linux-toradex.git/include/media, branch v6.0-rc1

Merge tag 'spdx-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx

2022-08-04T19:12:54+00:00

Pull SPDX updates from Greg KH:
 "Here is the set of SPDX comment updates for 6.0-rc1.

  Nothing huge here, just a number of updated SPDX license tags and
  cleanups based on the review of a number of common patterns in GPLv2
  boilerplate text.

  Also included in here are a few other minor updates, two USB files,
  and one Documentation file update to get the SPDX lines correct.

  All of these have been in the linux-next tree for a very long time"

* tag 'spdx-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx: (28 commits)
  Documentation: samsung-s3c24xx: Add blank line after SPDX directive
  x86/crypto: Remove stray comment terminator
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_406.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_398.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_391.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_390.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_385.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_320.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_319.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_318.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_298.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_292.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_179.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_168.RULE (part 2)
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_168.RULE (part 1)
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_160.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_152.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_149.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_147.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_133.RULE
  ...

media: mc-entity: Add a new helper function to get a remote pad for a pad

2022-07-17T10:23:51+00:00

The newly added media_entity_remote_source_pad_unique() helper function
handles use cases where the entity has a link enabled uniqueness
constraint covering all pads. There are use cases where the constraint
covers a specific pad only. Add a new media_pad_remote_pad_unique()
function to handle this. It operates as
media_entity_remote_source_pad_unique(), but on a given pad instead of
on the entity.

Signed-off-by: Laurent Pinchart 
Acked-by: Hans Verkuil 
Acked-by: Sakari Ailus 
Signed-off-by: Mauro Carvalho Chehab

media: mc-entity: Add a new helper function to get a remote pad

2022-07-17T10:23:10+00:00

The media_entity_remote_pad_first() helper function returns the first
remote pad it finds connected to a given pad. Beside being possibly
non-deterministic (as it stops at the first enabled link), the fact that
it returns the first match makes it unsuitable for drivers that need to
guarantee that a single link is enabled, for instance when an entity can
process data from one of multiple sources at a time.

For those use cases, add a new helper function,
media_entity_remote_pad_unique(), that operates on an entity and returns
a remote pad, with a guarantee that only one link is enabled. To ease
its use in drivers, also add an inline wrapper that locates source pads
specifically. A wrapper that locates sink pads can easily be added when
needed.

Signed-off-by: Laurent Pinchart 
Acked-by: Hans Verkuil 
Acked-by: Sakari Ailus 
Signed-off-by: Mauro Carvalho Chehab

media: mc-entity: Rename media_entity_remote_pad() to media_pad_remote_pad_first()

2022-07-17T10:21:35+00:00

The media_entity_remote_pad() is misnamed, as it operates on a pad and
not an entity. Rename it to media_pad_remote_pad_first() to clarify its
behaviour.

Signed-off-by: Laurent Pinchart 
Reviewed-by: Hans Verkuil 
Acked-by: Sakari Ailus 
Signed-off-by: Mauro Carvalho Chehab

media: v4l2-async: Add notifier operation to destroy asd instances

2022-07-17T10:20:08+00:00

Drivers typically extend the v4l2_async_subdev structure by embedding it
in a driver-specific structure, to store per-subdev custom data. The
v4l2_async_subdev instances are freed by the v4l2-async framework, which
makes this mechanism cumbersome to use safely when custom data needs
special treatment to be destroyed (such as freeing additional memory, or
releasing references to kernel objects).

To ease this, add a .destroy() operation to the
v4l2_async_notifier_operations structure. The operation is called right
before the v4l2_async_subdev is freed, giving drivers a chance to
destroy data if needed.

Signed-off-by: Laurent Pinchart 
Reviewed-by: Hans Verkuil 
Acked-by: Sakari Ailus 
Signed-off-by: Mauro Carvalho Chehab

media: videobuf2: Introduce vb2_find_buffer()

2022-07-17T10:10:11+00:00

All users of vb2_find_timestamp() combine it with vb2_get_buffer()
to retrieve a videobuf2 buffer, given a u64 timestamp.

Introduce an API for this use-case. Users will be converted to the new
API as follow-up commits.

Signed-off-by: Ezequiel Garcia 
Acked-by: Tomasz Figa 
Reviewed-by: Philipp Zabel 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: uapi: move HEVC stateless controls out of staging

2022-07-15T16:36:58+00:00

HEVC uAPI is used by 2 mainline drivers (Hantro, Cedrus)
and at least 2 out-of-tree drivers (rkvdec, RPi).
The uAPI has been reviewed so it is time to make it 'public' by
un-staging it.

Signed-off-by: Benjamin Gaignard 
Reviewed-by: Ezequiel Garcia 
Acked-by: Nicolas Dufresne 
Tested-by: Jernej Skrabec 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: uapi: Change data_bit_offset definition

2022-07-15T16:36:58+00:00

'F.7.3.6.1 General slice segment header syntax' section of HEVC
specification describes that a slice header always end aligned on
byte boundary, therefore we only need to provide the data offset in bytes.

Signed-off-by: Benjamin Gaignard 
Reviewed-by: Ezequiel Garcia 
Acked-by: Nicolas Dufresne 
Tested-by: Jernej Skrabec 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: uapi: HEVC: fix padding in v4l2 control structures

2022-07-15T16:36:58+00:00

Fix padding where needed to remove holes

Signed-off-by: Benjamin Gaignard 
Acked-by: Nicolas Dufresne 
Tested-by: Jernej Skrabec 
Reviewed-by: Ezequiel Garcia 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: hantro: Stop using Hantro dedicated control

2022-07-15T16:36:58+00:00

The number of bits to skip in the slice header can be computed
in the driver by using sps, pps and decode_params information.
This makes it possible to remove Hantro dedicated control.

Signed-off-by: Benjamin Gaignard 
Reviewed-by: Ezequiel Garcia 
Acked-by: Nicolas Dufresne 
Tested-by: Jernej Skrabec 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab