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 #ifdef CONFIG_DM_MMC_OPS 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 int dm_mmc_get_wp(struct udevice *dev) 54 { 55 struct dm_mmc_ops *ops = mmc_get_ops(dev); 56 57 if (!ops->get_wp) 58 return -ENOSYS; 59 return ops->get_wp(dev); 60 } 61 62 int mmc_getwp(struct mmc *mmc) 63 { 64 return dm_mmc_get_wp(mmc->dev); 65 } 66 67 int dm_mmc_get_cd(struct udevice *dev) 68 { 69 struct dm_mmc_ops *ops = mmc_get_ops(dev); 70 71 if (!ops->get_cd) 72 return -ENOSYS; 73 return ops->get_cd(dev); 74 } 75 76 int mmc_getcd(struct mmc *mmc) 77 { 78 return dm_mmc_get_cd(mmc->dev); 79 } 80 #endif 81 82 struct mmc *mmc_get_mmc_dev(struct udevice *dev) 83 { 84 struct mmc_uclass_priv *upriv; 85 86 if (!device_active(dev)) 87 return NULL; 88 upriv = dev_get_uclass_priv(dev); 89 return upriv->mmc; 90 } 91 92 #ifdef CONFIG_BLK 93 struct mmc *find_mmc_device(int dev_num) 94 { 95 struct udevice *dev, *mmc_dev; 96 int ret; 97 98 ret = blk_get_device(IF_TYPE_MMC, dev_num, &dev); 99 100 if (ret) { 101 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 102 printf("MMC Device %d not found\n", dev_num); 103 #endif 104 return NULL; 105 } 106 107 mmc_dev = dev_get_parent(dev); 108 109 return mmc_get_mmc_dev(mmc_dev); 110 } 111 112 int get_mmc_num(void) 113 { 114 return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0); 115 } 116 117 int mmc_get_next_devnum(void) 118 { 119 int ret; 120 121 ret = blk_find_max_devnum(IF_TYPE_MMC); 122 if (ret < 0) 123 return ret; 124 125 return ret; 126 } 127 128 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc) 129 { 130 struct blk_desc *desc; 131 struct udevice *dev; 132 133 device_find_first_child(mmc->dev, &dev); 134 if (!dev) 135 return NULL; 136 desc = dev_get_uclass_platdata(dev); 137 138 return desc; 139 } 140 141 void mmc_do_preinit(void) 142 { 143 struct udevice *dev; 144 struct uclass *uc; 145 int ret; 146 147 ret = uclass_get(UCLASS_MMC, &uc); 148 if (ret) 149 return; 150 uclass_foreach_dev(dev, uc) { 151 struct mmc *m = mmc_get_mmc_dev(dev); 152 153 if (!m) 154 continue; 155 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT 156 mmc_set_preinit(m, 1); 157 #endif 158 if (m->preinit) 159 mmc_start_init(m); 160 } 161 } 162 163 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 164 void print_mmc_devices(char separator) 165 { 166 struct udevice *dev; 167 char *mmc_type; 168 bool first = true; 169 170 for (uclass_first_device(UCLASS_MMC, &dev); 171 dev; 172 uclass_next_device(&dev), first = false) { 173 struct mmc *m = mmc_get_mmc_dev(dev); 174 175 if (!first) { 176 printf("%c", separator); 177 if (separator != '\n') 178 puts(" "); 179 } 180 if (m->has_init) 181 mmc_type = IS_SD(m) ? "SD" : "eMMC"; 182 else 183 mmc_type = NULL; 184 185 printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum); 186 if (mmc_type) 187 printf(" (%s)", mmc_type); 188 } 189 190 printf("\n"); 191 } 192 193 #else 194 void print_mmc_devices(char separator) { } 195 #endif 196 197 int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg) 198 { 199 struct blk_desc *bdesc; 200 struct udevice *bdev; 201 int ret; 202 203 ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC, -1, 512, 204 0, &bdev); 205 if (ret) { 206 debug("Cannot create block device\n"); 207 return ret; 208 } 209 bdesc = dev_get_uclass_platdata(bdev); 210 mmc->cfg = cfg; 211 mmc->priv = dev; 212 213 /* the following chunk was from mmc_register() */ 214 215 /* Setup dsr related values */ 216 mmc->dsr_imp = 0; 217 mmc->dsr = 0xffffffff; 218 /* Setup the universal parts of the block interface just once */ 219 bdesc->removable = 1; 220 221 /* setup initial part type */ 222 bdesc->part_type = cfg->part_type; 223 mmc->dev = dev; 224 225 return 0; 226 } 227 228 int mmc_unbind(struct udevice *dev) 229 { 230 struct udevice *bdev; 231 232 device_find_first_child(dev, &bdev); 233 if (bdev) { 234 device_remove(bdev); 235 device_unbind(bdev); 236 } 237 238 return 0; 239 } 240 241 static int mmc_select_hwpart(struct udevice *bdev, int hwpart) 242 { 243 struct udevice *mmc_dev = dev_get_parent(bdev); 244 struct mmc *mmc = mmc_get_mmc_dev(mmc_dev); 245 struct blk_desc *desc = dev_get_uclass_platdata(bdev); 246 int ret; 247 248 if (desc->hwpart == hwpart) 249 return 0; 250 251 if (mmc->part_config == MMCPART_NOAVAILABLE) 252 return -EMEDIUMTYPE; 253 254 ret = mmc_switch_part(mmc, hwpart); 255 if (ret) 256 return ret; 257 258 return 0; 259 } 260 261 static const struct blk_ops mmc_blk_ops = { 262 .read = mmc_bread, 263 #ifndef CONFIG_SPL_BUILD 264 .write = mmc_bwrite, 265 #endif 266 .select_hwpart = mmc_select_hwpart, 267 }; 268 269 U_BOOT_DRIVER(mmc_blk) = { 270 .name = "mmc_blk", 271 .id = UCLASS_BLK, 272 .ops = &mmc_blk_ops, 273 }; 274 #endif /* CONFIG_BLK */ 275 276 U_BOOT_DRIVER(mmc) = { 277 .name = "mmc", 278 .id = UCLASS_MMC, 279 }; 280 281 UCLASS_DRIVER(mmc) = { 282 .id = UCLASS_MMC, 283 .name = "mmc", 284 .flags = DM_UC_FLAG_SEQ_ALIAS, 285 .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv), 286 }; 287