[PATCH 3/3] drm/exynos: mixer: add 2x scaling to mixer_graph_buffer

[Gustavo Padovan]

Hi Tobias,

2015-04-01 Tobias Jakobi <tjakobi at math.uni-bielefeld.de>:

> While the VP (video processor) supports arbitrary scaling
> of its input, the mixer just supports a simple 2x (line
> doubling) scaling. Expose this functionality and exit
> early when an unsupported scaling configuration is
> encountered.
> 
> This was tested with modetest's DRM plane test (from
> the libdrm test suite) on an Odroid-X2 (Exynos4412).
> 
> Signed-off-by: Tobias Jakobi <tjakobi at math.uni-bielefeld.de>
> ---
>  drivers/gpu/drm/exynos/exynos_mixer.c | 35 +++++++++++++++++++++++++++++------
>  1 file changed, 29 insertions(+), 6 deletions(-)

Reviewed-by: Gustavo Padovan <gustavo.padovan at collabora.co.uk>

	Gustavo