From 0dac4d51f50e9252dbc00075cf65eeba57017926 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 5 Jan 2015 20:05:28 -0700 Subject: dm: gpio: Add a driver GPIO translation method Only the GPIO driver knows about the full GPIO device tree binding used by a device. Add a method to allow the driver to provide this information to the uclass, including the GPIO offset within the device and flags such as the polarity. Signed-off-by: Simon Glass --- drivers/gpio/gpio-uclass.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'drivers/gpio') diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c index 2f3c36b..0a4d9e4 100644 --- a/drivers/gpio/gpio-uclass.c +++ b/drivers/gpio/gpio-uclass.c @@ -7,6 +7,7 @@ #include #include #include +#include #include #include #include @@ -91,6 +92,21 @@ int gpio_lookup_name(const char *name, struct udevice **devp, return 0; } +int gpio_find_and_xlate(struct gpio_desc *desc, + struct fdtdec_phandle_args *args) +{ + struct dm_gpio_ops *ops = gpio_get_ops(desc->dev); + + /* Use the first argument as the offset by default */ + if (args->args_count > 0) + desc->offset = args->args[0]; + else + desc->offset = -1; + desc->flags = 0; + + return ops->xlate ? ops->xlate(desc->dev, desc, args) : 0; +} + static int dm_gpio_request(struct gpio_desc *desc, const char *label) { struct udevice *dev = desc->dev; -- cgit v1.1