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Message-ID: <20151016153629.GM26916@valkosipuli.retiisi.org.uk>
Date: Fri, 16 Oct 2015 18:36:29 +0300
From: Sakari Ailus <sakari.ailus@....fi>
To: Jacek Anaszewski <j.anaszewski@...sung.com>
Cc: linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org,
pavel@....cz, sakari.ailus@...ux.intel.com, andrew@...n.ch
Subject: Re: [PATCH v3 06/10] Documentation: leds: Add description of
brightness setting API
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@...sung.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 -
Over 80 characters per line.
Acked-by: Sakari Ailus <sakari.ailus@...ux.intel.com>
> + 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
> ==================================
>
--
Regards,
Sakari Ailus
e-mail: sakari.ailus@....fi XMPP: sailus@...iisi.org.uk
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