Better document the linux/media.h UAPI header, by adding
comments to each entity subtype.

Signed-off-by: Mauro Carvalho Chehab <mche...@osg.samsung.com>

diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h
index 6acc4be1378c..8d47b70b7ea8 100644
--- a/include/uapi/linux/media.h
+++ b/include/uapi/linux/media.h
@@ -44,19 +44,25 @@ struct media_device_info {
 
 /* Used values for media_entity_desc::type */
 
+/* Audio/video streaming bridges */
 #define MEDIA_ENT_T_AV_DMA             (((1 << 16)) + 1)
+
+/* Digital TV entities */
 #define MEDIA_ENT_T_DTV_DEMOD  (MEDIA_ENT_T_AV_DMA + 3)
 #define MEDIA_ENT_T_DTV_DEMUX  (MEDIA_ENT_T_AV_DMA + 4)
 #define MEDIA_ENT_T_DTV_DVR    (MEDIA_ENT_T_AV_DMA + 5)
 #define MEDIA_ENT_T_DTV_CA     (MEDIA_ENT_T_AV_DMA + 6)
 #define MEDIA_ENT_T_DTV_NET    (MEDIA_ENT_T_AV_DMA + 7)
 
+/* Camera entities */
 #define MEDIA_ENT_T_CAM_SENSOR ((2 << 16) + 1)
 #define MEDIA_ENT_T_CAM_FLASH  (MEDIA_ENT_T_CAM_SENSOR + 1)
 #define MEDIA_ENT_T_CAM_LENS   (MEDIA_ENT_T_CAM_SENSOR + 2)
 
+/* Analog TV entities */
 #define MEDIA_ENT_T_ATV_DECODER        (MEDIA_ENT_T_CAM_SENSOR + 3)
 
+/* Radio, Analog TV and/or Digital TV tuners */
 #define MEDIA_ENT_T_TUNER      (MEDIA_ENT_T_CAM_SENSOR + 4)
 
 #if 1
-- 
2.1.0

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