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/device_compat.h>
  12 #include <dm/lists.h>
  13 #include <linux/compat.h>
  14 #include "mmc_private.h"
  15
  16 int dm_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
  17                     struct mmc_data *data)
  18 {
  19         struct mmc *mmc = mmc_get_mmc_dev(dev);
  20         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  21         int ret;
  22
  23         mmmc_trace_before_send(mmc, cmd);
  24         if (ops->send_cmd)
  25                 ret = ops->send_cmd(dev, cmd, data);
  26         else
  27                 ret = -ENOSYS;
  28         mmmc_trace_after_send(mmc, cmd, ret);
  29
  30         return ret;
  31 }
  32
  33 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
  34 {
  35         return dm_mmc_send_cmd(mmc->dev, cmd, data);
  36 }
  37
  38 int dm_mmc_set_ios(struct udevice *dev)
  39 {
  40         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  41
  42         if (!ops->set_ios)
  43                 return -ENOSYS;
  44         return ops->set_ios(dev);
  45 }
  46
  47 int mmc_set_ios(struct mmc *mmc)
  48 {
  49         return dm_mmc_set_ios(mmc->dev);
  50 }
  51
  52 int dm_mmc_wait_dat0(struct udevice *dev, int state, int timeout_us)
  53 {
  54         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  55
  56         if (!ops->wait_dat0)
  57                 return -ENOSYS;
  58         return ops->wait_dat0(dev, state, timeout_us);
  59 }
  60
  61 int mmc_wait_dat0(struct mmc *mmc, int state, int timeout_us)
  62 {
  63         return dm_mmc_wait_dat0(mmc->dev, state, timeout_us);
  64 }
  65
  66 int dm_mmc_get_wp(struct udevice *dev)
  67 {
  68         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  69
  70         if (!ops->get_wp)
  71                 return -ENOSYS;
  72         return ops->get_wp(dev);
  73 }
  74
  75 int mmc_getwp(struct mmc *mmc)
  76 {
  77         return dm_mmc_get_wp(mmc->dev);
  78 }
  79
  80 int dm_mmc_get_cd(struct udevice *dev)
  81 {
  82         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  83
  84         if (!ops->get_cd)
  85                 return -ENOSYS;
  86         return ops->get_cd(dev);
  87 }
  88
  89 int mmc_getcd(struct mmc *mmc)
  90 {
  91         return dm_mmc_get_cd(mmc->dev);
  92 }
  93
  94 #ifdef MMC_SUPPORTS_TUNING
  95 int dm_mmc_execute_tuning(struct udevice *dev, uint opcode)
  96 {
  97         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  98
  99         if (!ops->execute_tuning)
 100                 return -ENOSYS;
 101         return ops->execute_tuning(dev, opcode);
 102 }
 103
 104 int mmc_execute_tuning(struct mmc *mmc, uint opcode)
 105 {
 106         return dm_mmc_execute_tuning(mmc->dev, opcode);
 107 }
 108 #endif
 109
 110 #if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT)
 111 int dm_mmc_set_enhanced_strobe(struct udevice *dev)
 112 {
 113         struct dm_mmc_ops *ops = mmc_get_ops(dev);
 114
 115         if (ops->set_enhanced_strobe)
 116                 return ops->set_enhanced_strobe(dev);
 117
 118         return -ENOTSUPP;
 119 }
 120
 121 int mmc_set_enhanced_strobe(struct mmc *mmc)
 122 {
 123         return dm_mmc_set_enhanced_strobe(mmc->dev);
 124 }
 125 #endif
 126
 127 int dm_mmc_host_power_cycle(struct udevice *dev)
 128 {
 129         struct dm_mmc_ops *ops = mmc_get_ops(dev);
 130
 131         if (ops->host_power_cycle)
 132                 return ops->host_power_cycle(dev);
 133         return 0;
 134 }
 135
 136 int mmc_host_power_cycle(struct mmc *mmc)
 137 {
 138         return dm_mmc_host_power_cycle(mmc->dev);
 139 }
 140
 141 int mmc_of_parse(struct udevice *dev, struct mmc_config *cfg)
 142 {
 143         int val;
 144
 145         val = dev_read_u32_default(dev, "bus-width", 1);
 146
 147         switch (val) {
 148         case 0x8:
 149                 cfg->host_caps |= MMC_MODE_8BIT;
 150                 /* fall through */
 151         case 0x4:
 152                 cfg->host_caps |= MMC_MODE_4BIT;
 153                 /* fall through */
 154         case 0x1:
 155                 cfg->host_caps |= MMC_MODE_1BIT;
 156                 break;
 157         default:
 158                 dev_err(dev, "Invalid \"bus-width\" value %u!\n", val);
 159                 return -EINVAL;
 160         }
 161
 162         /* f_max is obtained from the optional "max-frequency" property */
 163         dev_read_u32(dev, "max-frequency", &cfg->f_max);
 164
 165         if (dev_read_bool(dev, "cap-sd-highspeed"))
 166                 cfg->host_caps |= MMC_CAP(SD_HS);
 167         if (dev_read_bool(dev, "cap-mmc-highspeed"))
 168                 cfg->host_caps |= MMC_CAP(MMC_HS);
 169         if (dev_read_bool(dev, "sd-uhs-sdr12"))
