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 <shimoda.yoshihiro@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/platform_device.h> 37 #include <linux/io.h> 38 #include <linux/mm.h> 39 #include <linux/irq.h> 40 #include <asm/cacheflush.h> 41 42 #include "../core/hcd.h" 43 #include "r8a66597.h" 44 45 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver"); 46 MODULE_LICENSE("GPL"); 47 MODULE_AUTHOR("Yoshihiro Shimoda"); 48 MODULE_ALIAS("platform:r8a66597_hcd"); 49 50 #define DRIVER_VERSION "2009-05-26" 51 52 static const char hcd_name[] = "r8a66597_hcd"; 53 54 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum); 55 static int r8a66597_get_frame(struct usb_hcd *hcd); 56 57 /* this function must be called with interrupt disabled */ 58 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 59 unsigned long reg) 60 { 61 u16 tmp; 62 63 tmp = r8a66597_read(r8a66597, INTENB0); 64 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 65 r8a66597_bset(r8a66597, 1 << pipenum, reg); 66 r8a66597_write(r8a66597, tmp, INTENB0); 67 } 68 69 /* this function must be called with interrupt disabled */ 70 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, 71 unsigned long reg) 72 { 73 u16 tmp; 74 75 tmp = r8a66597_read(r8a66597, INTENB0); 76 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 77 r8a66597_bclr(r8a66597, 1 << pipenum, reg); 78 r8a66597_write(r8a66597, tmp, INTENB0); 79 } 80 81 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address, 82 u16 usbspd, u8 upphub, u8 hubport, int port) 83 { 84 u16 val; 85 unsigned long devadd_reg = get_devadd_addr(r8a66597_address); 86 87 val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001); 88 r8a66597_write(r8a66597, val, devadd_reg); 89 } 90 91 static int r8a66597_clock_enable(struct r8a66597 *r8a66597) 92 { 93 u16 tmp; 94 int i = 0; 95 96 if (r8a66597->pdata->on_chip) { 97 #ifdef CONFIG_HAVE_CLK 98 clk_enable(r8a66597->clk); 99 #endif 100 do { 101 r8a66597_write(r8a66597, SCKE, SYSCFG0); 102 tmp = r8a66597_read(r8a66597, SYSCFG0); 103 if (i++ > 1000) { 104 printk(KERN_ERR "r8a66597: reg access fail.\n"); 105 return -ENXIO; 106 } 107 } while ((tmp & SCKE) != SCKE); 108 r8a66597_write(r8a66597, 0x04, 0x02); 109 } else { 110 do { 111 r8a66597_write(r8a66597, USBE, SYSCFG0); 112 tmp = r8a66597_read(r8a66597, SYSCFG0); 113 if (i++ > 1000) { 114 printk(KERN_ERR "r8a66597: reg access fail.\n"); 115 return -ENXIO; 116 } 117 } while ((tmp & USBE) != USBE); 118 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 119 r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata), 120 XTAL, SYSCFG0); 121 122 i = 0; 123 r8a66597_bset(r8a66597, XCKE, SYSCFG0); 124 do { 125 msleep(1); 126 tmp = r8a66597_read(r8a66597, SYSCFG0); 127 if (i++ > 500) { 128 printk(KERN_ERR "r8a66597: reg access fail.\n"); 129 return -ENXIO; 130 } 131 } while ((tmp & SCKE) != SCKE); 132 } 133 134 return 0; 135 } 136 137 static void r8a66597_clock_disable(struct r8a66597 *r8a66597) 138 { 139 r8a66597_bclr(r8a66597, SCKE, SYSCFG0); 140 udelay(1); 141 142 if (r8a66597->pdata->on_chip) { 143 #ifdef CONFIG_HAVE_CLK 144 clk_disable(r8a66597->clk); 145 #endif 146 } else { 147 r8a66597_bclr(r8a66597, PLLC, SYSCFG0); 148 r8a66597_bclr(r8a66597, XCKE, SYSCFG0); 149 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 150 } 151 } 152 153 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port) 154 { 155 u16 val; 156 157 val = port ? DRPD : DCFM | DRPD; 158 r8a66597_bset(r8a66597, val, get_syscfg_reg(port)); 159 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 160 161 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port)); 162 r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port)); 163 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 164 } 165 166 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port) 167 { 168 u16 val, tmp; 169 170 r8a66597_write(r8a66597, 0, get_intenb_reg(port)); 171 r8a66597_write(r8a66597, 0, get_intsts_reg(port)); 172 173 r8a66597_port_power(r8a66597, port, 0); 174 175 do { 176 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS; 177 udelay(640); 178 } while (tmp == EDGESTS); 179 180 val = port ? DRPD : DCFM | DRPD; 181 r8a66597_bclr(r8a66597, val, get_syscfg_reg(port)); 182 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 183 } 184 185 static int enable_controller(struct r8a66597 *r8a66597) 186 { 187 int ret, port; 188 u16 vif = r8a66597->pdata->vif ? LDRV : 0; 189 u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0; 190 u16 endian = r8a66597->pdata->endian ? BIGEND : 0; 191 192 ret = r8a66597_clock_enable(r8a66597); 193 if (ret < 0) 194 return ret; 195 196 r8a66597_bset(r8a66597, vif & LDRV, PINCFG); 197 r8a66597_bset(r8a66597, USBE, SYSCFG0); 198 199 r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 200 r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG); 201 r8a66597_bset(r8a66597, BRDY0, BRDYENB); 202 r8a66597_bset(r8a66597, BEMP0, BEMPENB); 203 204 r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL); 205 r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL); 206 r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL); 207 r8a66597_bset(r8a66597, TRNENSEL, SOFCFG); 208 209 r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1); 210 211 for (port = 0; port < r8a66597->max_root_hub; port++) 212 r8a66597_enable_port(r8a66597, port); 213 214 return 0; 215 } 216 217 static void disable_controller(struct r8a66597 *r8a66597) 218 { 219 int port; 220 221 /* disable interrupts */ 222 r8a66597_write(r8a66597, 0, INTENB0); 223 r8a66597_write(r8a66597, 0, INTENB1); 224 r8a66597_write(r8a66597, 0, BRDYENB); 225 r8a66597_write(r8a66597, 0, BEMPENB); 226 r8a66597_write(r8a66597, 0, NRDYENB); 227 228 /* clear status */ 229 r8a66597_write(r8a66597, 0, BRDYSTS); 230 r8a66597_write(r8a66597, 0, NRDYSTS); 231 r8a66597_write(r8a66597, 0, BEMPSTS); 232 233 for (port = 0; port < r8a66597->max_root_hub; port++) 234 r8a66597_disable_port(r8a66597, port); 235 236 r8a66597_clock_disable(r8a66597); 237 } 238 239 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597, 240 struct usb_device *udev) 241 { 242 struct r8a66597_device *dev; 243 244 if (udev->parent && udev->parent->devnum != 1) 245 udev = udev->parent; 246 247 dev = dev_get_drvdata(&udev->dev); 248 if (dev) 249 return dev->address; 250 else 251 return 0; 252 } 253 254 static int is_child_device(char *devpath) 255 { 256 return (devpath[2] ? 1 : 0); 257 } 258 259 static int is_hub_limit(char *devpath) 260 { 261 return ((strlen(devpath) >= 4) ? 1 : 0); 262 } 263 264 static void get_port_number(struct r8a66597 *r8a66597, 265 char *devpath, u16 *root_port, u16 *hub_port) 266 { 267 if (root_port) { 268 *root_port = (devpath[0] & 0x0F) - 1; 269 if (*root_port >= r8a66597->max_root_hub) 270 printk(KERN_ERR "r8a66597: Illegal root port number.\n"); 271 } 272 if (hub_port) 273 *hub_port = devpath[2] & 0x0F; 274 } 275 276 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed) 277 { 278 u16 usbspd = 0; 279 280 switch (speed) { 281 case USB_SPEED_LOW: 282 usbspd = LSMODE; 283 break; 284 case USB_SPEED_FULL: 285 usbspd = FSMODE; 286 break; 287 case USB_SPEED_HIGH: 288 usbspd = HSMODE; 289 break; 290 default: 291 printk(KERN_ERR "r8a66597: unknown speed\n"); 292 break; 293 } 294 295 return usbspd; 296 } 297 298 static void set_child_connect_map(struct r8a66597 *r8a66597, int address) 299 { 300 int idx; 301 302 idx = address / 32; 303 r8a66597->child_connect_map[idx] |= 1 << (address % 32); 304 } 305 306 static void put_child_connect_map(struct r8a66597 *r8a66597, int address) 307 { 308 int idx; 309 310 idx = address / 32; 311 r8a66597->child_connect_map[idx] &= ~(1 << (address % 32)); 312 } 313 314 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch) 315 { 316 u16 pipenum = pipe->info.pipenum; 317 const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO}; 318 const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL}; 319 const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR}; 320 321 if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */ 322 dma_ch = R8A66597_PIPE_NO_DMA; 323 324 pipe->fifoaddr = fifoaddr[dma_ch]; 325 pipe->fifosel = fifosel[dma_ch]; 326 pipe->fifoctr = fifoctr[dma_ch]; 