diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_fifo_underrun.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_fifo_underrun.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_fifo_underrun.c b/drivers/gpu/drm/i915/display/intel_fifo_underrun.c index d636d21fa9ce..b708a62e509a 100644 --- a/drivers/gpu/drm/i915/display/intel_fifo_underrun.c +++ b/drivers/gpu/drm/i915/display/intel_fifo_underrun.c @@ -31,6 +31,7 @@ #include "intel_display_types.h" #include "intel_fbc.h" #include "intel_fifo_underrun.h" +#include "intel_pch_display.h" /** * DOC: fifo underrun handling @@ -509,3 +510,22 @@ void intel_check_pch_fifo_underruns(struct drm_i915_private *dev_priv) spin_unlock_irq(&dev_priv->irq_lock); } + +void intel_init_fifo_underrun_reporting(struct drm_i915_private *i915, + struct intel_crtc *crtc, + bool enable) +{ + crtc->cpu_fifo_underrun_disabled = !enable; + + /* + * We track the PCH trancoder underrun reporting state + * within the crtc. With crtc for pipe A housing the underrun + * reporting state for PCH transcoder A, crtc for pipe B housing + * it for PCH transcoder B, etc. LPT-H has only PCH transcoder A, + * and marking underrun reporting as disabled for the non-existing + * PCH transcoders B and C would prevent enabling the south + * error interrupt (see cpt_can_enable_serr_int()). + */ + if (intel_has_pch_trancoder(i915, crtc->pipe)) + crtc->pch_fifo_underrun_disabled = !enable; +} |