1 /* 2 * (C) Copyright 2013 - 2015 Xilinx, Inc. 3 * 4 * Xilinx Zynq SD Host Controller Interface 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9 #include <common.h> 10 #include <dm.h> 11 #include <fdtdec.h> 12 #include <libfdt.h> 13 #include <malloc.h> 14 #include <sdhci.h> 15 16 #ifndef CONFIG_ZYNQ_SDHCI_MIN_FREQ 17 # define CONFIG_ZYNQ_SDHCI_MIN_FREQ 0 18 #endif 19 20 struct arasan_sdhci_plat { 21 struct mmc_config cfg; 22 struct mmc mmc; 23 }; 24 25 static int arasan_sdhci_probe(struct udevice *dev) 26 { 27 struct arasan_sdhci_plat *plat = dev_get_platdata(dev); 28 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); 29 struct sdhci_host *host = dev_get_priv(dev); 30 u32 caps; 31 int ret; 32 33 host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD | 34 SDHCI_QUIRK_BROKEN_R1B; 35 36 #ifdef CONFIG_ZYNQ_HISPD_BROKEN 37 host->quirks |= SDHCI_QUIRK_NO_HISPD_BIT; 38 #endif 39 40 host->version = sdhci_readw(host, SDHCI_HOST_VERSION); 41 42 caps = sdhci_readl(host, SDHCI_CAPABILITIES); 43 ret = sdhci_setup_cfg(&plat->cfg, host, CONFIG_ZYNQ_SDHCI_MAX_FREQ, 44 CONFIG_ZYNQ_SDHCI_MIN_FREQ); 45 host->mmc = &plat->mmc; 46 if (ret) 47 return ret; 48 host->mmc->priv = host; 49 host->mmc->dev = dev; 50 upriv->mmc = host->mmc; 51 52 return sdhci_probe(dev); 53 } 54 55 static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev) 56 { 57 struct sdhci_host *host = dev_get_priv(dev); 58 59 host->name = dev->name; 60 host->ioaddr = (void *)dev_get_addr(dev); 61 62 return 0; 63 } 64 65 static int arasan_sdhci_bind(struct udevice *dev) 66 { 67 struct arasan_sdhci_plat *plat = dev_get_platdata(dev); 68 int ret; 69 70 ret = sdhci_bind(dev, &plat->mmc, &plat->cfg); 71 if (ret) 72 return ret; 73 74 return 0; 75 } 76 77 static const struct udevice_id arasan_sdhci_ids[] = { 78 { .compatible = "arasan,sdhci-8.9a" }, 79 { } 80 }; 81 82 U_BOOT_DRIVER(arasan_sdhci_drv) = { 83 .name = "arasan_sdhci", 84 .id = UCLASS_MMC, 85 .of_match = arasan_sdhci_ids, 86 .ofdata_to_platdata = arasan_sdhci_ofdata_to_platdata, 87 .ops = &sdhci_ops, 88 .bind = arasan_sdhci_bind, 89 .probe = arasan_sdhci_probe, 90 .priv_auto_alloc_size = sizeof(struct sdhci_host), 91 .platdata_auto_alloc_size = sizeof(struct arasan_sdhci_plat), 92 }; 93