327 328 if (pipenum == 0) 329 pipe->pipectr = DCPCTR; 330 else 331 pipe->pipectr = get_pipectr_addr(pipenum); 332 333 if (check_bulk_or_isoc(pipenum)) { 334 pipe->pipetre = get_pipetre_addr(pipenum); 335 pipe->pipetrn = get_pipetrn_addr(pipenum); 336 } else { 337 pipe->pipetre = 0; 338 pipe->pipetrn = 0; 339 } 340 } 341 342 static struct r8a66597_device * 343 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb) 344 { 345 if (usb_pipedevice(urb->pipe) == 0) 346 return &r8a66597->device0; 347 348 return dev_get_drvdata(&urb->dev->dev); 349 } 350 351 static int make_r8a66597_device(struct r8a66597 *r8a66597, 352 struct urb *urb, u8 addr) 353 { 354 struct r8a66597_device *dev; 355 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */ 356 357 dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC); 358 if (dev == NULL) 359 return -ENOMEM; 360 361 dev_set_drvdata(&urb->dev->dev, dev); 362 dev->udev = urb->dev; 363 dev->address = addr; 364 dev->usb_address = usb_address; 365 dev->state = USB_STATE_ADDRESS; 366 dev->ep_in_toggle = 0; 367 dev->ep_out_toggle = 0; 368 INIT_LIST_HEAD(&dev->device_list); 369 list_add_tail(&dev->device_list, &r8a66597->child_device); 370 371 get_port_number(r8a66597, urb->dev->devpath, 372 &dev->root_port, &dev->hub_port); 373 if (!is_child_device(urb->dev->devpath)) 374 r8a66597->root_hub[dev->root_port].dev = dev; 375 376 set_devadd_reg(r8a66597, dev->address, 377 get_r8a66597_usb_speed(urb->dev->speed), 378 get_parent_r8a66597_address(r8a66597, urb->dev), 379 dev->hub_port, dev->root_port); 380 381 return 0; 382 } 383 384 /* this function must be called with interrupt disabled */ 385 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb) 386 { 387 u8 addr; /* R8A66597's address */ 388 struct r8a66597_device *dev; 389 390 if (is_hub_limit(urb->dev->devpath)) { 391 dev_err(&urb->dev->dev, "External hub limit reached.\n"); 392 return 0; 393 } 394 395 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 396 if (dev && dev->state >= USB_STATE_ADDRESS) 397 return dev->address; 398 399 for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) { 400 if (r8a66597->address_map & (1 << addr)) 401 continue; 402 403 dbg("alloc_address: r8a66597_addr=%d", addr); 404 r8a66597->address_map |= 1 << addr; 405 406 if (make_r8a66597_device(r8a66597, urb, addr) < 0) 407 return 0; 408 409 return addr; 410 } 411 412 dev_err(&urb->dev->dev, 413 "cannot communicate with a USB device more than 10.(%x)\n", 414 r8a66597->address_map); 415 416 return 0; 417 } 418 419 /* this function must be called with interrupt disabled */ 420 static void free_usb_address(struct r8a66597 *r8a66597, 421 struct r8a66597_device *dev) 422 { 423 int port; 424 425 if (!dev) 426 return; 427 428 dbg("free_addr: addr=%d", dev->address); 429 430 dev->state = USB_STATE_DEFAULT; 431 r8a66597->address_map &= ~(1 << dev->address); 432 dev->address = 0; 433 dev_set_drvdata(&dev->udev->dev, NULL); 434 list_del(&dev->device_list); 435 kfree(dev); 436 437 for (port = 0; port < r8a66597->max_root_hub; port++) { 438 if (r8a66597->root_hub[port].dev == dev) { 439 r8a66597->root_hub[port].dev = NULL; 440 break; 441 } 442 } 443 } 444 445 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg, 446 u16 mask, u16 loop) 447 { 448 u16 tmp; 449 int i = 0; 450 451 do { 452 tmp = r8a66597_read(r8a66597, reg); 453 if (i++ > 1000000) { 454 printk(KERN_ERR "r8a66597: register%lx, loop %x " 455 "is timeout\n", reg, loop); 456 break; 457 } 458 ndelay(1); 459 } while ((tmp & mask) != loop); 460 } 461 462 /* this function must be called with interrupt disabled */ 463 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 464 { 465 u16 tmp; 466 467 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 468 if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */ 469 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 470 r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr); 471 } 472 473 /* this function must be called with interrupt disabled */ 474 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 475 { 476 u16 tmp; 477 478 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 479 if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */ 480 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr); 481 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 482 r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0); 483 } 484 485 /* this function must be called with interrupt disabled */ 486 static void clear_all_buffer(struct r8a66597 *r8a66597, 487 struct r8a66597_pipe *pipe) 488 { 489 u16 tmp; 490 491 if (!pipe || pipe->info.pipenum == 0) 492 return; 493 494 pipe_stop(r8a66597, pipe); 495 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr); 496 tmp = r8a66597_read(r8a66597, pipe->pipectr); 497 tmp = r8a66597_read(r8a66597, pipe->pipectr); 498 tmp = r8a66597_read(r8a66597, pipe->pipectr); 499 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr); 500 } 501 502 /* this function must be called with interrupt disabled */ 503 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597, 504 struct r8a66597_pipe *pipe, int toggle) 505 { 506 if (toggle) 507 r8a66597_bset(r8a66597, SQSET, pipe->pipectr); 508 else 509 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr); 510 } 511 512 static inline unsigned short mbw_value(struct r8a66597 *r8a66597) 513 { 514 if (r8a66597->pdata->on_chip) 515 return MBW_32; 516 else 517 return MBW_16; 518 } 519 520 /* this function must be called with interrupt disabled */ 521 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum) 522 { 523 unsigned short mbw = mbw_value(r8a66597); 524 525 r8a66597_mdfy(r8a66597, mbw | pipenum, mbw | CURPIPE, CFIFOSEL); 526 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum); 527 } 528 529 /* this function must be called with interrupt disabled */ 530 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597, 531 struct r8a66597_pipe *pipe) 532 { 533 unsigned short mbw = mbw_value(r8a66597); 534 535 cfifo_change(r8a66597, 0); 536 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D0FIFOSEL); 537 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D1FIFOSEL); 538 539 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, mbw | CURPIPE, 540 pipe->fifosel); 541 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum); 542 } 543 544 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep) 545 { 546 struct r8a66597_pipe *pipe = hep->hcpriv; 547 548 if (usb_pipeendpoint(urb->pipe) == 0) 549 return 0; 550 else 551 return pipe->info.pipenum; 552 } 553 554 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb) 555 { 556 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 557 558 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address; 559 } 560 561 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev, 562 int urb_pipe) 563 { 564 if (!dev) 565 return NULL; 566 567 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle; 568 } 569 570 /* this function must be called with interrupt disabled */ 571 static void pipe_toggle_set(struct r8a66597 *r8a66597, 572 struct r8a66597_pipe *pipe, 573 struct urb *urb, int set) 574 { 575 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 576 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 577 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 578 579 if (!toggle) 580 return; 581 582 if (set) 583 *toggle |= 1 << endpoint; 584 else 585 *toggle &= ~(1 << endpoint); 586 } 587 588 /* this function must be called with interrupt disabled */ 589 static void pipe_toggle_save(struct r8a66597 *r8a66597, 590 struct r8a66597_pipe *pipe, 591 struct urb *urb) 592 { 593 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON) 594 pipe_toggle_set(r8a66597, pipe, urb, 1); 595 else 596 pipe_toggle_set(r8a66597, pipe, urb, 0); 597 } 598 599 /* this function must be called with interrupt disabled */ 600 static void pipe_toggle_restore(struct r8a66597 *r8a66597, 601 struct r8a66597_pipe *pipe, 602 struct urb *urb) 603 { 604 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 605 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 606 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 607 608 if (!toggle) 609 return; 610 611 