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-rw-r--r--sound/pci/oxygen/oxygen_mixer.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/sound/pci/oxygen/oxygen_mixer.c b/sound/pci/oxygen/oxygen_mixer.c
index 0993c29e62f1..6b7420fdd026 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,
408 return 0; 408 return 0;
409} 409}
410 410
411static int spdif_loopback_get(struct snd_kcontrol *ctl,
412 struct snd_ctl_elem_value *value)
413{
414 struct oxygen *chip = ctl->private_data;
415
416 value->value.integer.value[0] =
417 !!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL)
418 & OXYGEN_SPDIF_LOOPBACK);
419 return 0;
420}
421
422static int spdif_loopback_put(struct snd_kcontrol *ctl,
423 struct snd_ctl_elem_value *value)
424{
425 struct oxygen *chip = ctl->private_data;
426 u32 oldreg, newreg;
427 int changed;
428
429 spin_lock_irq(&chip->reg_lock);
430 oldreg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
431 if (value->value.integer.value[0])
432 newreg = oldreg | OXYGEN_SPDIF_LOOPBACK;
433 else
434 newreg = oldreg & ~OXYGEN_SPDIF_LOOPBACK;
435 changed = newreg != oldreg;
436 if (changed)
437 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, newreg);
438 spin_unlock_irq(&chip->reg_lock);
439 return changed;
440}
441
411static int ac97_switch_get(struct snd_kcontrol *ctl, 442static int ac97_switch_get(struct snd_kcontrol *ctl,
412 struct snd_ctl_elem_value *value) 443 struct snd_ctl_elem_value *value)
413{ 444{
@@ -620,6 +651,13 @@ static const struct snd_kcontrol_new controls[] = {
620 .info = spdif_info, 651 .info = spdif_info,
621 .get = spdif_input_default_get, 652 .get = spdif_input_default_get,
622 }, 653 },
654 {
655 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
656 .name = SNDRV_CTL_NAME_IEC958("Loopback ", NONE, SWITCH),
657 .info = snd_ctl_boolean_mono_info,
658 .get = spdif_loopback_get,
659 .put = spdif_loopback_put,
660 },
623}; 661};
624 662
625static const struct snd_kcontrol_new ac97_controls[] = { 663static const struct snd_kcontrol_new ac97_controls[] = {