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drm/dp: Add DPCD defines for register 0x007

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Low four bits are downstream port count.  High bit indicates peer OUI
support.  OUI matching will allow us to do additional per-sink handling
for things like DP->VGA bandwidth limits or (hopefully) the iMac-as-
display hack.

Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Adam Jackson 2012-05-14 16:05:46 -04:00 committed by Dave Airlie
parent 86c3c3beb8
commit de44d97193
1 changed files with 4 additions and 0 deletions
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4
include/drm/drm_dp_helper.h
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@ -72,6 +72,10 @@
#define DP_MAIN_LINK_CHANNEL_CODING 0x006
#define DP_DOWN_STREAM_PORT_COUNT 0x007
#define DP_PORT_COUNT_MASK 0x0f
#define DP_OUI_SUPPORT (1 << 7)
#define DP_EDP_CONFIGURATION_CAP 0x00d
#define DP_TRAINING_AUX_RD_INTERVAL 0x00e