drivers/staging/rts5208/rtsx_card.c

   1 /* Driver for Realtek PCI-Express card reader
   2  *
   3  * Copyright(c) 2009-2013 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  *   Wei WANG (wei_wang@realsil.com.cn)
  20  *   Micky Ching (micky_ching@realsil.com.cn)
  21  */
  22
  23 #include <linux/blkdev.h>
  24 #include <linux/kthread.h>
  25 #include <linux/sched.h>
  26 #include <linux/workqueue.h>
  27 #include <linux/kernel.h>
  28
  29 #include "rtsx.h"
  30 #include "sd.h"
  31 #include "xd.h"
  32 #include "ms.h"
  33
  34 void do_remaining_work(struct rtsx_chip *chip)
  35 {
  36         struct sd_info *sd_card = &chip->sd_card;
  37 #ifdef XD_DELAY_WRITE
  38         struct xd_info *xd_card = &chip->xd_card;
  39 #endif
  40         struct ms_info *ms_card = &chip->ms_card;
  41
  42         if (chip->card_ready & SD_CARD) {
  43                 if (sd_card->seq_mode) {
  44                         rtsx_set_stat(chip, RTSX_STAT_RUN);
  45                         sd_card->cleanup_counter++;
  46                 } else {
  47                         sd_card->cleanup_counter = 0;
  48                 }
  49         }
  50
  51 #ifdef XD_DELAY_WRITE
  52         if (chip->card_ready & XD_CARD) {
  53                 if (xd_card->delay_write.delay_write_flag) {
  54                         rtsx_set_stat(chip, RTSX_STAT_RUN);
  55                         xd_card->cleanup_counter++;
  56                 } else {
  57                         xd_card->cleanup_counter = 0;
  58                 }
  59         }
  60 #endif
  61
  62         if (chip->card_ready & MS_CARD) {
  63                 if (CHK_MSPRO(ms_card)) {
  64                         if (ms_card->seq_mode) {
  65                                 rtsx_set_stat(chip, RTSX_STAT_RUN);
  66                                 ms_card->cleanup_counter++;
  67                         } else {
  68                                 ms_card->cleanup_counter = 0;
  69                         }
  70                 } else {
  71 #ifdef MS_DELAY_WRITE
  72                         if (ms_card->delay_write.delay_write_flag) {
  73                                 rtsx_set_stat(chip, RTSX_STAT_RUN);
  74                                 ms_card->cleanup_counter++;
  75                         } else {
  76                                 ms_card->cleanup_counter = 0;
  77                         }
  78 #endif
  79                 }
  80         }
  81
  82         if (sd_card->cleanup_counter > POLLING_WAIT_CNT)
  83                 sd_cleanup_work(chip);
  84
  85         if (xd_card->cleanup_counter > POLLING_WAIT_CNT)
  86                 xd_cleanup_work(chip);
  87
  88         if (ms_card->cleanup_counter > POLLING_WAIT_CNT)
  89                 ms_cleanup_work(chip);
  90 }
  91
  92 void try_to_switch_sdio_ctrl(struct rtsx_chip *chip)
  93 {
  94         u8 reg1 = 0, reg2 = 0;
  95
  96         rtsx_read_register(chip, 0xFF34, &reg1);
  97         rtsx_read_register(chip, 0xFF38, &reg2);
  98         dev_dbg(rtsx_dev(chip), "reg 0xFF34: 0x%x, reg 0xFF38: 0x%x\n",
  99                 reg1, reg2);
 100         if ((reg1 & 0xC0) && (reg2 & 0xC0)) {
 101                 chip->sd_int = 1;
 102                 rtsx_write_register(chip, SDIO_CTRL, 0xFF,
 103                                     SDIO_BUS_CTRL | SDIO_CD_CTRL);
 104                 rtsx_write_register(chip, PWR_GATE_CTRL,
 105                                     LDO3318_PWR_MASK, LDO_ON);
 106         }
 107 }
 108
 109 #ifdef SUPPORT_SDIO_ASPM
 110 void dynamic_configure_sdio_aspm(struct rtsx_chip *chip)
 111 {
 112         u8 buf[12], reg;
 113         int i;
 114
 115         for (i = 0; i < 12; i++)
 116                 rtsx_read_register(chip, 0xFF08 + i, &buf[i]);
 117         rtsx_read_register(chip, 0xFF25, &reg);
 118         if ((memcmp(buf, chip->sdio_raw_data, 12) != 0) || (reg & 0x03)) {
 119                 chip->sdio_counter = 0;
 120                 chip->sdio_idle = 0;
 121         } else {
 122                 if (!chip->sdio_idle) {
 123                         chip->sdio_counter++;
 124                         if (chip->sdio_counter >= SDIO_IDLE_COUNT) {
 125                                 chip->sdio_counter = 0;
 126                                 chip->sdio_idle = 1;
 127                         }
 128                 }
 129         }
 130         memcpy(chip->sdio_raw_data, buf, 12);
 131
 132         if (chip->sdio_idle) {
 133                 if (!chip->sdio_aspm) {
 134                         dev_dbg(rtsx_dev(chip), "SDIO enter ASPM!\n");
 135                         rtsx_write_register(chip, ASPM_FORCE_CTL, 0xFC,
 136                                             0x30 | (chip->aspm_level[1] << 2));
 137                         chip->sdio_aspm = 1;
 138                 }
 139         } else {
 140                 if (chip->sdio_aspm) {
 141                         dev_dbg(rtsx_dev(chip), "SDIO exit ASPM!\n");
 142                         rtsx_write_register(chip, ASPM_FORCE_CTL, 0xFC, 0x30);
 143                         chip->sdio_aspm = 0;
 144                 }
 145         }
 146 }
 147 #endif
 148
 149 void do_reset_sd_card(struct rtsx_chip *chip)
 150 {
 151         int retval;
 152
 153         dev_dbg(rtsx_dev(chip), "%s: %d, card2lun = 0x%x\n", __func__,
 154                 chip->sd_reset_counter, chip->card2lun[SD_CARD]);
 155
 156         if (chip->card2lun[SD_CARD] >= MAX_ALLOWED_LUN_CNT) {
 157                 clear_bit(SD_NR, &chip->need_reset);
 158                 chip->sd_reset_counter = 0;
 159                 chip->sd_show_cnt = 0;
 160                 return;
 161         }
 162
