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