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/*
*
* arch/arm/mach-u300/mmc.c
*
*
* Copyright (C) 2009 ST-Ericsson SA
* License terms: GNU General Public License (GPL) version 2
*
* Author: Linus Walleij <linus.walleij@stericsson.com>
* Author: Johan Lundin
* Author: Jonas Aaberg <jonas.aberg@stericsson.com>
*/
#include <linux/device.h>
#include <linux/amba/bus.h>
#include <linux/mmc/host.h>
#include <linux/dmaengine.h>
#include <linux/amba/mmci.h>
#include <linux/slab.h>
#include <mach/coh901318.h>
#include <mach/dma_channels.h>
#include <mach/gpio-u300.h>
#include "mmc.h"
#include "padmux.h"
static struct mmci_platform_data mmc0_plat_data = {
/*
* Do not set ocr_mask or voltage translation function,
* we have a regulator we can control instead.
*/
/* Nominally 2.85V on our platform */
.f_max = 24000000,
.gpio_wp = -1,
.gpio_cd = U300_GPIO_PIN_MMC_CD,
.cd_invert = true,
.capabilities = MMC_CAP_MMC_HIGHSPEED |
MMC_CAP_SD_HIGHSPEED | MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
#ifdef CONFIG_COH901318
.dma_filter = coh901318_filter_id,
.dma_rx_param = (void *) U300_DMA_MMCSD_RX_TX,
/* Don't specify a TX channel, this RX channel is bidirectional */
#endif
};
int __devinit mmc_init(struct amba_device *adev)
{
struct device *mmcsd_device = &adev->dev;
struct pmx *pmx;
int ret = 0;
mmcsd_device->platform_data = &mmc0_plat_data;
/*
* Setup padmuxing for MMC. Since this must always be
* compiled into the kernel, pmx is never released.
*/
pmx = pmx_get(mmcsd_device, U300_APP_PMX_MMC_SETTING);
if (IS_ERR(pmx))
pr_warning("Could not get padmux handle\n");
else {
ret = pmx_activate(mmcsd_device, pmx);
if (IS_ERR_VALUE(ret))
pr_warning("Could not activate padmuxing\n");
}
return ret;
}
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