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)
  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);
  57 }
  58
  59 int mmc_wait_dat0(struct mmc *mmc, int state, int timeout)
  60 {
  61         return dm_mmc_wait_dat0(mmc->dev, state, timeout);
  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 mmc_of_parse(struct udevice *dev, struct mmc_config *cfg)
 126 {
 127         int val;
 128
 129         val = dev_read_u32_default(dev, "bus-width", 1);
 130
 131         switch (val) {
 132         case 0x8:
 133                 cfg->host_caps |= MMC_MODE_8BIT;
 134                 /* fall through */
 135         case 0x4:
 136                 cfg->host_caps |= MMC_MODE_4BIT;
 137                 /* fall through */
 138         case 0x1:
 139                 cfg->host_caps |= MMC_MODE_1BIT;
 140                 break;
 141         default:
 142                 dev_err(dev, "Invalid \"bus-width\" value %u!\n", val);
 143                 return -EINVAL;
 144         }
 145
 146         /* f_max is obtained from the optional "max-frequency" property */
 147         dev_read_u32(dev, "max-frequency", &cfg->f_max);
 148
 149         if (dev_read_bool(dev, "cap-sd-highspeed"))
 150                 cfg->host_caps |= MMC_CAP(SD_HS);
 151         if (dev_read_bool(dev, "cap-mmc-highspeed"))
 152                 cfg->host_caps |= MMC_CAP(MMC_HS);
 153         if (dev_read_bool(dev, "sd-uhs-sdr12"))
 154                 cfg->host_caps |= MMC_CAP(UHS_SDR12);
 155         if (dev_read_bool(dev, "sd-uhs-sdr25"))
 156                 cfg->host_caps |= MMC_CAP(UHS_SDR25);
 157         if (dev_read_bool(dev, "sd-uhs-sdr50"))
 158                 cfg->host_caps |= MMC_CAP(UHS_SDR50);
 159         if (dev_read_bool(dev, "sd-uhs-sdr104"))
 160                 cfg->host_caps |= MMC_CAP(UHS_SDR104);
 161         if (dev_read_bool(dev, "sd-uhs-ddr50"))
 162                 cfg->host_caps |= MMC_CAP(UHS_DDR50);
 163         if (dev_read_bool(dev, "mmc-ddr-1_8v"))
 164                 cfg->host_caps |= MMC_CAP(MMC_DDR_52);
 165         if (dev_read_bool(dev, "mmc-ddr-1_2v"))
 166                 cfg->host_caps |= MMC_CAP(MMC_DDR_52);
 167         if (dev_read_bool(dev, "mmc-hs200-1_8v"))
 168                 cfg->host_caps |= MMC_CAP(MMC_HS_200);
 169         if (dev_read_bool(dev, "mmc-hs200-1_2v"))
 170                 cfg->host_caps |= MMC_CAP(MMC_HS_200);
 171         if (dev_read_bool(dev, "mmc-hs400-1_8v"))
 172                 cfg->host_caps |= MMC_CAP(MMC_HS_400);
 173         if (dev_read_bool(dev, "mmc-hs400-1_2v"))
 174                 cfg->host_caps |= MMC_CAP(MMC_HS_400);
 175
 176         if (dev_read_bool(dev, "non-removable")) {
 177                 cfg->host_caps |= MMC_CAP_NONREMOVABLE;
 178         } else {
 179                 if (dev_read_bool(dev, "cd-inverted"))
 180                         cfg->host_caps |= MMC_CAP_CD_ACTIVE_HIGH;
 181                 if (dev_read_bool(dev, "broken-cd"))
 182                         cfg->host_caps |= MMC_CAP_NEEDS_POLL;
 183         }
 184
 185         return 0;
 186 }
 187
 188 struct mmc *mmc_get_mmc_dev(struct udevice *dev)
 189 {
 190         struct mmc_uclass_priv *upriv;
 191
 192         if (!device_active(dev))
 193                 return NULL;
 194         upriv = dev_get_uclass_priv(dev);
 195         return upriv->mmc;
 196 }
 197
 198 #if CONFIG_IS_ENABLED(BLK)
 199 struct mmc *find_mmc_device(int dev_num)
 200 {
 201         struct udevice *dev, *mmc_dev;
 202         int ret;
 203
 204         ret = blk_find_device(IF_TYPE_MMC, dev_num, &dev);
 205
 206         if (ret) {
 207 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 208                 printf("MMC Device %d not found\n", dev_num);
 209 #endif
 210                 return NULL;
 211         }
 212
 213         mmc_dev = dev_get_parent(dev);
 214
 215         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 216
 217         return mmc;
 218 }
 219
 220 int get_mmc_num(void)
 221 {
 222         return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0);
 223 }
 224
 225 int mmc_get_next_devnum(void)
 226 {
 227         return blk_find_max_devnum(IF_TYPE_MMC);
 228 }
 229
 230 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
 231 {
 232         struct blk_desc *desc;
 233         struct udevice *dev;
 234
 235         device_find_first_child(mmc->dev, &dev);
 236         if (!dev)
 237                 return NULL;
 238         desc = dev_get_uclass_platdata(dev);
 239
 240         return desc;
 241 }
 242
 243 void mmc_do_preinit(void)
 244 {
 245         struct udevice *dev;
 246         struct uclass *uc;
 247         int ret;
 248
 249         ret = uclass_get(UCLASS_MMC, &uc);
 250         if (ret)
 251                 return;
 252         uclass_foreach_dev(dev, uc) {
 253                 struct mmc *m = mmc_get_mmc_dev(dev);
 254
 255                 if (!m)
 256                         continue;
 257 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
 258                 mmc_set_preinit(m, 1);
 259 #endif
 260                 if (m->preinit)
 261                         mmc_start_init(m);
 262         }
 263 }
 264
 265 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 266 void print_mmc_devices(char separator)
 267 {
 268         struct udevice *dev;
