diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 16 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_drv.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_runtime_pm.c | 19 |
3 files changed, 37 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index d56c261ad867..a9048e1b96e5 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -3366,6 +3366,22 @@ void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv, spin_unlock_irq(&dev_priv->irq_lock); } +void gen8_irq_power_well_pre_disable(struct drm_i915_private *dev_priv, + unsigned int pipe_mask) +{ + spin_lock_irq(&dev_priv->irq_lock); + if (pipe_mask & 1 << PIPE_A) + GEN8_IRQ_RESET_NDX(DE_PIPE, PIPE_A); + if (pipe_mask & 1 << PIPE_B) + GEN8_IRQ_RESET_NDX(DE_PIPE, PIPE_B); + if (pipe_mask & 1 << PIPE_C) + GEN8_IRQ_RESET_NDX(DE_PIPE, PIPE_C); + spin_unlock_irq(&dev_priv->irq_lock); + + /* make sure we're done processing display irqs */ + synchronize_irq(dev_priv->dev->irq); +} + static void cherryview_irq_preinstall(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index c208ca630e99..4852049c9ab3 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -993,6 +993,8 @@ static inline bool intel_irqs_enabled(struct drm_i915_private *dev_priv) int intel_get_crtc_scanline(struct intel_crtc *crtc); void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv, unsigned int pipe_mask); +void gen8_irq_power_well_pre_disable(struct drm_i915_private *dev_priv, + unsigned int pipe_mask); /* intel_crt.c */ void intel_crt_init(struct drm_device *dev); diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index ec4faae49b3f..e2329768902c 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -284,6 +284,13 @@ static void hsw_power_well_post_enable(struct drm_i915_private *dev_priv) 1 << PIPE_C | 1 << PIPE_B); } +static void hsw_power_well_pre_disable(struct drm_i915_private *dev_priv) +{ + if (IS_BROADWELL(dev_priv)) + gen8_irq_power_well_pre_disable(dev_priv, + 1 << PIPE_C | 1 << PIPE_B); +} + static void skl_power_well_post_enable(struct drm_i915_private *dev_priv, struct i915_power_well *power_well) { @@ -309,6 +316,14 @@ static void skl_power_well_post_enable(struct drm_i915_private *dev_priv, } } +static void skl_power_well_pre_disable(struct drm_i915_private *dev_priv, + struct i915_power_well *power_well) +{ + if (power_well->data == SKL_DISP_PW_2) + gen8_irq_power_well_pre_disable(dev_priv, + 1 << PIPE_C | 1 << PIPE_B); +} + static void hsw_set_power_well(struct drm_i915_private *dev_priv, struct i915_power_well *power_well, bool enable) { @@ -334,6 +349,7 @@ static void hsw_set_power_well(struct drm_i915_private *dev_priv, } else { if (enable_requested) { + hsw_power_well_pre_disable(dev_priv); I915_WRITE(HSW_PWR_WELL_DRIVER, 0); POSTING_READ(HSW_PWR_WELL_DRIVER); DRM_DEBUG_KMS("Requesting to disable the power well\n"); @@ -709,6 +725,9 @@ static void skl_set_power_well(struct drm_i915_private *dev_priv, state_mask = SKL_POWER_WELL_STATE(power_well->data); is_enabled = tmp & state_mask; + if (!enable && enable_requested) + skl_power_well_pre_disable(dev_priv, power_well); + if (enable) { if (!enable_requested) { WARN((tmp & state_mask) && |
