[PATCH v2 0/7] [PATCH v2 0/7] Add support of OV9655 camera

[Hugues Fruchet]

This patchset enables OV9655 camera support.

OV9655 support has been tested using STM32F4DIS-CAM extension board
plugged on connector P1 of STM32F746G-DISCO board.
Due to lack of OV9650/52 hardware support, the modified related code
could not have been checked for non-regression.

First patches upgrade current support of OV9650/52 to prepare then
introduction of OV9655 variant patch.
Because of OV9655 register set slightly different from OV9650/9652,
not all of the driver features are supported (controls). Supported
resolutions are limited to VGA, QVGA, QQVGA.
Supported format is limited to RGB565.
Controls are limited to color bar test pattern for test purpose.

OV9655 initial support is based on a driver written by H. Nikolaus Schaller [1].
OV9655 registers sequences come from STM32CubeF7 embedded software [2].

[1] http://git.goldelico.com/?p=gta04-kernel.git;a=shortlog;h=refs/heads/work/hns/video/ov9655
[2] https://developer.mbed.org/teams/ST/code/BSP_DISCO_F746NG/file/e1d9da7fe856/Drivers/BSP/Components/ov9655/ov9655.c

===========
= history =
===========
version 2:
  - Remove some unneeded semicolons (kbuild test robot):
      http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg114616.html
  - Remove patch [media] ov9650: select the nearest higher resolution:
    it is up to the application to find the best matching resolution
    using ENUM_FRAMESIZES/S_FMT/S_SELECTION (S_CROP), see
      http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg114667.html
  - dt-bindings: Fix remarks from Rob Herring about polarity:
      http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg114705.html
  - dt-bindings: Add optional regulators avdd, dvdd, dovdd:
      http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg114785.html
  - fix missing semicolons in if condition:
      http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg114611.html
  - move ov965x_pixfmt relocation in right patch:
      http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg114849.html
  - revisit OV965x renaming to ov965x for device id names and DT compatible strings,
    drop of_device_id .data device identification
      http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg114635.html
      http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg114738.html
  - Add analog power supply and clock gating, needed for GTA04 platform:
      http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg114519.html

version 1:
  - Initial submission.

H. Nikolaus Schaller (1):
  DT bindings: add bindings for ov965x camera module

Hugues Fruchet (6):
  [media] ov9650: switch i2c device id to lower case
  [media] ov9650: add device tree support
  [media] ov9650: use write_array() for resolution sequences
  [media] ov9650: add multiple variant support
  [media] ov9650: add support of OV9655 variant
  [media] ov9650: add analog power supply and clock gating

 .../devicetree/bindings/media/i2c/ov965x.txt       |  45 ++
 drivers/media/i2c/Kconfig                          |   6 +-
 drivers/media/i2c/ov9650.c                         | 816 +++++++++++++++++----
 3 files changed, 736 insertions(+), 131 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/ov965x.txt

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1.9.1