1e7ecf7cbSSimon Glass /* 2e7ecf7cbSSimon Glass * Copyright (C) 2015 Google, Inc 3e7ecf7cbSSimon Glass * Written by Simon Glass <sjg@chromium.org> 4e7ecf7cbSSimon Glass * 5e7ecf7cbSSimon Glass * SPDX-License-Identifier: GPL-2.0+ 6e7ecf7cbSSimon Glass */ 7e7ecf7cbSSimon Glass 8e7ecf7cbSSimon Glass #include <common.h> 9e7ecf7cbSSimon Glass #include <mmc.h> 10e7ecf7cbSSimon Glass #include <dm.h> 11*eede897eSSimon Glass #include <dm/device-internal.h> 12e7ecf7cbSSimon Glass #include <dm/lists.h> 13e7ecf7cbSSimon Glass #include <dm/root.h> 14*eede897eSSimon Glass #include "mmc_private.h" 15e7ecf7cbSSimon Glass 16e7ecf7cbSSimon Glass struct mmc *mmc_get_mmc_dev(struct udevice *dev) 17e7ecf7cbSSimon Glass { 18e7ecf7cbSSimon Glass struct mmc_uclass_priv *upriv; 19e7ecf7cbSSimon Glass 20e7ecf7cbSSimon Glass if (!device_active(dev)) 21e7ecf7cbSSimon Glass return NULL; 22e7ecf7cbSSimon Glass upriv = dev_get_uclass_priv(dev); 23e7ecf7cbSSimon Glass return upriv->mmc; 24e7ecf7cbSSimon Glass } 25e7ecf7cbSSimon Glass 268ef761edSSimon Glass #ifdef CONFIG_BLK 278ef761edSSimon Glass struct mmc *find_mmc_device(int dev_num) 288ef761edSSimon Glass { 298ef761edSSimon Glass struct udevice *dev, *mmc_dev; 308ef761edSSimon Glass int ret; 318ef761edSSimon Glass 328ef761edSSimon Glass ret = blk_get_device(IF_TYPE_MMC, dev_num, &dev); 338ef761edSSimon Glass 348ef761edSSimon Glass if (ret) { 358ef761edSSimon Glass #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 368ef761edSSimon Glass printf("MMC Device %d not found\n", dev_num); 378ef761edSSimon Glass #endif 388ef761edSSimon Glass return NULL; 398ef761edSSimon Glass } 408ef761edSSimon Glass 418ef761edSSimon Glass mmc_dev = dev_get_parent(dev); 428ef761edSSimon Glass 438ef761edSSimon Glass return mmc_get_mmc_dev(mmc_dev); 448ef761edSSimon Glass } 458ef761edSSimon Glass 468ef761edSSimon Glass int get_mmc_num(void) 478ef761edSSimon Glass { 488ef761edSSimon Glass return max(blk_find_max_devnum(IF_TYPE_MMC), 0); 498ef761edSSimon Glass } 508ef761edSSimon Glass 518ef761edSSimon Glass int mmc_get_next_devnum(void) 528ef761edSSimon Glass { 538ef761edSSimon Glass int ret; 548ef761edSSimon Glass 558ef761edSSimon Glass ret = get_mmc_num(); 568ef761edSSimon Glass if (ret < 0) 578ef761edSSimon Glass return ret; 588ef761edSSimon Glass 598ef761edSSimon Glass return ret + 1; 608ef761edSSimon Glass } 618ef761edSSimon Glass 628ef761edSSimon Glass struct blk_desc *mmc_get_blk_desc(struct mmc *mmc) 638ef761edSSimon Glass { 648ef761edSSimon Glass struct blk_desc *desc; 658ef761edSSimon Glass struct udevice *dev; 668ef761edSSimon Glass 678ef761edSSimon Glass device_find_first_child(mmc->dev, &dev); 688ef761edSSimon Glass if (!dev) 698ef761edSSimon Glass return NULL; 708ef761edSSimon Glass desc = dev_get_uclass_platdata(dev); 718ef761edSSimon Glass 728ef761edSSimon Glass return desc; 738ef761edSSimon Glass } 748ef761edSSimon Glass 758ef761edSSimon Glass void mmc_do_preinit(void) 768ef761edSSimon Glass { 778ef761edSSimon Glass struct udevice *dev; 788ef761edSSimon Glass struct uclass *uc; 798ef761edSSimon Glass int ret; 808ef761edSSimon Glass 818ef761edSSimon Glass ret = uclass_get(UCLASS_MMC, &uc); 828ef761edSSimon Glass if (ret) 838ef761edSSimon Glass return; 848ef761edSSimon Glass uclass_foreach_dev(dev, uc) { 858ef761edSSimon Glass struct mmc *m = mmc_get_mmc_dev(dev); 868ef761edSSimon Glass 878ef761edSSimon Glass if (!m) 888ef761edSSimon Glass continue; 898ef761edSSimon Glass #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT 908ef761edSSimon Glass mmc_set_preinit(m, 1); 918ef761edSSimon Glass #endif 928ef761edSSimon Glass if (m->preinit) 938ef761edSSimon Glass mmc_start_init(m); 948ef761edSSimon Glass } 958ef761edSSimon Glass } 968ef761edSSimon Glass 978ef761edSSimon Glass #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) 988ef761edSSimon Glass void print_mmc_devices(char separator) 998ef761edSSimon Glass { 1008ef761edSSimon Glass struct udevice *dev; 1018ef761edSSimon Glass char *mmc_type; 1028ef761edSSimon Glass bool first = true; 1038ef761edSSimon Glass 1048ef761edSSimon Glass for (uclass_first_device(UCLASS_MMC, &dev); 1058ef761edSSimon Glass dev; 1068ef761edSSimon Glass uclass_next_device(&dev)) { 1078ef761edSSimon Glass struct mmc *m = mmc_get_mmc_dev(dev); 1088ef761edSSimon Glass 1098ef761edSSimon Glass if (!first) { 1108ef761edSSimon Glass printf("%c", separator); 1118ef761edSSimon Glass if (separator != '\n') 1128ef761edSSimon Glass puts(" "); 1138ef761edSSimon Glass } 1148ef761edSSimon Glass if (m->has_init) 1158ef761edSSimon Glass mmc_type = IS_SD(m) ? "SD" : "eMMC"; 1168ef761edSSimon Glass else 1178ef761edSSimon Glass mmc_type = NULL; 1188ef761edSSimon Glass 1198ef761edSSimon Glass printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum); 1208ef761edSSimon Glass if (mmc_type) 1218ef761edSSimon Glass printf(" (%s)", mmc_type); 1228ef761edSSimon Glass } 1238ef761edSSimon Glass 1248ef761edSSimon Glass printf("\n"); 1258ef761edSSimon Glass } 1268ef761edSSimon Glass 1278ef761edSSimon Glass #else 1288ef761edSSimon Glass void print_mmc_devices(char separator) { } 1298ef761edSSimon Glass #endif 130*eede897eSSimon Glass 131*eede897eSSimon Glass int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg) 132*eede897eSSimon Glass { 133*eede897eSSimon Glass struct blk_desc *bdesc; 134*eede897eSSimon Glass struct udevice *bdev; 135*eede897eSSimon Glass int ret; 136*eede897eSSimon Glass 137*eede897eSSimon Glass ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC, -1, 512, 138*eede897eSSimon Glass 0, &bdev); 139*eede897eSSimon Glass if (ret) { 140*eede897eSSimon Glass debug("Cannot create block device\n"); 141*eede897eSSimon Glass return ret; 142*eede897eSSimon Glass } 143*eede897eSSimon Glass bdesc = dev_get_uclass_platdata(bdev); 144*eede897eSSimon Glass mmc->cfg = cfg; 145*eede897eSSimon Glass mmc->priv = dev; 146*eede897eSSimon Glass 147*eede897eSSimon Glass /* the following chunk was from mmc_register() */ 148*eede897eSSimon Glass 149*eede897eSSimon Glass /* Setup dsr related values */ 