Re: [Openvortex-dev] aplay - How to use device 3 of card 0 ?

[Raymond]

> > 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"