Hi,
This is v6 of the writeback connector series. Based on renewed interest in the feature and recent efforts from Rob Clark I'm refreshing the series to address some comments and feedback.
Main changes are to incorporate Rob Clark's atomic_commit() vfunc for the connector helper funcs, change the signature of the create_writeback_properties() function to return the error code rather than a boolean false and making sure that the writeback job doesn't get freed in the cleanup_work() function but when the connector state gets discarded.
Additionally, based on Sean Paul's comments, I'm providing the 3rd patch in the series that adds a client cap for exposing the writeback connectors to userspace. The idea was initially considered unnecessary by Daniel Vetter here [1] but Sean thinks it is useful. Note that the patch depends on the cleanup patch [2] sent earlier.
Comments are welcome on the suitability of this series.
Best regards, Liviu
[1] https://lists.freedesktop.org/archives/dri-devel/2016-October/120519.html [2] https://lists.freedesktop.org/archives/dri-devel/2018-February/167677.html
Brian Starkey (2): drm: Add writeback connector type drm: writeback: Add out-fences for writeback connectors
Liviu Dudau (1): drm: writeback: Add client capability for exposing writeback connectors
Documentation/gpu/drm-kms.rst | 9 + drivers/gpu/drm/Makefile | 2 +- drivers/gpu/drm/drm_atomic.c | 227 ++++++++++++++++++- drivers/gpu/drm/drm_atomic_helper.c | 30 +++ drivers/gpu/drm/drm_connector.c | 4 +- drivers/gpu/drm/drm_ioctl.c | 5 + drivers/gpu/drm/drm_mode_config.c | 5 + drivers/gpu/drm/drm_writeback.c | 360 +++++++++++++++++++++++++++++++ include/drm/drm_atomic.h | 11 + include/drm/drm_connector.h | 13 ++ include/drm/drm_file.h | 7 + include/drm/drm_mode_config.h | 23 ++ include/drm/drm_modeset_helper_vtables.h | 11 + include/drm/drm_writeback.h | 129 +++++++++++ include/uapi/drm/drm.h | 9 + include/uapi/drm/drm_mode.h | 1 + 16 files changed, 835 insertions(+), 11 deletions(-) create mode 100644 drivers/gpu/drm/drm_writeback.c create mode 100644 include/drm/drm_writeback.h