drivers/mmc/sdhci.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2011, Marvell Semiconductor Inc.
   4  * Lei Wen <leiwen@marvell.com>
   5  *
   6  * Back ported to the 8xx platform (from the 8260 platform) by
   7  * Murray.Jensen@cmst.csiro.au, 27-Jan-01.
   8  */
   9
  10 #include <common.h>
  11 #include <errno.h>
  12 #include <malloc.h>
  13 #include <mmc.h>
  14 #include <sdhci.h>
  15
  16 #if defined(CONFIG_FIXED_SDHCI_ALIGNED_BUFFER)
  17 void *aligned_buffer = (void *)CONFIG_FIXED_SDHCI_ALIGNED_BUFFER;
  18 #else
  19 void *aligned_buffer;
  20 #endif
  21
  22 static void sdhci_reset(struct sdhci_host *host, u8 mask)
  23 {
  24         unsigned long timeout;
  25
  26         /* Wait max 100 ms */
  27         timeout = 100;
  28         sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET);
  29         while (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask) {
  30                 if (timeout == 0) {
  31                         printf("%s: Reset 0x%x never completed.\n",
  32                                __func__, (int)mask);
  33                         return;
  34                 }
  35                 timeout--;
  36                 udelay(1000);
  37         }
  38 }
  39
  40 static void sdhci_cmd_done(struct sdhci_host *host, struct mmc_cmd *cmd)
  41 {
  42         int i;
  43         if (cmd->resp_type & MMC_RSP_136) {
  44                 /* CRC is stripped so we need to do some shifting. */
  45                 for (i = 0; i < 4; i++) {
  46                         cmd->response[i] = sdhci_readl(host,
  47                                         SDHCI_RESPONSE + (3-i)*4) << 8;
  48                         if (i != 3)
  49                                 cmd->response[i] |= sdhci_readb(host,
  50                                                 SDHCI_RESPONSE + (3-i)*4-1);
  51                 }
  52         } else {
  53                 cmd->response[0] = sdhci_readl(host, SDHCI_RESPONSE);
  54         }
  55 }
  56
  57 static void sdhci_transfer_pio(struct sdhci_host *host, struct mmc_data *data)
  58 {
  59         int i;
  60         char *offs;
  61         for (i = 0; i < data->blocksize; i += 4) {
  62                 offs = data->dest + i;
  63                 if (data->flags == MMC_DATA_READ)
  64                         *(u32 *)offs = sdhci_readl(host, SDHCI_BUFFER);
  65                 else
  66                         sdhci_writel(host, *(u32 *)offs, SDHCI_BUFFER);
  67         }
  68 }
  69
  70 static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data,
  71                                 unsigned int start_addr)
  72 {
  73         unsigned int stat, rdy, mask, timeout, block = 0;
  74         bool transfer_done = false;
  75 #ifdef CONFIG_MMC_SDHCI_SDMA
  76         unsigned char ctrl;
  77         ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
  78         ctrl &= ~SDHCI_CTRL_DMA_MASK;
  79         sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
  80 #endif
  81
  82         timeout = 1000000;
  83         rdy = SDHCI_INT_SPACE_AVAIL | SDHCI_INT_DATA_AVAIL;
  84         mask = SDHCI_DATA_AVAILABLE | SDHCI_SPACE_AVAILABLE;
  85         do {
  86                 stat = sdhci_readl(host, SDHCI_INT_STATUS);
  87                 if (stat & SDHCI_INT_ERROR) {
  88                         pr_debug("%s: Error detected in status(0x%X)!\n",
  89                                  __func__, stat);
  90                         return -EIO;
  91                 }
  92                 if (!transfer_done && (stat & rdy)) {
  93                         if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & mask))
  94                                 continue;
  95                         sdhci_writel(host, rdy, SDHCI_INT_STATUS);
  96                         sdhci_transfer_pio(host, data);
  97                         data->dest += data->blocksize;
  98                         if (++block >= data->blocks) {
  99                                 /* Keep looping until the SDHCI_INT_DATA_END is
 100                                  * cleared, even if we finished sending all the
 101                                  * blocks.
