From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932099AbWCHTIM (ORCPT ); Wed, 8 Mar 2006 14:08:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932355AbWCHTIL (ORCPT ); Wed, 8 Mar 2006 14:08:11 -0500 Received: from ns.suse.de ([195.135.220.2]:11477 "EHLO mx1.suse.de") by vger.kernel.org with ESMTP id S932099AbWCHTIK (ORCPT ); Wed, 8 Mar 2006 14:08:10 -0500 Date: Wed, 08 Mar 2006 20:08:09 +0100 Message-ID: From: Takashi Iwai To: John Richard Moser Cc: Jaroslav Kysela , linux-kernel@vger.kernel.org Subject: Re: Sound userspace drivers (fishing for insight) In-Reply-To: <440F28C6.6050508@comcast.net> References: <440E5746.7070003@comcast.net> <440F0396.4050905@comcast.net> <440F28C6.6050508@comcast.net> User-Agent: Wanderlust/2.12.0 (Your Wildest Dreams) SEMI/1.14.6 (Maruoka) FLIM/1.14.7 (=?ISO-8859-4?Q?Sanj=F2?=) APEL/10.6 MULE XEmacs/21.5 (beta21) (corn) (+CVS-20050720) (i386-suse-linux) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org At Wed, 08 Mar 2006 13:56:06 -0500, John Richard Moser wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Takashi Iwai wrote: > > At Wed, 08 Mar 2006 11:17:26 -0500, > > John Richard Moser wrote: > >>>> into the kernel; with alsa it's written to a /proc interface, which > >>> Using /proc? Where? I've not noticed it :-) > >> I thought that was what /proc/asound/card0/ was for? :) > > > > /proc is not referred from alsa-lib, i.e. programs don't access them. > > It's just for users who want to read some information. > > > > This makes me wonder then how stuff is set up. There's no device, is > there a sound card syscall now? You must have /dev/snd/* files, and the access is via normal syscalls... Check strace of your program. Takashi