1 /* Driver for Realtek RTS51xx USB card reader 2 * 3 * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved. 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License as published by the 7 * Free Software Foundation; either version 2, or (at your option) any 8 * later version. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License along 16 * with this program; if not, see <http://www.gnu.org/licenses/>. 17 * 18 * Author: 19 * wwang (wei_wang@realsil.com.cn) 20 * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China 21 */ 22 23 #include <linux/module.h> 24 #include <linux/blkdev.h> 25 #include <linux/kthread.h> 26 #include <linux/sched.h> 27 #include <linux/kernel.h> 28 29 #include <scsi/scsi.h> 30 #include <scsi/scsi_cmnd.h> 31 #include <scsi/scsi_device.h> 32 #include <linux/cdrom.h> 33 34 #include <linux/usb.h> 35 #include <linux/slab.h> 36 #include <linux/usb_usual.h> 37 38 #include "usb.h" 39 #include "transport.h" 40 #include "protocol.h" 41 #include "debug.h" 42 43 MODULE_DESCRIPTION("Driver for Realtek USB Card Reader"); 44 MODULE_AUTHOR("wwang <wei_wang@realsil.com.cn>"); 45 MODULE_LICENSE("GPL"); 46 MODULE_VERSION("1.03"); 47 48 static int auto_delink_en = 1; 49 module_param(auto_delink_en, int, S_IRUGO | S_IWUSR); 50 MODULE_PARM_DESC(auto_delink_en, "enable auto delink"); 51 52 #ifdef CONFIG_REALTEK_AUTOPM 53 static int ss_en = 1; 54 module_param(ss_en, int, S_IRUGO | S_IWUSR); 55 MODULE_PARM_DESC(ss_en, "enable selective suspend"); 56 57 static int ss_delay = 50; 58 module_param(ss_delay, int, S_IRUGO | S_IWUSR); 59 MODULE_PARM_DESC(ss_delay, 60 "seconds to delay before entering selective suspend"); 61 62 enum RTS51X_STAT { 63 RTS51X_STAT_INIT, 64 RTS51X_STAT_IDLE, 65 RTS51X_STAT_RUN, 66 RTS51X_STAT_SS 67 }; 68 69 #define POLLING_INTERVAL 50 70 71 #define rts51x_set_stat(chip, stat) \ 72 ((chip)->state = (enum RTS51X_STAT)(stat)) 73 #define rts51x_get_stat(chip) ((chip)->state) 74 75 #define SET_LUN_READY(chip, lun) ((chip)->lun_ready |= ((u8)1 << (lun))) 76 #define CLR_LUN_READY(chip, lun) ((chip)->lun_ready &= ~((u8)1 << (lun))) 77 #define TST_LUN_READY(chip, lun) ((chip)->lun_ready & ((u8)1 << (lun))) 78 79 #endif 80 81 struct rts51x_status { 82 u16 vid; 83 u16 pid; 84 u8 cur_lun; 85 u8 card_type; 86 u8 total_lun; 87 u16 fw_ver; 88 u8 phy_exist; 89 u8 multi_flag; 90 u8 multi_card; 91 u8 log_exist; 92 union { 93 u8 detailed_type1; 94 u8 detailed_type2; 95 } detailed_type; 96 u8 function[2]; 97 }; 98 99 struct rts51x_chip { 100 u16 vendor_id; 101 u16 product_id; 102 char max_lun; 103 104 struct rts51x_status *status; 105 int status_len; 106 107 u32 flag; 108 struct us_data *us; 109 110 #ifdef CONFIG_REALTEK_AUTOPM 111 struct timer_list rts51x_suspend_timer; 112 unsigned long timer_expires; 113 int pwr_state; 114 u8 lun_ready; 115 enum RTS51X_STAT state; 116 int support_auto_delink; 117 #endif 118 /* used to back up the protocol chosen in probe1 phase */ 119 proto_cmnd proto_handler_backup; 120 }; 121 122 /* flag definition */ 123 #define FLIDX_AUTO_DELINK 0x01 124 125 #define SCSI_LUN(srb) ((srb)->device->lun) 126 127 /* Bit Operation */ 128 #define SET_BIT(data, idx) ((data) |= 1 << (idx)) 129 #define CLR_BIT(data, idx) ((data) &= ~(1 << (idx))) 130 #define CHK_BIT(data, idx) ((data) & (1 << (idx))) 131 132 #define SET_AUTO_DELINK(chip) ((chip)->flag |= FLIDX_AUTO_DELINK) 133 #define CLR_AUTO_DELINK(chip) ((chip)->flag &= ~FLIDX_AUTO_DELINK) 134 #define CHK_AUTO_DELINK(chip) ((chip)->flag & FLIDX_AUTO_DELINK) 135 136 #define RTS51X_GET_VID(chip) ((chip)->vendor_id) 137 #define RTS51X_GET_PID(chip) ((chip)->product_id) 138 139 #define VENDOR_ID(chip) ((chip)->status[0].vid) 140 #define