Hello,
This is the second version of this series adding writeback support to the VC4 display engine.
This version is based on drm-misc-next and include a bunch of modifications to core that I had to add to make it work on VC4.
Feel free to comment on those modifications.
On the driver side, no much has changed except I modified a bit the implementation to adjust the latest revision of the writeback interface.
Regards,
Boris
Boris Brezillon (8): drm/atomic: Avoid connector to writeback_connector casts drm/connector: Pass a drm_connector_state to ->atomic_commit() drm/vc4: Use wait_for_flip_done() instead of wait_for_vblanks() drm/crtc: Add a generic infrastructure to fake VBLANK events drm/atomic: Call drm_atomic_helper_fake_vblank() from the generic commit_tail() helpers drm/vc4: Call drm_atomic_helper_fake_vblank() in the commit path drm/vc4: Add support for the transposer block ARM: dts: bcm283x: Add Transposer block
.../devicetree/bindings/display/brcm,bcm-vc4.txt | 6 + arch/arm/boot/dts/bcm283x.dtsi | 6 + drivers/gpu/drm/drm_atomic.c | 4 +- drivers/gpu/drm/drm_atomic_helper.c | 46 +- drivers/gpu/drm/vc4/Makefile | 1 + drivers/gpu/drm/vc4/vc4_crtc.c | 139 +++++- drivers/gpu/drm/vc4/vc4_debugfs.c | 1 + drivers/gpu/drm/vc4/vc4_drv.c | 1 + drivers/gpu/drm/vc4/vc4_drv.h | 7 + drivers/gpu/drm/vc4/vc4_kms.c | 11 +- drivers/gpu/drm/vc4/vc4_regs.h | 1 + drivers/gpu/drm/vc4/vc4_txp.c | 487 +++++++++++++++++++++ include/drm/drm_atomic_helper.h | 1 + include/drm/drm_crtc.h | 15 + include/drm/drm_modeset_helper_vtables.h | 4 +- include/drm/drm_writeback.h | 6 + 16 files changed, 700 insertions(+), 36 deletions(-) create mode 100644 drivers/gpu/drm/vc4/vc4_txp.c