[linux.git] / drivers / mmc / host / dw_mmc-pltfm.c

/*
 * Synopsys DesignWare Multimedia Card Interface driver
 *
 * Copyright (C) 2009 NXP Semiconductors
 * Copyright (C) 2009, 2010 Imagination Technologies Ltd.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/dw_mmc.h>
#include <linux/of.h>

#include "dw_mmc.h"
#include "dw_mmc-pltfm.h"

static void dw_mci_pltfm_prepare_command(struct dw_mci *host, u32 *cmdr)
{
	*cmdr |= SDMMC_CMD_USE_HOLD_REG;
}

static const struct dw_mci_drv_data rockchip_drv_data = {
	.prepare_command	= dw_mci_pltfm_prepare_command,
};

static const struct dw_mci_drv_data socfpga_drv_data = {
	.prepare_command	= dw_mci_pltfm_prepare_command,
};

int dw_mci_pltfm_register(struct platform_device *pdev,
			  const struct dw_mci_drv_data *drv_data)
{
	struct dw_mci *host;
	struct resource	*regs;

	host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
	if (!host)
		return -ENOMEM;

	host->irq = platform_get_irq(pdev, 0);
	if (host->irq < 0)
		return host->irq;

	host->drv_data = drv_data;
	host->dev = &pdev->dev;
	host->irq_flags = 0;
	host->pdata = pdev->dev.platform_data;

	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	host->regs = devm_ioremap_resource(&pdev->dev, regs);
	if (IS_ERR(host->regs))
		return PTR_ERR(host->regs);

	platform_set_drvdata(pdev, host);
	return dw_mci_probe(host);
}
EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);

#ifdef CONFIG_PM_SLEEP
/*
 * TODO: we should probably disable the clock to the card in the suspend path.
 */
static int dw_mci_pltfm_suspend(struct device *dev)
{
	struct dw_mci *host = dev_get_drvdata(dev);

	return dw_mci_suspend(host);
}

static int dw_mci_pltfm_resume(struct device *dev)
{
	struct dw_mci *host = dev_get_drvdata(dev);

	return dw_mci_resume(host);
}
#else
#define dw_mci_pltfm_suspend	NULL
#define dw_mci_pltfm_resume	NULL
#endif /* CONFIG_PM_SLEEP */

SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);
EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);

static const struct of_device_id dw_mci_pltfm_match[] = {
	{ .compatible = "snps,dw-mshc", },
	{ .compatible = "rockchip,rk2928-dw-mshc",
		.data = &rockchip_drv_data },
	{ .compatible = "altr,socfpga-dw-mshc",
		.data = &socfpga_drv_data },
	{},
};
MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);

static int dw_mci_pltfm_probe(struct platform_device *pdev)
{
	const struct dw_mci_drv_data *drv_data = NULL;
	const struct of_device_id *match;

	if (pdev->dev.of_node) {
		match = of_match_node(dw_mci_pltfm_match, pdev->dev.of_node);
		drv_data = match->data;
	}

	return dw_mci_pltfm_register(pdev, drv_data);
}

int dw_mci_pltfm_remove(struct platform_device *pdev)
{
	struct dw_mci *host = platform_get_drvdata(pdev);

	dw_mci_remove(host);
	return 0;
}
EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);

static struct platform_driver dw_mci_pltfm_driver = {
	.probe		= dw_mci_pltfm_probe,
	.remove		= dw_mci_pltfm_remove,
	.driver		= {
		.name		= "dw_mmc",
		.of_match_table	= dw_mci_pltfm_match,
		.pm		= &dw_mci_pltfm_pmops,
	},
};

module_platform_driver(dw_mci_pltfm_driver);

MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
MODULE_AUTHOR("NXP Semiconductor VietNam");
MODULE_AUTHOR("Imagination Technologies Ltd");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
62ca8034 SH	1	/*
	2	* Synopsys DesignWare Multimedia Card Interface driver
	3	*
	4	* Copyright (C) 2009 NXP Semiconductors
	5	* Copyright (C) 2009, 2010 Imagination Technologies Ltd.
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*/
	12
a3e2cd7f	13	#include <linux/err.h>
62ca8034 SH	14	#include <linux/interrupt.h>
	15	#include <linux/module.h>
	16	#include <linux/io.h>
	17	#include <linux/irq.h>
	18	#include <linux/platform_device.h>
	19	#include <linux/slab.h>
	20	#include <linux/mmc/host.h>
	21	#include <linux/mmc/mmc.h>
	22	#include <linux/mmc/dw_mmc.h>
c91eab4b TA	23	#include <linux/of.h>
c91eab4b TA	24
62ca8034	25	#include "dw_mmc.h"
7725a52c	26	#include "dw_mmc-pltfm.h"
62ca8034	27
ec1e5d70	28	static void dw_mci_pltfm_prepare_command(struct dw_mci host, u32 cmdr)
c73e41c8 HS	29	{
	30	*cmdr \|= SDMMC_CMD_USE_HOLD_REG;
	31	}
	32
	33	static const struct dw_mci_drv_data rockchip_drv_data = {
ec1e5d70 DN	34	.prepare_command = dw_mci_pltfm_prepare_command,
	35	};
	36
	37	static const struct dw_mci_drv_data socfpga_drv_data = {
	38	.prepare_command = dw_mci_pltfm_prepare_command,
c73e41c8 HS	39	};
c73e41c8 HS	40
800d78bf	41	int dw_mci_pltfm_register(struct platform_device *pdev,
bcc87666	42	const struct dw_mci_drv_data *drv_data)
62ca8034 SH	43	{
	44	struct dw_mci *host;
	45	struct resource *regs;
62ca8034	46
bb8bdc77	47	host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
62ca8034 SH	48	if (!host)
	49	return -ENOMEM;
	50
62ca8034	51	host->irq = platform_get_irq(pdev, 0);
bb8bdc77 TA	52	if (host->irq < 0)
bb8bdc77 TA	53	return host->irq;
62ca8034	54
800d78bf	55	host->drv_data = drv_data;
4a90920c	56	host->dev = &pdev->dev;
62ca8034 SH	57	host->irq_flags = 0;
62ca8034 SH	58	host->pdata = pdev->dev.platform_data;
bcc87666 AS	59
bcc87666 AS	60	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
a3e2cd7f TR	61	host->regs = devm_ioremap_resource(&pdev->dev, regs);
	62	if (IS_ERR(host->regs))
	63	return PTR_ERR(host->regs);
bb8bdc77	64
62ca8034	65	platform_set_drvdata(pdev, host);
dd369800	66	return dw_mci_probe(host);
62ca8034	67	}
17403f23 TA	68	EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);
17403f23 TA	69
62ca8034 SH	70	#ifdef CONFIG_PM_SLEEP
	71	/*
	72	* TODO: we should probably disable the clock to the card in the suspend path.
	73	*/
	74	static int dw_mci_pltfm_suspend(struct device *dev)
	75	{
62ca8034 SH	76	struct dw_mci *host = dev_get_drvdata(dev);
62ca8034 SH	77
dd369800	78	return dw_mci_suspend(host);
62ca8034 SH	79	}
	80
	81	static int dw_mci_pltfm_resume(struct device *dev)
	82	{
62ca8034 SH	83	struct dw_mci *host = dev_get_drvdata(dev);
62ca8034 SH	84
dd369800	85	return dw_mci_resume(host);
62ca8034 SH	86	}
	87	#else
	88	#define dw_mci_pltfm_suspend NULL
	89	#define dw_mci_pltfm_resume NULL
	90	#endif /* CONFIG_PM_SLEEP */
	91
17403f23 TA	92	SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);
17403f23 TA	93	EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);
62ca8034	94
c91eab4b TA	95	static const struct of_device_id dw_mci_pltfm_match[] = {
c91eab4b TA	96	{ .compatible = "snps,dw-mshc", },
c73e41c8 HS	97	{ .compatible = "rockchip,rk2928-dw-mshc",
c73e41c8 HS	98	.data = &rockchip_drv_data },
ec1e5d70 DN	99	{ .compatible = "altr,socfpga-dw-mshc",
ec1e5d70 DN	100	.data = &socfpga_drv_data },
c91eab4b TA	101	{},
	102	};
	103	MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);
	104
b177a530 HS	105	static int dw_mci_pltfm_probe(struct platform_device *pdev)
b177a530 HS	106	{
c73e41c8 HS	107	const struct dw_mci_drv_data *drv_data = NULL;
	108	const struct of_device_id *match;
	109
	110	if (pdev->dev.of_node) {
	111	match = of_match_node(dw_mci_pltfm_match, pdev->dev.of_node);
	112	drv_data = match->data;
	113	}
	114
	115	return dw_mci_pltfm_register(pdev, drv_data);
b177a530 HS	116	}
	117
	118	int dw_mci_pltfm_remove(struct platform_device *pdev)
	119	{
	120	struct dw_mci *host = platform_get_drvdata(pdev);
	121
	122	dw_mci_remove(host);
	123	return 0;
	124	}
	125	EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);
	126
62ca8034	127	static struct platform_driver dw_mci_pltfm_driver = {
49480cf2	128	.probe = dw_mci_pltfm_probe,
4e608e4e	129	.remove = dw_mci_pltfm_remove,
62ca8034 SH	130	.driver = {
62ca8034 SH	131	.name = "dw_mmc",
cf109bc0	132	.of_match_table = dw_mci_pltfm_match,
62ca8034 SH	133	.pm = &dw_mci_pltfm_pmops,
	134	},
	135	};
	136
49480cf2	137	module_platform_driver(dw_mci_pltfm_driver);
62ca8034 SH	138
	139	MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
	140	MODULE_AUTHOR("NXP Semiconductor VietNam");
	141	MODULE_AUTHOR("Imagination Technologies Ltd");
	142	MODULE_LICENSE("GPL v2");