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/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 46MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver"); 47MODULE_LICENSE("GPL"); 48MODULE_AUTHOR("Yoshihiro Shimoda"); 49MODULE_ALIAS("platform:r8a66597_hcd"); 50 51#define DRIVER_VERSION "2009-05-26" 52 53static const char hcd_name[] = "r8a66597_hcd"; 54 55static void packet_write(struct r8a66597 *r8a66597, u16 pipenum); 56static int r8a66597_get_frame(struct usb_hcd *hcd); 57 58/* this function must be called with interrupt disabled */ 59static 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 */ 71static 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 82static 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 92static int r8a66597_clock_enable(struct r8a66597 *r8a66597) 93{ 94 u16 tmp; 95 int i = 0; 96 97 if (r8a66597->pdata->on_chip) { 98#ifdef CONFIG_HAVE_CLK 99 clk_enable(r8a66597->clk); 100#endif 101 do { 102 r8a66597_write(r8a66597, SCKE, SYSCFG0); 103 tmp = r8a66597_read(r8a66597, SYSCFG0); 104 if (i++ > 1000) { 105 printk(KERN_ERR "r8a66597: reg access fail.\n"); 106 return -ENXIO; 107 } 108 } while ((tmp & SCKE) != SCKE); 109 r8a66597_write(r8a66597, 0x04, 0x02); 110 } else { 111 do { 112 r8a66597_write(r8a66597, USBE, SYSCFG0); 113 tmp = r8a66597_read(r8a66597, SYSCFG0); 114 if (i++ > 1000) { 115 printk(KERN_ERR "r8a66597: reg access fail.\n"); 116 return -ENXIO; 117 } 118 } while ((tmp & USBE) != USBE); 119 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 120 r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata), 121 XTAL, SYSCFG0); 122 123 i = 0; 124 r8a66597_bset(r8a66597, XCKE, SYSCFG0); 125 do { 126 msleep(1); 127 tmp = r8a66597_read(r8a66597, SYSCFG0); 128 if (i++ > 500) { 129 printk(KERN_ERR "r8a66597: reg access fail.\n"); 130 return -ENXIO; 131 } 132 } while ((tmp & SCKE) != SCKE); 133 } 134 135 return 0; 136} 137 138static void r8a66597_clock_disable(struct r8a66597 *r8a66597) 139{ 140 r8a66597_bclr(r8a66597, SCKE, SYSCFG0); 141 udelay(1); 142 143 if (r8a66597->pdata->on_chip) { 144#ifdef CONFIG_HAVE_CLK 145 clk_disable(r8a66597->clk); 146#endif 147 } else { 148 r8a66597_bclr(r8a66597, PLLC, SYSCFG0); 149 r8a66597_bclr(r8a66597, XCKE, SYSCFG0); 150 r8a66597_bclr(r8a66597, USBE, SYSCFG0); 151 } 152} 153 154static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port) 155{ 156 u16 val; 157 158 val = port ? DRPD : DCFM | DRPD; 159 r8a66597_bset(r8a66597, val, get_syscfg_reg(port)); 160 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 161 162 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port)); 163 r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port)); 164 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 165} 166 167static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port) 168{ 169 u16 val, tmp; 170 171 r8a66597_write(r8a66597, 0, get_intenb_reg(port)); 172 r8a66597_write(r8a66597, 0, get_intsts_reg(port)); 173 174 r8a66597_port_power(r8a66597, port, 0); 175 176 do { 177 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS; 178 udelay(640); 179 } while (tmp == EDGESTS); 180 181 val = port ? DRPD : DCFM | DRPD; 182 r8a66597_bclr(r8a66597, val, get_syscfg_reg(port)); 183 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 184} 185 186static int enable_controller(struct r8a66597 *r8a66597) 187{ 188 int ret, port; 189 u16 vif = r8a66597->pdata->vif ? LDRV : 0; 190 u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0; 191 u16 endian = r8a66597->pdata->endian ? BIGEND : 0; 192 193 ret = r8a66597_clock_enable(r8a66597); 194 if (ret < 0) 195 return ret; 196 197 r8a66597_bset(r8a66597, vif & LDRV, PINCFG); 198 r8a66597_bset(r8a66597, USBE, SYSCFG0); 199 200 r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); 201 r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG); 202 r8a66597_bset(r8a66597, BRDY0, BRDYENB); 203 r8a66597_bset(r8a66597, BEMP0, BEMPENB); 204 205 r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL); 206 r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL); 207 r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL); 208 r8a66597_bset(r8a66597, TRNENSEL, SOFCFG); 209 210 r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1); 211 212 for (port = 0; port < r8a66597->max_root_hub; port++) 213 r8a66597_enable_port(r8a66597, port); 214 215 return 0; 216} 217 218static void disable_controller(struct r8a66597 *r8a66597) 219{ 220 int port; 221 222 /* disable interrupts */ 223 r8a66597_write(r8a66597, 0, INTENB0); 224 r8a66597_write(r8a66597, 0, INTENB1); 225 r8a66597_write(r8a66597, 0, BRDYENB); 226 r8a66597_write(r8a66597, 0, BEMPENB); 227 r8a66597_write(r8a66597, 0, NRDYENB); 228 229 /* clear status */ 230 r8a66597_write(r8a66597, 0, BRDYSTS); 231 r8a66597_write(r8a66597, 0, NRDYSTS); 232 r8a66597_write(r8a66597, 0, BEMPSTS); 233 234 for (port = 0; port < r8a66597->max_root_hub; port++) 235 r8a66597_disable_port(r8a66597, port); 236 237 r8a66597_clock_disable(r8a66597); 238} 239 240static int get_parent_r8a66597_address(struct r8a66597 *r8a66597, 241 struct usb_device *udev) 242{ 243 struct r8a66597_device *dev; 244 245 if (udev->parent && udev->parent->devnum != 1) 246 udev = udev->parent; 247 248 dev = dev_get_drvdata(&udev->dev); 249 if (dev) 250 return dev->address; 251 else 252 return 0; 253} 254 255static int is_child_device(char *devpath) 256{ 257 return (devpath[2] ? 1 : 0); 258} 259 260static int is_hub_limit(char *devpath) 261{ 262 return ((strlen(devpath) >= 4) ? 1 : 0); 263} 264 265static void get_port_number(struct r8a66597 *r8a66597, 266 char *devpath, u16 *root_port, u16 *hub_port) 267{ 268 if (root_port) { 269 *root_port = (devpath[0] & 0x0F) - 1; 270 if (*root_port >= r8a66597->max_root_hub) 271 printk(KERN_ERR "r8a66597: Illegal root port number.\n"); 272 } 273 if (hub_port) 274 *hub_port = devpath[2] & 0x0F; 275} 276 277static u16 get_r8a66597_usb_speed(enum usb_device_speed speed) 278{ 279 u16 usbspd = 0; 280 281 switch (speed) { 282 case USB_SPEED_LOW: 283 usbspd = LSMODE; 284 break; 285 case USB_SPEED_FULL: 286 usbspd = FSMODE; 287 break; 288 case USB_SPEED_HIGH: 289 usbspd = HSMODE; 290 break; 291 default: 292 printk(KERN_ERR "r8a66597: unknown speed\n"); 293 break; 294 } 295 296 return usbspd; 297} 298 299static void set_child_connect_map(struct r8a66597 *r8a66597, int address) 300{ 301 int idx; 302 303 idx = address / 32; 304 r8a66597->child_connect_map[idx] |= 1 << (address % 32); 305} 306 307static void put_child_connect_map(struct r8a66597 *r8a66597, int address) 308{ 309 int idx; 310 311 idx = address / 32; 312 r8a66597->child_connect_map[idx] &= ~(1 << (address % 32)); 313} 314 315static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch) 316{ 317 u16 pipenum = pipe->info.pipenum; 318 const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO}; 319 const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL}; 320 const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR}; 321 322 if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */ 323 dma_ch = R8A66597_PIPE_NO_DMA; 324 325 pipe->fifoaddr = fifoaddr[dma_ch]; 326 pipe->fifosel = fifosel[dma_ch]; 327 pipe->fifoctr = fifoctr[dma_ch]; 328 329 if (pipenum == 0) 330 pipe->pipectr = DCPCTR; 331 else 332 pipe->pipectr = get_pipectr_addr(pipenum); 333 334 if (check_bulk_or_isoc(pipenum)) { 335 pipe->pipetre = get_pipetre_addr(pipenum); 336 pipe->pipetrn = get_pipetrn_addr(pipenum); 337 } else { 338 pipe->pipetre = 0; 339 pipe->pipetrn = 0; 340 } 341} 342 343static struct r8a66597_device * 344get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb) 345{ 346 if (usb_pipedevice(urb->pipe) == 0) 347 return &r8a66597->device0; 348 349 return dev_get_drvdata(&urb->dev->dev); 350} 351 352static int make_r8a66597_device(struct r8a66597 *r8a66597, 353 struct urb *urb, u8 addr) 354{ 355 struct r8a66597_device *dev; 356 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */ 357 358 dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC); 359 if (dev == NULL) 360 return -ENOMEM; 361 362 dev_set_drvdata(&urb->dev->dev, dev); 363 dev->udev = urb->dev; 364 dev->address = addr; 365 dev->usb_address = usb_address; 366 dev->state = USB_STATE_ADDRESS; 367 dev->ep_in_toggle = 0; 368 dev->ep_out_toggle = 0; 369 INIT_LIST_HEAD(&dev->device_list); 370 list_add_tail(&dev->device_list, &r8a66597->child_device); 371 372 get_port_number(r8a66597, urb->dev->devpath, 373 &dev->root_port, &dev->hub_port); 374 if (!is_child_device(urb->dev->devpath)) 375 r8a66597->root_hub[dev->root_port].dev = dev; 376 377 set_devadd_reg(r8a66597, dev->address, 378 get_r8a66597_usb_speed(urb->dev->speed), 379 get_parent_r8a66597_address(r8a66597, urb->dev), 380 dev->hub_port, dev->root_port); 381 382 return 0; 383} 384 385/* this function must be called with interrupt disabled */ 386static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb) 387{ 388 u8 addr; /* R8A66597's address */ 389 struct r8a66597_device *dev; 390 391 if (is_hub_limit(urb->dev->devpath)) { 392 dev_err(&urb->dev->dev, "External hub limit reached.