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| author | Stephen Warren <swarren@nvidia.com> | 2011-06-01 11:14:18 -0600 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-06-06 12:51:59 +0200 |
| commit | 74b654c957e901e7596ebc7b9f5a1bea62b20509 (patch) | |
| tree | 2ae316f1b481c0ad4a84c1caff9b99ca57fe63ba /sound/pci/hda/hda_local.h | |
| parent | 7c9359762797ba7a70bbaa6364aaecc16786ac83 (diff) | |
| download | linux-74b654c957e901e7596ebc7b9f5a1bea62b20509.tar.gz linux-74b654c957e901e7596ebc7b9f5a1bea62b20509.tar.bz2 linux-74b654c957e901e7596ebc7b9f5a1bea62b20509.zip | |
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/hda_local.h')
| -rw-r--r-- | sound/pci/hda/hda_local.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h index 08ec073444e2..8b88c92826a1 100644 --- a/sound/pci/hda/hda_local.h +++ b/sound/pci/hda/hda_local.h @@ -212,7 +212,9 @@ int snd_hda_mixer_bind_tlv(struct snd_kcontrol *kcontrol, int op_flag, /* * SPDIF I/O */ -int snd_hda_create_spdif_out_ctls(struct hda_codec *codec, hda_nid_t nid); +int snd_hda_create_spdif_out_ctls(struct hda_codec *codec, + hda_nid_t associated_nid, + hda_nid_t cvt_nid); int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid); /* |