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[ALSA] virtuoso: add GPIO 1 mixer control 

Add a mixer control for switching whatever it is that is connected to
GPIO pin 1 on the Xonar DX.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Clemens Ladisch 2008-04-11 10:24:48 +02:00 committed by Takashi Iwai
parent 1d98c7d4be
commit 387fb6a206
1 changed files with 53 additions and 0 deletions
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53
sound/pci/oxygen/virtuoso.c
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@ -470,6 +470,53 @@ static const struct snd_kcontrol_new alt_switch = {
.put = alt_switch_put,
};
static int unknown_info(struct snd_kcontrol *ctl,
struct snd_ctl_elem_info *info)
{
info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
info->count = 1;
info->value.enumerated.items = 2;
if (info->value.enumerated.item > 1)
info->value.enumerated.item = 1;
sprintf(info->value.enumerated.name, "%u", info->value.enumerated.item);
return 0;
}
static int unknown_get(struct snd_kcontrol *ctl,
struct snd_ctl_elem_value *value)
{
struct oxygen *chip = ctl->private_data;
value->value.enumerated.item[0] =
!!(oxygen_read16(chip, OXYGEN_GPIO_DATA) & GPIO_DX_UNKNOWN1);
return 0;
}
static int unknown_put(struct snd_kcontrol *ctl,
struct snd_ctl_elem_value *value)
{
struct oxygen *chip = ctl->private_data;
u16 old_reg, new_reg;
spin_lock_irq(&chip->reg_lock);
old_reg = oxygen_read16(chip, OXYGEN_GPIO_DATA);
if (value->value.enumerated.item[0])
new_reg = old_reg | GPIO_DX_UNKNOWN1;
else
new_reg = old_reg & ~GPIO_DX_UNKNOWN1;
oxygen_write16(chip, OXYGEN_GPIO_DATA, new_reg);
spin_unlock_irq(&chip->reg_lock);
return old_reg != new_reg;
}
static const struct snd_kcontrol_new unknown_switch = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "PanelConfig?",
.info = unknown_info,
.get = unknown_get,
.put = unknown_put,
};
static void xonar_dx_ac97_switch(struct oxygen *chip,
unsigned int reg, unsigned int mute)
{
@ -515,6 +562,11 @@ static int xonar_mixer_init(struct oxygen *chip)
return snd_ctl_add(chip->card, snd_ctl_new1(&alt_switch, chip));
}
static int xonar_dx_mixer_init(struct oxygen *chip)
{
return snd_ctl_add(chip->card, snd_ctl_new1(&unknown_switch, chip));
}
static const struct oxygen_model xonar_models[] = {
[MODEL_D2] = {
.shortname = "Xonar D2",
@ -574,6 +626,7 @@ static const struct oxygen_model xonar_models[] = {
.owner = THIS_MODULE,
.init = xonar_dx_init,
.control_filter = xonar_dx_control_filter,
.mixer_init = xonar_dx_mixer_init,
.cleanup = xonar_dx_cleanup,
.set_dac_params = set_cs43xx_params,
.set_adc_params = set_cs53x1_params,