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 <dm/root.h>
  14 #include "mmc_private.h"
  15
  16 DECLARE_GLOBAL_DATA_PTR;
  17
  18 int dm_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
  19                     struct mmc_data *data)
  20 {
  21         struct mmc *mmc = mmc_get_mmc_dev(dev);
  22         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  23         int ret;
  24
  25         mmmc_trace_before_send(mmc, cmd);
  26         if (ops->send_cmd)
  27                 ret = ops->send_cmd(dev, cmd, data);
  28         else
  29                 ret = -ENOSYS;
  30         mmmc_trace_after_send(mmc, cmd, ret);
  31
  32         return ret;
  33 }
  34
  35 int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
  36 {
  37         return dm_mmc_send_cmd(mmc->dev, cmd, data);
  38 }
  39
  40 int dm_mmc_set_ios(struct udevice *dev)
  41 {
  42         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  43
  44         if (!ops->set_ios)
  45                 return -ENOSYS;
  46         return ops->set_ios(dev);
  47 }
  48
  49 int mmc_set_ios(struct mmc *mmc)
  50 {
  51         return dm_mmc_set_ios(mmc->dev);
  52 }
  53
  54 void dm_mmc_send_init_stream(struct udevice *dev)
  55 {
  56         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  57
  58         if (ops->send_init_stream)
  59                 ops->send_init_stream(dev);
  60 }
  61
  62 void mmc_send_init_stream(struct mmc *mmc)
  63 {
  64         dm_mmc_send_init_stream(mmc->dev);
  65 }
  66
  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
  81 int dm_mmc_get_wp(struct udevice *dev)
  82 {
  83         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  84
  85         if (!ops->get_wp)
  86                 return -ENOSYS;
  87         return ops->get_wp(dev);
  88 }
  89
  90 int mmc_getwp(struct mmc *mmc)
  91 {
  92         return dm_mmc_get_wp(mmc->dev);
  93 }
  94
  95 int dm_mmc_get_cd(struct udevice *dev)
  96 {
  97         struct dm_mmc_ops *ops = mmc_get_ops(dev);
  98
  99         if (!ops->get_cd)
 100                 return -ENOSYS;
 101         return ops->get_cd(dev);
 102 }
 103
 104 int mmc_getcd(struct mmc *mmc)
 105 {
 106         return dm_mmc_get_cd(mmc->dev);
 107 }
 108
 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
 123 int mmc_of_parse(const void *fdt, int node, struct mmc_config *cfg)
 124 {
 125         int val;
 126
 127         val = fdtdec_get_int(fdt, node, "bus-width", 1);
 128
 129         switch (val) {
 130         case 0x8:
 131                 cfg->host_caps |= MMC_MODE_8BIT;
 132                 /* fall through */
 133         case 0x4:
 134                 cfg->host_caps |= MMC_MODE_4BIT;
 135                 /* fall through */
 136         case 0x1:
 137                 cfg->host_caps |= MMC_MODE_1BIT;
 138                 break;
 139         default:
 140                 printf("error: %s invalid bus-width property %d\n",
 141                        fdt_get_name(fdt, node, NULL), val);
 142                 return -ENOENT;
 143         }
 144
 145         cfg->f_max = fdtdec_get_int(fdt, node, "max-frequency", 52000000);
 146
 147         if (fdtdec_get_bool(fdt, node, "cap-sd-highspeed"))
 148                 cfg->host_caps |= MMC_CAP(SD_HS);
 149         if (fdtdec_get_bool(fdt, node, "cap-mmc-highspeed"))
 150                 cfg->host_caps |= MMC_CAP(MMC_HS);
 151         if (fdtdec_get_bool(fdt, node, "sd-uhs-sdr12"))
 152                 cfg->host_caps |= MMC_CAP(UHS_SDR12);
 153         if (fdtdec_get_bool(fdt, node, "sd-uhs-sdr25"))
 154                 cfg->host_caps |= MMC_CAP(UHS_SDR25);
