[PATCH v10 0/8] Enable cameras on Dell Latitude 5285 2-in-1

[Thierry Chatard <tchatard@gmail.com>]

This series enables the front (OV5670/INT3479) and rear (OV8858/INT3477)
cameras on the Dell Latitude 5285 2-in-1 under Linux.

Per Documentation/process/coding-assistants.rst, every patch carries an
Assisted-by tag: this work was developed with help from an AI coding
assistant (Claude Code). I have reviewed and tested all of it on the
hardware and take responsibility for the result.

The series is interdependent (all eight patches are needed for working
cameras) and touches three subsystems: mfd (patch 1), platform/x86 int3472
(patches 2-6) and media (patches 7-8). It is probably best merged as one
set - for example via platform-drivers-x86 with an immutable branch that
the media and MFD trees can pull. Lee, an Acked-by on patch 1 (mfd) would
help enable that; I'm happy to follow whichever merge approach the
maintainers prefer.

Changes since v9 (addressing Sakari Ailus's and Andy Shevchenko's review):
- Rebased onto platform-drivers-x86/for-next.
- Added Assisted-by tags to every patch per coding-assistants.rst (both
  reviewers asked).
- Split the old clock-consumer patch (v9 3/6) into two: a pure refactor
  that moves the Windows MFD-cell setup below the device-type switch
  (now 3/8), and the actual static clock-consumer support (now 4/8), as
  requested by Sakari.
- In that refactor, split the struct device *dev declaration from its
  assignment, and add a blank line separating generic and local forward
  declarations in tps68470.h, as requested by Andy.
- New patch 5/8: factor the always-on VIO regulator init_data out of the
  board-data patch into a shared common_tps68470_vio_reg_init_data, and
  fold in the byte-identical intel_nvl copy, as requested by Sakari.
- Patch 1 keeps Andy's Reviewed-by (subject prefix fixed to "mfd:" in v9).

Earlier changelogs are in the v7-v9 postings:
  v9: https://lore.kernel.org/all/20260827201611.99825-1-tchatard@gmail.com/
  v8: https://lore.kernel.org/all/20260826112452.13539-1-tchatard@gmail.com/
  v7: https://lore.kernel.org/all/20260819140107.1329091-1-tchatard@gmail.com/

Tested on Ubuntu 25.10 (kernel 6.17.0-22-generic) and Ubuntu 26.04 (kernel
7.0.0-30-generic): both cameras working in Zoom, Chrome, and GNOME Camera
via PipeWire. Also independently tested on the closely-related Dell Latitude
5290 2-in-1 (same IPU3/TPS68470/OV5670/OV8858/DW9714 stack) by Vitalii
Tytskyi:
  https://github.com/vitovt/dell-5290-camera-kernel/tree/master/patches

Thierry Chatard (8):
  mfd: intel-lpss: add resource conflict quirk for Dell Latitude 5285
  platform/x86: int3472: tps68470: use unsigned int for GPIO lookup loop
    counters
  platform/x86: int3472: tps68470: move Windows MFD setup below the
    device-type switch
  platform/x86: int3472: tps68470: add static clock consumer support
  platform/x86: int3472: tps68470: use a common always-on VIO regulator
    init_data
  platform/x86: int3472: tps68470: add board data for Dell Latitude 5285
  media: ipu-bridge: add sensor configuration for OV8858 (INT3477)
  media: ov8858: add ACPI device ID INT3477

 drivers/media/i2c/ov8858.c                    |   7 +
 drivers/media/pci/intel/ipu-bridge.c          |   2 +
 drivers/mfd/intel-lpss-acpi.c                 |  32 ++++
 drivers/platform/x86/intel/int3472/tps68470.c | 116 ++++++-----
 drivers/platform/x86/intel/int3472/tps68470.h |   8 +
 .../x86/intel/int3472/tps68470_board_data.c   | 181 ++++++++++++++++--
 6 files changed, 283 insertions(+), 63 deletions(-)


base-commit: cee9395acd8043be0644b25c34bfa86623f2b935
-- 
2.53.0