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 | CARD_OC_CLR,
 560                                                 CARD_OC_INT_CLR | CARD_OC_CLR);
 561                         chip->ocp_stat = 0;
 562                 }
 563 #endif
 564                 if (chip->need_release) {
 565                         rtsx_set_stat(chip, RTSX_STAT_RUN);
 566                         rtsx_force_power_on(chip, SSC_PDCTL | OC_PDCTL);
 567                 }
 568
 569                 if (chip->need_release & SD_CARD) {
 570                         clear_bit(SD_NR, &(chip->need_release));
 571                         chip->card_exist &= ~SD_CARD;
 572                         chip->card_ejected &= ~SD_CARD;
 573                         chip->card_fail &= ~SD_CARD;
 574                         CLR_BIT(chip->lun_mc, chip->card2lun[SD_CARD]);
 575                         chip->rw_fail_cnt[chip->card2lun[SD_CARD]] = 0;
 576                         rtsx_write_register(chip, RBCTL, RB_FLUSH, RB_FLUSH);
 577
 578                         release_sdio(chip);
 579                         release_sd_card(chip);
 580                 }
 581
 582                 if (chip->need_release & XD_CARD) {
 583                         clear_bit(XD_NR, &(chip->need_release));
 584                         chip->card_exist &= ~XD_CARD;
 585                         chip->card_ejected &= ~XD_CARD;
 586                         chip->card_fail &= ~XD_CARD;
 587                         CLR_BIT(chip->lun_mc, chip->card2lun[XD_CARD]);
 588                         chip->rw_fail_cnt[chip->card2lun[XD_CARD]] = 0;
 589
 590                         release_xd_card(chip);
 591
 592                         if (CHECK_PID(chip, 0x5288) &&
 593                                         CHECK_BARO_PKG(chip, QFN))
 594                                 rtsx_write_register(chip, HOST_SLEEP_STATE,
 595                                                 0xC0, 0xC0);
 596                 }
 597
 598                 if (chip->need_release & MS_CARD) {
 599                         clear_bit(MS_NR, &(chip->need_release));
 600                         chip->card_exist &= ~MS_CARD;
 601                         chip->card_ejected &= ~MS_CARD;
 602                         chip->card_fail &= ~MS_CARD;
 603                         CLR_BIT(chip->lun_mc, chip->card2lun[MS_CARD]);
 604                         chip->rw_fail_cnt[chip->card2lun[MS_CARD]] = 0;
 605
 606                         release_ms_card(chip);
 607                 }
 608
 609                 dev_dbg(rtsx_dev(chip), "chip->card_exist = 0x%x\n",
 610                         chip->card_exist);
 611
 612                 if (!chip->card_exist)
 613                         turn_off_led(chip, LED_GPIO);
 614         }
 615
 616         if (chip->need_reset) {
 617                 dev_dbg(rtsx_dev(chip), "chip->need_reset = 0x%x\n",
 618                         (unsigned int)(chip->need_reset));
 619
 620                 rtsx_reset_cards(chip);
 621         }
 622
 623         if (chip->need_reinit) {
 624                 dev_dbg(rtsx_dev(chip), "chip->need_reinit = 0x%x\n",
 625                         (unsigned int)(chip->need_reinit));
 626
 627                 rtsx_reinit_cards(chip, 0);
 628         }
 629 }
 630
 631 int switch_ssc_clock(struct rtsx_chip *chip, int clk)
 632 {
 633         int retval;
 634         u8 N = (u8)(clk - 2), min_N, max_N;
 635         u8 mcu_cnt, div, max_div, ssc_depth, ssc_depth_mask;
 636         int sd_vpclk_phase_reset = 0;
 637
 638         if (chip->cur_clk == clk)
 639                 return STATUS_SUCCESS;
 640
 641         min_N = 60;
 642         max_N = 120;
 643         max_div = CLK_DIV_4;
 644
 645         dev_dbg(rtsx_dev(chip), "Switch SSC clock to %dMHz (cur_clk = %d)\n",
 646                 clk, chip->cur_clk);
 647
 648         if ((clk <= 2) || (N > max_N)) {
 649                 rtsx_trace(chip);
 650                 return STATUS_FAIL;
 651         }
