linux-toradex.git/include/uapi/linux/videodev2.h, branch v5.1-rc1

media: v4l: Add 32-bit packed YUV formats

2019-02-18T19:31:01+00:00

The formats added in this patch include:
 V4L2_PIX_FMT_AYUV32
 V4L2_PIX_FMT_XYUV32
 V4L2_PIX_FMT_VUYA32
 V4L2_PIX_FMT_VUYX32

These formats enable the trasmission of alpha channel data to other
drivers and userspace applications in addition to YUV data. For
example, buffers generated by drivers in one of these formats
can be used by the Weston compositor to display as a texture or
flipped directly onto the overlay planes with the help of a DRM
driver.

Signed-off-by: Vivek Kasireddy 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: videodev2.h: Add more field helper macros

2019-01-16T19:10:43+00:00

Adds two helper macros:

V4L2_FIELD_IS_SEQUENTIAL: returns true if the given field type is
'sequential', that is a full frame is transmitted, or exists in
memory, as all top field lines followed by all bottom field lines,
or vice-versa.

V4L2_FIELD_IS_INTERLACED: returns true if the given field type is
'interlaced', that is a full frame is transmitted, or exists in
memory, as top field lines interlaced with bottom field lines.

Signed-off-by: Steve Longerbeam 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: v4l: uAPI: V4L2_BUF_TYPE_META_OUTPUT is an output buffer type

2019-01-16T18:38:48+00:00

V4L2_BUF_TYPE_META_OUTPUT was added by commit 72148d1a57e7
("media: v4l: Add support for V4L2_BUF_TYPE_META_OUTPUT") but the patch
missed adding the type to the macro telling whether a given type is an
output type or not. Do that now. Getting this wrong leads to handling the
buffer as a capture buffer in a lot of places.

Fixes: 72148d1a57e7 ("media: v4l: Add support for V4L2_BUF_TYPE_META_OUTPUT")

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

media: videodev2.h: add v4l2_timeval_to_ns inline function

2019-01-07T18:18:54+00:00

We want to be able to uniquely identify buffers for stateless
codecs. The internal timestamp (a u64) as stored internally in the
kernel is a suitable candidate for that, but in struct v4l2_buffer
it is represented as a struct timeval.

Add a v4l2_timeval_to_ns() function that converts the struct timeval
into a u64 in the same way that the kernel does. This makes it possible
to use this u64 elsewhere as a unique identifier of the buffer.

Since timestamps are also copied from the output buffer to the
corresponding capture buffer(s) by M2M devices, the u64 can be
used to refer to both output and capture buffers.

The plan is that in the future we redesign struct v4l2_buffer and use
u64 for the timestamp instead of a struct timeval (which has lots of
problems with 32 vs 64 bit and y2038 layout changes), and then there
is no more need to use this function.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

Merge tag 'media/v4.20-7' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

2018-12-25T21:11:30+00:00

Pull more media updates from Mauro Carvalho Chehab:
 "The Intel IPU3 camera driver"

* tag 'media/v4.20-7' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (23 commits)
  media: staging/ipu3-imgu: Add MAINTAINERS entry
  media: staging/ipu3-imgu: Address documentation comments
  media: v4l: Add Intel IPU3 meta buffer formats
  media: doc-rst: Add Intel IPU3 documentation
  media: ipu3-imgu: Fix firmware binary location
  media: ipu3-imgu: Fix compiler warnings
  media: staging/intel-ipu3: Add dual pipe support
  media: staging/intel-ipu3: Add Intel IPU3 meta data uAPI
  media: staging/intel-ipu3: Add imgu top level pci device driver
  media: staging/intel-ipu3: Add v4l2 driver based on media framework
  media: staging/intel-ipu3: Add css pipeline programming
  media: staging/intel-ipu3: css: Initialize css hardware
  media: staging/intel-ipu3: css: Compute and program ccs
  media: staging/intel-ipu3: css: Add static settings for image pipeline
  media: staging/intel-ipu3: css: Add support for firmware management
  media: staging/intel-ipu3: css: Add dma buff pool utility functions
  media: staging/intel-ipu3: Implement DMA mapping functions
  media: staging/intel-ipu3: mmu: Implement driver
  media: staging/intel-ipu3: abi: Add structs
  media: staging/intel-ipu3: abi: Add register definitions and enum
  ...

