From: Victor Rodriguez victor.rodriguez@sasken.com
This patch adds MMC/SD support for the Hawkboard-L138 system
Signed-off-by: Victor Rodriguez victor.rodriguez@sasken.com --- Notes:
This patch works with da8xx_omapl_defconfig In order to test it select in menuconfig like insmodule
MMC/SD/SDIO card support ---> MMC block device driver Use bounce buffer for simple hosts TI DAVINCI Multimedia Card Interface support
arch/arm/mach-davinci/board-omapl138-hawk.c | 50 +++++++++++++++++++++++++++ 1 files changed, 50 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c b/arch/arm/mach-davinci/board-omapl138-hawk.c index 6f76220..87dea28 100644 --- a/arch/arm/mach-davinci/board-omapl138-hawk.c +++ b/arch/arm/mach-davinci/board-omapl138-hawk.c @@ -23,6 +23,8 @@ #include <mach/mux.h>
#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, @@ -150,6 +152,32 @@ static struct snd_platform_data omapl138_hawk_snd_data = { .rxnumevt = 1, };
+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 struct davinci_uart_config omapl138_hawk_uart_config __initdata = { .enabled_uarts = 0x7, }; @@ -180,6 +208,28 @@ static __init void omapl138_hawk_init(void) pr_warning("%s: mcasp mux setup failed: %d\n", __func__, ret); da8xx_register_mcasp(0, &omapl138_hawk_snd_data);
+ ret = davinci_cfg_reg_list(hawk_mmcsd0_pins); + if (ret) + pr_warning("%s: MMC/SD0 mux setup failed: %d\n", + __func__, ret); + + ret = gpio_request(DA850_HAWK_MMCSD_CD_PIN, "MMC CD\n"); + if (ret) + pr_warning("%s: can not open GPIO %d\n", + __func__, DA850_HAWK_MMCSD_CD_PIN); + gpio_direction_input(DA850_HAWK_MMCSD_CD_PIN); + + ret = gpio_request(DA850_HAWK_MMCSD_WP_PIN, "MMC WP\n"); + if (ret) + pr_warning("%s: can not open GPIO %d\n", + __func__, DA850_HAWK_MMCSD_WP_PIN); + gpio_direction_input(DA850_HAWK_MMCSD_WP_PIN); + + ret = da8xx_register_mmcsd0(&da850_mmc_config); + if (ret) + pr_warning("%s: MMC/SD0 registration failed: %d\n", + __func__, ret); + ret = da8xx_register_watchdog(); if (ret) pr_warning("omapl138_hawk_init: "