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[people/ms/u-boot.git] / drivers / mmc / rockchip_sdhci.c
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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
19struct rockchip_sdhc_plat {
20 struct mmc_config cfg;
21 struct mmc mmc;
22};
23
24struct rockchip_sdhc {
25 struct sdhci_host host;
26 void *base;
27};
28
29static 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;
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37 host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;
38
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39 ret = sdhci_setup_cfg(&plat->cfg, host, CONFIG_ROCKCHIP_SDHCI_MAX_FREQ,
40 EMMC_MIN_FREQ);
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41
42 host->mmc = &plat->mmc;
43 if (ret)
44 return ret;
45 host->mmc->priv = &prv->host;
46 host->mmc->dev = dev;
47 upriv->mmc = host->mmc;
48
49 return sdhci_probe(dev);
50}
51
52static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev)
53{
54 struct sdhci_host *host = dev_get_priv(dev);
55
56 host->name = dev->name;
57 host->ioaddr = dev_get_addr_ptr(dev);
58
59 return 0;
60}
61
62static int rockchip_sdhci_bind(struct udevice *dev)
63{
64 struct rockchip_sdhc_plat *plat = dev_get_platdata(dev);
65 int ret;
66
67 ret = sdhci_bind(dev, &plat->mmc, &plat->cfg);
68 if (ret)
69 return ret;
70
71 return 0;
72}
73
74static const struct udevice_id arasan_sdhci_ids[] = {
75 { .compatible = "arasan,sdhci-5.1" },
76 { }
77};
78
79U_BOOT_DRIVER(arasan_sdhci_drv) = {
80 .name = "arasan_sdhci",
81 .id = UCLASS_MMC,
82 .of_match = arasan_sdhci_ids,
83 .ofdata_to_platdata = arasan_sdhci_ofdata_to_platdata,
84 .ops = &sdhci_ops,
85 .bind = rockchip_sdhci_bind,
86 .probe = arasan_sdhci_probe,
87 .priv_auto_alloc_size = sizeof(struct rockchip_sdhc),
88 .platdata_auto_alloc_size = sizeof(struct rockchip_sdhc_plat),
89};