; 821 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA); 822 r8a66597->pipe_cnt[pipe->info.pipenum]++; 823 dev->pipe_cnt[pipe->info.pipenum]++; 824 825 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb); 826 } 827 828 static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb, 829 int status) 830 __releases(r8a66597->lock) 831 __acquires(r8a66597->lock) 832 { 833 if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) { 834 void *ptr; 835 836 for (ptr = urb->transfer_buffer; 837 ptr < urb->transfer_buffer + urb->transfer_buffer_length; 838 ptr += PAGE_SIZE) 839 flush_dcache_page(virt_to_page(ptr)); 840 } 841 842 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb); 843 spin_unlock(&r8a66597->lock); 844 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status); 845 spin_lock(&r8a66597->lock); 846 } 847 848 /* this function must be called with interrupt disabled */ 849 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address) 850 { 851 struct r8a66597_td *td, *next; 852 struct urb *urb; 853 struct list_head *list = &r8a66597->pipe_queue[pipenum]; 854 855 if (list_empty(list)) 856 return; 857 858 list_for_each_entry_safe(td, next, list, queue) { 859 if (td->address != address) 860 continue; 861 862 urb = td->urb; 863 list_del(&td->queue); 864 kfree(td); 865 866 if (urb) 867 r8a66597_urb_done(r8a66597, urb, -ENODEV); 868 869 break; 870 } 871 } 872 873 /* this function must be called with interrupt disabled */ 874 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597, 875 struct r8a66597_device *dev) 876 { 877 int check_ep0 = 0; 878 u16 pipenum; 879 880 if (!dev) 881 return; 882 883 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 884 if (!dev->pipe_cnt[pipenum]) 885 continue; 886 887 if (!check_ep0) { 888 check_ep0 = 1; 889 force_dequeue(r8a66597, 0, dev->address); 890 } 891 892 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum]; 893 dev->pipe_cnt[pipenum] = 0; 894 force_dequeue(r8a66597, pipenum, dev->address); 895 } 896 897 dev_dbg(&dev->udev->dev, "disable_pipe\n"); 898 899 r8a66597->dma_map &= ~(dev->dma_map); 900 dev->dma_map = 0; 901 } 902 903 static u16 get_interval(struct urb *urb, __u8 interval) 904 { 905 u16 time = 1; 906 int i; 907 908 if (urb->dev->speed == USB_SPEED_HIGH) { 909 if (interval > IITV) 910 time = IITV; 911 else 912 time = interval ? interval - 1 : 0; 913 } else { 914 if (interval > 128) { 915 time = IITV; 916 } else { 917 /* calculate the nearest value for PIPEPERI */ 918 for (i = 0; i < 7; i++) { 919 if ((1 << i) < interval && 920 (1 << (i + 1) > interval)) 921 time = 1 << i; 922 } 923 } 924 } 925 926 return time; 927 } 928 929 static unsigned long get_timer_interval(struct urb *urb, __u8 interval) 930 { 931 __u8 i; 932 unsigned long time = 1; 933 934 if (usb_pipeisoc(urb->pipe)) 935 return 0; 936 937 if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) { 938 for (i = 0; i < (interval - 1); i++) 939 time *= 2; 940 time = time * 125 / 1000; /* uSOF -> msec */ 941 } else { 942 time = interval; 943 } 944 945 return time; 946 } 947 948 /* this function must be called with interrupt disabled */ 949 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb, 950 struct usb_host_endpoint *hep, 951 struct usb_endpoint_descriptor *ep) 952 { 953 struct r8a66597_pipe_info info; 954 955 info.pipenum = get_empty_pipenum(r8a66597, ep); 956 info.address = get_urb_to_r8a66597_addr(r8a66597, urb); 957 info.epnum = usb_endpoint_num(ep); 958 info.maxpacket = usb_endpoint_maxp(ep); 959 info.type = get_r8a66597_type(usb_endpoint_type(ep)); 960 info.bufnum = get_bufnum(info.pipenum); 961 info.buf_bsize = get_buf_bsize(info.pipenum); 962 if (info.type == R8A66597_BULK) { 963 info.interval = 0; 964 info.timer_interval = 0; 965 } else { 966 info.interval = get_interval(urb, ep->bInterval); 967 info.timer_interval = get_timer_interval(urb, ep->bInterval); 968 } 969 if (usb_endpoint_dir_in(ep)) 970 info.dir_in = 1; 971 else 972 info.dir_in = 0; 973 974 enable_r8a66597_pipe(r8a66597, urb, hep, &info); 975 } 976 977 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 978 { 979 struct r8a66597_device *dev; 980 981 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 982 dev->state = USB_STATE_CONFIGURED; 983 } 984 985 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb, 986 u16 pipenum) 987 { 988 if (pipenum == 0 && usb_pipeout(urb->pipe)) 989 enable_irq_empty(r8a66597, pipenum); 990 else 991 enable_irq_ready(r8a66597, pipenum); 992 993 if (!usb_pipeisoc(urb->pipe)) 994 enable_irq_nrdy(r8a66597, pipenum); 995 } 996 997 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum) 998 { 999 disable_irq_ready(r8a66597, pipenum); 1000 disable_irq_nrdy(r8a66597, pipenum); 1001 } 1002 1003 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597) 1004 { 1005 mod_timer(&r8a66597->rh_timer, 1006 jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME)); 1007 } 1008 1009 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port, 1010 int connect) 1011 { 1012 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1013 1014 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1015 rh->scount = R8A66597_MAX_SAMPLING; 1016 if (connect) 1017 rh->port |= USB_PORT_STAT_CONNECTION; 1018 else 1019 rh->port &= ~USB_PORT_STAT_CONNECTION; 1020 rh->port |= USB_PORT_STAT_C_CONNECTION << 16; 1021 1022 r8a66597_root_hub_start_polling(r8a66597); 1023 } 1024 1025 /* this function must be called with interrupt disabled */ 1026 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port, 1027 u16 syssts) 1028 __releases(r8a66597->lock) 1029 __acquires(r8a66597->lock) 1030 { 1031 if (syssts == SE0) { 1032 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1033 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1034 } else { 1035 if (syssts == FS_JSTS) 1036 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 1037 else if (syssts == LS_JSTS) 1038 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 1039 1040 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port)); 1041 