PRODUCT_ID(chip) ((chip)->status[0].pid) 141 #define FW_VERSION(chip) ((chip)->status[0].fw_ver) 142 #define STATUS_LEN(chip) ((chip)->status_len) 143 144 #define STATUS_SUCCESS 0 145 #define STATUS_FAIL 1 146 147 /* Check card reader function */ 148 #define SUPPORT_DETAILED_TYPE1(chip) \ 149 CHK_BIT((chip)->status[0].function[0], 1) 150 #define SUPPORT_OT(chip) \ 151 CHK_BIT((chip)->status[0].function[0], 2) 152 #define SUPPORT_OC(chip) \ 153 CHK_BIT((chip)->status[0].function[0], 3) 154 #define SUPPORT_AUTO_DELINK(chip) \ 155 CHK_BIT((chip)->status[0].function[0], 4) 156 #define SUPPORT_SDIO(chip) \ 157 CHK_BIT((chip)->status[0].function[1], 0) 158 #define SUPPORT_DETAILED_TYPE2(chip) \ 159 CHK_BIT((chip)->status[0].function[1], 1) 160 161 #define CHECK_PID(chip, pid) (RTS51X_GET_PID(chip) == (pid)) 162 #define CHECK_FW_VER(chip, fw_ver) (FW_VERSION(chip) == (fw_ver)) 163 #define CHECK_ID(chip, pid, fw_ver) \ 164 (CHECK_PID((chip), (pid)) && CHECK_FW_VER((chip), (fw_ver))) 165 166 static int init_realtek_cr(struct us_data *us); 167 168 /* 169 * The table of devices 170 */ 171 #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ 172 vendorName, productName, useProtocol, useTransport, \ 173 initFunction, flags) \ 174 {\ 175 USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ 176 .driver_info = (flags) \ 177 } 178 179 static const struct usb_device_id realtek_cr_ids[] = { 180 # include "unusual_realtek.h" 181 {} /* Terminating entry */ 182 }; 183 184 MODULE_DEVICE_TABLE(usb, realtek_cr_ids); 185 186 #undef UNUSUAL_DEV 187 188 /* 189 * The flags table 190 */ 191 #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ 192 vendor_name, product_name, use_protocol, use_transport, \ 193 init_function, Flags) \ 194 { \ 195 .vendorName = vendor_name, \ 196 .productName = product_name, \ 197 .useProtocol = use_protocol, \ 198 .useTransport = use_transport, \ 199 .initFunction = init_function, \ 200 } 201 202 static struct us_unusual_dev realtek_cr_unusual_dev_list[] = { 203 # include "unusual_realtek.h" 204 {} /* Terminating entry */ 205 }; 206 207 #undef UNUSUAL_DEV 208 209 static int rts51x_bulk_transport(struct us_data *us, u8 lun, 210 u8 *cmd, int cmd_len, u8 *buf, int buf_len, 211 enum dma_data_direction dir, int *act_len) 212 { 213 struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *)us->iobuf; 214 struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *)us->iobuf; 215 int result; 216 unsigned int residue; 217 unsigned int cswlen; 218 unsigned int cbwlen = US_BULK_CB_WRAP_LEN; 219 220 /* set up the command wrapper */ 221 bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN); 222 bcb->DataTransferLength = cpu_to_le32(buf_len); 223 bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0; 224 bcb->Tag = ++us->tag; 225 bcb->Lun = lun; 226 bcb->Length = cmd_len; 227 228 /* copy the command payload */ 229 memset(bcb->CDB, 0, sizeof(bcb->CDB)); 230 memcpy(bcb->CDB, cmd, bcb->Length); 231 232 /* send it to out endpoint */ 233 result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, 234 bcb, cbwlen, NULL); 235 if (result != USB_STOR_XFER_GOOD) 236 return USB_STOR_TRANSPORT_ERROR; 237 238 /* DATA STAGE */ 239 /* send/receive data payload, if there is any */ 240 241 if (buf && buf_len) { 242 unsigned int pipe = (dir == DMA_FROM_DEVICE) ? 