 170                 cfg->host_caps |= MMC_CAP(UHS_SDR12);
 171         if (dev_read_bool(dev, "sd-uhs-sdr25"))
 172                 cfg->host_caps |= MMC_CAP(UHS_SDR25);
 173         if (dev_read_bool(dev, "sd-uhs-sdr50"))
 174                 cfg->host_caps |= MMC_CAP(UHS_SDR50);
 175         if (dev_read_bool(dev, "sd-uhs-sdr104"))
 176                 cfg->host_caps |= MMC_CAP(UHS_SDR104);
 177         if (dev_read_bool(dev, "sd-uhs-ddr50"))
 178                 cfg->host_caps |= MMC_CAP(UHS_DDR50);
 179         if (dev_read_bool(dev, "mmc-ddr-1_8v"))
 180                 cfg->host_caps |= MMC_CAP(MMC_DDR_52);
 181         if (dev_read_bool(dev, "mmc-ddr-1_2v"))
 182                 cfg->host_caps |= MMC_CAP(MMC_DDR_52);
 183         if (dev_read_bool(dev, "mmc-hs200-1_8v"))
 184                 cfg->host_caps |= MMC_CAP(MMC_HS_200);
 185         if (dev_read_bool(dev, "mmc-hs200-1_2v"))
 186                 cfg->host_caps |= MMC_CAP(MMC_HS_200);
 187         if (dev_read_bool(dev, "mmc-hs400-1_8v"))
 188                 cfg->host_caps |= MMC_CAP(MMC_HS_400);
 189         if (dev_read_bool(dev, "mmc-hs400-1_2v"))
 190                 cfg->host_caps |= MMC_CAP(MMC_HS_400);
 191         if (dev_read_bool(dev, "mmc-hs400-enhanced-strobe"))
 192                 cfg->host_caps |= MMC_CAP(MMC_HS_400_ES);
 193
 194         if (dev_read_bool(dev, "non-removable")) {
 195                 cfg->host_caps |= MMC_CAP_NONREMOVABLE;
 196         } else {
 197                 if (dev_read_bool(dev, "cd-inverted"))
 198                         cfg->host_caps |= MMC_CAP_CD_ACTIVE_HIGH;
 199                 if (dev_read_bool(dev, "broken-cd"))
 200                         cfg->host_caps |= MMC_CAP_NEEDS_POLL;
 201         }
 202
 203         if (dev_read_bool(dev, "no-1-8-v")) {
 204                 cfg->host_caps &= ~(UHS_CAPS | MMC_MODE_HS200 |
 205                                     MMC_MODE_HS400 | MMC_MODE_HS400_ES);
 206         }
 207
 208         return 0;
 209 }
 210
 211 struct mmc *mmc_get_mmc_dev(struct udevice *dev)
 212 {
 213         struct mmc_uclass_priv *upriv;
 214
 215         if (!device_active(dev))
 216                 return NULL;
 217         upriv = dev_get_uclass_priv(dev);
 218         return upriv->mmc;
 219 }
 220
 221 #if CONFIG_IS_ENABLED(BLK)
 222 struct mmc *find_mmc_device(int dev_num)
 223 {
 224         struct udevice *dev, *mmc_dev;
 225         int ret;
 226
 227         ret = blk_find_device(IF_TYPE_MMC, dev_num, &dev);
 228
 229         if (ret) {
 230 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 231                 printf("MMC Device %d not found\n", dev_num);
 232 #endif
 233                 return NULL;
 234         }
 235
 236         mmc_dev = dev_get_parent(dev);
 237
 238         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 239
 240         return mmc;
 241 }
 242
 243 int get_mmc_num(void)
 244 {
 245         return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0);
 246 }
 247
 248 int mmc_get_next_devnum(void)
 249 {
 250         return blk_find_max_devnum(IF_TYPE_MMC);
 251 }
 252
 253 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
 254 {
 255         struct blk_desc *desc;
 256         struct udevice *dev;
 257
 258         device_find_first_child(mmc->dev, &dev);
 259         if (!dev)
 260                 return NULL;
 261         desc = dev_get_uclass_platdata(dev);
 262
 263         return desc;
 264 }
 265
 266 void mmc_do_preinit(void)
 267 {
 268         struct udevice *dev;
 269         struct uclass *uc;
 270         int ret;
 271
 272         ret = uclass_get(UCLASS_MMC, &uc);
 273         if (ret)
 274                 return;
 275         uclass_foreach_dev(dev, uc) {
 276                 struct mmc *m = mmc_get_mmc_dev(dev);
 277
 278                 if (!m)
 279                         continue;
 280 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
 281                 mmc_set_preinit(m, 1);
 282 #endif
 283                 if (m->preinit)
 284                         mmc_start_init(m);
 285         }
 286 }
 287
 288 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 289 void print_mmc_devices(char separator)
 290 {
 291         struct udevice *dev;
 292         char *mmc_type;
 293         bool first = true;
 294
 295         for (uclass_first_device(UCLASS_MMC, &dev);
 296              dev;
 297              uclass_next_device(&dev), first = false) {
 298                 struct mmc *m = mmc_get_mmc_dev(dev);
 299
 300                 if (!first) {
 301                         printf("%c", separator);
 302                         if (separator != '\n')
 303                                 puts(" ");
 304                 }
 305                 if (m->has_init)
 306                         mmc_type = IS_SD(m) ? "SD" : "eMMC";
