This series exposes the pipe CRCs on ivybridge through debugfs. It's based on the initial work from Shuang He, with some improvements to have a nice user space API. There are several points in the display pipeline where CRCs can be computed on the bits flowing there. For instance, it's usually possible to compute the CRCs of the primary plane, the sprite plane or the CRCs of the bits after the panel fitter (collectively called pipe CRCs). An intel-gpu-tools series will follow with helpers to use the feature from tests and basic testing. Further work items: * make it work on other platforms * expose other CRCs than just the pipe CRCs (transcoders, ddi, ...) * implement poll() for the result files -- Damien drivers/gpu/drm/i915/i915_debugfs.c | 503 ++++++++++++++++++++++++++-- drivers/gpu/drm/i915/i915_dma.c | 2 + drivers/gpu/drm/i915/i915_drv.h | 31 ++ drivers/gpu/drm/i915/i915_irq.c | 49 +++ drivers/gpu/drm/i915/i915_reg.h | 36 +- 5 files changed, 594 insertions(+), 27 deletions(-) _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
