path: root/include/linux/led-class-flash.h
diff options
authorJacek Anaszewski <jacek.anaszewski@gmail.com>2019-06-09 20:19:03 +0200
committerJacek Anaszewski <jacek.anaszewski@gmail.com>2019-07-25 20:07:50 +0200
commitb2b998c0f944993c9ef435569651e407d607af41 (patch)
tree28d4f69784e203114b5feb8b5bde12510e9c42ee /include/linux/led-class-flash.h
parentleds: is31fl319x: simplify getting the adapter of a client (diff)
leds: class: Improve LED and LED flash class registration API
Replace of_led_classdev_register() with led_classdev_register_ext(), which accepts easily extendable struct led_init_data, instead of the fixed struct device_node argument. The latter can be now passed in an fwnode property of the struct led_init_data. The modification is driven by the need for passing additional arguments required for the forthcoming generic mechanism for composing LED names. Currently the LED name is conveyed in the "name" char pointer property of the struct led_classdev. This is redundant since LED class device name is accessible throughout the whole LED class device life time via associated struct device's kobj->name property. The change will not break any existing clients since the patch alters also existing led_classdev{_flash}_register() macro wrappers, that pass NULL in place of init_data, which leads to using legacy name initialization path basing on the struct led_classdev's "name" property. Three existing users of devm_of_led_classdev_registers() are modified to use devm_led_classdev_register(), which will not impact their operation since they in fact didn't need to pass struct device_node on registration from the beginning. Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com> Cc: Baolin Wang <baolin.wang@linaro.org> Cc: Dan Murphy <dmurphy@ti.com> Cc: Daniel Mack <daniel@zonque.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Oleh Kravchenko <oleg@kaa.org.ua> Cc: Sakari Ailus <sakari.ailus@linux.intel.com> Cc: Simon Shields <simon@lineageos.org> Acked-by: Pavel Machek <pavel@ucw.cz>
Diffstat (limited to 'include/linux/led-class-flash.h')
1 files changed, 10 insertions, 5 deletions
diff --git a/include/linux/led-class-flash.h b/include/linux/led-class-flash.h
index f52713f0a269..1e824963af17 100644
--- a/include/linux/led-class-flash.h
+++ b/include/linux/led-class-flash.h
@@ -86,15 +86,20 @@ static inline struct led_classdev_flash *lcdev_to_flcdev(
- * led_classdev_flash_register - register a new object of led_classdev class
- * with support for flash LEDs
- * @parent: the flash LED to register
+ * led_classdev_flash_register_ext - register a new object of LED class with
+ * init data and with support for flash LEDs
+ * @parent: LED flash controller device this flash LED is driven by
* @fled_cdev: the led_classdev_flash structure for this device
+ * @init_data: the LED class flash device initialization data
* Returns: 0 on success or negative error value on failure
-extern int led_classdev_flash_register(struct device *parent,
- struct led_classdev_flash *fled_cdev);
+extern int led_classdev_flash_register_ext(struct device *parent,
+ struct led_classdev_flash *fled_cdev,
+ struct led_init_data *init_data);
+#define led_classdev_flash_register(parent, fled_cdev) \
+ led_classdev_flash_register_ext(parent, fled_cdev, NULL)
* led_classdev_flash_unregister - unregisters an object of led_classdev class