 652
 653         mcu_cnt = (u8)(125/clk + 3);
 654         if (mcu_cnt > 7)
 655                 mcu_cnt = 7;
 656
 657         div = CLK_DIV_1;
 658         while ((N < min_N) && (div < max_div)) {
 659                 N = (N + 2) * 2 - 2;
 660                 div++;
 661         }
 662         dev_dbg(rtsx_dev(chip), "N = %d, div = %d\n", N, div);
 663
 664         if (chip->ssc_en) {
 665                 ssc_depth = 0x01;
 666                 N -= 2;
 667         } else {
 668                 ssc_depth = 0;
 669         }
 670
 671         ssc_depth_mask = 0x03;
 672
 673         dev_dbg(rtsx_dev(chip), "ssc_depth = %d\n", ssc_depth);
 674
 675         rtsx_init_cmd(chip);
 676         rtsx_add_cmd(chip, WRITE_REG_CMD, CLK_CTL, CLK_LOW_FREQ, CLK_LOW_FREQ);
 677         rtsx_add_cmd(chip, WRITE_REG_CMD, CLK_DIV, 0xFF, (div << 4) | mcu_cnt);
 678         rtsx_add_cmd(chip, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, 0);
 679         rtsx_add_cmd(chip, WRITE_REG_CMD, SSC_CTL2, ssc_depth_mask, ssc_depth);
 680         rtsx_add_cmd(chip, WRITE_REG_CMD, SSC_DIV_N_0, 0xFF, N);
 681         rtsx_add_cmd(chip, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, SSC_RSTB);
 682         if (sd_vpclk_phase_reset) {
 683                 rtsx_add_cmd(chip, WRITE_REG_CMD, SD_VPCLK0_CTL,
 684                         PHASE_NOT_RESET, 0);
 685                 rtsx_add_cmd(chip, WRITE_REG_CMD, SD_VPCLK0_CTL,
 686                         PHASE_NOT_RESET, PHASE_NOT_RESET);
 687         }
 688
 689         retval = rtsx_send_cmd(chip, 0, WAIT_TIME);
 690         if (retval < 0) {
 691                 rtsx_trace(chip);
 692                 return STATUS_ERROR;
 693         }
 694
 695         udelay(10);
 696         retval = rtsx_write_register(chip, CLK_CTL, CLK_LOW_FREQ, 0);
 697         if (retval) {
 698                 rtsx_trace(chip);
 699                 return retval;
 700         }
 701
 702         chip->cur_clk = clk;
 703
 704         return STATUS_SUCCESS;
 705 }
 706
 707 int switch_normal_clock(struct rtsx_chip *chip, int clk)
 708 {
 709         int retval;
 710         u8 sel, div, mcu_cnt;
 711         int sd_vpclk_phase_reset = 0;
 712
 713         if (chip->cur_clk == clk)
 714                 return STATUS_SUCCESS;
 715
 716         switch (clk) {
 717         case CLK_20:
 718                 dev_dbg(rtsx_dev(chip), "Switch clock to 20MHz\n");
 719                 sel = SSC_80;
 720                 div = CLK_DIV_4;
 721                 mcu_cnt = 7;
 722                 break;
 723
 724         case CLK_30:
 725                 dev_dbg(rtsx_dev(chip), "Switch clock to 30MHz\n");
 726                 sel = SSC_120;
 727                 div = CLK_DIV_4;
 728                 mcu_cnt = 7;
 729                 break;
 730
 731         case CLK_40:
 732                 dev_dbg(rtsx_dev(chip), "Switch clock to 40MHz\n");
 733                 sel = SSC_80;
 734                 div = CLK_DIV_2;
 735                 mcu_cnt = 7;
 736                 break;
 737
 738         case CLK_50:
 739                 dev_dbg(rtsx_dev(chip), "Switch clock to 50MHz\n");
 740                 sel = SSC_100;
 741                 div = CLK_DIV_2;
 742                 mcu_cnt = 6;
 743                 break;
 744
 745         case CLK_60:
 746                 dev_dbg(rtsx_dev(chip), "Switch clock to 60MHz\n");
 747                 sel = SSC_120;
 748                 div = CLK_DIV_2;
 749                 mcu_cnt = 6;
 750                 break;
 751
 752         case CLK_80:
 753                 dev_dbg(rtsx_dev(chip), "Switch clock to 80MHz\n");
 754                 sel = SSC_80;
 755                 div = CLK_DIV_1;
 756                 mcu_cnt = 5;
 757                 break;
 758
 759         case CLK_100:
 760                 dev_dbg(rtsx_dev(chip), "Switch clock to 100MHz\n");
 761                 sel = SSC_100;
 762                 div = CLK_DIV_1;
 763                 mcu_cnt = 5;
 764                 break;
