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    drm/sun4i: abstract a engine type · 87969338
    Icenowy Zheng 提交于
    As we are going to add support for the Allwinner DE2 engine in sun4i-drm
    driver, we will finally have two types of display engines -- the DE1
    backend and the DE2 mixer. They both do some display blending and feed
    graphics data to TCON, and is part of the "Display Engine" called by
    Allwinner, so I choose to call them both "engine" here.
    
    Abstract the engine type to a new struct with an ops struct, which contains
    functions that should be called outside the engine-specified code (in
    TCON, CRTC or TV Encoder code).
    
    In order to preserve bisectability, we also switch the backend and layer
    code in its own module.
    Signed-off-by: NIcenowy Zheng <icenowy@aosc.io>
    Reviewed-by: NChen-Yu Tsai <wens@csie.org>
    Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
    87969338
sun4i_tv.c 18.4 KB