Hi Sakari,
Thanks for the review.
On 10/16/2015 05:36 PM, Sakari Ailus wrote:
Hi Jacek,
On Wed, Oct 07, 2015 at 11:10:44AM +0200, Jacek Anaszewski wrote:
This patch adds description of the LED subsystem API for
setting an LED brightness.
Signed-off-by: Jacek Anaszewski <j.anaszewski@xxxxxxxxxxx>
---
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 -
Over 80 characters per line.
There are exactly 80 characters, checkpatch.pl doesn't complain. You
probably counted patch line length, which includes leading '+'.
Acked-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
+ 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
==================================
--
Best Regards,
Jacek Anaszewski
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