From b5e1438cf98a1c588726b0f861178f9aa5a96caf Mon Sep 17 00:00:00 2001 From: Axel Haslam Date: Thu, 24 Nov 2016 16:04:54 +0100 Subject: [PATCH] ARM: davinci: da830-evm: use gpio descriptor for mmc pins Currently the mmc driver is polling the gpio to know if the card was removed. By using a gpio descriptor instead of the platform callbacks, the driver will be able to register the gpio using the mmc core APIs designed for this purpose. This has the advantage that an irq will be registered, and polling is no longer needed. Also, a dependency on platform callbacks is removed for this board. Signed-off-by: Axel Haslam [nsekhar@ti.com: minor commit message edit] Signed-off-by: Sekhar Nori --- arch/arm/mach-davinci/board-da830-evm.c | 41 +++++++------------------ 1 file changed, 11 insertions(+), 30 deletions(-) diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c index 5db09014f55a..58075627c6df 100644 --- a/arch/arm/mach-davinci/board-da830-evm.c +++ b/arch/arm/mach-davinci/board-da830-evm.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -204,22 +205,16 @@ static const short da830_evm_mmc_sd_pins[] = { -1 }; -#define DA830_MMCSD_WP_PIN GPIO_TO_PIN(2, 1) -#define DA830_MMCSD_CD_PIN GPIO_TO_PIN(2, 2) - -static int da830_evm_mmc_get_ro(int index) -{ - return gpio_get_value(DA830_MMCSD_WP_PIN); -} - -static int da830_evm_mmc_get_cd(int index) -{ - return !gpio_get_value(DA830_MMCSD_CD_PIN); -} +static struct gpiod_lookup_table mmc_gpios_table = { + .dev_id = "da830-mmc.0", + .table = { + /* gpio chip 1 contains gpio range 32-63 */ + GPIO_LOOKUP("davinci_gpio.1", 2, "cd", GPIO_ACTIVE_LOW), + GPIO_LOOKUP("davinci_gpio.1", 1, "wp", GPIO_ACTIVE_LOW), + }, +}; static struct davinci_mmc_config da830_evm_mmc_config = { - .get_ro = da830_evm_mmc_get_ro, - .get_cd = da830_evm_mmc_get_cd, .wires = 8, .max_freq = 50000000, .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED, @@ -235,26 +230,12 @@ static inline void da830_evm_init_mmc(void) return; } - ret = gpio_request(DA830_MMCSD_WP_PIN, "MMC WP"); - if (ret) { - pr_warn("%s: can not open GPIO %d\n", - __func__, DA830_MMCSD_WP_PIN); - return; - } - gpio_direction_input(DA830_MMCSD_WP_PIN); - - ret = gpio_request(DA830_MMCSD_CD_PIN, "MMC CD\n"); - if (ret) { - pr_warn("%s: can not open GPIO %d\n", - __func__, DA830_MMCSD_CD_PIN); - return; - } - gpio_direction_input(DA830_MMCSD_CD_PIN); + gpiod_add_lookup_table(&mmc_gpios_table); ret = da8xx_register_mmcsd0(&da830_evm_mmc_config); if (ret) { pr_warn("%s: mmc/sd registration failed: %d\n", __func__, ret); - gpio_free(DA830_MMCSD_WP_PIN); + gpiod_remove_lookup_table(&mmc_gpios_table); } }