[people/ms/u-boot.git] / drivers / mmc / pic32_sdhci.c

/*
 * Support of SDHCI for Microchip PIC32 SoC.
 *
 * Copyright (C) 2015 Microchip Technology Inc.
 * Andrei Pistirica <andrei.pistirica@microchip.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <dm.h>
#include <common.h>
#include <sdhci.h>
#include <asm/errno.h>
#include <mach/pic32.h>

DECLARE_GLOBAL_DATA_PTR;

static int pic32_sdhci_probe(struct udevice *dev)
{
	struct sdhci_host *host = dev_get_priv(dev);
	const void *fdt = gd->fdt_blob;
	u32 f_min_max[2];
	fdt_addr_t addr;
	fdt_size_t size;
	int ret;

	addr = fdtdec_get_addr_size(fdt, dev->of_offset, "reg", &size);
	if (addr == FDT_ADDR_T_NONE)
		return -EINVAL;

	host->ioaddr	= ioremap(addr, size);
	host->name	= dev->name;
	host->quirks	= SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_NO_CD;
	host->bus_width	= fdtdec_get_int(gd->fdt_blob, dev->of_offset,
					"bus-width", 4);

	ret = fdtdec_get_int_array(gd->fdt_blob, dev->of_offset,
				   "clock-freq-min-max", f_min_max, 2);
	if (ret) {
		printf("sdhci: clock-freq-min-max not found\n");
		return ret;
	}

	ret = add_sdhci(host, f_min_max[1], f_min_max[0]);
	if (ret)
		return ret;
	host->mmc->dev = dev;

	return 0;
}

static const struct udevice_id pic32_sdhci_ids[] = {
	{ .compatible = "microchip,pic32mzda-sdhci" },
	{ }
};

U_BOOT_DRIVER(pic32_sdhci_drv) = {
	.name			= "pic32_sdhci",
	.id			= UCLASS_MMC,
	.of_match		= pic32_sdhci_ids,
	.probe			= pic32_sdhci_probe,
	.priv_auto_alloc_size	= sizeof(struct sdhci_host),
};
Commit	Line	Data
102142c9 AP	1	/*
	2	* Support of SDHCI for Microchip PIC32 SoC.
	3	*
	4	* Copyright (C) 2015 Microchip Technology Inc.
	5	* Andrei Pistirica <andrei.pistirica@microchip.com>
	6	*
	7	* SPDX-License-Identifier: GPL-2.0+
	8	*/
	9
	10	#include <dm.h>
	11	#include <common.h>
	12	#include <sdhci.h>
	13	#include <asm/errno.h>
	14	#include <mach/pic32.h>
	15
	16	DECLARE_GLOBAL_DATA_PTR;
	17
	18	static int pic32_sdhci_probe(struct udevice *dev)
	19	{
	20	struct sdhci_host *host = dev_get_priv(dev);
	21	const void *fdt = gd->fdt_blob;
	22	u32 f_min_max[2];
	23	fdt_addr_t addr;
	24	fdt_size_t size;
	25	int ret;
	26
	27	addr = fdtdec_get_addr_size(fdt, dev->of_offset, "reg", &size);
	28	if (addr == FDT_ADDR_T_NONE)
	29	return -EINVAL;
	30
	31	host->ioaddr = ioremap(addr, size);
cacd1d2f	32	host->name = dev->name;
102142c9 AP	33	host->quirks = SDHCI_QUIRK_NO_HISPD_BIT \| SDHCI_QUIRK_NO_CD;
	34	host->bus_width = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
	35	"bus-width", 4);
	36
	37	ret = fdtdec_get_int_array(gd->fdt_blob, dev->of_offset,
	38	"clock-freq-min-max", f_min_max, 2);
	39	if (ret) {
	40	printf("sdhci: clock-freq-min-max not found\n");
	41	return ret;
	42	}
	43
cffe5d86 SG	44	ret = add_sdhci(host, f_min_max[1], f_min_max[0]);
	45	if (ret)
	46	return ret;
	47	host->mmc->dev = dev;
	48
	49	return 0;
102142c9 AP	50	}
	51
	52	static const struct udevice_id pic32_sdhci_ids[] = {
	53	{ .compatible = "microchip,pic32mzda-sdhci" },
	54	{ }
	55	};
	56
	57	U_BOOT_DRIVER(pic32_sdhci_drv) = {
	58	.name = "pic32_sdhci",
	59	.id = UCLASS_MMC,
	60	.of_match = pic32_sdhci_ids,
	61	.probe = pic32_sdhci_probe,
	62	.priv_auto_alloc_size = sizeof(struct sdhci_host),
	63	};