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port)); 1042 1043 if (r8a66597->bus_suspended) 1044 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1045 } 1046 1047 spin_unlock(&r8a66597->lock); 1048 usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597)); 1049 spin_lock(&r8a66597->lock); 1050 } 1051 1052 /* this function must be called with interrupt disabled */ 1053 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port) 1054 { 1055 u16 speed = get_rh_usb_speed(r8a66597, port); 1056 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1057 1058 rh->port &= ~(USB_PORT_STAT_HIGH_SPEED | USB_PORT_STAT_LOW_SPEED); 1059 if (speed == HSMODE) 1060 rh->port |= USB_PORT_STAT_HIGH_SPEED; 1061 else if (speed == LSMODE) 1062 rh->port |= USB_PORT_STAT_LOW_SPEED; 1063 1064 rh->port &= ~USB_PORT_STAT_RESET; 1065 rh->port |= USB_PORT_STAT_ENABLE; 1066 } 1067 1068 /* this function must be called with interrupt disabled */ 1069 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port) 1070 { 1071 struct r8a66597_device *dev = r8a66597->root_hub[port].dev; 1072 1073 disable_r8a66597_pipe_all(r8a66597, dev); 1074 free_usb_address(r8a66597, dev, 0); 1075 1076 start_root_hub_sampling(r8a66597, port, 0); 1077 } 1078 1079 /* this function must be called with interrupt disabled */ 1080 static void prepare_setup_packet(struct r8a66597 *r8a66597, 1081 struct r8a66597_td *td) 1082 { 1083 int i; 1084 __le16 *p = (__le16 *)td->urb->setup_packet; 1085 unsigned long setup_addr = USBREQ; 1086 1087 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket, 1088 DCPMAXP); 1089 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1); 1090 1091 for (i = 0; i < 4; i++) { 1092 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr); 1093 setup_addr += 2; 1094 } 1095 r8a66597_write(r8a66597, SUREQ, DCPCTR); 1096 } 1097 1098 /* this function must be called with interrupt disabled */ 1099 static void prepare_packet_read(struct r8a66597 *r8a66597, 1100 struct r8a66597_td *td) 1101 { 1102 struct urb *urb = td->urb; 1103 1104 if (usb_pipecontrol(urb->pipe)) { 1105 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1106 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1107 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1108 if (urb->actual_length == 0) { 1109 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1110 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1111 } 1112 pipe_irq_disable(r8a66597, td->pipenum); 1113 pipe_start(r8a66597, td->pipe); 1114 pipe_irq_enable(r8a66597, urb, td->pipenum); 1115 } else { 1116 if (urb->actual_length == 0) { 1117 pipe_irq_disable(r8a66597, td->pipenum); 1118 pipe_setting(r8a66597, td); 1119 pipe_stop(r8a66597, td->pipe); 1120 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1121 1122 if (td->pipe->pipetre) { 1123 r8a66597_write(r8a66597, TRCLR, 1124 td->pipe->pipetre); 1125 r8a66597_write(r8a66597, 1126 DIV_ROUND_UP 1127 (urb->transfer_buffer_length, 1128 td->maxpacket), 1129 td->pipe->pipetrn); 1130 r8a66597_bset(r8a66597, TRENB, 1131 td->pipe->pipetre); 1132 } 1133 1134 pipe_start(r8a66597, td->pipe); 1135 pipe_irq_enable(r8a66597, urb, td->pipenum); 1136 } 1137 } 1138 } 1139 1140 /* this function must be called with interrupt disabled */ 1141 static void prepare_packet_write(struct r8a66597 *r8a66597, 1142 struct r8a66597_td *td) 1143 { 1144 u16 tmp; 1145 struct urb *urb = td->urb; 1146 1147 if (usb_pipecontrol(urb->pipe)) { 1148 pipe_stop(r8a66597, td->pipe); 1149 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1150 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1151 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1152 if (urb->actual_length == 0) { 1153 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1154 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1155 } 1156 } else { 1157 if (urb->actual_length == 0) 1158 pipe_setting(r8a66597, td); 1159 if (td->pipe->pipetre) 1160 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre); 1161 } 1162 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1163 1164 fifo_change_from_pipe(r8a66597, td->pipe); 1165 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1166 if (unlikely((tmp & FRDY) == 0)) 1167 pipe_irq_enable(r8a66597, urb, td->pipenum); 1168 else 1169 packet_write(r8a66597, td->pipenum); 1170 pipe_start(r8a66597, td->pipe); 1171 } 1172 1173 /* this function must be called with interrupt disabled */ 1174 static void prepare_status_packet(struct r8a66597 *r8a66597, 1175 struct r8a66597_td *td) 1176 { 1177 struct urb *urb = td->urb; 1178 1179 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1180 pipe_stop(r8a66597, td->pipe); 1181 1182 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) { 1183 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1184 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1185 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1186 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); 1187 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR); 1188 enable_irq_empty(r8a66597, 0); 1189 } else { 1190 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1191 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1192 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1193 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1194 enable_irq_ready(r8a66597, 0); 1195 } 1196 enable_irq_nrdy(r8a66597, 0); 1197 pipe_start(r8a66597, td->pipe); 1198 } 1199 1200 static int is_set_address(unsigned char *setup_packet) 1201 { 1202 if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) && 1203 setup_packet[1] == USB_REQ_SET_ADDRESS) 1204 return 1; 1205 else 1206 return 0; 1207 } 1208 1209 /* this function must be called with interrupt disabled */ 1210 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1211 { 1212 BUG_ON(!td); 1213 1214 switch (td->type) { 1215 case USB_PID_SETUP: 1216 if (is_set_address(td->urb->setup_packet)) { 1217 td->set_address = 1; 1218 td->urb->setup_packet[2] = alloc_usb_address(r8a66597, 1219 td->urb); 1220 if (td->urb->setup_packet[2] == 0) 1221 return -EPIPE; 1222 } 1223 prepare_setup_packet(r8a66597, td); 1224 break; 1225 case USB_PID_IN: 1226 prepare_packet_read(r8a66597, td); 1227 break; 1228 case USB_PID_OUT: 1229 prepare_packet_write(r8a66597, td); 1230 break; 1231 case USB_PID_ACK: 1232 prepare_status_packet(r8a66597, td); 1233 break; 1234 default: 1235 printk(KERN_ERR "r8a66597: invalid type.