243 us->recv_bulk_pipe : us->send_bulk_pipe; 244 result = usb_stor_bulk_transfer_buf(us, pipe, 245 buf, buf_len, NULL); 246 if (result == USB_STOR_XFER_ERROR) 247 return USB_STOR_TRANSPORT_ERROR; 248 } 249 250 /* get CSW for device status */ 251 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, 252 bcs, US_BULK_CS_WRAP_LEN, &cswlen); 253 if (result != USB_STOR_XFER_GOOD) 254 return USB_STOR_TRANSPORT_ERROR; 255 256 /* check bulk status */ 257 if (bcs->Signature != cpu_to_le32(US_BULK_CS_SIGN)) { 258 usb_stor_dbg(us, "Signature mismatch: got %08X, expecting %08X\n", 259 le32_to_cpu(bcs->Signature), US_BULK_CS_SIGN); 260 return USB_STOR_TRANSPORT_ERROR; 261 } 262 263 residue = bcs->Residue; 264 if (bcs->Tag != us->tag) 265 return USB_STOR_TRANSPORT_ERROR; 266 267 /* try to compute the actual residue, based on how much data 268 * was really transferred and what the device tells us */ 269 if (residue) 270 residue = residue < buf_len ? residue : buf_len; 271 272 if (act_len) 273 *act_len = buf_len - residue; 274 275 /* based on the status code, we report good or bad */ 276 switch (bcs->Status) { 277 case US_BULK_STAT_OK: 278 /* command good -- note that data could be short */ 279 return USB_STOR_TRANSPORT_GOOD; 280 281 case US_BULK_STAT_FAIL: 282 /* command failed */ 283 return USB_STOR_TRANSPORT_FAILED; 284 285 case US_BULK_STAT_PHASE: 286 /* phase error -- note that a transport reset will be 287 * invoked by the invoke_transport() function 288 */ 289 return USB_STOR_TRANSPORT_ERROR; 290 } 291 292 /* we should never get here, but if we do, we're in trouble */ 293 return USB_STOR_TRANSPORT_ERROR; 294 } 295 296 static int rts51x_bulk_transport_special(struct us_data *us, u8 lun, 297 u8 *cmd, int cmd_len, u8 *buf, int buf_len, 298 enum dma_data_direction dir, int *act_len) 299 { 300 struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf; 301 struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *) us->iobuf; 302 int result; 303 unsigned int cswlen; 304 unsigned int cbwlen = US_BULK_CB_WRAP_LEN; 305 306 /* set up the command wrapper */ 307 bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN); 308 bcb->DataTransferLength = cpu_to_le32(buf_len); 309 bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0; 310 bcb->Tag = ++us->tag; 311 bcb->Lun = lun; 312 bcb->Length = cmd_len; 313 314 /* copy the command payload */ 315 memset(bcb->CDB, 0, sizeof(bcb->CDB)); 316 memcpy(bcb->CDB, cmd, bcb->Length); 317 318 /* send it to out endpoint */ 319 result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, 320 bcb, cbwlen, NULL); 321 if (result != USB_STOR_XFER_GOOD) 322 return USB_STOR_TRANSPORT_ERROR; 323 324 /* DATA STAGE */ 325 /* send/receive data payload, if there is any */ 326 327 if (buf && buf_len) { 328 unsigned int pipe = (dir == DMA_FROM_DEVICE) ? 329 us->recv_bulk_pipe : us->send_bulk_pipe; 330 result = usb_stor_bulk_transfer_buf(us, pipe, 331 buf, buf_len, NULL); 332 if (result == USB_STOR_XFER_ERROR) 333 return USB_STOR_TRANSPORT_ERROR; 334 } 335 336 /* get CSW for device status */ 337 result = usb_bulk_msg(us->pusb_dev, us->recv_bulk_pipe, bcs, 338 US_BULK_CS_WRAP_LEN, &cswlen, 250); 339 return result; 340 } 341 342 /* Determine what the maximum LUN supported is */ 343 static int rts51x_get_max_lun(struct us_data *us) 344 { 345 int result; 346 347 /* issue the command */ 348 us->iobuf[0] = 0; 349 result = usb_stor_control_msg(us, us->recv_ctrl_pipe, 350 US_BULK_GET_MAX_LUN, 351 USB_DIR_IN | USB_TYPE_CLASS | 352 USB_RECIP_INTERFACE, 353 0, us->ifnum, us->iobuf, 1, 10 * HZ); 354 355 usb_stor_dbg(us, "GetMaxLUN command result is %d, data is %d\n", 356 result, us->iobuf[0]); 357 358 /* if we have a successful request, return the result */ 359 if (result > 0) 360 return us->iobuf[0]; 361 362 return 0; 363 } 364 365 static int rts51x_read_mem(struct us_data *us, u16 addr, u8 *data, u16 len) 366 { 367 int retval; 368 u8 cmnd[12] = { 0 }; 369 u8 *buf; 370 371 buf = kmalloc(len, GFP_NOIO); 372 if (buf == NULL) 373 return USB_STOR_TRANSPORT_ERROR; 374 375 usb_stor_dbg(us, "addr = 0x%x, len = %d\n", addr, len); 