Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 02f21c9d authored by Clemens Ladisch's avatar Clemens Ladisch Committed by Jaroslav Kysela
Browse files

[ALSA] oxygen: add SPDIF loopback control 



Add a mixer control for the SPDIF loopback function.

Signed-off-by: default avatarClemens Ladisch <clemens@ladisch.de>
Signed-off-by: default avatarJaroslav Kysela <perex@perex.cz>
parent 08c8efe6

sound/pci/oxygen/oxygen_mixer.c

+38 −0
Original line number Diff line number Diff line
@@ -408,6 +408,37 @@ static int spdif_input_default_get(struct snd_kcontrol *ctl, 
	return 0;

}



static int spdif_loopback_get(struct snd_kcontrol *ctl,

			      struct snd_ctl_elem_value *value)

{

	struct oxygen *chip = ctl->private_data;



	value->value.integer.value[0] =

		!!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL)

		   & OXYGEN_SPDIF_LOOPBACK);

	return 0;

}



static int spdif_loopback_put(struct snd_kcontrol *ctl,

			      struct snd_ctl_elem_value *value)

{

	struct oxygen *chip = ctl->private_data;

	u32 oldreg, newreg;

	int changed;



	spin_lock_irq(&chip->reg_lock);

	oldreg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);

	if (value->value.integer.value[0])

		newreg = oldreg | OXYGEN_SPDIF_LOOPBACK;

	else

		newreg = oldreg & ~OXYGEN_SPDIF_LOOPBACK;

	changed = newreg != oldreg;

	if (changed)

		oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, newreg);

	spin_unlock_irq(&chip->reg_lock);

	return changed;

}



static int ac97_switch_get(struct snd_kcontrol *ctl,

			   struct snd_ctl_elem_value *value)

{
@@ -620,6 +651,13 @@ static const struct snd_kcontrol_new controls[] = { 
		.info = spdif_info,

		.get = spdif_input_default_get,

	},

	{

		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,

		.name = SNDRV_CTL_NAME_IEC958("Loopback ", NONE, SWITCH),

		.info = snd_ctl_boolean_mono_info,

		.get = spdif_loopback_get,

		.put = spdif_loopback_put,

	},

};



static const struct snd_kcontrol_new ac97_controls[] = {