From 364cd540f036f106d886a9c51ae05e9a9bacf051 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Thu, 19 Nov 2009 12:02:07 +0100 Subject: [PATCH] ARM: MX3: add MMC/SDHC support to mx31lite-db.c Signed-off-by: Daniel Mack Signed-off-by: Sascha Hauer --- arch/arm/mach-mx3/mx31lite-db.c | 70 +++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) diff --git a/arch/arm/mach-mx3/mx31lite-db.c b/arch/arm/mach-mx3/mx31lite-db.c index 751d15ec0b03..45abae1da335 100644 --- a/arch/arm/mach-mx3/mx31lite-db.c +++ b/arch/arm/mach-mx3/mx31lite-db.c @@ -38,6 +38,7 @@ #include #include #include +#include #include "devices.h" @@ -61,11 +62,80 @@ static struct imxuart_platform_data uart_pdata __initdata = { .flags = IMXUART_HAVE_RTSCTS, }; +/* MMC */ + +static int gpio_det, gpio_wp; + +#define MMC_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \ + PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU) + +static int mxc_mmc1_get_ro(struct device *dev) +{ + return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_LCS0)); +} + +static int mxc_mmc1_init(struct device *dev, + irq_handler_t detect_irq, void *data) +{ + int ret; + + gpio_det = IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1); + gpio_wp = IOMUX_TO_GPIO(MX31_PIN_GPIO1_6); + + mxc_iomux_set_pad(MX31_PIN_SD1_DATA0, MMC_PAD_CFG); + mxc_iomux_set_pad(MX31_PIN_SD1_DATA1, MMC_PAD_CFG); + mxc_iomux_set_pad(MX31_PIN_SD1_DATA2, MMC_PAD_CFG); + mxc_iomux_set_pad(MX31_PIN_SD1_DATA3, MMC_PAD_CFG); + mxc_iomux_set_pad(MX31_PIN_SD1_CLK, MMC_PAD_CFG); + mxc_iomux_set_pad(MX31_PIN_SD1_CMD, MMC_PAD_CFG); + + ret = gpio_request(gpio_det, "MMC detect"); + if (ret) + return ret; + + ret = gpio_request(gpio_wp, "MMC w/p"); + if (ret) + goto exit_free_det; + + gpio_direction_input(gpio_det); + gpio_direction_input(gpio_wp); + + ret = request_irq(IOMUX_TO_IRQ(MX31_PIN_DCD_DCE1), detect_irq, + IRQF_DISABLED | IRQF_TRIGGER_FALLING, + "MMC detect", data); + if (ret) + goto exit_free_wp; + + return 0; + +exit_free_wp: + gpio_free(gpio_wp); + +exit_free_det: + gpio_free(gpio_det); + + return ret; +} + +static void mxc_mmc1_exit(struct device *dev, void *data) +{ + gpio_free(gpio_det); + gpio_free(gpio_wp); + free_irq(IOMUX_TO_IRQ(MX31_PIN_GPIO1_1), data); +} + +static struct imxmmc_platform_data mmc_pdata = { + .get_ro = mxc_mmc1_get_ro, + .init = mxc_mmc1_init, + .exit = mxc_mmc1_exit, +}; + void __init mx31lite_db_init(void) { mxc_iomux_setup_multiple_pins(litekit_db_board_pins, ARRAY_SIZE(litekit_db_board_pins), "development board pins"); mxc_register_device(&mxc_uart_device0, &uart_pdata); + mxc_register_device(&mxcsdhc_device0, &mmc_pdata); } -- 2.34.1