 102                                  */
 103                                 transfer_done = true;
 104                                 continue;
 105                         }
 106                 }
 107 #ifdef CONFIG_MMC_SDHCI_SDMA
 108                 if (!transfer_done && (stat & SDHCI_INT_DMA_END)) {
 109                         sdhci_writel(host, SDHCI_INT_DMA_END, SDHCI_INT_STATUS);
 110                         start_addr &= ~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1);
 111                         start_addr += SDHCI_DEFAULT_BOUNDARY_SIZE;
 112                         sdhci_writel(host, start_addr, SDHCI_DMA_ADDRESS);
 113                 }
 114 #endif
 115                 if (timeout-- > 0)
 116                         udelay(10);
 117                 else {
 118                         printf("%s: Transfer data timeout\n", __func__);
 119                         return -ETIMEDOUT;
 120                 }
 121         } while (!(stat & SDHCI_INT_DATA_END));
 122         return 0;
 123 }
 124
 125 /*
 126  * No command will be sent by driver if card is busy, so driver must wait
 127  * for card ready state.
 128  * Every time when card is busy after timeout then (last) timeout value will be
 129  * increased twice but only if it doesn't exceed global defined maximum.
 130  * Each function call will use last timeout value.
 131  */
 132 #define SDHCI_CMD_MAX_TIMEOUT                   3200
 133 #define SDHCI_CMD_DEFAULT_TIMEOUT               100
 134 #define SDHCI_READ_STATUS_TIMEOUT               1000
 135
 136 #ifdef CONFIG_DM_MMC
 137 static int sdhci_send_command(struct udevice *dev, struct mmc_cmd *cmd,
 138                               struct mmc_data *data)
 139 {
 140         struct mmc *mmc = mmc_get_mmc_dev(dev);
 141
 142 #else
 143 static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd,
 144                               struct mmc_data *data)
 145 {
 146 #endif
 147         struct sdhci_host *host = mmc->priv;
 148         unsigned int stat = 0;
 149         int ret = 0;
 150         int trans_bytes = 0, is_aligned = 1;
 151         u32 mask, flags, mode;
 152         unsigned int time = 0, start_addr = 0;
 153         int mmc_dev = mmc_get_blk_desc(mmc)->devnum;
 154         ulong start = get_timer(0);
 155
 156         /* Timeout unit - ms */
 157         static unsigned int cmd_timeout = SDHCI_CMD_DEFAULT_TIMEOUT;
 158
 159         mask = SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT;
 160
 161         /* We shouldn't wait for data inihibit for stop commands, even
 162            though they might use busy signaling */
 163         if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION ||
 164             cmd->cmdidx ==  MMC_CMD_SEND_TUNING_BLOCK)
 165                 mask &= ~SDHCI_DATA_INHIBIT;
 166
 167         while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) {
 168                 if (time >= cmd_timeout) {
 169                         printf("%s: MMC: %d busy ", __func__, mmc_dev);
 170                         if (2 * cmd_timeout <= SDHCI_CMD_MAX_TIMEOUT) {
 171                                 cmd_timeout += cmd_timeout;
 172                                 printf("timeout increasing to: %u ms.\n",
 173                                        cmd_timeout);
 174                         } else {
 175                                 puts("timeout.\n");
 176                                 return -ECOMM;
 177                         }
 178                 }
 179                 time++;
 180                 udelay(1000);
 181         }
 182
 183         sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_STATUS);
 184
 185         mask = SDHCI_INT_RESPONSE;
 186         if (cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK)
 187                 mask = SDHCI_INT_DATA_AVAIL;
