[ALSA] Allow more than 2 channel modes

HDA Codec driver
Allow 'Channel Mode' control to have more than 2 modes.

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

1 files changed, 16 insertions, 6 deletions

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 8a104827a95c..9f12d1fd02dc 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -301,13 +301,14 @@ static int alc880_ch_mode_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *ui
 {
         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
         struct alc_spec *spec = codec->spec;
+        int items = kcontrol->private_value ? (int)kcontrol->private_value : 2;
 
         snd_assert(spec->channel_mode, return -ENXIO);
         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
         uinfo->count = 1;
-        uinfo->value.enumerated.items = 2;
-        if (uinfo->value.enumerated.item >= 2)
-                uinfo->value.enumerated.item = 1;
+        uinfo->value.enumerated.items = items;
+        if (uinfo->value.enumerated.item >= items)
+                uinfo->value.enumerated.item = items - 1;
         sprintf(uinfo->value.enumerated.name, "%dch",
                 spec->channel_mode[uinfo->value.enumerated.item].channels);
         return 0;
@@ -317,10 +318,16 @@ static int alc880_ch_mode_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *uc
 {
         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
         struct alc_spec *spec = codec->spec;
+        int items = kcontrol->private_value ? (int)kcontrol->private_value : 2;
+        int i;
 
         snd_assert(spec->channel_mode, return -ENXIO);
-        ucontrol->value.enumerated.item[0] =
-                (spec->multiout.max_channels == spec->channel_mode[0].channels) ? 0 : 1;
+        for (i = 0; i < items; i++) {
+                if (spec->multiout.max_channels == spec->channel_mode[i].channels) {
+                        ucontrol->value.enumerated.item[0] = i;
+                        break;
+                }
+        }
         return 0;
 }
 
@@ -1036,9 +1043,11 @@ static struct hda_input_mux alc880_test_capture_source = {
         },
 };
 
-static struct alc_channel_mode alc880_test_modes[2] = {
+static struct alc_channel_mode alc880_test_modes[4] = {
         { 2, NULL },
+        { 4, NULL },
         { 6, NULL },
+        { 8, NULL },
 };
 
 static int alc_test_pin_ctl_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
@@ -1211,6 +1220,7 @@ static snd_kcontrol_new_t alc880_test_mixer[] = {
                 .info = alc880_ch_mode_info,
                 .get = alc880_ch_mode_get,
                 .put = alc880_ch_mode_put,
+                .private_value = ARRAY_SIZE(alc880_test_modes),
         },
         { } /* end */
 };