From: Ville Syrjälä Date: Tue, 12 Apr 2016 15:56:14 +0000 (+0300) Subject: drm/i915: Fix up vlv/chv display irq setup X-Git-Tag: v4.7-rc1~77^2~37^2~122 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ad22d10654ea0e5eb46fa46ae3f716bfc1d43ce3;p=karo-tx-linux.git drm/i915: Fix up vlv/chv display irq setup The vlv/chv display irq setup was a bit of mess after I ran out of steam when working on it last. Fix it up so that we just have a _reset() and _postinstall() hooks for the display irqs, and use those consistently. v2: Clear out pipestat_irq_mask[] and PIPE_FIFO_UNDERRUN_STATUS in vlv_display_irq_reset() (Imre) Signed-off-by: Ville Syrjälä Reviewed-by: Imre Deak (v1) Link: http://patchwork.freedesktop.org/patch/msgid/1460476574-1921-1-git-send-email-ville.syrjala@linux.intel.com --- diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 1d21ebfffd4d..0fcd8b24a1de 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -3306,13 +3306,18 @@ static void vlv_display_irq_reset(struct drm_i915_private *dev_priv) { enum pipe pipe; - i915_hotplug_interrupt_update(dev_priv, 0xFFFFFFFF, 0); + i915_hotplug_interrupt_update_locked(dev_priv, 0xffffffff, 0); I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); - for_each_pipe(dev_priv, pipe) - I915_WRITE(PIPESTAT(pipe), 0xffff); + for_each_pipe(dev_priv, pipe) { + I915_WRITE(PIPESTAT(pipe), + PIPE_FIFO_UNDERRUN_STATUS | + PIPESTAT_INT_STATUS_MASK); + dev_priv->pipestat_irq_mask[pipe] = 0; + } GEN5_IRQ_RESET(VLV_); + dev_priv->irq_mask = ~0; } static void valleyview_irq_preinstall(struct drm_device *dev) @@ -3323,7 +3328,9 @@ static void valleyview_irq_preinstall(struct drm_device *dev) I915_WRITE(DPINVGTT, DPINVGTT_STATUS_MASK); + spin_lock_irq(&dev_priv->irq_lock); vlv_display_irq_reset(dev_priv); + spin_unlock_irq(&dev_priv->irq_lock); } static void gen8_gt_irq_reset(struct drm_i915_private *dev_priv) @@ -3398,7 +3405,9 @@ static void cherryview_irq_preinstall(struct drm_device *dev) I915_WRITE(DPINVGTT, DPINVGTT_STATUS_MASK_CHV); + spin_lock_irq(&dev_priv->irq_lock); vlv_display_irq_reset(dev_priv); + spin_unlock_irq(&dev_priv->irq_lock); } static u32 intel_hpd_enabled_irqs(struct drm_device *dev, @@ -3645,7 +3654,7 @@ static int ironlake_irq_postinstall(struct drm_device *dev) return 0; } -static void valleyview_display_irqs_install(struct drm_i915_private *dev_priv) +static void vlv_display_irq_postinstall(struct drm_i915_private *dev_priv) { u32 pipestat_mask; u32 iir_mask; @@ -3679,40 +3688,6 @@ static void valleyview_display_irqs_install(struct drm_i915_private *dev_priv) POSTING_READ(VLV_IMR); } -static void valleyview_display_irqs_uninstall(struct drm_i915_private *dev_priv) -{ - u32 pipestat_mask; - u32 iir_mask; - enum pipe pipe; - - iir_mask = I915_DISPLAY_PORT_INTERRUPT | - I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | - I915_DISPLAY_PIPE_B_EVENT_INTERRUPT; - if (IS_CHERRYVIEW(dev_priv)) - iir_mask |= I915_DISPLAY_PIPE_C_EVENT_INTERRUPT; - - dev_priv->irq_mask |= iir_mask; - I915_WRITE(VLV_IMR, dev_priv->irq_mask); - I915_WRITE(VLV_IER, ~dev_priv->irq_mask); - I915_WRITE(VLV_IIR, iir_mask); - I915_WRITE(VLV_IIR, iir_mask); - POSTING_READ(VLV_IIR); - - pipestat_mask = PLANE_FLIP_DONE_INT_STATUS_VLV | - PIPE_CRC_DONE_INTERRUPT_STATUS; - - i915_disable_pipestat(dev_priv, PIPE_A, PIPE_GMBUS_INTERRUPT_STATUS); - for_each_pipe(dev_priv, pipe) - i915_disable_pipestat(dev_priv, pipe, pipestat_mask); - - pipestat_mask = PIPESTAT_INT_STATUS_MASK | - PIPE_FIFO_UNDERRUN_STATUS; - - for_each_pipe(dev_priv, pipe) - I915_WRITE(PIPESTAT(pipe), pipestat_mask); - POSTING_READ(PIPESTAT(PIPE_A)); -} - void