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint)); 612 } 613 614 /* this function must be called with interrupt disabled */ 615 static void pipe_buffer_setting(struct r8a66597 *r8a66597, 616 struct r8a66597_pipe_info *info) 617 { 618 u16 val = 0; 619 620 if (info->pipenum == 0) 621 return; 622 623 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 624 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 625 r8a66597_write(r8a66597, info->pipenum, PIPESEL); 626 if (!info->dir_in) 627 val |= R8A66597_DIR; 628 if (info->type == R8A66597_BULK && info->dir_in) 629 val |= R8A66597_DBLB | R8A66597_SHTNAK; 630 val |= info->type | info->epnum; 631 r8a66597_write(r8a66597, val, PIPECFG); 632 633 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum), 634 PIPEBUF); 635 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket, 636 PIPEMAXP); 637 r8a66597_write(r8a66597, info->interval, PIPEPERI); 638 } 639 640 /* this function must be called with interrupt disabled */ 641 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td) 642 { 643 struct r8a66597_pipe_info *info; 644 struct urb *urb = td->urb; 645 646 if (td->pipenum > 0) { 647 info = &td->pipe->info; 648 cfifo_change(r8a66597, 0); 649 pipe_buffer_setting(r8a66597, info); 650 651 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), 652 usb_pipeout(urb->pipe)) && 653 !usb_pipecontrol(urb->pipe)) { 654 r8a66597_pipe_toggle(r8a66597, td->pipe, 0); 655 pipe_toggle_set(r8a66597, td->pipe, urb, 0); 656 clear_all_buffer(r8a66597, td->pipe); 657 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), 658 usb_pipeout(urb->pipe), 1); 659 } 660 pipe_toggle_restore(r8a66597, td->pipe, urb); 661 } 662 } 663 664 /* this function must be called with interrupt disabled */ 665 static u16 get_empty_pipenum(struct r8a66597 *r8a66597, 666 struct usb_endpoint_descriptor *ep) 667 { 668 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min; 669 670 memset(array, 0, sizeof(array)); 671 switch (usb_endpoint_type(ep)) { 672 case USB_ENDPOINT_XFER_BULK: 673 if (usb_endpoint_dir_in(ep)) 674 array[i++] = 4; 675 else { 676 array[i++] = 3; 677 array[i++] = 5; 678 } 679 break; 680 case USB_ENDPOINT_XFER_INT: 681 if (usb_endpoint_dir_in(ep)) { 682 array[i++] = 6; 683 array[i++] = 7; 684 array[i++] = 8; 685 } else 686 array[i++] = 9; 687 break; 688 case USB_ENDPOINT_XFER_ISOC: 689 if (usb_endpoint_dir_in(ep)) 690 array[i++] = 2; 691 else 692 array[i++] = 1; 693 break; 694 default: 695 printk(KERN_ERR "r8a66597: Illegal type\n"); 696 return 0; 697 } 698 699 i = 1; 700 min = array[0]; 701 while (array[i] != 0) { 702 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]]) 703 min = array[i]; 704 i++; 705 } 706 707 return min; 708 } 709 710 static u16 get_r8a66597_type(__u8 type) 711 { 712 u16 r8a66597_type; 713 714 switch (type) { 715 case USB_ENDPOINT_XFER_BULK: 716 r8a66597_type = R8A66597_BULK; 717 break; 718 case USB_ENDPOINT_XFER_INT: 719 r8a66597_type = R8A66597_INT; 720 break; 721 case USB_ENDPOINT_XFER_ISOC: 722 r8a66597_type = R8A66597_ISO; 723 break; 724 default: 725 printk(KERN_ERR "r8a66597: Illegal type\n"); 726 r8a66597_type = 0x0000; 727 break; 728 } 729 730 return r8a66597_type; 731 } 732 733 static u16 get_bufnum(u16 pipenum) 734 { 735 u16 bufnum = 0; 736 737 if (pipenum == 0) 738 bufnum = 0; 739 else if (check_bulk_or_isoc(pipenum)) 740 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2; 741 else if (check_interrupt(pipenum)) 742 bufnum = 4 + (pipenum - 6); 743 else 744 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); 745 746 return bufnum; 747 } 748 749 static u16 get_buf_bsize(u16 pipenum) 750 { 751 u16 buf_bsize = 0; 752 753 if (pipenum == 0) 754 buf_bsize = 3; 755 else if (check_bulk_or_isoc(pipenum)) 756 buf_bsize = R8A66597_BUF_BSIZE - 1; 757 else if (check_interrupt(pipenum)) 758 buf_bsize = 0; 759 else 760 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); 761 762 return buf_bsize; 763 } 764 765 /* this function must be called with interrupt disabled */ 766 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597, 767 struct r8a66597_device *dev, 768 struct r8a66597_pipe *pipe, 769 struct urb *urb) 770 { 771 int i; 772 struct r8a66597_pipe_info *info = &pipe->info; 773 unsigned short mbw = mbw_value(r8a66597); 774 775 /* pipe dma is only for external controlles */ 776 if (r8a66597->pdata->on_chip) 777 return; 778 779 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) { 780 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) { 781 if ((r8a66597->dma_map & (1 << i)) != 0) 782 continue; 783 784 dev_info(&dev->udev->dev, 785 "address %d, EndpointAddress 0x%02x use " 786 "DMA FIFO\n", usb_pipedevice(urb->pipe), 787 info->dir_in ? 788 USB_ENDPOINT_DIR_MASK + info->epnum 789 : info->epnum); 790 791 r8a66597->dma_map |= 1 << i; 792 dev->dma_map |= 1 << i; 793 set_pipe_reg_addr(pipe, i); 794 795 cfifo_change(r8a66597, 0); 796 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, 797 mbw | CURPIPE, pipe->fifosel); 798 799 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, 800 pipe->info.pipenum); 801 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr); 802 break; 803 } 804 } 805 } 806 807 /* this function must be called with interrupt disabled */ 808 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb, 809 struct usb_host_endpoint *hep, 810 struct r8a66597_pipe_info *info) 811 { 812 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 813 struct r8a66597_pipe *pipe = hep->hcpriv; 814 815 dbg("enable_pipe:"); 816 817 pipe->info = *info; 818 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA); 819 r8a66597->pipe_cnt[pipe->info.pipenum]++; 820 dev->pipe_cnt[pipe->info.pipenum]++; 821 822 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb); 823 } 824 825 static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb, 826 int status) 827 __releases(r8a66597->lock) 828 __acquires(r8a66597->lock) 829 { 830 if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) { 831 void *ptr; 832 833 for (ptr = urb->transfer_buffer; 834 ptr < urb->transfer_buffer + urb->transfer_buffer_length; 835 ptr += PAGE_SIZE) 836 flush_dcache_page(virt_to_page(ptr)); 837 } 838 839 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb); 840 spin_unlock(&r8a66597->lock); 841 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status); 842 spin_lock(&r8a66597->lock); 843 } 844 845 /* this function must be called with interrupt disabled */ 846 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address) 847 { 848 struct r8a66597_td *td, *next; 849 struct urb *urb; 850 struct list_head *list = &r8a66597->pipe_queue[pipenum]; 851 852 if (list_empty(list)) 853 return; 854 855 list_for_each_entry_safe(td, next, list, queue) { 856 if (td->address != address) 857 continue; 858 859 urb = td->urb; 860 list_del(&td->queue); 861 kfree(td); 862 863 if (urb) 864 r8a66597_urb_done(r8a66597, urb, -ENODEV); 865 866 break; 867 } 868 } 869 870 /* this function must be called with interrupt disabled */ 871 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597, 872 struct r8a66597_device *dev) 873 { 874 int check_ep0 = 0; 875 u16 pipenum; 876 877 if (!dev) 878 return; 879 880 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 881 if (!dev->pipe_cnt[pipenum]) 882 continue; 883 884 if (!check_ep0) { 885 check_ep0 = 1; 886 force_dequeue(r8a66597, 0, dev->address); 887 } 888 889 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum]; 890 dev->pipe_cnt[pipenum] = 0; 891 force_dequeue(r8a66597, pipenum, dev->address); 892 } 893 894 dbg("disable_pipe"); 895 896 r8a66597->dma_map &= ~(dev->dma_map); 897 dev->dma_map = 0; 898 } 899 900 static u16 get_interval(struct urb *urb, __u8 interval) 901 { 902 u16 time = 1; 903 int i; 904 905 if (urb->dev->speed == USB_SPEED_HIGH) { 906 if (interval > IITV) 907 time = IITV; 908 else 909 time = interval ? interval - 1 : 0; 910 } else { 911 if (interval > 128) { 912 time = IITV; 913 } else { 914 /* calculate the nearest value for PIPEPERI */ 915 for (i = 0; i < 7; i++) { 916 if ((1 << i) < interval && 917 (1 << (i + 1) > interval)) 918 time = 1 << i; 919 } 920 } 921 } 922 923 return time; 924 } 925 926 static unsigned long get_timer_interval(struct urb *urb, __u8 interval) 