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6 Commits

Author SHA1 Message Date
Jernej Skrabec
bc29489f71 drm/sun4i: Fix uninitialized variables in vi layer 
min_scale and max_scale in sun8i_vi_layer_atomic_check() can be used
without initialization.

Fix that.

Fixes: b862a648de ("drm/sun4i: Add support for HW scaling to DE2")
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171206152603.25937-1-jernej.skrabec@siol.net
 2017-12-07 09:51:41 +01:00
Jernej Skrabec
e1ef900666 drm/sun4i: Wire in DE2 YUV support 
Now that we have all required bits, add support for YUV formats.

DRM subsystem doesn't know YUV411 semi-planar format, so leave that out
for now.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171201060550.10392-27-jernej.skrabec@siol.net
 2017-12-05 13:22:44 +01:00
Jernej Skrabec
1343bd6c23 drm/sun4i: Expand DE2 scaler lib with YUV support 
Basic principle of operation when using YUV framebuffer is that chroma
planes have to be upscaled to same size as luma.

Because of that, expand DE2 scaler library to support that.

BSP driver uses another set of FIR filter coefficients for YUV planes.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171201060550.10392-26-jernej.skrabec@siol.net
 2017-12-05 13:22:44 +01:00
Jernej Skrabec
60a3dcf96a drm/sun4i: Add DE2 definitions for YUV formats 
This commit expands translation of DRM YUV format to HW specific
information.

It doesn't do any functional changes.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171201060550.10392-25-jernej.skrabec@siol.net
 2017-12-05 13:22:44 +01:00
Jernej Skrabec
b862a648de drm/sun4i: Add support for HW scaling to DE2 
Scaling is currently supported only for RGB framebuffers

Coefficients and algorithm which coefficients to select are taken
from BSP driver.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171201060550.10392-22-jernej.skrabec@siol.net
 2017-12-05 13:22:44 +01:00
Jernej Skrabec
7480ba4d75 drm/sun4i: Add support for DE2 VI planes 
This commit adds basic support for VI planes. They are meant for video
overlay and because of that they support YUV formats too. However, using
YUV format is not straightforward, so only RGB formats are supported for
now.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171201060550.10392-20-jernej.skrabec@siol.net
 2017-12-05 13:22:43 +01:00