ALSA: hda - Don't create empty/single-item input source

In patch_realtek.c, don't create empty or single-item "Input Source"
control elements that are simply superfluous.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 8dcbb04..7a3c6db 100644 (file)
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -1595,8 +1595,7 @@ static int alc_cap_sw_put(struct snd_kcontrol *kcontrol,
                                     snd_hda_mixer_amp_switch_put);
 }
 
-#define DEFINE_CAPMIX(num) \
-static struct snd_kcontrol_new alc_capture_mixer ## num[] = { \
+#define _DEFINE_CAPMIX(num) \
        { \
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
                .name = "Capture Switch", \
@@ -1617,7 +1616,9 @@ static struct snd_kcontrol_new alc_capture_mixer ## num[] = { \
                .get = alc_cap_vol_get, \
                .put = alc_cap_vol_put, \
                .tlv = { .c = alc_cap_vol_tlv }, \
-       }, \
+       }
+
+#define _DEFINE_CAPSRC(num) \
        { \
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
                /* .name = "Capture Source", */ \
@@ -1626,15 +1627,28 @@ static struct snd_kcontrol_new alc_capture_mixer ## num[] = { \
                .info = alc_mux_enum_info, \
                .get = alc_mux_enum_get, \
                .put = alc_mux_enum_put, \
-       }, \
-       { } /* end */ \
+       }
+
+#define DEFINE_CAPMIX(num) \
+static struct snd_kcontrol_new alc_capture_mixer ## num[] = { \
+       _DEFINE_CAPMIX(num),                                  \
+       _DEFINE_CAPSRC(num),                                  \
+       { } /* end */                                         \
+}
+
+#define DEFINE_CAPMIX_NOSRC(num) \
+static struct snd_kcontrol_new alc_capture_mixer_nosrc ## num[] = { \
+       _DEFINE_CAPMIX(num),                                        \
+       { } /* end */                                               \
 }
 
 /* up to three ADCs */
 DEFINE_CAPMIX(1);
 DEFINE_CAPMIX(2);
 DEFINE_CAPMIX(3);
-
+DEFINE_CAPMIX_NOSRC(1);
+DEFINE_CAPMIX_NOSRC(2);
+DEFINE_CAPMIX_NOSRC(3);
 
 /*
  * ALC880 5-stack model
@@ -4298,13 +4312,22 @@ static void alc880_auto_init(struct hda_codec *codec)
 
 static void set_capture_mixer(struct alc_spec *spec)
 {
-       static struct snd_kcontrol_new *caps[3] = {
-               alc_capture_mixer1,
-               alc_capture_mixer2,
-               alc_capture_mixer3,
+       static struct snd_kcontrol_new *caps[2][3] = {
+               { alc_capture_mixer_nosrc1,
+                 alc_capture_mixer_nosrc2,
+                 alc_capture_mixer_nosrc3 },
+               { alc_capture_mixer1,
+                 alc_capture_mixer2,
+                 alc_capture_mixer3 },
        };
-       if (spec->num_adc_nids > 0 && spec->num_adc_nids <= 3)
-               spec->cap_mixer = caps[spec->num_adc_nids - 1];
+       if (spec->num_adc_nids > 0 && spec->num_adc_nids <= 3) {
+               int mux;
+               if (spec->input_mux && spec->input_mux->num_items > 1)
+                       mux = 1;
+               else
+                       mux = 0;
+               spec->cap_mixer = caps[mux][spec->num_adc_nids - 1];
+       }
 }
 
 #define set_beep_amp(spec, nid, idx, dir) \