drivers/mmc/mmc-uclass.c

   1 /*
   2  * Copyright (C) 2015 Google, Inc
   3  * Written by Simon Glass <sjg@chromium.org>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <mmc.h>
  10 #include <dm.h>
  11 #include <dm/device-internal.h>
  12 #include <dm/lists.h>
  13 #include "mmc_private.h"
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 int dm_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
  18                     struct mmc_data *data)
  19 {
  20         struct mmc *mmc = mmc_get_mmc_dev(dev);
  21         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  22         int ret;
  23
  24         mmmc_trace_before_send(mmc, cmd);
  25         if (ops->send_cmd)
  26                 ret = ops->send_cmd(dev, cmd, data);
  27         else
  28                 ret = -ENOSYS;
  29         mmmc_trace_after_send(mmc, cmd, ret);
  30
  31         return ret;
  32 }
  33
  34 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
  35 {
  36         return dm_mmc_send_cmd(mmc->dev, cmd, data);
  37 }
  38
  39 int dm_mmc_set_ios(struct udevice *dev)
  40 {
  41         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  42
  43         if (!ops->set_ios)
  44                 return -ENOSYS;
  45         return ops->set_ios(dev);
  46 }
  47
  48 int mmc_set_ios(struct mmc *mmc)
  49 {
  50         return dm_mmc_set_ios(mmc->dev);
  51 }
  52
  53 void dm_mmc_send_init_stream(struct udevice *dev)
  54 {
  55         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  56
  57         if (ops->send_init_stream)
  58                 ops->send_init_stream(dev);
  59 }
  60
  61 void mmc_send_init_stream(struct mmc *mmc)
  62 {
  63         dm_mmc_send_init_stream(mmc->dev);
  64 }
  65
  66 int dm_mmc_wait_dat0(struct udevice *dev, int state, int timeout)
  67 {
  68         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  69
  70         if (!ops->wait_dat0)
  71                 return -ENOSYS;
  72         return ops->wait_dat0(dev, state, timeout);
  73 }
  74
  75 int mmc_wait_dat0(struct mmc *mmc, int state, int timeout)
  76 {
  77         return dm_mmc_wait_dat0(mmc->dev, state, timeout);
  78 }
  79
  80 int dm_mmc_get_wp(struct udevice *dev)
  81 {
  82         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  83
  84         if (!ops->get_wp)
  85                 return -ENOSYS;
  86         return ops->get_wp(dev);
  87 }
  88
  89 int mmc_getwp(struct mmc *mmc)
  90 {
  91         return dm_mmc_get_wp(mmc->dev);
  92 }
  93
  94 int dm_mmc_get_cd(struct udevice *dev)
  95 {
  96         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  97
  98         if (!ops->get_cd)
  99                 return -ENOSYS;
 100         return ops->get_cd(dev);
 101 }
 102
 103 int mmc_getcd(struct mmc *mmc)
 104 {
 105         return dm_mmc_get_cd(mmc->dev);
 106 }
 107
 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
 122 int mmc_of_parse(struct udevice *dev, struct mmc_config *cfg)
 123 {
 124         int val;
 125
 126         val = dev_read_u32_default(dev, "bus-width", 1);
 127
 128         switch (val) {
 129         case 0x8:
 130                 cfg->host_caps |= MMC_MODE_8BIT;
 131                 /* fall through */
 132         case 0x4:
 133                 cfg->host_caps |= MMC_MODE_4BIT;
 134                 /* fall through */
 135         case 0x1:
 136                 cfg->host_caps |= MMC_MODE_1BIT;
 137                 break;
 138         default:
 139                 debug("warning: %s invalid bus-width property. using 1-bit\n",
 140                       dev_read_name(dev));
 141                 cfg->host_caps |= MMC_MODE_1BIT;
 142                 break;
 143         }
 144
 145         cfg->f_max = dev_read_u32_default(dev, "max-frequency", 52000000);
 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
 170         return 0;
 171 }
 172
 173 struct mmc *mmc_get_mmc_dev(struct udevice *dev)
 174 {
 175         struct mmc_uclass_priv *upriv;
 176
 177         if (!device_active(dev))
 178                 return NULL;
 179         upriv = dev_get_uclass_priv(dev);
 180         return upriv->mmc;
 181 }
 182
 183 #if CONFIG_IS_ENABLED(BLK)
 184 struct mmc *find_mmc_device(int dev_num)
 185 {
 186         struct udevice *dev, *mmc_dev;
 187         int ret;
 188
 189         ret = blk_find_device(IF_TYPE_MMC, dev_num, &dev);
 190
 191         if (ret) {
 192 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 193                 printf("MMC Device %d not found\n", dev_num);
 194 #endif
 195                 return NULL;
 196         }
 197
 198         mmc_dev = dev_get_parent(dev);
 199
 200         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 201
 202         return mmc;
 203 }
 204
 205 int get_mmc_num(void)
 206 {
 207         return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0);
 208 }
 209
 210 int mmc_get_next_devnum(void)
 211 {
 212         return blk_find_max_devnum(IF_TYPE_MMC);
 213 }
 214
 215 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
 216 {
 217         struct blk_desc *desc;
 218         struct udevice *dev;
 219
 220         device_find_first_child(mmc->dev, &dev);
 221         if (!dev)
 222                 return NULL;
 223         desc = dev_get_uclass_platdata(dev);
 224
