linux-vybrid_public/arch/arm/mach-ux500/board-mop500-sdi.c

/*
 * Copyright (C) ST-Ericsson SA 2010
 *
 * Author: Hanumath Prasad <hanumath.prasad@stericsson.com>
 * License terms: GNU General Public License (GPL) version 2
 */

#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/amba/bus.h>
#include <linux/amba/mmci.h>
#include <linux/mmc/host.h>
#include <linux/platform_device.h>
#include <linux/platform_data/dma-ste-dma40.h>

#include <asm/mach-types.h>
#include "devices.h"

#include "db8500-regs.h"
#include "devices-db8500.h"
#include "board-mop500.h"
#include "ste-dma40-db8500.h"

/*
 * v2 has a new version of this block that need to be forced, the number found
 * in hardware is incorrect
 */
#define U8500_SDI_V2_PERIPHID 0x10480180

/*
 * SDI 0 (MicroSD slot)
 */

#ifdef CONFIG_STE_DMA40
struct stedma40_chan_cfg mop500_sdi0_dma_cfg_rx = {
	.mode = STEDMA40_MODE_LOGICAL,
	.dir = DMA_DEV_TO_MEM,
	.dev_type = DB8500_DMA_DEV29_SD_MM0,
};

static struct stedma40_chan_cfg mop500_sdi0_dma_cfg_tx = {
	.mode = STEDMA40_MODE_LOGICAL,
	.dir = DMA_MEM_TO_DEV,
	.dev_type = DB8500_DMA_DEV29_SD_MM0,
};
#endif

struct mmci_platform_data mop500_sdi0_data = {
	.ocr_mask	= MMC_VDD_29_30,
	.f_max		= 50000000,
	.capabilities	= MMC_CAP_4_BIT_DATA |
				MMC_CAP_SD_HIGHSPEED |
				MMC_CAP_MMC_HIGHSPEED,
	.gpio_wp	= -1,
	.sigdir		= MCI_ST_FBCLKEN |
				MCI_ST_CMDDIREN |
				MCI_ST_DATA0DIREN |
				MCI_ST_DATA2DIREN,
#ifdef CONFIG_STE_DMA40
	.dma_filter	= stedma40_filter,
	.dma_rx_param	= &mop500_sdi0_dma_cfg_rx,
	.dma_tx_param	= &mop500_sdi0_dma_cfg_tx,
#endif
};

static void sdi0_configure(struct device *parent)
{
	/* Add the device, force v2 to subrevision 1 */
	db8500_add_sdi0(parent, &mop500_sdi0_data, U8500_SDI_V2_PERIPHID);
}

void mop500_sdi_tc35892_init(struct device *parent)
{
	mop500_sdi0_data.gpio_cd = GPIO_SDMMC_CD;
	sdi0_configure(parent);
}

/*
 * SDI1 (SDIO WLAN)
 */
#ifdef CONFIG_STE_DMA40
static struct stedma40_chan_cfg sdi1_dma_cfg_rx = {
	.mode = STEDMA40_MODE_LOGICAL,
	.dir = DMA_DEV_TO_MEM,
	.dev_type = DB8500_DMA_DEV32_SD_MM1,
};

static struct stedma40_chan_cfg sdi1_dma_cfg_tx = {
	.mode = STEDMA40_MODE_LOGICAL,
	.dir = DMA_MEM_TO_DEV,
	.dev_type = DB8500_DMA_DEV32_SD_MM1,
};
#endif

struct mmci_platform_data mop500_sdi1_data = {
	.ocr_mask	= MMC_VDD_29_30,
	.f_max		= 50000000,
	.capabilities	= MMC_CAP_4_BIT_DATA,
	.gpio_cd	= -1,
	.gpio_wp	= -1,
#ifdef CONFIG_STE_DMA40
	.dma_filter	= stedma40_filter,
	.dma_rx_param	= &sdi1_dma_cfg_rx,
	.dma_tx_param	= &sdi1_dma_cfg_tx,
#endif
};

