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authorJani Nikula <jani.nikula@intel.com>2013-10-04 15:08:08 +0300
committerDave Airlie <airlied@redhat.com>2013-10-09 18:17:06 +1000
commit58704e6a5478a96ca0e549ce6605332aab815eea (patch)
tree8a396b200fc194210037439c3b2bda9430893206 /include/drm/drm_dp_helper.h
parent0111be42186fc5461b9e9d579014c70869ab3152 (diff)
drm/dp: add helper for checking DP_ENHANCED_FRAME_CAP in DPCD
Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'include/drm/drm_dp_helper.h')
-rw-r--r--include/drm/drm_dp_helper.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index 110f4f1f51d7..a92c3754e3bb 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -390,4 +390,11 @@ drm_dp_max_lane_count(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
return dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK;
}
+static inline bool
+drm_dp_enhanced_frame_cap(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
+{
+ return dpcd[DP_DPCD_REV] >= 0x11 &&
+ (dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP);
+}
+
#endif /* _DRM_DP_HELPER_H_ */

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