 225         return desc;
 226 }
 227
 228 void mmc_do_preinit(void)
 229 {
 230         struct udevice *dev;
 231         struct uclass *uc;
 232         int ret;
 233
 234         ret = uclass_get(UCLASS_MMC, &uc);
 235         if (ret)
 236                 return;
 237         uclass_foreach_dev(dev, uc) {
 238                 struct mmc *m = mmc_get_mmc_dev(dev);
 239
 240                 if (!m)
 241                         continue;
 242 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
 243                 mmc_set_preinit(m, 1);
 244 #endif
 245                 if (m->preinit)
 246                         mmc_start_init(m);
 247         }
 248 }
 249
 250 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 251 void print_mmc_devices(char separator)
 252 {
 253         struct udevice *dev;
 254         char *mmc_type;
 255         bool first = true;
 256
 257         for (uclass_first_device(UCLASS_MMC, &dev);
 258              dev;
 259              uclass_next_device(&dev), first = false) {
 260                 struct mmc *m = mmc_get_mmc_dev(dev);
 261
 262                 if (!first) {
 263                         printf("%c", separator);
 264                         if (separator != '\n')
 265                                 puts(" ");
 266                 }
 267                 if (m->has_init)
 268                         mmc_type = IS_SD(m) ? "SD" : "eMMC";
 269                 else
 270                         mmc_type = NULL;
 271
 272                 printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum);
 273                 if (mmc_type)
 274                         printf(" (%s)", mmc_type);
 275         }
 276
 277         printf("\n");
 278 }
 279
 280 #else
 281 void print_mmc_devices(char separator) { }
 282 #endif
 283
 284 int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg)
 285 {
 286         struct blk_desc *bdesc;
 287         struct udevice *bdev;
 288         int ret, devnum = -1;
 289
 290         if (!mmc_get_ops(dev))
 291                 return -ENOSYS;
 292 #ifndef CONFIG_SPL_BUILD
 293         /* Use the fixed index with aliase node's index */
 294         ret = dev_read_alias_seq(dev, &devnum);
 295         debug("%s: alias ret=%d, devnum=%d\n", __func__, ret, devnum);
 296 #endif
 297
 298         ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC,
 299                         devnum, 512, 0, &bdev);
 300         if (ret) {
 301                 debug("Cannot create block device\n");
 302                 return ret;
 303         }
 304         bdesc = dev_get_uclass_platdata(bdev);
 305         mmc->cfg = cfg;
 306         mmc->priv = dev;
 307
 308         /* the following chunk was from mmc_register() */
 309
 310         /* Setup dsr related values */
 311         mmc->dsr_imp = 0;
 312         mmc->dsr = 0xffffffff;
 313         /* Setup the universal parts of the block interface just once */
 314         bdesc->removable = 1;
 315
 316         /* setup initial part type */
 317         bdesc->part_type = cfg->part_type;
 318         mmc->dev = dev;
 319
 320         return 0;
 321 }
 322
 323 int mmc_unbind(struct udevice *dev)
 324 {
 325         struct udevice *bdev;
 326
 327         device_find_first_child(dev, &bdev);
 328         if (bdev) {
 329                 device_remove(bdev, DM_REMOVE_NORMAL);
 330                 device_unbind(bdev);
 331         }
 332
 333         return 0;
 334 }
 335
 336 static int mmc_select_hwpart(struct udevice *bdev, int hwpart)
 337 {
 338         struct udevice *mmc_dev = dev_get_parent(bdev);
 339         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 340         struct blk_desc *desc = dev_get_uclass_platdata(bdev);
 341
 342         if (desc->hwpart == hwpart)
 343                 return 0;
 344
 345         if (mmc->part_config == MMCPART_NOAVAILABLE)
 346                 return -EMEDIUMTYPE;
 347
 348         return mmc_switch_part(mmc, hwpart);
 349 }
 350
 351 static int mmc_blk_probe(struct udevice *dev)
 352 {
 353         struct udevice *mmc_dev = dev_get_parent(dev);
 354         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
 355         struct mmc *mmc = upriv->mmc;
 356         int ret;
 357
 358         ret = mmc_init(mmc);
 359         if (ret) {
 360                 debug("%s: mmc_init() failed (err=%d)\n", __func__, ret);
 361                 return ret;
 362         }
 363
 364         return 0;
 365 }
 366
 367 static const struct blk_ops mmc_blk_ops = {
 368         .read   = mmc_bread,
 369 #ifndef CONFIG_SPL_BUILD
 370         .write  = mmc_bwrite,
 371         .erase  = mmc_berase,
 372 #endif
 373         .select_hwpart  = mmc_select_hwpart,
 374 };
 375
 376 U_BOOT_DRIVER(mmc_blk) = {
 377         .name           = "mmc_blk",
 378         .id             = UCLASS_BLK,
 379         .ops            = &mmc_blk_ops,
 380         .probe          = mmc_blk_probe,
 381 };
 382 #endif /* CONFIG_BLK */
 383
 384 U_BOOT_DRIVER(mmc) = {
 385         .name   = "mmc",
 386         .id     = UCLASS_MMC,
 387 };
 388
 389 UCLASS_DRIVER(mmc) = {
 390         .id             = UCLASS_MMC,
 391         .name           = "mmc",
 392         .flags          = DM_UC_FLAG_SEQ_ALIAS,
 393         .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv),
 394 };