diff options
| author | Adam Jackson <ajax@redhat.com> | 2012-05-14 16:05:46 -0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-05-22 10:18:36 +0100 |
| commit | de44d97193fc67c1636c614fc302945e2912da1f (patch) | |
| tree | 1f825a00560633667f157b722d72138cb384ce92 | |
| parent | 86c3c3beb83d6cf61cc1589b62aaec80e6ac2b8b (diff) | |
drm/dp: Add DPCD defines for register 0x007
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>
| -rw-r--r-- | include/drm/drm_dp_helper.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 8ed85b96487d..1744b18c06b3 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -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 |