From: Mengdong Lin Date: Tue, 27 Aug 2013 01:35:21 +0000 (-0400) Subject: ALSA: hda - add flags and routines to get devices selection info for DP1.2 MST X-Git-Tag: v3.12-rc1~150^2~8 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f1aa06847506d5b88f5eb41fae6a24a7128097e7;p=pandora-kernel.git 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 Signed-off-by: Takashi Iwai --- Reading git-diff-tree failed