kernel/linux.git/include/media, branch v6.19.11

media: v4l2-mem2mem: Add a kref to the v4l2_m2m_dev structure

2026-03-04T12:21:05+00:00

[ Upstream commit db6b97a4f8041e479be9ef4b8b07022636c96f50 ] Adding a reference count to the v4l2_m2m_dev structure allow safely sharing it across multiple hardware nodes. This can be used to prevent running jobs concurrently on m2m cores that have some internal resource sharing. Signed-off-by: Ming Qian Reviewed-by: Frank Li Signed-off-by: Nicolas Dufresne Signed-off-by: Hans Verkuil [hverkuil: fix typos in v4l2_m2m_put documentation] Stable-dep-of: e0203ddf9af7 ("media: verisilicon: Avoid G2 bus error while decoding H.264 and HEVC") Signed-off-by: Sasha Levin

media: dvb-core: dmxdevfilter must always flush bufs

2026-03-04T12:19:54+00:00

[ Upstream commit c4e620eccbef76aa5564ebb295e23d6540e27215 ] Currently the buffers are being filled until full, which works fine for the transport stream, but not when reading sections, those have to be returned to userspace immediately, otherwise dvbv5-scan will just wait forever. Add a 'flush' argument to dvb_vb2_fill_buffer to indicate whether the buffer must be flushed or wait until it is full. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin

media: v4l2-isp: Rename block_info to block_type_info

2025-11-14T14:48:49+00:00

The v4l2_isp_params_block_info structure contains validation information that apply to a block -type- and not only to a specific ISP block implementation. Clarify this by renaming v4l2_isp_params_block_info in v4l2_isp_params_block_type_info and update the documentation and the users of v4l2-isp accordingly. Signed-off-by: Jacopo Mondi Reviewed-by: Laurent Pinchart Reviewed-by: Sakari Ailus Signed-off-by: Hans Verkuil

media: v4l2-core: Introduce v4l2-isp.c

2025-11-14T14:48:48+00:00

Add to the V4L2 framework helper functions to support drivers when validating a buffer of V4L2 ISP parameters. Driver shall use v4l2_isp_params_validate_buffer_size() to verify the size correctness of the data received from userspace, and after having copied the data to a kernel-only memory location, complete the validation by calling v4l2_isp_params_validate_buffer(). Reviewed-by: Daniel Scally Reviewed-by: Laurent Pinchart Reviewed-by: Michael Riesch Acked-by: Sakari Ailus Tested-by: Lad Prabhakar Signed-off-by: Jacopo Mondi Signed-off-by: Hans Verkuil

media: v4l: Add helper to get number of active lanes via a pad

2025-11-13T09:57:52+00:00

Sometimes, users will not use all of the MIPI CSI 2 lanes available when connecting to the MIPI CSI receiver of their device. Add a helper function that checks the mbus_config for the device driver to allow users to define the number of active data lanes through the get_mbus_config op. If the driver does not implement this op, fall back to using the maximum number of lanes available. Reviewed-by: Frank Li Reviewed-by: Laurent Pinchart Signed-off-by: Isaac Scott Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil

media: saa7146: Replace saa7146_ext_vv.vbi_fops with write function

2025-11-03T14:58:42+00:00

The vbi_fops stored in struct saa7146_ext_vv is a full v4l2_file_operations, but only its .write field is used. Replace it with a single vbi_write function pointer to save memory. Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil

media: mc: Make macros to obtain containers const-aware

2025-11-03T14:58:41+00:00

Retain the constness of the graph objects and interfaces in macros to obtain their containers, by switching to container_of_const(). Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil

media: v4l2-dev: Make macros to obtain containers const-aware

2025-11-03T14:58:41+00:00

Retain the constness of the object in media_entity_to_video_device() and to_video_device(), by switching to container_of_const(). Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil

media: v4l2-subdev: Make media_entity_to_v4l2_subdev() const-aware

2025-11-03T14:58:41+00:00

Retain the constness of the object in media_entity_to_v4l2_subdev(), by switching to container_of_const(). Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil

media: v4l2-mem2mem: Don't copy frame flags in v4l2_m2m_buf_copy_metadata()

2025-10-17T09:31:16+00:00

The v4l2_m2m_buf_copy_metadata() function takes a boolean copy_frame_flags argument. When true, it causes the function to copy the V4L2_BUF_FLAG_KEYFRAME, V4L2_BUF_FLAG_BFRAME and V4L2_BUF_FLAG_PFRAME flags from the output buffer to the capture buffer. There is no use cases in any upstream driver for copying the flags. KEY/P/B frames are properties of the bitstream buffer in some formats. Once decoded, this is no longer a property of the video frame and should be discarded. It was considered useful to know if an uncompressed frame was decoded from a KEY/P/B compressed frame, and to preserve that information if that same uncompressed frame was passed through another M2M device (e.g. a scaler). However, the V4L2 documentation makes it clear that the flags are meant for compressed frames only. Drop the copy_frame_flags argument from v4l2_m2m_buf_copy_metadata(). The change to drivers was performed with the following Coccinelle semantic patch: @@ expression src; expression dst; expression flag; @@ - v4l2_m2m_buf_copy_metadata(src, dst, flag); + v4l2_m2m_buf_copy_metadata(src, dst); include/media/v4l2-mem2mem.h and drivers/media/v4l2-core/v4l2-mem2mem.c have been updated manually. Signed-off-by: Laurent Pinchart Reviewed-by: Philipp Zabel Reviewed-by: Benjamin Gaignard Signed-off-by: Hans Verkuil