diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_irq.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index c9540dca5d2..b2c5c2b04f5 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -419,6 +419,16 @@ done: return ret; } +static bool __cpu_fifo_underrun_reporting_enabled(struct drm_device *dev, + enum pipe pipe) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; + struct intel_crtc *intel_crtc = to_intel_crtc(crtc); + + return !intel_crtc->cpu_fifo_underrun_disabled; +} + /** * intel_set_pch_fifo_underrun_reporting - enable/disable FIFO underrun messages * @dev: drm device @@ -488,6 +498,8 @@ __i915_enable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe, if ((pipestat & enable_mask) == enable_mask) return; + dev_priv->pipestat_irq_mask[pipe] |= status_mask; + /* Enable the interrupt, clear any pending status */ pipestat |= enable_mask | status_mask; I915_WRITE(reg, pipestat); @@ -510,6 +522,8 @@ __i915_disable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe, if ((pipestat & enable_mask) == 0) return; + dev_priv->pipestat_irq_mask[pipe] &= ~status_mask; + pipestat &= ~enable_mask; I915_WRITE(reg, pipestat); POSTING_READ(reg); @@ -1540,18 +1554,33 @@ static void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir) static void valleyview_pipestat_irq_handler(struct drm_device *dev, u32 iir) { struct drm_i915_private *dev_priv = dev->dev_private; - u32 pipe_stats[I915_MAX_PIPES]; + u32 pipe_stats[I915_MAX_PIPES] = { }; int pipe; spin_lock(&dev_priv->irq_lock); for_each_pipe(pipe) { - int reg = PIPESTAT(pipe); + int reg; + u32 mask; + + if (!dev_priv->pipestat_irq_mask[pipe] && + !__cpu_fifo_underrun_reporting_enabled(dev, pipe)) + continue; + + reg = PIPESTAT(pipe); pipe_stats[pipe] = I915_READ(reg); /* * Clear the PIPE*STAT regs before the IIR */ - if (pipe_stats[pipe] & 0x8000ffff) + mask = PIPESTAT_INT_ENABLE_MASK; + if (__cpu_fifo_underrun_reporting_enabled(dev, pipe)) + mask |= PIPE_FIFO_UNDERRUN_STATUS; + if (iir & I915_DISPLAY_PIPE_EVENT_INTERRUPT(pipe)) + mask |= dev_priv->pipestat_irq_mask[pipe]; + pipe_stats[pipe] &= mask; + + if (pipe_stats[pipe] & (PIPE_FIFO_UNDERRUN_STATUS | + PIPESTAT_INT_STATUS_MASK)) I915_WRITE(reg, pipe_stats[pipe]); } spin_unlock(&dev_priv->irq_lock); |