diff --git a/include/drm/drm_displayid.h b/include/drm/drm_displayid.h
index ec64d141f578..0ed9445b5482 100644
--- a/include/drm/drm_displayid.h
+++ b/include/drm/drm_displayid.h
@@ -26,35 +26,36 @@
 
 struct edid;
 
-#define DATA_BLOCK_PRODUCT_ID 0x00
-#define DATA_BLOCK_DISPLAY_PARAMETERS 0x01
-#define DATA_BLOCK_COLOR_CHARACTERISTICS 0x02
-#define DATA_BLOCK_TYPE_1_DETAILED_TIMING 0x03
-#define DATA_BLOCK_TYPE_2_DETAILED_TIMING 0x04
-#define DATA_BLOCK_TYPE_3_SHORT_TIMING 0x05
-#define DATA_BLOCK_TYPE_4_DMT_TIMING 0x06
-#define DATA_BLOCK_VESA_TIMING 0x07
-#define DATA_BLOCK_CEA_TIMING 0x08
-#define DATA_BLOCK_VIDEO_TIMING_RANGE 0x09
-#define DATA_BLOCK_PRODUCT_SERIAL_NUMBER 0x0a
-#define DATA_BLOCK_GP_ASCII_STRING 0x0b
-#define DATA_BLOCK_DISPLAY_DEVICE_DATA 0x0c
-#define DATA_BLOCK_INTERFACE_POWER_SEQUENCING 0x0d
-#define DATA_BLOCK_TRANSFER_CHARACTERISTICS 0x0e
-#define DATA_BLOCK_DISPLAY_INTERFACE 0x0f
-#define DATA_BLOCK_STEREO_DISPLAY_INTERFACE 0x10
-#define DATA_BLOCK_TILED_DISPLAY 0x12
-#define DATA_BLOCK_CTA 0x81
+/* DisplayID Structure v1r2 Data Blocks */
+#define DATA_BLOCK_PRODUCT_ID			0x00
+#define DATA_BLOCK_DISPLAY_PARAMETERS		0x01
+#define DATA_BLOCK_COLOR_CHARACTERISTICS	0x02
+#define DATA_BLOCK_TYPE_1_DETAILED_TIMING	0x03
+#define DATA_BLOCK_TYPE_2_DETAILED_TIMING	0x04
+#define DATA_BLOCK_TYPE_3_SHORT_TIMING		0x05
+#define DATA_BLOCK_TYPE_4_DMT_TIMING		0x06
+#define DATA_BLOCK_VESA_TIMING			0x07
+#define DATA_BLOCK_CEA_TIMING			0x08
+#define DATA_BLOCK_VIDEO_TIMING_RANGE		0x09
+#define DATA_BLOCK_PRODUCT_SERIAL_NUMBER	0x0a
+#define DATA_BLOCK_GP_ASCII_STRING		0x0b
+#define DATA_BLOCK_DISPLAY_DEVICE_DATA		0x0c
+#define DATA_BLOCK_INTERFACE_POWER_SEQUENCING	0x0d
+#define DATA_BLOCK_TRANSFER_CHARACTERISTICS	0x0e
+#define DATA_BLOCK_DISPLAY_INTERFACE		0x0f
+#define DATA_BLOCK_STEREO_DISPLAY_INTERFACE	0x10
+#define DATA_BLOCK_TILED_DISPLAY		0x12
+#define DATA_BLOCK_VENDOR_SPECIFIC		0x7f
+#define DATA_BLOCK_CTA				0x81
 
-#define DATA_BLOCK_VENDOR_SPECIFIC 0x7f
-
-#define PRODUCT_TYPE_EXTENSION 0
-#define PRODUCT_TYPE_TEST 1
-#define PRODUCT_TYPE_PANEL 2
-#define PRODUCT_TYPE_MONITOR 3
-#define PRODUCT_TYPE_TV 4
-#define PRODUCT_TYPE_REPEATER 5
-#define PRODUCT_TYPE_DIRECT_DRIVE 6
+/* DisplayID Structure v1r2 Product Type */
+#define PRODUCT_TYPE_EXTENSION			0
+#define PRODUCT_TYPE_TEST			1
+#define PRODUCT_TYPE_PANEL			2
+#define PRODUCT_TYPE_MONITOR			3
+#define PRODUCT_TYPE_TV				4
+#define PRODUCT_TYPE_REPEATER			5
+#define PRODUCT_TYPE_DIRECT_DRIVE		6
 
 struct displayid_header {
 	u8 rev;