ALSA: hda - introduce HDA_SUBDEV_AMP_FLAG (ControlAmp in proc)

The purpose of this changeset is to show information about amplifier
setting in the codec proc file. Something like:

  Control: name="Front Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Control: name="Front Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=2, ofs=0

Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 3 insertions, 1 deletions

diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c
index 64995e8e3a72..b94cdee5eb53 100644
--- a/sound/pci/hda/patch_via.c
+++ b/sound/pci/hda/patch_via.c
@@ -458,7 +458,9 @@ static int via_add_control(struct via_spec *spec, int type, const char *name,
         if (!knew->name)
                 return -ENOMEM;
         if (get_amp_nid_(val))
-                knew->subdevice = HDA_SUBDEV_NID_FLAG | get_amp_nid_(val);
+                knew->subdevice = HDA_SUBDEV_NID_FLAG |
+                                  HDA_SUBDEV_AMP_FLAG |
+                                  get_amp_nid_(val);
         knew->private_value = val;
         return 0;
 }