linux-kernel - [PATCH 0/4] media: subdev: Improve stream enable/disable machinery

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Date: Thu, 04 Apr 2024 13:49:59 +0300
From: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Hans Verkuil <hverkuil@...all.nl>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Sakari Ailus <sakari.ailus@...ux.intel.com>, 
 Umang Jain <umang.jain@...asonboard.com>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
Subject: [PATCH 0/4] media: subdev: Improve stream enable/disable machinery

This series works on the .s_stream, .enable_streams, .disable_streams
related code:

"media: subdev: Add checks for subdev features" adds check to verify
that the subdevs implement the proper mix of the above ops.

"media: subdev: Fix use of sd->enabled_streams in call_s_stream()" fixes
somewhat questionable use of sd->enabled_streams in call_s_stream().

"media: subdev: Improve v4l2_subdev_enable/disable_streams_fallback"
drops the restriction of supporting only a single source pads, and
prepares the way for the following patch.

"media: subdev: Support enable/disable_streams for non-streams subdevs"
makes it possible for non-streams subdevs to use .enable_streams and
disable_streams, deprecating the earlier patch "[PATCH] media:
v4l2-subdev: Support enable/disable_streams for single-pad subdevs".

I have tested this on RPi5 with multiple streams, but I still need to
figure out ways to test the other scenarios.

 Tomi

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
---
Tomi Valkeinen (4):
      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: Support enable/disable_streams for non-streams subdevs

 drivers/media/v4l2-core/v4l2-subdev.c | 189 +++++++++++++++++++++++-----------
 include/media/v4l2-subdev.h           |  11 +-
 2 files changed, 133 insertions(+), 67 deletions(-)
---
base-commit: b82779648dfd3814df4e381f086326ec70fd791f
change-id: 20240404-enable-streams-impro-db8bcd898471

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