kernel/include/media, branch linux-6.11.y

media: v4l2-core: v4l2-dv-timings: check cvt/gtf result

2024-12-05T12:54:22Z

commit 9f070b1862f3411b8bcdfd51a8eaad25286f9deb upstream. The v4l2_detect_cvt/gtf functions should check the result against the timing capabilities: these functions calculate the timings, so if they are out of bounds, they should be rejected. To do this, add the struct v4l2_dv_timings_cap as argument to those functions. This required updates to the adv7604 and adv7842 drivers since the prototype of these functions has now changed. The timings struct that is passed to v4l2_detect_cvt/gtf in those two drivers is filled with the timings detected by the hardware. The vivid driver was also updated, but an additional check was added: the width and height specified by VIDIOC_S_DV_TIMINGS has to match the calculated result, otherwise something went wrong. Note that vivid *emulates* hardware, so all the values passed to the v4l2_detect_cvt/gtf functions came from the timings struct that was filled by userspace and passed on to the driver via VIDIOC_S_DV_TIMINGS. So these fields can contain random data. Both the constraints check via struct v4l2_dv_timings_cap and the additional width/height check ensure that the resulting timings are sane and not messed up by the v4l2_detect_cvt/gtf calculations. Signed-off-by: Hans Verkuil Fixes: 2576415846bc ("[media] v4l2: move dv-timings related code to v4l2-dv-timings.c") Cc: stable@vger.kernel.org Reported-by: syzbot+a828133770f62293563e@syzkaller.appspotmail.com Closes: https://lore.kernel.org/linux-media/000000000000013050062127830a@google.com/ Signed-off-by: Greg Kroah-Hartman

media: rc: add keymap for MyGica UTV3 remote

2024-06-29T10:20:05Z

Add keymap for the simple IR (RC-5) remote that comes with the MyGica UTV3 Analog USB2.0 TV Box video capture card. Signed-off-by: Nils Rothaug Signed-off-by: Sean Young Signed-off-by: Hans Verkuil

media: tuner-simple: Add support for Tena TNF931D-DFDR1

2024-06-29T10:20:05Z

Tuner ranges were determined by USB capturing the vendor driver of a MyGica UTV3 video capture card. Signed-off-by: Nils Rothaug Signed-off-by: Sean Young Signed-off-by: Hans Verkuil

media: v4l: subdev: Fix typo in documentation

2024-06-26T06:14:03Z

Replace the incorrect reference to the v4l2_subdev_enable_stream() function with the correct v4l2_subdev_enable_streams() spelling. Fixes: d0749adb3070 ("media: v4l2-subdev: Add subdev .(enable|disable)_streams() operations") Reviewed-by: Tomi Valkeinen Link: https://lore.kernel.org/r/20240619225343.15873-1-laurent.pinchart@ideasonboard.com Signed-off-by: Laurent Pinchart

media: v4l2-jpeg: Export reference quantization and huffman tables

2024-06-24T09:05:06Z

Export reference quantization and huffman tables as provided in ITU-T.81 so that they can be re-used by other JPEG drivers. These are example tables provided in ITU-T.81 as reference tables and the JPEG encoders are free to use either these or their own proprietary tables. Also add necessary prefixes to be used for huffman tables in global header file. Signed-off-by: Devarsh Thakkar Reviewed-by: Hans Verkuil Signed-off-by: Sebastian Fricke Signed-off-by: Hans Verkuil

media: v4l2-subdev: Provide const-aware subdev state accessors

2024-06-04T06:31:25Z

It would be useful to mark instances of v4l2_subdev_state structures as const when code needs to access them read-only. This isn't currently possible, as the v4l2_subdev_state_get_*() accessor functions take a non-const pointer to the state. Use _Generic() to provide two different versions of the accessors, for const and non-const states respectively. The former returns a const pointer to the requested format, rectangle or interval, implementing const-correctness. The latter returns a non-const pointer, preserving the current behaviour for drivers. Signed-off-by: Laurent Pinchart Reviewed-by: Sakari Ailus Reviewed-by: Tomi Valkeinen [Sakari Ailus: Drop the word "below" from the text.] Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil

media: v4l2-subdev: Fix v4l2_subdev_state_get_format() documentation

2024-06-04T06:31:25Z

The documentation of the v4l2_subdev_state_get_format() macro incorrectly references __v4l2_subdev_state_get_format() instead of __v4l2_subdev_state_gen_call(). Fix it, and also update the list of similar macros to add the missing v4l2_subdev_state_get_interval(). Suggested-by: Sakari Ailus Signed-off-by: Laurent Pinchart Reviewed-by: Sakari Ailus Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil

media: subdev: Improve s_stream documentation

2024-06-04T06:31:25Z

Now that enable/disable_streams operations are available for single-stream subdevices too, there's no reason to use the old s_stream operation on new drivers. Extend the documentation reflecting this. Signed-off-by: Tomi Valkeinen Reviewed-by: Umang Jain Reviewed-by: Laurent Pinchart Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil

media: subdev: Add v4l2_subdev_is_streaming()

2024-06-04T06:31:24Z

Add a helper function which returns whether the subdevice is streaming, i.e. if .s_stream or .enable_streams has been called successfully. Reviewed-by: Umang Jain Reviewed-by: Laurent Pinchart Tested-by: Umang Jain Signed-off-by: Tomi Valkeinen Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil

media: subdev: Improve v4l2_subdev_enable/disable_streams_fallback

2024-06-04T06:31:24Z

v4l2_subdev_enable/disable_streams_fallback() supports falling back to .s_stream() for subdevs with a single source pad. It also tracks the enabled streams for that one pad in the sd->enabled_streams field. Tracking the enabled streams with sd->enabled_streams does not make sense, as with .s_stream() there can only be a single stream per pad. Thus, as the v4l2_subdev_enable/disable_streams_fallback() only supports a single source pad, all we really need is a boolean which tells whether streaming has been enabled on this pad or not. However, as we only need a true/false state for a pad (instead of tracking which streams have been enabled for a pad), we can easily extend the fallback mechanism to support multiple source pads as we only need to keep track of which pads have been enabled. Change the sd->enabled_streams field to sd->enabled_pads, which is a 64-bit bitmask tracking the enabled source pads. With this change we can remove the restriction that v4l2_subdev_enable/disable_streams_fallback() only supports a single source pad. Reviewed-by: Laurent Pinchart Tested-by: Umang Jain Signed-off-by: Tomi Valkeinen Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil