[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>
diff --git a/sound/pci/oxygen/virtuoso.c b/sound/pci/oxygen/virtuoso.c
index 07d7e9b..53d7289 100644
--- a/sound/pci/oxygen/virtuoso.c
+++ b/sound/pci/oxygen/virtuoso.c
@@ -470,6 +470,53 @@
.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 @@
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 @@
.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,