From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: PATCH] SPDIF out clock sync for via8235 / ALC650 Date: Mon, 03 Feb 2003 12:26:53 +0100 Sender: alsa-devel-admin@lists.sourceforge.net Message-ID: References: <200212302130.gBULUVp24791@ann-arbor.fmfts.com> <200302021203.h12C32409925@ann-arbor.fmfts.com> <3E3E462E.B2EDC7D8@lysator.liu.se> <3E3E4D63.8BFEC97F@lysator.liu.se> Mime-Version: 1.0 (generated by SEMI 1.14.4 - "Hosorogi") Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <3E3E4D63.8BFEC97F@lysator.liu.se> Errors-To: alsa-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: David =?ISO-8859-1?Q?Bj=F6rkevik?= Cc: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org At Mon, 03 Feb 2003 12:07:15 +0100, David Björkevik wrote: > > Thank you for trying to help me fix this. > > Takashi Iwai wrote: > > > This did not work for me. Using rc7 my DAC does not lock to a signal > > > using any combination of spdif/default output or AC97-SPSA setting. > > > > > > When applying jgotts patch to rc6 I managed to get lock on some > > > combinations, but the signal still seemed strange and my DAC did not > > > produce any sound. > > > > hmm. > > > > the behavior of via82xx driver depends on the chip model. > > hence, first, please check your chip model listed on > > /proc/asound/cards. > > This gives me > > 0 [VIA ]: VIA8233 - VIA 823x rev80 > VIA 823x rev80 at 0xd800, irq 22 > > This would indicate a 8235-chip (according to the defines in > via82xx.c)... yep, there was a bug in the driver. already fixed on cvs. but it doesn't matter for the behavior of the driver. the audio part of 8235 is identical with 8233. > > if you have another VIA823x, namely, 8233, 8233C and 8235 chips, you > > must have valid DSX channels. > > I guess this will make me sound stupid, but I don't know what a DSX > channel is or how to get valid ones =) the 8233 (and 8235) chip has two different paths for playback. one is called DSX (direct sound) and 8233 has 4 channels. by using these channels, you can do up to 4 playbacks simultaneously. the spdif is output from the DSX3 channel usually with ac97 slot 10/11. another is the "multi-channel" playback, which supports the 4 or 6 channels outputs. this is supported on every 823x chip. it seems these two outputs are exclusive. if DSX is used, multi-chanenl cannot be used, and vice versa. Takashi ------------------------------------------------------- This SF.NET email is sponsored by: SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See! http://www.vasoftware.com