Commit 5f2e9507 authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Lee Jones
Browse files

leds: core: Introduce led_get_color_name() function 



This is similar to the existing led_colors[] array but is safer to use and
usable by everyone.

Getting string representations of color ids is useful for drivers
which are handling color IDs anyways, for example for the multicolor API.

Signed-off-by: default avatarThomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20240613-cros_ec-led-v3-1-500b50f41e0f@weissschuh.net


Signed-off-by: default avatarLee Jones <lee@kernel.org>
parent 1613e604

drivers/leds/led-core.c

+9 −0
Original line number Diff line number Diff line
@@ -534,6 +534,15 @@ int led_compose_name(struct device *dev, struct led_init_data *init_data, 
}

EXPORT_SYMBOL_GPL(led_compose_name);



const char *led_get_color_name(u8 color_id)

{

	if (color_id >= ARRAY_SIZE(led_colors))

		return NULL;



	return led_colors[color_id];

}

EXPORT_SYMBOL_GPL(led_get_color_name);



enum led_default_state led_init_default_state_get(struct fwnode_handle *fwnode)

{

	const char *state = NULL;

include/linux/leds.h

+10 −0
Original line number Diff line number Diff line
@@ -427,6 +427,16 @@ void led_sysfs_enable(struct led_classdev *led_cdev); 
int led_compose_name(struct device *dev, struct led_init_data *init_data,

		     char *led_classdev_name);



/**

 * led_get_color_name - get string representation of color ID

 * @color_id: The LED_COLOR_ID_* constant

 *

 * Get the string name of a LED_COLOR_ID_* constant.

 *

 * Returns: A string constant or NULL on an invalid ID.

 */

const char *led_get_color_name(u8 color_id);



/**

 * led_sysfs_is_disabled - check if LED sysfs interface is disabled

 * @led_cdev: the LED to query