\n"); 393 return 0; 394 } 395 396 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 397 if (dev && dev->state >= USB_STATE_ADDRESS) 398 return dev->address; 399 400 for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) { 401 if (r8a66597->address_map & (1 << addr)) 402 continue; 403 404 dbg("alloc_address: r8a66597_addr=%d", addr); 405 r8a66597->address_map |= 1 << addr; 406 407 if (make_r8a66597_device(r8a66597, urb, addr) < 0) 408 return 0; 409 410 return addr; 411 } 412 413 dev_err(&urb->dev->dev, 414 "cannot communicate with a USB device more than 10.(%x)\n", 415 r8a66597->address_map); 416 417 return 0; 418} 419 420/* this function must be called with interrupt disabled */ 421static void free_usb_address(struct r8a66597 *r8a66597, 422 struct r8a66597_device *dev, int reset) 423{ 424 int port; 425 426 if (!dev) 427 return; 428 429 dbg("free_addr: addr=%d", dev->address); 430 431 dev->state = USB_STATE_DEFAULT; 432 r8a66597->address_map &= ~(1 << dev->address); 433 dev->address = 0; 434 /* 435 * Only when resetting USB, it is necessary to erase drvdata. When 436 * a usb device with usb hub is disconnect, "dev->udev" is already 437 * freed on usb_desconnect(). So we cannot access the data. 438 */ 439 if (reset) 440 dev_set_drvdata(&dev->udev->dev, NULL); 441 list_del(&dev->device_list); 442 kfree(dev); 443 444 for (port = 0; port < r8a66597->max_root_hub; port++) { 445 if (r8a66597->root_hub[port].dev == dev) { 446 r8a66597->root_hub[port].dev = NULL; 447 break; 448 } 449 } 450} 451 452static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg, 453 u16 mask, u16 loop) 454{ 455 u16 tmp; 456 int i = 0; 457 458 do { 459 tmp = r8a66597_read(r8a66597, reg); 460 if (i++ > 1000000) { 461 printk(KERN_ERR "r8a66597: register%lx, loop %x " 462 "is timeout\n", reg, loop); 463 break; 464 } 465 ndelay(1); 466 } while ((tmp & mask) != loop); 467} 468 469/* this function must be called with interrupt disabled */ 470static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 471{ 472 u16 tmp; 473 474 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 475 if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */ 476 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 477 r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr); 478} 479 480/* this function must be called with interrupt disabled */ 481static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) 482{ 483 u16 tmp; 484 485 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; 486 if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */ 487 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr); 488 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); 489 r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0); 490} 491 492/* this function must be called with interrupt disabled */ 493static void clear_all_buffer(struct r8a66597 *r8a66597, 494 struct r8a66597_pipe *pipe) 495{ 496 u16 tmp; 497 498 if (!pipe || pipe->info.pipenum == 0) 499 return; 500 501 pipe_stop(r8a66597, pipe); 502 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr); 503 tmp = r8a66597_read(r8a66597, pipe->pipectr); 504 tmp = r8a66597_read(r8a66597, pipe->pipectr); 505 tmp = r8a66597_read(r8a66597, pipe->pipectr); 506 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr); 507} 508 509/* this function must be called with interrupt disabled */ 510static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597, 511 struct r8a66597_pipe *pipe, int toggle) 512{ 513 if (toggle) 514 r8a66597_bset(r8a66597, SQSET, pipe->pipectr); 515 else 516 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr); 517} 518 519static inline unsigned short mbw_value(struct r8a66597 *r8a66597) 520{ 521 if (r8a66597->pdata->on_chip) 522 return MBW_32; 523 else 524 return MBW_16; 525} 526 527/* this function must be called with interrupt disabled */ 528static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum) 529{ 530 unsigned short mbw = mbw_value(r8a66597); 531 532 r8a66597_mdfy(r8a66597, mbw | pipenum, mbw | CURPIPE, CFIFOSEL); 533 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum); 534} 535 536/* this function must be called with interrupt disabled */ 537static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597, 538 struct r8a66597_pipe *pipe) 539{ 540 unsigned short mbw = mbw_value(r8a66597); 541 542 cfifo_change(r8a66597, 0); 543 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D0FIFOSEL); 544 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D1FIFOSEL); 545 546 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, mbw | CURPIPE, 547 pipe->fifosel); 548 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum); 549} 550 551static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep) 552{ 553 struct r8a66597_pipe *pipe = hep->hcpriv; 554 555 if (usb_pipeendpoint(urb->pipe) == 0) 556 return 0; 557 else 558 return pipe->info.pipenum; 559} 560 561static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb) 562{ 563 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 564 565 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address; 566} 567 568static unsigned short *get_toggle_pointer(struct r8a66597_device *dev, 569 int urb_pipe) 570{ 571 if (!dev) 572 return NULL; 573 574 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle; 575} 576 577/* this function must be called with interrupt disabled */ 578static void pipe_toggle_set(struct r8a66597 *r8a66597, 579 struct r8a66597_pipe *pipe, 580 struct urb *urb, int set) 581{ 582 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 583 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 584 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 585 586 if (!toggle) 587 return; 588 589 if (set) 590 *toggle |= 1 << endpoint; 591 else 592 *toggle &= ~(1 << endpoint); 593} 594 595/* this function must be called with interrupt disabled */ 596static void pipe_toggle_save(struct r8a66597 *r8a66597, 597 struct r8a66597_pipe *pipe, 598 struct urb *urb) 599{ 600 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON) 601 pipe_toggle_set(r8a66597, pipe, urb, 1); 602 else 603 pipe_toggle_set(r8a66597, pipe, urb, 0); 604} 605 606/* this function must be called with interrupt disabled */ 607static void pipe_toggle_restore(struct r8a66597 *r8a66597, 608 struct r8a66597_pipe *pipe, 609 struct urb *urb) 610{ 611 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 612 unsigned char endpoint = usb_pipeendpoint(urb->pipe); 613 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); 614 615 if (!toggle) 616 return; 617 618 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint)); 619} 620 621/* this function must be called with interrupt disabled */ 622static void pipe_buffer_setting(struct r8a66597 *r8a66597, 623 struct r8a66597_pipe_info *info) 624{ 625 u16 val = 0; 626 627 if (info->pipenum == 0) 628 return; 629 630 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 631 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); 632 r8a66597_write(r8a66597, info->pipenum, PIPESEL); 633 if (!info->dir_in) 634 val |= R8A66597_DIR; 635 if (info->type == R8A66597_BULK && info->dir_in) 636 val |= R8A66597_DBLB | R8A66597_SHTNAK; 637 val |= info->type | info->epnum; 638 r8a66597_write(r8a66597, val, PIPECFG); 639 640 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum), 641 PIPEBUF); 642 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket, 643 PIPEMAXP); 644 r8a66597_write(r8a66597, info->interval, PIPEPERI); 645} 646 647/* this function must be called with interrupt disabled */ 648static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td) 649{ 650 struct r8a66597_pipe_info *info; 651 struct urb *urb = td->urb; 652 653 if (td->pipenum > 0) { 654 info = &td->pipe->info; 655 cfifo_change(r8a66597, 0); 656 pipe_buffer_setting(r8a66597, info); 657 658 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), 659 usb_pipeout(urb->pipe)) && 660 !usb_pipecontrol(urb->pipe)) { 661 r8a66597_pipe_toggle(r8a66597, td->pipe, 0); 662 pipe_toggle_set(r8a66597, td->pipe, urb, 0); 663 clear_all_buffer(r8a66597, td->pipe); 664 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), 665 usb_pipeout(urb->pipe), 1); 666 } 667 pipe_toggle_restore(r8a66597, td->pipe, urb); 668 } 669} 670 671/* this function must be called with interrupt disabled */ 672static u16 get_empty_pipenum(struct r8a66597 *r8a66597, 673 struct usb_endpoint_descriptor *ep) 674{ 675 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min; 676 677 memset(array, 0, sizeof(array)); 678 switch (usb_endpoint_type(ep)) { 679 case USB_ENDPOINT_XFER_BULK: 680 if (usb_endpoint_dir_in(ep)) 681 array[i++] = 4; 682 else { 683 array[i++] = 3; 684 array[i++] = 5; 685 } 686 break; 687 case USB_ENDPOINT_XFER_INT: 688 if (usb_endpoint_dir_in(ep)) { 689 array[i++] = 6; 690 array[i++] = 7; 691 array[i++] = 8; 692 } else 693 array[i++] = 9; 694 break; 695 case USB_ENDPOINT_XFER_ISOC: 696 if (usb_endpoint_dir_in(ep)) 697 array[i++] = 2; 698 else 699 array[i++] = 1; 700 break; 701 default: 702 printk(KERN_ERR "r8a66597: Illegal type\n"); 703 return 0; 704 } 705 706 i = 1; 707 min = array[0]; 708 while (array[i] != 0) { 709 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]]) 710 min = array[i]; 711 i++; 712 } 713 714 return min; 715} 716 717static u16 get_r8a66597_type(__u8 type) 718{ 719 u16 r8a66597_type; 720 721 switch (type) { 722 case USB_ENDPOINT_XFER_BULK: 723 r8a66597_type = R8A66597_BULK; 724 break; 725 case USB_ENDPOINT_XFER_INT: 726 r8a66597_type = R8A66597_INT; 727 break; 728 case USB_ENDPOINT_XFER_ISOC: 729 r8a66597_type = R8A66597_ISO; 730 break; 731 default: 732 printk(KERN_ERR "r8a66597: Illegal type\n"); 733 r8a66597_type = 0x0000; 734 break; 735 } 736 737 return r8a66597_type; 738} 739 740static u16 get_bufnum(u16 pipenum) 741{ 742 u16 bufnum = 0; 743 744 if (pipenum == 0) 745 bufnum = 0; 746 else if (check_bulk_or_isoc(pipenum)) 747 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2; 748 else if (check_interrupt(pipenum)) 749 bufnum = 4 + (pipenum - 6); 750 else 751 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); 752 753 return bufnum; 754} 755 756static u16 get_buf_bsize(u16 pipenum) 757{ 758 u16 buf_bsize = 0; 759 760 if (pipenum == 0) 761 buf_bsize = 3; 762 else if (check_bulk_or_isoc(pipenum)) 763 buf_bsize = R8A66597_BUF_BSIZE - 1; 764 else if (check_interrupt(pipenum)) 765 buf_bsize = 0; 766 else 767 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); 768 769 return buf_bsize; 770} 771 772/* this function must be called with interrupt disabled */ 773static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597, 774 struct r8a66597_device *dev, 775 struct r8a66597_pipe *pipe, 776 struct urb *urb) 777{ 778 int i; 779 struct r8a66597_pipe_info *info = &pipe->info; 780 unsigned short mbw = mbw_value(r8a66597); 781 782 /* pipe dma is only for external controlles */ 783 if (r8a66597->pdata->on_chip) 784 return; 785 786 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) { 787 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) { 788 if ((r8a66597->dma_map & (1 << i)) != 0) 789 continue; 790 791 dev_info(&dev->udev->dev, 792 "address %d, EndpointAddress 0x%02x use " 793 "DMA FIFO\n", usb_pipedevice(urb->pipe), 794 info->dir_in ? 795 USB_ENDPOINT_DIR_MASK + info->epnum 796 : info->epnum); 797 798 r8a66597->dma_map |= 1 << i; 799 dev->dma_map |= 1 << i; 800 set_pipe_reg_addr(pipe, i); 801 802 cfifo_change(r8a66597, 0); 803 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, 804 mbw | CURPIPE, pipe->fifosel); 805 806 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, 807 pipe->info.pipenum); 808 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr); 809 break; 810 } 811 } 812} 813 814/* this function must be called with interrupt disabled */ 815static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb, 816 struct usb_host_endpoint *hep, 817 struct r8a66597_pipe_info *info) 818{ 819 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 820 struct r8a66597_pipe *pipe = hep->hcpriv; 821 822 dbg("enable_pipe:"); 823 824 pipe->info = *info; 825 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA); 826 r8a66597->pipe_cnt[pipe->info.pipenum]++; 827 dev->pipe_cnt[pipe->info.pipenum]++; 828 829 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb); 830} 831 832static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb, 833 int status) 834__releases(r8a66597->lock) 835__acquires(r8a66597->lock) 836{ 837 if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) { 838 void *ptr; 839 840 for (ptr = urb->transfer_buffer; 841 ptr < urb->transfer_buffer + urb->transfer_buffer_length; 842 ptr += PAGE_SIZE) 843 flush_dcache_page(virt_to_page(ptr)); 844 } 845 846 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb); 847 spin_unlock(&r8a66597->lock); 848 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status); 849 spin_lock(&r8a66597->lock); 850} 851 852/* this function must be called with interrupt disabled */ 853static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address) 854{ 855 struct r8a66597_td *td, *next; 856 struct urb *urb; 857 struct list_head *list = &r8a66597->pipe_queue[pipenum]; 858 859 if (list_empty(list)) 860 return; 861 862 list_for_each_entry_safe(td, next, list, queue) { 863 if (td->address != address) 864 continue; 865 866 urb = td->urb; 867 list_del(&td->queue); 868 kfree(td); 869 870 if (urb) 871 r8a66597_urb_done(r8a66597, urb, -ENODEV); 872 873 break; 874 } 875} 876 877/* this function must be called with interrupt disabled */ 878static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597, 879 struct r8a66597_device *dev) 880{ 881 int check_ep0 = 0; 882 u16 pipenum; 883 884 if (!dev) 885 return; 886 887 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 888 if (!dev->pipe_cnt[pipenum]) 889 continue; 890 891 if (!check_ep0) { 892 check_ep0 = 1; 893 force_dequeue(r8a66597, 0, dev->address); 894 } 895 896 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum]; 897 dev->pipe_cnt[pipenum] = 0; 898 force_dequeue(r8a66597, pipenum, dev->address); 899 } 900 901 dbg("disable_pipe"); 902 903 r8a66597->dma_map &= ~(dev->dma_map); 904 dev->dma_map = 0; 905} 906 907static u16 get_interval(struct urb *urb, __u8 interval) 908{ 909 u16 time = 1; 910 int i; 911 912 if (urb->dev->speed == USB_SPEED_HIGH) { 913 if (interval > IITV) 914 time = IITV; 915 else 916 time = interval ? interval - 1 : 0; 917 } else { 918 if (interval > 128) { 919 time = IITV; 920 } else { 921 /* calculate the nearest value for PIPEPERI */ 922 for (i = 0; i < 7; i++) { 923 if ((1 << i) < interval && 924 (1 << (i + 1) > interval)) 925 time = 1 << i; 926 } 927 } 928 } 929 930 return time; 931} 932 933static unsigned long get_timer_interval(struct urb *urb, __u8 interval) 934{ 935 __u8 i; 936 unsigned long time = 1; 937 938 if (usb_pipeisoc(urb->pipe)) 939 return 0; 940 941 if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) { 942 for (i = 0; i < (interval - 1); i++) 943 time *= 2; 944 time = time * 125 / 1000; /* uSOF -> msec */ 945 } else { 946 time = interval; 947 } 948 949 return time; 950} 951 952/* this function must be called with interrupt disabled */ 953static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb, 954 struct usb_host_endpoint *hep, 955 struct usb_endpoint_descriptor *ep) 956{ 957 struct r8a66597_pipe_info info; 958 959 info.pipenum = get_empty_pipenum(r8a66597, ep); 960 info.address = get_urb_to_r8a66597_addr(r8a66597, urb); 961 info.epnum = usb_endpoint_num(ep); 962 info.maxpacket = le16_to_cpu(ep->wMaxPacketSize); 963 info.type = get_r8a66597_type(usb_endpoint_type(ep)); 964 info.bufnum = get_bufnum(info.pipenum); 965 info.buf_bsize = get_buf_bsize(info.pipenum); 966 if (info.type == R8A66597_BULK) { 967 info.interval = 0; 968 info.timer_interval = 0; 969 } else { 970 info.interval = get_interval(urb, ep->bInterval); 971 info.timer_interval = get_timer_interval(urb, ep->bInterval); 972 } 973 if (usb_endpoint_dir_in(ep)) 974 info.dir_in = 1; 975 else 976 info.dir_in = 0; 977 978 enable_r8a66597_pipe(r8a66597, urb, hep, &info); 979} 980 981static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 982{ 983 struct r8a66597_device *dev; 984 985 dev = get_urb_to_r8a66597_dev(r8a66597, urb); 986 dev->state = USB_STATE_CONFIGURED; 987} 988 989static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb, 990 u16 pipenum) 991{ 992 if (pipenum == 0 && usb_pipeout(urb->pipe)) 993 enable_irq_empty(r8a66597, pipenum); 994 else 995 enable_irq_ready(r8a66597, pipenum); 996 997 if (!usb_pipeisoc(urb->pipe)) 998 enable_irq_nrdy(r8a66597, pipenum); 999} 1000 1001static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum) 1002{ 1003 disable_irq_ready(r8a66597, pipenum); 1004 disable_irq_nrdy(r8a66597, pipenum); 1005} 1006 1007static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597) 1008{ 1009 mod_timer(&r8a66597->rh_timer, 1010 jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME)); 1011} 1012 1013static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port, 1014 int connect) 1015{ 1016 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1017 