From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752633AbZHSSSj (ORCPT ); Wed, 19 Aug 2009 14:18:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751435AbZHSSSi (ORCPT ); Wed, 19 Aug 2009 14:18:38 -0400 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:55016 "EHLO www.etchedpixels.co.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751026AbZHSSSi (ORCPT ); Wed, 19 Aug 2009 14:18:38 -0400 Date: Wed, 19 Aug 2009 19:19:44 +0100 From: Alan Cox To: "Rick L. Vinyard, Jr." Cc: "Greg KH" , "Linux USB" , "LKML" Subject: Re: Purpose of parameter in sysfs binary read Message-ID: <20090819191944.23e6e0ee@lxorguk.ukuu.org.uk> In-Reply-To: <5ea7c6a46fa1e051d69a302fdc8961ac.squirrel@intranet.cs.nmsu.edu> References: <9f97a27ccc13bd63ce99be04018b6bde.squirrel@intranet.cs.nmsu.edu> <20090818151427.GA6295@kroah.com> <20090819170501.1dbd29a8@lxorguk.ukuu.org.uk> <5ea7c6a46fa1e051d69a302fdc8961ac.squirrel@intranet.cs.nmsu.edu> X-Mailer: Claws Mail 3.7.1 (GTK+ 2.14.7; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > But, in addition to sending keystroke output you can send a usb control > message to change the backlight color and an interrupt message to load a > bitmap as an image. Ok that actually fits the LCD interface model a bit better, but the LCD class right now is a hack inside of a single driver so eventually needs fixing > The bitmap itself is simple, but requires a specific format. Byte 0 must > be 0x03 followed by 31 bytes of null. The low bit of byte 32 is x,y (0,0) > second high bit is (0,1)... with low bit of byte 33 being (1,0)... How big is it and can it be used for general purpose graphics - I know the G19 is something like 320x240 but the G13 ?