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ALSA: Au88x0 - Support 4 channels playback when AC97 codecs has SDAC bit 

- Check SDAC bit of AC97 codec for supporting 4 channels playback.

Signed-off-by: Raymond Yau <superquad.vortex2@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Raymond Yau 2012-01-13 10:30:08 +08:00 committed by Takashi Iwai
parent ffe535edb9
commit 7b32486ca4
2 changed files with 6 additions and 5 deletions
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10
sound/pci/au88x0/au88x0.c
View File

@ -268,6 +268,11 @@ snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
card->shortname, chip->io, chip->irq);
// (4) Alloc components.
err = snd_vortex_mixer(chip);
if (err < 0) {
snd_card_free(card);
return err;
}
// ADB pcm.
if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_ADB, NR_ADB)) < 0) {
snd_card_free(card);
@ -299,11 +304,6 @@ snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
return err;
}
#endif
// snd_ac97_mixer and Vortex mixer.
if ((err = snd_vortex_mixer(chip)) < 0) {
snd_card_free(card);
return err;
}
if ((err = snd_vortex_midi(chip)) < 0) {
snd_card_free(card);
return err;

1
sound/pci/au88x0/au88x0_pcm.c
View File

@ -168,6 +168,7 @@ static int snd_vortex_pcm_open(struct snd_pcm_substream *substream)
runtime->hw = snd_vortex_playback_hw_adb;
#ifdef CHIP_AU8830
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
VORTEX_IS_QUAD(vortex) &&
VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_ADB) {
runtime->hw.channels_max = 4;
snd_pcm_hw_constraint_list(runtime, 0,