From mboxrd@z Thu Jan 1 00:00:00 1970 From: vm.rod25@gmail.com (vm.rod25 at gmail.com) Date: Wed, 1 Dec 2010 13:32:27 -0600 Subject: [PATCH v9 4/6] davinci: MMC/SD support for Omapl138-Hawkboard In-Reply-To: <1291231949-23835-1-git-send-email-vm.rod25@gmail.com> References: <1291231949-23835-1-git-send-email-vm.rod25@gmail.com> Message-ID: <1291231949-23835-5-git-send-email-vm.rod25@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Victor Rodriguez This patch adds MMC/SD support for the Hawkboard-L138 system Signed-off-by: Victor Rodriguez Tested-by: Rene Gonzalez --- 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 | 63 +++++++++++++++++++++++++++ 1 files changed, 63 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c b/arch/arm/mach-davinci/board-omapl138-hawk.c index cefff9b..d0c853f 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 +112,65 @@ 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); + return; + } + + ret = da8xx_register_mmcsd0(&da850_mmc_config); + if (ret) + pr_warning("%s: MMC/SD0 registration failed: %d\n", + __func__, ret); +} + static struct davinci_uart_config omapl138_hawk_uart_config __initdata = { .enabled_uarts = 0x7, }; @@ -127,6 +188,8 @@ 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: " -- 1.7.0.4