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 #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
  67 int dm_mmc_wait_dat0(struct udevice *dev, int state, int timeout)
  68 {
  69         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  70
  71         if (!ops->wait_dat0)
  72                 return -ENOSYS;
  73         return ops->wait_dat0(dev, state, timeout);
  74 }
  75
  76 int mmc_wait_dat0(struct mmc *mmc, int state, int timeout)
  77 {
  78         return dm_mmc_wait_dat0(mmc->dev, state, timeout);
  79 }
  80 #endif
  81
  82 int dm_mmc_get_wp(struct udevice *dev)
  83 {
  84         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  85
  86         if (!ops->get_wp)
  87                 return -ENOSYS;
  88         return ops->get_wp(dev);
  89 }
  90
  91 int mmc_getwp(struct mmc *mmc)
  92 {
  93         return dm_mmc_get_wp(mmc->dev);
  94 }
  95
  96 int dm_mmc_get_cd(struct udevice *dev)
  97 {
  98         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  99
 100         if (!ops->get_cd)
 101                 return -ENOSYS;
 102         return ops->get_cd(dev);
 103 }
 104
 105 int mmc_getcd(struct mmc *mmc)
 106 {
 107         return dm_mmc_get_cd(mmc->dev);
 108 }
 109
 110 #ifdef MMC_SUPPORTS_TUNING
 111 int dm_mmc_execute_tuning(struct udevice *dev, uint opcode)
 112 {
 113         struct dm_mmc_ops *ops = mmc_get_ops(dev);
 114
 115         if (!ops->execute_tuning)
 116                 return -ENOSYS;
 117         return ops->execute_tuning(dev, opcode);
 118 }
 119
 120 int mmc_execute_tuning(struct mmc *mmc, uint opcode)
 121 {
 122         return dm_mmc_execute_tuning(mmc->dev, opcode);
 123 }
 124 #endif
 125
 126 int mmc_of_parse(struct udevice *dev, struct mmc_config *cfg)
 127 {
 128         int val;
 129
 130         val = dev_read_u32_default(dev, "bus-width", 1);
 131
 132         switch (val) {
 133         case 0x8:
 134                 cfg->host_caps |= MMC_MODE_8BIT;
 135                 /* fall through */
 136         case 0x4:
 137                 cfg->host_caps |= MMC_MODE_4BIT;
 138                 /* fall through */
 139         case 0x1:
 140                 cfg->host_caps |= MMC_MODE_1BIT;
 141                 break;
 142         default:
 143                 dev_err(dev, "Invalid \"bus-width\" value %u!\n", val);
 144                 return -EINVAL;
 145         }
 146
 147         /* f_max is obtained from the optional "max-frequency" property */
 148         dev_read_u32(dev, "max-frequency", &cfg->f_max);
 149
 150         if (dev_read_bool(dev, "cap-sd-highspeed"))
 151                 cfg->host_caps |= MMC_CAP(SD_HS);
 152         if (dev_read_bool(dev, "cap-mmc-highspeed"))
 153                 cfg->host_caps |= MMC_CAP(MMC_HS);
 154         if (dev_read_bool(dev, "sd-uhs-sdr12"))
 155                 cfg->host_caps |= MMC_CAP(UHS_SDR12);
 156         if (dev_read_bool(dev, "sd-uhs-sdr25"))
 157                 cfg->host_caps |= MMC_CAP(UHS_SDR25);
 158         if (dev_read_bool(dev, "sd-uhs-sdr50"))
 159                 cfg->host_caps |= MMC_CAP(UHS_SDR50);
 160         if (dev_read_bool(dev, "sd-uhs-sdr104"))
 161                 cfg->host_caps |= MMC_CAP(UHS_SDR104);
 162         if (dev_read_bool(dev, "sd-uhs-ddr50"))
 163                 cfg->host_caps |= MMC_CAP(UHS_DDR50);
 164         if (dev_read_bool(dev, "mmc-ddr-1_8v"))
 165                 cfg->host_caps |= MMC_CAP(MMC_DDR_52);
 166         if (dev_read_bool(dev, "mmc-ddr-1_2v"))
 167                 cfg->host_caps |= MMC_CAP(MMC_DDR_52);
 168         if (dev_read_bool(dev, "mmc-hs200-1_8v"))
 169                 cfg->host_caps |= MMC_CAP(MMC_HS_200);
 170         if (dev_read_bool(dev, "mmc-hs200-1_2v"))
 171                 cfg->host_caps |= MMC_CAP(MMC_HS_200);
 172
 173         return 0;
 174 }
 175
 176 struct mmc *mmc_get_mmc_dev(struct udevice *dev)
 177 {
 178         struct mmc_uclass_priv *upriv;
 179
 180         if (!device_active(dev))
 181                 return NULL;
 182         upriv = dev_get_uclass_priv(dev);
 183         return upriv->mmc;
 184 }
 185
 186 #if CONFIG_IS_ENABLED(BLK)
 187 struct mmc *find_mmc_device(int dev_num)
 188 {
 189         struct udevice *dev, *mmc_dev;
 190         int ret;
 191
 192         ret = blk_find_device(IF_TYPE_MMC, dev_num, &dev);
 193
 194         if (ret) {
 195 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 196                 printf("MMC Device %d not found\n", dev_num);
 197 #endif
 198                 return NULL;
 199         }
 200
 201         mmc_dev = dev_get_parent(dev);
 202
 203         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 204
 205         return mmc;
 206 }
 207
 208 int get_mmc_num(void)
 209 {
 210         return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0);
 211 }
 212
 213 int mmc_get_next_devnum(void)
 214 {
 215         return blk_find_max_devnum(IF_TYPE_MMC);
 216 }
 217
 218 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
 219 {
 220         struct blk_desc *desc;
 221         struct udevice *dev;
 222
 223         device_find_first_child(mmc->dev, &dev);
 224         if (!dev)
 225                 return NULL;
 226         desc = dev_get_uclass_platdata(dev);
 227
 228         return desc;
 229 }