1018 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1019 rh->scount = R8A66597_MAX_SAMPLING; 1020 if (connect) 1021 rh->port |= USB_PORT_STAT_CONNECTION; 1022 else 1023 rh->port &= ~USB_PORT_STAT_CONNECTION; 1024 rh->port |= USB_PORT_STAT_C_CONNECTION << 16; 1025 1026 r8a66597_root_hub_start_polling(r8a66597); 1027} 1028 1029/* this function must be called with interrupt disabled */ 1030static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port, 1031 u16 syssts) 1032__releases(r8a66597->lock) 1033__acquires(r8a66597->lock) 1034{ 1035 if (syssts == SE0) { 1036 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1037 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1038 } else { 1039 if (syssts == FS_JSTS) 1040 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); 1041 else if (syssts == LS_JSTS) 1042 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); 1043 1044 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port)); 1045 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port)); 1046 1047 if (r8a66597->bus_suspended) 1048 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1049 } 1050 1051 spin_unlock(&r8a66597->lock); 1052 usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597)); 1053 spin_lock(&r8a66597->lock); 1054} 1055 1056/* this function must be called with interrupt disabled */ 1057static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port) 1058{ 1059 u16 speed = get_rh_usb_speed(r8a66597, port); 1060 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1061 1062 rh->port &= ~(USB_PORT_STAT_HIGH_SPEED | USB_PORT_STAT_LOW_SPEED); 1063 if (speed == HSMODE) 1064 rh->port |= USB_PORT_STAT_HIGH_SPEED; 1065 else if (speed == LSMODE) 1066 rh->port |= USB_PORT_STAT_LOW_SPEED; 1067 1068 rh->port &= ~USB_PORT_STAT_RESET; 1069 rh->port |= USB_PORT_STAT_ENABLE; 1070} 1071 1072/* this function must be called with interrupt disabled */ 1073static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port) 1074{ 1075 struct r8a66597_device *dev = r8a66597->root_hub[port].dev; 1076 1077 disable_r8a66597_pipe_all(r8a66597, dev); 1078 free_usb_address(r8a66597, dev, 0); 1079 1080 start_root_hub_sampling(r8a66597, port, 0); 1081} 1082 1083/* this function must be called with interrupt disabled */ 1084static void prepare_setup_packet(struct r8a66597 *r8a66597, 1085 struct r8a66597_td *td) 1086{ 1087 int i; 1088 __le16 *p = (__le16 *)td->urb->setup_packet; 1089 unsigned long setup_addr = USBREQ; 1090 1091 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket, 1092 DCPMAXP); 1093 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1); 1094 1095 for (i = 0; i < 4; i++) { 1096 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr); 1097 setup_addr += 2; 1098 } 1099 r8a66597_write(r8a66597, SUREQ, DCPCTR); 1100} 1101 1102/* this function must be called with interrupt disabled */ 1103static void prepare_packet_read(struct r8a66597 *r8a66597, 1104 struct r8a66597_td *td) 1105{ 1106 struct urb *urb = td->urb; 1107 1108 if (usb_pipecontrol(urb->pipe)) { 1109 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1110 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1111 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1112 if (urb->actual_length == 0) { 1113 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1114 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1115 } 1116 pipe_irq_disable(r8a66597, td->pipenum); 1117 pipe_start(r8a66597, td->pipe); 1118 pipe_irq_enable(r8a66597, urb, td->pipenum); 1119 } else { 1120 if (urb->actual_length == 0) { 1121 pipe_irq_disable(r8a66597, td->pipenum); 1122 pipe_setting(r8a66597, td); 1123 pipe_stop(r8a66597, td->pipe); 1124 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1125 1126 if (td->pipe->pipetre) { 1127 r8a66597_write(r8a66597, TRCLR, 1128 td->pipe->pipetre); 1129 r8a66597_write(r8a66597, 1130 DIV_ROUND_UP 1131 (urb->transfer_buffer_length, 1132 td->maxpacket), 1133 td->pipe->pipetrn); 1134 r8a66597_bset(r8a66597, TRENB, 1135 td->pipe->pipetre); 1136 } 1137 1138 pipe_start(r8a66597, td->pipe); 1139 pipe_irq_enable(r8a66597, urb, td->pipenum); 1140 } 1141 } 1142} 1143 1144/* this function must be called with interrupt disabled */ 1145static void prepare_packet_write(struct r8a66597 *r8a66597, 1146 struct r8a66597_td *td) 1147{ 1148 u16 tmp; 1149 struct urb *urb = td->urb; 1150 1151 if (usb_pipecontrol(urb->pipe)) { 1152 pipe_stop(r8a66597, td->pipe); 1153 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1154 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1155 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1156 if (urb->actual_length == 0) { 1157 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1158 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1159 } 1160 } else { 1161 if (urb->actual_length == 0) 1162 pipe_setting(r8a66597, td); 1163 if (td->pipe->pipetre) 1164 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre); 1165 } 1166 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); 1167 1168 fifo_change_from_pipe(r8a66597, td->pipe); 1169 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1170 if (unlikely((tmp & FRDY) == 0)) 1171 pipe_irq_enable(r8a66597, urb, td->pipenum); 1172 else 1173 packet_write(r8a66597, td->pipenum); 1174 pipe_start(r8a66597, td->pipe); 1175} 1176 1177/* this function must be called with interrupt disabled */ 1178static void prepare_status_packet(struct r8a66597 *r8a66597, 1179 struct r8a66597_td *td) 1180{ 1181 struct urb *urb = td->urb; 1182 1183 r8a66597_pipe_toggle(r8a66597, td->pipe, 1); 1184 pipe_stop(r8a66597, td->pipe); 1185 1186 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) { 1187 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); 1188 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); 1189 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1190 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); 1191 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR); 1192 enable_irq_empty(r8a66597, 0); 1193 } else { 1194 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); 1195 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); 1196 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); 1197 r8a66597_write(r8a66597, BCLR, CFIFOCTR); 1198 enable_irq_ready(r8a66597, 0); 1199 } 1200 enable_irq_nrdy(r8a66597, 0); 1201 pipe_start(r8a66597, td->pipe); 1202} 1203 1204static int is_set_address(unsigned char *setup_packet) 1205{ 1206 if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) && 1207 setup_packet[1] == USB_REQ_SET_ADDRESS) 1208 return 1; 1209 else 1210 return 0; 1211} 1212 1213/* this function must be called with interrupt disabled */ 1214static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1215{ 1216 BUG_ON(!td); 1217 1218 switch (td->type) { 1219 case USB_PID_SETUP: 1220 if (is_set_address(td->urb->setup_packet)) { 1221 td->set_address = 1; 1222 td->urb->setup_packet[2] = alloc_usb_address(r8a66597, 1223 td->urb); 1224 if (td->urb->setup_packet[2] == 0) 1225 return -EPIPE; 1226 } 1227 prepare_setup_packet(r8a66597, td); 1228 break; 1229 case USB_PID_IN: 1230 prepare_packet_read(r8a66597, td); 1231 break; 1232 case USB_PID_OUT: 1233 prepare_packet_write(r8a66597, td); 1234 break; 1235 case USB_PID_ACK: 1236 prepare_status_packet(r8a66597, td); 1237 break; 1238 default: 1239 printk(KERN_ERR "r8a66597: invalid type.\n"); 1240 break; 1241 } 1242 1243 return 0; 1244} 1245 1246static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb) 1247{ 1248 if (usb_pipeisoc(urb->pipe)) { 1249 if (urb->number_of_packets == td->iso_cnt) 1250 return 1; 1251 } 1252 1253 /* control or bulk or interrupt */ 1254 if ((urb->transfer_buffer_length <= urb->actual_length) || 1255 (td->short_packet) || (td->zero_packet)) 1256 return 1; 1257 1258 return 0; 1259} 1260 1261/* this function must be called with interrupt disabled */ 1262static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td) 1263{ 1264 unsigned long time; 1265 1266 BUG_ON(!td); 1267 1268 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) && 1269 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) { 1270 r8a66597->timeout_map |= 1 << td->pipenum; 1271 switch (usb_pipetype(td->urb->pipe)) { 1272 case PIPE_INTERRUPT: 1273 case PIPE_ISOCHRONOUS: 1274 time = 30; 1275 break; 1276 default: 1277 time = 300; 1278 break; 1279 } 1280 1281 mod_timer(&r8a66597->td_timer[td->pipenum], 1282 jiffies + msecs_to_jiffies(time)); 1283 } 1284} 1285 1286/* this function must be called with interrupt disabled */ 1287static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td, 1288 u16 pipenum, struct urb *urb, int status) 1289__releases(r8a66597->lock) __acquires(r8a66597->lock) 1290{ 1291 int restart = 0; 1292 