X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fdrm%2Fdrm_dp_helper.h;h=bb9d0deca07cc30d0a031cf8ffd3b522b3318d8b;hb=bbf44583ace773a2e157339b0ce72f7d146685e9;hp=0212d139a480909a216da244ffd8aadf6effa630;hpb=df91fba5e7ed414b1856b33bbed6d55439a14c47;p=firefly-linux-kernel-4.4.55.git

diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index 0212d139a480..bb9d0deca07c 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -46,7 +46,7 @@
 
 #define DP_AUX_I2C_WRITE		0x0
 #define DP_AUX_I2C_READ			0x1
-#define DP_AUX_I2C_STATUS		0x2
+#define DP_AUX_I2C_WRITE_STATUS_UPDATE	0x2
 #define DP_AUX_I2C_MOT			0x4
 #define DP_AUX_NATIVE_WRITE		0x8
 #define DP_AUX_NATIVE_READ		0x9
@@ -638,6 +638,13 @@ drm_dp_enhanced_frame_cap(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
 		(dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP);
 }
 
+static inline bool
+drm_dp_tps3_supported(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
+{
+	return dpcd[DP_DPCD_REV] >= 0x12 &&
+		dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED;
+}
+
 /*
  * DisplayPort AUX channel
  */