Merge tag 'v4.20-rc7' into patchwork

2018-12-17T15:34:24+00:00

Linux 4.20-rc7

* tag 'v4.20-rc7': (403 commits)
  Linux 4.20-rc7
  scripts/spdxcheck.py: always open files in binary mode
  checkstack.pl: fix for aarch64
  userfaultfd: check VM_MAYWRITE was set after verifying the uffd is registered
  fs/iomap.c: get/put the page in iomap_page_create/release()
  hugetlbfs: call VM_BUG_ON_PAGE earlier in free_huge_page()
  memblock: annotate memblock_is_reserved() with __init_memblock
  psi: fix reference to kernel commandline enable
  arch/sh/include/asm/io.h: provide prototypes for PCI I/O mapping in asm/io.h
  mm/sparse: add common helper to mark all memblocks present
  mm: introduce common STRUCT_PAGE_MAX_SHIFT define
  alpha: fix hang caused by the bootmem removal
  XArray: Fix xa_alloc when id exceeds max
  drm/vmwgfx: Protect from excessive execbuf kernel memory allocations v3
  MAINTAINERS: Daniel for drm co-maintainer
  drm/amdgpu: drop fclk/gfxclk ratio setting
  IB/core: Fix oops in netdev_next_upper_dev_rcu()
  dm thin: bump target version
  drm/vmwgfx: remove redundant return ret statement
  drm/i915: Flush GPU relocs harder for gen3
  ...

media: v4l: Add support for V4L2_BUF_TYPE_META_OUTPUT

2018-12-14T10:10:48+00:00

The V4L2_BUF_TYPE_META_OUTPUT mirrors the V4L2_BUF_TYPE_META_CAPTURE with
the exception that it is an OUTPUT type. The use case for this is to pass
buffers to the device that are not image data but metadata. The formats,
just as the metadata capture formats, are typically device specific and
highly structured.

Signed-off-by: Sakari Ailus 
Acked-by: Hans Verkuil 
Reviewed-by: Tomasz Figa 
Tested-by: Tian Shu Qiu 
Signed-off-by: Mauro Carvalho Chehab

media: mpeg2-ctrls.h: move MPEG2 state controls to non-public header

2018-12-05T18:06:31+00:00

The MPEG2 state controls for the cedrus stateless MPEG2 driver are
not yet stable. Move them out of the public headers into media/mpeg2-ctrls.h.

Eventually, once this has stabilized, they will be moved back to the
public headers.

Unfortunately I had to cast the control type to a u32 in two switch
statements to prevent a compiler warning about a control type define
not being part of the enum.

Signed-off-by: Hans Verkuil 
Reviewed-by: Paul Kocialkowski 
Signed-off-by: Mauro Carvalho Chehab

media: v4l: Add 4bpp packed depth confidence format CNF4

2018-12-03T18:42:34+00:00

Adding new fourcc CNF4 for 4 bit-per-pixel packed depth confidence
information provided by Intel RealSense cameras. Every two consecutive
pixels are packed into a single byte.

Signed-off-by: Sergey Dorodnicov 
Signed-off-by: Evgeni Raikhel 
Signed-off-by: Laurent Pinchart 
Signed-off-by: Mauro Carvalho Chehab

media: vb2: Allow reqbufs(0) with "in use" MMAP buffers

2018-11-23T11:41:39+00:00

Videobuf2 presently does not allow VIDIOC_REQBUFS to destroy outstanding
buffers if the queue is of type V4L2_MEMORY_MMAP, and if the buffers are
considered "in use".  This is different behavior than for other memory
types and prevents us from deallocating buffers in following two cases:

1) There are outstanding mmap()ed views on the buffer. However even if
   we put the buffer in reqbufs(0), there will be remaining references,
   due to vma .open/close() adjusting vb2 buffer refcount appropriately.
   This means that the buffer will be in fact freed only when the last
   mmap()ed view is unmapped.

2) Buffer has been exported as a DMABUF. Refcount of the vb2 buffer
   is managed properly by VB2 DMABUF ops, i.e. incremented on DMABUF
   get and decremented on DMABUF release. This means that the buffer
   will be alive until all importers release it.

Considering both cases above, there does not seem to be any need to
prevent reqbufs(0) operation, because buffer lifetime is already
properly managed by both mmap() and DMABUF code paths. Let's remove it
and allow userspace freeing the queue (and potentially allocating a new
one) even though old buffers might be still in processing.

To let userspace know that the kernel now supports orphaning buffers
that are still in use, add a new V4L2_BUF_CAP_SUPPORTS_ORPHANED_BUFS
to be set by reqbufs and create_bufs.

[p.zabel@pengutronix.de: added V4L2_BUF_CAP_SUPPORTS_ORPHANED_BUFS,
 updated documentation, and added back debug message]

Signed-off-by: John Sheu 
Reviewed-by: Pawel Osciak 
Signed-off-by: Tomasz Figa 
Signed-off-by: Philipp Zabel 
Acked-by: Sakari Ailus 
Signed-off-by: Hans Verkuil 
[hverkuil-cisco@xs4all.nl: added V4L2-BUF-CAP-SUPPORTS-ORPHANED-BUFS ref]
Signed-off-by: Mauro Carvalho Chehab