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 1293 1294 r8a66597->timeout_map &= ~(1 << pipenum); 1295 1296 if (likely(td)) { 1297 if (td->set_address && (status != 0 || urb->unlinked)) 1298 r8a66597->address_map &= ~(1 << urb->setup_packet[2]); 1299 1300 pipe_toggle_save(r8a66597, td->pipe, urb); 1301 list_del(&td->queue); 1302 kfree(td); 1303 } 1304 1305 if (!list_empty(&r8a66597->pipe_queue[pipenum])) 1306 restart = 1; 1307 1308 if (likely(urb)) { 1309 if (usb_pipeisoc(urb->pipe)) 1310 urb->start_frame = r8a66597_get_frame(hcd); 1311 1312 r8a66597_urb_done(r8a66597, urb, status); 1313 } 1314 1315 if (restart) { 1316 td = r8a66597_get_td(r8a66597, pipenum); 1317 if (unlikely(!td)) 1318 return; 1319 1320 start_transfer(r8a66597, td); 1321 set_td_timer(r8a66597, td); 1322 } 1323} 1324 1325static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) 1326{ 1327 u16 tmp; 1328 int rcv_len, bufsize, urb_len, size; 1329 u16 *buf; 1330 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1331 struct urb *urb; 1332 int finish = 0; 1333 int status = 0; 1334 1335 if (unlikely(!td)) 1336 return; 1337 urb = td->urb; 1338 1339 fifo_change_from_pipe(r8a66597, td->pipe); 1340 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1341 if (unlikely((tmp & FRDY) == 0)) { 1342 pipe_stop(r8a66597, td->pipe); 1343 pipe_irq_disable(r8a66597, pipenum); 1344 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum); 1345 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE); 1346 return; 1347 } 1348 1349 /* prepare parameters */ 1350 rcv_len = tmp & DTLN; 1351 if (usb_pipeisoc(urb->pipe)) { 1352 buf = (u16 *)(urb->transfer_buffer + 1353 urb->iso_frame_desc[td->iso_cnt].offset); 1354 urb_len = urb->iso_frame_desc[td->iso_cnt].length; 1355 } else { 1356 buf = (void *)urb->transfer_buffer + urb->actual_length; 1357 urb_len = urb->transfer_buffer_length - urb->actual_length; 1358 } 1359 bufsize = min(urb_len, (int) td->maxpacket); 1360 if (rcv_len <= bufsize) { 1361 size = rcv_len; 1362 } else { 1363 size = bufsize; 1364 status = -EOVERFLOW; 1365 finish = 1; 1366 } 1367 1368 /* update parameters */ 1369 urb->actual_length += size; 1370 if (rcv_len == 0) 1371 td->zero_packet = 1; 1372 if (rcv_len < bufsize) { 1373 td->short_packet = 1; 1374 } 1375 if (usb_pipeisoc(urb->pipe)) { 1376 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1377 urb->iso_frame_desc[td->iso_cnt].status = status; 1378 td->iso_cnt++; 1379 finish = 0; 1380 } 1381 1382 /* check transfer finish */ 1383 if (finish || check_transfer_finish(td, urb)) { 1384 pipe_stop(r8a66597, td->pipe); 1385 pipe_irq_disable(r8a66597, pipenum); 1386 finish = 1; 1387 } 1388 1389 /* read fifo */ 1390 if (urb->transfer_buffer) { 1391 if (size == 0) 1392 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr); 1393 else 1394 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr, 1395 buf, size); 1396 } 1397 1398 if (finish && pipenum != 0) 1399 finish_request(r8a66597, td, pipenum, urb, status); 1400} 1401 1402static void packet_write(struct r8a66597 *r8a66597, u16 pipenum) 1403{ 1404 u16 tmp; 1405 int bufsize, size; 1406 u16 *buf; 1407 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1408 struct urb *urb; 1409 1410 if (unlikely(!td)) 1411 return; 1412 urb = td->urb; 1413 1414 fifo_change_from_pipe(r8a66597, td->pipe); 1415 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); 1416 if (unlikely((tmp & FRDY) == 0)) { 1417 pipe_stop(r8a66597, td->pipe); 1418 pipe_irq_disable(r8a66597, pipenum); 1419 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum); 1420 finish_request(r8a66597, td, pipenum, urb, -EPIPE); 1421 return; 1422 } 1423 1424 /* prepare parameters */ 1425 bufsize = td->maxpacket; 1426 if (usb_pipeisoc(urb->pipe)) { 1427 buf = (u16 *)(urb->transfer_buffer + 1428 urb->iso_frame_desc[td->iso_cnt].offset); 1429 size = min(bufsize, 1430 (int)urb->iso_frame_desc[td->iso_cnt].length); 1431 } else { 1432 buf = (u16 *)(urb->transfer_buffer + urb->actual_length); 1433 size = min_t(u32, bufsize, 1434 urb->transfer_buffer_length - urb->actual_length); 1435 } 1436 1437 /* write fifo */ 1438 if (pipenum > 0) 1439 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS); 1440 if (urb->transfer_buffer) { 1441 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size); 1442 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size) 1443 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr); 1444 } 1445 1446 /* update parameters */ 1447 urb->actual_length += size; 1448 if (usb_pipeisoc(urb->pipe)) { 1449 urb->iso_frame_desc[td->iso_cnt].actual_length = size; 1450 urb->iso_frame_desc[td->iso_cnt].status = 0; 1451 td->iso_cnt++; 1452 } 1453 1454 /* check transfer finish */ 1455 if (check_transfer_finish(td, urb)) { 1456 disable_irq_ready(r8a66597, pipenum); 1457 enable_irq_empty(r8a66597, pipenum); 1458 if (!usb_pipeisoc(urb->pipe)) 1459 enable_irq_nrdy(r8a66597, pipenum); 1460 } else 1461 pipe_irq_enable(r8a66597, urb, pipenum); 1462} 1463 1464 1465static void check_next_phase(struct r8a66597 *r8a66597, int status) 1466{ 1467 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0); 1468 struct urb *urb; 1469 u8 finish = 0; 1470 1471 if (unlikely(!td)) 1472 return; 1473 urb = td->urb; 1474 1475 switch (td->type) { 1476 case USB_PID_IN: 1477 case USB_PID_OUT: 1478 if (check_transfer_finish(td, urb)) 1479 td->type = USB_PID_ACK; 1480 break; 1481 case USB_PID_SETUP: 1482 if (urb->transfer_buffer_length == urb->actual_length) 1483 td->type = USB_PID_ACK; 1484 else if (usb_pipeout(urb->pipe)) 1485 td->type = USB_PID_OUT; 1486 else 1487 td->type = USB_PID_IN; 1488 break; 1489 case USB_PID_ACK: 1490 finish = 1; 1491 break; 1492 } 1493 1494 if (finish || status != 0 || urb->unlinked) 1495 finish_request(r8a66597, td, 0, urb, status); 1496 else 1497 start_transfer(r8a66597, td); 1498} 1499 1500static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum) 1501{ 1502 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); 1503 1504 if (td) { 1505 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID; 1506 1507 if (pid == PID_NAK) 1508 return -ECONNRESET; 1509 else 1510 return -EPIPE; 1511 } 1512 return 0; 1513} 1514 1515static void irq_pipe_ready(struct r8a66597 *r8a66597) 1516{ 1517 u16 check; 1518 u16 pipenum; 1519 u16 mask; 1520 struct r8a66597_td *td; 1521 1522 mask = r8a66597_read(r8a66597, BRDYSTS) 1523 & r8a66597_read(r8a66597, BRDYENB); 1524 r8a66597_write(r8a66597, ~mask, BRDYSTS); 1525 if (mask & BRDY0) { 1526 td = r8a66597_get_td(r8a66597, 0); 1527 if (td && td->type == USB_PID_IN) 1528 packet_read(r8a66597, 0); 1529 else 1530 pipe_irq_disable(r8a66597, 0); 1531 check_next_phase(r8a66597, 0); 1532 } 1533 1534 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1535 check = 1 << pipenum; 1536 if (mask & check) { 1537 td = r8a66597_get_td(r8a66597, pipenum); 1538 if (unlikely(!td)) 1539 continue; 1540 1541 if (td->type == USB_PID_IN) 1542 packet_read(r8a66597, pipenum); 1543 else if (td->type == USB_PID_OUT) 1544 packet_write(r8a66597, pipenum); 1545 } 1546 } 1547} 1548 1549static void irq_pipe_empty(struct r8a66597 *r8a66597) 1550{ 1551 u16 tmp; 1552 u16 check; 1553 u16 pipenum; 1554 u16 mask; 1555 struct r8a66597_td *td; 1556 1557 mask = r8a66597_read(r8a66597, BEMPSTS) 1558 & r8a66597_read(r8a66597, BEMPENB); 1559 r8a66597_write(r8a66597, ~mask, BEMPSTS); 1560 if (mask & BEMP0) { 1561 cfifo_change(r8a66597, 0); 1562 td = r8a66597_get_td(r8a66597, 0); 1563 if (td && td->type != USB_PID_OUT) 1564 disable_irq_empty(r8a66597, 0); 1565 check_next_phase(r8a66597, 0); 1566 } 1567 1568 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1569 check = 1 << pipenum; 1570 if (mask & check) { 1571 struct r8a66597_td *td; 1572 td = r8a66597_get_td(r8a66597, pipenum); 1573 if (unlikely(!td)) 1574 continue; 1575 1576 tmp = r8a66597_read(r8a66597, td->pipe->pipectr); 1577 if ((tmp & INBUFM) == 0) { 1578 disable_irq_empty(r8a66597, pipenum); 1579 pipe_irq_disable(r8a66597, pipenum); 1580 finish_request(r8a66597, td, pipenum, td->urb, 1581 0); 1582 } 1583 } 1584 } 1585} 1586 1587static void irq_pipe_nrdy(struct r8a66597 *r8a66597) 1588{ 1589 u16 check; 1590 u16 pipenum; 1591 u16 mask; 1592 int status; 1593 1594 mask = r8a66597_read(r8a66597, NRDYSTS) 1595 & r8a66597_read(r8a66597, NRDYENB); 1596 r8a66597_write(r8a66597, ~mask, NRDYSTS); 1597 if (mask & NRDY0) { 1598 cfifo_change(r8a66597, 0); 1599 status = get_urb_error(r8a66597, 0); 1600 pipe_irq_disable(r8a66597, 0); 1601 check_next_phase(r8a66597, status); 1602 } 1603 1604 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1605 check = 1 << pipenum; 1606 if (mask & check) { 1607 struct r8a66597_td *td; 1608 td = r8a66597_get_td(r8a66597, pipenum); 1609 if (unlikely(!td)) 