[v3,0/3] media: i2c: Introduce driver for the TW9900 decoder

Hello everyone,

This is the third version of the series adding support for the Techwell
TW9900 multi standard decoder. It's a pretty simple decoder compared to
the TW9910, since it doesn't have a built-in scaler/crop engine.

This V3 addresses coding-style issues reported by Paul, and fixes the
example binding.

Any feedback is appreciated,

Thanks,

Maxime

Maxime Chevallier (3):
  dt-bindings: vendor-prefixes: Add techwell vendor prefix
  media: dt-bindings: media: i2c: Add bindings for TW9900
  media: i2c: Introduce a driver for the Techwell TW9900 decoder

 .../devicetree/bindings/media/i2c/tw9900.yaml |  60 ++
 .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
 MAINTAINERS                                   |   6 +
 drivers/media/i2c/Kconfig                     |  11 +
 drivers/media/i2c/Makefile                    |   1 +
 drivers/media/i2c/tw9900.c                    | 617 ++++++++++++++++++
 6 files changed, 697 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/tw9900.yaml
 create mode 100644 drivers/media/i2c/tw9900.c

On Tue, 22 Dec 2020 17:04:06 +0100, Maxime Chevallier wrote:
> The Techwell TW9900 is a video decoder supporting multiple input
> standards, such as PAL, NTSC and SECAM, and outputs a BT.656 video
> signal.
> 
> It's designed to be low-power, posesses some features such as a
> programmable comb-filter, and automatic input standard detection.
> 
> Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
> ---
> V2->V3 : Fix the example not compiling due to a typo in the reset-gpios
> node.
> 
>  .../devicetree/bindings/media/i2c/tw9900.yaml | 60 +++++++++++++++++++
>  1 file changed, 60 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/i2c/tw9900.yaml
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/media/i2c/tw9900.example.dt.yaml: tw9900@44: 'reset-gpios' does not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/media/i2c/tw9900.yaml

See https://patchwork.ozlabs.org/patch/1419441

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.