diff options
| author | Chen-Yu Tsai <wens@csie.org> | 2016-07-22 16:12:59 +0800 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2016-07-31 21:45:12 +0200 |
| commit | 4694dc56e974eac94d6a4aa07c3d4071bf64e28c (patch) | |
| tree | b203818288d5de6384553f733bfb2e3b7974e311 /drivers/gpio | |
| parent | 5c928d02044345b843202f23540c3765468c1d6f (diff) | |
sunxi: gpio: Add .xlate function for gpio phandle resolution
sunxi uses a 2 cell phandle for gpio bindings. Also there are no
seperate nodes for each pin bank.
Add a custom .xlate function to map gpio phandles to the correct
pin bank device. This fixes gpio_request_by_name usage.
Fixes: 7aa974858422 ("dm: sunxi: Modify the GPIO driver to support driver
model")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/sunxi_gpio.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpio/sunxi_gpio.c b/drivers/gpio/sunxi_gpio.c index 94abbeb39a..e8accaa333 100644 --- a/drivers/gpio/sunxi_gpio.c +++ b/drivers/gpio/sunxi_gpio.c @@ -19,6 +19,7 @@ #include <asm/io.h> #include <asm/gpio.h> #include <dm/device-internal.h> +#include <dt-bindings/gpio/gpio.h> DECLARE_GLOBAL_DATA_PTR; @@ -215,12 +216,27 @@ static int sunxi_gpio_get_function(struct udevice *dev, unsigned offset) return GPIOF_FUNC; } +static int sunxi_gpio_xlate(struct udevice *dev, struct gpio_desc *desc, + struct fdtdec_phandle_args *args) +{ + int ret; + + ret = device_get_child(dev, args->args[0], &desc->dev); + if (ret) + return ret; + desc->offset = args->args[1]; + desc->flags = args->args[2] & GPIO_ACTIVE_LOW ? GPIOD_ACTIVE_LOW : 0; + + return 0; +} + static const struct dm_gpio_ops gpio_sunxi_ops = { .direction_input = sunxi_gpio_direction_input, .direction_output = sunxi_gpio_direction_output, .get_value = sunxi_gpio_get_value, .set_value = sunxi_gpio_set_value, .get_function = sunxi_gpio_get_function, + .xlate = sunxi_gpio_xlate, }; /** |