From mboxrd@z Thu Jan 1 00:00:00 1970 From: Raymond Subject: Re: [Openvortex-dev] aplay - How to use device 3 of card 0 ? Date: Mon, 07 Mar 2005 15:54:53 +0800 Message-ID: <422C08CD.2000200@netvigator.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: alsa-devel-admin@lists.sourceforge.net Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: openvortex-dev@nongnu.org Cc: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org >> 2) How did you perform your "WT DMA" test ? >Using: >aplay -d hw:0,1 test.wav >The result for me was that aplay did newer finish, because data was >never being transfered. After some time it timed out with an error. http://savannah.nongnu.org/cgi-bin/viewcvs/openvortex/alsa/pci/au88x0/au88x0_pcm.c.diff?r1=1.9&r2=1.10 #define VORTEX_PCM_TYPE(x) (x->name[40]) http://cvs.sourceforge.net/viewcvs.py/alsa/alsa-kernel/pci/au88x0/au88x0_pcm.c?rev=1.6&view=markup snd_vortex_new_pcm() { ... strcpy(pcm->name, vortex_pcm_name[idx]); chip->pcm[idx] = pcm; // This is an evil hack, but it saves a lot of duplicated code. VORTEX_PCM_TYPE(pcm) = idx; pcm->private_data = chip; ... } Added debug statement in snd_vortex_pcm_open() /* Avoid PAGE_SIZE boundary to fall inside of a period. */ if ((err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES)) < 0) return err; + printk(KERN_INFO "vortex_pcm_open() %d\n",VORTEX_PCM_TYPE(substream->pcm)); if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) { Don't know why VORTEX_PCM_TYPE(substream->pcm) is always zero when using "aplay -d hw:0,1 test.wav" or "aplay -d hw:0,3 test.wav" ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click