WIP: drm_hwcomposer: Add support for Arm Framebuffer Compression (AFBC) modifiers.

One needs to translate the Gralloc buffer flags for AFBC (eg MALI_GRALLOC_INTFMT_AFBC_BASIC) to the corresponding linux kernel drm modifiers. This gets passed to libdrm via drmModeAddFB2WithModifiers.

Signed-off-by: Ayan Kumar Halder ayan.halder@arm.com

/-- Note for reviewer I was able to get this working for Android P on Juno with Mali DP650 and Mali T860 gpu(with some additional hacks). I have not yet validated this hikey960.

I have used the following components:-

  1. Gralloc (from https://android.googlesource.com/device/linaro/hikey/+/master/gralloc960)
  • Built with MALI_MMSS=1
  1. Libdrm (from git://anongit.freedesktop.org/mesa/drm)
  • You would need drm_fourcc.h and gralloc_handle.h --/
Edited by Ayan Kumar Halder

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