From 1d08b4b7439f6538d37eb603cee83842bad23bc5 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 5 Jan 2015 20:05:34 -0700 Subject: dm: exynos: Add a GPIO translation function This deals with the polarity bit. It also changes the GPIO devices so that the correct device tree node is linked to each one. This allows us to use the new uclass phandle functionality to implement a proper GPIO binding. Signed-off-by: Simon Glass --- drivers/gpio/s5p_gpio.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'drivers/gpio') diff --git a/drivers/gpio/s5p_gpio.c b/drivers/gpio/s5p_gpio.c index 6c41a42c177..0a245ba18ad 100644 --- a/drivers/gpio/s5p_gpio.c +++ b/drivers/gpio/s5p_gpio.c @@ -13,6 +13,7 @@ #include #include #include +#include DECLARE_GLOBAL_DATA_PTR; @@ -275,12 +276,22 @@ static int exynos_gpio_get_function(struct udevice *dev, unsigned offset) return GPIOF_FUNC; } +static int exynos_gpio_xlate(struct udevice *dev, struct gpio_desc *desc, + struct fdtdec_phandle_args *args) +{ + desc->offset = args->args[0]; + desc->flags = args->args[1] & GPIO_ACTIVE_LOW ? GPIOD_ACTIVE_LOW : 0; + + return 0; +} + static const struct dm_gpio_ops gpio_exynos_ops = { .direction_input = exynos_gpio_direction_input, .direction_output = exynos_gpio_direction_output, .get_value = exynos_gpio_get_value, .set_value = exynos_gpio_set_value, .get_function = exynos_gpio_get_function, + .xlate = exynos_gpio_xlate, }; static int gpio_exynos_probe(struct udevice *dev) @@ -342,7 +353,7 @@ static int gpio_exynos_bind(struct udevice *parent) plat->bank_name, plat, -1, &dev); if (ret) return ret; - dev->of_offset = parent->of_offset; + dev->of_offset = node; } return 0; -- cgit v1.2.3