 163         chip->rw_fail_cnt[chip->card2lun[SD_CARD]] = 0;
 164
 165         rtsx_set_stat(chip, RTSX_STAT_RUN);
 166         rtsx_write_register(chip, SDIO_CTRL, 0xFF, 0);
 167
 168         retval = reset_sd_card(chip);
 169         if (chip->need_release & SD_CARD)
 170                 return;
 171         if (retval == STATUS_SUCCESS) {
 172                 clear_bit(SD_NR, &chip->need_reset);
 173                 chip->sd_reset_counter = 0;
 174                 chip->sd_show_cnt = 0;
 175                 chip->card_ready |= SD_CARD;
 176                 chip->card_fail &= ~SD_CARD;
 177                 chip->rw_card[chip->card2lun[SD_CARD]] = sd_rw;
 178         } else {
 179                 if (chip->sd_io || (chip->sd_reset_counter >= MAX_RESET_CNT)) {
 180                         clear_bit(SD_NR, &chip->need_reset);
 181                         chip->sd_reset_counter = 0;
 182                         chip->sd_show_cnt = 0;
 183                 } else {
 184                         chip->sd_reset_counter++;
 185                 }
 186                 chip->card_ready &= ~SD_CARD;
 187                 chip->card_fail |= SD_CARD;
 188                 chip->capacity[chip->card2lun[SD_CARD]] = 0;
 189                 chip->rw_card[chip->card2lun[SD_CARD]] = NULL;
 190
 191                 rtsx_write_register(chip, CARD_OE, SD_OUTPUT_EN, 0);
 192                 if (!chip->ft2_fast_mode)
 193                         card_power_off(chip, SD_CARD);
 194                 if (chip->sd_io) {
 195                         chip->sd_int = 0;
 196                         try_to_switch_sdio_ctrl(chip);
 197                 } else {
 198                         disable_card_clock(chip, SD_CARD);
 199                 }
 200         }
 201 }
 202
 203 void do_reset_xd_card(struct rtsx_chip *chip)
 204 {
 205         int retval;
 206
 207         dev_dbg(rtsx_dev(chip), "%s: %d, card2lun = 0x%x\n", __func__,
 208                 chip->xd_reset_counter, chip->card2lun[XD_CARD]);
 209
 210         if (chip->card2lun[XD_CARD] >= MAX_ALLOWED_LUN_CNT) {
 211                 clear_bit(XD_NR, &chip->need_reset);
 212                 chip->xd_reset_counter = 0;
 213                 chip->xd_show_cnt = 0;
 214                 return;
 215         }
 216
 217         chip->rw_fail_cnt[chip->card2lun[XD_CARD]] = 0;
 218
 219         rtsx_set_stat(chip, RTSX_STAT_RUN);
 220         rtsx_write_register(chip, SDIO_CTRL, 0xFF, 0);
 221
 222         retval = reset_xd_card(chip);
 223         if (chip->need_release & XD_CARD)
 224                 return;
 225         if (retval == STATUS_SUCCESS) {
 226                 clear_bit(XD_NR, &chip->need_reset);
 227                 chip->xd_reset_counter = 0;
 228                 chip->card_ready |= XD_CARD;
 229                 chip->card_fail &= ~XD_CARD;
 230                 chip->rw_card[chip->card2lun[XD_CARD]] = xd_rw;
 231         } else {
 232                 if (chip->xd_reset_counter >= MAX_RESET_CNT) {
 233                         clear_bit(XD_NR, &chip->need_reset);
 234                         chip->xd_reset_counter = 0;
 235                         chip->xd_show_cnt = 0;
 236                 } else {
 237                         chip->xd_reset_counter++;
 238                 }
 239                 chip->card_ready &= ~XD_CARD;
 240                 chip->card_fail |= XD_CARD;
 241                 chip->capacity[chip->card2lun[XD_CARD]] = 0;
 242                 chip->rw_card[chip->card2lun[XD_CARD]] = NULL;
 243
 244                 rtsx_write_register(chip, CARD_OE, XD_OUTPUT_EN, 0);
 245                 if (!chip->ft2_fast_mode)
 246                         card_power_off(chip, XD_CARD);
 247                 disable_card_clock(chip, XD_CARD);
 248         }
 249 }
 250
 251 void do_reset_ms_card(struct rtsx_chip *chip)
 252 {
 253         int retval;
 254
 255         dev_dbg(rtsx_dev(chip), "%s: %d, card2lun = 0x%x\n", __func__,
 256                 chip->ms_reset_counter, chip->card2lun[MS_CARD]);
 257
 258         if (chip->card2lun[MS_CARD] >= MAX_ALLOWED_LUN_CNT) {
 259                 clear_bit(MS_NR, &chip->need_reset);
 260                 chip->ms_reset_counter = 0;
 261                 chip->ms_show_cnt = 0;
 262                 return;
 263         }
 264
 265         chip->rw_fail_cnt[chip->card2lun[MS_CARD]] = 0;
 266
 267         rtsx_set_stat(chip, RTSX_STAT_RUN);
 268         rtsx_write_register(chip, SDIO_CTRL, 0xFF, 0);
 269
 270         retval = reset_ms_card(chip);
 271         if (chip->need_release & MS_CARD)
 272                 return;
 273         if (retval == STATUS_SUCCESS) {
 274                 clear_bit(MS_NR, &chip->need_reset);
 275                 chip->ms_reset_counter = 0;
 276                 chip->card_ready |= MS_CARD;
 277                 chip->card_fail &= ~MS_CARD;
 278                 chip->rw_card[chip->card2lun[MS_CARD]] = ms_rw;
 279         } else {
 280                 if (chip->ms_reset_counter >= MAX_RESET_CNT) {
 281                         clear_bit(MS_NR, &chip->need_reset);
 282                         chip->ms_reset_counter = 0;
 283                         chip->ms_show_cnt = 0;
 284                 } else {
 285                         chip->ms_reset_counter++;
 286                 }
 287                 chip->card_ready &= ~MS_CARD;
 288                 chip->card_fail |= MS_CARD;
 289                 chip->capacity[chip->card2lun[MS_CARD]] = 0;
 290                 chip->rw_card[chip->card2lun[MS_CARD]] = NULL;
 291
 292                 rtsx_write_register(chip, CARD_OE, MS_OUTPUT_EN, 0);
 293                 if (!chip->ft2_fast_mode)
 294                         card_power_off(chip, MS_CARD);
