From: Matthew Garrett <mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
To: Renato Caldas <seventhguardian-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: Re: Put acpi/backlight code into kernel
Date: Sat, 19 Sep 2009 20:54:00 +0100 [thread overview]
Message-ID: <20090919195400.GA4320@srcf.ucam.org> (raw)
In-Reply-To: <1caff7430909140300o775276ch890ff41b75181e50-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Mon, Sep 14, 2009 at 11:00:59AM +0100, Renato Caldas wrote:
> This kind of code doesn't belong in the nouveau driver, as you
> probably already know.
Sure it does. It's common for nvidia-based machines to use the GPU's
built-in backlight control, and when that's the case the appropriate
place for the control code is in the driver that touches the rest of
those registers - nouveau, in this case.
> But there are things called "platform drivers" that support all those
> non-standard features you may find on laptops, like radio switches,
> leds, ... and backlight. There is one such driver for my Asus laptop,
> which is called "asus-laptop".
When there's a platform interface, a platform driver is indeed the
correct answer. But in some cases (nvidia-based Sonys, for instance)
there's no platform interface to use.
--
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org
next prev parent reply other threads:[~2009-09-19 19:54 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-22 18:34 Put acpi/backlight code into kernel schmirrwurst-gM/Ye1E23mwN+BqQ9rBEUg
[not found] ` <200908222034.28782.schmirrwurst-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
2009-09-04 20:01 ` Matthew Garrett
[not found] ` <200909131945.16860.schmirrwurst@googlemail.com>
[not found] ` <20090913175159.GA26939@srcf.ucam.org>
[not found] ` <20090913175159.GA26939-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2009-09-13 18:09 ` schmirrwurst-gM/Ye1E23mwN+BqQ9rBEUg
[not found] ` <200909132009.37494.schmirrwurst-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
2009-09-13 22:13 ` Matthew Garrett
[not found] ` <20090913221350.GA31175-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2009-09-14 6:36 ` schmirrwurst-gM/Ye1E23mwN+BqQ9rBEUg
[not found] ` <200909140836.18074.schmirrwurst-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
2009-09-14 9:02 ` Maarten Maathuis
[not found] ` <6d4bc9fc0909140202q60a587c3pb22e3c2eb2ff2ff2-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-09-14 10:00 ` Renato Caldas
[not found] ` <1caff7430909140300o775276ch890ff41b75181e50-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-09-14 12:40 ` schmirrwurst-gM/Ye1E23mwN+BqQ9rBEUg
[not found] ` <200909141440.32260.schmirrwurst-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
2009-09-14 13:09 ` Renato Caldas
2009-09-19 19:54 ` Matthew Garrett [this message]
[not found] ` <20090919195400.GA4320-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2009-09-19 21:36 ` Renato Caldas
[not found] ` <1caff7430909191436k71708d4cs77423417353a47-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-09-19 22:28 ` Matthew Garrett
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