[0/2] drm/bridge: analogix_dp: Self-refresh state machine fixes

Message

Brian Norris Feb. 15, 2022, 11:54 p.m. UTC

Hi,

I've been investigating several eDP issues on a Rockchip RK3399 system
and have two proposed bugfixes. RK3399 has two CRTCs, either of which
can be used for eDP output. For both fixes, we have bugs due to the
relationship between the generalized "self refresh helpers" and the
analogix-dp bridge driver which controls much of the PSR mechanics.
These bugs are most visible when switching between CRTCs.

I'm not a DRM expert, but I've been poking at a lot of Rockchip display
drivers recently. I'd love some skeptical eyes, so feel free to ask
questions if I haven't explained issues well, or the proposals look
fishy.

Regards,
Brian


Brian Norris (2):
  drm/bridge: analogix_dp: Support PSR-exit to disable transition
  drm/atomic: Force bridge self-refresh-exit on CRTC switch

 .../drm/bridge/analogix/analogix_dp_core.c    | 42 +++++++++++++++++--
 drivers/gpu/drm/drm_atomic_helper.c           | 16 +++++--
 2 files changed, 51 insertions(+), 7 deletions(-)