 295                 disable_card_clock(chip, MS_CARD);
 296         }
 297 }
 298
 299 static void release_sdio(struct rtsx_chip *chip)
 300 {
 301         if (chip->sd_io) {
 302                 rtsx_write_register(chip, CARD_STOP, SD_STOP | SD_CLR_ERR,
 303                                     SD_STOP | SD_CLR_ERR);
 304
 305                 if (chip->chip_insert_with_sdio) {
 306                         chip->chip_insert_with_sdio = 0;
 307
 308                         if (CHECK_PID(chip, 0x5288))
 309                                 rtsx_write_register(chip, 0xFE5A, 0x08, 0x00);
 310                         else
 311                                 rtsx_write_register(chip, 0xFE70, 0x80, 0x00);
 312                 }
 313
 314                 rtsx_write_register(chip, SDIO_CTRL, SDIO_CD_CTRL, 0);
 315                 chip->sd_io = 0;
 316         }
 317 }
 318
 319 void rtsx_power_off_card(struct rtsx_chip *chip)
 320 {
 321         if ((chip->card_ready & SD_CARD) || chip->sd_io) {
 322                 sd_cleanup_work(chip);
 323                 sd_power_off_card3v3(chip);
 324         }
 325
 326         if (chip->card_ready & XD_CARD) {
 327                 xd_cleanup_work(chip);
 328                 xd_power_off_card3v3(chip);
 329         }
 330
 331         if (chip->card_ready & MS_CARD) {
 332                 ms_cleanup_work(chip);
 333                 ms_power_off_card3v3(chip);
 334         }
 335 }
 336
 337 void rtsx_release_cards(struct rtsx_chip *chip)
 338 {
 339         chip->int_reg = rtsx_readl(chip, RTSX_BIPR);
 340
 341         if ((chip->card_ready & SD_CARD) || chip->sd_io) {
 342                 if (chip->int_reg & SD_EXIST)
 343                         sd_cleanup_work(chip);
 344                 release_sd_card(chip);
 345         }
 346
 347         if (chip->card_ready & XD_CARD) {
 348                 if (chip->int_reg & XD_EXIST)
 349                         xd_cleanup_work(chip);
 350                 release_xd_card(chip);
 351         }
 352
 353         if (chip->card_ready & MS_CARD) {
 354                 if (chip->int_reg & MS_EXIST)
 355                         ms_cleanup_work(chip);
 356                 release_ms_card(chip);
 357         }
 358 }
 359
 360 void rtsx_reset_cards(struct rtsx_chip *chip)
 361 {
 362         if (!chip->need_reset)
 363                 return;
 364
 365         rtsx_set_stat(chip, RTSX_STAT_RUN);
 366
 367         rtsx_force_power_on(chip, SSC_PDCTL | OC_PDCTL);
 368
 369         rtsx_disable_aspm(chip);
 370
 371         if ((chip->need_reset & SD_CARD) && chip->chip_insert_with_sdio)
 372                 clear_bit(SD_NR, &chip->need_reset);
 373
 374         if (chip->need_reset & XD_CARD) {
 375                 chip->card_exist |= XD_CARD;
 376
 377                 if (chip->xd_show_cnt >= MAX_SHOW_CNT)
 378                         do_reset_xd_card(chip);
 379                 else
 380                         chip->xd_show_cnt++;
 381         }
 382         if (CHECK_PID(chip, 0x5288) && CHECK_BARO_PKG(chip, QFN)) {
 383                 if (chip->card_exist & XD_CARD) {
 384                         clear_bit(SD_NR, &chip->need_reset);
 385                         clear_bit(MS_NR, &chip->need_reset);
 386                 }
 387         }
 388         if (chip->need_reset & SD_CARD) {
 389                 chip->card_exist |= SD_CARD;
 390
 391                 if (chip->sd_show_cnt >= MAX_SHOW_CNT) {
 392                         rtsx_write_register(chip, RBCTL, RB_FLUSH, RB_FLUSH);
 393                         do_reset_sd_card(chip);
 394                 } else {
 395                         chip->sd_show_cnt++;
 396                 }
 397         }
 398         if (chip->need_reset & MS_CARD) {
 399                 chip->card_exist |= MS_CARD;
 400
 401                 if (chip->ms_show_cnt >= MAX_SHOW_CNT)
 402                         do_reset_ms_card(chip);
 403                 else
 404                         chip->ms_show_cnt++;
 405         }
 406 }
 407
 408 void rtsx_reinit_cards(struct rtsx_chip *chip, int reset_chip)
 409 {
 410         rtsx_set_stat(chip, RTSX_STAT_RUN);
 411
 412         rtsx_force_power_on(chip, SSC_PDCTL | OC_PDCTL);
 413
 414         if (reset_chip)
 415                 rtsx_reset_chip(chip);
 416
 417         chip->int_reg = rtsx_readl(chip, RTSX_BIPR);
 418
 419         if ((chip->int_reg & SD_EXIST) && (chip->need_reinit & SD_CARD)) {
 420                 release_sdio(chip);
 421                 release_sd_card(chip);
 422
 423                 wait_timeout(100);
 424
 425                 chip->card_exist |= SD_CARD;
 426                 do_reset_sd_card(chip);
 427         }
 428
 429         if ((chip->int_reg & XD_EXIST) && (chip->need_reinit & XD_CARD)) {
 430                 release_xd_card(chip);
 431
 432                 wait_timeout(100);
 433
 434                 chip->card_exist |= XD_CARD;
 435                 do_reset_xd_card(chip);
 436         }
 437
 438         if ((chip->int_reg & MS_EXIST) && (chip->need_reinit & MS_CARD)) {
 439                 release_ms_card(chip);
 440
 441                 wait_timeout(100);
 442
 443                 chip->card_exist |= MS_CARD;
 444                 do_reset_ms_card(chip);
 445         }
 446
 447         chip->need_reinit = 0;
 448 }
 449
 450 #ifdef DISABLE_CARD_INT
 451 void card_cd_debounce(struct rtsx_chip *chip, unsigned long *need_reset,
 452                       unsigned long *need_release)
 453 {
 454         u8 release_map = 0, reset_map = 0;
 455
 456         chip->int_reg = rtsx_readl(chip, RTSX_BIPR);
 457
 458         if (chip->card_exist) {
