ALSA: oxygen: do not create useless S/PDIF controls

Cards without S/PDIF output do not need those controls.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 9 insertions, 0 deletions

diff --git a/sound/pci/oxygen/oxygen_mixer.c b/sound/pci/oxygen/oxygen_mixer.c
index 5988e044c519..2f698a9a5044 100644
--- a/sound/pci/oxygen/oxygen_mixer.c
+++ b/sound/pci/oxygen/oxygen_mixer.c
@@ -786,6 +786,9 @@ static const struct snd_kcontrol_new controls[] = {
                 .get = upmix_get,
                 .put = upmix_put,
         },
+};
+
+static const struct snd_kcontrol_new spdif_output_controls[] = {
         {
                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
@@ -1073,6 +1076,12 @@ int oxygen_mixer_init(struct oxygen *chip)
         err = add_controls(chip, controls, ARRAY_SIZE(controls));
         if (err < 0)
                 return err;
+        if (chip->model.device_config & PLAYBACK_1_TO_SPDIF) {
+                err = add_controls(chip, spdif_output_controls,
+                                   ARRAY_SIZE(spdif_output_controls));
+                if (err < 0)
+                        return err;
+        }
         if (chip->model.device_config & CAPTURE_1_FROM_SPDIF) {
                 err = add_controls(chip, spdif_input_controls,
                                    ARRAY_SIZE(spdif_input_controls));