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         if (dev_read_bool(dev, "mmc-hs400-enhanced-strobe"))
 176                 cfg->host_caps |= MMC_CAP(MMC_HS_400_ES);
 177
 178         if (dev_read_bool(dev, "non-removable")) {
 179                 cfg->host_caps |= MMC_CAP_NONREMOVABLE;
 180         } else {
 181                 if (dev_read_bool(dev, "cd-inverted"))
 182                         cfg->host_caps |= MMC_CAP_CD_ACTIVE_HIGH;
 183                 if (dev_read_bool(dev, "broken-cd"))
 184                         cfg->host_caps |= MMC_CAP_NEEDS_POLL;
 185         }
 186
 187         if (dev_read_bool(dev, "no-1-8-v")) {
 188                 cfg->host_caps &= ~(UHS_CAPS | MMC_MODE_HS200 |
 189                                     MMC_MODE_HS400 | MMC_MODE_HS400_ES);
 190         }
 191
 192         return 0;
 193 }
 194
 195 struct mmc *mmc_get_mmc_dev(struct udevice *dev)
 196 {
 197         struct mmc_uclass_priv *upriv;
 198
 199         if (!device_active(dev))
 200                 return NULL;
 201         upriv = dev_get_uclass_priv(dev);
 202         return upriv->mmc;
 203 }
 204
 205 #if CONFIG_IS_ENABLED(BLK)
 206 struct mmc *find_mmc_device(int dev_num)
 207 {
 208         struct udevice *dev, *mmc_dev;
 209         int ret;
 210
 211         ret = blk_find_device(IF_TYPE_MMC, dev_num, &dev);
 212
 213         if (ret) {
 214 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 215                 printf("MMC Device %d not found\n", dev_num);
 216 #endif
 217                 return NULL;
 218         }
 219
 220         mmc_dev = dev_get_parent(dev);
 221
 222         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 223
 224         return mmc;
 225 }
 226
 227 int get_mmc_num(void)
 228 {
 229         return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0);
 230 }
 231
 232 int mmc_get_next_devnum(void)
 233 {
 234         return blk_find_max_devnum(IF_TYPE_MMC);
 235 }
 236
 237 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
 238 {
 239         struct blk_desc *desc;
 240         struct udevice *dev;
 241
 242         device_find_first_child(mmc->dev, &dev);
 243         if (!dev)
 244                 return NULL;
 245         desc = dev_get_uclass_platdata(dev);
 246
 247         return desc;
 248 }
 249
 250 void mmc_do_preinit(void)
 251 {
 252         struct udevice *dev;
 253         struct uclass *uc;
 254         int ret;
 255
 256         ret = uclass_get(UCLASS_MMC, &uc);
 257         if (ret)
 258                 return;
 259         uclass_foreach_dev(dev, uc) {
 260                 struct mmc *m = mmc_get_mmc_dev(dev);
 261
 262                 if (!m)
 263                         continue;
 264 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
 265                 mmc_set_preinit(m, 1);
 266 #endif
 267                 if (m->preinit)
 268                         mmc_start_init(m);
 269         }
 270 }
 271
 272 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 273 void print_mmc_devices(char separator)
 274 {
 275         struct udevice *dev;
 276         char *mmc_type;
 277         bool first = true;
 278
 279         for (uclass_first_device(UCLASS_MMC, &dev);
 280              dev;
 281              uclass_next_device(&dev), first = false) {
 282                 struct mmc *m = mmc_get_mmc_dev(dev);
 283
 284                 if (!first) {
 285                         printf("%c", separator);
 286                         if (separator != '\n')
 287                                 puts(" ");
 288                 }
 289                 if (m->has_init)
 290                         mmc_type = IS_SD(m) ? "SD" : "eMMC";
 291                 else
 292                         mmc_type = NULL;
 293
 294                 printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum);
 295                 if (mmc_type)
 296                         printf(" (%s)", mmc_type);
 297         }
 298
 299         printf("\n");
 300 }
 301
 302 #else
 303 void print_mmc_devices(char separator) { }
 304 #endif
 305
 306 int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg)