 459                 if (chip->card_exist & XD_CARD) {
 460                         if (!(chip->int_reg & XD_EXIST))
 461                                 release_map |= XD_CARD;
 462                 } else if (chip->card_exist & SD_CARD) {
 463                         if (!(chip->int_reg & SD_EXIST))
 464                                 release_map |= SD_CARD;
 465                 } else if (chip->card_exist & MS_CARD) {
 466                         if (!(chip->int_reg & MS_EXIST))
 467                                 release_map |= MS_CARD;
 468                 }
 469         } else {
 470                 if (chip->int_reg & XD_EXIST)
 471                         reset_map |= XD_CARD;
 472                 else if (chip->int_reg & SD_EXIST)
 473                         reset_map |= SD_CARD;
 474                 else if (chip->int_reg & MS_EXIST)
 475                         reset_map |= MS_CARD;
 476         }
 477
 478         if (reset_map) {
 479                 int xd_cnt = 0, sd_cnt = 0, ms_cnt = 0;
 480                 int i;
 481
 482                 for (i = 0; i < (DEBOUNCE_CNT); i++) {
 483                         chip->int_reg = rtsx_readl(chip, RTSX_BIPR);
 484
 485                         if (chip->int_reg & XD_EXIST)
 486                                 xd_cnt++;
 487                         else
 488                                 xd_cnt = 0;
 489
 490                         if (chip->int_reg & SD_EXIST)
 491                                 sd_cnt++;
 492                         else
 493                                 sd_cnt = 0;
 494
 495                         if (chip->int_reg & MS_EXIST)
 496                                 ms_cnt++;
 497                         else
 498                                 ms_cnt = 0;
 499
 500                         wait_timeout(30);
 501                 }
 502
 503                 reset_map = 0;
 504                 if (!(chip->card_exist & XD_CARD) &&
 505                     (xd_cnt > (DEBOUNCE_CNT - 1)))
 506                         reset_map |= XD_CARD;
 507                 if (!(chip->card_exist & SD_CARD) &&
 508                     (sd_cnt > (DEBOUNCE_CNT - 1)))
 509                         reset_map |= SD_CARD;
 510                 if (!(chip->card_exist & MS_CARD) &&
 511                     (ms_cnt > (DEBOUNCE_CNT - 1)))
 512                         reset_map |= MS_CARD;
 513         }
 514
 515         if (CHECK_PID(chip, 0x5288) && CHECK_BARO_PKG(chip, QFN))
 516                 rtsx_write_register(chip, HOST_SLEEP_STATE, 0xC0, 0x00);
 517
 518         if (need_reset)
 519                 *need_reset = reset_map;
 520         if (need_release)
 521                 *need_release = release_map;
 522 }
 523 #endif
 524
 525 void rtsx_init_cards(struct rtsx_chip *chip)
 526 {
 527         if (RTSX_TST_DELINK(chip) && (rtsx_get_stat(chip) != RTSX_STAT_SS)) {
 528                 dev_dbg(rtsx_dev(chip), "Reset chip in polling thread!\n");
 529                 rtsx_reset_chip(chip);
 530                 RTSX_CLR_DELINK(chip);
 531         }
 532
 533 #ifdef DISABLE_CARD_INT
 534         card_cd_debounce(chip, &chip->need_reset, &chip->need_release);
 535 #endif
 536
 537         if (chip->need_release) {
 538                 if (CHECK_PID(chip, 0x5288) && CHECK_BARO_PKG(chip, QFN)) {
 539                         if (chip->int_reg & XD_EXIST) {
 540                                 clear_bit(SD_NR, &chip->need_release);
 541                                 clear_bit(MS_NR, &chip->need_release);
 542                         }
 543                 }
 544
 545                 if (!(chip->card_exist & SD_CARD) && !chip->sd_io)
 546                         clear_bit(SD_NR, &chip->need_release);
 547                 if (!(chip->card_exist & XD_CARD))
 548                         clear_bit(XD_NR, &chip->need_release);
 549                 if (!(chip->card_exist & MS_CARD))
 550                         clear_bit(MS_NR, &chip->need_release);
 551
 552                 dev_dbg(rtsx_dev(chip), "chip->need_release = 0x%x\n",
 553                         (unsigned int)(chip->need_release));
 554
 555 #ifdef SUPPORT_OCP
 556                 if (chip->need_release) {
 557                         if (chip->ocp_stat & (CARD_OC_NOW | CARD_OC_EVER))
 558                                 rtsx_write_register(chip, OCPCLR,
 559                                                     CARD_OC_INT_CLR |
 560                                                     CARD_OC_CLR,
 561                                                     CARD_OC_INT_CLR |
 562                                                     CARD_OC_CLR);
 563                         chip->ocp_stat = 0;
 564                 }
 565 #endif
 566                 if (chip->need_release) {
 567                         rtsx_set_stat(chip, RTSX_STAT_RUN);
 568                         rtsx_force_power_on(chip, SSC_PDCTL | OC_PDCTL);
 569                 }
 570
 571                 if (chip->need_release & SD_CARD) {
 572                         clear_bit(SD_NR, &chip->need_release);
 573                         chip->card_exist &= ~SD_CARD;
 574                         chip->card_ejected &= ~SD_CARD;
 575                         chip->card_fail &= ~SD_CARD;
 576                         CLR_BIT(chip->lun_mc, chip->card2lun[SD_CARD]);
 577                         chip->rw_fail_cnt[chip->card2lun[SD_CARD]] = 0;
 578                         rtsx_write_register(chip, RBCTL, RB_FLUSH, RB_FLUSH);
 579
 580                         release_sdio(chip);
 581                         release_sd_card(chip);
 582                 }
 583
 584                 if (chip->need_release & XD_CARD) {
