PIPE_FRMTMSTMP    866 drivers/gpu/drm/i915/i915_irq.c 		scan_prev_time = I915_READ_FW(PIPE_FRMTMSTMP(crtc->pipe));
PIPE_FRMTMSTMP    874 drivers/gpu/drm/i915/i915_irq.c 		scan_post_time = I915_READ_FW(PIPE_FRMTMSTMP(crtc->pipe));