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
--
2.7.4
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