[media] media: add macros to check if subdev or V4L2 DMA
As we'll be removing entity subtypes from the Kernel, we need
to provide a way for drivers and core to check if a given
entity is represented by a V4L2 subdev or if it is an V4L2
I/O entity (typically with DMA).
Drivers that create entities that don't belong to any defined subdev
category should use MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/include/media/media-entity.h b/include/media/media-entity.h
index ca35e07..2596878 100644
--- a/include/media/media-entity.h
+++ b/include/media/media-entity.h
@@ -220,6 +220,40 @@
return id;
}
+static inline bool is_media_entity_v4l2_io(struct media_entity *entity)
+{
+ if (!entity)
+ return false;
+
+ switch (entity->type) {
+ case MEDIA_ENT_T_V4L2_VIDEO:
+ case MEDIA_ENT_T_V4L2_VBI:
+ case MEDIA_ENT_T_V4L2_SWRADIO:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static inline bool is_media_entity_v4l2_subdev(struct media_entity *entity)
+{
+ if (!entity)
+ return false;
+
+ switch (entity->type) {
+ case MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN:
+ case MEDIA_ENT_T_V4L2_SUBDEV_SENSOR:
+ case MEDIA_ENT_T_V4L2_SUBDEV_FLASH:
+ case MEDIA_ENT_T_V4L2_SUBDEV_LENS:
+ case MEDIA_ENT_T_V4L2_SUBDEV_DECODER:
+ case MEDIA_ENT_T_V4L2_SUBDEV_TUNER:
+ return true;
+
+ default:
+ return false;
+ }
+}
+
#define MEDIA_ENTITY_ENUM_MAX_DEPTH 16
#define MEDIA_ENTITY_ENUM_MAX_ID 64
diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h
index 8e98968..c931464 100644
--- a/include/uapi/linux/media.h
+++ b/include/uapi/linux/media.h
@@ -75,6 +75,9 @@
#define MEDIA_ENT_T_V4L2_SWRADIO (MEDIA_ENT_T_V4L2_BASE + 6)
/* V4L2 Sub-device entities */
+
+#define MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN MEDIA_ENT_T_V4L2_SUBDEV_BASE
+
#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 1)
#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 2)
#define MEDIA_ENT_T_V4L2_SUBDEV_LENS (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 3)
