kernel/drivers/gpu/drm/arm/malidp_hw.h, branch linux-4.17.y

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

2018-03-14T11:41:01Z

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: Rotated planes need a larger pitch size.

2018-03-14T11:38:02Z

Rotated planes need a pitch size that is aligned to 8 bytes for older DP500 and DP550 and at least 64 bytes for DP650. Replace the malidp_hw_pitch_valid() function with one that calculates the correct pitch alignment to take into account rotation. Signed-off-by: Liviu Dudau

drm: mali-dp: Separate static internal data into a read-only structure.

2017-11-24T15:42:59Z

The malidp_hw_device structure that the driver uses to handle the differences between versions of the IP contains both non-changeable data and fields that get updated at probe time. Previously we were copying the read-only part into allocated memory, but that can be completely avoided by splitting the structure into a read-only part and keeping the runtime modifiable fields into the old structure. Reviewed-by: Brian Starkey Reviewed-by: Gustavo Padovan Signed-off-by: Liviu Dudau

drm: mali-dp: Check the mclk rate and allow up/down scaling

2017-04-24T12:28:09Z

When downscaling, mclk needs to be sufficiently higher than pxlclk in order to be able to fetch the higher-resolution data and produce output pixels. When not scaling, or when upscaling, mclk can be equal to pxlclk. Since the driver doesn't control mclk, just ensure that the requirement is satisfied with the current clock rate. Signed-off-by: Mihail Atanassov Signed-off-by: Liviu Dudau

drm: mali-dp: Enable image enhancement when scaling

2017-04-24T12:28:08Z

Apply image enhacement when we are upscaling by a factor of 2 or more in either direction. Signed-off-by: Mihail Atanassov Signed-off-by: Liviu Dudau

drm: mali-dp: Add plane upscaling support

2017-04-24T12:28:08Z

Enable the scaling engine for upscaling a single plane using the polyphase scaler. No image enhancement support or downscaling yet*, and composition result scaling is not implemented. * Downscaling a plane requires mclk > pxlclk. Signed-off-by: Mihail Atanassov Signed-off-by: Liviu Dudau

drm: mali-dp: Add CTM support

2017-04-24T09:45:34Z

All DPs have a COLORADJ matrix which is applied prior to output gamma. Attach that to the CTM property. Also, ensure the input CTM's coefficients can fit in the DP registers' Q3.12 format. Signed-off-by: Mihail Atanassov Signed-off-by: Liviu Dudau

drm: mali-dp: enable gamma support

2017-04-24T09:45:34Z

Add gamma via the DRM GAMMA_LUT/GAMMA_LUT_SIZE CRTC properties. The expected LUT size is 4096 in order to produce as accurate a set of segments as possible. This version uses only the green channel's gamma curve to set the hardware curve on DP550/650. For the sake of simplicity, it uses the same table of coefficients for all 3 curves on DP500. Signed-off-by: Mihail Atanassov Signed-off-by: Liviu Dudau

drm: mali-dp: Enable power management for the device.

2017-04-24T09:45:33Z

Enable runtime and system Power Management. Clocks are now managed from malidp_crtc_{enable,disable} functions. Suspend-to-RAM tested as working on Juno. Signed-off-by: Liviu Dudau

drm: mali-dp: fix stride setting for multi-plane formats

2017-01-26T15:46:19Z

Hardware has multiple (2 or 3, depending on model) stride registers per layer; add a function that correctly takes that into account. On hardware that only has 2 stride registers, ensure that 3-plane (YUV) content has identical strides for both chroma planes. Signed-off-by: Mihail Atanassov [Removed smart layer stride setup, comment and commit message clarifications] Signed-off-by: Liviu Dudau