\n"); 1236 break; 1237 } 1238 1239 return 0; 1240 } 1241 1242 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb) 1243 { 1244 if (usb_pipeisoc(urb->pipe)) { 1245 if (urb->number_of_packets == td->iso_cnt) 1246 return 1; 1247 } 1248 1249 /* control or bulk or interrupt */ 1250 if ((urb->transfer_buffer_length <= urb->actual_length) || 1251 (td->short_packet) || (td->zero_packet)) 1252 return 1; 1253 1254 return 0; 1255 } 1256 1257 /* this function must be called with interrupt disabled */ 1258 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1259 { 1260 unsigned long time; 1261 1262 BUG_ON(!td); 1263 1264 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) && 1265 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) { 1266 r8a66597->timeout_map |= 1 << td->pipenum; 1267 switch (usb_pipetype(td->urb->pipe)) { 1268 case PIPE_INTERRUPT: 1269 case PIPE_ISOCHRONOUS: 1270 time = 30; 1271 break; 1272 default: 1273 time = 300; 1274 break; 1275 } 1276 1277 mod_timer(&r8a66597->td_timer[td->pipenum], 1278 jiffies + msecs_to_jiffies(time)); 1279 } 1280 } 1281 1282 /* this function must be called with interrupt disabled */ 1283 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td, 1284 u16 pipenum, struct urb *urb, int status) 1285 __releases(r8a66597->lock) __acquires(r8a66597->lock) 1286 { 1287 int restart = 0; 1288 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 1289 1290 r8a66597->timeout_map &= ~(1 << pipenum); 1291 1292 if (likely(td)) { 1293 if (td->set_address && (status != 0 || urb->unlinked)) 1294 r8a66597->address_map &= ~(1 << urb->setup_packet[2]); 1295 1296 pipe_toggle_save(r8a66597, td->pipe, urb); 1297 list_del(&td->queue); 1298 kfree(td); 1299 } 1300 1301 if (!list_empty(&r8a66597->pipe_queue[pipenum])) 1302 restart = 1; 1303 1304 if (likely(urb)) { 1305 if (usb_pipeisoc(urb->pipe)) 1306 urb->start_frame = r8a66597_get_frame(hcd); 1307 1308 r8a66597_urb_done(r8a66597, urb, status); 1309 } 1310 1311 if (restart) { 1312 td = r8a66597_get_td(r8a66597, pipenum); 1313 if (unlikely(!td)) 1314 return; 1315 1316 start_transfer(r8a66597, td); 1317 set_td_timer(r8a66597, td); 1318 } 1319 } 1320 1321 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) 1322 { 1323 u16 tmp; 1324 int rcv_len, bufsize, urb_len, size; 1325 u16 *buf; 1326 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1327 struct urb *urb; 1328 int finish = 0; 1329 int status = 0; 1330 1331 if (unlikely(!td)) 1332 return; 1333 urb = td->urb; 1334 1335 fifo_change_from_pipe(r8a66597, td->pipe); 1336 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1337 if (unlikely((tmp & FRDY) == 0)) { 1338 pipe_stop(r8a66597, td->pipe); 1339 pipe_irq_disable(r8a66597, pipenum); 1340 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum); 1341 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE); 1342 return; 1343 } 1344 1345 /* prepare parameters */ 1346 rcv_len = tmp & DTLN; 1347 if (usb_pipeisoc(urb->pipe)) { 1348 buf = (u16 *)(urb->transfer_buffer + 1349 urb->iso_frame_desc[td->iso_cnt].offset); 1350 urb_len = urb->iso_frame_desc[td->iso_cnt].length; 1351 } else { 1352 buf = (void *)urb->transfer_buffer + urb->actual_length; 1353 urb_len = urb->transfer_buffer_length - urb->actual_length; 1354 } 1355 bufsize = min(urb_len, (int) td->maxpacket); 1356 if (rcv_len <= bufsize) { 1357 size = rcv_len; 1358 } else { 1359 size = bufsize; 1360 status = -EOVERFLOW; 1361 finish = 1; 1362 } 1363 1364 /* update parameters */ 1365 urb->actual_length += size; 1366 if (rcv_len == 0) 1367 td->zero_packet = 1; 1368 if (rcv_len < bufsize) { 1369 td->short_packet = 1; 1370 } 1371 if (usb_pipeisoc(urb->pipe)) { 1372 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1373 urb->iso_frame_desc[td->iso_cnt].status = status; 1374 td->iso_cnt++; 1375 finish = 0; 1376 } 1377 1378 /* check transfer finish */ 1379 if (finish || check_transfer_finish(td, urb)) { 1380 pipe_stop(r8a66597, td->pipe); 1381 pipe_irq_disable(r8a66597, pipenum); 1382 finish = 1; 1383 } 1384 1385 /* read fifo */ 1386 if (urb->transfer_buffer) { 1387 if (size == 0) 1388 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr); 1389 else 1390 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr, 1391 buf, size); 1392 } 1393 1394 if (finish && pipenum != 0) 1395 finish_request(r8a66597, td, pipenum, urb, status); 1396 } 1397 1398 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum) 1399 { 1400 u16 tmp; 1401 int bufsize, size; 1402 u16 *buf; 1403 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1404 struct urb *urb; 1405 1406 if (unlikely(!td)) 1407 return; 1408 urb = td->urb; 1409 1410 fifo_change_from_pipe(r8a66597, td->pipe); 1411 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1412 if (unlikely((tmp & FRDY) == 0)) { 1413 pipe_stop(r8a66597, td->pipe); 1414 pipe_irq_disable(r8a66597, pipenum); 1415 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum); 1416 finish_request(r8a66597, td, pipenum, urb, -EPIPE); 1417 return; 1418 } 1419 1420 /* prepare parameters */ 1421 bufsize = td->maxpacket; 1422 if (usb_pipeisoc(urb->pipe)) { 1423 buf = (u16 *)(urb->transfer_buffer + 1424 urb->iso_frame_desc[td->iso_cnt].offset); 1425 size = min(bufsize, 1426 (int)urb->iso_frame_desc[td->iso_cnt].length); 1427 } else { 1428 buf = (u16 *)(urb->transfer_buffer + urb->actual_length); 1429 size = min_t(u32, bufsize, 1430 urb->transfer_buffer_length - urb->actual_length); 1431 } 1432 1433 /* write fifo */ 1434 if (pipenum > 0) 1435 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS); 1436 if (urb->transfer_buffer) { 1437 r8a66597_write_fifo(r8a66597, td->pipe, buf, size); 1438 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size) 