diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-mx3/mx31lilly-db.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/arch/arm/mach-mx3/mx31lilly-db.c b/arch/arm/mach-mx3/mx31lilly-db.c index 73e1e5e3cc3..b7821163fc1 100644 --- a/arch/arm/mach-mx3/mx31lilly-db.c +++ b/arch/arm/mach-mx3/mx31lilly-db.c @@ -27,6 +27,7 @@ #include <linux/kernel.h> #include <linux/types.h> #include <linux/init.h> +#include <linux/gpio.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> @@ -37,6 +38,7 @@ #include <mach/imx-uart.h> #include <mach/iomux-mx3.h> #include <mach/board-mx31lilly.h> +#include <mach/mmc.h> #include "devices.h" @@ -51,6 +53,12 @@ static unsigned int lilly_db_board_pins[] __initdata = { MX31_PIN_RTS1__RTS1, MX31_PIN_TXD1__TXD1, MX31_PIN_RXD1__RXD1, + MX31_PIN_SD1_DATA3__SD1_DATA3, + MX31_PIN_SD1_DATA2__SD1_DATA2, + MX31_PIN_SD1_DATA1__SD1_DATA1, + MX31_PIN_SD1_DATA0__SD1_DATA0, + MX31_PIN_SD1_CLK__SD1_CLK, + MX31_PIN_SD1_CMD__SD1_CMD, }; /* UART */ @@ -58,11 +66,70 @@ static struct imxuart_platform_data uart_pdata __initdata = { .flags = IMXUART_HAVE_RTSCTS, }; +/* MMC support */ + +static int mxc_mmc1_get_ro(struct device *dev) +{ + return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_LCS0)); +} + +static int gpio_det, gpio_wp; + +static int mxc_mmc1_init(struct device *dev, + irq_handler_t detect_irq, void *data) +{ + int ret; + + gpio_det = IOMUX_TO_GPIO(MX31_PIN_GPIO1_1); + gpio_wp = IOMUX_TO_GPIO(MX31_PIN_LCS0); + + 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_GPIO1_1), 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 mx31lilly_db_init(void) { mxc_iomux_setup_multiple_pins(lilly_db_board_pins, ARRAY_SIZE(lilly_db_board_pins), "development board pins"); mxc_register_device(&mxc_uart_device0, &uart_pdata); + mxc_register_device(&mxcsdhc_device0, &mmc_pdata); } |