376 377 cmnd[0] = 0xF0; 378 cmnd[1] = 0x0D; 379 cmnd[2] = (u8) (addr >> 8); 380 cmnd[3] = (u8) addr; 381 cmnd[4] = (u8) (len >> 8); 382 cmnd[5] = (u8) len; 383 384 retval = rts51x_bulk_transport(us, 0, cmnd, 12, 385 buf, len, DMA_FROM_DEVICE, NULL); 386 if (retval != USB_STOR_TRANSPORT_GOOD) { 387 kfree(buf); 388 return -EIO; 389 } 390 391 memcpy(data, buf, len); 392 kfree(buf); 393 return 0; 394 } 395 396 static int rts51x_write_mem(struct us_data *us, u16 addr, u8 *data, u16 len) 397 { 398 int retval; 399 u8 cmnd[12] = { 0 }; 400 u8 *buf; 401 402 buf = kmemdup(data, len, GFP_NOIO); 403 if (buf == NULL) 404 return USB_STOR_TRANSPORT_ERROR; 405 406 usb_stor_dbg(us, "addr = 0x%x, len = %d\n", addr, len); 407 408 cmnd[0] = 0xF0; 409 cmnd[1] = 0x0E; 410 cmnd[2] = (u8) (addr >> 8); 411 cmnd[3] = (u8) addr; 412 cmnd[4] = (u8) (len >> 8); 413 cmnd[5] = (u8) len; 414 415 retval = rts51x_bulk_transport(us, 0, cmnd, 12, 416 buf, len, DMA_TO_DEVICE, NULL); 417 kfree(buf); 418 if (retval != USB_STOR_TRANSPORT_GOOD) 419 return -EIO; 420 421 return 0; 422 } 423 424 static int rts51x_read_status(struct us_data *us, 425 u8 lun, u8 *status, int len, int *actlen) 426 { 427 int retval; 428 u8 cmnd[12] = { 0 }; 429 u8 *buf; 430 431 buf = kmalloc(len, GFP_NOIO); 432 if (buf == NULL) 433 return USB_STOR_TRANSPORT_ERROR; 434 435 usb_stor_dbg(us, "lun = %d\n", lun); 436 437 cmnd[0] = 0xF0; 438 cmnd[1] = 0x09; 439 440 retval = rts51x_bulk_transport(us, lun, cmnd, 12, 441 buf, len, DMA_FROM_DEVICE, actlen); 442 if (retval != USB_STOR_TRANSPORT_GOOD) { 443 kfree(buf); 444 return -EIO; 445 } 446 447 memcpy(status, buf, len); 448 kfree(buf); 449 return 0; 450 } 451 452 static int rts51x_check_status(struct us_data *us, u8 lun) 453 { 454 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra); 455 int retval; 456 u8 buf[16]; 457 458 retval = rts51x_read_status(us, lun, buf, 16, &(chip->status_len)); 459 if (retval != STATUS_SUCCESS) 460 return -EIO; 461 462 usb_stor_dbg(us, "chip->status_len = %d\n", chip->status_len); 463 464 chip->status[lun].vid = ((u16) buf[0] << 8) | buf[1]; 465 chip->status[lun].pid = ((u16) buf[2] << 8) | buf[3]; 466 chip->status[lun].cur_lun = buf[4]; 467 chip->status[lun].card_type = buf[5]; 468 chip->status[lun].total_lun = buf[6]; 469 chip->status[lun].fw_ver = ((u16) buf[7] << 8) | buf[8]; 470 chip->status[lun].phy_exist = buf[9]; 471 chip->status[lun].multi_flag = buf[10]; 472 chip->status[lun].multi_card = buf[11]; 473 chip->status[lun].log_exist = buf[12]; 474 if (chip->status_len == 16) { 475 chip->status[lun].detailed_type.detailed_type1 = buf[13]; 476 chip->status[lun].function[0] = buf[14]; 477 chip->status[lun].function[1] = buf[15]; 478 } 479 480 return 0; 481 } 482 483 static int enable_oscillator(struct us_data *us) 484 { 485 int retval; 486 u8 value; 487 488 retval = rts51x_read_mem(us, 0xFE77, &value, 1); 489 if (retval < 0) 490 return -EIO; 491 492 value |= 0x04; 493 retval = rts51x_write_mem(us, 0xFE77, &value, 1); 494 if (retval < 0) 495 return -EIO; 496 497 retval = rts51x_read_mem(us, 0xFE77, &value, 1); 498 if (retval < 0) 499 return -EIO; 500 501 if (!(value & 0x04)) 502 return -EIO; 503 504 return 0; 505 } 506 507 static int __do_config_autodelink(struct us_data *us, u8 *data, u16 len) 508 { 509 int retval; 510 u8 cmnd[12] = {0}; 511 u8 *buf; 512 513 usb_stor_dbg(us, "addr = 0xfe47, len = %d\n", len); 514 515 buf = kmemdup(data, len, GFP_NOIO); 516 if (!buf) 517 return USB_STOR_TRANSPORT_ERROR; 518 519 cmnd[0] = 0xF0; 520 cmnd[1] = 0x0E; 521 cmnd[2] = 0xfe; 522 cmnd[3] = 0x47; 523 cmnd[4] = (u8)(len >> 8); 524 cmnd[5] = (u8)len; 525 526 retval = rts51x_bulk_transport_special(us, 0, cmnd, 