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