I do not have a dual codec cs4281 driver. i do not believe that any of our customers ever created such a design either, so not 100% sure that the h/w will all work as spec'ed, but I have no idea... might though. officially cirrus did not support >1 codec with the cs4281. i do know that the linux driver will support multiple cs4281/single codec systems, up to 4 i believe was tested external to cirrus. tom woller
-----Original Message----- From: Takashi Iwai [mailto:[EMAIL PROTECTED]] Sent: Wednesday, May 22, 2002 1:12 PM To: tomasz motylewski Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; peter wachtendorf Subject: Re: [Alsa-devel] Linux driver for cs4281 with TWO cs4299 codecs? Hi, At Wed, 22 May 2002 17:59:55 +0200 (CEST), tomasz motylewski wrote: > > > I hope you do not mind that I have contacted you directly. > > I would like to ask whether anyone has developed a driver for cs4281 working in > a dual codec sound card. > > We have developed such a card, and it works fine with a single cs4299 codec, > but current alsa-driver-0.9.0rc1 fails with: > > ALSA ../alsa-kernel/pci/cs4281.c:1455: DLLRDY not seen > CS4281 soundcard not found or device busy > > when we connect another codec configured as slave (no quartz signal on > secondary, but SYNC, BIT_CLK, SDATA_OUT, SDATA_IN, RESET connected). > > I have tried to increase the timeout to 1 s, but without any result. > > Any advice? ALSA driver still doesn't support secondary codec, so most likely it's a driver problem. according to the cirrus' doc, ASDI2E and TCID must be set for the secondary codec before the loop checking DLLRDY. ok, now i did a very very quick hack. could you try the attached patch? (you'll need to pass the module option snd_dual_codec=1) it doesn't change the TCID value (it was set to 1). it might be different value. tune as you like. Takashi _______________________________________________________________ Don't miss the 2002 Sprint PCS Application Developer's Conference August 25-28 in Las Vegas -- http://devcon.sprintpcs.com/adp/index.cfm _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
