drivers/mmc/mmc-uclass.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2015 Google, Inc
   4  * Written by Simon Glass <sjg@chromium.org>
   5  */
   6
   7 #include <common.h>
   8 #include <mmc.h>
   9 #include <dm.h>
  10 #include <dm/device-internal.h>
  11 #include <dm/device_compat.h>
  12 #include <dm/lists.h>
  13 #include <linux/compat.h>
  14 #include "mmc_private.h"
  15
  16 int dm_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
  17                     struct mmc_data *data)
  18 {
  19         struct mmc *mmc = mmc_get_mmc_dev(dev);
  20         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  21         int ret;
  22
  23         mmmc_trace_before_send(mmc, cmd);
  24         if (ops->send_cmd)
  25                 ret = ops->send_cmd(dev, cmd, data);
  26         else
  27                 ret = -ENOSYS;
  28         mmmc_trace_after_send(mmc, cmd, ret);
  29
  30         return ret;
  31 }
  32
  33 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
  34 {
  35         return dm_mmc_send_cmd(mmc->dev, cmd, data);
  36 }
  37
  38 int dm_mmc_set_ios(struct udevice *dev)
  39 {
  40         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  41
  42         if (!ops->set_ios)
  43                 return -ENOSYS;
  44         return ops->set_ios(dev);
  45 }
  46
  47 int mmc_set_ios(struct mmc *mmc)
  48 {
  49         return dm_mmc_set_ios(mmc->dev);
  50 }
  51
  52 int dm_mmc_wait_dat0(struct udevice *dev, int state, int timeout_us)
  53 {
  54         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  55
  56         if (!ops->wait_dat0)
  57                 return -ENOSYS;
  58         return ops->wait_dat0(dev, state, timeout_us);
  59 }
  60
  61 int mmc_wait_dat0(struct mmc *mmc, int state, int timeout_us)
  62 {
  63         return dm_mmc_wait_dat0(mmc->dev, state, timeout_us);
  64 }
  65
  66 int dm_mmc_get_wp(struct udevice *dev)
  67 {
  68         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  69
  70         if (!ops->get_wp)
  71                 return -ENOSYS;
  72         return ops->get_wp(dev);
  73 }
  74
  75 int mmc_getwp(struct mmc *mmc)
  76 {
  77         return dm_mmc_get_wp(mmc->dev);
  78 }
  79
  80 int dm_mmc_get_cd(struct udevice *dev)
  81 {
  82         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  83
  84         if (!ops->get_cd)
  85                 return -ENOSYS;
  86         return ops->get_cd(dev);
  87 }
  88
  89 int mmc_getcd(struct mmc *mmc)
  90 {
  91         return dm_mmc_get_cd(mmc->dev);
  92 }
  93
  94 #ifdef MMC_SUPPORTS_TUNING
  95 int dm_mmc_execute_tuning(struct udevice *dev, uint opcode)
  96 {
  97         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  98
  99         if (!ops->execute_tuning)
 100                 return -ENOSYS;
 101         return ops->execute_tuning(dev, opcode);
 102 }
 103
 104 int mmc_execute_tuning(struct mmc *mmc, uint opcode)
 105 {
 106         return dm_mmc_execute_tuning(mmc->dev, opcode);
 107 }
 108 #endif
 109
 110 #if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT)
 111 int dm_mmc_set_enhanced_strobe(struct udevice *dev)
 112 {
 113         struct dm_mmc_ops *ops = mmc_get_ops(dev);
 114
 115         if (ops->set_enhanced_strobe)
 116                 return ops->set_enhanced_strobe(dev);
 117
 118         return -ENOTSUPP;
 119 }
 120
 121 int mmc_set_enhanced_strobe(struct mmc *mmc)
 122 {
 123         return dm_mmc_set_enhanced_strobe(mmc->dev);
 124 }
 125 #endif
 126
 127 int dm_mmc_host_power_cycle(struct udevice *dev)
 128 {
 129         struct dm_mmc_ops *ops = mmc_get_ops(dev);
 130
 131         if (ops->host_power_cycle)
 132                 return ops->host_power_cycle(dev);