927 { 928 __u8 i; 929 unsigned long time = 1; 930 931 if (usb_pipeisoc(urb->pipe)) 932 return 0; 933 934 if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) { 935 for (i = 0; i < (interval - 1); i++) 936 time *= 2; 937 time = time * 125 / 1000; /* uSOF -> msec */ 938 } else { 939 time = interval; 940 } 941 942 return time; 943 } 944 945 /* this function must be called with interrupt disabled */ 946 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb, 947 struct usb_host_endpoint *hep, 948 struct usb_endpoint_descriptor *ep) 949 { 950 struct r8a66597_pipe_info info; 951 952 info.pipenum = get_empty_pipenum(r8a66597, ep); 953 info.address = get_urb_to_r8a66597_addr(r8a66597, urb); 954 info.epnum = usb_endpoint_num(ep); 955 info.maxpacket = le16_to_cpu(ep->wMaxPacketSize); 956 info.type = get_r8a66597_type(usb_endpoint_type(ep)); 957 info.bufnum = get_bufnum(info.pipenum); 958 info.buf_bsize = get_buf_bsize(info.pipenum); 959 if (info.type == R8A66597_BULK) { 960 info.interval = 0; 961 info.timer_interval = 0; 962 } else { 963 info.interval = get_interval(urb, ep->bInterval); 964 info.timer_interval = get_timer_interval(urb, ep->bInterval); 965 } 966 if (usb_endpoint_dir_in(ep)) 967 info.dir_in = 1; 968 else 969 info.dir_in = 0; 970 971 enable_r8a66597_pipe(r8a66597, urb, hep, &info); 972 } 973 974 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 975 { 976 struct r8a66597_device *dev; 977 978 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 979 dev->state = USB_STATE_CONFIGURED; 980 } 981 982 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb, 983 u16 pipenum) 984 { 985 if (pipenum == 0 && usb_pipeout(urb->pipe)) 986 enable_irq_empty(r8a66597, pipenum); 987 else 988 enable_irq_ready(r8a66597, pipenum); 989 990 if (!usb_pipeisoc(urb->pipe)) 991 enable_irq_nrdy(r8a66597, pipenum); 992 } 993 994 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum) 995 { 996 disable_irq_ready(r8a66597, pipenum); 997 disable_irq_nrdy(r8a66597, pipenum); 998 } 999 1000 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597) 1001 { 1002 mod_timer(&r8a66597->rh_timer, 1003 jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME)); 1004 } 1005 1006 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port, 1007 int connect) 1008 { 1009 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1010 1011 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1012 rh->scount = R8A66597_MAX_SAMPLING; 1013 if (connect) 1014 rh->port |= 1 << USB_PORT_FEAT_CONNECTION; 1015 else 1016 rh->port &= ~(1 << USB_PORT_FEAT_CONNECTION); 1017 rh->port |= 1 << USB_PORT_FEAT_C_CONNECTION; 1018 1019 r8a66597_root_hub_start_polling(r8a66597); 1020 } 1021 1022 /* this function must be called with interrupt disabled */ 1023 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port, 1024 u16 syssts) 1025 __releases(r8a66597->lock) 1026 __acquires(r8a66597->lock) 1027 { 1028 if (syssts == SE0) { 1029 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1030 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1031 } else { 1032 if (syssts == FS_JSTS) 1033 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 1034 else if (syssts == LS_JSTS) 1035 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 1036 1037 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port)); 1038 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port)); 1039 1040 if (r8a66597->bus_suspended) 1041 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1042 } 1043 1044 spin_unlock(&r8a66597->lock); 1045 usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597)); 1046 spin_lock(&r8a66597->lock); 1047 } 1048 1049 /* this function must be called with interrupt disabled */ 1050 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port) 1051 { 1052 u16 speed = get_rh_usb_speed(r8a66597, port); 1053 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1054 1055 rh->port &= ~((1 << USB_PORT_FEAT_HIGHSPEED) | 1056 (1 << USB_PORT_FEAT_LOWSPEED)); 1057 if (speed == HSMODE) 1058 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED); 1059 else if (speed == LSMODE) 1060 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED); 1061 1062 rh->port &= ~(1 << USB_PORT_FEAT_RESET); 1063 rh->port |= 1 << USB_PORT_FEAT_ENABLE; 1064 } 1065 1066 /* this function must be called with interrupt disabled */ 1067 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port) 1068 { 1069 struct r8a66597_device *dev = r8a66597->root_hub[port].dev; 1070 1071 disable_r8a66597_pipe_all(r8a66597, dev); 1072 free_usb_address(r8a66597, dev); 1073 1074 start_root_hub_sampling(r8a66597, port, 0); 1075 } 1076 1077 /* this function must be called with interrupt disabled */ 1078 static void prepare_setup_packet(struct r8a66597 *r8a66597, 1079 struct r8a66597_td *td) 1080 { 1081 int i; 1082 __le16 *p = (__le16 *)td->urb->setup_packet; 1083 unsigned long setup_addr = USBREQ; 1084 1085 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket, 1086 DCPMAXP); 1087 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1); 1088 1089 for (i = 0; i < 4; i++) { 1090 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr); 1091 setup_addr += 2; 1092 } 1093 r8a66597_write(r8a66597, SUREQ, DCPCTR); 1094 } 1095 1096 /* this function must be called with interrupt disabled */ 1097 static void prepare_packet_read(struct r8a66597 *r8a66597, 1098 struct r8a66597_td *td) 1099 { 1100 struct urb *urb = td->urb; 1101 1102 if (usb_pipecontrol(urb->pipe)) { 1103 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1104 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1105 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1106 if (urb->actual_length == 0) { 1107 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1108 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1109 } 1110 pipe_irq_disable(r8a66597, td->pipenum); 1111 pipe_start(r8a66597, td->pipe); 1112 pipe_irq_enable(r8a66597, urb, td->pipenum); 1113 } else { 1114 if (urb->actual_length == 0) { 1115 pipe_irq_disable(r8a66597, td->pipenum); 1116 pipe_setting(r8a66597, td); 1117 pipe_stop(r8a66597, td->pipe); 1118 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1119 1120 if (td->pipe->pipetre) { 1121 r8a66597_write(r8a66597, TRCLR, 1122 td->pipe->pipetre); 1123 r8a66597_write(r8a66597, 1124 DIV_ROUND_UP 1125 (urb->transfer_buffer_length, 1126 td->maxpacket), 1127 td->pipe->pipetrn); 1128 r8a66597_bset(r8a66597, TRENB, 1129 td->pipe->pipetre); 1130 } 1131 1132 pipe_start(r8a66597, td->pipe); 1133 pipe_irq_enable(r8a66597, urb, td->pipenum); 1134 } 1135 } 1136 } 1137 1138 /* this function must be called with interrupt disabled */ 1139 static void prepare_packet_write(struct r8a66597 *r8a66597, 1140 struct r8a66597_td *td) 1141 { 1142 u16 tmp; 1143 struct urb *urb = td->urb; 1144 1145 if (usb_pipecontrol(urb->pipe)) { 1146 pipe_stop(r8a66597, td->pipe); 1147 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1148 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1149 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1150 if (urb->actual_length == 0) { 1151 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1152 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1153 } 1154 } else { 1155 if (urb->actual_length == 0) 1156 pipe_setting(r8a66597, td); 1157 if (td->pipe->pipetre) 1158 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre); 1159 } 1160 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1161 1162 fifo_change_from_pipe(r8a66597, td->pipe); 1163 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1164 if (unlikely((tmp & FRDY) == 0)) 1165 pipe_irq_enable(r8a66597, urb, td->pipenum); 1166 else 1167 packet_write(r8a66597, td->pipenum); 1168 pipe_start(r8a66597, td->pipe); 1169 } 1170 1171 /* this function must be called with interrupt disabled */ 1172 static void prepare_status_packet(struct r8a66597 *r8a66597, 1173 struct r8a66597_td *td) 1174 { 1175 struct urb *urb = td->urb; 1176 1177 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1178 pipe_stop(r8a66597, td->pipe); 1179 1180 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) { 1181 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1182 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1183 