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 #if CONFIG_IS_ENABLED(MMC_WRITE) 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 }; 399