valleyview_enable_display_irqs(struct drm_i915_private *dev_priv) { assert_spin_locked(&dev_priv->irq_lock); @@ -3723,7 +3698,7 @@ void valleyview_enable_display_irqs(struct drm_i915_private *dev_priv) dev_priv->display_irqs_enabled = true; if (intel_irqs_enabled(dev_priv)) - valleyview_display_irqs_install(dev_priv); + vlv_display_irq_postinstall(dev_priv); } void valleyview_disable_display_irqs(struct drm_i915_private *dev_priv) @@ -3736,36 +3711,14 @@ void valleyview_disable_display_irqs(struct drm_i915_private *dev_priv) dev_priv->display_irqs_enabled = false; if (intel_irqs_enabled(dev_priv)) - valleyview_display_irqs_uninstall(dev_priv); + vlv_display_irq_reset(dev_priv); } -static void vlv_display_irq_postinstall(struct drm_i915_private *dev_priv) -{ - dev_priv->irq_mask = ~0; - - i915_hotplug_interrupt_update(dev_priv, 0xffffffff, 0); - POSTING_READ(PORT_HOTPLUG_EN); - - I915_WRITE(VLV_IIR, 0xffffffff); - I915_WRITE(VLV_IIR, 0xffffffff); - I915_WRITE(VLV_IER, ~dev_priv->irq_mask); - I915_WRITE(VLV_IMR, dev_priv->irq_mask); - POSTING_READ(VLV_IMR); - - /* Interrupt setup is already guaranteed to be single-threaded, this is - * just to make the assert_spin_locked check happy. */ - spin_lock_irq(&dev_priv->irq_lock); - if (dev_priv->display_irqs_enabled) - valleyview_display_irqs_install(dev_priv); - spin_unlock_irq(&dev_priv->irq_lock); -} static int valleyview_irq_postinstall(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; - vlv_display_irq_postinstall(dev_priv); - gen5_gt_irq_postinstall(dev); /* ack & enable invalid PTE error interrupts */ @@ -3774,6 +3727,10 @@ static int valleyview_irq_postinstall(struct drm_device *dev) I915_WRITE(DPINVGTT, DPINVGTT_EN_MASK); #endif + spin_lock_irq(&dev_priv->irq_lock); + vlv_display_irq_postinstall(dev_priv); + spin_unlock_irq(&dev_priv->irq_lock); + I915_WRITE(VLV_MASTER_IER, MASTER_INTERRUPT_ENABLE); return 0; @@ -3874,10 +3831,12 @@ static int cherryview_irq_postinstall(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; - vlv_display_irq_postinstall(dev_priv); - gen8_gt_irq_postinstall(dev_priv); + spin_lock_irq(&dev_priv->irq_lock); + vlv_display_irq_postinstall(dev_priv); + spin_unlock_irq(&dev_priv->irq_lock); + I915_WRITE(GEN8_MASTER_IRQ, MASTER_INTERRUPT_ENABLE); POSTING_READ(GEN8_MASTER_IRQ); @@ -3894,20 +3853,6 @@ static void gen8_irq_uninstall(struct drm_device *dev) gen8_irq_reset(dev); } -static void vlv_display_irq_uninstall(struct drm_i915_private *dev_priv) -{ - /* Interrupt setup is already guaranteed to be single-threaded, this is - * just to make the assert_spin_locked check happy. */ - spin_lock_irq(&dev_priv->irq_lock); - if (dev_priv->display_irqs_enabled) - valleyview_display_irqs_uninstall(dev_priv); - spin_unlock_irq(&dev_priv->irq_lock); - - vlv_display_irq_reset(dev_priv); - - dev_priv->irq_mask = ~0; -} - static void valleyview_irq_uninstall(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -3921,7 +3866,9 @@ static void valleyview_irq_uninstall(struct drm_device *dev) I915_WRITE(HWSTAM, 0xffffffff); - vlv_display_irq_uninstall(dev_priv); + spin_lock_irq(&dev_priv->irq_lock); + vlv_display_irq_reset(dev_priv); + spin_unlock_irq(&dev_priv->irq_lock); } static void cherryview_irq_uninstall(struct drm_device *dev) @@ -3938,7 +3885,9 @@ static void cherryview_irq_uninstall(struct drm_device *dev) GEN5_IRQ_RESET(GEN8_PCU_); - vlv_display_irq_uninstall(dev_priv); + spin_lock_irq(&dev_priv->irq_lock); + vlv_display_irq_reset(dev_priv); + spin_unlock_irq(&dev_priv->irq_lock); } static void ironlake_irq_uninstall(struct drm_device *dev)