[media] media: Media device node support
The media_devnode structure provides support for registering and
unregistering character devices using a dynamic major number. Reference
counting is handled internally, making device drivers easier to write
without having to solve the open/disconnect race condition issue over
and over again.
The code is based on video/v4l2-dev.c.
[mchehab@redhat.com: Remove linux/smp_lock.h include to not break compilation on bisect]
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/Kconfig b/drivers/media/Kconfig
index 81b3ba8..2466f2b 100644
--- a/drivers/media/Kconfig
+++ b/drivers/media/Kconfig
@@ -14,6 +14,19 @@
comment "Multimedia core support"
#
+# Media controller
+#
+
+config MEDIA_CONTROLLER
+ bool "Media Controller API (EXPERIMENTAL)"
+ depends on EXPERIMENTAL
+ ---help---
+ Enable the media controller API used to query media devices internal
+ topology and configure it dynamically.
+
+ This API is mostly used by camera interfaces in embedded platforms.
+
+#
# V4L core and enabled API's
#