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| author | Mengdong Lin <mengdong.lin@intel.com> | 2013-08-26 21:35:21 -0400 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2013-08-27 12:15:09 +0200 |
| commit | f1aa06847506d5b88f5eb41fae6a24a7128097e7 (patch) | |
| tree | cac7c3bd3fa0cc6a945f2393ab678b263f65b99c /sound/pci/hda/hda_proc.c | |
| parent | 68538bf2bce557c3b5fe8c59b034d45352500db1 (diff) | |
ALSA: hda - add flags and routines to get devices selection info for DP1.2 MST
This patch adds flags and routines to get device list & selection info on
a pin.
To support Display Port 1.2 multi-stream transport (MST) over single DP port,
a pin can support multiple devices. Please refer to HD-A spec Document Change
Notificaton HDA040-A.
A display audio codec can set flag "dp_mst" in its patch, indicating its pins
can support MST. But at runtime, a pin may not be multi-streaming capable and
report the device list is empty, depending on Gfx driver configuration.
Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/hda_proc.c')
0 files changed, 0 insertions, 0 deletions