 188
 189         if (!(cmd->resp_type & MMC_RSP_PRESENT))
 190                 flags = SDHCI_CMD_RESP_NONE;
 191         else if (cmd->resp_type & MMC_RSP_136)
 192                 flags = SDHCI_CMD_RESP_LONG;
 193         else if (cmd->resp_type & MMC_RSP_BUSY) {
 194                 flags = SDHCI_CMD_RESP_SHORT_BUSY;
 195                 if (data)
 196                         mask |= SDHCI_INT_DATA_END;
 197         } else
 198                 flags = SDHCI_CMD_RESP_SHORT;
 199
 200         if (cmd->resp_type & MMC_RSP_CRC)
 201                 flags |= SDHCI_CMD_CRC;
 202         if (cmd->resp_type & MMC_RSP_OPCODE)
 203                 flags |= SDHCI_CMD_INDEX;
 204         if (data || cmd->cmdidx ==  MMC_CMD_SEND_TUNING_BLOCK)
 205                 flags |= SDHCI_CMD_DATA;
 206
 207         /* Set Transfer mode regarding to data flag */
 208         if (data) {
 209                 sdhci_writeb(host, 0xe, SDHCI_TIMEOUT_CONTROL);
 210                 mode = SDHCI_TRNS_BLK_CNT_EN;
 211                 trans_bytes = data->blocks * data->blocksize;
 212                 if (data->blocks > 1)
 213                         mode |= SDHCI_TRNS_MULTI;
 214
 215                 if (data->flags == MMC_DATA_READ)
 216                         mode |= SDHCI_TRNS_READ;
 217
 218 #ifdef CONFIG_MMC_SDHCI_SDMA
 219                 if (data->flags == MMC_DATA_READ)
 220                         start_addr = (unsigned long)data->dest;
 221                 else
 222                         start_addr = (unsigned long)data->src;
 223                 if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) &&
 224                                 (start_addr & 0x7) != 0x0) {
 225                         is_aligned = 0;
 226                         start_addr = (unsigned long)aligned_buffer;
 227                         if (data->flags != MMC_DATA_READ)
 228                                 memcpy(aligned_buffer, data->src, trans_bytes);
 229                 }
 230
 231 #if defined(CONFIG_FIXED_SDHCI_ALIGNED_BUFFER)
 232                 /*
 233                  * Always use this bounce-buffer when
 234                  * CONFIG_FIXED_SDHCI_ALIGNED_BUFFER is defined
 235                  */
 236                 is_aligned = 0;
 237                 start_addr = (unsigned long)aligned_buffer;
 238                 if (data->flags != MMC_DATA_READ)
 239                         memcpy(aligned_buffer, data->src, trans_bytes);
 240 #endif
 241
 242                 sdhci_writel(host, start_addr, SDHCI_DMA_ADDRESS);
 243                 mode |= SDHCI_TRNS_DMA;
 244 #endif
 245                 sdhci_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG,
 246                                 data->blocksize),
 247                                 SDHCI_BLOCK_SIZE);
 248                 sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT);
 249                 sdhci_writew(host, mode, SDHCI_TRANSFER_MODE);
 250         } else if (cmd->resp_type & MMC_RSP_BUSY) {
 251                 sdhci_writeb(host, 0xe, SDHCI_TIMEOUT_CONTROL);
 252         }
 253
 254         sdhci_writel(host, cmd->cmdarg, SDHCI_ARGUMENT);
 255 #ifdef CONFIG_MMC_SDHCI_SDMA
 256         if (data) {
 257                 trans_bytes = ALIGN(trans_bytes, CONFIG_SYS_CACHELINE_SIZE);
 258                 flush_cache(start_addr, trans_bytes);
 259         }
 260 #endif
 261         sdhci_writew(host, SDHCI_MAKE_CMD(cmd->cmdidx, flags), SDHCI_COMMAND);
 262         start = get_timer(0);
 263         do {
 264                 stat = sdhci_readl(host, SDHCI_INT_STATUS);
 265                 if (stat & SDHCI_INT_ERROR)
 266                         break;
 267
 268                 if (get_timer(start) >= SDHCI_READ_STATUS_TIMEOUT) {
 269                         if (host->quirks & SDHCI_QUIRK_BROKEN_R1B) {
