[PATCH 00/11] drm/sun4i: add CEC support

[Maxime Ripard]

On Tue, Jul 11, 2017 at 08:30:33AM +0200, Hans Verkuil wrote:
> From: Hans Verkuil <hans.verkuil at cisco.com>
> 
> This patch series adds CEC support for the sun4i HDMI controller.
> 
> The CEC hardware support for the A10 is very low-level as it just
> controls the CEC pin. Since I also wanted to support GPIO-based CEC
> hardware most of this patch series is in the CEC framework to
> add a generic low-level CEC pin framework. It is only the final patch
> that adds the sun4i support.
> 
> This patch series first makes some small changes in the CEC framework
> (patches 1-4) to prepare for this CEC pin support.
> 
> Patch 5-7 adds the new API elements and documents it. Patch 6 reworks
> the CEC core event handling.
> 
> Patch 8 adds pin monitoring support (allows userspace to see all
> CEC pin transitions as they happen).
> 
> Patch 9 adds the core cec-pin implementation that translates low-level
> pin transitions into valid CEC messages. Basically this does what any
> SoC with a proper CEC hardware implementation does.
> 
> Patch 10 documents the cec-pin kAPI (and also the cec-notifier kAPI
> which was missing).
> 
> Finally patch 11 adds the actual sun4i_hdmi CEC implementation.
> 
> I tested this on my cubieboard. There were no errors at all
> after 126264 calls of 'cec-ctl --give-device-vendor-id' while at the
> same time running a 'make -j4' of the v4l-utils git repository and
> doing a continuous scp to create network traffic.
> 
> This patch series is based on top of the mainline kernel as of
> yesterday (so with all the sun4i and cec patches for 4.13 merged).

For the whole serie:
Reviewed-by: Maxime Ripard <maxime.ripard at free-electrons.com>

> Maxime, patches 1-10 will go through the media subsystem. How do you
> want to handle the final patch? It can either go through the media
> subsystem as well, or you can sit on it and handle this yourself during
> the 4.14 merge window. Another option is to separate the Kconfig change
> into its own patch. That way you can merge the code changes and only
> have to handle the Kconfig patch as a final change during the merge
> window.

We'll probably have a number of reworks for 4.14, so it would be
better if I merged it.

However, I guess if we just switch to a depends on CEC_PIN instead of
a select, everything would just work even if we merge your patches in
a separate tree, right?

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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