kernel/linux.git/drivers/gpu/drm/arm, branch v4.12.9

Merge branch 'for-upstream/hdlcd' of git://linux-arm.org/linux-ld into drm-fixes

2017-05-19T20:00:49+00:00

single hdlcd fix * 'for-upstream/hdlcd' of git://linux-arm.org/linux-ld: drm: hdlcd: Fix the calculation of the scanout start address

drm: mali-dp: use div_u64 for expensive 64-bit divisions

2017-04-26T16:54:58+00:00

On 32-bit machines, we can't divide 64-bit integers: drivers/gpu/drm/arm/malidp_crtc.o: In function `malidp_crtc_atomic_check': malidp_crtc.c:(.text.malidp_crtc_atomic_check+0x3c0): undefined reference to `__aeabi_uldivmod' malidp_crtc.c:(.text.malidp_crtc_atomic_check+0x3dc): undefined reference to `__aeabi_uldivmod' This calls the div_u64 function explicitly instead. Fixes: 4cea4e9f6690 ("drm: mali-dp: Add plane upscaling support") Signed-off-by: Arnd Bergmann

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

2017-04-24T12:28:09+00:00

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

2017-04-24T12:28:08+00:00

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

2017-04-24T12:28:08+00:00

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 core_id file to the sysfs interface

2017-04-24T09:45:34+00:00

Add a core_id file in the driver's sysfs directory, exposing the hardware CORE ID. This is useful to allow userspace to discover the hardware version used. Signed-off-by: Mihail Atanassov Signed-off-by: Liviu Dudau

drm: mali-dp: Add CTM support

2017-04-24T09:45:34+00:00

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

2017-04-24T09:45:34+00:00

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: add malidp_crtc_state struct

2017-04-24T09:45:34+00:00

Add a custom CRTC state struct to enable storing driver's private state. This patch only adds the base drm_crtc_state struct and the atomic functions that handle it. Signed-off-by: Mihail Atanassov Signed-off-by: Liviu Dudau

drm: mali-dp: add custom reset hook for planes

2017-04-24T09:45:34+00:00

Now that we are using a custom plane state in mali-dp, we need a bespoke reset that takes into account the larger structure. Signed-off-by: Mihail Atanassov [Updated commit message] Signed-off-by: Liviu Dudau