[ALSA] hda-codec - Feed front signals to all surrounds

HDA Codec driver
Feed front signals to all surround channels if no data is given
for surround channels.

It seems that CLFE works as expected (only center outputs) even if
connected from the front line - at least on my test system.
If this change causes problems on other system (e.g. only the left
channel is transferred to the center channel), please let me know...

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

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index cb3a76139341383bb9376fca3f898a3fbecda3f3..8805928167f5ee10c525f82b492b9e73e9279a1f 100644 (file)
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -1682,11 +1682,12 @@ int snd_hda_multi_out_analog_prepare(struct hda_codec *codec, struct hda_multi_o
                snd_hda_codec_setup_stream(codec, mout->hp_nid, stream_tag, 0, format);
        /* surrounds */
        for (i = 1; i < mout->num_dacs; i++) {
-               if (i == HDA_REAR && chs == 2) /* copy front to rear */
-                       snd_hda_codec_setup_stream(codec, nids[i], stream_tag, 0, format);
-               else if (chs >= (i + 1) * 2) /* independent out */
+               if (chs >= (i + 1) * 2) /* independent out */
                        snd_hda_codec_setup_stream(codec, nids[i], stream_tag, i * 2,
                                                   format);
+               else /* copy front */
+                       snd_hda_codec_setup_stream(codec, nids[i], stream_tag, 0,
+                                                  format);
        }
        return 0;
 }