 765
 766         case CLK_120:
 767                 dev_dbg(rtsx_dev(chip), "Switch clock to 120MHz\n");
 768                 sel = SSC_120;
 769                 div = CLK_DIV_1;
 770                 mcu_cnt = 5;
 771                 break;
 772
 773         case CLK_150:
 774                 dev_dbg(rtsx_dev(chip), "Switch clock to 150MHz\n");
 775                 sel = SSC_150;
 776                 div = CLK_DIV_1;
 777                 mcu_cnt = 4;
 778                 break;
 779
 780         case CLK_200:
 781                 dev_dbg(rtsx_dev(chip), "Switch clock to 200MHz\n");
 782                 sel = SSC_200;
 783                 div = CLK_DIV_1;
 784                 mcu_cnt = 4;
 785                 break;
 786
 787         default:
 788                 dev_dbg(rtsx_dev(chip), "Try to switch to an illegal clock (%d)\n",
 789                         clk);
 790                 rtsx_trace(chip);
 791                 return STATUS_FAIL;
 792         }
 793
 794         retval = rtsx_write_register(chip, CLK_CTL, 0xFF, CLK_LOW_FREQ);
 795         if (retval) {
 796                 rtsx_trace(chip);
 797                 return retval;
 798         }
 799         if (sd_vpclk_phase_reset) {
 800                 retval = rtsx_write_register(chip, SD_VPCLK0_CTL,
 801                                              PHASE_NOT_RESET, 0);
 802                 if (retval) {
 803                         rtsx_trace(chip);
 804                         return retval;
 805                 }
 806                 retval = rtsx_write_register(chip, SD_VPCLK1_CTL,
 807                                              PHASE_NOT_RESET, 0);
 808                 if (retval) {
 809                         rtsx_trace(chip);
 810                         return retval;
 811                 }
 812         }
 813         retval = rtsx_write_register(chip, CLK_DIV, 0xFF,
 814                                      (div << 4) | mcu_cnt);
 815         if (retval) {
 816                 rtsx_trace(chip);
 817                 return retval;
 818         }
 819         retval = rtsx_write_register(chip, CLK_SEL, 0xFF, sel);
 820         if (retval) {
 821                 rtsx_trace(chip);
 822                 return retval;
 823         }
 824
 825         if (sd_vpclk_phase_reset) {
 826                 udelay(200);
 827                 retval = rtsx_write_register(chip, SD_VPCLK0_CTL,
 828                                              PHASE_NOT_RESET, PHASE_NOT_RESET);
 829                 if (retval) {
 830                         rtsx_trace(chip);
 831                         return retval;
 832                 }
 833                 retval = rtsx_write_register(chip, SD_VPCLK1_CTL,
 834                                              PHASE_NOT_RESET, PHASE_NOT_RESET);
 835                 if (retval) {
 836                         rtsx_trace(chip);
 837                         return retval;
 838                 }
 839                 udelay(200);
 840         }
 841         retval = rtsx_write_register(chip, CLK_CTL, 0xFF, 0);
 842         if (retval) {
 843                 rtsx_trace(chip);
 844                 return retval;
 845         }
 846
 847         chip->cur_clk = clk;
 848
 849         return STATUS_SUCCESS;
 850 }
 851
 852 void trans_dma_enable(enum dma_data_direction dir, struct rtsx_chip *chip,
 853                 u32 byte_cnt, u8 pack_size)
 854 {
 855         if (pack_size > DMA_1024)
 856                 pack_size = DMA_512;
 857
 858         rtsx_add_cmd(chip, WRITE_REG_CMD, IRQSTAT0, DMA_DONE_INT, DMA_DONE_INT);
 859
 860         rtsx_add_cmd(chip, WRITE_REG_CMD, DMATC3, 0xFF, (u8)(byte_cnt >> 24));
 861         rtsx_add_cmd(chip, WRITE_REG_CMD, DMATC2, 0xFF, (u8)(byte_cnt >> 16));
 862         rtsx_add_cmd(chip, WRITE_REG_CMD, DMATC1, 0xFF, (u8)(byte_cnt >> 8));
 863         rtsx_add_cmd(chip, WRITE_REG_CMD, DMATC0, 0xFF, (u8)byte_cnt);
 864
 865         if (dir == DMA_FROM_DEVICE) {
