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Commit 02f21c9d authored by Clemens Ladisch's avatar Clemens Ladisch Committed by Jaroslav Kysela
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[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
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+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[] = {