[PATCH RFC 0/4] Update imx678 to act as a common Sony Starvis 2 driver.

[Dave Stevenson <dave.stevenson@raspberrypi.com>]

The IMX678 (8MPix) driver has been accepted.

Whilst preparing a patchset for IMX662 (1080p), I observed such
commonality between the two that it seemed sensible to attempt
a common driver rather than submitting a separate IMX662 series
again.

On checking my box of sensors, I found I had an IMX675 (5MPix) as
well, so that has been incorporated.

This set proposes a common driver that is working with all 3 of
those sensors.
It's sent as an RFC to gather confirmation that the resulting driver
structure is acceptable as implied by [1].

If it is viewed as acceptable then there is still a modest amount
of tidying up required:
- DT binding updates for the extra compatibles.
- Rename the common functions so that the model references are
  only on the model specific parts.
- Add the Sony init sequence for IMX662.
- Check the init sequence for IMX675 (I'm waiting on a datasheet).
- Update the 2 lane mode handling of HMAX. IMX662 can achieve the
  same maximum framerate in 2 lane mode with a link freq of 594MHz
  or greater, and I suspect others can do so too.
- Hopefully add IMX585 (8MPix) to the supported list, and Jai has
  mentioned IMX676 (12MPix) as well.

I wanted to confirm that there aren't any major objections before
doing those cleanups though.

For anyone testing on a Pi, I've thrown a branch at [2] which includes
overlays for each. I've tested with modules from Soho Enterprises,
but there seem to be a few different vendors around.

[1] https://lore.kernel.org/linux-media/20260312150437.1091195-1-eagle.alexander923@gmail.com/T/#md6a186b4abd05fb035d020ce0bc562455ef5bed1
[2] https://github.com/6by9/linux/tree/rpi-7.2.y-starvis

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
Dave Stevenson (4):
      media: i2c: imx678: Always program the sensor in window mode
      media: i2c: imx678: Parameterise the configuration to allow for other models
      media: i2c: imx678: Add imx662 support to the driver
      media: i2c: imx678: Add imx675 support to the driver

 drivers/media/i2c/imx678.c | 451 +++++++++++++++++++++++++++++++++++++++------
 1 file changed, 393 insertions(+), 58 deletions(-)
---
base-commit: 31152f5b0f8719f92063b8c6196cd5e34106c73d
change-id: 20260804-media-starvis2-65a5bc405b74

Best regards,
-- 
Dave Stevenson <dave.stevenson@raspberrypi.com>