From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Jones Subject: Re: Ambient Light Sensor? Date: Tue, 20 Mar 2007 11:13:42 -0400 Message-ID: <20070320151342.GA8667@redhat.com> References: <200703191341.41823.lenb@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mx1.redhat.com ([66.187.233.31]:33387 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933679AbXCTPO5 (ORCPT ); Tue, 20 Mar 2007 11:14:57 -0400 Content-Disposition: inline In-Reply-To: <200703191341.41823.lenb@kernel.org> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Len Brown Cc: linux-acpi@vger.kernel.org On Mon, Mar 19, 2007 at 01:41:41PM -0400, Len Brown wrote: > Has anybody seen ACPI-based ambient light sensor support on a commercial system? > > You'd recognize it by a device with PNPid ACPI0008 exported via the AML device tree. > > I've seen it on an Intel Capell Valley CRB, but I was wondering > if anybody is using it in the "real world" yet. > > I've seen just the dmesg from a MacBook Pro on the web > suggesting that system exports ACPI0008: > http://www.uwsg.iu.edu/hypermail/linux/kernel/0703.0/1475.html Right. Under OSX, it uses it to adjust the keyboard backlight. (It may also do something fancy wrt gamma correction with the built-in webcam) Dave -- http://www.codemonkey.org.uk