[people/ms/u-boot.git] / drivers / mmc / rockchip_sdhci.c

/*
 * (C) Copyright 2016 Fuzhou Rockchip Electronics Co., Ltd
 *
 * Rockchip SD Host Controller Interface
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <dm.h>
#include <fdtdec.h>
#include <libfdt.h>
#include <malloc.h>
#include <sdhci.h>

/* 400KHz is max freq for card ID etc. Use that as min */
#define EMMC_MIN_FREQ	400000

struct rockchip_sdhc_plat {
	struct mmc_config cfg;
	struct mmc mmc;
};

struct rockchip_sdhc {
	struct sdhci_host host;
	void *base;
};

static int arasan_sdhci_probe(struct udevice *dev)
{
	struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
	struct rockchip_sdhc_plat *plat = dev_get_platdata(dev);
	struct rockchip_sdhc *prv = dev_get_priv(dev);
	struct sdhci_host *host = &prv->host;
	int ret;

	host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;

	ret = sdhci_setup_cfg(&plat->cfg, host, CONFIG_ROCKCHIP_SDHCI_MAX_FREQ,
			EMMC_MIN_FREQ);

	host->mmc = &plat->mmc;
	if (ret)
		return ret;
	host->mmc->priv = &prv->host;
	host->mmc->dev = dev;
	upriv->mmc = host->mmc;

	return sdhci_probe(dev);
}

static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev)
{
	struct sdhci_host *host = dev_get_priv(dev);

	host->name = dev->name;
	host->ioaddr = dev_get_addr_ptr(dev);

	return 0;
}

static int rockchip_sdhci_bind(struct udevice *dev)
{
	struct rockchip_sdhc_plat *plat = dev_get_platdata(dev);
	int ret;

	ret = sdhci_bind(dev, &plat->mmc, &plat->cfg);
	if (ret)
		return ret;

	return 0;
}

static const struct udevice_id arasan_sdhci_ids[] = {
	{ .compatible = "arasan,sdhci-5.1" },
	{ }
};

U_BOOT_DRIVER(arasan_sdhci_drv) = {
	.name		= "arasan_sdhci",
	.id		= UCLASS_MMC,
	.of_match	= arasan_sdhci_ids,
	.ofdata_to_platdata = arasan_sdhci_ofdata_to_platdata,
	.ops		= &sdhci_ops,
	.bind		= rockchip_sdhci_bind,
	.probe		= arasan_sdhci_probe,
	.priv_auto_alloc_size = sizeof(struct rockchip_sdhc),
	.platdata_auto_alloc_size = sizeof(struct rockchip_sdhc_plat),
};
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;
79c83065	36
79c83065 KY	37	host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;
79c83065 KY	38
14bed52d JC	39	ret = sdhci_setup_cfg(&plat->cfg, host, CONFIG_ROCKCHIP_SDHCI_MAX_FREQ,
14bed52d JC	40	EMMC_MIN_FREQ);
79c83065 KY	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
	52	static 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
	62	static 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
	74	static const struct udevice_id arasan_sdhci_ids[] = {
	75	{ .compatible = "arasan,sdhci-5.1" },
	76	{ }
	77	};
	78
	79	U_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	};