1610 continue; 1611 1612 status = get_urb_error(r8a66597, pipenum); 1613 pipe_irq_disable(r8a66597, pipenum); 1614 pipe_stop(r8a66597, td->pipe); 1615 finish_request(r8a66597, td, pipenum, td->urb, status); 1616 } 1617 } 1618} 1619 1620static irqreturn_t r8a66597_irq(struct usb_hcd *hcd) 1621{ 1622 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1623 u16 intsts0, intsts1, intsts2; 1624 u16 intenb0, intenb1, intenb2; 1625 u16 mask0, mask1, mask2; 1626 int status; 1627 1628 spin_lock(&r8a66597->lock); 1629 1630 intsts0 = r8a66597_read(r8a66597, INTSTS0); 1631 intsts1 = r8a66597_read(r8a66597, INTSTS1); 1632 intsts2 = r8a66597_read(r8a66597, INTSTS2); 1633 intenb0 = r8a66597_read(r8a66597, INTENB0); 1634 intenb1 = r8a66597_read(r8a66597, INTENB1); 1635 intenb2 = r8a66597_read(r8a66597, INTENB2); 1636 1637 mask2 = intsts2 & intenb2; 1638 mask1 = intsts1 & intenb1; 1639 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY); 1640 if (mask2) { 1641 if (mask2 & ATTCH) { 1642 r8a66597_write(r8a66597, ~ATTCH, INTSTS2); 1643 r8a66597_bclr(r8a66597, ATTCHE, INTENB2); 1644 1645 /* start usb bus sampling */ 1646 start_root_hub_sampling(r8a66597, 1, 1); 1647 } 1648 if (mask2 & DTCH) { 1649 r8a66597_write(r8a66597, ~DTCH, INTSTS2); 1650 r8a66597_bclr(r8a66597, DTCHE, INTENB2); 1651 r8a66597_usb_disconnect(r8a66597, 1); 1652 } 1653 if (mask2 & BCHG) { 1654 r8a66597_write(r8a66597, ~BCHG, INTSTS2); 1655 r8a66597_bclr(r8a66597, BCHGE, INTENB2); 1656 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1657 } 1658 } 1659 1660 if (mask1) { 1661 if (mask1 & ATTCH) { 1662 r8a66597_write(r8a66597, ~ATTCH, INTSTS1); 1663 r8a66597_bclr(r8a66597, ATTCHE, INTENB1); 1664 1665 /* start usb bus sampling */ 1666 start_root_hub_sampling(r8a66597, 0, 1); 1667 } 1668 if (mask1 & DTCH) { 1669 r8a66597_write(r8a66597, ~DTCH, INTSTS1); 1670 r8a66597_bclr(r8a66597, DTCHE, INTENB1); 1671 r8a66597_usb_disconnect(r8a66597, 0); 1672 } 1673 if (mask1 & BCHG) { 1674 r8a66597_write(r8a66597, ~BCHG, INTSTS1); 1675 r8a66597_bclr(r8a66597, BCHGE, INTENB1); 1676 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); 1677 } 1678 1679 if (mask1 & SIGN) { 1680 r8a66597_write(r8a66597, ~SIGN, INTSTS1); 1681 status = get_urb_error(r8a66597, 0); 1682 check_next_phase(r8a66597, status); 1683 } 1684 if (mask1 & SACK) { 1685 r8a66597_write(r8a66597, ~SACK, INTSTS1); 1686 check_next_phase(r8a66597, 0); 1687 } 1688 } 1689 if (mask0) { 1690 if (mask0 & BRDY) 1691 irq_pipe_ready(r8a66597); 1692 if (mask0 & BEMP) 1693 irq_pipe_empty(r8a66597); 1694 if (mask0 & NRDY) 1695 irq_pipe_nrdy(r8a66597); 1696 } 1697 1698 spin_unlock(&r8a66597->lock); 1699 return IRQ_HANDLED; 1700} 1701 1702/* this function must be called with interrupt disabled */ 1703static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port) 1704{ 1705 u16 tmp; 1706 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 1707 1708 if (rh->port & USB_PORT_STAT_RESET) { 1709 unsigned long dvstctr_reg = get_dvstctr_reg(port); 1710 1711 tmp = r8a66597_read(r8a66597, dvstctr_reg); 1712 if ((tmp & USBRST) == USBRST) { 1713 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, 1714 dvstctr_reg); 1715 r8a66597_root_hub_start_polling(r8a66597); 1716 } else 1717 r8a66597_usb_connect(r8a66597, port); 1718 } 1719 1720 if (!(rh->port & USB_PORT_STAT_CONNECTION)) { 1721 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); 1722 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); 1723 } 1724 1725 if (rh->scount > 0) { 1726 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; 1727 if (tmp == rh->old_syssts) { 1728 rh->scount--; 1729 if (rh->scount == 0) 1730 r8a66597_check_syssts(r8a66597, port, tmp); 1731 else 1732 r8a66597_root_hub_start_polling(r8a66597); 1733 } else { 1734 rh->scount = R8A66597_MAX_SAMPLING; 1735 rh->old_syssts = tmp; 1736 r8a66597_root_hub_start_polling(r8a66597); 1737 } 1738 } 1739} 1740 1741static void r8a66597_interval_timer(unsigned long _r8a66597) 1742{ 1743 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1744 unsigned long flags; 1745 u16 pipenum; 1746 struct r8a66597_td *td; 1747 1748 spin_lock_irqsave(&r8a66597->lock, flags); 1749 1750 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1751 if (!(r8a66597->interval_map & (1 << pipenum))) 1752 continue; 1753 if (timer_pending(&r8a66597->interval_timer[pipenum])) 1754 continue; 1755 1756 td = r8a66597_get_td(r8a66597, pipenum); 1757 if (td) 1758 start_transfer(r8a66597, td); 1759 } 1760 1761 spin_unlock_irqrestore(&r8a66597->lock, flags); 1762} 1763 1764static void r8a66597_td_timer(unsigned long _r8a66597) 1765{ 1766 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1767 unsigned long flags; 1768 u16 pipenum; 1769 struct r8a66597_td *td, *new_td = NULL; 1770 struct r8a66597_pipe *pipe; 1771 1772 spin_lock_irqsave(&r8a66597->lock, flags); 1773 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { 1774 if (!(r8a66597->timeout_map & (1 << pipenum))) 1775 continue; 1776 if (timer_pending(&r8a66597->td_timer[pipenum])) 1777 continue; 1778 1779 td = r8a66597_get_td(r8a66597, pipenum); 1780 if (!td) { 1781 r8a66597->timeout_map &= ~(1 << pipenum); 1782 continue; 1783 } 1784 1785 if (td->urb->actual_length) { 1786 set_td_timer(r8a66597, td); 1787 break; 1788 } 1789 1790 pipe = td->pipe; 1791 pipe_stop(r8a66597, pipe); 1792 1793 new_td = td; 1794 do { 1795 list_move_tail(&new_td->queue, 1796 &r8a66597->pipe_queue[pipenum]); 1797 new_td = r8a66597_get_td(r8a66597, pipenum); 1798 if (!new_td) { 1799 new_td = td; 1800 break; 1801 } 1802 } while (td != new_td && td->address == new_td->address); 1803 1804 start_transfer(r8a66597, new_td); 1805 1806 if (td == new_td) 1807 r8a66597->timeout_map &= ~(1 << pipenum); 1808 else 1809 set_td_timer(r8a66597, new_td); 1810 break; 1811 } 1812 spin_unlock_irqrestore(&r8a66597->lock, flags); 1813} 1814 1815static void r8a66597_timer(unsigned long _r8a66597) 1816{ 1817 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; 1818 unsigned long flags; 1819 int port; 1820 1821 spin_lock_irqsave(&r8a66597->lock, flags); 1822 1823 for (port = 0; port < r8a66597->max_root_hub; port++) 1824 r8a66597_root_hub_control(r8a66597, port); 1825 1826 spin_unlock_irqrestore(&r8a66597->lock, flags); 1827} 1828 1829static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) 1830{ 1831 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); 1832 1833 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED && 1834 (urb->dev->state == USB_STATE_CONFIGURED)) 1835 return 1; 1836 else 1837 return 0; 1838} 1839 1840static int r8a66597_start(struct usb_hcd *hcd) 1841{ 1842 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1843 1844 hcd->state = HC_STATE_RUNNING; 1845 return enable_controller(r8a66597); 1846} 1847 1848static void r8a66597_stop(struct usb_hcd *hcd) 1849{ 1850 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1851 1852 disable_controller(r8a66597); 1853} 1854 1855static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb) 1856{ 1857 unsigned int usb_address = usb_pipedevice(urb->pipe); 1858 u16 root_port, hub_port; 1859 1860 if (usb_address == 0) { 1861 get_port_number(r8a66597, urb->dev->devpath, 1862 &root_port, &hub_port); 1863 set_devadd_reg(r8a66597, 0, 1864 get_r8a66597_usb_speed(urb->dev->speed), 1865 get_parent_r8a66597_address(r8a66597, urb->dev), 1866 hub_port, root_port); 1867 } 1868} 1869 1870static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597, 1871 struct urb *urb, 1872 struct usb_host_endpoint *hep) 1873{ 1874 struct r8a66597_td *td; 1875 u16 pipenum; 1876 1877 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC); 1878 if (td == NULL) 1879 return NULL; 1880 1881 pipenum = r8a66597_get_pipenum(urb, hep); 1882 td->pipenum = pipenum; 1883 td->pipe = hep->hcpriv; 1884 td->urb = urb; 1885 td->address = get_urb_to_r8a66597_addr(r8a66597, urb); 1886 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe, 1887 !usb_pipein(urb->pipe)); 1888 if (usb_pipecontrol(urb->pipe)) 1889 td->type = USB_PID_SETUP; 1890 else if (usb_pipein(urb->pipe)) 1891 td->type = USB_PID_IN; 1892 else 1893 td->type = USB_PID_OUT; 1894 INIT_LIST_HEAD(&td->queue); 1895 1896 return td; 1897} 1898 1899static int r8a66597_urb_enqueue(struct usb_hcd *hcd, 1900 struct urb *urb, 1901 gfp_t mem_flags) 1902{ 1903 struct usb_host_endpoint *hep = urb->ep; 1904 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1905 struct r8a66597_td *td = NULL; 1906 int ret, request = 0; 1907 unsigned long flags; 1908 1909 spin_lock_irqsave(&r8a66597->lock, flags); 1910 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) { 1911 ret = -ENODEV; 1912 goto error_not_linked; 1913 } 1914 1915 ret = usb_hcd_link_urb_to_ep(hcd, urb); 1916 if (ret) 1917 goto