1439 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr); 1440 } 1441 1442 /* update parameters */ 1443 urb->actual_length += size; 1444 if (usb_pipeisoc(urb->pipe)) { 1445 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1446 urb->iso_frame_desc[td->iso_cnt].status = 0; 1447 td->iso_cnt++; 1448 } 1449 1450 /* check transfer finish */ 1451 if (check_transfer_finish(td, urb)) { 1452 disable_irq_ready(r8a66597, pipenum); 1453 enable_irq_empty(r8a66597, pipenum); 1454 if (!usb_pipeisoc(urb->pipe)) 1455 enable_irq_nrdy(r8a66597, pipenum); 1456 } else 1457 pipe_irq_enable(r8a66597, urb, pipenum); 1458 } 1459 1460 1461 static void check_next_phase(struct r8a66597 *r8a66597, int status) 1462 { 1463 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0); 1464 struct urb *urb; 1465 u8 finish = 0; 1466 1467 if (unlikely(!td)) 1468 return; 1469 urb = td->urb; 1470 1471 switch (td->type) { 1472 case USB_PID_IN: 1473 case USB_PID_OUT: 1474 if (check_transfer_finish(td, urb)) 1475 td->type = USB_PID_ACK; 1476 break; 1477 case USB_PID_SETUP: 1478 if (urb->transfer_buffer_length == urb->actual_length) 1479 td->type = USB_PID_ACK; 1480 else if (usb_pipeout(urb->pipe)) 1481 td->type = USB_PID_OUT; 1482 else 1483 td->type = USB_PID_IN; 1484 break; 1485 case USB_PID_ACK: 1486 finish = 1; 1487 break; 1488 } 1489 1490 if (finish || status != 0 || urb->unlinked) 1491 finish_request(r8a66597, td, 0, urb, status); 1492 else 1493 start_transfer(r8a66597, td); 1494 } 1495 1496 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum) 1497 { 1498 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1499 1500 if (td) { 1501 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID; 1502 1503 if (pid == PID_NAK) 1504 return -ECONNRESET; 1505 else 1506 return -EPIPE; 1507 } 1508 return 0; 1509 } 1510 1511 static void irq_pipe_ready(struct r8a66597 *r8a66597) 1512 { 1513 u16 check; 1514 u16 pipenum; 1515 u16 mask; 1516 struct r8a66597_td *td; 1517 1518 mask = r8a66597_read(r8a66597, BRDYSTS) 1519 & r8a66597_read(r8a66597, BRDYENB); 1520 r8a66597_write(r8a66597, ~mask, BRDYSTS); 1521 if (mask & BRDY0) { 1522 td = r8a66597_get_td(r8a66597, 0); 1523 if (td && td->type == USB_PID_IN) 1524 packet_read(r8a66597, 0); 1525 else 1526 pipe_irq_disable(r8a66597, 0); 1527 check_next_phase(r8a66597, 0); 1528 } 1529 1530 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1531 check = 1 << pipenum; 1532 if (mask & check) { 1533 td = r8a66597_get_td(r8a66597, pipenum); 1534 if (unlikely(!td)) 1535 continue; 1536 1537 if (td->type == USB_PID_IN) 1538 packet_read(r8a66597, pipenum); 1539 else if (td->type == USB_PID_OUT) 1540 packet_write(r8a66597, pipenum); 1541 } 1542 } 1543 } 1544 1545 static void irq_pipe_empty(struct r8a66597 *r8a66597) 1546 { 1547 u16 tmp; 1548 u16 check; 1549 u16 pipenum; 1550 u16 mask; 1551 struct r8a66597_td *td; 1552 1553 mask = r8a66597_read(r8a66597, BEMPSTS) 1554 & r8a66597_read(r8a66597, BEMPENB); 1555 r8a66597_write(r8a66597, ~mask, BEMPSTS); 1556 if (mask & BEMP0) { 1557 cfifo_change(r8a66597, 0); 1558 td = r8a66597_get_td(r8a66597, 0); 1559 if (td && td->type != USB_PID_OUT) 1560 disable_irq_empty(r8a66597, 0); 1561 check_next_phase(r8a66597, 0); 1562 } 1563 1564 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1565 check = 1 << pipenum; 1566 if (mask & check) { 1567 struct r8a66597_td *td; 1568 td = r8a66597_get_td(r8a66597, pipenum); 1569 if (unlikely(!td)) 1570 continue; 1571 1572 tmp = r8a66597_read(r8a66597, td->pipe->pipectr); 1573 if ((tmp & INBUFM) == 0) { 1574 disable_irq_empty(r8a66597, pipenum); 1575 pipe_irq_disable(r8a66597, pipenum); 1576 finish_request(r8a66597, td, pipenum, td->urb, 1577 0); 1578 } 1579 } 1580 } 1581 } 1582 1583 static void irq_pipe_nrdy(struct r8a66597 *r8a66597) 1584 { 1585 u16 check; 1586 u16 pipenum; 1587 u16 mask; 1588 int status; 1589 1590 mask = r8a66597_read(r8a66597, NRDYSTS) 1591 & r8a66597_read(r8a66597, NRDYENB); 1592 r8a66597_write(r8a66597, ~mask, NRDYSTS); 1593 if (mask & NRDY0) { 1594 cfifo_change(r8a66597, 0); 1595 status = get_urb_error(r8a66597, 0); 1596 pipe_irq_disable(r8a66597, 0); 1597 check_next_phase(r8a66597, status); 1598 } 1599 1600 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1601 check = 1 << pipenum; 1602 if (mask & check) { 1603 struct r8a66597_td *td; 1604 td = r8a66597_get_td(r8a66597, pipenum); 1605 if (unlikely(!td)) 1606 continue; 1607 1608 status = get_urb_error(r8a66597, pipenum); 1609 pipe_irq_disable(r8a66597, pipenum); 1610 pipe_stop(r8a66597, td->pipe); 1611 finish_request(r8a66597, td, pipenum, td->urb, status); 1612 } 1613 } 1614 } 1615 1616 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd) 1617 { 1618 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1619 u16 intsts0, intsts1, intsts2; 1620 u16 intenb0, intenb1, intenb2; 1621 u16 mask0, mask1, mask2; 1622 int status; 1623 1624 spin_lock(&r8a66597->lock); 1625 1626 intsts0 = r8a66597_read(r8a66597, INTSTS0); 1627 intsts1 = r8a66597_read(r8a66597, INTSTS1); 1628 intsts2 = r8a66597_read(r8a66597, INTSTS2); 1629 intenb0 = r8a66597_read(r8a66597, INTENB0); 1630 intenb1 = r8a66597_read(r8a66597, INTENB1); 1631 intenb2 = r8a66597_read(r8a66597, INTENB2); 1632 1633 mask2 = intsts2 & intenb2; 1634 mask1 = intsts1 & intenb1; 1635 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY); 1636 if (mask2) { 1637 if (mask2 & ATTCH) { 1638 r8a66597_write(r8a66597, ~ATTCH, INTSTS2); 1639 r8a66597_bclr(r8a66597, ATTCHE, INTENB2); 1640 1641 /* start usb bus sampling */ 1642 start_root_hub_sampling(r8a66597, 1, 1); 1643 } 1644 if (mask2 & DTCH) { 1645 r8a66597_write(r8a66597, ~DTCH, INTSTS2); 1646 r8a66597_bclr(r8a66597, DTCHE, INTENB2); 1647 r8a66597_usb_disconnect(r8a66597, 1); 1648 } 1649 if (mask2 & BCHG) { 1650 r8a66597_write(r8a66597, ~BCHG, INTSTS2); 1651 r8a66597_bclr(r8a66597, BCHGE, INTENB2); 1652 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1653 } 1654 } 1655 1656 if (mask1) { 1657 if (mask1 & ATTCH) { 1658 r8a66597_write(r8a66597, ~ATTCH, INTSTS1); 1659 