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1184 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); 1185 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR); 1186 enable_irq_empty(r8a66597, 0); 1187 } else { 1188 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1189 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1190 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1191 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1192 enable_irq_ready(r8a66597, 0); 1193 } 1194 enable_irq_nrdy(r8a66597, 0); 1195 pipe_start(r8a66597, td->pipe); 1196 } 1197 1198 static int is_set_address(unsigned char *setup_packet) 1199 { 1200 if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) && 1201 setup_packet[1] == USB_REQ_SET_ADDRESS) 1202 return 1; 1203 else 1204 return 0; 1205 } 1206 1207 /* this function must be called with interrupt disabled */ 1208 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1209 { 1210 BUG_ON(!td); 1211 1212 switch (td->type) { 1213 case USB_PID_SETUP: 1214 if (is_set_address(td->urb->setup_packet)) { 1215 td->set_address = 1; 1216 td->urb->setup_packet[2] = alloc_usb_address(r8a66597, 1217 td->urb); 1218 if (td->urb->setup_packet[2] == 0) 1219 return -EPIPE; 1220 } 1221 prepare_setup_packet(r8a66597, td); 1222 break; 1223 case USB_PID_IN: 1224 prepare_packet_read(r8a66597, td); 1225 break; 1226 case USB_PID_OUT: 1227 prepare_packet_write(r8a66597, td); 1228 break; 1229 case USB_PID_ACK: 1230 prepare_status_packet(r8a66597, td); 1231 break; 1232 default: 1233 printk(KERN_ERR "r8a66597: invalid type.\n"); 1234 break; 1235 } 1236 1237 return 0; 1238 } 1239 1240 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb) 1241 { 1242 if (usb_pipeisoc(urb->pipe)) { 1243 if (urb->number_of_packets == td->iso_cnt) 1244 return 1; 1245 } 1246 1247 /* control or bulk or interrupt */ 1248 if ((urb->transfer_buffer_length <= urb->actual_length) || 1249 (td->short_packet) || (td->zero_packet)) 1250 return 1; 1251 1252 return 0; 1253 } 1254 1255 /* this function must be called with interrupt disabled */ 1256 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1257 { 1258 unsigned long time; 1259 1260 BUG_ON(!td); 1261 1262 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) && 1263 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) { 1264 r8a66597->timeout_map |= 1 << td->pipenum; 1265 switch (usb_pipetype(td->urb->pipe)) { 1266 case PIPE_INTERRUPT: 1267 case PIPE_ISOCHRONOUS: 1268 time = 30; 1269 break; 1270 default: 1271 time = 300; 1272 break; 1273 } 1274 1275 mod_timer(&r8a66597->td_timer[td->pipenum], 1276 jiffies + msecs_to_jiffies(time)); 1277 } 1278 } 1279 1280 /* this function must be called with interrupt disabled */ 1281 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td, 1282 u16 pipenum, struct urb *urb, int status) 1283 __releases(r8a66597->lock) __acquires(r8a66597->lock) 1284 { 1285 int restart = 0; 1286 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 1287 1288 r8a66597->timeout_map &= ~(1 << pipenum); 1289 1290 if (likely(td)) { 1291 if (td->set_address && (status != 0 || urb->unlinked)) 1292 r8a66597->address_map &= ~(1 << urb->setup_packet[2]); 1293 1294 pipe_toggle_save(r8a66597, td->pipe, urb); 1295 list_del(&td->queue); 1296 kfree(td); 1297 } 1298 1299 if (!list_empty(&r8a66597->pipe_queue[pipenum])) 1300 restart = 1; 1301 1302 if (likely(urb)) { 1303 if (usb_pipeisoc(urb->pipe)) 1304 urb->start_frame = r8a66597_get_frame(hcd); 1305 1306 r8a66597_urb_done(r8a66597, urb, status); 1307 } 1308 1309 if (restart) { 1310 td = r8a66597_get_td(r8a66597, pipenum); 1311 if (unlikely(!td)) 1312 return; 1313 1314 start_transfer(r8a66597, td); 1315 set_td_timer(r8a66597, td); 1316 } 1317 } 1318 1319 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) 1320 { 1321 u16 tmp; 1322 int rcv_len, bufsize, urb_len, size; 1323 u16 *buf; 1324 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1325 struct urb *urb; 1326 int finish = 0; 1327 int status = 0; 1328 1329 if (unlikely(!td)) 1330 return; 1331 urb = td->urb; 1332 1333 fifo_change_from_pipe(r8a66597, td->pipe); 1334 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1335 if (unlikely((tmp & FRDY) == 0)) { 1336 pipe_stop(r8a66597, td->pipe); 1337 pipe_irq_disable(r8a66597, pipenum); 1338 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum); 1339 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE); 1340 return; 1341 } 1342 1343 /* prepare parameters */ 1344 rcv_len = tmp & DTLN; 1345 if (usb_pipeisoc(urb->pipe)) { 1346 buf = (u16 *)(urb->transfer_buffer + 1347 urb->iso_frame_desc[td->iso_cnt].offset); 1348 urb_len = urb->iso_frame_desc[td->iso_cnt].length; 1349 } else { 1350 buf = (void *)urb->transfer_buffer + urb->actual_length; 1351 urb_len = urb->transfer_buffer_length - urb->actual_length; 1352 } 1353 bufsize = min(urb_len, (int) td->maxpacket); 1354 if (rcv_len <= bufsize) { 1355 size = rcv_len; 1356 } else { 1357 size = bufsize; 1358 status = -EOVERFLOW; 1359 finish = 1; 1360 } 1361 1362 /* update parameters */ 1363 urb->actual_length += size; 1364 if (rcv_len == 0) 1365 td->zero_packet = 1; 1366 if (rcv_len < bufsize) { 1367 td->short_packet = 1; 1368 } 1369 if (usb_pipeisoc(urb->pipe)) { 1370 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1371 urb->iso_frame_desc[td->iso_cnt].status = status; 1372 td->iso_cnt++; 1373 finish = 0; 1374 } 1375 1376 /* check transfer finish */ 1377 if (finish || check_transfer_finish(td, urb)) { 1378 pipe_stop(r8a66597, td->pipe); 1379 pipe_irq_disable(r8a66597, pipenum); 1380 finish = 1; 1381 } 1382 1383 /* read fifo */ 1384 if (urb->transfer_buffer) { 1385 if (size == 0) 1386 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr); 1387 else 1388 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr, 1389 buf, size); 1390 } 1391 1392 if (finish && pipenum != 0) 1393 finish_request(r8a66597, td, pipenum, urb, status); 1394 } 1395 1396 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum) 1397 { 1398 u16 tmp; 1399 int bufsize, size; 1400 u16 *buf; 1401 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1402 struct urb *urb; 1403 1404 if (unlikely(!td)) 1405 return; 1406 urb = td->urb; 1407 1408 fifo_change_from_pipe(r8a66597, td->pipe); 1409 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1410 if (unlikely((tmp & FRDY) == 0)) { 1411 pipe_stop(r8a66597, td->pipe); 1412 pipe_irq_disable(r8a66597, pipenum); 1413 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum); 1414 finish_request(r8a66597, td, pipenum, urb, -EPIPE); 1415 return; 1416 } 1417 1418 /* prepare parameters */ 1419 bufsize = td->maxpacket; 1420 if (usb_pipeisoc(urb->pipe)) { 1421 buf = (u16 *)(urb->transfer_buffer + 1422 urb->iso_frame_desc[td->iso_cnt].offset); 1423 size = min(bufsize, 1424 (int)urb->iso_frame_desc[td->iso_cnt].length); 1425 } else { 1426 buf = (u16 *)(urb->transfer_buffer + urb->actual_length); 1427 size = min_t(u32, bufsize, 1428 urb->transfer_buffer_length - urb->actual_length); 1429 } 1430 1431 /* write fifo */ 1432 if (pipenum > 0) 1433 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS); 1434 if (urb->transfer_buffer) { 1435 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size); 1436 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size) 1437 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr); 1438 } 1439 1440 /* update parameters */ 1441 urb->actual_length += size; 1442 if (usb_pipeisoc(urb->pipe)) { 1443 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1444 urb->iso_frame_desc[td->iso_cnt].status = 0; 1445 td->iso_cnt++; 1446 } 1447 1448 /* check transfer finish */ 1449 if (check_transfer_finish(td, urb)) { 1450 disable_irq_ready(r8a66597, pipenum); 1451 enable_irq_empty(r8a66597, pipenum); 1452 if (!usb_pipeisoc(urb->pipe)) 1453 enable_irq_nrdy(r8a66597, pipenum); 1454 } else 1455 pipe_irq_enable(r8a66597, urb, pipenum); 1456 } 1457 1458 1459 static void check_next_phase(struct r8a66597 *r8a66597, int status) 1460 { 1461 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0); 1462 struct urb *urb; 1463 u8 finish = 0; 1464 1465 if (unlikely(!td)) 1466 return; 1467 urb = td->urb; 1468 1469 switch (td->type) { 1470 case USB_PID_IN: 