kernel/linux.git/drivers/gpu/drm/arm, branch v4.17.5

drm: mali-dp: Add YUV->RGB conversion support for video layers

2018-03-14T11:41:01+00:00

Internally Mali DP uses an RGB pipeline so video layers that support YUV input buffers need to convert the input data to RGB. The YUV buffers can have various encodings and this patch introduces support for BT.601, BT.709 and BT.2020 encodings, both limited and full ranges. This patch adds support for specifying the color encoding of the input buffers for the planes that are backed by the video layers and programs the YUV2RGB coefficients into hardware based on the selected encoding. Signed-off-by: Mihail Atanassov [updated to use standard properties] Signed-off-by: Liviu Dudau

drm: mali-dp: Turn off CRTC vblank when removing module.

2018-03-14T11:38:03+00:00

When unbinding the mali-dp driver the drm_vblank_cleanup() function warns us that the vblanks are still enabled. Fix that by calling drm_crtc_vblank_off() in the malidp_unbind() function. Signed-off-by: Liviu Dudau

drm: arm: malidp: Use drm_atomic_helper_shutdown() to disable planes on removal

2018-03-14T11:38:03+00:00

The plane cleanup handler currently calls drm_plane_helper_disable(), which is a legacy helper function. Replace it with a call to drm_atomic_helper_shutdown() at removal time. Signed-off-by: Laurent Pinchart Signed-off-by: Liviu Dudau

drm: arm: malidp: Don't destroy planes manually in error handlers

2018-03-14T11:38:02+00:00

The top-level error handler calls drm_mode_config_cleanup() which will destroy all planes. There's no need to destroy them manually in lower error handlers. As plane cleanup is now handled entirely by drm_mode_config_cleanup(), we must ensure that the plane .destroy() handler frees allocated memory for the plane object that was freed by malidp_de_planes_destroy(). Do so by replacing the call to devm_kfree() in the .destroy() handler by kfree(). devm_kfree() is currently a no-op as the plane memory is allocated with kzalloc(), not devm_kzalloc(). Signed-off-by: Laurent Pinchart Signed-off-by: Liviu Dudau

drm/mali-dp: Fix malidp_atomic_commit_hw_done() for event sending.

2018-03-14T11:38:02+00:00

Mali DP hardware has a 'go' bit (config_valid) for making the new scene parameters active at the next page flip. The problem with the current code is that the driver first sets this bit and then proceeds to wait for confirmation from the hardware that the configuration has been updated before arming the vblank event. As config_valid is actually asserted by the hardware after the vblank event, during the prefetch phase, when we get to arming the vblank event we are going to send it at the next vblank, in effect halving the vblank rate from the userspace perspective. Fix it by sending the userspace event from the IRQ handler, when we handle the config_valid interrupt, which syncs with the time when the hardware is active with the new parameters. Reported-by: Alexandru-Cosmin Gheorghe Signed-off-by: Liviu Dudau

drm/arm/malidp: Disable pixel alpha blending for colors that do not have alpha

2018-03-14T11:38:02+00:00

Mali dp needs to disable pixel alpha blending (use layer alpha blending) to display color formats that do not contain alpha bits per pixel This patch depends on: "[PATCH v2 01/19] drm/fourcc: Add a alpha field to drm_format_info" Signed-off-by: Ayan Kumar Halder Signed-off-by: Liviu Dudau

drm: mali-dp: Fix bug on scaling with rotation

2018-03-14T11:38:02+00:00

In the case, when the user wants to scale and rotate a layer by 90/270 degrees, the scaling engine input dimensions' parameters ie width and height needs to be swapped with respect to the layer's input dimensions. This means scaling engine input height should be set to layer's input width and scaling engine input width should be set to layer's input height. Signed-off-by: Ayan Halder Signed-off-by: Liviu Dudau

drm/mali-dp: Don't enable scaling engine for planes that only rotate.

2018-03-14T11:38:02+00:00

Currently the scaling engine gets enabled for a plane where the input size differs from the composition size. As rotation is done natively by the plane's hardware layer, we don't need the scaling engine to be enabled. Signed-off-by: Liviu Dudau

drm: mali-dp: Uninitialized variable in malidp_se_check_scaling()

2018-03-14T11:38:02+00:00

We use "mc" without initializing it if scaling is not necessary. Fixes: 28ce675b7474 ("drm: mali-dp: Add plane upscaling support") Signed-off-by: Dan Carpenter Reviewed-by: Mihail Atanassov Signed-off-by: Liviu Dudau

drm/mali-dp: Align pitch size to be multiple of bus burst read size.

2018-03-14T11:38:02+00:00

Mali DP hardware needs pitch line sizes aligned to the bus burst size for reads, so take that into consideration when allocating dumb buffers. If the layer is rotated then the stride size requirement is even larger for some hardware versions, so allocate for the worst case scenario. Update the ->dumb_create() hook to a driver specific function that sets the correct pitch size. Reported-by: Ayan Halder Signed-off-by: Liviu Dudau