 270                                 return 0;
 271                         } else {
 272                                 printf("%s: Timeout for status update!\n",
 273                                        __func__);
 274                                 return -ETIMEDOUT;
 275                         }
 276                 }
 277         } while ((stat & mask) != mask);
 278
 279         if ((stat & (SDHCI_INT_ERROR | mask)) == mask) {
 280                 sdhci_cmd_done(host, cmd);
 281                 sdhci_writel(host, mask, SDHCI_INT_STATUS);
 282         } else
 283                 ret = -1;
 284
 285         if (!ret && data)
 286                 ret = sdhci_transfer_data(host, data, start_addr);
 287
 288         if (host->quirks & SDHCI_QUIRK_WAIT_SEND_CMD)
 289                 udelay(1000);
 290
 291         stat = sdhci_readl(host, SDHCI_INT_STATUS);
 292         sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_STATUS);
 293         if (!ret) {
 294                 if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) &&
 295                                 !is_aligned && (data->flags == MMC_DATA_READ))
 296                         memcpy(data->dest, aligned_buffer, trans_bytes);
 297                 return 0;
 298         }
 299
 300         sdhci_reset(host, SDHCI_RESET_CMD);
 301         sdhci_reset(host, SDHCI_RESET_DATA);
 302         if (stat & SDHCI_INT_TIMEOUT)
 303                 return -ETIMEDOUT;
 304         else
 305                 return -ECOMM;
 306 }
 307
 308 #if defined(CONFIG_DM_MMC) && defined(MMC_SUPPORTS_TUNING)
 309 static int sdhci_execute_tuning(struct udevice *dev, uint opcode)
 310 {
 311         int err;
 312         struct mmc *mmc = mmc_get_mmc_dev(dev);
 313         struct sdhci_host *host = mmc->priv;
 314
 315         debug("%s\n", __func__);
 316
 317         if (host->ops && host->ops->platform_execute_tuning) {
 318                 err = host->ops->platform_execute_tuning(mmc, opcode);
 319                 if (err)
 320                         return err;
 321                 return 0;
 322         }
 323         return 0;
 324 }
 325 #endif
 326 static int sdhci_set_clock(struct mmc *mmc, unsigned int clock)
 327 {
 328         struct sdhci_host *host = mmc->priv;
 329         unsigned int div, clk = 0, timeout;
 330
 331         /* Wait max 20 ms */
 332         timeout = 200;
 333         while (sdhci_readl(host, SDHCI_PRESENT_STATE) &
 334                            (SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT)) {
 335                 if (timeout == 0) {
 336                         printf("%s: Timeout to wait cmd & data inhibit\n",
 337                                __func__);
 338                         return -EBUSY;
 339                 }
 340
 341                 timeout--;
 342                 udelay(100);
 343         }
 344
 345         sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
 346
 347         if (clock == 0)
 348                 return 0;
 349
 350         if (host->ops && host->ops->set_delay)
 351                 host->ops->set_delay(host);
 352
 353         if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) {
 354                 /*
 355                  * Check if the Host Controller supports Programmable Clock
 356                  * Mode.
 357                  */
 358                 if (host->clk_mul) {
 359                         for (div = 1; div <= 1024; div++) {
 360                                 if ((host->max_clk / div) <= clock)
 361                                         break;
 362                         }
 363
 364                         /*
 365                          * Set Programmable Clock Mode in the Clock
 366                          * Control register.
