diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_sprite.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_sprite.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c index 27e0752d1578..375ca91b308c 100644 --- a/drivers/gpu/drm/i915/intel_sprite.c +++ b/drivers/gpu/drm/i915/intel_sprite.c @@ -65,6 +65,8 @@ int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode, 1000 * adjusted_mode->crtc_htotal); } +#define VBLANK_EVASION_TIME_US 100 + /** * intel_pipe_update_start() - start update of a set of display registers * @crtc: the crtc of which the registers are going to be updated @@ -92,7 +94,8 @@ void intel_pipe_update_start(struct intel_crtc *crtc) vblank_start = DIV_ROUND_UP(vblank_start, 2); /* FIXME needs to be calibrated sensibly */ - min = vblank_start - intel_usecs_to_scanlines(adjusted_mode, 100); + min = vblank_start - intel_usecs_to_scanlines(adjusted_mode, + VBLANK_EVASION_TIME_US); max = vblank_start - 1; local_irq_disable(); @@ -191,7 +194,12 @@ void intel_pipe_update_end(struct intel_crtc *crtc, struct intel_flip_work *work ktime_us_delta(end_vbl_time, crtc->debug.start_vbl_time), crtc->debug.min_vbl, crtc->debug.max_vbl, crtc->debug.scanline_start, scanline_end); - } + } else if (ktime_us_delta(end_vbl_time, crtc->debug.start_vbl_time) > + VBLANK_EVASION_TIME_US) + DRM_WARN("Atomic update on pipe (%c) took %lld us, max time under evasion is %u us\n", + pipe_name(pipe), + ktime_us_delta(end_vbl_time, crtc->debug.start_vbl_time), + VBLANK_EVASION_TIME_US); } static void |