 585                         clear_bit(XD_NR, &chip->need_release);
 586                         chip->card_exist &= ~XD_CARD;
 587                         chip->card_ejected &= ~XD_CARD;
 588                         chip->card_fail &= ~XD_CARD;
 589                         CLR_BIT(chip->lun_mc, chip->card2lun[XD_CARD]);
 590                         chip->rw_fail_cnt[chip->card2lun[XD_CARD]] = 0;
 591
 592                         release_xd_card(chip);
 593
 594                         if (CHECK_PID(chip, 0x5288) &&
 595                             CHECK_BARO_PKG(chip, QFN))
 596                                 rtsx_write_register(chip, HOST_SLEEP_STATE,
 597                                                     0xC0, 0xC0);
 598                 }
 599
 600                 if (chip->need_release & MS_CARD) {
 601                         clear_bit(MS_NR, &chip->need_release);
 602                         chip->card_exist &= ~MS_CARD;
 603                         chip->card_ejected &= ~MS_CARD;
 604                         chip->card_fail &= ~MS_CARD;
 605                         CLR_BIT(chip->lun_mc, chip->card2lun[MS_CARD]);
 606                         chip->rw_fail_cnt[chip->card2lun[MS_CARD]] = 0;
 607
 608                         release_ms_card(chip);
 609                 }
 610
 611                 dev_dbg(rtsx_dev(chip), "chip->card_exist = 0x%x\n",
 612                         chip->card_exist);
 613
 614                 if (!chip->card_exist)
 615                         turn_off_led(chip, LED_GPIO);
 616         }
 617
 618         if (chip->need_reset) {
 619                 dev_dbg(rtsx_dev(chip), "chip->need_reset = 0x%x\n",
 620                         (unsigned int)(chip->need_reset));
 621
 622                 rtsx_reset_cards(chip);
 623         }
 624
 625         if (chip->need_reinit) {
 626                 dev_dbg(rtsx_dev(chip), "chip->need_reinit = 0x%x\n",
 627                         (unsigned int)(chip->need_reinit));
 628
 629                 rtsx_reinit_cards(chip, 0);
 630         }
 631 }
 632
 633 int switch_ssc_clock(struct rtsx_chip *chip, int clk)
 634 {
 635         int retval;
 636         u8 n = (u8)(clk - 2), min_n, max_n;
 637         u8 mcu_cnt, div, max_div, ssc_depth, ssc_depth_mask;
 638         int sd_vpclk_phase_reset = 0;
 639
 640         if (chip->cur_clk == clk)
 641                 return STATUS_SUCCESS;
 642
 643         min_n = 60;
 644         max_n = 120;
 645         max_div = CLK_DIV_4;
 646
 647         dev_dbg(rtsx_dev(chip), "Switch SSC clock to %dMHz (cur_clk = %d)\n",
 648                 clk, chip->cur_clk);
 649
 650         if ((clk <= 2) || (n > max_n)) {
 651                 rtsx_trace(chip);
 652                 return STATUS_FAIL;
 653         }
 654
 655         mcu_cnt = (u8)(125 / clk + 3);
 656         if (mcu_cnt > 7)
 657                 mcu_cnt = 7;
 658
 659         div = CLK_DIV_1;
 660         while ((n < min_n) && (div < max_div)) {
 661                 n = (n + 2) * 2 - 2;
 662                 div++;
 663         }
 664         dev_dbg(rtsx_dev(chip), "n = %d, div = %d\n", n, div);
 665
 666         if (chip->ssc_en) {
 667                 ssc_depth = 0x01;
 668                 n -= 2;
 669         } else {
 670                 ssc_depth = 0;
 671         }
 672
 673         ssc_depth_mask = 0x03;
 674
 675         dev_dbg(rtsx_dev(chip), "ssc_depth = %d\n", ssc_depth);
 676
 677         rtsx_init_cmd(chip);
 678         rtsx_add_cmd(chip, WRITE_REG_CMD, CLK_CTL, CLK_LOW_FREQ, CLK_LOW_FREQ);
 679         rtsx_add_cmd(chip, WRITE_REG_CMD, CLK_DIV, 0xFF, (div << 4) | mcu_cnt);
 680         rtsx_add_cmd(chip, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, 0);
 681         rtsx_add_cmd(chip, WRITE_REG_CMD, SSC_CTL2, ssc_depth_mask, ssc_depth);
 682         rtsx_add_cmd(chip, WRITE_REG_CMD, SSC_DIV_N_0, 0xFF, n);
 683         rtsx_add_cmd(chip, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, SSC_RSTB);
 684         if (sd_vpclk_phase_reset) {
 685                 rtsx_add_cmd(chip, WRITE_REG_CMD, SD_VPCLK0_CTL,
 686                              PHASE_NOT_RESET, 0);
 687                 rtsx_add_cmd(chip, WRITE_REG_CMD, SD_VPCLK0_CTL,
 688                              PHASE_NOT_RESET, PHASE_NOT_RESET);
 689         }
 690
 691         retval = rtsx_send_cmd(chip, 0, WAIT_TIME);
 692         if (retval < 0) {
 693                 rtsx_trace(chip);
 694                 return STATUS_ERROR;
 695         }
 696
 697         udelay(10);
 698         retval = rtsx_write_register(chip, CLK_CTL, CLK_LOW_FREQ, 0);
 699         if (retval) {
 700                 rtsx_trace(chip);
 701                 return retval;
 702         }
 703
 704         chip->cur_clk = clk;
 705
 706         return STATUS_SUCCESS;
 707 }
 708
 709 int switch_normal_clock(struct rtsx_chip *chip, int clk)
 710 {
 711         int retval;
 712         u8 sel, div, mcu_cnt;
 713         int sd_vpclk_phase_reset = 0;
 714
 715         if (chip->cur_clk == clk)
 716                 return STATUS_SUCCESS;
 717
 718         switch (clk) {
 719         case CLK_20:
 720                 dev_dbg(rtsx_dev(chip), "Switch clock to 20MHz\n");
 721                 sel = SSC_80;
 722                 div = CLK_DIV_4;
 723                 mcu_cnt = 7;
 724                 break;
 725
 726         case CLK_30:
 727                 dev_dbg(rtsx_dev(chip), "Switch clock to 30MHz\n");
 728                 sel = SSC_120;
 729                 div = CLK_DIV_4;
 730                 mcu_cnt = 7;
 731                 break;
 732
 733         case CLK_40:
 734                 dev_dbg(rtsx_dev(chip), "Switch clock to 40MHz\n");
 735                 sel = SSC_80;
