From ef782d8d4e80b25a56d8cb93d648dd125e6ea95e Mon Sep 17 00:00:00 2001 From: Victor Rodriguez Date: Mon, 27 Dec 2010 16:43:11 -0600 Subject: davinci: MMC/SD support for Omapl138-Hawkboard This patch adds MMC/SD support for the Hawkboard-L138 system Signed-off-by: Victor Rodriguez Tested-by: Rene Gonzalez Acked-by: Sekhar Nori Signed-off-by: Kevin Hilman --- arch/arm/mach-davinci/board-omapl138-hawk.c | 72 +++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) (limited to 'arch/arm/mach-davinci/board-omapl138-hawk.c') diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c b/arch/arm/mach-davinci/board-omapl138-hawk.c index cefff9b86f72..eeb1cad02503 100644 --- a/arch/arm/mach-davinci/board-omapl138-hawk.c +++ b/arch/arm/mach-davinci/board-omapl138-hawk.c @@ -22,6 +22,8 @@ #include #define HAWKBOARD_PHY_ID "0:07" +#define DA850_HAWK_MMCSD_CD_PIN GPIO_TO_PIN(3, 12) +#define DA850_HAWK_MMCSD_WP_PIN GPIO_TO_PIN(3, 13) static short omapl138_hawk_mii_pins[] __initdata = { DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3, @@ -110,6 +112,74 @@ static struct edma_rsv_info *da850_edma_rsv[2] = { &da850_edma_cc1_rsv, }; +static const short hawk_mmcsd0_pins[] = { + DA850_MMCSD0_DAT_0, DA850_MMCSD0_DAT_1, DA850_MMCSD0_DAT_2, + DA850_MMCSD0_DAT_3, DA850_MMCSD0_CLK, DA850_MMCSD0_CMD, + DA850_GPIO3_12, DA850_GPIO3_13, + -1 +}; + +static int da850_hawk_mmc_get_ro(int index) +{ + return gpio_get_value(DA850_HAWK_MMCSD_WP_PIN); +} + +static int da850_hawk_mmc_get_cd(int index) +{ + return !gpio_get_value(DA850_HAWK_MMCSD_CD_PIN); +} + +static struct davinci_mmc_config da850_mmc_config = { + .get_ro = da850_hawk_mmc_get_ro, + .get_cd = da850_hawk_mmc_get_cd, + .wires = 4, + .max_freq = 50000000, + .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED, + .version = MMC_CTLR_VERSION_2, +}; + +static __init void omapl138_hawk_mmc_init(void) +{ + int ret; + + ret = davinci_cfg_reg_list(hawk_mmcsd0_pins); + if (ret) { + pr_warning("%s: MMC/SD0 mux setup failed: %d\n", + __func__, ret); + return; + } + + ret = gpio_request_one(DA850_HAWK_MMCSD_CD_PIN, + GPIOF_DIR_IN, "MMC CD"); + if (ret < 0) { + pr_warning("%s: can not open GPIO %d\n", + __func__, DA850_HAWK_MMCSD_CD_PIN); + return; + } + + ret = gpio_request_one(DA850_HAWK_MMCSD_WP_PIN, + GPIOF_DIR_IN, "MMC WP"); + if (ret < 0) { + pr_warning("%s: can not open GPIO %d\n", + __func__, DA850_HAWK_MMCSD_WP_PIN); + goto mmc_setup_wp_fail; + } + + ret = da8xx_register_mmcsd0(&da850_mmc_config); + if (ret) { + pr_warning("%s: MMC/SD0 registration failed: %d\n", + __func__, ret); + goto mmc_setup_mmcsd_fail; + } + + return; + +mmc_setup_mmcsd_fail: + gpio_free(DA850_HAWK_MMCSD_WP_PIN); +mmc_setup_wp_fail: + gpio_free(DA850_HAWK_MMCSD_CD_PIN); +} + static struct davinci_uart_config omapl138_hawk_uart_config __initdata = { .enabled_uarts = 0x7, }; @@ -127,6 +197,8 @@ static __init void omapl138_hawk_init(void) pr_warning("%s: EDMA registration failed: %d\n", __func__, ret); + omapl138_hawk_mmc_init(); + ret = da8xx_register_watchdog(); if (ret) pr_warning("omapl138_hawk_init: " -- cgit