1471 case USB_PID_OUT: 1472 if (check_transfer_finish(td, urb)) 1473 td->type = USB_PID_ACK; 1474 break; 1475 case USB_PID_SETUP: 1476 if (urb->transfer_buffer_length == urb->actual_length) 1477 td->type = USB_PID_ACK; 1478 else if (usb_pipeout(urb->pipe)) 1479 td->type = USB_PID_OUT; 1480 else 1481 td->type = USB_PID_IN; 1482 break; 1483 case USB_PID_ACK: 1484 finish = 1; 1485 break; 1486 } 1487 1488 if (finish || status != 0 || urb->unlinked) 1489 finish_request(r8a66597, td, 0, urb, status); 1490 else 1491 start_transfer(r8a66597, td); 1492 } 1493 1494 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum) 1495 { 1496 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1497 1498 if (td) { 1499 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID; 1500 1501 if (pid == PID_NAK) 1502 return -ECONNRESET; 1503 else 1504 return -EPIPE; 1505 } 1506 return 0; 1507 } 1508 1509 static void irq_pipe_ready(struct r8a66597 *r8a66597) 1510 { 1511 u16 check; 1512 u16 pipenum; 1513 u16 mask; 1514 struct r8a66597_td *td; 1515 1516 mask = r8a66597_read(r8a66597, BRDYSTS) 1517 & r8a66597_read(r8a66597, BRDYENB); 1518 r8a66597_write(r8a66597, ~mask, BRDYSTS); 1519 if (mask & BRDY0) { 1520 td = r8a66597_get_td(r8a66597, 0); 1521 if (td && td->type == USB_PID_IN) 1522 packet_read(r8a66597, 0); 1523 else 1524 pipe_irq_disable(r8a66597, 0); 1525 check_next_phase(r8a66597, 0); 1526 } 1527 1528 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1529 check = 1 << pipenum; 1530 if (mask & check) { 1531 td = r8a66597_get_td(r8a66597, pipenum); 1532 if (unlikely(!td)) 1533 continue; 1534 1535 if (td->type == USB_PID_IN) 1536 packet_read(r8a66597, pipenum); 1537 else if (td->type == USB_PID_OUT) 1538 packet_write(r8a66597, pipenum); 1539 } 1540 } 1541 } 1542 1543 static void irq_pipe_empty(struct r8a66597 *r8a66597) 1544 { 1545 u16 tmp; 1546 u16 check; 1547 u16 pipenum; 1548 u16 mask; 1549 struct r8a66597_td *td; 1550 1551 mask = r8a66597_read(r8a66597, BEMPSTS) 1552 & r8a66597_read(r8a66597, BEMPENB); 1553 r8a66597_write(r8a66597, ~mask, BEMPSTS); 1554 if (mask & BEMP0) { 1555 cfifo_change(r8a66597, 0); 1556 td = r8a66597_get_td(r8a66597, 0); 1557 if (td && td->type != USB_PID_OUT) 1558 disable_irq_empty(r8a66597, 0); 1559 check_next_phase(r8a66597, 0); 1560 } 1561 1562 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1563 check = 1 << pipenum; 1564 if (mask & check) { 1565 struct r8a66597_td *td; 1566 td = r8a66597_get_td(r8a66597, pipenum); 1567 if (unlikely(!td)) 1568 continue; 1569 1570 tmp = r8a66597_read(r8a66597, td->pipe->pipectr); 1571 if ((tmp & INBUFM) == 0) { 1572 disable_irq_empty(r8a66597, pipenum); 1573 pipe_irq_disable(r8a66597, pipenum); 1574 finish_request(r8a66597, td, pipenum, td->urb, 1575 0); 1576 } 1577 } 1578 } 1579 } 1580 1581 static void irq_pipe_nrdy(struct r8a66597 *r8a66597) 1582 { 1583 u16 check; 1584 u16 pipenum; 1585 u16 mask; 1586 int status; 1587 1588 mask = r8a66597_read(r8a66597, NRDYSTS) 1589 & r8a66597_read(r8a66597, NRDYENB); 1590 r8a66597_write(r8a66597, ~mask, NRDYSTS); 1591 if (mask & NRDY0) { 1592 cfifo_change(r8a66597, 0); 1593 status = get_urb_error(r8a66597, 0); 1594 pipe_irq_disable(r8a66597, 0); 1595 check_next_phase(r8a66597, status); 1596 } 1597 1598 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1599 check = 1 << pipenum; 1600 if (mask & check) { 1601 struct r8a66597_td *td; 1602 td = r8a66597_get_td(r8a66597, pipenum); 1603 if (unlikely(!td)) 1604 continue; 1605 1606 status = get_urb_error(r8a66597, pipenum); 1607 pipe_irq_disable(r8a66597, pipenum); 1608 pipe_stop(r8a66597, td->pipe); 1609 finish_request(r8a66597, td, pipenum, td->urb, status); 1610 } 1611 } 1612 } 1613 1614 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd) 1615 { 1616 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1617 u16 intsts0, intsts1, intsts2; 1618 u16 intenb0, intenb1, intenb2; 1619 u16 mask0, mask1, mask2; 1620 int status; 1621 1622 spin_lock(&r8a66597->lock); 1623 1624 intsts0 = r8a66597_read(r8a66597, INTSTS0); 1625 intsts1 = r8a66597_read(r8a66597, INTSTS1); 1626 intsts2 = r8a66597_read(r8a66597, INTSTS2); 1627 intenb0 = r8a66597_read(r8a66597, INTENB0); 1628 intenb1 = r8a66597_read(r8a66597, INTENB1); 1629 intenb2 = r8a66597_read(r8a66597, INTENB2); 1630 1631 mask2 = intsts2 & intenb2; 1632 mask1 = intsts1 & intenb1; 1633 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY); 1634 if (mask2) { 1635 if (mask2 & ATTCH) { 1636 r8a66597_write(r8a66597, ~ATTCH, INTSTS2); 1637 r8a66597_bclr(r8a66597, ATTCHE, INTENB2); 1638 1639 /* start usb bus sampling */ 1640 start_root_hub_sampling(r8a66597, 1, 1); 1641 } 1642 if (mask2 & DTCH) { 1643 r8a66597_write(r8a66597, ~DTCH, INTSTS2); 1644 r8a66597_bclr(r8a66597, DTCHE, INTENB2); 1645 r8a66597_usb_disconnect(r8a66597, 1); 1646 } 1647 if (mask2 & BCHG) { 1648 r8a66597_write(r8a66597, ~BCHG, INTSTS2); 1649 r8a66597_bclr(r8a66597, BCHGE, INTENB2); 1650 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1651 } 1652 } 1653 1654 if (mask1) { 1655 if (mask1 & ATTCH) { 1656 r8a66597_write(r8a66597, ~ATTCH, INTSTS1); 1657 r8a66597_bclr(r8a66597, ATTCHE, INTENB1); 1658 1659 /* start usb bus sampling */ 1660 start_root_hub_sampling(r8a66597, 0, 1); 1661 } 1662 if (mask1 & DTCH) { 1663 r8a66597_write(r8a66597, ~DTCH, INTSTS1); 1664 r8a66597_bclr(r8a66597, DTCHE, INTENB1); 1665 r8a66597_usb_disconnect(r8a66597, 0); 1666 } 1667 if (mask1 & BCHG) { 1668 r8a66597_write(r8a66597, ~BCHG, INTSTS1); 1669 r8a66597_bclr(r8a66597, BCHGE, INTENB1); 1670 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1671 } 1672 1673 if (mask1 & SIGN) { 1674 r8a66597_write(r8a66597, ~SIGN, INTSTS1); 1675 status = get_urb_error(r8a66597, 0); 1676 check_next_phase(r8a66597, status); 1677 } 1678 if (mask1 & SACK) { 1679 r8a66597_write(r8a66597, ~SACK, INTSTS1); 1680 check_next_phase(r8a66597, 0); 1681 } 1682 } 1683 if (mask0) { 1684 if (mask0 & BRDY) 1685 irq_pipe_ready(r8a66597); 1686 if (mask0 & BEMP) 1687 irq_pipe_empty(r8a66597); 1688 if (mask0 & NRDY) 1689 irq_pipe_nrdy(r8a66597); 1690 } 1691 1692 spin_unlock(&r8a66597->lock); 1693 return IRQ_HANDLED; 1694 } 1695 1696 /* this function must be called with interrupt disabled */ 1697 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port) 1698 { 1699 u16 tmp; 1700 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1701 1702 if (rh->port & (1 << USB_PORT_FEAT_RESET)) { 1703 unsigned long dvstctr_reg = get_dvstctr_reg(port); 1704 1705 tmp = r8a66597_read(r8a66597, dvstctr_reg); 1706 if ((tmp & USBRST) == USBRST) { 1707 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, 1708 dvstctr_reg); 1709 r8a66597_root_hub_start_polling(r8a66597); 1710 } else 1711 r8a66597_usb_connect(r8a66597, port); 1712 } 1713 1714 if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) { 1715 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1716 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1717 } 1718 1719 if (rh->scount > 0) { 1720 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1721 if (tmp == rh->old_syssts) { 1722 rh->scount--; 1723 if (rh->scount == 0) 1724 r8a66597_check_syssts(r8a66597, port, tmp); 1725 else 1726 r8a66597_root_hub_start_polling(r8a66597); 1727 } else { 1728 rh->scount = R8A66597_MAX_SAMPLING; 1729 rh->old_syssts = tmp; 1730 r8a66597_root_hub_start_polling(r8a66597); 1731 } 1732 } 1733 } 1734 1735 static void r8a66597_interval_timer(unsigned long _r8a66597) 1736 { 1737 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1738 unsigned long flags; 1739 u16 pipenum; 1740 struct r8a66597_td *td; 1741 1742 spin_lock_irqsave(&r8a66597->lock, flags); 1743 1744 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1745 if (!(r8a66597->interval_map & (1 << pipenum))) 1746 continue; 1747 if (timer_pending(&r8a66597->interval_timer[pipenum])) 1748 continue; 1749 1750 td = r8a66597_get_td(r8a66597, pipenum); 1751 if (td) 1752 start_transfer(r8a66597, td); 1753 } 1754 1755 spin_unlock_irqrestore(&r8a66597->lock, flags); 1756 } 1757 1758 static void r8a66597_td_timer(unsigned long _r8a66597) 1759 { 1760 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1761 unsigned long flags; 1762 u16 pipenum; 1763 struct r8a66597_td *td, *new_td = NULL; 1764 struct r8a66597_pipe *pipe; 1765 1766 spin_lock_irqsave(&r8a66597->lock, flags); 1767 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1768 if (!