/*
 * SDI 2 (POP eMMC, not on DB8500ed)
 */

#ifdef CONFIG_STE_DMA40
struct stedma40_chan_cfg mop500_sdi2_dma_cfg_rx = {
	.mode = STEDMA40_MODE_LOGICAL,
	.dir = DMA_DEV_TO_MEM,
	.dev_type =  DB8500_DMA_DEV28_SD_MM2,
};

static struct stedma40_chan_cfg mop500_sdi2_dma_cfg_tx = {
	.mode = STEDMA40_MODE_LOGICAL,
	.dir = DMA_MEM_TO_DEV,
	.dev_type = DB8500_DMA_DEV28_SD_MM2,
};
#endif

struct mmci_platform_data mop500_sdi2_data = {
	.ocr_mask	= MMC_VDD_165_195,
	.f_max		= 50000000,
	.capabilities	= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA |
			  MMC_CAP_MMC_HIGHSPEED,
	.gpio_cd	= -1,
	.gpio_wp	= -1,
#ifdef CONFIG_STE_DMA40
	.dma_filter	= stedma40_filter,
	.dma_rx_param	= &mop500_sdi2_dma_cfg_rx,
	.dma_tx_param	= &mop500_sdi2_dma_cfg_tx,
#endif
};

/*
 * SDI 4 (on-board eMMC)
 */

#ifdef CONFIG_STE_DMA40
struct stedma40_chan_cfg mop500_sdi4_dma_cfg_rx = {
	.mode = STEDMA40_MODE_LOGICAL,
	.dir = DMA_DEV_TO_MEM,
	.dev_type =  DB8500_DMA_DEV42_SD_MM4,
};

static struct stedma40_chan_cfg mop500_sdi4_dma_cfg_tx = {
	.mode = STEDMA40_MODE_LOGICAL,
	.dir = DMA_MEM_TO_DEV,
	.dev_type = DB8500_DMA_DEV42_SD_MM4,
};
#endif

struct mmci_platform_data mop500_sdi4_data = {
	.ocr_mask	= MMC_VDD_29_30,
	.f_max		= 50000000,
	.capabilities	= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA |
			  MMC_CAP_MMC_HIGHSPEED,
	.gpio_cd	= -1,
	.gpio_wp	= -1,
#ifdef CONFIG_STE_DMA40
	.dma_filter	= stedma40_filter,
	.dma_rx_param	= &mop500_sdi4_dma_cfg_rx,
	.dma_tx_param	= &mop500_sdi4_dma_cfg_tx,
#endif
};

void __init mop500_sdi_init(struct device *parent)
{
	/* PoP:ed eMMC */
	db8500_add_sdi2(parent, &mop500_sdi2_data, U8500_SDI_V2_PERIPHID);
	/* On-board eMMC */
	db8500_add_sdi4(parent, &mop500_sdi4_data, U8500_SDI_V2_PERIPHID);

	/*
	 * On boards with the TC35892 GPIO expander, sdi0 will finally
	 * be added when the TC35892 initializes and calls
	 * mop500_sdi_tc35892_init() above.
	 */
}

void __init snowball_sdi_init(struct device *parent)
{
	/* On Snowball MMC_CAP_SD_HIGHSPEED isn't supported (Hardware issue?) */
	mop500_sdi0_data.capabilities &= ~MMC_CAP_SD_HIGHSPEED;
	/* On-board eMMC */
	db8500_add_sdi4(parent, &mop500_sdi4_data, U8500_SDI_V2_PERIPHID);
	/* External Micro SD slot */
	mop500_sdi0_data.gpio_cd = SNOWBALL_SDMMC_CD_GPIO;
	mop500_sdi0_data.cd_invert = true;
	sdi0_configure(parent);
}

void __init hrefv60_sdi_init(struct device *parent)
{
	/* PoP:ed eMMC */
	db8500_add_sdi2(parent, &mop500_sdi2_data, U8500_SDI_V2_PERIPHID);
	/* On-board eMMC */
	db8500_add_sdi4(parent, &mop500_sdi4_data, U8500_SDI_V2_PERIPHID);
	/* External Micro SD slot */
	mop500_sdi0_data.gpio_cd = HREFV60_SDMMC_CD_GPIO;
	sdi0_configure(parent);
	/* WLAN SDIO channel */
	db8500_add_sdi1(parent, &mop500_sdi1_data, U8500_SDI_V2_PERIPHID);
}