linux.git/drivers/gpu/drm/sun4i, branch v5.0-rc2

drm/sun4i: Add compatible for H6 display engine

2018-12-04T07:46:28+00:00

H6 is first Allwinner SoC which supports 10 bit colors, HDR and AFBC.

Signed-off-by: Jernej Skrabec 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20181104182705.18047-9-jernej.skrabec@siol.net

drm/sun4i: Pass modifier to backend and frontend format support helpers

2018-11-27T09:12:56+00:00

To prepare the introduction of tiled mode support, pass the framebuffer
format modifier to the helpers dealing with format support.

Since only linear mode is supported for now, add corresponding checks in
each helper.

Signed-off-by: Paul Kocialkowski 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20181123092515.2511-33-paul.kocialkowski@bootlin.com

drm/sun4i: frontend: Add support for the BGRX8888 output format

2018-11-27T09:04:11+00:00

This introduces support for the BGRX8888 output format for the frontend,
with its associated output format value definition.

Signed-off-by: Paul Kocialkowski 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20181123092515.2511-23-paul.kocialkowski@bootlin.com

drm/sun4i: Make pitch even for GEM dumb alloc as per hardware constraint

2018-11-27T09:01:49+00:00

Our hardware requires the pitch to be an even number when using YUV
formats with the frontend. Implement a driver-specific callback for GEM
dumb allocation that sets the pitch accordingly.

Since only the bpp is passed (and not the format), we cannot really
distinguish if this alignment is really required. Since it doesn't hurt
to align the pitch anyway, always do it.

Signed-off-by: Paul Kocialkowski 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20181123092515.2511-30-paul.kocialkowski@bootlin.com

drm/sun4i: frontend: Apply format sub-sampling to CH1 dimensions

2018-11-27T08:58:22+00:00

The frontend comes with two "channels", that can be configured
independently. When used in YUV mode, the first channel (CH0) represents
the luminance component while the second channel (CH1) represents the
chrominance. In RGB mode, both have to be configured the same way.

Use variables (with the YUV terminology) for each channel's
dimensions, calculating the chroma dimensions from the luma dimensions
and the sub-sampling factors from the format description.

Since the configured size only has pixel precision, the fractional
fixed-point part of the source size is dropped for both components to
ensure that the scaling factors are accurate.

Signed-off-by: Paul Kocialkowski 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20181123092515.2511-26-paul.kocialkowski@bootlin.com

drm/sun4i: backend: Detail the YUV to RGB values coding explanation

2018-11-27T08:57:21+00:00

The values in the BT601 YUV to RGB colorspace translation are not
simply coded as multiples, but rather as fixed-point signed fractional
values on a given number of bits. Add an explanation about that.

Signed-off-by: Paul Kocialkowski 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20181123092515.2511-24-paul.kocialkowski@bootlin.com

drm/sun4i: frontend: Add support for the BGRX8888 input format

2018-11-27T08:56:53+00:00

This introduces support for the BGRX8888 input format for the frontend,
with its associated pixel sequence value definition. Other fields are
already configured correctly as they no longer depend on the format's
fourcc directly.

Signed-off-by: Paul Kocialkowski 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20181123092515.2511-22-paul.kocialkowski@bootlin.com

drm/sun4i: frontend: Determine input mode based on the number of planes

2018-11-27T08:55:16+00:00

Use the number of planes associated with the DRM format to determine the
input mode configuration instead of the format iteself. This way, the
helper can be used for all packed formats without future changes.

Signed-off-by: Paul Kocialkowski 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20181123092515.2511-20-paul.kocialkowski@bootlin.com

drm/sun4i: frontend: Add proper definitions for format registers

2018-11-27T08:54:13+00:00

This introduces proper definitions for the input and output format
configuration registers instead of a macro and raw values in the code,
with the intent to increase code readability and reduce indirections.

Signed-off-by: Paul Kocialkowski 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20181123092515.2511-19-paul.kocialkowski@bootlin.com

drm/sun4i: frontend: Add helpers for input data mode and pixel sequence

2018-11-27T08:53:34+00:00

This introduces new helpers for retrieving the input data mode and pixel
sequence register field values based on the DRM format instead of
hardcoding these. This makes it easier to add support for more formats.

Signed-off-by: Paul Kocialkowski 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20181123092515.2511-18-paul.kocialkowski@bootlin.com