Merge tag 'imx-drm-next-2017-03-17' of git://git.pengutronix.de/git/pza/linux into drm-next

imx-drm PRE/PRG support, deferred plane disabling, separate alpha support

- Initial support for the Prefetch Resolve Engine/Gasket on i.MX6QP,
  improving linear scanout buffer memory bandwidth utilization. This
  will in the future grow reordering support and allow direct scanout
  of Vivante tiled renderbuffers from the GPU.
- Deferred plane disabling gets rid of some busy waiting in the atomic
  plane disable and crtc disable paths that lead to wait_for_vblank
  timeouts.
- Add support for RGBA formats with a separate alpha plane, that can
  reduce memory bandwidth utilization for mostly transparent overlay
  planes by skipping color reads for completely transparent regions.
- Allow moving an active overlay plane without enforcing a modeset.
- Add 8-bit and 16-bit bayer formats to ipu_cpmem_set_image.
- Set the base address in ipu_cpmem_set_image even for invalid formats
  to increase robustness against errors.
- Use drm_plane_helper_check_state in plane atomic_check.
- Some cleanup.

* tag 'imx-drm-next-2017-03-17' of git://git.pengutronix.de/git/pza/linux: (22 commits)
  drm/imx: Remove unneeded definition for structure imx_drm_component
  drm/imx: use PRG/PRE when possible
  drm/imx: enable/disable PRG on CRTC enable/disable
  gpu: ipu-v3: only set non-zero AXI ID for IC when PRG is absent
  gpu: ipu-v3: hook up PRG unit
  gpu: ipu-v3: document valid IPUv3 compatibles and extend for i.MX6 QuadPlus
  gpu: ipu-v3: add driver for Prefetch Resolve Gasket
  gpu: ipu-v3: add DT binding for the Prefetch Resolve Gasket
  gpu: ipu-v3: add driver for Prefetch Resolve Engine
  gpu: ipu-v3: add DT binding for the Prefetch Resolve Engine
  drm/imx: ipuv3-plane: add support for separate alpha planes
  drm/imx: extend drm_plane_state_to_eba for separate channel support
  gpu: ipu-v3: add support for separate alpha channels
  drm: add RGB formats with separate alpha plane
  drm/imx: add deferred plane disabling
  drm/imx: don't wait for vblank and stop calling cleanup_planes in commit_tail
  gpu: ipu-v3: add unsynchronised DP channel disabling
  gpu: ipu-v3: remove IRQ dance on DC channel disable
  gpu: ipu-cpmem: add bayer formats to ipu_cpmem_set_image
  gpu: ipu-cpmem: set image base address even for incorrect formats
  ...

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