ALSA: Implement channel maps for standard onboard AC97 drivers
Just set the channel maps depending on the hardware availability.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
index 5c41152..848102e 100644
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -1541,6 +1541,26 @@
snd_dma_pci_data(chip->pci),
rec->prealloc_size, rec->prealloc_max_size);
+ if (rec->ac97_idx == ICHD_PCMOUT && rec->playback_ops) {
+ struct snd_pcm_chmap *chmap;
+ int chs = 2;
+ if (rec->ac97_idx == ICHD_PCMOUT) {
+ if (chip->multi8)
+ chs = 8;
+ else if (chip->multi6)
+ chs = 6;
+ else if (chip->multi4)
+ chs = 4;
+ }
+ err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+ snd_pcm_alt_chmaps, chs, 0,
+ &chmap);
+ if (err < 0)
+ return err;
+ chmap->channel_mask = SND_PCM_CHMAP_MASK_2468;
+ chip->ac97[0]->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
+ }
+
return 0;
}