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Commit 67049c50 authored by Thierry Reding's avatar Thierry Reding Committed by Linus Walleij
Browse files

gpio: of: Improve kerneldoc 



Add descriptions for missing fields and fix up some parameter references
to match the code.

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 950d55f5

drivers/gpio/gpiolib-of.c

+3 −4
Original line number Diff line number Diff line
@@ -273,14 +273,13 @@ static int of_gpiochip_scan_gpios(struct gpio_chip *chip) 
}



/**

 * of_gpio_simple_xlate - translate gpio_spec to the GPIO number and flags

 * of_gpio_simple_xlate - translate gpiospec to the GPIO number and flags

 * @gc:		pointer to the gpio_chip structure

 * @np:		device node of the GPIO chip

 * @gpio_spec:	gpio specifier as found in the device tree

 * @gpiospec:	GPIO specifier as found in the device tree

 * @flags:	a flags pointer to fill in

 *

 * This is simple translation function, suitable for the most 1:1 mapped

 * gpio chips. This function performs only one sanity check: whether gpio

 * GPIO chips. This function performs only one sanity check: whether GPIO

 * is less than ngpios (that is specified in the gpio_chip).

 */

int of_gpio_simple_xlate(struct gpio_chip *gc,

include/linux/gpio/driver.h

+19 −0
Original line number Diff line number Diff line
@@ -180,8 +180,27 @@ struct gpio_chip { 
	 * If CONFIG_OF is enabled, then all GPIO controllers described in the

	 * device tree automatically may have an OF translation

	 */



	/**

	 * @of_node:

	 *

	 * Pointer to a device tree node representing this GPIO controller.

	 */

	struct device_node *of_node;



	/**

	 * @of_gpio_n_cells:

	 *

	 * Number of cells used to form the GPIO specifier.

	 */

	int of_gpio_n_cells;



	/**

	 * @of_xlate:

	 *

	 * Callback to translate a device tree GPIO specifier into a chip-

	 * relative GPIO number and flags.

	 */

	int (*of_xlate)(struct gpio_chip *gc,

			const struct of_phandle_args *gpiospec, u32 *flags);

#endif