We need to block DC6 entry in case of Panel Replay as enabling VBI doesn't
prevent DC6 in case of Panel Replay. This causes problems if user-space is
polling for vblank events.
v4:
- do flush_work for vblank_work on intel_crtc_vblank_off
- no need to use READ_ONCE in bdw_enable_vblank
- check crtc->block_dc_for_vblank in bdw_disable_vblank as well
- move adding block_dc_for_vblank into patch 2.
- patch 1. scope changed
v3: check that encoder is dp
v2: set/clear block_dc6_needed in intel_crtc_vblank_on/off
Jouni Högander (2):
drm/i915/psr: Add intel_psr_needs_block_dc_vblank for blocking dc
entry
drm/i915/display: Prevent DC6 while vblank is enabled for Panel Replay
drivers/gpu/drm/i915/display/intel_crtc.c | 7 +++++
.../gpu/drm/i915/display/intel_display_core.h | 2 ++
.../gpu/drm/i915/display/intel_display_irq.c | 27 ++++++++++++++++
.../drm/i915/display/intel_display_types.h | 2 ++
drivers/gpu/drm/i915/display/intel_psr.c | 31 +++++++++++++++++++
drivers/gpu/drm/i915/display/intel_psr.h | 1 +
6 files changed, 70 insertions(+)
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2.34.1