 866                 rtsx_add_cmd(chip, WRITE_REG_CMD, DMACTL,
 867                         0x03 | DMA_PACK_SIZE_MASK,
 868                              DMA_DIR_FROM_CARD | DMA_EN | pack_size);
 869         } else {
 870                 rtsx_add_cmd(chip, WRITE_REG_CMD, DMACTL,
 871                         0x03 | DMA_PACK_SIZE_MASK,
 872                              DMA_DIR_TO_CARD | DMA_EN | pack_size);
 873         }
 874
 875         rtsx_add_cmd(chip, WRITE_REG_CMD, CARD_DATA_SOURCE, 0x01, RING_BUFFER);
 876 }
 877
 878 int enable_card_clock(struct rtsx_chip *chip, u8 card)
 879 {
 880         int retval;
 881         u8 clk_en = 0;
 882
 883         if (card & XD_CARD)
 884                 clk_en |= XD_CLK_EN;
 885         if (card & SD_CARD)
 886                 clk_en |= SD_CLK_EN;
 887         if (card & MS_CARD)
 888                 clk_en |= MS_CLK_EN;
 889
 890         retval = rtsx_write_register(chip, CARD_CLK_EN, clk_en, clk_en);
 891         if (retval) {
 892                 rtsx_trace(chip);
 893                 return retval;
 894         }
 895
 896         return STATUS_SUCCESS;
 897 }
 898
 899 int disable_card_clock(struct rtsx_chip *chip, u8 card)
 900 {
 901         int retval;
 902         u8 clk_en = 0;
 903
 904         if (card & XD_CARD)
 905                 clk_en |= XD_CLK_EN;
 906         if (card & SD_CARD)
 907                 clk_en |= SD_CLK_EN;
 908         if (card & MS_CARD)
 909                 clk_en |= MS_CLK_EN;
 910
 911         retval = rtsx_write_register(chip, CARD_CLK_EN, clk_en, 0);
 912         if (retval) {
 913                 rtsx_trace(chip);
 914                 return retval;
 915         }
 916
 917         return STATUS_SUCCESS;
 918 }
 919
 920 int card_power_on(struct rtsx_chip *chip, u8 card)
 921 {
 922         int retval;
 923         u8 mask, val1, val2;
 924
 925         if (CHECK_LUN_MODE(chip, SD_MS_2LUN) && (card == MS_CARD)) {
 926                 mask = MS_POWER_MASK;
 927                 val1 = MS_PARTIAL_POWER_ON;
 928                 val2 = MS_POWER_ON;
 929         } else {
 930                 mask = SD_POWER_MASK;
 931                 val1 = SD_PARTIAL_POWER_ON;
 932                 val2 = SD_POWER_ON;
 933         }
 934
 935         rtsx_init_cmd(chip);
 936         rtsx_add_cmd(chip, WRITE_REG_CMD, CARD_PWR_CTL, mask, val1);
 937
 938         retval = rtsx_send_cmd(chip, 0, 100);
 939         if (retval != STATUS_SUCCESS) {
 940                 rtsx_trace(chip);
 941                 return STATUS_FAIL;
 942         }
 943
 944         udelay(chip->pmos_pwr_on_interval);
 945
 946         rtsx_init_cmd(chip);
 947         rtsx_add_cmd(chip, WRITE_REG_CMD, CARD_PWR_CTL, mask, val2);
 948
 949         retval = rtsx_send_cmd(chip, 0, 100);
 950         if (retval != STATUS_SUCCESS) {
 951                 rtsx_trace(chip);
 952                 return STATUS_FAIL;
 953         }
 954
 955         return STATUS_SUCCESS;
 956 }
 957
 958 int card_power_off(struct rtsx_chip *chip, u8 card)
 959 {
 960         int retval;
 961         u8 mask, val;
 962
 963         if (CHECK_LUN_MODE(chip, SD_MS_2LUN) && (card == MS_CARD)) {
 964                 mask = MS_POWER_MASK;
 965                 val = MS_POWER_OFF;
 966         } else {
 967                 mask = SD_POWER_MASK;
 968                 val = SD_POWER_OFF;
 969         }
 970
 971         retval = rtsx_write_register(chip, CARD_PWR_CTL, mask, val);
 972         if (retval) {
 973                 rtsx_trace(chip);
 974                 return retval;
 975         }
 976
 977         return STATUS_SUCCESS;
 978 }
 979
 980 int card_rw(struct scsi_cmnd *srb, struct rtsx_chip *chip,
 981         u32 sec_addr, u16 sec_cnt)
 982 {
 983         int retval;
 984         unsigned int lun = SCSI_LUN(srb);
 985         int i;
 986
 987         if (chip->rw_card[lun] == NULL) {
 988                 rtsx_trace(chip);
 989                 return STATUS_FAIL;
 990         }
 991