 307 {
 308         struct blk_desc *bdesc;
 309         struct udevice *bdev;
 310         int ret, devnum = -1;
 311
 312         if (!mmc_get_ops(dev))
 313                 return -ENOSYS;
 314 #ifndef CONFIG_SPL_BUILD
 315         /* Use the fixed index with aliase node's index */
 316         ret = dev_read_alias_seq(dev, &devnum);
 317         debug("%s: alias ret=%d, devnum=%d\n", __func__, ret, devnum);
 318 #endif
 319
 320         ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC,
 321                         devnum, 512, 0, &bdev);
 322         if (ret) {
 323                 debug("Cannot create block device\n");
 324                 return ret;
 325         }
 326         bdesc = dev_get_uclass_platdata(bdev);
 327         mmc->cfg = cfg;
 328         mmc->priv = dev;
 329
 330         /* the following chunk was from mmc_register() */
 331
 332         /* Setup dsr related values */
 333         mmc->dsr_imp = 0;
 334         mmc->dsr = 0xffffffff;
 335         /* Setup the universal parts of the block interface just once */
 336         bdesc->removable = 1;
 337
 338         /* setup initial part type */
 339         bdesc->part_type = cfg->part_type;
 340         mmc->dev = dev;
 341
 342         return 0;
 343 }
 344
 345 int mmc_unbind(struct udevice *dev)
 346 {
 347         struct udevice *bdev;
 348
 349         device_find_first_child(dev, &bdev);
 350         if (bdev) {
 351                 device_remove(bdev, DM_REMOVE_NORMAL);
 352                 device_unbind(bdev);
 353         }
 354
 355         return 0;
 356 }
 357
 358 static int mmc_select_hwpart(struct udevice *bdev, int hwpart)
 359 {
 360         struct udevice *mmc_dev = dev_get_parent(bdev);
 361         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 362         struct blk_desc *desc = dev_get_uclass_platdata(bdev);
 363
 364         if (desc->hwpart == hwpart)
 365                 return 0;
 366
 367         if (mmc->part_config == MMCPART_NOAVAILABLE)
 368                 return -EMEDIUMTYPE;
 369
 370         return mmc_switch_part(mmc, hwpart);
 371 }
 372
 373 static int mmc_blk_probe(struct udevice *dev)
 374 {
 375         struct udevice *mmc_dev = dev_get_parent(dev);
 376         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
 377         struct mmc *mmc = upriv->mmc;
 378         int ret;
 379
 380         ret = mmc_init(mmc);
 381         if (ret) {
 382                 debug("%s: mmc_init() failed (err=%d)\n", __func__, ret);
 383                 return ret;
 384         }
 385
 386         return 0;
 387 }
 388
 389 #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) || \
 390     CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) || \
 391     CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
 392 static int mmc_blk_remove(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
 398         return mmc_deinit(mmc);
 399 }
 400 #endif
 401
 402 static const struct blk_ops mmc_blk_ops = {
 403         .read   = mmc_bread,
 404 #if CONFIG_IS_ENABLED(MMC_WRITE)
 405         .write  = mmc_bwrite,
 406         .erase  = mmc_berase,
 407 #endif
 408         .select_hwpart  = mmc_select_hwpart,
 409 };
 410
 411 U_BOOT_DRIVER(mmc_blk) = {
 412         .name           = "mmc_blk",
 413         .id             = UCLASS_BLK,
 414         .ops            = &mmc_blk_ops,
 415         .probe          = mmc_blk_probe,
 416 #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) || \
 417     CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) || \
 418     CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
 419         .remove         = mmc_blk_remove,
 420         .flags          = DM_FLAG_OS_PREPARE,
 421 #endif
 422 };
 423 #endif /* CONFIG_BLK */
 424
 425 U_BOOT_DRIVER(mmc) = {
 426         .name   = "mmc",
 427         .id     = UCLASS_MMC,
 428 };
 429
 430 UCLASS_DRIVER(mmc) = {
 431         .id             = UCLASS_MMC,
 432         .name           = "mmc",
 433         .flags          = DM_UC_FLAG_SEQ_ALIAS,
 434         .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv),
 435 };