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         /* f_max is obtained from the optional "max-frequency" property */
 150         dev_read_u32(dev, "max-frequency", &cfg->f_max);
 151
 152         if (dev_read_bool(dev, "cap-sd-highspeed"))
 153                 cfg->host_caps |= MMC_CAP(SD_HS);
 154         if (dev_read_bool(dev, "cap-mmc-highspeed"))
 155                 cfg->host_caps |= MMC_CAP(MMC_HS);
 156         if (dev_read_bool(dev, "sd-uhs-sdr12"))
 157                 cfg->host_caps |= MMC_CAP(UHS_SDR12);
 158         if (dev_read_bool(dev, "sd-uhs-sdr25"))
 159                 cfg->host_caps |= MMC_CAP(UHS_SDR25);
 160         if (dev_read_bool(dev, "sd-uhs-sdr50"))
 161                 cfg->host_caps |= MMC_CAP(UHS_SDR50);
 162         if (dev_read_bool(dev, "sd-uhs-sdr104"))
 163                 cfg->host_caps |= MMC_CAP(UHS_SDR104);
 164         if (dev_read_bool(dev, "sd-uhs-ddr50"))
 165                 cfg->host_caps |= MMC_CAP(UHS_DDR50);
 166         if (dev_read_bool(dev, "mmc-ddr-1_8v"))
 167                 cfg->host_caps |= MMC_CAP(MMC_DDR_52);
 168         if (dev_read_bool(dev, "mmc-ddr-1_2v"))
 169                 cfg->host_caps |= MMC_CAP(MMC_DDR_52);
 170         if (dev_read_bool(dev, "mmc-hs200-1_8v"))
 171                 cfg->host_caps |= MMC_CAP(MMC_HS_200);
 172         if (dev_read_bool(dev, "mmc-hs200-1_2v"))
 173                 cfg->host_caps |= MMC_CAP(MMC_HS_200);
 174
 175         return 0;
 176 }
 177
 178 struct mmc *mmc_get_mmc_dev(struct udevice *dev)
 179 {
 180         struct mmc_uclass_priv *upriv;
 181
 182         if (!device_active(dev))
 183                 return NULL;
 184         upriv = dev_get_uclass_priv(dev);
 185         return upriv->mmc;
 186 }
 187
 188 #if CONFIG_IS_ENABLED(BLK)
 189 struct mmc *find_mmc_device(int dev_num)
 190 {
 191         struct udevice *dev, *mmc_dev;
 192         int ret;
 193
 194         ret = blk_find_device(IF_TYPE_MMC, dev_num, &dev);
 195
 196         if (ret) {
 197 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 198                 printf("MMC Device %d not found\n", dev_num);
 199 #endif
 200                 return NULL;
 201         }
 202
 203         mmc_dev = dev_get_parent(dev);
 204
 205         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 206
 207         return mmc;
 208 }
 209
 210 int get_mmc_num(void)
 211 {
 212         return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0);
 213 }
 214
 215 int mmc_get_next_devnum(void)
 216 {
 217         return blk_find_max_devnum(IF_TYPE_MMC);
 218 }
 219
 220 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
 221 {
 222         struct blk_desc *desc;
 223         struct udevice *dev;
 224
 225         device_find_first_child(mmc->dev, &dev);
 226         if (!dev)
 227                 return NULL;
 228         desc = dev_get_uclass_platdata(dev);
 229
 230         return desc;
 231 }
 232
 233 void mmc_do_preinit(void)
 234 {
 235         struct udevice *dev;
 236         struct uclass *uc;
 237         int ret;
 238
 239         ret = uclass_get(UCLASS_MMC, &uc);
 240         if (ret)
 241                 return;
 242         uclass_foreach_dev(dev, uc) {
 243                 struct mmc *m = mmc_get_mmc_dev(dev);
 244
 245                 if (!m)
 246                         continue;
 247 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
 248                 mmc_set_preinit(m, 1);
 249 #endif
 250                 if (m->preinit)
 251                         mmc_start_init(m);
 252         }
 253 }
 254
 255 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 256 void print_mmc_devices(char separator)
 257 {
 258         struct udevice *dev;
 259         char *mmc_type;
 260         bool first = true;
 261
 262         for (uclass_first_device(UCLASS_MMC, &dev);
 263              dev;
 264              uclass_next_device(&dev), first = false) {
 265                 struct mmc *m = mmc_get_mmc_dev(dev);
 266
 267                 if (!first) {
 268                         printf("%c", separator);
 269                         if (separator != '\n')
