From d2c07e56ab3ef0cec99335aa8dafbed691d23739 Mon Sep 17 00:00:00 2001 From: Patrick Delaunay Date: Mon, 13 Jan 2020 11:35:08 +0100 Subject: gpio: add ops to get dir flags Add the ops for GPIO driver get_dir_flags(), allows to get dynamically the current gpio configuration; it is used by the API function dm_gpio_get_dir_flags(). When these optional ops are absent, the gpio uclass continues to use the mandatory ops (direction_output, direction_input, get_value) and value of desc->flags to manage only the main dir flags: - GPIOD_IS_IN - GPIOD_IS_OUT - GPIOD_IS_OUT_ACTIVE - GPIOD_ACTIVE_LOW Signed-off-by: Patrick Delaunay Reviewed-by: Simon Glass --- include/asm-generic/gpio.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include') diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index 42c9ab29ca..7c1f71b1ac 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -297,6 +297,21 @@ struct dm_gpio_ops { */ int (*xlate)(struct udevice *dev, struct gpio_desc *desc, struct ofnode_phandle_args *args); + + /** + * get_dir_flags() - Get GPIO dir flags + * + * This function return the GPIO direction flags used. + * + * This method is optional. + * + * @dev: GPIO device + * @offset: GPIO offset within that device + * @flags: place to put the used direction flags by GPIO + * @return 0 if OK, -ve on error + */ + int (*get_dir_flags)(struct udevice *dev, unsigned int offset, + ulong *flags); }; /** -- cgit