 133         return 0;
 134 }
 135
 136 int mmc_host_power_cycle(struct mmc *mmc)
 137 {
 138         return dm_mmc_host_power_cycle(mmc->dev);
 139 }
 140
 141 int dm_mmc_deferred_probe(struct udevice *dev)
 142 {
 143         struct dm_mmc_ops *ops = mmc_get_ops(dev);
 144
 145         if (ops->deferred_probe)
 146                 return ops->deferred_probe(dev);
 147
 148         return 0;
 149 }
 150
 151 int mmc_deferred_probe(struct mmc *mmc)
 152 {
 153         return dm_mmc_deferred_probe(mmc->dev);
 154 }
 155
 156 int mmc_of_parse(struct udevice *dev, struct mmc_config *cfg)
 157 {
 158         int val;
 159
 160         val = dev_read_u32_default(dev, "bus-width", 1);
 161
 162         switch (val) {
 163         case 0x8:
 164                 cfg->host_caps |= MMC_MODE_8BIT;
 165                 /* fall through */
 166         case 0x4:
 167                 cfg->host_caps |= MMC_MODE_4BIT;
 168                 /* fall through */
 169         case 0x1:
 170                 cfg->host_caps |= MMC_MODE_1BIT;
 171                 break;
 172         default:
 173                 dev_err(dev, "Invalid \"bus-width\" value %u!\n", val);
 174                 return -EINVAL;
 175         }
 176
 177         /* f_max is obtained from the optional "max-frequency" property */
 178         dev_read_u32(dev, "max-frequency", &cfg->f_max);
 179
 180         if (dev_read_bool(dev, "cap-sd-highspeed"))
 181                 cfg->host_caps |= MMC_CAP(SD_HS);
 182         if (dev_read_bool(dev, "cap-mmc-highspeed"))
 183                 cfg->host_caps |= MMC_CAP(MMC_HS);
 184         if (dev_read_bool(dev, "sd-uhs-sdr12"))
 185                 cfg->host_caps |= MMC_CAP(UHS_SDR12);
 186         if (dev_read_bool(dev, "sd-uhs-sdr25"))
 187                 cfg->host_caps |= MMC_CAP(UHS_SDR25);
 188         if (dev_read_bool(dev, "sd-uhs-sdr50"))
 189                 cfg->host_caps |= MMC_CAP(UHS_SDR50);
 190         if (dev_read_bool(dev, "sd-uhs-sdr104"))
 191                 cfg->host_caps |= MMC_CAP(UHS_SDR104);
 192         if (dev_read_bool(dev, "sd-uhs-ddr50"))
 193                 cfg->host_caps |= MMC_CAP(UHS_DDR50);
 194         if (dev_read_bool(dev, "mmc-ddr-1_8v"))
 195                 cfg->host_caps |= MMC_CAP(MMC_DDR_52);
 196         if (dev_read_bool(dev, "mmc-ddr-1_2v"))
 197                 cfg->host_caps |= MMC_CAP(MMC_DDR_52);
 198         if (dev_read_bool(dev, "mmc-hs200-1_8v"))
 199                 cfg->host_caps |= MMC_CAP(MMC_HS_200);
 200         if (dev_read_bool(dev, "mmc-hs200-1_2v"))
 201                 cfg->host_caps |= MMC_CAP(MMC_HS_200);
 202         if (dev_read_bool(dev, "mmc-hs400-1_8v"))
 203                 cfg->host_caps |= MMC_CAP(MMC_HS_400);
 204         if (dev_read_bool(dev, "mmc-hs400-1_2v"))
 205                 cfg->host_caps |= MMC_CAP(MMC_HS_400);
 206         if (dev_read_bool(dev, "mmc-hs400-enhanced-strobe"))
 207                 cfg->host_caps |= MMC_CAP(MMC_HS_400_ES);
 208
 209         if (dev_read_bool(dev, "non-removable")) {
 210                 cfg->host_caps |= MMC_CAP_NONREMOVABLE;
 211         } else {
 212                 if (dev_read_bool(dev, "cd-inverted"))
 213                         cfg->host_caps |= MMC_CAP_CD_ACTIVE_HIGH;
 214                 if (dev_read_bool(dev, "broken-cd"))
 215                         cfg->host_caps |= MMC_CAP_NEEDS_POLL;
 216         }
 217
 218         if (dev_read_bool(dev, "no-1-8-v")) {
 219                 cfg->host_caps &= ~(UHS_CAPS | MMC_MODE_HS200 |
 220                                     MMC_MODE_HS400 | MMC_MODE_HS400_ES);
 221         }
 222
 223         return 0;
 224 }
 225
 226 struct mmc *mmc_get_mmc_dev(struct udevice *dev)
 227 {
 228         struct mmc_uclass_priv *upriv;
