snd_vortex_capture_ops is not defined in au88x0_pcm.c


snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
&snd_vortex_playback_ops);
if (idx == VORTEX_PCM_ADB)
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
&snd_vortex_playback_ops);

Linux PCI ID Repository

Subsystems for device 12eb:0002: Vortex 2

http://pciids.sourceforge.net/iii/?i=12eb0002

There is no SPDIFOUT2 or SPDIFOUT3

/* Make playback routes. */
for (i = 0; i < nr_ch; i++) {
.
.
.
#ifndef CHIP_AU8820
.
.
.
if (stream->type == VORTEX_PCM_SPDIF)
vortex_route(vortex, en, 0x14,
     ADB_DMA(stream->dma),
     ADB_SPDIFOUT(i));
#endif
}

VORTEX_IS_QUAD(X) will alway be non-zero.

And the following code in the routine will send PCM to AC97 link to non-existing SDAC for au8820 (copy front channels to rear channels)


static int
vortex_adb_allocroute(vortex_t * vortex, int dma, int nr_ch, int dir, int type)
{
...

if (stream->type != VORTEX_PCM_SPDIF && stream->type != VORTEX_PCM_A3D) {
ch_top = (VORTEX_IS_QUAD(vortex) ? 4 : 2);
for (i = nr_ch; i < ch_top; i++) {
vortex_connection_mixin_mix(vortex, en,
    mix[i % nr_ch],
    MIX_PLAYB(i), 0);
#ifndef CHIP_AU8820
vortex_connection_mixin_mix(vortex, en,
    mix[i % nr_ch],
    MIX_SPDIF(i % 2),
0);
vortex_mix_setinputvolumebyte(vortex,
      MIX_SPDIF(i % 2),
      mix[i % nr_ch],
      MIX_DEFIGAIN);
#endif
}
}