(r8a66597->timeout_map & (1 << pipenum))) 1769 continue; 1770 if (timer_pending(&r8a66597->td_timer[pipenum])) 1771 continue; 1772 1773 td = r8a66597_get_td(r8a66597, pipenum); 1774 if (!td) { 1775 r8a66597->timeout_map &= ~(1 << pipenum); 1776 continue; 1777 } 1778 1779 if (td->urb->actual_length) { 1780 set_td_timer(r8a66597, td); 1781 break; 1782 } 1783 1784 pipe = td->pipe; 1785 pipe_stop(r8a66597, pipe); 1786 1787 new_td = td; 1788 do { 1789 list_move_tail(&new_td->queue, 1790 &r8a66597->pipe_queue[pipenum]); 1791 new_td = r8a66597_get_td(r8a66597, pipenum); 1792 if (!new_td) { 1793 new_td = td; 1794 break; 1795 } 1796 } while (td != new_td && td->address == new_td->address); 1797 1798 start_transfer(r8a66597, new_td); 1799 1800 if (td == new_td) 1801 r8a66597->timeout_map &= ~(1 << pipenum); 1802 else 1803 set_td_timer(r8a66597, new_td); 1804 break; 1805 } 1806 spin_unlock_irqrestore(&r8a66597->lock, flags); 1807 } 1808 1809 static void r8a66597_timer(unsigned long _r8a66597) 1810 { 1811 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1812 unsigned long flags; 1813 int port; 1814 1815 spin_lock_irqsave(&r8a66597->lock, flags); 1816 1817 for (port = 0; port < r8a66597->max_root_hub; port++) 1818 r8a66597_root_hub_control(r8a66597, port); 1819 1820 spin_unlock_irqrestore(&r8a66597->lock, flags); 1821 } 1822 1823 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 1824 { 1825 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 1826 1827 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED && 1828 (urb->dev->state == USB_STATE_CONFIGURED)) 1829 return 1; 1830 else 1831 return 0; 1832 } 1833 1834 static int r8a66597_start(struct usb_hcd *hcd) 1835 { 1836 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1837 1838 hcd->state = HC_STATE_RUNNING; 1839 return enable_controller(r8a66597); 1840 } 1841 1842 static void r8a66597_stop(struct usb_hcd *hcd) 1843 { 1844 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1845 1846 disable_controller(r8a66597); 1847 } 1848 1849 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb) 1850 { 1851 unsigned int usb_address = usb_pipedevice(urb->pipe); 1852 u16 root_port, hub_port; 1853 1854 if (usb_address == 0) { 1855 get_port_number(r8a66597, urb->dev->devpath, 1856 &root_port, &hub_port); 1857 set_devadd_reg(r8a66597, 0, 1858 get_r8a66597_usb_speed(urb->dev->speed), 1859 get_parent_r8a66597_address(r8a66597, urb->dev), 1860 hub_port, root_port); 1861 } 1862 } 1863 1864 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597, 1865 struct urb *urb, 1866 struct usb_host_endpoint *hep) 1867 { 1868 struct r8a66597_td *td; 1869 u16 pipenum; 1870 1871 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC); 1872 if (td == NULL) 1873 return NULL; 1874 1875 pipenum = r8a66597_get_pipenum(urb, hep); 1876 td->pipenum = pipenum; 1877 td->pipe = hep->hcpriv; 1878 td->urb = urb; 1879 td->address = get_urb_to_r8a66597_addr(r8a66597, urb); 1880 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe, 1881 !usb_pipein(urb->pipe)); 1882 if (usb_pipecontrol(urb->pipe)) 1883 td->type = USB_PID_SETUP; 1884 else if (usb_pipein(urb->pipe)) 1885 td->type = USB_PID_IN; 1886 else 1887 td->type = USB_PID_OUT; 1888 INIT_LIST_HEAD(&td->queue); 1889 1890 return td; 1891 } 1892 1893 static int r8a66597_urb_enqueue(struct usb_hcd *hcd, 1894 struct urb *urb, 1895 gfp_t mem_flags) 1896 { 1897 struct usb_host_endpoint *hep = urb->ep; 1898 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1899 struct r8a66597_td *td = NULL; 1900 int ret, request = 0; 1901 unsigned long flags; 1902 1903 spin_lock_irqsave(&r8a66597->lock, flags); 1904 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) { 1905 ret = -ENODEV; 1906 goto error_not_linked; 1907 } 1908 1909 ret = usb_hcd_link_urb_to_ep(hcd, urb); 1910 if (ret) 1911 goto error_not_linked; 1912 1913 if (!hep->hcpriv) { 1914 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), 1915 GFP_ATOMIC); 1916 if (!hep->hcpriv) { 1917 ret = -ENOMEM; 1918 goto error; 1919 } 1920 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA); 1921 if (usb_pipeendpoint(urb->pipe)) 1922 init_pipe_info(r8a66597, urb, hep, &hep->desc); 1923 } 1924 1925 if (unlikely(check_pipe_config(r8a66597, urb))) 1926 init_pipe_config(r8a66597, urb); 1927 1928 set_address_zero(r8a66597, urb); 1929 td = r8a66597_make_td(r8a66597, urb, hep); 1930 if (td == NULL) { 1931 ret = -ENOMEM; 1932 goto error; 1933 } 1934 if (list_empty(&r8a66597->pipe_queue[td->pipenum])) 1935 request = 1; 1936 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]); 1937 urb->hcpriv = td; 1938 1939 if (request) { 1940 if (td->pipe->info.timer_interval) { 1941 r8a66597->interval_map |= 1 << td->pipenum; 1942 mod_timer(&r8a66597->interval_timer[td->pipenum], 1943 jiffies + msecs_to_jiffies( 1944 td->pipe->info.timer_interval)); 1945 } else { 1946 ret = start_transfer(r8a66597, td); 1947 if (ret < 0) { 1948 list_del(&td->queue); 1949 kfree(td); 1950 } 1951 } 1952 } else 1953 set_td_timer(r8a66597, td); 1954 1955 error: 1956 if (ret) 1957 usb_hcd_unlink_urb_from_ep(hcd, urb); 1958 error_not_linked: 1959 spin_unlock_irqrestore(&r8a66597->lock, flags); 1960 return ret; 1961 } 1962 1963 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, 1964 int status) 1965 { 1966 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1967 struct r8a66597_td *td; 1968 unsigned long flags; 1969 int rc; 1970 1971 spin_lock_irqsave(&r8a66597->lock, flags); 1972 rc = usb_hcd_check_unlink_urb(hcd, urb, status); 1973 if (rc) 1974 goto done; 1975 1976 if (urb->hcpriv) { 1977 td = urb->hcpriv; 1978 pipe_stop(r8a66597, td->pipe); 1979 pipe_irq_disable(r8a66597, td->pipenum); 1980 disable_irq_empty(r8a66597, td->pipenum); 1981 finish_request(r8a66597, td, td->pipenum, urb, status); 1982 } 1983 done: 1984 spin_unlock_irqrestore(&r8a66597->lock, flags); 1985 return rc; 1986 } 1987 1988 static void r8a66597_endpoint_disable(struct usb_hcd *hcd, 1989 struct usb_host_endpoint *hep) 1990 { 1991 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1992 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv; 1993 struct r8a66597_td *td; 1994 struct urb *urb = NULL; 1995 u16 pipenum; 1996 unsigned long flags; 1997 1998 if (pipe == NULL) 1999 return; 2000 pipenum = pipe->info.pipenum; 2001 2002 if (pipenum == 0) { 2003 kfree(hep->hcpriv); 2004 hep->hcpriv = NULL; 2005 return; 2006 } 2007 2008 spin_lock_irqsave(&r8a66597->lock, flags); 2009 pipe_stop(r8a66597, pipe); 2010 pipe_irq_disable(r8a66597, pipenum); 2011 disable_irq_empty(r8a66597, pipenum); 2012 td = r8a66597_get_td(r8a66597, pipenum); 2013 if (td) 2014 urb = td->urb; 2015 finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN); 2016 kfree(hep->hcpriv); 2017 hep->hcpriv = NULL; 2018 spin_unlock_irqrestore(&r8a66597->lock, flags); 2019 } 2020 2021 static int r8a66597_get_frame(struct usb_hcd *hcd) 2022 { 2023 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2024 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF; 2025 } 2026 2027 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map) 2028 { 2029 int chix; 2030 2031 if (udev->state == USB_STATE_CONFIGURED && 2032 udev->parent && udev->parent->devnum > 1 && 2033 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB) 2034 map[udev->devnum/32] |= (1 << (udev->devnum % 32)); 2035 2036 for (chix = 0; chix < udev->maxchild; chix++) { 2037 struct usb_device *childdev = udev->children[chix]; 2038 2039 if (childdev) 2040 collect_usb_address_map(childdev, map); 2041 } 2042 } 2043 2044 /* this function must be called with interrupt disabled */ 2045 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597, 2046 int addr) 2047 { 2048 struct r8a66597_device *dev; 2049 struct list_head *list = &r8a66597->child_device; 2050 2051 list_for_each_entry(dev, list, device_list) { 2052 if (dev->usb_address != addr) 2053 continue; 2054 2055 return dev; 2056 } 2057 2058 printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr); 2059 return NULL; 2060 } 2061 2062 static void update_usb_address_map(struct r8a66597 *r8a66597, 2063 struct usb_device *root_hub, 2064 unsigned long *map) 2065 { 2066 int i, j, addr; 2067 unsigned long diff; 2068 unsigned long flags; 2069 2070 for (i = 0; i < 4; i++) { 2071 diff = r8a66597->child_connect_map[i] ^ map[i]; 2072 if (!diff) 2073 continue; 2074 2075 for (j = 0; j < 32; j++) { 2076 if (!