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Subject[PATCH v2 08/12] Documentation: leds: Add description of brightness setting API
Date
This patch adds description of the LED subsystem API for
setting an LED brightness.

Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
---
Documentation/leds/leds-class.txt | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/Documentation/leds/leds-class.txt b/Documentation/leds/leds-class.txt
index 62261c0..d406d98 100644
--- a/Documentation/leds/leds-class.txt
+++ b/Documentation/leds/leds-class.txt
@@ -52,6 +52,19 @@ above leaves scope for further attributes should they be needed. If sections
of the name don't apply, just leave that section blank.


+Brightness setting API
+======================
+
+LED subsystem core exposes following API for setting brightness:
+
+ - led_set_brightness : it is guaranteed not to sleep, passing LED_OFF stops
+ blinking,
+ - led_set_brightness_sync : for use cases when immediate effect is desired -
+ it can block the caller for the time required for accessing
+ device registers and can sleep, passing LED_OFF stops hardware
+ blinking, returns -EBUSY if software blink fallback is enabled.
+
+
Hardware accelerated blink of LEDs
==================================

--
1.7.9.5


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