[PATCH v2 04/12] drm/sun4i: engine: Add a custom crtc atomic_check

[Chen-Yu Tsai]

On Mon, Dec 18, 2017 at 10:57 PM, Maxime Ripard
<maxime.ripard at free-electrons.com> wrote:
> We have some restrictions on what the planes and CRTC can provide that are
> tied to only one generation of display engines.
>
> For example, on the first generation, we can only have one YUV plane or one
> plane that uses the frontend output.
>
> Let's allow our engines to provide an atomic_check callback to validate the
> current configuration.
>
> Reviewed-by: Neil Armstrong <narmstrong at baylibre.com>
> Signed-off-by: Maxime Ripard <maxime.ripard at free-electrons.com>

Reviewed-by: Chen-Yu Tsai <wens at csie.org>