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/*
* 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"
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_ioremap_resource(&pdev->dev, regs);
if (IS_ERR(host->regs))
return PTR_ERR(host->regs);
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);
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");
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