 736                 div = CLK_DIV_2;
 737                 mcu_cnt = 7;
 738                 break;
 739
 740         case CLK_50:
 741                 dev_dbg(rtsx_dev(chip), "Switch clock to 50MHz\n");
 742                 sel = SSC_100;
 743                 div = CLK_DIV_2;
 744                 mcu_cnt = 6;
 745                 break;
 746
 747         case CLK_60:
 748                 dev_dbg(rtsx_dev(chip), "Switch clock to 60MHz\n");
 749                 sel = SSC_120;
 750                 div = CLK_DIV_2;
 751                 mcu_cnt = 6;
 752                 break;
 753
 754         case CLK_80:
 755                 dev_dbg(rtsx_dev(chip), "Switch clock to 80MHz\n");
 756                 sel = SSC_80;
 757                 div = CLK_DIV_1;
 758                 mcu_cnt = 5;
 759                 break;
 760
 761         case CLK_100:
 762                 dev_dbg(rtsx_dev(chip), "Switch clock to 100MHz\n");
 763                 sel = SSC_100;
 764                 div = CLK_DIV_1;
 765                 mcu_cnt = 5;
 766                 break;
 767
 768         case CLK_120:
 769                 dev_dbg(rtsx_dev(chip), "Switch clock to 120MHz\n");
 770                 sel = SSC_120;
 771                 div = CLK_DIV_1;
 772                 mcu_cnt = 5;
 773                 break;
 774
 775         case CLK_150:
 776                 dev_dbg(rtsx_dev(chip), "Switch clock to 150MHz\n");
 777                 sel = SSC_150;
 778                 div = CLK_DIV_1;
 779                 mcu_cnt = 4;
 780                 break;
 781
 782         case CLK_200:
 783                 dev_dbg(rtsx_dev(chip), "Switch clock to 200MHz\n");
 784                 sel = SSC_200;
 785                 div = CLK_DIV_1;
 786                 mcu_cnt = 4;
 787                 break;
 788
 789         default:
 790                 dev_dbg(rtsx_dev(chip), "Try to switch to an illegal clock (%d)\n",
 791                         clk);
 792                 rtsx_trace(chip);
 793                 return STATUS_FAIL;
 794         }
 795
 796         retval = rtsx_write_register(chip, CLK_CTL, 0xFF, CLK_LOW_FREQ);
 797         if (retval) {
 798                 rtsx_trace(chip);
 799                 return retval;
 800         }
 801         if (sd_vpclk_phase_reset) {
 802                 retval = rtsx_write_register(chip, SD_VPCLK0_CTL,
 803                                              PHASE_NOT_RESET, 0);
 804                 if (retval) {
 805                         rtsx_trace(chip);
 806                         return retval;
 807                 }
 808                 retval = rtsx_write_register(chip, SD_VPCLK1_CTL,
 809                                              PHASE_NOT_RESET, 0);
 810                 if (retval) {
 811                         rtsx_trace(chip);
 812                         return retval;
 813                 }
 814         }
 815         retval = rtsx_write_register(chip, CLK_DIV, 0xFF,
 816                                      (div << 4) | mcu_cnt);
 817         if (retval) {
 818                 rtsx_trace(chip);
 819                 return retval;
 820         }
 821         retval = rtsx_write_register(chip, CLK_SEL, 0xFF, sel);
 822         if (retval) {
 823                 rtsx_trace(chip);
 824                 return retval;
 825         }
 826
 827         if (sd_vpclk_phase_reset) {
 828                 udelay(200);
 829                 retval = rtsx_write_register(chip, SD_VPCLK0_CTL,
 830                                              PHASE_NOT_RESET, PHASE_NOT_RESET);
 831                 if (retval) {
 832                         rtsx_trace(chip);
 833                         return retval;
 834                 }
 835                 retval = rtsx_write_register(chip, SD_VPCLK1_CTL,
 836                                              PHASE_NOT_RESET, PHASE_NOT_RESET);
 837                 if (retval) {
 838                         rtsx_trace(chip);
 839                         return retval;
 840                 }
 841                 udelay(200);
 842         }
 843         retval = rtsx_write_register(chip, CLK_CTL, 0xFF, 0);
 844         if (retval) {
 845                 rtsx_trace(chip);
 846                 return retval;
 847         }
 848
 849         chip->cur_clk = clk;
 850
 851         return STATUS_SUCCESS;
 852 }
 853
 854 void trans_dma_enable(enum dma_data_direction dir, struct rtsx_chip *chip,
 855                       u32 byte_cnt, u8 pack_size)
 856 {
 857         if (pack_size > DMA_1024)
 858                 pack_size = DMA_512;
 859
 860         rtsx_add_cmd(chip, WRITE_REG_CMD, IRQSTAT0, DMA_DONE_INT, DMA_DONE_INT);
 861
 862         rtsx_add_cmd(chip, WRITE_REG_CMD, DMATC3, 0xFF, (u8)(byte_cnt >> 24));
 863         rtsx_add_cmd(chip, WRITE_REG_CMD, DMATC2, 0xFF, (u8)(byte_cnt >> 16));
 864         rtsx_add_cmd(chip, WRITE_REG_CMD, DMATC1, 0xFF, (u8)(byte_cnt >> 8));
 865         rtsx_add_cmd(chip, WRITE_REG_CMD, DMATC0, 0xFF, (u8)byte_cnt);
 866
 867         if (dir == DMA_FROM_DEVICE) {
 868                 rtsx_add_cmd(chip, WRITE_REG_CMD, DMACTL,
 869                              0x03 | DMA_PACK_SIZE_MASK,
 870                              DMA_DIR_FROM_CARD | DMA_EN | pack_size);
 871         } else {
 872                 rtsx_add_cmd(chip, WRITE_REG_CMD, DMACTL,
 873                              0x03 | DMA_PACK_SIZE_MASK,
 874                              DMA_DIR_TO_CARD | DMA_EN | pack_size);
 875         }
 876
 877         rtsx_add_cmd(chip, WRITE_REG_CMD, CARD_DATA_SOURCE, 0x01, RING_BUFFER);
 878 }
 879
 880 int enable_card_clock(struct rtsx_chip *chip, u8 card)
 881 {
 882         int retval;