r8a66597_bclr(r8a66597, ATTCHE, INTENB1); 1660 1661 /* start usb bus sampling */ 1662 start_root_hub_sampling(r8a66597, 0, 1); 1663 } 1664 if (mask1 & DTCH) { 1665 r8a66597_write(r8a66597, ~DTCH, INTSTS1); 1666 r8a66597_bclr(r8a66597, DTCHE, INTENB1); 1667 r8a66597_usb_disconnect(r8a66597, 0); 1668 } 1669 if (mask1 & BCHG) { 1670 r8a66597_write(r8a66597, ~BCHG, INTSTS1); 1671 r8a66597_bclr(r8a66597, BCHGE, INTENB1); 1672 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1673 } 1674 1675 if (mask1 & SIGN) { 1676 r8a66597_write(r8a66597, ~SIGN, INTSTS1); 1677 status = get_urb_error(r8a66597, 0); 1678 check_next_phase(r8a66597, status); 1679 } 1680 if (mask1 & SACK) { 1681 r8a66597_write(r8a66597, ~SACK, INTSTS1); 1682 check_next_phase(r8a66597, 0); 1683 } 1684 } 1685 if (mask0) { 1686 if (mask0 & BRDY) 1687 irq_pipe_ready(r8a66597); 1688 if (mask0 & BEMP) 1689 irq_pipe_empty(r8a66597); 1690 if (mask0 & NRDY) 1691 irq_pipe_nrdy(r8a66597); 1692 } 1693 1694 spin_unlock(&r8a66597->lock); 1695 return IRQ_HANDLED; 1696 } 1697 1698 /* this function must be called with interrupt disabled */ 1699 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port) 1700 { 1701 u16 tmp; 1702 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1703 1704 if (rh->port & USB_PORT_STAT_RESET) { 1705 unsigned long dvstctr_reg = get_dvstctr_reg(port); 1706 1707 tmp = r8a66597_read(r8a66597, dvstctr_reg); 1708 if ((tmp & USBRST) == USBRST) { 1709 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, 1710 dvstctr_reg); 1711 r8a66597_root_hub_start_polling(r8a66597); 1712 } else 1713 r8a66597_usb_connect(r8a66597, port); 1714 } 1715 1716 if (!(rh->port & USB_PORT_STAT_CONNECTION)) { 1717 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1718 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1719 } 1720 1721 if (rh->scount > 0) { 1722 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1723 if (tmp == rh->old_syssts) { 1724 rh->scount--; 1725 if (rh->scount == 0) 1726 r8a66597_check_syssts(r8a66597, port, tmp); 1727 else 1728 r8a66597_root_hub_start_polling(r8a66597); 1729 } else { 1730 rh->scount = R8A66597_MAX_SAMPLING; 1731 rh->old_syssts = tmp; 1732 r8a66597_root_hub_start_polling(r8a66597); 1733 } 1734 } 1735 } 1736 1737 static void r8a66597_interval_timer(unsigned long _r8a66597) 1738 { 1739 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1740 unsigned long flags; 1741 u16 pipenum; 1742 struct r8a66597_td *td; 1743 1744 spin_lock_irqsave(&r8a66597->lock, flags); 1745 1746 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1747 if (!(r8a66597->interval_map & (1 << pipenum))) 1748 continue; 1749 if (timer_pending(&r8a66597->interval_timer[pipenum])) 1750 continue; 1751 1752 td = r8a66597_get_td(r8a66597, pipenum); 1753 if (td) 1754 start_transfer(r8a66597, td); 1755 } 1756 1757 spin_unlock_irqrestore(&r8a66597->lock, flags); 1758 } 1759 1760 static void r8a66597_td_timer(unsigned long _r8a66597) 1761 { 1762 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1763 unsigned long flags; 1764 u16 pipenum; 1765 struct r8a66597_td *td, *new_td = NULL; 1766 struct r8a66597_pipe *pipe; 1767 1768 spin_lock_irqsave(&r8a66597->lock, flags); 1769 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1770 if (!(r8a66597->timeout_map & (1 << pipenum))) 1771 continue; 1772 if (timer_pending(&r8a66597->td_timer[pipenum])) 1773 continue; 1774 1775 td = r8a66597_get_td(r8a66597, pipenum); 1776 if (!td) { 1777 r8a66597->timeout_map &= ~(1 << pipenum); 1778 continue; 1779 } 1780 1781 if (td->urb->actual_length) { 1782 set_td_timer(r8a66597, td); 1783 break; 1784 } 1785 1786 pipe = td->pipe; 1787 pipe_stop(r8a66597, pipe); 1788 1789 new_td = td; 1790 do { 1791 list_move_tail(&new_td->queue, 1792 &r8a66597->pipe_queue[pipenum]); 1793 new_td = r8a66597_get_td(r8a66597, pipenum); 1794 if (!new_td) { 1795 new_td = td; 1796 break; 1797 } 1798 } while (td != new_td && td->address == new_td->address); 1799 1800 start_transfer(r8a66597, new_td); 1801 1802 if (td == new_td) 1803 r8a66597->timeout_map &= ~(1 << pipenum); 1804 else 1805 set_td_timer(r8a66597, new_td); 1806 break; 1807 } 1808 spin_unlock_irqrestore(&r8a66597->lock, flags); 1809 } 1810 1811 static void r8a66597_timer(unsigned long _r8a66597) 1812 { 1813 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1814 unsigned long flags; 1815 int port; 1816 1817 spin_lock_irqsave(&r8a66597->lock, flags); 1818 1819 for (port = 0; port < r8a66597->max_root_hub; port++) 1820 r8a66597_root_hub_control(r8a66597, port); 1821 1822 spin_unlock_irqrestore(&r8a66597->lock, flags); 1823 } 1824 1825 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 1826 { 1827 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 1828 1829 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED && 1830 (urb->dev->state == USB_STATE_CONFIGURED)) 1831 return 1; 1832 else 1833 return 0; 1834 } 1835 1836 static int r8a66597_start(struct usb_hcd *hcd) 1837 { 1838 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1839 1840 hcd->state = HC_STATE_RUNNING; 1841 return enable_controller(r8a66597); 1842 } 1843 1844 static void r8a66597_stop(struct usb_hcd *hcd) 1845 { 1846 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1847 1848 disable_controller(r8a66597); 1849 } 1850 1851 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb) 1852 { 1853 unsigned int usb_address = usb_pipedevice(urb->pipe); 1854 u16 root_port, hub_port; 1855 1856 if (usb_address == 0) { 1857 get_port_number(r8a66597, urb->dev->devpath, 1858 &root_port, &hub_port); 1859 set_devadd_reg(r8a66597, 0, 1860 get_r8a66597_usb_speed(urb->dev->speed), 1861 get_parent_r8a66597_address(r8a66597, urb->dev), 1862 hub_port, root_port); 1863 } 1864 } 1865 1866 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597, 1867 struct urb *urb, 1868 struct usb_host_endpoint *hep) 1869 { 1870 struct r8a66597_td *td; 1871 u16 pipenum; 1872 1873 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC); 1874 if (td == NULL) 1875 return NULL; 1876 1877 pipenum = r8a66597_get_pipenum(urb, hep); 