From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mika Westerberg <mika.westerberg@linux.intel.com>
Subject: Re: [PATCH v4] ACPI / video: Add systems that should
 favour native backlight interface
Date: Tue, 18 Feb 2014 17:46:40 +0200
Message-ID: <20140218154640.GT5018@intel.com>
References: <5302F58C.1080001@intel.com> <20140218103442.GS5018@intel.com>
	<s5hfvngy2bh.wl%tiwai@suse.de> <1903167.TtlOFgMB6X@vostro.rjw.lan>
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To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Aaron Lu <aaron.lu@intel.com>, Theodore Tso <tytso@mit.edu>, Kevin Smith <thirdwiggin@gmail.com>, ACPI Devel Mailing List <linux-acpi@vger.kernel.org>, Takashi Iwai <tiwai@suse.de>, Peter Weber <bugs@ttyhoney.com>, "intel-gfx@lists.freedesktop.org" <intel-gfx@lists.freedesktop.org>, Vladimir Sherenkov <a_12300@mail.ru>, Matthew Garrett <mjg59@srcf.ucam.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Thomas Christensen <christensenthomas@gmail.com>, Lennart Poettering <lennart@poettering.net>, sov.info@mail.ru, "platform-driver-x86@vger.kernel.org" <platform-driver-x86@vger.kernel.org>
List-Id: linux-acpi@vger.kernel.org

On Tue, Feb 18, 2014 at 04:22:27PM +0100, Rafael J. Wysocki wrote:
> On Tuesday, February 18, 2014 02:31:46 PM Takashi Iwai wrote:
> > At Tue, 18 Feb 2014 12:34:42 +0200,
> > Mika Westerberg wrote:
> > > 
> > > On Tue, Feb 18, 2014 at 01:54:20PM +0800, Aaron Lu wrote:
> > > > +	{
> > > > +	.callback = video_set_use_native_backlight,
> > > > +	.ident = "HP EliteBook 2013 models",
> > > > +	.matches = {
> > > > +		DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
> > > > +		DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook "),
> > > > +		DMI_MATCH(DMI_PRODUCT_NAME, " G1"),
> > > > +		},
> > > > +	},
> > > 
> > > I see my device is listed here but the above doesn't really use native
> > > backlight because it is still in acpi_osi blacklist. Tried this and I can
> > > see both acpi_video0 and intel_backlight listed under /sys/class/backlight.
> > > Was this the intention?
> > 
> > The acpi_osi blacklist commit (2d4054d84224) has to be reverted, as I
> > mentioned earlier.  But the revert can be done individually after
> > merging this patch.  Rafael, could you care?
> 
> Done.  Please check the result in linux-pm.git/linux-next.

With your revert and this patch from Aaron, backlight on my HP EliteBook
Revolve G1 works fine, thanks!

Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>