 229
 230         if (!device_active(dev))
 231                 return NULL;
 232         upriv = dev_get_uclass_priv(dev);
 233         return upriv->mmc;
 234 }
 235
 236 #if CONFIG_IS_ENABLED(BLK)
 237 struct mmc *find_mmc_device(int dev_num)
 238 {
 239         struct udevice *dev, *mmc_dev;
 240         int ret;
 241
 242         ret = blk_find_device(IF_TYPE_MMC, dev_num, &dev);
 243
 244         if (ret) {
 245 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 246                 printf("MMC Device %d not found\n", dev_num);
 247 #endif
 248                 return NULL;
 249         }
 250
 251         mmc_dev = dev_get_parent(dev);
 252
 253         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 254
 255         return mmc;
 256 }
 257
 258 int get_mmc_num(void)
 259 {
 260         return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0);
 261 }
 262
 263 int mmc_get_next_devnum(void)
 264 {
 265         return blk_find_max_devnum(IF_TYPE_MMC);
 266 }
 267
 268 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
 269 {
 270         struct blk_desc *desc;
 271         struct udevice *dev;
 272
 273         device_find_first_child(mmc->dev, &dev);
 274         if (!dev)
 275                 return NULL;
 276         desc = dev_get_uclass_platdata(dev);
 277
 278         return desc;
 279 }
 280
 281 void mmc_do_preinit(void)
 282 {
 283         struct udevice *dev;
 284         struct uclass *uc;
 285         int ret;
 286
 287         ret = uclass_get(UCLASS_MMC, &uc);
 288         if (ret)
 289                 return;
 290         uclass_foreach_dev(dev, uc) {
 291                 struct mmc *m = mmc_get_mmc_dev(dev);
 292
 293                 if (!m)
 294                         continue;
 295 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
 296                 mmc_set_preinit(m, 1);
 297 #endif
 298                 if (m->preinit)
 299                         mmc_start_init(m);
 300         }
 301 }
 302
 303 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 304 void print_mmc_devices(char separator)
 305 {
 306         struct udevice *dev;
 307         char *mmc_type;
 308         bool first = true;
 309
 310         for (uclass_first_device(UCLASS_MMC, &dev);
 311              dev;
 312              uclass_next_device(&dev), first = false) {
 313                 struct mmc *m = mmc_get_mmc_dev(dev);
 314
 315                 if (!first) {
 316                         printf("%c", separator);
 317                         if (separator != '\n')
 318                                 puts(" ");
 319                 }
 320                 if (m->has_init)
 321                         mmc_type = IS_SD(m) ? "SD" : "eMMC";
 322                 else
 323                         mmc_type = NULL;
 324
 325                 printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum);
 326                 if (mmc_type)
 327                         printf(" (%s)", mmc_type);
 328         }
 329
 330         printf("\n");
 331 }
 332
 333 #else
 334 void print_mmc_devices(char separator) { }
 335 #endif
 336
 337 int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg)
 338 {
 339         struct blk_desc *bdesc;
 340         struct udevice *bdev;
 341         int ret, devnum = -1;
 342
 343         if (!mmc_get_ops(dev))
 344                 return -ENOSYS;
 345 #ifndef CONFIG_SPL_BUILD
 346         /* Use the fixed index with aliase node's index */
 347         ret = dev_read_alias_seq(dev, &devnum);
 348         debug("%s: alias ret=%d, devnum=%d\n", __func__, ret, devnum);
 349 #endif
 350
 351         ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC,
 352                         devnum, 512, 0, &bdev);