 155         if (fdtdec_get_bool(fdt, node, "sd-uhs-sdr50"))
 156                 cfg->host_caps |= MMC_CAP(UHS_SDR50);
 157         if (fdtdec_get_bool(fdt, node, "sd-uhs-sdr104"))
 158                 cfg->host_caps |= MMC_CAP(UHS_SDR104);
 159         if (fdtdec_get_bool(fdt, node, "sd-uhs-ddr50"))
 160                 cfg->host_caps |= MMC_CAP(UHS_DDR50);
 161         if (fdtdec_get_bool(fdt, node, "mmc-ddr-1_8v"))
 162                 cfg->host_caps |= MMC_CAP(MMC_DDR_52);
 163         if (fdtdec_get_bool(fdt, node, "mmc-hs200-1_8v"))
 164                 cfg->host_caps |= MMC_CAP(MMC_HS_200);
 165
 166         return 0;
 167 }
 168
 169 struct mmc *mmc_get_mmc_dev(struct udevice *dev)
 170 {
 171         struct mmc_uclass_priv *upriv;
 172
 173         if (!device_active(dev))
 174                 return NULL;
 175         upriv = dev_get_uclass_priv(dev);
 176         return upriv->mmc;
 177 }
 178
 179 #if CONFIG_IS_ENABLED(BLK)
 180 struct mmc *find_mmc_device(int dev_num)
 181 {
 182         struct udevice *dev, *mmc_dev;
 183         int ret;
 184
 185         ret = blk_find_device(IF_TYPE_MMC, dev_num, &dev);
 186
 187         if (ret) {
 188 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 189                 printf("MMC Device %d not found\n", dev_num);
 190 #endif
 191                 return NULL;
 192         }
 193
 194         mmc_dev = dev_get_parent(dev);
 195
 196         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 197
 198         return mmc;
 199 }
 200
 201 int get_mmc_num(void)
 202 {
 203         return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0);
 204 }
 205
 206 int mmc_get_next_devnum(void)
 207 {
 208         return blk_find_max_devnum(IF_TYPE_MMC);
 209 }
 210
 211 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
 212 {
 213         struct blk_desc *desc;
 214         struct udevice *dev;
 215
 216         device_find_first_child(mmc->dev, &dev);
 217         if (!dev)
 218                 return NULL;
 219         desc = dev_get_uclass_platdata(dev);
 220
 221         return desc;
 222 }
 223
 224 void mmc_do_preinit(void)
 225 {
 226         struct udevice *dev;
 227         struct uclass *uc;
 228         int ret;
 229
 230         ret = uclass_get(UCLASS_MMC, &uc);
 231         if (ret)
 232                 return;
 233         uclass_foreach_dev(dev, uc) {
 234                 struct mmc *m = mmc_get_mmc_dev(dev);
 235
 236                 if (!m)
 237                         continue;
 238 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
 239                 mmc_set_preinit(m, 1);
 240 #endif
 241                 if (m->preinit)
 242                         mmc_start_init(m);
 243         }
 244 }
 245
 246 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 247 void print_mmc_devices(char separator)
 248 {
 249         struct udevice *dev;
 250         char *mmc_type;
 251         bool first = true;
 252
 253         for (uclass_first_device(UCLASS_MMC, &dev);
 254              dev;
 255              uclass_next_device(&dev), first = false) {
 256                 struct mmc *m = mmc_get_mmc_dev(dev);
 257
 258                 if (!first) {
 259                         printf("%c", separator);
 260                         if (separator != '\n')
 261                                 puts(" ");
 262                 }
 263                 if (m->has_init)
 264                         mmc_type = IS_SD(m) ? "SD" : "eMMC";
 265                 else
 266                         mmc_type = NULL;
 267
 268                 printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum);
 269                 if (mmc_type)
 270                         printf(" (%s)", mmc_type);
