[PATCH v2 0/9] media: subdev: Improve stream enable/disable machinery

[Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>]

This series works on the .s_stream, .enable_streams, .disable_streams
related code. The main feature introduced here, in the last patch, is
adding support for .enable/disable_streams() for subdevs that do not
implement full streams support.

Additionally we add support for the privacy led when
v4l2_subdev_enable/disable_streams() is used.

I have tested this on RPi5.

 Tomi

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
---
Changes in v2:
- New patches for privacy led
- Use v4l2_subdev_has_op()
- Use BITS_PER_BYTE instead of 8
- Fix 80+ line issues
- Fix typos
- Check for pad < 64 also in the non-routing .enable/disable_streams code path
- Dropped "media: subdev: Support enable/disable_streams for non-streams
  subdevs", which is implemented in a different way in new patches in this series
- Link to v1: https://lore.kernel.org/r/20240404-enable-streams-impro-v1-0-1017a35bbe07@ideasonboard.com

---
Tomi Valkeinen (9):
      media: subdev: Add privacy led helpers
      media: subdev: Use v4l2_subdev_has_op() in v4l2_subdev_enable/disable_streams()
      media: subdev: Add checks for subdev features
      media: subdev: Fix use of sd->enabled_streams in call_s_stream()
      media: subdev: Improve v4l2_subdev_enable/disable_streams_fallback
      media: subdev: Add v4l2_subdev_is_streaming()
      media: subdev: Support privacy led in v4l2_subdev_enable/disable_streams()
      media: subdev: Refactor v4l2_subdev_enable/disable_streams()
      media: subdev: Support single-stream case in v4l2_subdev_enable/disable_streams()

 drivers/media/v4l2-core/v4l2-subdev.c | 364 ++++++++++++++++++++--------------
 include/media/v4l2-subdev.h           |  25 ++-
 2 files changed, 237 insertions(+), 152 deletions(-)
---
base-commit: b82779648dfd3814df4e381f086326ec70fd791f
change-id: 20240404-enable-streams-impro-db8bcd898471

Best regards,
-- 
Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>