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/*
* linux/drivers/mmc/host/tmio_mmc.c
*
* Copyright (C) 2007 Ian Molton
* Copyright (C) 2004 Ian Molton
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Driver for the MMC / SD / SDIO cell found in:
*
* TC6393XB TC6391XB TC6387XB T7L66XB ASIC3
*/
#include <linux/device.h>
#include <linux/mfd/core.h>
#include <linux/mfd/tmio.h>
#include <linux/mmc/host.h>
#include <linux/module.h>
#include <linux/pagemap.h>
#include <linux/scatterlist.h>
#include "tmio_mmc.h"
#ifdef CONFIG_PM
static int tmio_mmc_suspend(struct platform_device *dev, pm_message_t state)
{
const struct mfd_cell *cell = mfd_get_cell(dev);
int ret;
ret = tmio_mmc_host_suspend(&dev->dev);
/* Tell MFD core it can disable us now.*/
if (!ret && cell->disable)
cell->disable(dev);
return ret;
}
static int tmio_mmc_resume(struct platform_device *dev)
{
const struct mfd_cell *cell = mfd_get_cell(dev);
int ret = 0;
/* Tell the MFD core we are ready to be enabled */
if (cell->resume)
ret = cell->resume(dev);
if (!ret)
ret = tmio_mmc_host_resume(&dev->dev);
return ret;
}
#else
#define tmio_mmc_suspend NULL
#define tmio_mmc_resume NULL
#endif
static int tmio_mmc_probe(struct platform_device *pdev)
{
const struct mfd_cell *cell = mfd_get_cell(pdev);
struct tmio_mmc_data *pdata;
struct tmio_mmc_host *host;
struct resource *res;
int ret = -EINVAL, irq;
if (pdev->num_resources != 2)
goto out;
pdata = pdev->dev.platform_data;
if (!pdata || !pdata->hclk)
goto out;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
ret = irq;
goto out;
}
/* Tell the MFD core we are ready to be enabled */
if (cell->enable) {
ret = cell->enable(pdev);
if (ret)
goto out;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -EINVAL;
/* SD control register space size is 0x200, 0x400 for bus_shift=1 */
pdata->bus_shift = resource_size(res) >> 10;
pdata->flags |= TMIO_MMC_HAVE_HIGH_REG;
ret = tmio_mmc_host_probe(&host, pdev, pdata);
if (ret)
goto cell_disable;
ret = request_irq(irq, tmio_mmc_irq, IRQF_TRIGGER_FALLING,
dev_name(&pdev->dev), host);
if (ret)
goto host_remove;
pr_info("%s at 0x%08lx irq %d\n", mmc_hostname(host->mmc),
(unsigned long)host->ctl, irq);
return 0;
host_remove:
tmio_mmc_host_remove(host);
cell_disable:
if (cell->disable)
cell->disable(pdev);
out:
return ret;
}
static int tmio_mmc_remove(struct platform_device *pdev)
{
const struct mfd_cell *cell = mfd_get_cell(pdev);
struct mmc_host *mmc = platform_get_drvdata(pdev);
if (mmc) {
struct tmio_mmc_host *host = mmc_priv(mmc);
free_irq(platform_get_irq(pdev, 0), host);
tmio_mmc_host_remove(host);
if (cell->disable)
cell->disable(pdev);
}
return 0;
}
/* ------------------- device registration ----------------------- */
static struct platform_driver tmio_mmc_driver = {
.driver = {
.name = "tmio-mmc",
.owner = THIS_MODULE,
},
.probe = tmio_mmc_probe,
.remove = tmio_mmc_remove,
.suspend = tmio_mmc_suspend,
.resume = tmio_mmc_resume,
};
module_platform_driver(tmio_mmc_driver);
MODULE_DESCRIPTION("Toshiba TMIO SD/MMC driver");
MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:tmio-mmc");
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