1878 td->pipenum = pipenum; 1879 td->pipe = hep->hcpriv; 1880 td->urb = urb; 1881 td->address = get_urb_to_r8a66597_addr(r8a66597, urb); 1882 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe, 1883 !usb_pipein(urb->pipe)); 1884 if (usb_pipecontrol(urb->pipe)) 1885 td->type = USB_PID_SETUP; 1886 else if (usb_pipein(urb->pipe)) 1887 td->type = USB_PID_IN; 1888 else 1889 td->type = USB_PID_OUT; 1890 INIT_LIST_HEAD(&td->queue); 1891 1892 return td; 1893 } 1894 1895 static int r8a66597_urb_enqueue(struct usb_hcd *hcd, 1896 struct urb *urb, 1897 gfp_t mem_flags) 1898 { 1899 struct usb_host_endpoint *hep = urb->ep; 1900 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1901 struct r8a66597_td *td = NULL; 1902 int ret, request = 0; 1903 unsigned long flags; 1904 1905 spin_lock_irqsave(&r8a66597->lock, flags); 1906 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) { 1907 ret = -ENODEV; 1908 goto error_not_linked; 1909 } 1910 1911 ret = usb_hcd_link_urb_to_ep(hcd, urb); 1912 if (ret) 1913 goto error_not_linked; 1914 1915 if (!hep->hcpriv) { 1916 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), 1917 GFP_ATOMIC); 1918 if (!hep->hcpriv) { 1919 ret = -ENOMEM; 1920 goto error; 1921 } 1922 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA); 1923 if (usb_pipeendpoint(urb->pipe)) 1924 init_pipe_info(r8a66597, urb, hep, &hep->desc); 1925 } 1926 1927 if (unlikely(check_pipe_config(r8a66597, urb))) 1928 init_pipe_config(r8a66597, urb); 1929 1930 set_address_zero(r8a66597, urb); 1931 td = r8a66597_make_td(r8a66597, urb, hep); 1932 if (td == NULL) { 1933 ret = -ENOMEM; 1934 goto error; 1935 } 1936 if (list_empty(&r8a66597->pipe_queue[td->pipenum])) 1937 request = 1; 1938 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]); 1939 urb->hcpriv = td; 1940 1941 if (request) { 1942 if (td->pipe->info.timer_interval) { 1943 r8a66597->interval_map |= 1 << td->pipenum; 1944 mod_timer(&r8a66597->interval_timer[td->pipenum], 1945 jiffies + msecs_to_jiffies( 1946 td->pipe->info.timer_interval)); 1947 } else { 1948 ret = start_transfer(r8a66597, td); 1949 if (ret < 0) { 1950 list_del(&td->queue); 1951 kfree(td); 1952 } 1953 } 1954 } else 1955 set_td_timer(r8a66597, td); 1956 1957 error: 1958 if (ret) 1959 usb_hcd_unlink_urb_from_ep(hcd, urb); 1960 error_not_linked: 1961 spin_unlock_irqrestore(&r8a66597->lock, flags); 1962 return ret; 1963 } 1964 1965 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, 1966 int status) 1967 { 1968 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1969 struct r8a66597_td *td; 1970 unsigned long flags; 1971 int rc; 1972 1973 spin_lock_irqsave(&r8a66597->lock, flags); 1974 rc = usb_hcd_check_unlink_urb(hcd, urb, status); 1975 if (rc) 1976 goto done; 1977 1978 if (urb->hcpriv) { 1979 td = urb->hcpriv; 1980 pipe_stop(r8a66597, td->pipe); 1981 pipe_irq_disable(r8a66597, td->pipenum); 1982 disable_irq_empty(r8a66597, td->pipenum); 1983 finish_request(r8a66597, td, td->pipenum, urb, status); 1984 } 1985 done: 1986 spin_unlock_irqrestore(&r8a66597->lock, flags); 1987 return rc; 1988 } 1989 1990 static void r8a66597_endpoint_disable(struct usb_hcd *hcd, 1991 struct usb_host_endpoint *hep) 1992 { 1993 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1994 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv; 1995 struct r8a66597_td *td; 1996 struct urb *urb = NULL; 1997 u16 pipenum; 1998 unsigned long flags; 1999 2000 if (pipe == NULL) 2001 return; 2002 pipenum = pipe->info.pipenum; 2003 2004 if (pipenum == 0) { 2005 kfree(hep->hcpriv); 2006 hep->hcpriv = NULL; 2007 return; 2008 } 2009 2010 spin_lock_irqsave(&r8a66597->lock, flags); 2011 pipe_stop(r8a66597, pipe); 2012 pipe_irq_disable(r8a66597, pipenum); 2013 disable_irq_empty(r8a66597, pipenum); 2014 td = r8a66597_get_td(r8a66597, pipenum); 2015 if (td) 2016 urb = td->urb; 2017 finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN); 2018 kfree(hep->hcpriv); 2019 hep->hcpriv = NULL; 2020 spin_unlock_irqrestore(&r8a66597->lock, flags); 2021 } 2022 2023 static int r8a66597_get_frame(struct usb_hcd *hcd) 2024 { 2025 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2026 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF; 2027 } 2028 2029 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map) 2030 { 2031 int chix; 2032 struct usb_device *childdev; 2033 2034 if (udev->state == USB_STATE_CONFIGURED && 2035 udev->parent && udev->parent->devnum > 1 && 2036 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB) 2037 map[udev->devnum/32] |= (1 << (udev->devnum % 32)); 2038 2039 usb_hub_for_each_child(udev, chix, childdev) 2040 collect_usb_address_map(childdev, map); 2041 } 2042 2043 /* this function must be called with interrupt disabled */ 2044 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597, 2045 int addr) 2046 { 2047 struct r8a66597_device *dev; 2048 struct list_head *list = &r8a66597->child_device; 2049 2050 list_for_each_entry(dev, list, device_list) { 2051 if (dev->usb_address != addr) 2052 continue; 2053 2054 return dev; 2055 } 2056 2057 printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr); 2058 return NULL; 2059 } 2060 2061 static void update_usb_address_map(struct r8a66597 *r8a66597, 2062 struct usb_device *root_hub, 2063 unsigned long *map) 2064 { 2065 int i, j, addr; 2066 unsigned long diff; 2067 unsigned long flags; 2068 2069 for (i = 0; i < 4; i++) { 2070 diff = r8a66597->child_connect_map[i] ^ map[i]; 2071 if (!diff) 2072 continue; 2073 2074 for (j = 0; j < 32; j++) { 2075 if (!