[PATCH v7 0/3] drm: add explict fencing

[Gustavo Padovan]

From: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>

Hi,

This is yet another version of the DRM fences patches. Please refer
to the cover letter[1] in a previous version to check for more details.

In v7 we now have split most of the out_fences code into
prepare_crtc_signaling() and unprepare_crtc_signaling() with improved error
handling. More details on the v7 changes are embedded in each commit's
message.

Robert Foss managed to port Android's drm_hwcomposer to the new HWC2 API and
added support to fences. Current patches can be seen here:

https://git.collabora.com/cgit/user/robertfoss/drm_hwcomposer.git/log/?h=hwc2_fence_v1

He managed to run AOSP on top of padovan/fences kernel branch with full fence
support on qemu/virgl and msm db410c. That means we already have a working
open source userspace using the explicit fencing implementation.

Also i-g-t testing are available at:

https://git.collabora.com/cgit/user/padovan/intel-gpu-tools.git/log/

Please review!

Gustavo

[1] https://www.mail-archive.com/linux-kernel@xxxxxxxxxxxxxxx/msg1253822.html

---
Gustavo Padovan (3):
  drm/fence: add in-fences support
  drm/fence: add fence timeline to drm_crtc
  drm/fence: add out-fences support

 drivers/gpu/drm/Kconfig             |   1 +
 drivers/gpu/drm/drm_atomic.c        | 247 ++++++++++++++++++++++++++++++------
 drivers/gpu/drm/drm_atomic_helper.c |   3 +
 drivers/gpu/drm/drm_crtc.c          |  45 +++++++
 drivers/gpu/drm/drm_plane.c         |   1 +
 include/drm/drm_atomic.h            |   1 +
 include/drm/drm_crtc.h              |  55 ++++++++
 7 files changed, 311 insertions(+), 42 deletions(-)

-- 
2.5.5