12, buf, len, DMA_TO_DEVICE, NULL); 527 kfree(buf); 528 if (retval != USB_STOR_TRANSPORT_GOOD) { 529 return -EIO; 530 } 531 532 return 0; 533 } 534 535 static int do_config_autodelink(struct us_data *us, int enable, int force) 536 { 537 int retval; 538 u8 value; 539 540 retval = rts51x_read_mem(us, 0xFE47, &value, 1); 541 if (retval < 0) 542 return -EIO; 543 544 if (enable) { 545 if (force) 546 value |= 0x03; 547 else 548 value |= 0x01; 549 } else { 550 value &= ~0x03; 551 } 552 553 usb_stor_dbg(us, "set 0xfe47 to 0x%x\n", value); 554 555 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */ 556 retval = __do_config_autodelink(us, &value, 1); 557 if (retval < 0) 558 return -EIO; 559 560 return 0; 561 } 562 563 static int config_autodelink_after_power_on(struct us_data *us) 564 { 565 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra); 566 int retval; 567 u8 value; 568 569 if (!CHK_AUTO_DELINK(chip)) 570 return 0; 571 572 retval = rts51x_read_mem(us, 0xFE47, &value, 1); 573 if (retval < 0) 574 return -EIO; 575 576 if (auto_delink_en) { 577 CLR_BIT(value, 0); 578 CLR_BIT(value, 1); 579 SET_BIT(value, 2); 580 581 if (CHECK_ID(chip, 0x0138, 0x3882)) 582 CLR_BIT(value, 2); 583 584 SET_BIT(value, 7); 585 586 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */ 587 retval = __do_config_autodelink(us, &value, 1); 588 if (retval < 0) 589 return -EIO; 590 591 retval = enable_oscillator(us); 592 if (retval == 0) 593 (void)do_config_autodelink(us, 1, 0); 594 } else { 595 /* Autodelink controlled by firmware */ 596 597 SET_BIT(value, 2); 598 599 if (CHECK_ID(chip, 0x0138, 0x3882)) 600 CLR_BIT(value, 2); 601 602 if (CHECK_ID(chip, 0x0159, 0x5889) || 603 CHECK_ID(chip, 0x0138, 0x3880)) { 604 CLR_BIT(value, 0); 605 CLR_BIT(value, 7); 606 } 607 608 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */ 609 retval = __do_config_autodelink(us, &value, 1); 610 if (retval < 0) 611 return -EIO; 612 613 if (CHECK_ID(chip, 0x0159, 0x5888)) { 614 value = 0xFF; 615 retval = rts51x_write_mem(us, 0xFE79, &value, 1); 616 if (retval < 0) 617 return -EIO; 618 619 value = 0x01; 620 retval = rts51x_write_mem(us, 0x48, &value, 1); 621 if (retval < 0) 622 return -EIO; 623 } 624 } 625 626 return 0; 627 } 628 629 #ifdef CONFIG_PM 630 static int config_autodelink_before_power_down(struct us_data *us) 631 { 632 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra); 633 int retval; 634 u8 value; 635 636 if (!CHK_AUTO_DELINK(chip)) 637 return 0; 638 639 if (auto_delink_en) { 640 retval = rts51x_read_mem(us, 0xFE77, &value, 1); 641 if (retval < 0) 642 return -EIO; 643 644 SET_BIT(value, 2); 645 retval = rts51x_write_mem(us, 0xFE77, &value, 1); 646 if (retval < 0) 647 return -EIO; 648 649 if (CHECK_ID(chip, 0x0159, 0x5888)) { 650 value = 0x01; 651 retval = rts51x_write_mem(us, 0x48, &value, 1); 652 if (retval < 0) 653 return -EIO; 654 } 655 656 retval = rts51x_read_mem(us, 0xFE47, &value, 1); 657 if (retval < 0) 658 return -EIO; 659 660 SET_BIT(value, 0); 661 if (CHECK_ID(chip, 0x0138, 0x3882)) 662 SET_BIT(value, 2); 663 retval = rts51x_write_mem(us, 0xFE77, &value, 1); 664 if (retval < 0) 665 return -EIO; 666 } else { 667 if (CHECK_ID(chip, 0x0159, 0x5889) || 668 CHECK_ID(chip, 0x0138, 0x3880) || 669 CHECK_ID(chip, 0x0138, 0x3882)) { 670 retval = rts51x_read_mem(us, 0xFE47, &value, 1); 671 if (retval < 0) 672 return -EIO; 673 674 if (CHECK_ID(chip, 0x0159, 0x5889) || 675 CHECK_ID(chip, 0x0138, 0x3880)) { 676 SET_BIT(value, 0); 677 SET_BIT(value, 7); 678 } 679 680 if (CHECK_ID(chip, 0x0138, 0x3882)) 681 SET_BIT(value, 2); 682 683 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */ 684 retval = __do_config_autodelink(us, &value, 1); 685 if (retval < 0) 686 return -EIO; 687 } 688 689 if (CHECK_ID(chip, 0x0159, 0x5888)) { 690 value = 0x01; 691 retval = rts51x_write_mem(us, 0x48, &value, 1); 692 if (retval < 0) 693 return -EIO; 694 } 695 } 696 697 return 0; 698 } 699 700 static void fw5895_init(struct us_data *us) 701 { 702 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra); 703 int retval; 704 u8 val; 705 706 if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) { 707 usb_stor_dbg(us, "Not the specified device, return immediately!