 367                          */
 368                         clk = SDHCI_PROG_CLOCK_MODE;
 369                         div--;
 370                 } else {
 371                         /* Version 3.00 divisors must be a multiple of 2. */
 372                         if (host->max_clk <= clock) {
 373                                 div = 1;
 374                         } else {
 375                                 for (div = 2;
 376                                      div < SDHCI_MAX_DIV_SPEC_300;
 377                                      div += 2) {
 378                                         if ((host->max_clk / div) <= clock)
 379                                                 break;
 380                                 }
 381                         }
 382                         div >>= 1;
 383                 }
 384         } else {
 385                 /* Version 2.00 divisors must be a power of 2. */
 386                 for (div = 1; div < SDHCI_MAX_DIV_SPEC_200; div *= 2) {
 387                         if ((host->max_clk / div) <= clock)
 388                                 break;
 389                 }
 390                 div >>= 1;
 391         }
 392
 393         if (host->ops && host->ops->set_clock)
 394                 host->ops->set_clock(host, div);
 395
 396         clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT;
 397         clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN)
 398                 << SDHCI_DIVIDER_HI_SHIFT;
 399         clk |= SDHCI_CLOCK_INT_EN;
 400         sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
 401
 402         /* Wait max 20 ms */
 403         timeout = 20;
 404         while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
 405                 & SDHCI_CLOCK_INT_STABLE)) {
 406                 if (timeout == 0) {
 407                         printf("%s: Internal clock never stabilised.\n",
 408                                __func__);
 409                         return -EBUSY;
 410                 }
 411                 timeout--;
 412                 udelay(1000);
 413         }
 414
 415         clk |= SDHCI_CLOCK_CARD_EN;
 416         sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
 417         return 0;
 418 }
 419
 420 static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
 421 {
 422         u8 pwr = 0;
 423
 424         if (power != (unsigned short)-1) {
 425                 switch (1 << power) {
 426                 case MMC_VDD_165_195:
 427                         pwr = SDHCI_POWER_180;
 428                         break;
 429                 case MMC_VDD_29_30:
 430                 case MMC_VDD_30_31:
 431                         pwr = SDHCI_POWER_300;
 432                         break;
 433                 case MMC_VDD_32_33:
 434                 case MMC_VDD_33_34:
 435                         pwr = SDHCI_POWER_330;
 436                         break;
 437                 }
 438         }
 439
 440         if (pwr == 0) {
 441                 sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
 442                 return;
 443         }
 444
 445         pwr |= SDHCI_POWER_ON;
 446
 447         sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
 448 }
 449
 450 #ifdef CONFIG_DM_MMC
 451 static int sdhci_set_ios(struct udevice *dev)
 452 {
 453         struct mmc *mmc = mmc_get_mmc_dev(dev);
 454 #else
 455 static int sdhci_set_ios(struct mmc *mmc)
 456 {
 457 #endif
 458         u32 ctrl;
 459         struct sdhci_host *host = mmc->priv;
 460
 461         if (host->ops && host->ops->set_control_reg)
 462                 host->ops->set_control_reg(host);
 463
 464         if (mmc->clock != host->clock)
 465                 sdhci_set_clock(mmc, mmc->clock);
 466
 467         if (mmc->clk_disable)
 468                 sdhci_set_clock(mmc, 0);
 469
 470         /* Set bus width */
 471         ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
 472         if (mmc->bus_width == 8) {
 473                 ctrl &= ~SDHCI_CTRL_4BITBUS;
 474                 if ((SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) ||
 475                                 (host->quirks & SDHCI_QUIRK_USE_WIDE8))
 476                         ctrl |= SDHCI_CTRL_8BITBUS;
 477         } else {
