sound: oxygen: better defaults for upmixing control

On card models with two-channel outputs, the base driver can
automatically disable the upmixing control so that the model
drivers do not need to do this.

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

1 files changed, 0 insertions, 8 deletions

diff --git a/sound/pci/oxygen/hifier.c b/sound/pci/oxygen/hifier.c
index 84ef13183419..9026a143a5ec 100644
--- a/sound/pci/oxygen/hifier.c
+++ b/sound/pci/oxygen/hifier.c
@@ -141,19 +141,11 @@ static void set_cs5340_params(struct oxygen *chip,
 
 static const DECLARE_TLV_DB_LINEAR(ak4396_db_scale, TLV_DB_GAIN_MUTE, 0);
 
-static int hifier_control_filter(struct snd_kcontrol_new *template)
-{
-        if (!strcmp(template->name, "Stereo Upmixing"))
-                return 1; /* stereo only - we don't need upmixing */
-        return 0;
-}
-
 static const struct oxygen_model model_hifier = {
         .shortname = "C-Media CMI8787",
         .longname = "C-Media Oxygen HD Audio",
         .chip = "CMI8788",
         .init = hifier_init,
-        .control_filter = hifier_control_filter,
         .cleanup = hifier_cleanup,
         .resume = hifier_resume,
         .set_dac_params = set_ak4396_params,