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 }; 398