diff options
| -rw-r--r-- | sound/pci/oxygen/oxygen_mixer.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/sound/pci/oxygen/oxygen_mixer.c b/sound/pci/oxygen/oxygen_mixer.c index 0993c29e62f..6b7420fdd02 100644 --- a/sound/pci/oxygen/oxygen_mixer.c +++ b/sound/pci/oxygen/oxygen_mixer.c @@ -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[] = { |