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