 478                 if ((SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) ||
 479                                 (host->quirks & SDHCI_QUIRK_USE_WIDE8))
 480                         ctrl &= ~SDHCI_CTRL_8BITBUS;
 481                 if (mmc->bus_width == 4)
 482                         ctrl |= SDHCI_CTRL_4BITBUS;
 483                 else
 484                         ctrl &= ~SDHCI_CTRL_4BITBUS;
 485         }
 486
 487         if (mmc->clock > 26000000)
 488                 ctrl |= SDHCI_CTRL_HISPD;
 489         else
 490                 ctrl &= ~SDHCI_CTRL_HISPD;
 491
 492         if ((host->quirks & SDHCI_QUIRK_NO_HISPD_BIT) ||
 493             (host->quirks & SDHCI_QUIRK_BROKEN_HISPD_MODE))
 494                 ctrl &= ~SDHCI_CTRL_HISPD;
 495
 496         sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
 497
 498         /* If available, call the driver specific "post" set_ios() function */
 499         if (host->ops && host->ops->set_ios_post)
 500                 host->ops->set_ios_post(host);
 501
 502         return 0;
 503 }
 504
 505 static int sdhci_init(struct mmc *mmc)
 506 {
 507         struct sdhci_host *host = mmc->priv;
 508
 509         sdhci_reset(host, SDHCI_RESET_ALL);
 510
 511         if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) && !aligned_buffer) {
 512                 aligned_buffer = memalign(8, 512*1024);
 513                 if (!aligned_buffer) {
 514                         printf("%s: Aligned buffer alloc failed!!!\n",
 515                                __func__);
 516                         return -ENOMEM;
 517                 }
 518         }
 519
 520         sdhci_set_power(host, fls(mmc->cfg->voltages) - 1);
 521
 522         if (host->ops && host->ops->get_cd)
 523                 host->ops->get_cd(host);
 524
 525         /* Enable only interrupts served by the SD controller */
 526         sdhci_writel(host, SDHCI_INT_DATA_MASK | SDHCI_INT_CMD_MASK,
 527                      SDHCI_INT_ENABLE);
 528         /* Mask all sdhci interrupt sources */
 529         sdhci_writel(host, 0x0, SDHCI_SIGNAL_ENABLE);
 530
 531         return 0;
 532 }
 533
 534 #ifdef CONFIG_DM_MMC
 535 int sdhci_probe(struct udevice *dev)
 536 {
 537         struct mmc *mmc = mmc_get_mmc_dev(dev);
 538
 539         return sdhci_init(mmc);
 540 }
 541
 542 const struct dm_mmc_ops sdhci_ops = {
 543         .send_cmd       = sdhci_send_command,
 544         .set_ios        = sdhci_set_ios,
 545 #ifdef MMC_SUPPORTS_TUNING
 546         .execute_tuning = sdhci_execute_tuning,
 547 #endif
 548 };
 549 #else
 550 static const struct mmc_ops sdhci_ops = {
 551         .send_cmd       = sdhci_send_command,
 552         .set_ios        = sdhci_set_ios,
 553         .init           = sdhci_init,
 554 };
 555 #endif
 556
 557 int sdhci_setup_cfg(struct mmc_config *cfg, struct sdhci_host *host,
 558                 u32 f_max, u32 f_min)
 559 {
 560         u32 caps, caps_1 = 0;
 561
 562         caps = sdhci_readl(host, SDHCI_CAPABILITIES);
 563
 564 #ifdef CONFIG_MMC_SDHCI_SDMA
 565         if (!(caps & SDHCI_CAN_DO_SDMA)) {
 566                 printf("%s: Your controller doesn't support SDMA!!\n",
 567                        __func__);
 568                 return -EINVAL;
 569         }
 570 #endif
 571         if (host->quirks & SDHCI_QUIRK_REG32_RW)
 572                 host->version =
 573                         sdhci_readl(host, SDHCI_HOST_VERSION - 2) >> 16;
 574         else
 575                 host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
 576
 577         cfg->name = host->name;
 578 #ifndef CONFIG_DM_MMC
 579         cfg->ops = &sdhci_ops;
 580 #endif
 581
 582         /* Check whether the clock multiplier is supported or not */
 583         if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) {
 584                 caps_1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);
 585                 host->clk_mul = (caps_1 & SDHCI_CLOCK_MUL_MASK) >>
 586                                 SDHCI_CLOCK_MUL_SHIFT;
 587         }
 588
 589         if (host->max_clk == 0) {
 590                 if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300)
 591                         host->max_clk = (caps & SDHCI_CLOCK_V3_BASE_MASK) >>