 271         }
 272
 273         printf("\n");
 274 }
 275
 276 #else
 277 void print_mmc_devices(char separator) { }
 278 #endif
 279
 280 int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg)
 281 {
 282         struct blk_desc *bdesc;
 283         struct udevice *bdev;
 284         int ret, devnum = -1;
 285
 286         if (!mmc_get_ops(dev))
 287                 return -ENOSYS;
 288 #ifndef CONFIG_SPL_BUILD
 289         /* Use the fixed index with aliase node's index */
 290         ret = dev_read_alias_seq(dev, &devnum);
 291         debug("%s: alias ret=%d, devnum=%d\n", __func__, ret, devnum);
 292 #endif
 293
 294         ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC,
 295                         devnum, 512, 0, &bdev);
 296         if (ret) {
 297                 debug("Cannot create block device\n");
 298                 return ret;
 299         }
 300         bdesc = dev_get_uclass_platdata(bdev);
 301         mmc->cfg = cfg;
 302         mmc->priv = dev;
 303
 304         /* the following chunk was from mmc_register() */
 305
 306         /* Setup dsr related values */
 307         mmc->dsr_imp = 0;
 308         mmc->dsr = 0xffffffff;
 309         /* Setup the universal parts of the block interface just once */
 310         bdesc->removable = 1;
 311
 312         /* setup initial part type */
 313         bdesc->part_type = cfg->part_type;
 314         mmc->dev = dev;
 315
 316         return 0;
 317 }
 318
 319 int mmc_unbind(struct udevice *dev)
 320 {
 321         struct udevice *bdev;
 322
 323         device_find_first_child(dev, &bdev);
 324         if (bdev) {
 325                 device_remove(bdev, DM_REMOVE_NORMAL);
 326                 device_unbind(bdev);
 327         }
 328
 329         return 0;
 330 }
 331
 332 static int mmc_select_hwpart(struct udevice *bdev, int hwpart)
 333 {
 334         struct udevice *mmc_dev = dev_get_parent(bdev);
 335         struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
 336         struct blk_desc *desc = dev_get_uclass_platdata(bdev);
 337
 338         if (desc->hwpart == hwpart)
 339                 return 0;
 340
 341         if (mmc->part_config == MMCPART_NOAVAILABLE)
 342                 return -EMEDIUMTYPE;
 343
 344         return mmc_switch_part(mmc, hwpart);
 345 }
 346
 347 static int mmc_blk_probe(struct udevice *dev)
 348 {
 349         struct udevice *mmc_dev = dev_get_parent(dev);
 350         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
 351         struct mmc *mmc = upriv->mmc;
 352         int ret;
 353
 354         ret = mmc_init(mmc);
 355         if (ret) {
 356                 debug("%s: mmc_init() failed (err=%d)\n", __func__, ret);
 357                 return ret;
 358         }
 359
 360         return 0;
 361 }
 362
 363 static const struct blk_ops mmc_blk_ops = {
 364         .read   = mmc_bread,
 365 #ifndef CONFIG_SPL_BUILD
 366         .write  = mmc_bwrite,
 367         .erase  = mmc_berase,
 368 #endif
 369         .select_hwpart  = mmc_select_hwpart,
 370 };
 371
 372 U_BOOT_DRIVER(mmc_blk) = {
 373         .name           = "mmc_blk",
 374         .id             = UCLASS_BLK,
 375         .ops            = &mmc_blk_ops,
 376         .probe          = mmc_blk_probe,
 377 };
 378 #endif /* CONFIG_BLK */
 379
 380 U_BOOT_DRIVER(mmc) = {
 381         .name   = "mmc",
 382         .id     = UCLASS_MMC,
 383 };
 384
 385 UCLASS_DRIVER(mmc) = {
 386         .id             = UCLASS_MMC,
 387         .name           = "mmc",
 388         .flags          = DM_UC_FLAG_SEQ_ALIAS,
 389         .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv),
 390 };