Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031015AbWKPIpH (ORCPT ); Thu, 16 Nov 2006 03:45:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1031076AbWKPIpH (ORCPT ); Thu, 16 Nov 2006 03:45:07 -0500 Received: from wx-out-0506.google.com ([66.249.82.236]:14974 "EHLO wx-out-0506.google.com") by vger.kernel.org with ESMTP id S1031015AbWKPIpE (ORCPT ); Thu, 16 Nov 2006 03:45:04 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=KxZpjKAT04SUj+8TU8T53YPUk/f0JaV2N1lQpc5+smHNkBgeNl32oyb3SRSAGswkaHJGL782VHXQ+H4u17Lo18IkJLhriXRZpJ4aK1XgPSAnihW3CE3qfNE9gfaWyRFyIFo5aFvygzx1NA8RiP15oMsbC56RDxBBftT3yd15Ofc= Message-ID: <653402b90611160045s6ddf1305jdb262ee55b0f16bf@mail.gmail.com> Date: Thu, 16 Nov 2006 09:45:03 +0100 From: "Miguel Ojeda" To: "James Simmons" Subject: Re: ACPI output/lcd/auxdisplay mess Cc: "Linux Kernel Mailing List" , "Linux Fbdev development list" , "Luming Yu" , "Andrew Zabolotny" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <653402b90611141426y6db15a3bh8ea59f89c8f1bb39@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1661 Lines: 37 On 11/15/06, James Simmons wrote: > > > Well, we were aware of video/backlight/* (read below). Anyway, > > auxdisplay doesn't create a class; it did in first versions, but right > > now it behaves just like a framebuffer, no classes in the playground > > (maybe you read a old version?). > ... > > However, auxdisplay means "auxiliary display device drivers", not _the > > display_. In such folder we can put every > > auxiliar-optional-secundary-rare display (not just LCDs, framebuffers, > > ...) who has special requirements (like parport wiring, fixed refresh > > rate, different properties...). Also, things like "set_contrast", > > "max_constrast", "set_power"... didn't seem very appropriate. > > Is it a framebuffer device ? The framebuffer layer is abstracted to work > with such devices. > cfag12864bcfb is a "fbdev" (actually, it is a "fb wrapper" for cfag12864b, so it behaves like a framebuffer, although it is not an usual framebuffer. f.e. it has asynchronous refresh rate, a mmaped page to appear to be a fb...). Still, it is not the front panel lcd of any specific device like PDA, so people that expects only their primary video/ displays may be confused if it appears at such section. So we decided to go away from video/. Maybe we can change the description, as right now it only refers to front panel lcds. -- Miguel Ojeda http://maxextreme.googlepages.com/index.htm - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/