[Intel-gfx] [PATCH v2 02/10] drm/i915: Fix up vlv/chv display irq setup
ville.syrjala at linux.intel.com
ville.syrjala at linux.intel.com
Tue Apr 12 15:56:14 UTC 2016
From: Ville Syrjälä <ville.syrjala at linux.intel.com>
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 <ville.syrjala at linux.intel.com>
Reviewed-by: Imre Deak <imre.deak at intel.com> (v1)
---
drivers/gpu/drm/i915/i915_irq.c | 109 +++++++++++-----------------------------
1 file changed, 29 insertions(+), 80 deletions(-)
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)
--
2.7.4
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