 230
 231 void mmc_do_preinit(void)
 232 {
 233         struct udevice *dev;
 234         struct uclass *uc;
 235         int ret;
 236
 237         ret = uclass_get(UCLASS_MMC, &uc);
 238         if (ret)
 239                 return;
 240         uclass_foreach_dev(dev, uc) {
 241                 struct mmc *m = mmc_get_mmc_dev(dev);
 242
 243                 if (!m)
 244                         continue;
 245 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
 246                 mmc_set_preinit(m, 1);
 247 #endif
 248                 if (m->preinit)
 249                         mmc_start_init(m);
 250         }
 251 }
 252
 253 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 254 void print_mmc_devices(char separator)
 255 {
 256         struct udevice *dev;
 257         char *mmc_type;
 258         bool first = true;
 259
 260         for (uclass_first_device(UCLASS_MMC, &dev);
 261              dev;
 262              uclass_next_device(&dev), first = false) {
 263                 struct mmc *m = mmc_get_mmc_dev(dev);
 264
 265                 if (!first) {
 266                         printf("%c", separator);
 267                         if (separator != '\n')
 268                                 puts(" ");
 269                 }
 270                 if (m->has_init)
 271                         mmc_type = IS_SD(m) ? "SD" : "eMMC";
 272                 else
 273                         mmc_type = NULL;
 274
 275                 printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum);
 276                 if (mmc_type)
 277                         printf(" (%s)", mmc_type);
 278         }
 279
 280         printf("\n");
 281 }
 282
 283 #else
 284 void print_mmc_devices(char separator) { }
 285 #endif
 286
 287 int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg)
 288 {
 289         struct blk_desc *bdesc;
 290         struct udevice *bdev;
 291         int ret, devnum = -1;
 292
 293         if (!mmc_get_ops(dev))
 294                 return -ENOSYS;
 295 #ifndef CONFIG_SPL_BUILD
 296         /* Use the fixed index with aliase node's index */
 297         ret = dev_read_alias_seq(dev, &devnum);
 298         debug("%s: alias ret=%d, devnum=%d\n", __func__, ret, devnum);
 299 #endif
 300
 301         ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC,
 302                         devnum, 512, 0, &bdev);
 303         if (ret) {
 304                 debug("Cannot create block device\n");
 305                 return ret;
 306         }
 307         bdesc = dev_get_uclass_platdata(bdev);
 308         mmc->cfg = cfg;
 309         mmc->priv = dev;
 310
 311         /* the following chunk was from mmc_register() */
 312
 313         /* Setup dsr related values */
 314         mmc->dsr_imp = 0;
 315         mmc->dsr = 0xffffffff;
 316         /* Setup the universal parts of the block interface just once */
 317         bdesc->removable = 1;
 318
 319         /* setup initial part type */
 320         bdesc->part_type = cfg->part_type;
 321         mmc->dev = dev;
 322
 323         return 0;
 324 }
 325
 326 int mmc_unbind(struct udevice *dev)
 327 {
 328         struct udevice *bdev;
 329
 330         device_find_first_child(dev, &bdev);
 331         if (bdev) {
 332                 device_remove(bdev, DM_REMOVE_NORMAL);
 333                 device_unbind(bdev);
 334         }
 335
 336         return 0;
 337 }
 338
 339 static int mmc_select_hwpart(struct udevice *bdev, int hwpart)
 340 {
 341         struct udevice *mmc_dev = dev_get_parent(bdev);
 342         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 343         struct blk_desc *desc = dev_get_uclass_platdata(bdev);
 344
 345         if (desc->hwpart == hwpart)
 346                 return 0;
 347
 348         if (mmc->part_config == MMCPART_NOAVAILABLE)
 349                 return -EMEDIUMTYPE;
 350
 351         return mmc_switch_part(mmc, hwpart);
 352 }
 353
 354 static int mmc_blk_probe(struct udevice *dev)
 355 {
 356         struct udevice *mmc_dev = dev_get_parent(dev);
 357         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
 358         struct mmc *mmc = upriv->mmc;
 359         int ret;
 360
 361         ret = mmc_init(mmc);
 362         if (ret) {
 363                 debug("%s: mmc_init() failed (err=%d)\n", __func__, ret);
 364                 return ret;
 365         }
 366
 367         return 0;
 368 }
 369
 370 static const struct blk_ops mmc_blk_ops = {
 371         .read   = mmc_bread,
 372 #if CONFIG_IS_ENABLED(MMC_WRITE)
 373         .write  = mmc_bwrite,
 374         .erase  = mmc_berase,
 375 #endif
 376         .select_hwpart  = mmc_select_hwpart,
 377 };
 378
 379 U_BOOT_DRIVER(mmc_blk) = {
 380         .name           = "mmc_blk",
 381         .id             = UCLASS_BLK,
 382         .ops            = &mmc_blk_ops,
 383         .probe          = mmc_blk_probe,
 384 };
 385 #endif /* CONFIG_BLK */
 386
 387 U_BOOT_DRIVER(mmc) = {
 388         .name   = "mmc",
 389         .id     = UCLASS_MMC,
 390 };
 391
 392 UCLASS_DRIVER(mmc) = {
 393         .id             = UCLASS_MMC,
 394         .name           = "mmc",
 395         .flags          = DM_UC_FLAG_SEQ_ALIAS,
 396         .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv),
 397 };