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ALSA: ac97: Implement channel map workaround for ALC650

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ALC650 has a channel swap option between surround and CLFE channels,
so we need to tweak the channel maps dynamically depending on the
register bit.

Now struct snd_ac97 can contain chmap pointers for playback and
capture.  The driver may store these and let ac97 driver changing the
channel mapping dynamically.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2012-08-03 17:59:36 +02:00
parent 53775b0d0c
commit 833a493b7e
2 changed files with 26 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/sound/ac97_codec.h
View File

@ -422,6 +422,7 @@
*/
struct snd_ac97;
struct snd_pcm_chmap;
struct snd_ac97_build_ops {
int (*build_3d) (struct snd_ac97 *ac97);
@ -528,6 +529,8 @@ struct snd_ac97 {
struct delayed_work power_work;
#endif
struct device dev;
struct snd_pcm_chmap *chmaps[2]; /* channel-maps (optional) */
};
#define to_ac97_t(d) container_of(d, struct snd_ac97, dev)

24
sound/pci/ac97/ac97_patch.c
View File

@ -2595,6 +2595,21 @@ static void alc650_update_jacks(struct snd_ac97 *ac97)
shared ? 0 : 0x100);
}
static int alc650_swap_surround_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
struct snd_pcm_chmap *map = ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK];
if (map) {
if (ucontrol->value.integer.value[0])
map->chmap = snd_pcm_std_chmaps;
else
map->chmap = snd_pcm_alt_chmaps;
}
return snd_ac97_put_volsw(kcontrol, ucontrol);
}
static const struct snd_kcontrol_new snd_ac97_controls_alc650[] = {
AC97_SINGLE("Duplicate Front", AC97_ALC650_MULTICH, 0, 1, 0),
AC97_SINGLE("Surround Down Mix", AC97_ALC650_MULTICH, 1, 1, 0),
@ -2608,7 +2623,14 @@ static const struct snd_kcontrol_new snd_ac97_controls_alc650[] = {
/* 9: Line-In/Surround share */
/* 10: Mic/CLFE share */
/* 11-13: in IEC958 controls */
AC97_SINGLE("Swap Surround Slot", AC97_ALC650_MULTICH, 14, 1, 0),
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Swap Surround Slot",
.info = snd_ac97_info_volsw,
.get = snd_ac97_get_volsw,
.put = alc650_swap_surround_put,
.private_value = AC97_SINGLE_VALUE(AC97_ALC650_MULTICH, 14, 1, 0),
},
#if 0 /* always set in patch_alc650 */
AC97_SINGLE("IEC958 Input Clock Enable", AC97_ALC650_CLOCK, 0, 1, 0),
AC97_SINGLE("IEC958 Input Pin Enable", AC97_ALC650_CLOCK, 1, 1, 0),