 307                 else
 308                         mmc_type = NULL;
 309
 310                 printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum);
 311                 if (mmc_type)
 312                         printf(" (%s)", mmc_type);
 313         }
 314
 315         printf("\n");
 316 }
 317
 318 #else
 319 void print_mmc_devices(char separator) { }
 320 #endif
 321
 322 int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg)
 323 {
 324         struct blk_desc *bdesc;
 325         struct udevice *bdev;
 326         int ret, devnum = -1;
 327
 328         if (!mmc_get_ops(dev))
 329                 return -ENOSYS;
 330 #ifndef CONFIG_SPL_BUILD
 331         /* Use the fixed index with aliase node's index */
 332         ret = dev_read_alias_seq(dev, &devnum);
 333         debug("%s: alias ret=%d, devnum=%d\n", __func__, ret, devnum);
 334 #endif
 335
 336         ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC,
 337                         devnum, 512, 0, &bdev);
 338         if (ret) {
 339                 debug("Cannot create block device\n");
 340                 return ret;
 341         }
 342         bdesc = dev_get_uclass_platdata(bdev);
 343         mmc->cfg = cfg;
 344         mmc->priv = dev;
 345
 346         /* the following chunk was from mmc_register() */
 347
 348         /* Setup dsr related values */
 349         mmc->dsr_imp = 0;
 350         mmc->dsr = 0xffffffff;
 351         /* Setup the universal parts of the block interface just once */
 352         bdesc->removable = 1;
 353
 354         /* setup initial part type */
 355         bdesc->part_type = cfg->part_type;
 356         mmc->dev = dev;
 357
 358         return 0;
 359 }
 360
 361 int mmc_unbind(struct udevice *dev)
 362 {
 363         struct udevice *bdev;
 364
 365         device_find_first_child(dev, &bdev);
 366         if (bdev) {
 367                 device_remove(bdev, DM_REMOVE_NORMAL);
 368                 device_unbind(bdev);
 369         }
 370
 371         return 0;
 372 }
 373
 374 static int mmc_select_hwpart(struct udevice *bdev, int hwpart)
 375 {
 376         struct udevice *mmc_dev = dev_get_parent(bdev);
 377         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 378         struct blk_desc *desc = dev_get_uclass_platdata(bdev);
 379         int ret;
 380
 381         if (desc->hwpart == hwpart)
 382                 return 0;
 383
 384         if (mmc->part_config == MMCPART_NOAVAILABLE)
 385                 return -EMEDIUMTYPE;
 386
 387         ret = mmc_switch_part(mmc, hwpart);
 388         if (!ret)
 389                 blkcache_invalidate(desc->if_type, desc->devnum);
 390
 391         return ret;
 392 }
 393
 394 static int mmc_blk_probe(struct udevice *dev)
 395 {
 396         struct udevice *mmc_dev = dev_get_parent(dev);
 397         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
 398         struct mmc *mmc = upriv->mmc;
 399         int ret;
 400
 401         ret = mmc_init(mmc);
 402         if (ret) {
 403                 debug("%s: mmc_init() failed (err=%d)\n", __func__, ret);
 404                 return ret;
 405         }
 406
 407         return 0;
 408 }
 409
 410 #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) || \
 411     CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) || \
 412     CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
 413 static int mmc_blk_remove(struct udevice *dev)
 414 {
 415         struct udevice *mmc_dev = dev_get_parent(dev);
 416         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
 417         struct mmc *mmc = upriv->mmc;
 418
 419         return mmc_deinit(mmc);
 420 }
 421 #endif
 422
 423 static const struct blk_ops mmc_blk_ops = {
 424         .read   = mmc_bread,
 425 #if CONFIG_IS_ENABLED(MMC_WRITE)
 426         .write  = mmc_bwrite,
 427         .erase  = mmc_berase,
 428 #endif
 429         .select_hwpart  = mmc_select_hwpart,
 430 };
 431
 432 U_BOOT_DRIVER(mmc_blk) = {
 433         .name           = "mmc_blk",
 434         .id             = UCLASS_BLK,
 435         .ops            = &mmc_blk_ops,
 436         .probe          = mmc_blk_probe,
 437 #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) || \
 438     CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) || \
 439     CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
 440         .remove         = mmc_blk_remove,
 441         .flags          = DM_FLAG_OS_PREPARE,
 442 #endif
 443 };
 444 #endif /* CONFIG_BLK */
 445
 446
 447 UCLASS_DRIVER(mmc) = {
 448         .id             = UCLASS_MMC,
 449         .name           = "mmc",
 450         .flags          = DM_UC_FLAG_SEQ_ALIAS,
 451         .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv),
 452 };