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media: uapi/linux/media.h: add request API 

Define the public request API.

This adds the new MEDIA_IOC_REQUEST_ALLOC ioctl to allocate a request
and two ioctls that operate on a request in order to queue the
contents of the request to the driver and to re-initialize the
request.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Hans Verkuil 2018-05-21 04:54:26 -04:00 committed by Mauro Carvalho Chehab
parent cbb6a7f52b
commit 66431c0bab
1 changed files with 8 additions and 0 deletions
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8
include/uapi/linux/media.h
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@ -369,6 +369,14 @@ struct media_v2_topology {
#define MEDIA_IOC_ENUM_LINKS _IOWR('|', 0x02, struct media_links_enum)
#define MEDIA_IOC_SETUP_LINK _IOWR('|', 0x03, struct media_link_desc)
#define MEDIA_IOC_G_TOPOLOGY _IOWR('|', 0x04, struct media_v2_topology)
#define MEDIA_IOC_REQUEST_ALLOC _IOR ('|', 0x05, int)
/*
* These ioctls are called on the request file descriptor as returned
* by MEDIA_IOC_REQUEST_ALLOC.
*/
#define MEDIA_REQUEST_IOC_QUEUE _IO('|', 0x80)
#define MEDIA_REQUEST_IOC_REINIT _IO('|', 0x81)
#ifndef __KERNEL__