[deliverable/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/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"

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

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

	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!regs)
		return -ENXIO;

	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;
	host->regs = devm_request_and_ioremap(&pdev->dev, regs);
	if (!host->regs)
		return -ENOMEM;

	if (drv_data && drv_data->init) {
		ret = drv_data->init(host);
		if (ret)
			return ret;
	}

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

static int dw_mci_pltfm_probe(struct platform_device *pdev)
{
	return dw_mci_pltfm_register(pdev, NULL);
}

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

	platform_set_drvdata(pdev, NULL);
	dw_mci_remove(host);
	return 0;
}
EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);

#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)
{
	int ret;
	struct dw_mci *host = dev_get_drvdata(dev);

	ret = dw_mci_suspend(host);
	if (ret)
		return ret;

	return 0;
}

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

	ret = dw_mci_resume(host);
	if (ret)
		return ret;

	return 0;
}
#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", },
	{},
};
MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);

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	= of_match_ptr(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
	13	#include <linux/interrupt.h>
	14	#include <linux/module.h>
	15	#include <linux/io.h>
	16	#include <linux/irq.h>
	17	#include <linux/platform_device.h>
	18	#include <linux/slab.h>
	19	#include <linux/mmc/host.h>
	20	#include <linux/mmc/mmc.h>
	21	#include <linux/mmc/dw_mmc.h>
c91eab4b TA	22	#include <linux/of.h>
c91eab4b TA	23
62ca8034 SH	24	#include "dw_mmc.h"
62ca8034 SH	25
800d78bf	26	int dw_mci_pltfm_register(struct platform_device *pdev,
8e2b36ea	27	const struct dw_mci_drv_data *drv_data)
62ca8034 SH	28	{
	29	struct dw_mci *host;
	30	struct resource *regs;
	31	int ret;
	32
bb8bdc77	33	host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
62ca8034 SH	34	if (!host)
	35	return -ENOMEM;
	36
	37	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
bb8bdc77 TA	38	if (!regs)
bb8bdc77 TA	39	return -ENXIO;
62ca8034 SH	40
62ca8034 SH	41	host->irq = platform_get_irq(pdev, 0);
bb8bdc77 TA	42	if (host->irq < 0)
bb8bdc77 TA	43	return host->irq;
62ca8034	44
800d78bf	45	host->drv_data = drv_data;
4a90920c	46	host->dev = &pdev->dev;
62ca8034 SH	47	host->irq_flags = 0;
62ca8034 SH	48	host->pdata = pdev->dev.platform_data;
bb8bdc77	49	host->regs = devm_request_and_ioremap(&pdev->dev, regs);
62ca8034	50	if (!host->regs)
bb8bdc77 TA	51	return -ENOMEM;
bb8bdc77 TA	52
cb27a843 JH	53	if (drv_data && drv_data->init) {
cb27a843 JH	54	ret = drv_data->init(host);
800d78bf TA	55	if (ret)
	56	return ret;
	57	}
	58
62ca8034 SH	59	platform_set_drvdata(pdev, host);
62ca8034 SH	60	ret = dw_mci_probe(host);
62ca8034 SH	61	return ret;
62ca8034 SH	62	}
17403f23 TA	63	EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);
17403f23 TA	64
c3be1efd	65	static int dw_mci_pltfm_probe(struct platform_device *pdev)
17403f23	66	{
800d78bf	67	return dw_mci_pltfm_register(pdev, NULL);
17403f23	68	}
62ca8034	69
6e0ee714	70	static int dw_mci_pltfm_remove(struct platform_device *pdev)
62ca8034 SH	71	{
	72	struct dw_mci *host = platform_get_drvdata(pdev);
	73
	74	platform_set_drvdata(pdev, NULL);
	75	dw_mci_remove(host);
62ca8034 SH	76	return 0;
62ca8034 SH	77	}
17403f23	78	EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);
62ca8034 SH	79
	80	#ifdef CONFIG_PM_SLEEP
	81	/*
	82	* TODO: we should probably disable the clock to the card in the suspend path.
	83	*/
	84	static int dw_mci_pltfm_suspend(struct device *dev)
	85	{
	86	int ret;
	87	struct dw_mci *host = dev_get_drvdata(dev);
	88
	89	ret = dw_mci_suspend(host);
	90	if (ret)
	91	return ret;
	92
	93	return 0;
	94	}
	95
	96	static int dw_mci_pltfm_resume(struct device *dev)
	97	{
	98	int ret;
	99	struct dw_mci *host = dev_get_drvdata(dev);
	100
	101	ret = dw_mci_resume(host);
	102	if (ret)
	103	return ret;
	104
	105	return 0;
	106	}
	107	#else
	108	#define dw_mci_pltfm_suspend NULL
	109	#define dw_mci_pltfm_resume NULL
	110	#endif /* CONFIG_PM_SLEEP */
	111
17403f23 TA	112	SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);
17403f23 TA	113	EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);
62ca8034	114
c91eab4b TA	115	static const struct of_device_id dw_mci_pltfm_match[] = {
	116	{ .compatible = "snps,dw-mshc", },
	117	{},
	118	};
	119	MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);
	120
62ca8034	121	static struct platform_driver dw_mci_pltfm_driver = {
49480cf2	122	.probe = dw_mci_pltfm_probe,
4e608e4e	123	.remove = dw_mci_pltfm_remove,
62ca8034 SH	124	.driver = {
62ca8034 SH	125	.name = "dw_mmc",
c91eab4b	126	.of_match_table = of_match_ptr(dw_mci_pltfm_match),
62ca8034 SH	127	.pm = &dw_mci_pltfm_pmops,
	128	},
	129	};
	130
49480cf2	131	module_platform_driver(dw_mci_pltfm_driver);
62ca8034 SH	132
	133	MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
	134	MODULE_AUTHOR("NXP Semiconductor VietNam");
	135	MODULE_AUTHOR("Imagination Technologies Ltd");
	136	MODULE_LICENSE("GPL v2");