projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 79c83065 KY |
1 | /* |
| 2 | * (C) Copyright 2016 Fuzhou Rockchip Electronics Co., Ltd | |
| 3 | * | |
| 4 | * Rockchip 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 | /* 400KHz is max freq for card ID etc. Use that as min */ | |
| 17 | #define EMMC_MIN_FREQ 400000 | |
| 18 | ||
| 19 | struct rockchip_sdhc_plat { | |
| 20 | struct mmc_config cfg; | |
| 21 | struct mmc mmc; | |
| 22 | }; | |
| 23 | ||
| 24 | struct rockchip_sdhc { | |
| 25 | struct sdhci_host host; | |
| 26 | void *base; | |
| 27 | }; | |
| 28 | ||
| 29 | static int arasan_sdhci_probe(struct udevice *dev) | |
| 30 | { | |
| 31 | struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); | |
| 32 | struct rockchip_sdhc_plat *plat = dev_get_platdata(dev); | |
| 33 | struct rockchip_sdhc *prv = dev_get_priv(dev); | |
| 34 | struct sdhci_host *host = &prv->host; | |
| 35 | int ret; | |
| 36 | u32 caps; | |
| 37 | ||
| 38 | host->version = sdhci_readw(host, SDHCI_HOST_VERSION); | |
| 39 | host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD; | |
| 40 | ||
| 41 | caps = sdhci_readl(host, SDHCI_CAPABILITIES); | |
| 42 | ret = sdhci_setup_cfg(&plat->cfg, dev->name, host->bus_width, | |
| 43 | caps, CONFIG_ROCKCHIP_SDHCI_MAX_FREQ, EMMC_MIN_FREQ, | |
| 44 | host->version, host->quirks, 0); | |
| 45 | ||
| 46 | host->mmc = &plat->mmc; | |
| 47 | if (ret) | |
| 48 | return ret; | |
| 49 | host->mmc->priv = &prv->host; | |
| 50 | host->mmc->dev = dev; | |
| 51 | upriv->mmc = host->mmc; | |
| 52 | ||
| 53 | return sdhci_probe(dev); | |
| 54 | } | |
| 55 | ||
| 56 | static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev) | |
| 57 | { | |
| 58 | struct sdhci_host *host = dev_get_priv(dev); | |
| 59 | ||
| 60 | host->name = dev->name; | |
| 61 | host->ioaddr = dev_get_addr_ptr(dev); | |
| 62 | ||
| 63 | return 0; | |
| 64 | } | |
| 65 | ||
| 66 | static int rockchip_sdhci_bind(struct udevice *dev) | |
| 67 | { | |
| 68 | struct rockchip_sdhc_plat *plat = dev_get_platdata(dev); | |
| 69 | int ret; | |
| 70 | ||
| 71 | ret = sdhci_bind(dev, &plat->mmc, &plat->cfg); | |
| 72 | if (ret) | |
| 73 | return ret; | |
| 74 | ||
| 75 | return 0; | |
| 76 | } | |
| 77 | ||
| 78 | static const struct udevice_id arasan_sdhci_ids[] = { | |
| 79 | { .compatible = "arasan,sdhci-5.1" }, | |
| 80 | { } | |
| 81 | }; | |
| 82 | ||
| 83 | U_BOOT_DRIVER(arasan_sdhci_drv) = { | |
| 84 | .name = "arasan_sdhci", | |
| 85 | .id = UCLASS_MMC, | |
| 86 | .of_match = arasan_sdhci_ids, | |
| 87 | .ofdata_to_platdata = arasan_sdhci_ofdata_to_platdata, | |
| 88 | .ops = &sdhci_ops, | |
| 89 | .bind = rockchip_sdhci_bind, | |
| 90 | .probe = arasan_sdhci_probe, | |
| 91 | .priv_auto_alloc_size = sizeof(struct rockchip_sdhc), | |
| 92 | .platdata_auto_alloc_size = sizeof(struct rockchip_sdhc_plat), | |
| 93 | }; |