 992         for (i = 0; i < 3; i++) {
 993                 chip->rw_need_retry = 0;
 994
 995                 retval = chip->rw_card[lun](srb, chip, sec_addr, sec_cnt);
 996                 if (retval != STATUS_SUCCESS) {
 997                         if (rtsx_check_chip_exist(chip) != STATUS_SUCCESS) {
 998                                 rtsx_release_chip(chip);
 999                                 rtsx_trace(chip);
1000                                 return STATUS_FAIL;
1001                         }
1002                         if (detect_card_cd(chip, chip->cur_card) !=
1003                                                         STATUS_SUCCESS) {
1004                                 rtsx_trace(chip);
1005                                 return STATUS_FAIL;
1006                         }
1007
1008                         if (!chip->rw_need_retry) {
1009                                 dev_dbg(rtsx_dev(chip), "RW fail, but no need to retry\n");
1010                                 break;
1011                         }
1012                 } else {
1013                         chip->rw_need_retry = 0;
1014                         break;
1015                 }
1016
1017                 dev_dbg(rtsx_dev(chip), "Retry RW, (i = %d)\n", i);
1018         }
1019
1020         return retval;
1021 }
1022
1023 int card_share_mode(struct rtsx_chip *chip, int card)
1024 {
1025         int retval;
1026         u8 mask, value;
1027
1028         if (CHECK_PID(chip, 0x5208)) {
1029                 mask = CARD_SHARE_MASK;
1030                 if (card == SD_CARD)
1031                         value = CARD_SHARE_48_SD;
1032                 else if (card == MS_CARD)
1033                         value = CARD_SHARE_48_MS;
1034                 else if (card == XD_CARD)
1035                         value = CARD_SHARE_48_XD;
1036                 else {
1037                         rtsx_trace(chip);
1038                         return STATUS_FAIL;
1039                 }
1040
1041         } else if (CHECK_PID(chip, 0x5288)) {
1042                 mask = 0x03;
1043                 if (card == SD_CARD)
1044                         value = CARD_SHARE_BAROSSA_SD;
1045                 else if (card == MS_CARD)
1046                         value = CARD_SHARE_BAROSSA_MS;
1047                 else if (card == XD_CARD)
1048                         value = CARD_SHARE_BAROSSA_XD;
1049                 else {
1050                         rtsx_trace(chip);
1051                         return STATUS_FAIL;
1052                 }
1053
1054         } else {
1055                 rtsx_trace(chip);
1056                 return STATUS_FAIL;
1057         }
1058
1059         retval = rtsx_write_register(chip, CARD_SHARE_MODE, mask, value);
1060         if (retval) {
1061                 rtsx_trace(chip);
1062                 return retval;
1063         }
1064
1065         return STATUS_SUCCESS;
1066 }
1067
1068
1069 int select_card(struct rtsx_chip *chip, int card)
1070 {
1071         int retval;
1072
1073         if (chip->cur_card != card) {
1074                 u8 mod;
1075
1076                 if (card == SD_CARD)
1077                         mod = SD_MOD_SEL;
1078                 else if (card == MS_CARD)
1079                         mod = MS_MOD_SEL;
1080                 else if (card == XD_CARD)
1081                         mod = XD_MOD_SEL;
1082                 else if (card == SPI_CARD)
1083                         mod = SPI_MOD_SEL;
1084                 else {
1085                         rtsx_trace(chip);
1086                         return STATUS_FAIL;
1087                 }
1088
1089                 retval = rtsx_write_register(chip, CARD_SELECT, 0x07, mod);
1090                 if (retval) {
1091                         rtsx_trace(chip);
1092                         return retval;
1093                 }
1094                 chip->cur_card = card;
1095
1096                 retval =  card_share_mode(chip, card);
