[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>

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 8a104827a95c1581cf710da9c1d27b3b49fa882d..9f12d1fd02dc10fd9f91dfc1e97d9b6facfdc773 100644 (file)
--- 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 */
 };