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gpio: of: Improve kerneldoc 

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

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
hifive-unleashed-5.1
Thierry Reding 2017-07-24 16:57:23 +02:00 committed by Linus Walleij
parent 950d55f5bf
commit 67049c5050
2 changed files with 22 additions and 4 deletions
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7
drivers/gpio/gpiolib-of.c
View File

@ -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,

19
include/linux/gpio/driver.h
View File

@ -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