 592                                 SDHCI_CLOCK_BASE_SHIFT;
 593                 else
 594                         host->max_clk = (caps & SDHCI_CLOCK_BASE_MASK) >>
 595                                 SDHCI_CLOCK_BASE_SHIFT;
 596                 host->max_clk *= 1000000;
 597                 if (host->clk_mul)
 598                         host->max_clk *= host->clk_mul;
 599         }
 600         if (host->max_clk == 0) {
 601                 printf("%s: Hardware doesn't specify base clock frequency\n",
 602                        __func__);
 603                 return -EINVAL;
 604         }
 605         if (f_max && (f_max < host->max_clk))
 606                 cfg->f_max = f_max;
 607         else
 608                 cfg->f_max = host->max_clk;
 609         if (f_min)
 610                 cfg->f_min = f_min;
 611         else {
 612                 if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300)
 613                         cfg->f_min = cfg->f_max / SDHCI_MAX_DIV_SPEC_300;
 614                 else
 615                         cfg->f_min = cfg->f_max / SDHCI_MAX_DIV_SPEC_200;
 616         }
 617         cfg->voltages = 0;
 618         if (caps & SDHCI_CAN_VDD_330)
 619                 cfg->voltages |= MMC_VDD_32_33 | MMC_VDD_33_34;
 620         if (caps & SDHCI_CAN_VDD_300)
 621                 cfg->voltages |= MMC_VDD_29_30 | MMC_VDD_30_31;
 622         if (caps & SDHCI_CAN_VDD_180)
 623                 cfg->voltages |= MMC_VDD_165_195;
 624
 625         if (host->quirks & SDHCI_QUIRK_BROKEN_VOLTAGE)
 626                 cfg->voltages |= host->voltages;
 627
 628         cfg->host_caps |= MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_4BIT;
 629
 630         /* Since Host Controller Version3.0 */
 631         if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) {
 632                 if (!(caps & SDHCI_CAN_DO_8BIT))
 633                         cfg->host_caps &= ~MMC_MODE_8BIT;
 634         }
 635
 636         if (host->quirks & SDHCI_QUIRK_BROKEN_HISPD_MODE) {
 637                 cfg->host_caps &= ~MMC_MODE_HS;
 638                 cfg->host_caps &= ~MMC_MODE_HS_52MHz;
 639         }
 640
 641         if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300)
 642                 caps_1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);
 643
 644         if (!(cfg->voltages & MMC_VDD_165_195) ||
 645             (host->quirks & SDHCI_QUIRK_NO_1_8_V))
 646                 caps_1 &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |
 647                             SDHCI_SUPPORT_DDR50);
 648
 649         if (caps_1 & (SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |
 650                       SDHCI_SUPPORT_DDR50))
 651                 cfg->host_caps |= MMC_CAP(UHS_SDR12) | MMC_CAP(UHS_SDR25);
 652
 653         if (caps_1 & SDHCI_SUPPORT_SDR104) {
 654                 cfg->host_caps |= MMC_CAP(UHS_SDR104) | MMC_CAP(UHS_SDR50);
 655                 /*
 656                  * SD3.0: SDR104 is supported so (for eMMC) the caps2
 657                  * field can be promoted to support HS200.
 658                  */
 659                 cfg->host_caps |= MMC_CAP(MMC_HS_200);
 660         } else if (caps_1 & SDHCI_SUPPORT_SDR50) {
 661                 cfg->host_caps |= MMC_CAP(UHS_SDR50);
 662         }
 663
 664         if (caps_1 & SDHCI_SUPPORT_DDR50)
 665                 cfg->host_caps |= MMC_CAP(UHS_DDR50);
 666
 667         if (host->host_caps)
 668                 cfg->host_caps |= host->host_caps;
 669
 670         cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
 671
 672         return 0;
 673 }
 674
 675 #ifdef CONFIG_BLK
 676 int sdhci_bind(struct udevice *dev, struct mmc *mmc, struct mmc_config *cfg)
 677 {
 678         return mmc_bind(dev, mmc, cfg);
 679 }
 680 #else
 681 int add_sdhci(struct sdhci_host *host, u32 f_max, u32 f_min)
 682 {
 683         int ret;
 684
 685         ret = sdhci_setup_cfg(&host->cfg, host, f_max, f_min);
 686         if (ret)
 687                 return ret;
 688
 689         host->mmc = mmc_create(&host->cfg, host);
 690         if (host->mmc == NULL) {
 691                 printf("%s: mmc create fail!\n", __func__);
 692                 return -ENOMEM;
 693         }
 694
 695         return 0;
 696 }
 697 #endif