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>

1 files changed, 9 insertions, 0 deletions

diff --git a/sound/pci/atiixp.c b/sound/pci/atiixp.c
index c744df5bb1c6..368df8b0853e 100644
--- a/sound/pci/atiixp.c
+++ b/sound/pci/atiixp.c
@@ -1250,6 +1250,7 @@ static struct atiixp_dma_ops snd_atiixp_spdif_dma_ops = {
 static int __devinit snd_atiixp_pcm_new(struct atiixp *chip)
 {
         struct snd_pcm *pcm;
+        struct snd_pcm_chmap *chmap;
         struct snd_ac97_bus *pbus = chip->ac97_bus;
         int err, i, num_pcms;
 
@@ -1293,6 +1294,14 @@ static int __devinit snd_atiixp_pcm_new(struct atiixp *chip)
                                               snd_dma_pci_data(chip->pci),
                                               64*1024, 128*1024);
 
+        err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+                                     snd_pcm_alt_chmaps, chip->max_channels, 0,
+                                     &chmap);
+        if (err < 0)
+                return err;
+        chmap->channel_mask = SND_PCM_CHMAP_MASK_2468;
+        chip->ac97[0]->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
+
         /* no SPDIF support on codec? */
         if (chip->pcms[ATI_PCM_SPDIF] && ! chip->pcms[ATI_PCM_SPDIF]->rates)
                 return 0;