\n"); 708 } else { 709 retval = rts51x_read_mem(us, 0xFD6F, &val, 1); 710 if (retval == STATUS_SUCCESS && (val & 0x1F) == 0) { 711 val = 0x1F; 712 retval = rts51x_write_mem(us, 0xFD70, &val, 1); 713 if (retval != STATUS_SUCCESS) 714 usb_stor_dbg(us, "Write memory fail\n"); 715 } else { 716 usb_stor_dbg(us, "Read memory fail, OR (val & 0x1F) != 0\n"); 717 } 718 } 719 } 720 #endif 721 722 #ifdef CONFIG_REALTEK_AUTOPM 723 static void fw5895_set_mmc_wp(struct us_data *us) 724 { 725 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra); 726 int retval; 727 u8 buf[13]; 728 729 if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) { 730 usb_stor_dbg(us, "Not the specified device, return immediately!\n"); 731 } else { 732 retval = rts51x_read_mem(us, 0xFD6F, buf, 1); 733 if (retval == STATUS_SUCCESS && (buf[0] & 0x24) == 0x24) { 734 /* SD Exist and SD WP */ 735 retval = rts51x_read_mem(us, 0xD04E, buf, 1); 736 if (retval == STATUS_SUCCESS) { 737 buf[0] |= 0x04; 738 retval = rts51x_write_mem(us, 0xFD70, buf, 1); 739 if (retval != STATUS_SUCCESS) 740 usb_stor_dbg(us, "Write memory fail\n"); 741 } else { 742 usb_stor_dbg(us, "Read memory fail\n"); 743 } 744 } else { 745 usb_stor_dbg(us, "Read memory fail, OR (buf[0]&0x24)!=0x24\n"); 746 } 747 } 748 } 749 750 static void rts51x_modi_suspend_timer(struct rts51x_chip *chip) 751 { 752 struct us_data *us = chip->us; 753 754 usb_stor_dbg(us, "state:%d\n", rts51x_get_stat(chip)); 755 756 chip->timer_expires = jiffies + msecs_to_jiffies(1000*ss_delay); 757 mod_timer(&chip->rts51x_suspend_timer, chip->timer_expires); 758 } 759 760 static void rts51x_suspend_timer_fn(unsigned long data) 761 { 762 struct rts51x_chip *chip = (struct rts51x_chip *)data; 763 struct us_data *us = chip->us; 764 765 switch (rts51x_get_stat(chip)) { 766 case RTS51X_STAT_INIT: 767 case RTS51X_STAT_RUN: 768 rts51x_modi_suspend_timer(chip); 769 break; 770 case RTS51X_STAT_IDLE: 771 case RTS51X_STAT_SS: 772 usb_stor_dbg(us, "RTS51X_STAT_SS, intf->pm_usage_cnt:%d, power.usage:%d\n", 773 atomic_read(&us->pusb_intf->pm_usage_cnt), 774 atomic_read(&us->pusb_intf->dev.power.usage_count)); 775 776 if (atomic_read(&us->pusb_intf->pm_usage_cnt) > 0) { 777 usb_stor_dbg(us, "Ready to enter SS state\n"); 778 rts51x_set_stat(chip, RTS51X_STAT_SS); 779 /* ignore mass storage interface's children */ 780 pm_suspend_ignore_children(&us->pusb_intf->dev, true); 781 usb_autopm_put_interface_async(us->pusb_intf); 782 usb_stor_dbg(us, "RTS51X_STAT_SS 01, intf->pm_usage_cnt:%d, power.usage:%d\n", 783 atomic_read(&us->pusb_intf->pm_usage_cnt), 784 atomic_read(&us->pusb_intf->dev.power.usage_count)); 785 } 786 break; 787 default: 788 usb_stor_dbg(us, "Unknown state !!!