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                 debug("warning: %s invalid bus-width property. using 1-bit\n",
 144                       dev_read_name(dev));
 145                 cfg->host_caps |= MMC_MODE_1BIT;
 146                 break;
 147         }
 148
 149         cfg->f_max = dev_read_u32_default(dev, "max-frequency", 52000000);
 150
 151         if (dev_read_bool(dev, "cap-sd-highspeed"))
 152                 cfg->host_caps |= MMC_CAP(SD_HS);
 153         if (dev_read_bool(dev, "cap-mmc-highspeed"))
 154                 cfg->host_caps |= MMC_CAP(MMC_HS);
 155         if (dev_read_bool(dev, "sd-uhs-sdr12"))
 156                 cfg->host_caps |= MMC_CAP(UHS_SDR12);
 157         if (dev_read_bool(dev, "sd-uhs-sdr25"))
 158                 cfg->host_caps |= MMC_CAP(UHS_SDR25);
 159         if (dev_read_bool(dev, "sd-uhs-sdr50"))
 160                 cfg->host_caps |= MMC_CAP(UHS_SDR50);
 161         if (dev_read_bool(dev, "sd-uhs-sdr104"))
 162                 cfg->host_caps |= MMC_CAP(UHS_SDR104);
 163         if (dev_read_bool(dev, "sd-uhs-ddr50"))
 164                 cfg->host_caps |= MMC_CAP(UHS_DDR50);
 165         if (dev_read_bool(dev, "mmc-ddr-1_8v"))
 166                 cfg->host_caps |= MMC_CAP(MMC_DDR_52);
 167         if (dev_read_bool(dev, "mmc-ddr-1_2v"))
 168                 cfg->host_caps |= MMC_CAP(MMC_DDR_52);
 169         if (dev_read_bool(dev, "mmc-hs200-1_8v"))
 170                 cfg->host_caps |= MMC_CAP(MMC_HS_200);
 171         if (dev_read_bool(dev, "mmc-hs200-1_2v"))
 172                 cfg->host_caps |= MMC_CAP(MMC_HS_200);
 173
 174         return 0;
 175 }
 176
 177 struct mmc *mmc_get_mmc_dev(struct udevice *dev)
 178 {
 179         struct mmc_uclass_priv *upriv;
 180
 181         if (!device_active(dev))
 182                 return NULL;
 183         upriv = dev_get_uclass_priv(dev);
 184         return upriv->mmc;
 185 }
 186
 187 #if CONFIG_IS_ENABLED(BLK)
 188 struct mmc *find_mmc_device(int dev_num)
 189 {
 190         struct udevice *dev, *mmc_dev;
 191         int ret;
 192
 193         ret = blk_find_device(IF_TYPE_MMC, dev_num, &dev);
 194
 195         if (ret) {
 196 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 197                 printf("MMC Device %d not found\n", dev_num);
 198 #endif
 199                 return NULL;
 200         }
 201
 202         mmc_dev = dev_get_parent(dev);
 203
 204         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 205
 206         return mmc;
 207 }
 208
 209 int get_mmc_num(void)
 210 {
 211         return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0);
 212 }
 213
 214 int mmc_get_next_devnum(void)
 215 {
 216         return blk_find_max_devnum(IF_TYPE_MMC);
 217 }
 218
 219 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
 220 {
 221         struct blk_desc *desc;
 222         struct udevice *dev;
 223
 224         device_find_first_child(mmc->dev, &dev);
 225         if (!dev)
 226                 return NULL;
 227         desc = dev_get_uclass_platdata(dev);
 228
 229         return desc;
 230 }
 231
 232 void mmc_do_preinit(void)
 233 {
 234         struct udevice *dev;
 235         struct uclass *uc;
 236         int ret;
 237
 238         ret = uclass_get(UCLASS_MMC, &uc);
 239         if (ret)
 240                 return;
 241         uclass_foreach_dev(dev, uc) {
 242                 struct mmc *m = mmc_get_mmc_dev(dev);
 243
 244                 if (!m)
 245                         continue;
 246 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
 247                 mmc_set_preinit(m, 1);
 248 #endif
 249                 if (m->preinit)
 250                         mmc_start_init(m);
 251         }
 252 }
 253
 254 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 255 void print_mmc_devices(char separator)
 256 {
 257         struct udevice *dev;
 258         char *mmc_type;
 259         bool first = true;
 260
 261         for (uclass_first_device(UCLASS_MMC, &dev);
 262              dev;
 263              uclass_next_device(&dev), first = false) {
 264                 struct mmc *m = mmc_get_mmc_dev(dev);
 265
 266                 if (!first) {
