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Commit d87cdb88 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
Browse files

[media] media-device: export the entity function via new ioctl 



Now that entities have a main function, expose it via
MEDIA_IOC_G_TOPOLOGY ioctl.

Please notice that some entities may have secundary functions.
Such use case will be addressed later, when we add support for the
Media Controller properties.

Acked-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 0e576b76

drivers/media/media-device.c

+1 −0
Original line number Diff line number Diff line
@@ -263,6 +263,7 @@ static long __media_device_get_topology(struct media_device *mdev, 
		/* Copy fields to userspace struct if not error */

		memset(&uentity, 0, sizeof(uentity));

		uentity.id = entity->graph_obj.id;

		uentity.function = entity->function;

		strncpy(uentity.name, entity->name,

			sizeof(uentity.name));

include/uapi/linux/media.h

+2 −1
Original line number Diff line number Diff line
@@ -276,7 +276,8 @@ struct media_links_enum { 
struct media_v2_entity {

	__u32 id;

	char name[64];		/* FIXME: move to a property? (RFC says so) */

	__u16 reserved[14];

	__u32 function;		/* Main function of the entity */

	__u16 reserved[12];

};



/* Should match the specific fields at media_intf_devnode */