 883         u8 clk_en = 0;
 884
 885         if (card & XD_CARD)
 886                 clk_en |= XD_CLK_EN;
 887         if (card & SD_CARD)
 888                 clk_en |= SD_CLK_EN;
 889         if (card & MS_CARD)
 890                 clk_en |= MS_CLK_EN;
 891
 892         retval = rtsx_write_register(chip, CARD_CLK_EN, clk_en, clk_en);
 893         if (retval) {
 894                 rtsx_trace(chip);
 895                 return retval;
 896         }
 897
 898         return STATUS_SUCCESS;
 899 }
 900
 901 int disable_card_clock(struct rtsx_chip *chip, u8 card)
 902 {
 903         int retval;
 904         u8 clk_en = 0;
 905
 906         if (card & XD_CARD)
 907                 clk_en |= XD_CLK_EN;
 908         if (card & SD_CARD)
 909                 clk_en |= SD_CLK_EN;
 910         if (card & MS_CARD)
 911                 clk_en |= MS_CLK_EN;
 912
 913         retval = rtsx_write_register(chip, CARD_CLK_EN, clk_en, 0);
 914         if (retval) {
 915                 rtsx_trace(chip);
 916                 return retval;
 917         }
 918
 919         return STATUS_SUCCESS;
 920 }
 921
 922 int card_power_on(struct rtsx_chip *chip, u8 card)
 923 {
 924         int retval;
 925         u8 mask, val1, val2;
 926
 927         if (CHECK_LUN_MODE(chip, SD_MS_2LUN) && (card == MS_CARD)) {
 928                 mask = MS_POWER_MASK;
 929                 val1 = MS_PARTIAL_POWER_ON;
 930                 val2 = MS_POWER_ON;
 931         } else {
 932                 mask = SD_POWER_MASK;
 933                 val1 = SD_PARTIAL_POWER_ON;
 934                 val2 = SD_POWER_ON;
 935         }
 936
 937         rtsx_init_cmd(chip);
 938         rtsx_add_cmd(chip, WRITE_REG_CMD, CARD_PWR_CTL, mask, val1);
 939
 940         retval = rtsx_send_cmd(chip, 0, 100);
 941         if (retval != STATUS_SUCCESS) {
 942                 rtsx_trace(chip);
 943                 return STATUS_FAIL;
 944         }
 945
 946         udelay(chip->pmos_pwr_on_interval);
 947
 948         rtsx_init_cmd(chip);
 949         rtsx_add_cmd(chip, WRITE_REG_CMD, CARD_PWR_CTL, mask, val2);
 950
 951         retval = rtsx_send_cmd(chip, 0, 100);
 952         if (retval != STATUS_SUCCESS) {
 953                 rtsx_trace(chip);
 954                 return STATUS_FAIL;
 955         }
 956
 957         return STATUS_SUCCESS;
 958 }
 959
 960 int card_power_off(struct rtsx_chip *chip, u8 card)
 961 {
 962         int retval;
 963         u8 mask, val;
 964
 965         if (CHECK_LUN_MODE(chip, SD_MS_2LUN) && (card == MS_CARD)) {
 966                 mask = MS_POWER_MASK;
 967                 val = MS_POWER_OFF;
 968         } else {
 969                 mask = SD_POWER_MASK;
 970                 val = SD_POWER_OFF;
 971         }
 972
 973         retval = rtsx_write_register(chip, CARD_PWR_CTL, mask, val);
 974         if (retval) {
 975                 rtsx_trace(chip);
 976                 return retval;
 977         }
 978
 979         return STATUS_SUCCESS;
 980 }
 981
 982 int card_rw(struct scsi_cmnd *srb, struct rtsx_chip *chip,
 983             u32 sec_addr, u16 sec_cnt)
 984 {
 985         int retval;
 986         unsigned int lun = SCSI_LUN(srb);
 987         int i;
 988
 989         if (!chip->rw_card[lun]) {
 990                 rtsx_trace(chip);
 991                 return STATUS_FAIL;
 992         }
 993
 994         for (i = 0; i < 3; i++) {
 995                 chip->rw_need_retry = 0;
 996
 997                 retval = chip->rw_card[lun](srb, chip, sec_addr, sec_cnt);
 998                 if (retval != STATUS_SUCCESS) {
 999                         if (rtsx_check_chip_exist(chip) != STATUS_SUCCESS) {
1000                                 rtsx_release_chip(chip);
1001                                 rtsx_trace(chip);
1002                                 return STATUS_FAIL;
1003                         }
1004                         if (detect_card_cd(chip, chip->cur_card) !=
1005                                                         STATUS_SUCCESS) {
1006                                 rtsx_trace(chip);
1007                                 return STATUS_FAIL;
1008                         }
1009
1010                         if (!chip->rw_need_retry) {
1011                                 dev_dbg(rtsx_dev(chip), "RW fail, but no need to retry\n");
1012                                 break;
1013                         }
1014                 } else {
1015                         chip->rw_need_retry = 0;
1016                         break;
1017                 }
1018
1019                 dev_dbg(rtsx_dev(chip), "Retry RW, (i = %d)\n", i);
1020         }
1021
1022         return retval;
1023 }
1024
1025 int card_share_mode(struct rtsx_chip *chip, int card)
1026 {
1027         int retval;
1028         u8 mask, value;
1029
1030         if (CHECK_PID(chip, 0x5208)) {
1031                 mask = CARD_SHARE_MASK;
1032                 if (card == SD_CARD) {
1033                         value = CARD_SHARE_48_SD;
1034                 } else if (card == MS_CARD) {
1035                         value = CARD_SHARE_48_MS;
1036                 } else if (card == XD_CARD) {
1037                         value = CARD_SHARE_48_XD;
1038                 } else {
1039                         rtsx_trace(chip);
1040                         return STATUS_FAIL;
1041                 }
1042
1043         } else if (CHECK_PID(chip, 0x5288)) {
1044                 mask = 0x03;
1045                 if (card == SD_CARD) {
1046                         value = CARD_SHARE_BAROSSA_SD;
1047                 } else if (card == MS_CARD) {
1048                         value = CARD_SHARE_BAROSSA_MS;
