linux/arch/arm/mach-ux500/board-u5500-sdi.c
Linus Walleij 5d7b8467e1 mach-ux500: config Ux500 PL011 PL022 PL180 for DMA
This will configure the platform data for the PL011, PL022
and PL180 (derivate) PrimeCells found in the Ux500 to use DMA
with the generic DMA engine for DMA40.

Signed-off-by: Per Forlin <per.forlin@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2011-03-14 14:05:14 +01:00

75 lines
2.1 KiB
C

/*
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Hanumath Prasad <ulf.hansson@stericsson.com>
* License terms: GNU General Public License (GPL) version 2
*/
#include <linux/amba/mmci.h>
#include <linux/mmc/host.h>
#include <linux/gpio.h>
#include <plat/pincfg.h>
#include <mach/db5500-regs.h>
#include <plat/ste_dma40.h>
#include "pins-db5500.h"
#include "devices-db5500.h"
#include "ste-dma40-db5500.h"
static pin_cfg_t u5500_sdi_pins[] = {
/* SDI0 (POP eMMC) */
GPIO5_MC0_DAT0 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO6_MC0_DAT1 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO7_MC0_DAT2 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO8_MC0_DAT3 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO9_MC0_DAT4 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO10_MC0_DAT5 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO11_MC0_DAT6 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO12_MC0_DAT7 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO13_MC0_CMD | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO14_MC0_CLK | PIN_DIR_OUTPUT | PIN_VAL_LOW,
};
#ifdef CONFIG_STE_DMA40
struct stedma40_chan_cfg u5500_sdi0_dma_cfg_rx = {
.mode = STEDMA40_MODE_LOGICAL,
.dir = STEDMA40_PERIPH_TO_MEM,
.src_dev_type = DB5500_DMA_DEV24_SDMMC0_RX,
.dst_dev_type = STEDMA40_DEV_DST_MEMORY,
.src_info.data_width = STEDMA40_WORD_WIDTH,
.dst_info.data_width = STEDMA40_WORD_WIDTH,
};
static struct stedma40_chan_cfg u5500_sdi0_dma_cfg_tx = {
.mode = STEDMA40_MODE_LOGICAL,
.dir = STEDMA40_MEM_TO_PERIPH,
.src_dev_type = STEDMA40_DEV_SRC_MEMORY,
.dst_dev_type = DB5500_DMA_DEV24_SDMMC0_TX,
.src_info.data_width = STEDMA40_WORD_WIDTH,
.dst_info.data_width = STEDMA40_WORD_WIDTH,
};
#endif
static struct mmci_platform_data u5500_sdi0_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 = &u5500_sdi0_dma_cfg_rx,
.dma_tx_param = &u5500_sdi0_dma_cfg_tx,
#endif
};
void __init u5500_sdi_init(void)
{
nmk_config_pins(u5500_sdi_pins, ARRAY_SIZE(u5500_sdi_pins));
db5500_add_sdi0(&u5500_sdi0_data);
}