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authorAdam Jackson <ajax@redhat.com>2012-05-14 16:05:46 -0400
committerDave Airlie <airlied@redhat.com>2012-05-22 10:18:36 +0100
commitde44d97193fc67c1636c614fc302945e2912da1f (patch)
tree1f825a00560633667f157b722d72138cb384ce92 /include/drm
parent86c3c3beb83d6cf61cc1589b62aaec80e6ac2b8b (diff)
downloadop-kernel-dev-de44d97193fc67c1636c614fc302945e2912da1f.zip
op-kernel-dev-de44d97193fc67c1636c614fc302945e2912da1f.tar.gz
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>
Diffstat (limited to 'include/drm')
-rw-r--r--include/drm/drm_dp_helper.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index 8ed85b9..1744b18c 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
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