From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Here's a repost of my PSR fixes, and one straggler from Daniel.
One interesting thing I noticed is that my SKL actually hits the PSR setup
time vs. vblank length check, so after these patches that machine won't
actually use PSR. The panel does support a lower refresh rate timing as well
though which doesn't suffer from this limitation, so I hacked the code to
use that mode instead, and PSR did seem to work without problems. With the
original mode I had some screen stalls while running xonotic, which I'm
going to assume were due to the setup time exceeding the safe limit.
I also hooked up the PSR interrupts for BDW+ and pushed the patches to [1],
but I'm not including those patches here since the PSR interrupts don't
seem to gain us anything useful in practice.
[1] git://github.com/vsyrjala/linux.git psr_interrupts
Daniel Vetter (1):
drm/i915/psr: Skip aux handeshake if the vbt tells us to
Ville Syrjälä (5):
drm/dp: Add drm_dp_psr_setup_time()
drm/dp: Add drm_dp_psr_need_train_on_exit()
drm/i915: Check PSR setup time vs. vblank length
drm/i915: Ask the sink whether training is required when exiting PSR
main-link off mode
drm/i915: Move psr.link_standby setup to intel_psr_match_conditions()
drivers/gpu/drm/drm_dp_helper.c | 46 ++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_drv.h | 2 ++
drivers/gpu/drm/i915/intel_psr.c | 64 +++++++++++++++++++++++++------------
drivers/gpu/drm/i915/intel_sprite.c | 6 ++--
include/drm/drm_dp_helper.h | 3 ++
5 files changed, 97 insertions(+), 24 deletions(-)
--
2.7.4
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