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ALSA: hda: VREF powerdown for headphones 

Add support for powering down VREF on standard headphone insertion, also
powers up the VREF on a headset insertion.

Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Matthew Ranostay 2008-10-09 09:32:17 -04:00 committed by Jaroslav Kysela
parent b9aea7150a
commit 72474be62d
1 changed files with 22 additions and 1 deletions
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23
sound/pci/hda/patch_sigmatel.c
View File

@ -38,6 +38,7 @@
#define NUM_CONTROL_ALLOC 32
#define STAC_PWR_EVENT 0x20
#define STAC_HP_EVENT 0x30
#define STAC_VREF_EVENT 0x40
enum {
STAC_REF,
@ -3854,13 +3855,22 @@ static void stac92xx_unsol_event(struct hda_codec *codec, unsigned int res)
struct sigmatel_spec *spec = codec->spec;
int idx = res >> 26 & 0x0f;
switch ((res >> 26) & 0x30) {
switch ((res >> 26) & 0x70) {
case STAC_HP_EVENT:
stac92xx_hp_detect(codec, res);
/* fallthru */
case STAC_PWR_EVENT:
if (spec->num_pwrs > 0)
stac92xx_pin_sense(codec, idx);
break;
case STAC_VREF_EVENT: {
int data = snd_hda_codec_read(codec, codec->afg, 0,
AC_VERB_GET_GPIO_DATA, 0);
/* toggle VREF state based on GPIOx status */
snd_hda_codec_write(codec, codec->afg, 0, 0x7e0,
!!(data & (1 << idx)));
break;
}
}
}
@ -4360,6 +4370,17 @@ again:
codec->slave_dig_outs = stac92hd71bxx_slave_dig_outs;
break;
case 0x111d7608: /* 5 Port with Analog Mixer */
switch (codec->subsystem_id) {
case 0x103c361a:
/* Enable VREF power saving on GPIO1 detect */
snd_hda_codec_write(codec, codec->afg, 0,
AC_VERB_SET_GPIO_UNSOLICITED_RSP_MASK, 0x02);
snd_hda_codec_write_cache(codec, codec->afg, 0,
AC_VERB_SET_UNSOLICITED_ENABLE,
(AC_USRSP_EN | STAC_VREF_EVENT | 0x01));
spec->gpio_mask |= 0x02;
break;
}
if ((codec->revision_id & 0xf) == 0 ||
(codec->revision_id & 0xf) == 1) {
#ifdef SND_HDA_NEEDS_RESUME