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authorStephen Warren <swarren@nvidia.com>2011-06-01 11:14:18 -0600
committerTakashi Iwai <tiwai@suse.de>2011-06-06 12:51:59 +0200
commit74b654c957e901e7596ebc7b9f5a1bea62b20509 (patch)
tree2ae316f1b481c0ad4a84c1caff9b99ca57fe63ba /sound/pci/hda/patch_sigmatel.c
parent7c9359762797ba7a70bbaa6364aaecc16786ac83 (diff)
ALSA: hda: Virtualize SPDIF out controls
The SPDIF output controls apply to converter widgets. A future change will create a PCM device per pin widget, and hence a set of SPDIF output controls per pin widget, for certain HDMI codecs. To support this, we need the ability to virtualize the SPDIF output controls. Specifically: * Controls can be "unassigned" from real hardware when a converter is not used for the PCM the control was created for. * Control puts only write to hardware when they are assigned. * Controls can be "assigned" to real hardware when a converter is picked to support output for a particular PCM. * When a converter is assigned, the hardware is updated to the cached configuration. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/patch_sigmatel.c')
-rw-r--r--sound/pci/hda/patch_sigmatel.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 7f81cc2274f..7407095cbc7 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -1112,7 +1112,9 @@ static int stac92xx_build_controls(struct hda_codec *codec)
}
if (spec->multiout.dig_out_nid) {
- err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);
+ err = snd_hda_create_spdif_out_ctls(codec,
+ spec->multiout.dig_out_nid,
+ spec->multiout.dig_out_nid);
if (err < 0)
return err;
err = snd_hda_create_spdif_share_sw(codec,