error_not_linked; 1918 1919 if (!hep->hcpriv) { 1920 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), 1921 GFP_ATOMIC); 1922 if (!hep->hcpriv) { 1923 ret = -ENOMEM; 1924 goto error; 1925 } 1926 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA); 1927 if (usb_pipeendpoint(urb->pipe)) 1928 init_pipe_info(r8a66597, urb, hep, &hep->desc); 1929 } 1930 1931 if (unlikely(check_pipe_config(r8a66597, urb))) 1932 init_pipe_config(r8a66597, urb); 1933 1934 set_address_zero(r8a66597, urb); 1935 td = r8a66597_make_td(r8a66597, urb, hep); 1936 if (td == NULL) { 1937 ret = -ENOMEM; 1938 goto error; 1939 } 1940 if (list_empty(&r8a66597->pipe_queue[td->pipenum])) 1941 request = 1; 1942 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]); 1943 urb->hcpriv = td; 1944 1945 if (request) { 1946 if (td->pipe->info.timer_interval) { 1947 r8a66597->interval_map |= 1 << td->pipenum; 1948 mod_timer(&r8a66597->interval_timer[td->pipenum], 1949 jiffies + msecs_to_jiffies( 1950 td->pipe->info.timer_interval)); 1951 } else { 1952 ret = start_transfer(r8a66597, td); 1953 if (ret < 0) { 1954 list_del(&td->queue); 1955 kfree(td); 1956 } 1957 } 1958 } else 1959 set_td_timer(r8a66597, td); 1960 1961error: 1962 if (ret) 1963 usb_hcd_unlink_urb_from_ep(hcd, urb); 1964error_not_linked: 1965 spin_unlock_irqrestore(&r8a66597->lock, flags); 1966 return ret; 1967} 1968 1969static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, 1970 int status) 1971{ 1972 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1973 struct r8a66597_td *td; 1974 unsigned long flags; 1975 int rc; 1976 1977 spin_lock_irqsave(&r8a66597->lock, flags); 1978 rc = usb_hcd_check_unlink_urb(hcd, urb, status); 1979 if (rc) 1980 goto done; 1981 1982 if (urb->hcpriv) { 1983 td = urb->hcpriv; 1984 pipe_stop(r8a66597, td->pipe); 1985 pipe_irq_disable(r8a66597, td->pipenum); 1986 disable_irq_empty(r8a66597, td->pipenum); 1987 finish_request(r8a66597, td, td->pipenum, urb, status); 1988 } 1989 done: 1990 spin_unlock_irqrestore(&r8a66597->lock, flags); 1991 return rc; 1992} 1993 1994static void r8a66597_endpoint_disable(struct usb_hcd *hcd, 1995 struct usb_host_endpoint *hep) 1996{ 1997 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 1998 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv; 1999 struct r8a66597_td *td; 2000 struct urb *urb = NULL; 2001 u16 pipenum; 2002 unsigned long flags; 2003 2004 if (pipe == NULL) 2005 return; 2006 pipenum = pipe->info.pipenum; 2007 2008 if (pipenum == 0) { 2009 kfree(hep->hcpriv); 2010 hep->hcpriv = NULL; 2011 return; 2012 } 2013 2014 spin_lock_irqsave(&r8a66597->lock, flags); 2015 pipe_stop(r8a66597, pipe); 2016 pipe_irq_disable(r8a66597, pipenum); 2017 disable_irq_empty(r8a66597, pipenum); 2018 td = r8a66597_get_td(r8a66597, pipenum); 2019 if (td) 2020 urb = td->urb; 2021 finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN); 2022 kfree(hep->hcpriv); 2023 hep->hcpriv = NULL; 2024 spin_unlock_irqrestore(&r8a66597->lock, flags); 2025} 2026 2027static int r8a66597_get_frame(struct usb_hcd *hcd) 2028{ 2029 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2030 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF; 2031} 2032 2033static void collect_usb_address_map(struct usb_device *udev, unsigned long *map) 2034{ 2035 int chix; 2036 2037 if (udev->state == USB_STATE_CONFIGURED && 2038 udev->parent && udev->parent->devnum > 1 && 2039 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB) 2040 map[udev->devnum/32] |= (1 << (udev->devnum % 32)); 2041 2042 for (chix = 0; chix < udev->maxchild; chix++) { 2043 struct usb_device *childdev = udev->children[chix]; 2044 2045 if (childdev) 2046 collect_usb_address_map(childdev, map); 2047 } 2048} 2049 2050/* this function must be called with interrupt disabled */ 2051static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597, 2052 int addr) 2053{ 2054 struct r8a66597_device *dev; 2055 struct list_head *list = &r8a66597->child_device; 2056 2057 list_for_each_entry(dev, list, device_list) { 2058 if (dev->usb_address != addr) 2059 continue; 2060 2061 return dev; 2062 } 2063 2064 printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr); 2065 return NULL; 2066} 2067 2068static void update_usb_address_map(struct r8a66597 *r8a66597, 2069 struct usb_device *root_hub, 2070 unsigned long *map) 2071{ 2072 int i, j, addr; 2073 unsigned long diff; 2074 unsigned long flags; 2075 2076 for (i = 0; i < 4; i++) { 2077 diff = r8a66597->child_connect_map[i] ^ map[i]; 2078 if (!diff) 2079 continue; 2080 2081 for (j = 0; j < 32; j++) { 2082 if (!(diff & (1 << j))) 2083 continue; 2084 2085 addr = i * 32 + j; 2086 if (map[i] & (1 << j)) 2087 set_child_connect_map(r8a66597, addr); 2088 else { 2089 struct r8a66597_device *dev; 2090 2091 spin_lock_irqsave(&r8a66597->lock, flags); 2092 dev = get_r8a66597_device(r8a66597, addr); 2093 disable_r8a66597_pipe_all(r8a66597, dev); 2094 free_usb_address(r8a66597, dev, 0); 2095 put_child_connect_map(r8a66597, addr); 2096 spin_unlock_irqrestore(&r8a66597->lock, flags); 2097 } 2098 } 2099 } 2100} 2101 2102static void r8a66597_check_detect_child(struct r8a66597 *r8a66597, 2103 struct usb_hcd *hcd) 2104{ 2105 struct usb_bus *bus; 2106 unsigned long now_map[4]; 2107 2108 memset(now_map, 0, sizeof(now_map)); 2109 2110 list_for_each_entry(bus, &usb_bus_list, bus_list) { 2111 if (!bus->root_hub) 2112 continue; 2113 2114 if (bus->busnum != hcd->self.busnum) 2115 continue; 2116 2117 collect_usb_address_map(bus->root_hub, now_map); 2118 update_usb_address_map(r8a66597, bus->root_hub, now_map); 2119 } 2120} 2121 2122static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf) 2123{ 2124 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2125 unsigned long flags; 2126 int i; 2127 2128 r8a66597_check_detect_child(r8a66597, hcd); 2129 2130 spin_lock_irqsave(&r8a66597->lock, flags); 2131 2132 *buf = 0; /* initialize (no change) */ 2133 2134 for (i = 0; i < r8a66597->max_root_hub; i++) { 2135 if (r8a66597->root_hub[i].port & 0xffff0000) 2136 *buf |= 1 << (i + 1); 2137 } 2138 2139 spin_unlock_irqrestore(&r8a66597->lock, flags); 2140 2141 return (*buf != 0); 2142} 2143 2144static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597, 2145 struct usb_hub_descriptor *desc) 2146{ 2147 desc->bDescriptorType = 0x29; 2148 desc->bHubContrCurrent = 0; 2149 desc->bNbrPorts = r8a66597->max_root_hub; 2150 desc->bDescLength = 9; 2151 desc->bPwrOn2PwrGood = 0; 2152 desc->wHubCharacteristics = cpu_to_le16(0x0011); 2153 desc->bitmap[0] = ((1 << r8a66597->max_root_hub) - 1) << 1; 2154 desc->bitmap[1] = ~0; 2155} 2156 2157static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, 2158 u16 wIndex, char *buf, u16 wLength) 2159{ 2160 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2161 int ret; 2162 int port = (wIndex & 0x00FF) - 1; 2163 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2164 unsigned long flags; 2165 2166 ret = 0; 2167 2168 spin_lock_irqsave(&r8a66597->lock, flags); 2169 switch (typeReq) { 2170 case ClearHubFeature: 2171 case SetHubFeature: 2172 switch (wValue) { 2173 case C_HUB_OVER_CURRENT: 2174 case C_HUB_LOCAL_POWER: 2175 break; 2176 default: 2177 goto error; 2178 } 2179 break; 2180 case ClearPortFeature: 2181 if (wIndex > r8a66597->max_root_hub) 2182 goto error; 2183 if (wLength != 0) 2184 goto error; 2185 2186 switch (wValue) { 2187 case USB_PORT_FEAT_ENABLE: 2188 rh->port &= ~USB_PORT_STAT_POWER; 2189 break; 2190 case USB_PORT_FEAT_SUSPEND: 2191 break; 2192 case USB_PORT_FEAT_POWER: 2193 r8a66597_port_power(r8a66597, port, 0); 2194 break; 2195 case USB_PORT_FEAT_C_ENABLE: 2196 case USB_PORT_FEAT_C_SUSPEND: 2197 case USB_PORT_FEAT_C_CONNECTION: 2198 case USB_PORT_FEAT_C_OVER_CURRENT: 2199 case USB_PORT_FEAT_C_RESET: 2200 break; 2201 default: 2202 goto error; 2203 } 2204 rh->port &= ~(1 << wValue); 2205 break; 2206 case GetHubDescriptor: 2207 r8a66597_hub_descriptor(r8a66597, 2208 (struct usb_hub_descriptor *)buf); 2209 break; 2210 case GetHubStatus: 2211 *buf = 0x00; 2212 break; 2213 case GetPortStatus: 2214 if (wIndex > r8a66597->max_root_hub) 2215 goto error; 2216 *(__le32 *)buf = cpu_to_le32(rh->port); 2217 break; 2218 case SetPortFeature: 2219 if (wIndex > r8a66597->max_root_hub) 2220 goto error; 2221 if (wLength != 0) 2222 goto error; 2223 2224 switch (wValue) { 2225 case USB_PORT_FEAT_SUSPEND: 2226 break; 2227 case USB_PORT_FEAT_POWER: 2228 r8a66597_port_power(r8a66597, port, 1); 2229 rh->port |= USB_PORT_STAT_POWER; 2230 break; 2231 case USB_PORT_FEAT_RESET: { 2232 struct r8a66597_device *dev = rh->dev; 2233 2234 rh->port |= USB_PORT_STAT_RESET; 2235 2236 disable_r8a66597_pipe_all(r8a66597, dev); 2237 free_usb_address(r8a66597, dev, 1); 2238 2239 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, 2240 get_dvstctr_reg(port)); 2241 mod_timer(&r8a66597->rh_timer, 2242 jiffies + msecs_to_jiffies(50)); 2243 } 2244 break; 2245 default: 2246 goto error; 2247 } 2248 rh->port |= 1 << wValue; 2249 break; 2250 default: 2251error: 2252 ret = -EPIPE; 2253 break; 2254 } 2255 2256 spin_unlock_irqrestore(&r8a66597->lock, flags); 2257 return ret; 2258} 2259 2260#if defined(CONFIG_PM) 2261static int r8a66597_bus_suspend(struct usb_hcd *hcd) 2262{ 2263 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2264 int port; 2265 2266 dbg("%s", __func__); 2267 2268 for (port = 0; port < r8a66597->max_root_hub; port++) { 2269 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2270 unsigned long dvstctr_reg = get_dvstctr_reg(port); 2271 2272 if (!