(diff & (1 << j))) 2076 continue; 2077 2078 addr = i * 32 + j; 2079 if (map[i] & (1 << j)) 2080 set_child_connect_map(r8a66597, addr); 2081 else { 2082 struct r8a66597_device *dev; 2083 2084 spin_lock_irqsave(&r8a66597->lock, flags); 2085 dev = get_r8a66597_device(r8a66597, addr); 2086 disable_r8a66597_pipe_all(r8a66597, dev); 2087 free_usb_address(r8a66597, dev, 0); 2088 put_child_connect_map(r8a66597, addr); 2089 spin_unlock_irqrestore(&r8a66597->lock, flags); 2090 } 2091 } 2092 } 2093 } 2094 2095 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597, 2096 struct usb_hcd *hcd) 2097 { 2098 struct usb_bus *bus; 2099 unsigned long now_map[4]; 2100 2101 memset(now_map, 0, sizeof(now_map)); 2102 2103 list_for_each_entry(bus, &usb_bus_list, bus_list) { 2104 if (!bus->root_hub) 2105 continue; 2106 2107 if (bus->busnum != hcd->self.busnum) 2108 continue; 2109 2110 collect_usb_address_map(bus->root_hub, now_map); 2111 update_usb_address_map(r8a66597, bus->root_hub, now_map); 2112 } 2113 } 2114 2115 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf) 2116 { 2117 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2118 unsigned long flags; 2119 int i; 2120 2121 r8a66597_check_detect_child(r8a66597, hcd); 2122 2123 spin_lock_irqsave(&r8a66597->lock, flags); 2124 2125 *buf = 0; /* initialize (no change) */ 2126 2127 for (i = 0; i < r8a66597->max_root_hub; i++) { 2128 if (r8a66597->root_hub[i].port & 0xffff0000) 2129 *buf |= 1 << (i + 1); 2130 } 2131 2132 spin_unlock_irqrestore(&r8a66597->lock, flags); 2133 2134 return (*buf != 0); 2135 } 2136 2137 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597, 2138 struct usb_hub_descriptor *desc) 2139 { 2140 desc->bDescriptorType = 0x29; 2141 desc->bHubContrCurrent = 0; 2142 desc->bNbrPorts = r8a66597->max_root_hub; 2143 desc->bDescLength = 9; 2144 desc->bPwrOn2PwrGood = 0; 2145 desc->wHubCharacteristics = cpu_to_le16(0x0011); 2146 desc->u.hs.DeviceRemovable[0] = 2147 ((1 << r8a66597->max_root_hub) - 1) << 1; 2148 desc->u.hs.DeviceRemovable[1] = ~0; 2149 } 2150 2151 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, 2152 u16 wIndex, char *buf, u16 wLength) 2153 { 2154 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2155 int ret; 2156 int port = (wIndex & 0x00FF) - 1; 2157 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2158 unsigned long flags; 2159 2160 ret = 0; 2161 2162 spin_lock_irqsave(&r8a66597->lock, flags); 2163 switch (typeReq) { 2164 case ClearHubFeature: 2165 case SetHubFeature: 2166 switch (wValue) { 2167 case C_HUB_OVER_CURRENT: 2168 case C_HUB_LOCAL_POWER: 2169 break; 2170 default: 2171 goto error; 2172 } 2173 break; 2174 case ClearPortFeature: 2175 if (wIndex > r8a66597->max_root_hub) 2176 goto error; 2177 if (wLength != 0) 2178 goto error; 2179 2180 switch (wValue) { 2181 case USB_PORT_FEAT_ENABLE: 2182 rh->port &= ~USB_PORT_STAT_POWER; 2183 break; 2184 case USB_PORT_FEAT_SUSPEND: 2185 break; 2186 case USB_PORT_FEAT_POWER: 2187 r8a66597_port_power(r8a66597, port, 0); 2188 break; 2189 case USB_PORT_FEAT_C_ENABLE: 2190 case USB_PORT_FEAT_C_SUSPEND: 2191 case USB_PORT_FEAT_C_CONNECTION: 2192 case USB_PORT_FEAT_C_OVER_CURRENT: 2193 case USB_PORT_FEAT_C_RESET: 2194 break; 2195 default: 2196 goto error; 2197 } 2198 rh->port &= ~(1 << wValue); 2199 break; 2200 case GetHubDescriptor: 2201 r8a66597_hub_descriptor(r8a66597, 2202 (struct usb_hub_descriptor *)buf); 2203 break; 2204 case GetHubStatus: 2205 *buf = 0x00; 2206 break; 2207 case GetPortStatus: 2208 if (wIndex > r8a66597->max_root_hub) 2209 goto error; 2210 *(__le32 *)buf = cpu_to_le32(rh->port); 2211 break; 2212 case SetPortFeature: 2213 if (wIndex > r8a66597->max_root_hub) 2214 goto error; 2215 if (wLength != 0) 2216 goto error; 2217 2218 switch (wValue) { 2219 case USB_PORT_FEAT_SUSPEND: 2220 break; 2221 case USB_PORT_FEAT_POWER: 2222 r8a66597_port_power(r8a66597, port, 1); 2223 rh->port |= USB_PORT_STAT_POWER; 2224 break; 2225 case USB_PORT_FEAT_RESET: { 2226 struct r8a66597_device *dev = rh->dev; 2227 2228 rh->port |= USB_PORT_STAT_RESET; 2229 2230 disable_r8a66597_pipe_all(r8a66597, dev); 2231 free_usb_address(r8a66597, dev, 1); 2232 2233 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, 2234 get_dvstctr_reg(port)); 2235 mod_timer(&r8a66597->rh_timer, 2236 jiffies + msecs_to_jiffies(50)); 2237 } 2238 break; 2239 default: 2240 goto error; 2241 } 2242 rh->port |= 1 << wValue; 2243 break; 2244 default: 2245 error: 2246 ret = -EPIPE; 2247 break; 2248 } 2249 2250 spin_unlock_irqrestore(&r8a66597->lock, flags); 2251 return ret; 2252 } 2253 2254 #if defined(CONFIG_PM) 2255 static int r8a66597_bus_suspend(struct usb_hcd *hcd) 2256 { 2257 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2258 int port; 2259 2260 dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__); 2261 2262 for (port = 0; port < r8a66597->max_root_hub; port++) { 2263 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2264 unsigned long dvstctr_reg = get_dvstctr_reg(port); 2265 2266 if (!(rh->port & USB_PORT_STAT_ENABLE)) 2267 continue; 2268 2269 dev_dbg(&rh->dev->udev->dev, "suspend port = %d\n", port); 2270 r8a66597_bclr(r8a66597, UACT, dvstctr_reg); /* suspend */ 2271 rh->port |= USB_PORT_STAT_SUSPEND; 2272 2273 if (rh->dev->udev->do_remote_wakeup) { 2274 msleep(3); /* waiting last SOF */ 2275 r8a66597_bset(r8a66597, RWUPE, dvstctr_reg); 2276 r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port)); 2277 r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port)); 2278 } 2279 } 2280 2281 r8a66597->bus_suspended = 1; 2282 2283 return 0; 2284 } 2285 2286 static int r8a66597_bus_resume(struct usb_hcd *hcd) 2287 { 2288 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2289 int port; 2290 2291 dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__); 2292 2293 for (port = 0; port < r8a66597->max_root_hub; port++) { 2294 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2295 unsigned long dvstctr_reg = get_dvstctr_reg(port); 2296 2297 if (!