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ALSA: hda - add controls to toggle DC bias on mic ports 

This patch adds a mixer control for the STAC92XX boards to control the
DC bias of mic ports, allowing recording from both powered and
non-powered sources.  It replaces the "Mic Output Switch" with "Mic Jack
Mode" to switch between Mic, Line In, and Line Out.

Signed-off-by: Nickolas Lloyd <ultrageek.lloyd@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Nickolas Lloyd 2009-05-15 15:33:30 +02:00 committed by Takashi Iwai
parent 7442f9dadb
commit 2fc9989079
1 changed files with 107 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

111
sound/pci/hda/patch_sigmatel.c
View File

@ -634,6 +634,96 @@ static int stac92xx_smux_enum_put(struct snd_kcontrol *kcontrol,
return 0;
}
static unsigned int stac92xx_vref_set(struct hda_codec *codec,
hda_nid_t nid, unsigned int new_vref)
{
unsigned int error;
unsigned int pincfg;
pincfg = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
pincfg &= 0xff;
pincfg &= ~(AC_PINCTL_VREFEN | AC_PINCTL_IN_EN | AC_PINCTL_OUT_EN);
pincfg |= new_vref;
if (new_vref == AC_PINCTL_VREF_HIZ)
pincfg |= AC_PINCTL_OUT_EN;
else
pincfg |= AC_PINCTL_IN_EN;
error = snd_hda_codec_write_cache(codec, nid, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL, pincfg);
if (error < 0)
return error;
else
return 1;
}
static unsigned int stac92xx_vref_get(struct hda_codec *codec, hda_nid_t nid)
{
unsigned int vref;
vref = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
vref &= AC_PINCTL_VREFEN;
return vref;
}
static int stac92xx_dc_bias_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
unsigned int new_vref;
unsigned int error;
if (ucontrol->value.enumerated.item[0] == 0)
new_vref = AC_PINCTL_VREF_80;
else if (ucontrol->value.enumerated.item[0] == 1)
new_vref = AC_PINCTL_VREF_GRD;
else
new_vref = AC_PINCTL_VREF_HIZ;
if (new_vref != stac92xx_vref_get(codec, kcontrol->private_value)) {
error = stac92xx_vref_set(codec,
kcontrol->private_value, new_vref);
return error;
}
return 0;
}
static int stac92xx_dc_bias_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
unsigned int vref = stac92xx_vref_get(codec, kcontrol->private_value);
if (vref == AC_PINCTL_VREF_80)
ucontrol->value.enumerated.item[0] = 0;
else if (vref == AC_PINCTL_VREF_GRD)
ucontrol->value.enumerated.item[0] = 1;
else if (vref == AC_PINCTL_VREF_HIZ)
ucontrol->value.enumerated.item[0] = 2;
return 0;
}
static int stac92xx_dc_bias_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
static char *texts[] = {
"Mic In", "Line In", "Line Out"
};
uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
uinfo->value.enumerated.items = 3;
uinfo->count = 1;
if (uinfo->value.enumerated.item >= 3)
uinfo->value.enumerated.item = 2;
strcpy(uinfo->value.enumerated.name,
texts[uinfo->value.enumerated.item]);
return 0;
}
static int stac92xx_mux_enum_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
@ -995,6 +1085,17 @@ static struct hda_verb stac9205_core_init[] = {
.private_value = verb_read | (verb_write << 16), \
}
#define DC_BIAS(xname, idx, nid) \
{ \
.iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
.name = xname, \
.index = idx, \
.info = stac92xx_dc_bias_info, \
.get = stac92xx_dc_bias_get, \
.put = stac92xx_dc_bias_put, \
.private_value = nid, \
}
static struct snd_kcontrol_new stac9200_mixer[] = {
HDA_CODEC_VOLUME("Master Playback Volume", 0xb, 0, HDA_OUTPUT),
HDA_CODEC_MUTE("Master Playback Switch", 0xb, 0, HDA_OUTPUT),
@ -2702,7 +2803,8 @@ enum {
STAC_CTL_WIDGET_AMP_VOL,
STAC_CTL_WIDGET_HP_SWITCH,
STAC_CTL_WIDGET_IO_SWITCH,
STAC_CTL_WIDGET_CLFE_SWITCH
STAC_CTL_WIDGET_CLFE_SWITCH,
STAC_CTL_WIDGET_DC_BIAS
};
static struct snd_kcontrol_new stac92xx_control_templates[] = {
@ -2714,6 +2816,7 @@ static struct snd_kcontrol_new stac92xx_control_templates[] = {
STAC_CODEC_HP_SWITCH(NULL),
STAC_CODEC_IO_SWITCH(NULL, 0),
STAC_CODEC_CLFE_SWITCH(NULL, 0),
DC_BIAS(NULL, 0, 0),
};
/* add dynamic controls */
@ -3165,9 +3268,9 @@ static int stac92xx_auto_create_multi_out_ctls(struct hda_codec *codec,
}
if (spec->mic_switch) {
err = stac92xx_add_control(spec, STAC_CTL_WIDGET_IO_SWITCH,
"Mic as Output Switch",
(spec->mic_switch << 8) | 1);
err = stac92xx_add_control(spec, STAC_CTL_WIDGET_DC_BIAS,
"Mic Jack Mode",
spec->mic_switch);
if (err < 0)
return err;
}