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