From f7f611f2b1dc69547d425de0daeac548add2c761 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 8 Jul 2020 09:11:49 +0200 Subject: ARM: s3c24xx: leds: Convert to use GPIO descriptors This converts the s3c24xx LED driver to use GPIO descriptors and also modify all board files to account for these changes by registering the appropriate GPIO tables for each board. The driver was using a custom flag to indicate open drain (tristate) but this can be handled by standard descriptor machine tables. The driver was setting non-pull-up for the pin using the custom S3C24xx GPIO API, but this is a custom pin control system used by the S3C24xx and no generic GPIO function, so this has simply been pushed back into the respective board files. Signed-off-by: Linus Walleij Acked-by: Jacek Anaszewski Signed-off-by: Krzysztof Kozlowski --- arch/arm/mach-s3c24xx/common-smdk.c | 67 +++++++++++++++++++++++++------------ 1 file changed, 45 insertions(+), 22 deletions(-) (limited to 'arch/arm/mach-s3c24xx/common-smdk.c') diff --git a/arch/arm/mach-s3c24xx/common-smdk.c b/arch/arm/mach-s3c24xx/common-smdk.c index 58e30cad386c..75064dfaceb1 100644 --- a/arch/arm/mach-s3c24xx/common-smdk.c +++ b/arch/arm/mach-s3c24xx/common-smdk.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include @@ -44,29 +45,53 @@ /* LED devices */ +static struct gpiod_lookup_table smdk_led4_gpio_table = { + .dev_id = "s3c24xx_led.0", + .table = { + GPIO_LOOKUP("GPF", 4, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN), + { }, + }, +}; + +static struct gpiod_lookup_table smdk_led5_gpio_table = { + .dev_id = "s3c24xx_led.1", + .table = { + GPIO_LOOKUP("GPF", 5, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN), + { }, + }, +}; + +static struct gpiod_lookup_table smdk_led6_gpio_table = { + .dev_id = "s3c24xx_led.2", + .table = { + GPIO_LOOKUP("GPF", 6, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN), + { }, + }, +}; + +static struct gpiod_lookup_table smdk_led7_gpio_table = { + .dev_id = "s3c24xx_led.3", + .table = { + GPIO_LOOKUP("GPF", 7, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN), + { }, + }, +}; + static struct s3c24xx_led_platdata smdk_pdata_led4 = { - .gpio = S3C2410_GPF(4), - .flags = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE, .name = "led4", .def_trigger = "timer", }; static struct s3c24xx_led_platdata smdk_pdata_led5 = { - .gpio = S3C2410_GPF(5), - .flags = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE, .name = "led5", .def_trigger = "nand-disk", }; static struct s3c24xx_led_platdata smdk_pdata_led6 = { - .gpio = S3C2410_GPF(6), - .flags = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE, .name = "led6", }; static struct s3c24xx_led_platdata smdk_pdata_led7 = { - .gpio = S3C2410_GPF(7), - .flags = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE, .name = "led7", }; @@ -179,27 +204,25 @@ static struct platform_device __initdata *smdk_devs[] = { &smdk_led7, }; -static const struct gpio smdk_led_gpios[] = { - { S3C2410_GPF(4), GPIOF_OUT_INIT_HIGH, NULL }, - { S3C2410_GPF(5), GPIOF_OUT_INIT_HIGH, NULL }, - { S3C2410_GPF(6), GPIOF_OUT_INIT_HIGH, NULL }, - { S3C2410_GPF(7), GPIOF_OUT_INIT_HIGH, NULL }, -}; - void __init smdk_machine_init(void) { - /* Configure the LEDs (even if we have no LED support)*/ - - int ret = gpio_request_array(smdk_led_gpios, - ARRAY_SIZE(smdk_led_gpios)); - if (!WARN_ON(ret < 0)) - gpio_free_array(smdk_led_gpios, ARRAY_SIZE(smdk_led_gpios)); - if (machine_is_smdk2443()) smdk_nand_info.twrph0 = 50; s3c_nand_set_platdata(&smdk_nand_info); + /* Disable pull-up on the LED lines */ + s3c_gpio_setpull(S3C2410_GPF(4), S3C_GPIO_PULL_NONE); + s3c_gpio_setpull(S3C2410_GPF(5), S3C_GPIO_PULL_NONE); + s3c_gpio_setpull(S3C2410_GPF(6), S3C_GPIO_PULL_NONE); + s3c_gpio_setpull(S3C2410_GPF(7), S3C_GPIO_PULL_NONE); + + /* Add lookups for the lines */ + gpiod_add_lookup_table(&smdk_led4_gpio_table); + gpiod_add_lookup_table(&smdk_led5_gpio_table); + gpiod_add_lookup_table(&smdk_led6_gpio_table); + gpiod_add_lookup_table(&smdk_led7_gpio_table); + platform_add_devices(smdk_devs, ARRAY_SIZE(smdk_devs)); s3c_pm_init(); -- cgit v1.2.3