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ALSA: Implement channel maps for standard onboard AC97 drivers

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Just set the channel maps depending on the hardware availability.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2012-08-03 18:01:40 +02:00
parent 833a493b7e
commit e36e3b86c7
4 changed files with 59 additions and 0 deletions
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9
sound/pci/atiixp.c
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@@ -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;