linux-kernel - Re: [PATCH 1/1] PXAFB: Support for backlight control

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Message-ID: <20070222083204.GN4641@enneenne.com>
Date:	Thu, 22 Feb 2007 09:32:04 +0100
From:	Rodolfo Giometti <giometti@...eenne.com>
To:	Paul Sokolovsky <pmiscml@...il.com>
Cc:	linux-arm-kernel@...ts.arm.linux.org.uk,
	linux-kernel@...r.kernel.org,
	linux-fbdev-devel@...ts.sourceforge.net,
	Richard Purdie <rpurdie@...ys.net>
Subject: Re: [PATCH 1/1] PXAFB: Support for backlight control

On Wed, Feb 21, 2007 at 06:26:08PM +0200, Paul Sokolovsky wrote:
k>   Why? It's the same, except that it already exists, generic one (not
> limited to pxafb), and requires 1 function (too bad that C doesn't
> support lambda's):

Ah, ok.

>   I sent a bit of criticism for that too ;-). YMMV, but kernel
> solutions are just bound to be pretty simple and generic and lack
> any "niceties", which you'd likely want to do anyway eventually. For
> example, what if you'll want to implement "fade out" effect for
> keyboard backlight? Doing it in adhoc manner in kernel? Whereas with
> the LCD classdev, you can write generic "fade out" trigger and
> attach/detach it from userspace.

I agree. I just wish to add a backlight support for my LCD and
minikeypad.

What do you suggest to me in order to accomplish such task?

Thanks for your suggestions,

Rodolfo

-- 

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