1097                 if (retval != STATUS_SUCCESS) {
1098                         rtsx_trace(chip);
1099                         return STATUS_FAIL;
1100                 }
1101         }
1102
1103         return STATUS_SUCCESS;
1104 }
1105
1106 void toggle_gpio(struct rtsx_chip *chip, u8 gpio)
1107 {
1108         u8 temp_reg;
1109
1110         rtsx_read_register(chip, CARD_GPIO, &temp_reg);
1111         temp_reg ^= (0x01 << gpio);
1112         rtsx_write_register(chip, CARD_GPIO, 0xFF, temp_reg);
1113 }
1114
1115 void turn_on_led(struct rtsx_chip *chip, u8 gpio)
1116 {
1117         if (CHECK_PID(chip, 0x5288))
1118                 rtsx_write_register(chip, CARD_GPIO, (u8)(1 << gpio),
1119                                 (u8)(1 << gpio));
1120         else
1121                 rtsx_write_register(chip, CARD_GPIO, (u8)(1 << gpio), 0);
1122 }
1123
1124 void turn_off_led(struct rtsx_chip *chip, u8 gpio)
1125 {
1126         if (CHECK_PID(chip, 0x5288))
1127                 rtsx_write_register(chip, CARD_GPIO, (u8)(1 << gpio), 0);
1128         else
1129                 rtsx_write_register(chip, CARD_GPIO, (u8)(1 << gpio),
1130                                 (u8)(1 << gpio));
1131 }
1132
1133 int detect_card_cd(struct rtsx_chip *chip, int card)
1134 {
1135         u32 card_cd, status;
1136
1137         if (card == SD_CARD) {
1138                 card_cd = SD_EXIST;
1139         } else if (card == MS_CARD) {
1140                 card_cd = MS_EXIST;
1141         } else if (card == XD_CARD) {
1142                 card_cd = XD_EXIST;
1143         } else {
1144                 dev_dbg(rtsx_dev(chip), "Wrong card type: 0x%x\n", card);
1145                 rtsx_trace(chip);
1146                 return STATUS_FAIL;
1147         }
1148
1149         status = rtsx_readl(chip, RTSX_BIPR);
1150         if (!(status & card_cd)) {
1151                 rtsx_trace(chip);
1152                 return STATUS_FAIL;
1153         }
1154
1155         return STATUS_SUCCESS;
1156 }
1157
1158 int check_card_exist(struct rtsx_chip *chip, unsigned int lun)
1159 {
1160         if (chip->card_exist & chip->lun2card[lun])
1161                 return 1;
1162
1163         return 0;
1164 }
1165
1166 int check_card_ready(struct rtsx_chip *chip, unsigned int lun)
1167 {
1168         if (chip->card_ready & chip->lun2card[lun])
1169                 return 1;
1170
1171         return 0;
1172 }
1173
1174 int check_card_wp(struct rtsx_chip *chip, unsigned int lun)
1175 {
1176         if (chip->card_wp & chip->lun2card[lun])
1177                 return 1;
1178
1179         return 0;
1180 }
1181
1182 u8 get_lun_card(struct rtsx_chip *chip, unsigned int lun)
1183 {
1184         if ((chip->card_ready & chip->lun2card[lun]) == XD_CARD)
1185                 return (u8)XD_CARD;
1186         else if ((chip->card_ready & chip->lun2card[lun]) == SD_CARD)
1187                 return (u8)SD_CARD;
1188         else if ((chip->card_ready & chip->lun2card[lun]) == MS_CARD)
1189                 return (u8)MS_CARD;
1190
1191         return 0;
1192 }
1193
1194 void eject_card(struct rtsx_chip *chip, unsigned int lun)
1195 {
1196         do_remaining_work(chip);
1197
1198         if ((chip->card_ready & chip->lun2card[lun]) == SD_CARD) {
1199                 release_sd_card(chip);
1200                 chip->card_ejected |= SD_CARD;
1201                 chip->card_ready &= ~SD_CARD;
1202                 chip->capacity[lun] = 0;
1203         } else if ((chip->card_ready & chip->lun2card[lun]) == XD_CARD) {
1204                 release_xd_card(chip);
1205                 chip->card_ejected |= XD_CARD;
1206                 chip->card_ready &= ~XD_CARD;
1207                 chip->capacity[lun] = 0;
1208         } else if ((chip->card_ready & chip->lun2card[lun]) == MS_CARD) {
1209                 release_ms_card(chip);
1210                 chip->card_ejected |= MS_CARD;
1211                 chip->card_ready &= ~MS_CARD;
1212                 chip->capacity[lun] = 0;
1213         }
1214 }