[PATCH v3 0/2] Add writeback scaling

[Ben Davis]

Add support for scaling on writeback. To do this add writeback_dest_w
and writeback_dest_h as writeback connector properties to specify the
desired output dimensions.
Then implement downscaling on writeback for Malidp-550 and Malidp-650
(upscaling on writeback is not supported on these devices).

v2: Use 0 as default for writeback_w,h and so update range to use 1 as
    minimum.

v3: Rename properties to specify they are destination width/height.
    Make sure the values from the properties are passed to
    enable_memwrite rather than the framebuffer dimensions

Ben Davis (2):
  drm: Add writeback_dest_w,h properties
  drm/malidp: Enable writeback scaling

 drivers/gpu/drm/arm/malidp_crtc.c | 49 +++++++++++---------
 drivers/gpu/drm/arm/malidp_crtc.h | 12 +++++
 drivers/gpu/drm/arm/malidp_drv.c  | 10 +++--
 drivers/gpu/drm/arm/malidp_hw.c   | 45 +++++++++++++------
 drivers/gpu/drm/arm/malidp_hw.h   | 19 ++++++--
 drivers/gpu/drm/arm/malidp_mw.c   | 94 ++++++++++++++++++++++++++++++---------
 drivers/gpu/drm/arm/malidp_regs.h |  1 +
 drivers/gpu/drm/drm_atomic_uapi.c |  8 ++++
 drivers/gpu/drm/drm_writeback.c   | 30 +++++++++++++
 include/drm/drm_connector.h       |  4 ++
 include/drm/drm_mode_config.h     | 10 +++++
 11 files changed, 220 insertions(+), 62 deletions(-)
 create mode 100644 drivers/gpu/drm/arm/malidp_crtc.h

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2.7.4