1049                 } else if (card == XD_CARD) {
1050                         value = CARD_SHARE_BAROSSA_XD;
1051                 } else {
1052                         rtsx_trace(chip);
1053                         return STATUS_FAIL;
1054                 }
1055
1056         } else {
1057                 rtsx_trace(chip);
1058                 return STATUS_FAIL;
1059         }
1060
1061         retval = rtsx_write_register(chip, CARD_SHARE_MODE, mask, value);
1062         if (retval) {
1063                 rtsx_trace(chip);
1064                 return retval;
1065         }
1066
1067         return STATUS_SUCCESS;
1068 }
1069
1070 int select_card(struct rtsx_chip *chip, int card)
1071 {
1072         int retval;
1073
1074         if (chip->cur_card != card) {
1075                 u8 mod;
1076
1077                 if (card == SD_CARD) {
1078                         mod = SD_MOD_SEL;
1079                 } else if (card == MS_CARD) {
1080                         mod = MS_MOD_SEL;
1081                 } else if (card == XD_CARD) {
1082                         mod = XD_MOD_SEL;
1083                 } else if (card == SPI_CARD) {
1084                         mod = SPI_MOD_SEL;
1085                 } else {
1086                         rtsx_trace(chip);
1087                         return STATUS_FAIL;
1088                 }
1089
1090                 retval = rtsx_write_register(chip, CARD_SELECT, 0x07, mod);
1091                 if (retval) {
1092                         rtsx_trace(chip);
1093                         return retval;
1094                 }
1095                 chip->cur_card = card;
1096
1097                 retval =  card_share_mode(chip, card);
1098                 if (retval != STATUS_SUCCESS) {
1099                         rtsx_trace(chip);
1100                         return STATUS_FAIL;
1101                 }
1102         }
1103
1104         return STATUS_SUCCESS;
1105 }
1106
1107 void toggle_gpio(struct rtsx_chip *chip, u8 gpio)
1108 {
1109         u8 temp_reg;
1110
1111         rtsx_read_register(chip, CARD_GPIO, &temp_reg);
1112         temp_reg ^= (0x01 << gpio);
1113         rtsx_write_register(chip, CARD_GPIO, 0xFF, temp_reg);
1114 }
1115
1116 void turn_on_led(struct rtsx_chip *chip, u8 gpio)
1117 {
1118         if (CHECK_PID(chip, 0x5288))
1119                 rtsx_write_register(chip, CARD_GPIO, (u8)(1 << gpio),
1120                                     (u8)(1 << gpio));
1121         else
1122                 rtsx_write_register(chip, CARD_GPIO, (u8)(1 << gpio), 0);
1123 }
1124
1125 void turn_off_led(struct rtsx_chip *chip, u8 gpio)
1126 {
1127         if (CHECK_PID(chip, 0x5288))
1128                 rtsx_write_register(chip, CARD_GPIO, (u8)(1 << gpio), 0);
1129         else
1130                 rtsx_write_register(chip, CARD_GPIO, (u8)(1 << gpio),
1131                                     (u8)(1 << gpio));
1132 }
1133
1134 int detect_card_cd(struct rtsx_chip *chip, int card)
1135 {
1136         u32 card_cd, status;
1137
1138         if (card == SD_CARD) {
1139                 card_cd = SD_EXIST;
1140         } else if (card == MS_CARD) {
1141                 card_cd = MS_EXIST;
1142         } else if (card == XD_CARD) {
1143                 card_cd = XD_EXIST;
1144         } else {
1145                 dev_dbg(rtsx_dev(chip), "Wrong card type: 0x%x\n", card);
1146                 rtsx_trace(chip);
1147                 return STATUS_FAIL;
1148         }
1149
1150         status = rtsx_readl(chip, RTSX_BIPR);
1151         if (!(status & card_cd)) {
1152                 rtsx_trace(chip);
1153                 return STATUS_FAIL;
1154         }
1155
1156         return STATUS_SUCCESS;
1157 }
1158
1159 int check_card_exist(struct rtsx_chip *chip, unsigned int lun)
1160 {
1161         if (chip->card_exist & chip->lun2card[lun])
1162                 return 1;
1163
1164         return 0;
1165 }
1166
1167 int check_card_ready(struct rtsx_chip *chip, unsigned int lun)
1168 {
1169         if (chip->card_ready & chip->lun2card[lun])
1170                 return 1;
1171
1172         return 0;
1173 }
1174
1175 int check_card_wp(struct rtsx_chip *chip, unsigned int lun)
1176 {
1177         if (chip->card_wp & chip->lun2card[lun])
1178                 return 1;
1179
1180         return 0;
1181 }
1182
1183 u8 get_lun_card(struct rtsx_chip *chip, unsigned int lun)
1184 {
1185         if ((chip->card_ready & chip->lun2card[lun]) == XD_CARD)
1186                 return (u8)XD_CARD;
1187         else if ((chip->card_ready & chip->lun2card[lun]) == SD_CARD)
1188                 return (u8)SD_CARD;
1189         else if ((chip->card_ready & chip->lun2card[lun]) == MS_CARD)
1190                 return (u8)MS_CARD;
1191
1192         return 0;
1193 }
1194
1195 void eject_card(struct rtsx_chip *chip, unsigned int lun)
1196 {
1197         do_remaining_work(chip);
1198
1199         if ((chip->card_ready & chip->lun2card[lun]) == SD_CARD) {
1200                 release_sd_card(chip);
1201                 chip->card_ejected |= SD_CARD;
1202                 chip->card_ready &= ~SD_CARD;
1203                 chip->capacity[lun] = 0;
1204         } else if ((chip->card_ready & chip->lun2card[lun]) == XD_CARD) {
1205                 release_xd_card(chip);
1206                 chip->card_ejected |= XD_CARD;
1207                 chip->card_ready &= ~XD_CARD;
1208                 chip->capacity[lun] = 0;
1209         } else if ((chip->card_ready & chip->lun2card[lun]) == MS_CARD) {
1210                 release_ms_card(chip);
1211                 chip->card_ejected |= MS_CARD;
1212                 chip->card_ready &= ~MS_CARD;
1213                 chip->capacity[lun] = 0;
1214         }
1215 }