 267                         printf("%c", separator);
 268                         if (separator != '\n')
 269                                 puts(" ");
 270                 }
 271                 if (m->has_init)
 272                         mmc_type = IS_SD(m) ? "SD" : "eMMC";
 273                 else
 274                         mmc_type = NULL;
 275
 276                 printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum);
 277                 if (mmc_type)
 278                         printf(" (%s)", mmc_type);
 279         }
 280
 281         printf("\n");
 282 }
 283
 284 #else
 285 void print_mmc_devices(char separator) { }
 286 #endif
 287
 288 int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg)
 289 {
 290         struct blk_desc *bdesc;
 291         struct udevice *bdev;
 292         int ret, devnum = -1;
 293
 294         if (!mmc_get_ops(dev))
 295                 return -ENOSYS;
 296 #ifndef CONFIG_SPL_BUILD
 297         /* Use the fixed index with aliase node's index */
 298         ret = dev_read_alias_seq(dev, &devnum);
 299         debug("%s: alias ret=%d, devnum=%d\n", __func__, ret, devnum);
 300 #endif
 301
 302         ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC,
 303                         devnum, 512, 0, &bdev);
 304         if (ret) {
 305                 debug("Cannot create block device\n");
 306                 return ret;
 307         }
 308         bdesc = dev_get_uclass_platdata(bdev);
 309         mmc->cfg = cfg;
 310         mmc->priv = dev;
 311
 312         /* the following chunk was from mmc_register() */
 313
 314         /* Setup dsr related values */
 315         mmc->dsr_imp = 0;
 316         mmc->dsr = 0xffffffff;
 317         /* Setup the universal parts of the block interface just once */
 318         bdesc->removable = 1;
 319
 320         /* setup initial part type */
 321         bdesc->part_type = cfg->part_type;
 322         mmc->dev = dev;
 323
 324         return 0;
 325 }
 326
 327 int mmc_unbind(struct udevice *dev)
 328 {
 329         struct udevice *bdev;
 330
 331         device_find_first_child(dev, &bdev);
 332         if (bdev) {
 333                 device_remove(bdev, DM_REMOVE_NORMAL);
 334                 device_unbind(bdev);
 335         }
 336
 337         return 0;
 338 }
 339
 340 static int mmc_select_hwpart(struct udevice *bdev, int hwpart)
 341 {
 342         struct udevice *mmc_dev = dev_get_parent(bdev);
 343         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 344         struct blk_desc *desc = dev_get_uclass_platdata(bdev);
 345
 346         if (desc->hwpart == hwpart)
 347                 return 0;
 348
 349         if (mmc->part_config == MMCPART_NOAVAILABLE)
 350                 return -EMEDIUMTYPE;
 351
 352         return mmc_switch_part(mmc, hwpart);
 353 }
 354
 355 static int mmc_blk_probe(struct udevice *dev)
 356 {
 357         struct udevice *mmc_dev = dev_get_parent(dev);
 358         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
 359         struct mmc *mmc = upriv->mmc;
 360         int ret;
 361
 362         ret = mmc_init(mmc);
 363         if (ret) {
 364                 debug("%s: mmc_init() failed (err=%d)\n", __func__, ret);
 365                 return ret;
 366         }
 367
 368         return 0;
 369 }
 370
 371 static const struct blk_ops mmc_blk_ops = {
 372         .read   = mmc_bread,
 373 #ifndef CONFIG_SPL_BUILD
 374         .write  = mmc_bwrite,
 375         .erase  = mmc_berase,
 376 #endif
 377         .select_hwpart  = mmc_select_hwpart,
 378 };
 379
 380 U_BOOT_DRIVER(mmc_blk) = {
 381         .name           = "mmc_blk",
 382         .id             = UCLASS_BLK,
 383         .ops            = &mmc_blk_ops,
 384         .probe          = mmc_blk_probe,
 385 };
 386 #endif /* CONFIG_BLK */
 387
 388 U_BOOT_DRIVER(mmc) = {
 389         .name   = "mmc",
 390         .id     = UCLASS_MMC,
 391 };
 392
 393 UCLASS_DRIVER(mmc) = {
 394         .id             = UCLASS_MMC,
 395         .name           = "mmc",
 396         .flags          = DM_UC_FLAG_SEQ_ALIAS,
 397         .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv),
 398 };