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[media] uapi/media.h: Fix entity namespace

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Now that interfaces got created, we need to fix the entity
namespace.

So, let's create a consistent new namespace and add backward
compatibility macros to keep the old namespace preserved.

Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab
2015-08-21 11:40:34 -03:00
parent 8ddb90d2e5
commit 32fdc0e1a8
2 changed files with 69 additions and 31 deletions
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74
include/uapi/linux/media.h
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@@ -42,31 +42,69 @@ struct media_device_info {
#define MEDIA_ENT_ID_FLAG_NEXT (1 << 31)
/*
* Base numbers for entity types
*
* Please notice that the huge gap of 16 bits for each base is overkill!
* 8 bits is more than enough to avoid starving entity types for each
* subsystem.
*
* However, It is kept this way just to avoid binary breakages with the
* namespace provided on legacy versions of this header.
*/
#define MEDIA_ENT_T_DVB_BASE 0x00000000
#define MEDIA_ENT_T_V4L2_BASE 0x00010000
#define MEDIA_ENT_T_V4L2_SUBDEV_BASE 0x00020000
/*
* V4L2 entities - Those are used for DMA (mmap/DMABUF) and
* read()/write() data I/O associated with the V4L2 devnodes.
*/
#define MEDIA_ENT_T_V4L2_VIDEO (MEDIA_ENT_T_V4L2_BASE + 1)
/*
* Please notice that numbers between MEDIA_ENT_T_V4L2_BASE + 2 and
* MEDIA_ENT_T_V4L2_BASE + 4 can't be used, as those values used
* to be declared for FB, ALSA and DVB entities.
* As those values were never actually used in practice, we're just
* adding them as backward compatibility macros and keeping the
* numberspace clean here. This way, we avoid breaking compilation,
* in the case of having some userspace application using the old
* symbols.
*/
#define MEDIA_ENT_T_V4L2_VBI (MEDIA_ENT_T_V4L2_BASE + 5)
#define MEDIA_ENT_T_V4L2_SWRADIO (MEDIA_ENT_T_V4L2_BASE + 6)
/* V4L2 Sub-device entities */
#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)
/* A converter of analogue video to its digital representation. */
#define MEDIA_ENT_T_V4L2_SUBDEV_DECODER (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 4)
/* Tuner entity is actually both V4L2 and DVB subdev */
#define MEDIA_ENT_T_V4L2_SUBDEV_TUNER (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 5)
/* DVB entities */
#define MEDIA_ENT_T_DVB_DEMOD (MEDIA_ENT_T_DVB_BASE + 1)
#define MEDIA_ENT_T_DVB_DEMUX (MEDIA_ENT_T_DVB_BASE + 2)
#define MEDIA_ENT_T_DVB_TSOUT (MEDIA_ENT_T_DVB_BASE + 3)
#define MEDIA_ENT_T_DVB_CA (MEDIA_ENT_T_DVB_BASE + 4)
#define MEDIA_ENT_T_DVB_NET_DECAP (MEDIA_ENT_T_DVB_BASE + 5)
/* Legacy symbols used to avoid userspace compilation breakages */
#define MEDIA_ENT_TYPE_SHIFT 16
#define MEDIA_ENT_TYPE_MASK 0x00ff0000
#define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff
#define MEDIA_ENT_T_DEVNODE (1 << MEDIA_ENT_TYPE_SHIFT)
#define MEDIA_ENT_T_DEVNODE_V4L (MEDIA_ENT_T_DEVNODE + 1)
#define MEDIA_ENT_T_DEVNODE MEDIA_ENT_T_V4L2_BASE
#define MEDIA_ENT_T_V4L2_SUBDEV MEDIA_ENT_T_V4L2_SUBDEV_BASE
#define MEDIA_ENT_T_DEVNODE_V4L MEDIA_ENT_T_V4L2_VIDEO
#define MEDIA_ENT_T_DEVNODE_FB (MEDIA_ENT_T_DEVNODE + 2)
#define MEDIA_ENT_T_DEVNODE_ALSA (MEDIA_ENT_T_DEVNODE + 3)
#define MEDIA_ENT_T_DEVNODE_DVB_FE (MEDIA_ENT_T_DEVNODE + 4)
#define MEDIA_ENT_T_DEVNODE_DVB_DEMUX (MEDIA_ENT_T_DEVNODE + 5)
#define MEDIA_ENT_T_DEVNODE_DVB_DVR (MEDIA_ENT_T_DEVNODE + 6)
#define MEDIA_ENT_T_DEVNODE_DVB_CA (MEDIA_ENT_T_DEVNODE + 7)
#define MEDIA_ENT_T_DEVNODE_DVB_NET (MEDIA_ENT_T_DEVNODE + 8)
#define MEDIA_ENT_T_DEVNODE_DVB (MEDIA_ENT_T_DEVNODE + 4)
/* Legacy symbol. Use it to avoid userspace compilation breakages */
#define MEDIA_ENT_T_DEVNODE_DVB MEDIA_ENT_T_DEVNODE_DVB_FE
#define MEDIA_ENT_T_V4L2_SUBDEV (2 << MEDIA_ENT_TYPE_SHIFT)
#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR (MEDIA_ENT_T_V4L2_SUBDEV + 1)
#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH (MEDIA_ENT_T_V4L2_SUBDEV + 2)
#define MEDIA_ENT_T_V4L2_SUBDEV_LENS (MEDIA_ENT_T_V4L2_SUBDEV + 3)
/* A converter of analogue video to its digital representation. */
#define MEDIA_ENT_T_V4L2_SUBDEV_DECODER (MEDIA_ENT_T_V4L2_SUBDEV + 4)
#define MEDIA_ENT_T_V4L2_SUBDEV_TUNER (MEDIA_ENT_T_V4L2_SUBDEV + 5)
/* Entity types */
#define MEDIA_ENT_FL_DEFAULT (1 << 0)