(diff & (1 << j))) 2077 continue; 2078 2079 addr = i * 32 + j; 2080 if (map[i] & (1 << j)) 2081 set_child_connect_map(r8a66597, addr); 2082 else { 2083 struct r8a66597_device *dev; 2084 2085 spin_lock_irqsave(&r8a66597->lock, flags); 2086 dev = get_r8a66597_device(r8a66597, addr); 2087 disable_r8a66597_pipe_all(r8a66597, dev); 2088 free_usb_address(r8a66597, dev); 2089 put_child_connect_map(r8a66597, addr); 2090 spin_unlock_irqrestore(&r8a66597->lock, flags); 2091 } 2092 } 2093 } 2094 } 2095 2096 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597, 2097 struct usb_hcd *hcd) 2098 { 2099 struct usb_bus *bus; 2100 unsigned long now_map[4]; 2101 2102 memset(now_map, 0, sizeof(now_map)); 2103 2104 list_for_each_entry(bus, &usb_bus_list, bus_list) { 2105 if (!bus->root_hub) 2106 continue; 2107 2108 if (bus->busnum != hcd->self.busnum) 2109 continue; 2110 2111 collect_usb_address_map(bus->root_hub, now_map); 2112 update_usb_address_map(r8a66597, bus->root_hub, now_map); 2113 } 2114 } 2115 2116 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf) 2117 { 2118 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2119 unsigned long flags; 2120 int i; 2121 2122 r8a66597_check_detect_child(r8a66597, hcd); 2123 2124 spin_lock_irqsave(&r8a66597->lock, flags); 2125 2126 *buf = 0; /* initialize (no change) */ 2127 2128 for (i = 0; i < r8a66597->max_root_hub; i++) { 2129 if (r8a66597->root_hub[i].port & 0xffff0000) 2130 *buf |= 1 << (i + 1); 2131 } 2132 2133 spin_unlock_irqrestore(&r8a66597->lock, flags); 2134 2135 return (*buf != 0); 2136 } 2137 2138 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597, 2139 struct usb_hub_descriptor *desc) 2140 { 2141 desc->bDescriptorType = 0x29; 2142 desc->bHubContrCurrent = 0; 2143 desc->bNbrPorts = r8a66597->max_root_hub; 2144 desc->bDescLength = 9; 2145 desc->bPwrOn2PwrGood = 0; 2146 desc->wHubCharacteristics = cpu_to_le16(0x0011); 2147 desc->bitmap[0] = ((1 << r8a66597->max_root_hub) - 1) << 1; 2148 desc->bitmap[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 &= ~(1 << USB_PORT_FEAT_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 |= (1 << USB_PORT_FEAT_POWER); 2224 break; 2225 case USB_PORT_FEAT_RESET: { 2226 struct r8a66597_device *dev = rh->dev; 2227 2228 rh->port |= (1 << USB_PORT_FEAT_RESET); 2229 2230 disable_r8a66597_pipe_all(r8a66597, dev); 2231 free_usb_address(r8a66597, dev); 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 dbg("%s", __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 & (1 << USB_PORT_FEAT_ENABLE))) 2267 continue; 2268 2269 dbg("suspend port = %d", port); 2270 r8a66597_bclr(r8a66597, UACT, dvstctr_reg); /* suspend */ 2271 rh->port |= 1 << USB_PORT_FEAT_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 dbg("%s", __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 & (1 << USB_PORT_FEAT_SUSPEND))) 2298 continue; 2299 2300 dbg("resume port = %d", port); 2301 rh->port &= ~(1 << USB_PORT_FEAT_SUSPEND); 2302 rh->port |= 1 << USB_PORT_FEAT_C_SUSPEND; 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 dbg("%s", __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 dbg("%s", __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 __init_or_module r8a66597_remove(struct platform_device *pdev) 2395 { 2396 struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev); 2397 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2398 2399 del_timer_sync(&r8a66597->rh_timer); 2400 usb_remove_hcd(hcd); 2401 iounmap((void *)r8a66597->reg); 2402 #ifdef CONFIG_HAVE_CLK 2403 if (r8a66597->pdata->on_chip) 2404 clk_put(r8a66597->clk); 2405 #endif 2406 usb_put_hcd(hcd); 2407 return 0; 2408 } 2409 2410 static int __devinit r8a66597_probe(struct platform_device *pdev) 2411 { 2412 #ifdef CONFIG_HAVE_CLK 2413 char clk_name[8]; 2414 #endif 2415 struct resource *res = NULL, *ires; 2416 int irq = -1; 2417 void __iomem *reg = NULL; 2418 struct usb_hcd *hcd = NULL; 2419 struct r8a66597 *r8a66597; 2420 int ret = 0; 2421 int i; 2422 unsigned long irq_trigger; 2423 2424 if (pdev->dev.dma_mask) { 2425 ret = -EINVAL; 2426 dev_err(&pdev->dev, "dma not supported\n"); 2427 goto clean_up; 2428 } 2429 2430 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 2431 if (!res) { 2432 ret = -ENODEV; 2433 dev_err(&pdev->dev, "platform_get_resource error.\n"); 2434 goto clean_up; 2435 } 2436 2437 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 2438 if (!ires) { 2439 ret = -ENODEV; 2440 dev_err(&pdev->dev, 2441 "platform_get_resource IORESOURCE_IRQ error.\n"); 2442 goto clean_up; 2443 } 2444 2445 irq = ires->start; 2446 irq_trigger = ires->flags & IRQF_TRIGGER_MASK; 2447 2448 reg = ioremap(res->start, resource_size(res)); 2449 if (reg == NULL) { 2450 ret = -ENOMEM; 2451 dev_err(&pdev->dev, "ioremap error.\n"); 2452 goto clean_up; 2453 } 2454 2455 if (pdev->dev.platform_data == NULL) { 2456 dev_err(&pdev->dev, "no platform data\n"); 2457 ret = -ENODEV; 2458 goto clean_up; 2459 } 2460 2461 /* initialize hcd */ 2462 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name); 2463 if (!hcd) { 2464 ret = -ENOMEM; 2465 dev_err(&pdev->dev, "Failed to create hcd\n"); 2466 goto clean_up; 2467 } 2468 r8a66597 = hcd_to_r8a66597(hcd); 2469 memset(r8a66597, 0, sizeof(struct r8a66597)); 2470 dev_set_drvdata(&pdev->dev, r8a66597); 2471 r8a66597->pdata = pdev->dev.platform_data; 2472 r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; 2473 2474 if (r8a66597->pdata->on_chip) { 2475 #ifdef CONFIG_HAVE_CLK 2476 snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id); 2477 r8a66597->clk = clk_get(&pdev->dev, clk_name); 2478 if (IS_ERR(r8a66597->clk)) { 2479 dev_err(&pdev->dev, "cannot get clock \"%s\"\n", 2480 clk_name); 2481 ret = PTR_ERR(r8a66597->clk); 2482 goto clean_up2; 2483 } 2484 #endif 2485 r8a66597->max_root_hub = 1; 2486 } else 2487 r8a66597->max_root_hub = 2; 2488 2489 spin_lock_init(&r8a66597->lock); 2490 init_timer(&r8a66597->rh_timer); 2491 r8a66597->rh_timer.function = r8a66597_timer; 2492 r8a66597->rh_timer.data = (unsigned long)r8a66597; 2493 r8a66597->reg = (unsigned long)reg; 2494 2495 /* make sure no interrupts are pending */ 2496 ret = r8a66597_clock_enable(r8a66597); 2497 if (ret < 0) 2498 goto clean_up3; 2499 disable_controller(r8a66597); 2500 2501 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { 2502 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]); 2503 init_timer(&r8a66597->td_timer[i]); 2504 r8a66597->td_timer[i].function = r8a66597_td_timer; 2505 r8a66597->td_timer[i].data = (unsigned long)r8a66597; 2506 setup_timer(&r8a66597->interval_timer[i], 2507 r8a66597_interval_timer, 2508 (unsigned long)r8a66597); 2509 } 2510 INIT_LIST_HEAD(&r8a66597->child_device); 2511 2512 hcd->rsrc_start = res->start; 2513 2514 ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger); 2515 if (ret != 0) { 2516 dev_err(&pdev->dev, "Failed to add hcd\n"); 2517 goto clean_up3; 2518 } 2519 2520 return 0; 2521 2522 clean_up3: 2523 #ifdef CONFIG_HAVE_CLK 2524 if (r8a66597->pdata->on_chip) 2525 clk_put(r8a66597->clk); 2526 clean_up2: 2527 #endif 2528 usb_put_hcd(hcd); 2529 2530 clean_up: 2531 if (reg) 2532 iounmap(reg); 2533 2534 return ret; 2535 } 2536 2537 static struct platform_driver r8a66597_driver = { 2538 .probe = r8a66597_probe, 2539 .remove = r8a66597_remove, 2540 .driver = { 2541 .name = (char *) hcd_name, 2542 .owner = THIS_MODULE, 2543 .pm = R8A66597_DEV_PM_OPS, 2544 }, 2545 }; 2546 2547 static int __init r8a66597_init(void) 2548 { 2549 if (usb_disabled()) 2550 return -ENODEV; 2551 2552 printk(KERN_INFO KBUILD_MODNAME ": driver %s, %s\n", hcd_name, 2553 DRIVER_VERSION); 2554 return platform_driver_register(&r8a66597_driver); 2555 } 2556 module_init(r8a66597_init); 2557 2558 static void __exit r8a66597_cleanup(void) 2559 { 2560 platform_driver_unregister(&r8a66597_driver); 2561 } 2562 module_exit(r8a66597_cleanup); 2563 2564