(rh->port & USB_PORT_STAT_SUSPEND)) 2298 continue; 2299 2300 dev_dbg(&rh->dev->udev->dev, "resume port = %d\n", port); 2301 rh->port &= ~USB_PORT_STAT_SUSPEND; 2302 rh->port |= USB_PORT_STAT_C_SUSPEND << 16; 2303 r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg); 2304 msleep(50); 2305 r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg); 2306 } 2307 2308 return 0; 2309 2310 } 2311 #else 2312 #define r8a66597_bus_suspend NULL 2313 #define r8a66597_bus_resume NULL 2314 #endif 2315 2316 static struct hc_driver r8a66597_hc_driver = { 2317 .description = hcd_name, 2318 .hcd_priv_size = sizeof(struct r8a66597), 2319 .irq = r8a66597_irq, 2320 2321 /* 2322 * generic hardware linkage 2323 */ 2324 .flags = HCD_USB2, 2325 2326 .start = r8a66597_start, 2327 .stop = r8a66597_stop, 2328 2329 /* 2330 * managing i/o requests and associated device resources 2331 */ 2332 .urb_enqueue = r8a66597_urb_enqueue, 2333 .urb_dequeue = r8a66597_urb_dequeue, 2334 .endpoint_disable = r8a66597_endpoint_disable, 2335 2336 /* 2337 * periodic schedule support 2338 */ 2339 .get_frame_number = r8a66597_get_frame, 2340 2341 /* 2342 * root hub support 2343 */ 2344 .hub_status_data = r8a66597_hub_status_data, 2345 .hub_control = r8a66597_hub_control, 2346 .bus_suspend = r8a66597_bus_suspend, 2347 .bus_resume = r8a66597_bus_resume, 2348 }; 2349 2350 #if defined(CONFIG_PM) 2351 static int r8a66597_suspend(struct device *dev) 2352 { 2353 struct r8a66597 *r8a66597 = dev_get_drvdata(dev); 2354 int port; 2355 2356 dev_dbg(dev, "%s\n", __func__); 2357 2358 disable_controller(r8a66597); 2359 2360 for (port = 0; port < r8a66597->max_root_hub; port++) { 2361 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2362 2363 rh->port = 0x00000000; 2364 } 2365 2366 return 0; 2367 } 2368 2369 static int r8a66597_resume(struct device *dev) 2370 { 2371 struct r8a66597 *r8a66597 = dev_get_drvdata(dev); 2372 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2373 2374 dev_dbg(dev, "%s\n", __func__); 2375 2376 enable_controller(r8a66597); 2377 usb_root_hub_lost_power(hcd->self.root_hub); 2378 2379 return 0; 2380 } 2381 2382 static const struct dev_pm_ops r8a66597_dev_pm_ops = { 2383 .suspend = r8a66597_suspend, 2384 .resume = r8a66597_resume, 2385 .poweroff = r8a66597_suspend, 2386 .restore = r8a66597_resume, 2387 }; 2388 2389 #define R8A66597_DEV_PM_OPS (&r8a66597_dev_pm_ops) 2390 #else /* if defined(CONFIG_PM) */ 2391 #define R8A66597_DEV_PM_OPS NULL 2392 #endif 2393 2394 static int r8a66597_remove(struct platform_device *pdev) 2395 { 2396 struct r8a66597 *r8a66597 = platform_get_drvdata(pdev); 2397 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2398 2399 del_timer_sync(&r8a66597->rh_timer); 2400 usb_remove_hcd(hcd); 2401 iounmap(r8a66597->reg); 2402 if (r8a66597->pdata->on_chip) 2403 clk_put(r8a66597->clk); 2404 usb_put_hcd(hcd); 2405 return 0; 2406 } 2407 2408 static int r8a66597_probe(struct platform_device *pdev) 2409 { 2410 char clk_name[8]; 2411 struct resource *res = NULL, *ires; 2412 int irq = -1; 2413 void __iomem *reg = NULL; 2414 struct usb_hcd *hcd = NULL; 2415 struct r8a66597 *r8a66597; 2416 int ret = 0; 2417 int i; 2418 unsigned long irq_trigger; 2419 2420 if (usb_disabled()) 2421 return -ENODEV; 2422 2423 if (pdev->dev.dma_mask) { 2424 ret = -EINVAL; 2425 dev_err(&pdev->dev, "dma not supported\n"); 2426 goto clean_up; 2427 } 2428 2429 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 2430 if (!res) { 2431 ret = -ENODEV; 2432 dev_err(&pdev->dev, "platform_get_resource error.\n"); 2433 goto clean_up; 2434 } 2435 2436 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 2437 if (!ires) { 2438 ret = -ENODEV; 2439 dev_err(&pdev->dev, 2440 "platform_get_resource IORESOURCE_IRQ error.\n"); 2441 goto clean_up; 2442 } 2443 2444 irq = ires->start; 2445 irq_trigger = ires->flags & IRQF_TRIGGER_MASK; 2446 2447 reg = ioremap(res->start, resource_size(res)); 2448 if (reg == NULL) { 2449 ret = -ENOMEM; 2450 dev_err(&pdev->dev, "ioremap error.\n"); 2451 goto clean_up; 2452 } 2453 2454 if (pdev->dev.platform_data == NULL) { 2455 dev_err(&pdev->dev, "no platform data\n"); 2456 ret = -ENODEV; 2457 goto clean_up; 2458 } 2459 2460 /* initialize hcd */ 2461 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name); 2462 if (!hcd) { 2463 ret = -ENOMEM; 2464 dev_err(&pdev->dev, "Failed to create hcd\n"); 2465 goto clean_up; 2466 } 2467 r8a66597 = hcd_to_r8a66597(hcd); 2468 memset(r8a66597, 0, sizeof(struct r8a66597)); 2469 platform_set_drvdata(pdev, r8a66597); 2470 r8a66597->pdata = dev_get_platdata(&pdev->dev); 2471 r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; 2472 2473 if (r8a66597->pdata->on_chip) { 2474 snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id); 2475 r8a66597->clk = clk_get(&pdev->dev, clk_name); 2476 if (IS_ERR(r8a66597->clk)) { 2477 dev_err(&pdev->dev, "cannot get clock \"%s\"\n", 2478 clk_name); 2479 ret = PTR_ERR(r8a66597->clk); 2480 goto clean_up2; 2481 } 2482 r8a66597->max_root_hub = 1; 2483 } else 2484 r8a66597->max_root_hub = 2; 2485 2486 spin_lock_init(&r8a66597->lock); 2487 init_timer(&r8a66597->rh_timer); 2488 r8a66597->rh_timer.function = r8a66597_timer; 2489 r8a66597->rh_timer.data = (unsigned long)r8a66597; 2490 r8a66597->reg = reg; 2491 2492 /* make sure no interrupts are pending */ 2493 ret = r8a66597_clock_enable(r8a66597); 2494 if (ret < 0) 2495 goto clean_up3; 2496 disable_controller(r8a66597); 2497 2498 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { 2499 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]); 2500 init_timer(&r8a66597->td_timer[i]); 2501 r8a66597->td_timer[i].function = r8a66597_td_timer; 2502 r8a66597->td_timer[i].data = (unsigned long)r8a66597; 2503 setup_timer(&r8a66597->interval_timer[i], 2504 r8a66597_interval_timer, 2505 (unsigned long)r8a66597); 2506 } 2507 INIT_LIST_HEAD(&r8a66597->child_device); 2508 2509 hcd->rsrc_start = res->start; 2510 hcd->has_tt = 1; 2511 2512 ret = usb_add_hcd(hcd, irq, irq_trigger); 2513 if (ret != 0) { 2514 dev_err(&pdev->dev, "Failed to add hcd\n"); 2515 goto clean_up3; 2516 } 2517 2518 return 0; 2519 2520 clean_up3: 2521 if (r8a66597->pdata->on_chip) 2522 clk_put(r8a66597->clk); 2523 clean_up2: 2524 usb_put_hcd(hcd); 2525 2526 clean_up: 2527 if (reg) 2528 iounmap(reg); 2529 2530 return ret; 2531 } 2532 2533 static struct platform_driver r8a66597_driver = { 2534 .probe = r8a66597_probe, 2535 .remove = r8a66597_remove, 2536 .driver = { 2537 .name = (char *) hcd_name, 2538 .owner = THIS_MODULE, 2539 .pm = R8A66597_DEV_PM_OPS, 2540 }, 2541 }; 2542 2543 module_platform_driver(r8a66597_driver); 2544