 270                                 puts(" ");
 271                 }
 272                 if (m->has_init)
 273                         mmc_type = IS_SD(m) ? "SD" : "eMMC";
 274                 else
 275                         mmc_type = NULL;
 276
 277                 printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum);
 278                 if (mmc_type)
 279                         printf(" (%s)", mmc_type);
 280         }
 281
 282         printf("\n");
 283 }
 284
 285 #else
 286 void print_mmc_devices(char separator) { }
 287 #endif
 288
 289 int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg)
 290 {
 291         struct blk_desc *bdesc;
 292         struct udevice *bdev;
 293         int ret, devnum = -1;
 294
 295         if (!mmc_get_ops(dev))
 296                 return -ENOSYS;
 297 #ifndef CONFIG_SPL_BUILD
 298         /* Use the fixed index with aliase node's index */
 299         ret = dev_read_alias_seq(dev, &devnum);
 300         debug("%s: alias ret=%d, devnum=%d\n", __func__, ret, devnum);
 301 #endif
 302
 303         ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC,
 304                         devnum, 512, 0, &bdev);
 305         if (ret) {
 306                 debug("Cannot create block device\n");
 307                 return ret;
 308         }
 309         bdesc = dev_get_uclass_platdata(bdev);
 310         mmc->cfg = cfg;
 311         mmc->priv = dev;
 312
 313         /* the following chunk was from mmc_register() */
 314
 315         /* Setup dsr related values */
 316         mmc->dsr_imp = 0;
 317         mmc->dsr = 0xffffffff;
 318         /* Setup the universal parts of the block interface just once */
 319         bdesc->removable = 1;
 320
 321         /* setup initial part type */
 322         bdesc->part_type = cfg->part_type;
 323         mmc->dev = dev;
 324
 325         return 0;
 326 }
 327
 328 int mmc_unbind(struct udevice *dev)
 329 {
 330         struct udevice *bdev;
 331
 332         device_find_first_child(dev, &bdev);
 333         if (bdev) {
 334                 device_remove(bdev, DM_REMOVE_NORMAL);
 335                 device_unbind(bdev);
 336         }
 337
 338         return 0;
 339 }
 340
 341 static int mmc_select_hwpart(struct udevice *bdev, int hwpart)
 342 {
 343         struct udevice *mmc_dev = dev_get_parent(bdev);
 344         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 345         struct blk_desc *desc = dev_get_uclass_platdata(bdev);
 346
 347         if (desc->hwpart == hwpart)
 348                 return 0;
 349
 350         if (mmc->part_config == MMCPART_NOAVAILABLE)
 351                 return -EMEDIUMTYPE;
 352
 353         return mmc_switch_part(mmc, hwpart);
 354 }
 355
 356 static int mmc_blk_probe(struct udevice *dev)
 357 {
 358         struct udevice *mmc_dev = dev_get_parent(dev);
 359         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
 360         struct mmc *mmc = upriv->mmc;
 361         int ret;
 362
 363         ret = mmc_init(mmc);
 364         if (ret) {
 365                 debug("%s: mmc_init() failed (err=%d)\n", __func__, ret);
 366                 return ret;
 367         }
 368
 369         return 0;
 370 }
 371
 372 static const struct blk_ops mmc_blk_ops = {
 373         .read   = mmc_bread,
 374 #if CONFIG_IS_ENABLED(MMC_WRITE)
 375         .write  = mmc_bwrite,
 376         .erase  = mmc_berase,
 377 #endif
 378         .select_hwpart  = mmc_select_hwpart,
 379 };
 380
 381 U_BOOT_DRIVER(mmc_blk) = {
 382         .name           = "mmc_blk",
 383         .id             = UCLASS_BLK,
 384         .ops            = &mmc_blk_ops,
 385         .probe          = mmc_blk_probe,
 386 };
 387 #endif /* CONFIG_BLK */
 388
 389 U_BOOT_DRIVER(mmc) = {
 390         .name   = "mmc",
 391         .id     = UCLASS_MMC,
 392 };
 393
 394 UCLASS_DRIVER(mmc) = {
 395         .id             = UCLASS_MMC,
 396         .name           = "mmc",
 397         .flags          = DM_UC_FLAG_SEQ_ALIAS,
 398         .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv),
 399 };