150*eede897eSSimon Glass mmc->dsr_imp = 0; 151*eede897eSSimon Glass mmc->dsr = 0xffffffff; 152*eede897eSSimon Glass /* Setup the universal parts of the block interface just once */ 153*eede897eSSimon Glass bdesc->removable = 1; 154*eede897eSSimon Glass 155*eede897eSSimon Glass /* setup initial part type */ 156*eede897eSSimon Glass bdesc->part_type = cfg->part_type; 157*eede897eSSimon Glass mmc->dev = dev; 158*eede897eSSimon Glass 159*eede897eSSimon Glass return 0; 160*eede897eSSimon Glass } 161*eede897eSSimon Glass 162*eede897eSSimon Glass int mmc_unbind(struct udevice *dev) 163*eede897eSSimon Glass { 164*eede897eSSimon Glass struct udevice *bdev; 165*eede897eSSimon Glass 166*eede897eSSimon Glass device_find_first_child(dev, &bdev); 167*eede897eSSimon Glass if (bdev) { 168*eede897eSSimon Glass device_remove(bdev); 169*eede897eSSimon Glass device_unbind(bdev); 170*eede897eSSimon Glass } 171*eede897eSSimon Glass 172*eede897eSSimon Glass return 0; 173*eede897eSSimon Glass } 174*eede897eSSimon Glass 175*eede897eSSimon Glass static int mmc_select_hwpart(struct udevice *bdev, int hwpart) 176*eede897eSSimon Glass { 177*eede897eSSimon Glass struct udevice *mmc_dev = dev_get_parent(bdev); 178*eede897eSSimon Glass struct mmc *mmc = mmc_get_mmc_dev(mmc_dev); 179*eede897eSSimon Glass struct blk_desc *desc = dev_get_uclass_platdata(bdev); 180*eede897eSSimon Glass int ret; 181*eede897eSSimon Glass 182*eede897eSSimon Glass if (desc->hwpart == hwpart) 183*eede897eSSimon Glass return 0; 184*eede897eSSimon Glass 185*eede897eSSimon Glass if (mmc->part_config == MMCPART_NOAVAILABLE) 186*eede897eSSimon Glass return -EMEDIUMTYPE; 187*eede897eSSimon Glass 188*eede897eSSimon Glass ret = mmc_switch_part(mmc, hwpart); 189*eede897eSSimon Glass if (ret) 190*eede897eSSimon Glass return ret; 191*eede897eSSimon Glass 192*eede897eSSimon Glass return 0; 193*eede897eSSimon Glass } 194*eede897eSSimon Glass 195*eede897eSSimon Glass static const struct blk_ops mmc_blk_ops = { 196*eede897eSSimon Glass .read = mmc_bread, 197*eede897eSSimon Glass #ifndef CONFIG_SPL_BUILD 198*eede897eSSimon Glass .write = mmc_bwrite, 199*eede897eSSimon Glass #endif 200*eede897eSSimon Glass .select_hwpart = mmc_select_hwpart, 201*eede897eSSimon Glass }; 202*eede897eSSimon Glass 203*eede897eSSimon Glass U_BOOT_DRIVER(mmc_blk) = { 204*eede897eSSimon Glass .name = "mmc_blk", 205*eede897eSSimon Glass .id = UCLASS_BLK, 206*eede897eSSimon Glass .ops = &mmc_blk_ops, 207*eede897eSSimon Glass }; 2088ef761edSSimon Glass #endif /* CONFIG_BLK */ 2098ef761edSSimon Glass 210e7ecf7cbSSimon Glass U_BOOT_DRIVER(mmc) = { 211e7ecf7cbSSimon Glass .name = "mmc", 212e7ecf7cbSSimon Glass .id = UCLASS_MMC, 213e7ecf7cbSSimon Glass }; 214e7ecf7cbSSimon Glass 215e7ecf7cbSSimon Glass UCLASS_DRIVER(mmc) = { 216e7ecf7cbSSimon Glass .id = UCLASS_MMC, 217e7ecf7cbSSimon Glass .name = "mmc", 218e7ecf7cbSSimon Glass .flags = DM_UC_FLAG_SEQ_ALIAS, 219e7ecf7cbSSimon Glass .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv), 220e7ecf7cbSSimon Glass }; 221