diff options
| -rw-r--r-- | drivers/gpio/gpiolib-of.c | 7 | ||||
| -rw-r--r-- | include/linux/gpio/driver.h | 19 |
2 files changed, 22 insertions, 4 deletions
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index 8cde02ed5fd5..bfcd20699ec8 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -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, diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index ad4150d075c3..fe66c9306caf 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -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 |
