[PATCH 0/3] media: i2c: ov5693: Fix mode changes, flips and autosuspend

[Marco Ziliani via B4 Relay <devnull+rylos78.gmail.com@kernel.org>]

Three fixes for the ov5693, found while getting the front camera of the
Microsoft Surface Pro 5 (IPU3) to work, and since tested on IPU6 and
IPU4P Surfaces as well.

Patch 1 programs the mode registers on every stream start. They are
only written on runtime PM resume, so a format change on a sensor that
stays powered never reaches the chip. This is the ov5693 counterpart of
commit 4e1446ac169a ("media: i2c: ov8865: Program the sensor on stream
start").

Patch 2 keeps the reported SBGGR10 order when a single flip is enabled
at full resolution: each flip moves the Bayer phase by one column, so
the output window is shifted by one column when hflip XOR vflip.

Patch 3 drops the usage count at stream stop with
pm_runtime_put_autosuspend(), so that the autosuspend delay counts from
stream stop rather than from the last resume.

Patch 1 has been public and in testing in the linux-surface tree since
2026-10-23 [2]. Simon Kruse's active state conversion [1], posted this
morning, makes the same change as part of a larger rework. Patch 1 is
kept here as a small standalone fix with a Fixes: tag, so that it can
be applied and backported on its own; should the rework land first, I
will rebase patches 2 and 3 on top of it.

Patches 1 and 2 were developed in the linux-surface tree and tested
there on a Surface Pro 5 (IPU3), a Surface Pro 7 (IPU4P) and a Surface
Pro 7+ and Pro 9 (IPU6); patch 3 follows a report by Dario Manresa in
the same thread [2]. The three patches as posted here have also been
run on a Surface Pro 7 (IPU4P) and a Surface Pro 9 (IPU6) there.

[1] https://lore.kernel.org/linux-media/20261027074933.21921-1-simon0x+git@proton.me/
[2] https://github.com/linux-surface/kernel/pull/181

Signed-off-by: Marco Ziliani <rylos78@gmail.com>
---
Marco Ziliani (3):
      media: i2c: ov5693: Program the mode registers on stream start
      media: i2c: ov5693: Keep the Bayer order when flipping at full resolution
      media: i2c: ov5693: Use autosuspend when stopping the stream

 drivers/media/i2c/ov5693.c | 71 ++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 62 insertions(+), 9 deletions(-)
---
base-commit: d7e7bca7169873b46e857c025c10f3336c1258d8
change-id: 20261027-ov5693-fixes-8ec29752893a

Best regards,
--  
Marco Ziliani <rylos78@gmail.com>