From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Pradeep Subrahmanion <subrahmanion.pradeep@gmail.com>
Cc: rpurdie@rpsys.net, FlorianSchandinat@gmx.de,
akpm@linux-foundation.org, linux-fbdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Added backlight driver for Acer Aspire 4736
Date: Mon, 12 Mar 2012 17:51:30 +0000 [thread overview]
Message-ID: <20120312175130.GA18002@srcf.ucam.org> (raw)
In-Reply-To: <1331608337.2267.67.camel@debian.Gayathri>
On Mon, Mar 12, 2012 at 11:12:17PM -0400, Pradeep Subrahmanion wrote:
> Hi ,
>
> Brightness control was not working on Acer Aspire 4736 using default ACPI interface. acer-acpi also do not support 4730 series since it uses new WMI interface.
> This driver adds brightness control by accessing the LBB PCI configuration register. This approach may also work on other laptops in 4730 series .But currently , it is only tested for
> Aspire 4736.
1) If there's a WMI interface to brightness control, why not use that?
2) You're hitting a hardware resource that belongs to the i915 driver,
which may well cause problems.
3) Why does the ACPI interface not work? Can you attach the acpidump
output?
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2012-03-12 17:51 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-13 3:12 [PATCH] Added backlight driver for Acer Aspire 4736 Pradeep Subrahmanion
2012-03-12 17:51 ` Matthew Garrett [this message]
2012-03-13 12:09 ` Pradeep Subrahmanion
2012-03-13 12:47 ` Matthew Garrett
2012-03-13 13:29 ` Pradeep Subrahmanion
[not found] ` <CABNxG=Dqg26EHmC3vibf3-SjVhby1qgQfMniQObUeh9eJ6SwEw@mail.gmail.com>
2012-03-13 13:34 ` Matthew Garrett
2012-03-14 1:24 ` Pradeep Subrahmanion
2012-03-13 23:12 ` joeyli
2012-03-14 2:43 ` Pradeep Subrahmanion
2012-03-14 5:51 ` joeyli
2012-03-14 6:17 ` Pradeep Subrahmanion
2012-03-15 8:05 ` joeyli
2012-03-18 5:10 ` Pradeep Subrahmanion
2012-03-19 2:01 ` joeyli
2012-03-19 11:33 ` Pradeep Subrahmanion
2012-03-20 3:55 ` joeyli
2012-03-20 11:09 ` joeyli
2012-03-20 18:55 ` Pradeep Subrahmanion
2012-03-21 3:00 ` joeyli
2012-03-21 19:09 ` Pradeep Subrahmanion
2012-03-22 1:33 ` joeyli
2012-03-22 2:33 ` Pradeep Subrahmanion
2012-03-22 3:25 ` joeyli
2012-03-22 3:32 ` Pradeep Subrahmanion
2012-03-22 3:54 ` joeyli
2012-03-22 5:56 ` Pradeep Subrahmanion
2012-03-22 9:34 ` joeyli
2012-03-22 16:17 ` Pradeep Subrahmanion
2012-03-23 3:36 ` Pradeep Subrahmanion
2012-03-23 4:25 ` joeyli
2012-03-18 5:12 ` Pradeep Subrahmanion
2012-03-12 23:07 ` Joe Perches
-- strict thread matches above, loose matches on Subject: below --
2012-03-13 3:16 Pradeep Subrahmanion
[not found] <CABNxG=CU+bOWUauLYfcS2vtFqKvXA-9axgokNoYz+KuU1Mzztw@mail.gmail.com>
2012-03-11 19:42 ` Florian Tobias Schandinat
2012-03-13 3:10 ` joeyli
2012-03-13 13:12 ` Pradeep Subrahmanion
2012-03-13 4:35 ` joeyli
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