(rh->port & USB_PORT_STAT_ENABLE)) 2273 continue; 2274 2275 dbg("suspend port = %d", port); 2276 r8a66597_bclr(r8a66597, UACT, dvstctr_reg); /* suspend */ 2277 rh->port |= USB_PORT_STAT_SUSPEND; 2278 2279 if (rh->dev->udev->do_remote_wakeup) { 2280 msleep(3); /* waiting last SOF */ 2281 r8a66597_bset(r8a66597, RWUPE, dvstctr_reg); 2282 r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port)); 2283 r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port)); 2284 } 2285 } 2286 2287 r8a66597->bus_suspended = 1; 2288 2289 return 0; 2290} 2291 2292static int r8a66597_bus_resume(struct usb_hcd *hcd) 2293{ 2294 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); 2295 int port; 2296 2297 dbg("%s", __func__); 2298 2299 for (port = 0; port < r8a66597->max_root_hub; port++) { 2300 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2301 unsigned long dvstctr_reg = get_dvstctr_reg(port); 2302 2303 if (!(rh->port & USB_PORT_STAT_SUSPEND)) 2304 continue; 2305 2306 dbg("resume port = %d", port); 2307 rh->port &= ~USB_PORT_STAT_SUSPEND; 2308 rh->port |= USB_PORT_STAT_C_SUSPEND < 16; 2309 r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg); 2310 msleep(50); 2311 r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg); 2312 } 2313 2314 return 0; 2315 2316} 2317#else 2318#define r8a66597_bus_suspend NULL 2319#define r8a66597_bus_resume NULL 2320#endif 2321 2322static struct hc_driver r8a66597_hc_driver = { 2323 .description = hcd_name, 2324 .hcd_priv_size = sizeof(struct r8a66597), 2325 .irq = r8a66597_irq, 2326 2327 /* 2328 * generic hardware linkage 2329 */ 2330 .flags = HCD_USB2, 2331 2332 .start = r8a66597_start, 2333 .stop = r8a66597_stop, 2334 2335 /* 2336 * managing i/o requests and associated device resources 2337 */ 2338 .urb_enqueue = r8a66597_urb_enqueue, 2339 .urb_dequeue = r8a66597_urb_dequeue, 2340 .endpoint_disable = r8a66597_endpoint_disable, 2341 2342 /* 2343 * periodic schedule support 2344 */ 2345 .get_frame_number = r8a66597_get_frame, 2346 2347 /* 2348 * root hub support 2349 */ 2350 .hub_status_data = r8a66597_hub_status_data, 2351 .hub_control = r8a66597_hub_control, 2352 .bus_suspend = r8a66597_bus_suspend, 2353 .bus_resume = r8a66597_bus_resume, 2354}; 2355 2356#if defined(CONFIG_PM) 2357static int r8a66597_suspend(struct device *dev) 2358{ 2359 struct r8a66597 *r8a66597 = dev_get_drvdata(dev); 2360 int port; 2361 2362 dbg("%s", __func__); 2363 2364 disable_controller(r8a66597); 2365 2366 for (port = 0; port < r8a66597->max_root_hub; port++) { 2367 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; 2368 2369 rh->port = 0x00000000; 2370 } 2371 2372 return 0; 2373} 2374 2375static int r8a66597_resume(struct device *dev) 2376{ 2377 struct r8a66597 *r8a66597 = dev_get_drvdata(dev); 2378 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2379 2380 dbg("%s", __func__); 2381 2382 enable_controller(r8a66597); 2383 usb_root_hub_lost_power(hcd->self.root_hub); 2384 2385 return 0; 2386} 2387 2388static const struct dev_pm_ops r8a66597_dev_pm_ops = { 2389 .suspend = r8a66597_suspend, 2390 .resume = r8a66597_resume, 2391 .poweroff = r8a66597_suspend, 2392 .restore = r8a66597_resume, 2393}; 2394 2395#define R8A66597_DEV_PM_OPS (&r8a66597_dev_pm_ops) 2396#else /* if defined(CONFIG_PM) */ 2397#define R8A66597_DEV_PM_OPS NULL 2398#endif 2399 2400static int __init_or_module r8a66597_remove(struct platform_device *pdev) 2401{ 2402 struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev); 2403 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); 2404 2405 del_timer_sync(&r8a66597->rh_timer); 2406 usb_remove_hcd(hcd); 2407 iounmap(r8a66597->reg); 2408#ifdef CONFIG_HAVE_CLK 2409 if (r8a66597->pdata->on_chip) 2410 clk_put(r8a66597->clk); 2411#endif 2412 usb_put_hcd(hcd); 2413 return 0; 2414} 2415 2416static int __devinit r8a66597_probe(struct platform_device *pdev) 2417{ 2418#ifdef CONFIG_HAVE_CLK 2419 char clk_name[8]; 2420#endif 2421 struct resource *res = NULL, *ires; 2422 int irq = -1; 2423 void __iomem *reg = NULL; 2424 struct usb_hcd *hcd = NULL; 2425 struct r8a66597 *r8a66597; 2426 int ret = 0; 2427 int i; 2428 unsigned long irq_trigger; 2429 2430 if (pdev->dev.dma_mask) { 2431 ret = -EINVAL; 2432 dev_err(&pdev->dev, "dma not supported\n"); 2433 goto clean_up; 2434 } 2435 2436 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 2437 if (!res) { 2438 ret = -ENODEV; 2439 dev_err(&pdev->dev, "platform_get_resource error.\n"); 2440 goto clean_up; 2441 } 2442 2443 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 2444 if (!ires) { 2445 ret = -ENODEV; 2446 dev_err(&pdev->dev, 2447 "platform_get_resource IORESOURCE_IRQ error.\n"); 2448 goto clean_up; 2449 } 2450 2451 irq = ires->start; 2452 irq_trigger = ires->flags & IRQF_TRIGGER_MASK; 2453 2454 reg = ioremap(res->start, resource_size(res)); 2455 if (reg == NULL) { 2456 ret = -ENOMEM; 2457 dev_err(&pdev->dev, "ioremap error.\n"); 2458 goto clean_up; 2459 } 2460 2461 if (pdev->dev.platform_data == NULL) { 2462 dev_err(&pdev->dev, "no platform data\n"); 2463 ret = -ENODEV; 2464 goto clean_up; 2465 } 2466 2467 /* initialize hcd */ 2468 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name); 2469 if (!hcd) { 2470 ret = -ENOMEM; 2471 dev_err(&pdev->dev, "Failed to create hcd\n"); 2472 goto clean_up; 2473 } 2474 r8a66597 = hcd_to_r8a66597(hcd); 2475 memset(r8a66597, 0, sizeof(struct r8a66597)); 2476 dev_set_drvdata(&pdev->dev, r8a66597); 2477 r8a66597->pdata = pdev->dev.platform_data; 2478 r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; 2479 2480 if (r8a66597->pdata->on_chip) { 2481#ifdef CONFIG_HAVE_CLK 2482 snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id); 2483 r8a66597->clk = clk_get(&pdev->dev, clk_name); 2484 if (IS_ERR(r8a66597->clk)) { 2485 dev_err(&pdev->dev, "cannot get clock \"%s\"\n", 2486 clk_name); 2487 ret = PTR_ERR(r8a66597->clk); 2488 goto clean_up2; 2489 } 2490#endif 2491 r8a66597->max_root_hub = 1; 2492 } else 2493 r8a66597->max_root_hub = 2; 2494 2495 spin_lock_init(&r8a66597->lock); 2496 init_timer(&r8a66597->rh_timer); 2497 r8a66597->rh_timer.function = r8a66597_timer; 2498 r8a66597->rh_timer.data = (unsigned long)r8a66597; 2499 r8a66597->reg = reg; 2500 2501 /* make sure no interrupts are pending */ 2502 ret = r8a66597_clock_enable(r8a66597); 2503 if (ret < 0) 2504 goto clean_up3; 2505 disable_controller(r8a66597); 2506 2507 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { 2508 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]); 2509 init_timer(&r8a66597->td_timer[i]); 2510 r8a66597->td_timer[i].function = r8a66597_td_timer; 2511 r8a66597->td_timer[i].data = (unsigned long)r8a66597; 2512 setup_timer(&r8a66597->interval_timer[i], 2513 r8a66597_interval_timer, 2514 (unsigned long)r8a66597); 2515 } 2516 INIT_LIST_HEAD(&r8a66597->child_device); 2517 2518 hcd->rsrc_start = res->start; 2519 2520 ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger); 2521 if (ret != 0) { 2522 dev_err(&pdev->dev, "Failed to add hcd\n"); 2523 goto clean_up3; 2524 } 2525 2526 return 0; 2527 2528clean_up3: 2529#ifdef CONFIG_HAVE_CLK 2530 if (r8a66597->pdata->on_chip) 2531 clk_put(r8a66597->clk); 2532clean_up2: 2533#endif 2534 usb_put_hcd(hcd); 2535 2536clean_up: 2537 if (reg) 2538 iounmap(reg); 2539 2540 return ret; 2541} 2542 2543static struct platform_driver r8a66597_driver = { 2544 .probe = r8a66597_probe, 2545 .remove = r8a66597_remove, 2546 .driver = { 2547 .name = (char *) hcd_name, 2548 .owner = THIS_MODULE, 2549 .pm = R8A66597_DEV_PM_OPS, 2550 }, 2551}; 2552 2553static int __init r8a66597_init(void) 2554{ 2555 if (usb_disabled()) 2556 return -ENODEV; 2557 2558 printk(KERN_INFO KBUILD_MODNAME ": driver %s, %s\n", hcd_name, 2559 DRIVER_VERSION); 2560 return platform_driver_register(&r8a66597_driver); 2561} 2562module_init(r8a66597_init); 2563 2564static void __exit r8a66597_cleanup(void) 2565{ 2566 platform_driver_unregister(&r8a66597_driver); 2567} 2568module_exit(r8a66597_cleanup); 2569