 269         char *mmc_type;
 270         bool first = true;
 271
 272         for (uclass_first_device(UCLASS_MMC, &dev);
 273              dev;
 274              uclass_next_device(&dev), first = false) {
 275                 struct mmc *m = mmc_get_mmc_dev(dev);
 276
 277                 if (!first) {
 278                         printf("%c", separator);
 279                         if (separator != '\n')
 280                                 puts(" ");
 281                 }
 282                 if (m->has_init)
 283                         mmc_type = IS_SD(m) ? "SD" : "eMMC";
 284                 else
 285                         mmc_type = NULL;
 286
 287                 printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum);
 288                 if (mmc_type)
 289                         printf(" (%s)", mmc_type);
 290         }
 291
 292         printf("\n");
 293 }
 294
 295 #else
 296 void print_mmc_devices(char separator) { }
 297 #endif
 298
 299 int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg)
 300 {
 301         struct blk_desc *bdesc;
 302         struct udevice *bdev;
 303         int ret, devnum = -1;
 304
 305         if (!mmc_get_ops(dev))
 306                 return -ENOSYS;
 307 #ifndef CONFIG_SPL_BUILD
 308         /* Use the fixed index with aliase node's index */
 309         ret = dev_read_alias_seq(dev, &devnum);
 310         debug("%s: alias ret=%d, devnum=%d\n", __func__, ret, devnum);
 311 #endif
 312
 313         ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC,
 314                         devnum, 512, 0, &bdev);
 315         if (ret) {
 316                 debug("Cannot create block device\n");
 317                 return ret;
 318         }
 319         bdesc = dev_get_uclass_platdata(bdev);
 320         mmc->cfg = cfg;
 321         mmc->priv = dev;
 322
 323         /* the following chunk was from mmc_register() */
 324
 325         /* Setup dsr related values */
 326         mmc->dsr_imp = 0;
 327         mmc->dsr = 0xffffffff;
 328         /* Setup the universal parts of the block interface just once */
 329         bdesc->removable = 1;
 330
 331         /* setup initial part type */
 332         bdesc->part_type = cfg->part_type;
 333         mmc->dev = dev;
 334
 335         return 0;
 336 }
 337
 338 int mmc_unbind(struct udevice *dev)
 339 {
 340         struct udevice *bdev;
 341
 342         device_find_first_child(dev, &bdev);
 343         if (bdev) {
 344                 device_remove(bdev, DM_REMOVE_NORMAL);
 345                 device_unbind(bdev);
 346         }
 347
 348         return 0;
 349 }
 350
 351 static int mmc_select_hwpart(struct udevice *bdev, int hwpart)
 352 {
 353         struct udevice *mmc_dev = dev_get_parent(bdev);
 354         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 355         struct blk_desc *desc = dev_get_uclass_platdata(bdev);
 356
 357         if (desc->hwpart == hwpart)
 358                 return 0;
 359
 360         if (mmc->part_config == MMCPART_NOAVAILABLE)
 361                 return -EMEDIUMTYPE;
 362
 363         return mmc_switch_part(mmc, hwpart);
 364 }
 365
 366 static int mmc_blk_probe(struct udevice *dev)
 367 {
 368         struct udevice *mmc_dev = dev_get_parent(dev);
 369         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
 370         struct mmc *mmc = upriv->mmc;
 371         int ret;
 372
 373         ret = mmc_init(mmc);
 374         if (ret) {
 375                 debug("%s: mmc_init() failed (err=%d)\n", __func__, ret);
 376                 return ret;
 377         }
 378
 379         return 0;
 380 }
 381
 382 #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) || \
 383     CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) || \
 384     CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
 385 static int mmc_blk_remove(struct udevice *dev)
 386 {
 387         struct udevice *mmc_dev = dev_get_parent(dev);
 388         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
 389         struct mmc *mmc = upriv->mmc;
 390
 391         return mmc_deinit(mmc);
 392 }
 393 #endif
 394
 395 static const struct blk_ops mmc_blk_ops = {
 396         .read   = mmc_bread,
 397 #if CONFIG_IS_ENABLED(MMC_WRITE)
 398         .write  = mmc_bwrite,
 399         .erase  = mmc_berase,
 400 #endif
 401         .select_hwpart  = mmc_select_hwpart,
 402 };
 403
 404 U_BOOT_DRIVER(mmc_blk) = {
 405         .name           = "mmc_blk",
 406         .id             = UCLASS_BLK,
 407         .ops            = &mmc_blk_ops,
 408         .probe          = mmc_blk_probe,
 409 #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) || \
 410     CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) || \
 411     CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
 412         .remove         = mmc_blk_remove,
 413         .flags          = DM_FLAG_OS_PREPARE,
 414 #endif
 415 };
 416 #endif /* CONFIG_BLK */
 417
 418 U_BOOT_DRIVER(mmc) = {
 419         .name   = "mmc",
 420         .id     = UCLASS_MMC,
 421 };
 422
 423 UCLASS_DRIVER(mmc) = {
 424         .id             = UCLASS_MMC,
 425         .name           = "mmc",
 426         .flags          = DM_UC_FLAG_SEQ_ALIAS,
 427         .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv),
 428 };