The logic checks for any black screen at pipe level and upon such detection prints error. Darkscreen compares the pixels with the compare value(0x00 - black) for the detection purpose. This feature can be enables/disabled through debugfs. Nemesa Garg (2): drm/i915/display: Add support for darskscreen detection drm/i915/display: Add darkscreen debugfs entry under crtc drivers/gpu/drm/i915/Makefile | 1 + .../gpu/drm/i915/display/intel_darkscreen.c | 131 ++++++++++++++++++ .../gpu/drm/i915/display/intel_darkscreen.h | 26 ++++ .../drm/i915/display/intel_display_debugfs.c | 2 + .../drm/i915/display/intel_display_types.h | 2 + drivers/gpu/drm/i915/i915_reg.h | 8 ++ drivers/gpu/drm/xe/Makefile | 1 + 7 files changed, 171 insertions(+) create mode 100644 drivers/gpu/drm/i915/display/intel_darkscreen.c create mode 100644 drivers/gpu/drm/i915/display/intel_darkscreen.h -- 2.25.1
