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From: Pavel Machek <pavel@suse.cz>
To: Rodolfo Giometti <giometti@enneenne.com>
Cc: linux-kernel@vger.kernel.org, Richard Purdie <rpurdie@rpsys.net>
Subject: Re: [PATCH V3] led: Backlight trigger for led subsystem
Date: Tue, 7 Oct 2008 15:54:20 +0200	[thread overview]
Message-ID: <20081007135420.GB1592@ucw.cz> (raw)
In-Reply-To: <1223374230-18413-1-git-send-email-giometti@enneenne.com>

Hi!

> This patch set adds a new led trigger which emulates the backlight
> behaviour: the leds are turned off and on each time the display blanks
> and unblacks.
> 
> Since backlights are usually implemented with leds this patch set is
> useful for those drivers whose manage leds controller used as
> backlight controller.
> 
> The driver simply registers itself into the led subsystem and then the
> user may get backlight emulation by setting the "backlight"
> trigger. Moreover a driver, which usually manages more than one led,
> can use some leds as "led" and the others as "backlights" at user
> request.

We already have backlight subsystem, it can also handle display
brightness. Why not use that?


-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

  parent reply	other threads:[~2008-10-07 13:54 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-07 10:10 Rodolfo Giometti
2008-10-07 10:10 ` [PATCH 1/1] led: add a backlight emulation trigger Rodolfo Giometti
2008-10-13  8:28   ` Richard Purdie
2008-10-07 13:54 ` Pavel Machek [this message]
2008-10-07 15:20   ` [PATCH V3] led: Backlight trigger for led subsystem Rodolfo Giometti
2008-10-07 18:58     ` Pavel Machek
2008-10-07 19:21       ` Rodolfo Giometti
2008-10-07 19:56         ` Pavel Machek
2008-10-07 20:19           ` Rodolfo Giometti
2008-10-07 20:39             ` Mark Brown
2008-10-07 21:19               ` Pavel Machek
2008-10-07 21:32                 ` Rodolfo Giometti
2008-10-07 21:11           ` Henrique de Moraes Holschuh

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