 353         if (ret) {
 354                 debug("Cannot create block device\n");
 355                 return ret;
 356         }
 357         bdesc = dev_get_uclass_platdata(bdev);
 358         mmc->cfg = cfg;
 359         mmc->priv = dev;
 360
 361         /* the following chunk was from mmc_register() */
 362
 363         /* Setup dsr related values */
 364         mmc->dsr_imp = 0;
 365         mmc->dsr = 0xffffffff;
 366         /* Setup the universal parts of the block interface just once */
 367         bdesc->removable = 1;
 368
 369         /* setup initial part type */
 370         bdesc->part_type = cfg->part_type;
 371         mmc->dev = dev;
 372
 373         return 0;
 374 }
 375
 376 int mmc_unbind(struct udevice *dev)
 377 {
 378         struct udevice *bdev;
 379
 380         device_find_first_child(dev, &bdev);
 381         if (bdev) {
 382                 device_remove(bdev, DM_REMOVE_NORMAL);
 383                 device_unbind(bdev);
 384         }
 385
 386         return 0;
 387 }
 388
 389 static int mmc_select_hwpart(struct udevice *bdev, int hwpart)
 390 {
 391         struct udevice *mmc_dev = dev_get_parent(bdev);
 392         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 393         struct blk_desc *desc = dev_get_uclass_platdata(bdev);
 394         int ret;
 395
 396         if (desc->hwpart == hwpart)
 397                 return 0;
 398
 399         if (mmc->part_config == MMCPART_NOAVAILABLE)
 400                 return -EMEDIUMTYPE;
 401
 402         ret = mmc_switch_part(mmc, hwpart);
 403         if (!ret)
 404                 blkcache_invalidate(desc->if_type, desc->devnum);
 405
 406         return ret;
 407 }
 408
 409 static int mmc_blk_probe(struct udevice *dev)
 410 {
 411         struct udevice *mmc_dev = dev_get_parent(dev);
 412         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
 413         struct mmc *mmc = upriv->mmc;
 414         int ret;
 415
 416         ret = mmc_init(mmc);
 417         if (ret) {
 418                 debug("%s: mmc_init() failed (err=%d)\n", __func__, ret);
 419                 return ret;
 420         }
 421
 422         return 0;
 423 }
 424
 425 #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) || \
 426     CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) || \
 427     CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
 428 static int mmc_blk_remove(struct udevice *dev)
 429 {
 430         struct udevice *mmc_dev = dev_get_parent(dev);
 431         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
 432         struct mmc *mmc = upriv->mmc;
 433
 434         return mmc_deinit(mmc);
 435 }
 436 #endif
 437
 438 static const struct blk_ops mmc_blk_ops = {
 439         .read   = mmc_bread,
 440 #if CONFIG_IS_ENABLED(MMC_WRITE)
 441         .write  = mmc_bwrite,
 442         .erase  = mmc_berase,
 443 #endif
 444         .select_hwpart  = mmc_select_hwpart,
 445 };
 446
 447 U_BOOT_DRIVER(mmc_blk) = {
 448         .name           = "mmc_blk",
 449         .id             = UCLASS_BLK,
 450         .ops            = &mmc_blk_ops,
 451         .probe          = mmc_blk_probe,
 452 #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) || \
 453     CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) || \
 454     CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
 455         .remove         = mmc_blk_remove,
 456         .flags          = DM_FLAG_OS_PREPARE,
 457 #endif
 458 };
 459 #endif /* CONFIG_BLK */
 460
 461
 462 UCLASS_DRIVER(mmc) = {
 463         .id             = UCLASS_MMC,
 464         .name           = "mmc",
 465         .flags          = DM_UC_FLAG_SEQ_ALIAS,
 466         .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv),
 467 };