\n"); 789 break; 790 } 791 } 792 793 static inline int working_scsi(struct scsi_cmnd *srb) 794 { 795 if ((srb->cmnd[0] == TEST_UNIT_READY) || 796 (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL)) { 797 return 0; 798 } 799 800 return 1; 801 } 802 803 static void rts51x_invoke_transport(struct scsi_cmnd *srb, struct us_data *us) 804 { 805 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra); 806 static int card_first_show = 1; 807 static u8 media_not_present[] = { 0x70, 0, 0x02, 0, 0, 0, 0, 808 10, 0, 0, 0, 0, 0x3A, 0, 0, 0, 0, 0 809 }; 810 static u8 invalid_cmd_field[] = { 0x70, 0, 0x05, 0, 0, 0, 0, 811 10, 0, 0, 0, 0, 0x24, 0, 0, 0, 0, 0 812 }; 813 int ret; 814 815 if (working_scsi(srb)) { 816 usb_stor_dbg(us, "working scsi, intf->pm_usage_cnt:%d, power.usage:%d\n", 817 atomic_read(&us->pusb_intf->pm_usage_cnt), 818 atomic_read(&us->pusb_intf->dev.power.usage_count)); 819 820 if (atomic_read(&us->pusb_intf->pm_usage_cnt) <= 0) { 821 ret = usb_autopm_get_interface(us->pusb_intf); 822 usb_stor_dbg(us, "working scsi, ret=%d\n", ret); 823 } 824 if (rts51x_get_stat(chip) != RTS51X_STAT_RUN) 825 rts51x_set_stat(chip, RTS51X_STAT_RUN); 826 chip->proto_handler_backup(srb, us); 827 } else { 828 if (rts51x_get_stat(chip) == RTS51X_STAT_SS) { 829 usb_stor_dbg(us, "NOT working scsi\n"); 830 if ((srb->cmnd[0] == TEST_UNIT_READY) && 831 (chip->pwr_state == US_SUSPEND)) { 832 if (TST_LUN_READY(chip, srb->device->lun)) { 833 srb->result = SAM_STAT_GOOD; 834 } else { 835 srb->result = SAM_STAT_CHECK_CONDITION; 836 memcpy(srb->sense_buffer, 837 media_not_present, 838 US_SENSE_SIZE); 839 } 840 usb_stor_dbg(us, "TEST_UNIT_READY\n"); 841 goto out; 842 } 843 if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) { 844 int prevent = srb->cmnd[4] & 0x1; 845 if (prevent) { 846 srb->result = SAM_STAT_CHECK_CONDITION; 847 memcpy(srb->sense_buffer, 848 invalid_cmd_field, 849 US_SENSE_SIZE); 850 } else { 851 srb->result = SAM_STAT_GOOD; 852 } 853 usb_stor_dbg(us, "ALLOW_MEDIUM_REMOVAL\n"); 854 goto out; 855 } 856 } else { 857 usb_stor_dbg(us, "NOT working scsi, not SS\n"); 858 chip->proto_handler_backup(srb, us); 859 /* Check whether card is plugged in */ 860 if (srb->cmnd[0] == TEST_UNIT_READY) { 861 if (srb->result == SAM_STAT_GOOD) { 862 SET_LUN_READY(chip, srb->device->lun); 863 if (card_first_show) { 864 card_first_show = 0; 865 fw5895_set_mmc_wp(us); 866 } 867 } else { 868 CLR_LUN_READY(chip, srb->device->lun); 869 card_first_show = 1; 870 } 871 } 872 if (rts51x_get_stat(chip) != RTS51X_STAT_IDLE) 873 rts51x_set_stat(chip, RTS51X_STAT_IDLE); 874 } 875 } 876 out: 877 usb_stor_dbg(us, "state:%d\n", rts51x_get_stat(chip)); 878 if (rts51x_get_stat(chip) == RTS51X_STAT_RUN) 879 rts51x_modi_suspend_timer(chip); 880 } 881 882 static int realtek_cr_autosuspend_setup(struct us_data *us) 883 { 884 struct rts51x_chip *chip; 885 struct rts51x_status *status = NULL; 886 u8 buf[16]; 887 int retval; 888 889 chip = (struct rts51x_chip *)us->extra; 890 chip->support_auto_delink = 0; 891 chip->pwr_state = US_RESUME; 892 chip->lun_ready = 0; 893 rts51x_set_stat(chip, RTS51X_STAT_INIT); 894 895 retval = rts51x_read_status(us, 0, buf, 16, &(chip->status_len)); 896 if (retval != STATUS_SUCCESS) { 897 usb_stor_dbg(us, "Read status fail\n"); 898 return -EIO; 899 } 900 status = chip->status; 901 status->vid = ((u16) buf[0] << 8) | buf[1]; 902 status->pid = ((u16) buf[2] << 8) | buf[3]; 903 status->cur_lun = buf[4]; 904 status->card_type = buf[5]; 905 status->total_lun = buf[6]; 906 status->fw_ver = ((u16) buf[7] << 8) | buf[8]; 907 status->phy_exist = buf[9]; 908 status->multi_flag = buf[10]; 909 status->multi_card = buf[11]; 910 status->log_exist = buf[12]; 911 if (chip->status_len == 16) { 912 status->detailed_type.detailed_type1 = buf[13]; 913 status->function[0] = buf[14]; 914 status->function[1] = buf[15]; 915 } 916 917 /* back up the proto_handler in us->extra */ 918 chip = (struct rts51x_chip *)(us->extra); 919 chip->proto_handler_backup = us->proto_handler; 920 /* Set the autosuspend_delay to 0 */ 921 pm_runtime_set_autosuspend_delay(&us->pusb_dev->dev, 0); 922 /* override us->proto_handler setted in get_protocol() */ 923 us->proto_handler = rts51x_invoke_transport; 924 925 chip->timer_expires = 0; 926 setup_timer(&chip->rts51x_suspend_timer, rts51x_suspend_timer_fn, 927 (unsigned long)chip); 928 fw5895_init(us); 929 930 /* enable autosuspend function of the usb device */ 931 usb_enable_autosuspend(us->pusb_dev); 932 933 return 0; 934 } 935 #endif 936 937 static void realtek_cr_destructor(void *extra) 938 { 939 struct rts51x_chip *chip = extra; 940 941 if (!chip) 942 return; 943 944 #ifdef CONFIG_REALTEK_AUTOPM 945 if (ss_en) { 946 del_timer(&chip->rts51x_suspend_timer); 947 chip->timer_expires = 0; 948 } 949 #endif 950 kfree(chip->status); 951 } 952 953 #ifdef CONFIG_PM 954 static int realtek_cr_suspend(struct usb_interface *iface, pm_message_t message) 955 { 956 struct us_data *us = usb_get_intfdata(iface); 957 958 /* wait until no command is running */ 959 mutex_lock(&us->dev_mutex); 960 961 config_autodelink_before_power_down(us); 962 963 mutex_unlock(&us->dev_mutex); 964 965 return 0; 966 } 967 968 static int realtek_cr_resume(struct usb_interface *iface) 969 { 970 struct us_data *us = usb_get_intfdata(iface); 971 972 fw5895_init(us); 973 config_autodelink_after_power_on(us); 974 975 return 0; 976 } 977 #else 978 #define realtek_cr_suspend NULL 979 #define realtek_cr_resume NULL 980 #endif 981 982 static int init_realtek_cr(struct us_data *us) 983 { 984 struct rts51x_chip *chip; 985 int size, i, retval; 986 987 chip = kzalloc(sizeof(struct rts51x_chip), GFP_KERNEL); 988 if (!chip) 989 return -ENOMEM; 990 991 us->extra = chip; 992 us->extra_destructor = realtek_cr_destructor; 993 us->max_lun = chip->max_lun = rts51x_get_max_lun(us); 994 chip->us = us; 995 996 usb_stor_dbg(us, "chip->max_lun = %d\n", chip->max_lun); 997 998 size = (chip->max_lun + 1) * sizeof(struct rts51x_status); 999 chip->status = kzalloc(size, GFP_KERNEL); 1000 if (!chip->status) 1001 goto INIT_FAIL; 1002 1003 for (i = 0; i <= (int)(chip->max_lun); i++) { 1004 retval = rts51x_check_status(us, (u8) i); 1005 if (retval < 0) 1006 goto INIT_FAIL; 1007 } 1008 1009 if (CHECK_FW_VER(chip, 0x5888) || CHECK_FW_VER(chip, 0x5889) || 1010 CHECK_FW_VER(chip, 0x5901)) 1011 SET_AUTO_DELINK(chip); 1012 if (STATUS_LEN(chip) == 16) { 1013 if (SUPPORT_AUTO_DELINK(chip)) 1014 SET_AUTO_DELINK(chip); 1015 } 1016 #ifdef CONFIG_REALTEK_AUTOPM 1017 if (ss_en) 1018 realtek_cr_autosuspend_setup(us); 1019 #endif 1020 1021 usb_stor_dbg(us, "chip->flag = 0x%x\n", chip->flag); 1022 1023 (void)config_autodelink_after_power_on(us); 1024 1025 return 0; 1026 1027 INIT_FAIL: 1028 if (us->extra) { 1029 kfree(chip->status); 1030 kfree(us->extra); 1031 us->extra = NULL; 1032 } 1033 1034 return -EIO; 1035 } 1036 1037 static int realtek_cr_probe(struct usb_interface *intf, 1038 const struct usb_device_id *id) 1039 { 1040 struct us_data *us; 1041 int result; 1042 1043 dev_dbg(&intf->dev, "Probe Realtek Card Reader!\n"); 1044 1045 result = usb_stor_probe1(&us, intf, id, 1046 (id - realtek_cr_ids) + 1047 realtek_cr_unusual_dev_list); 1048 if (result) 1049 return result; 1050 1051 result = usb_stor_probe2(us); 1052 1053 return result; 1054 } 1055 1056 static struct usb_driver realtek_cr_driver = { 1057 .name = "ums-realtek", 1058 .probe = realtek_cr_probe, 1059 .disconnect = usb_stor_disconnect, 1060 /* .suspend = usb_stor_suspend, */ 1061 /* .resume = usb_stor_resume, */ 1062 .reset_resume = usb_stor_reset_resume, 1063 .suspend = realtek_cr_suspend, 1064 .resume = realtek_cr_resume, 1065 .pre_reset = usb_stor_pre_reset, 1066 .post_reset = usb_stor_post_reset, 1067 .id_table = realtek_cr_ids, 1068 .soft_unbind = 1, 1069 .supports_autosuspend = 1, 1070 .no_dynamic_id = 1, 1071 }; 1072 1073 module_usb_driver(realtek_cr_driver); 1074