drm/i915: add helper for checking whether IRQs are enabled

Now that we use the runtime IRQ enable/disable functions in our suspend
path, we can simply check the pm._irqs_disabled flag everywhere.  So
rename it to catch the users, and add an inline for it to make the
checks clear everywhere.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index fc39610..7e72800 100644 (file)
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1996,7 +1996,7 @@ static int i915_pc8_status(struct seq_file *m, void *unused)
 
        seq_printf(m, "GPU idle: %s\n", yesno(!dev_priv->mm.busy));
        seq_printf(m, "IRQs disabled: %s\n",
-                  yesno(dev_priv->pm.irqs_disabled));
+                  yesno(!intel_irqs_enabled(dev_priv)));
 
        return 0;
 }

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 7f4f2b7..8b781f8 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1339,7 +1339,7 @@ struct ilk_wm_values {
  */
 struct i915_runtime_pm {
        bool suspended;
-       bool irqs_disabled;
+       bool _irqs_disabled;
 };
 
 enum intel_pipe_crc_source {

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index ef047bc..ed0b5fc 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1161,7 +1161,7 @@ static int __wait_seqno(struct intel_engine_cs *ring, u32 seqno,
        unsigned long timeout_expire;
        int ret;
 
-       WARN(dev_priv->pm.irqs_disabled, "IRQs disabled\n");
+       WARN(!intel_irqs_enabled(dev_priv), "IRQs disabled");
 
        if (i915_seqno_passed(ring->get_seqno(ring, true), seqno))
                return 0;

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 3ae33e7..6774f88 100644 (file)
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -136,7 +136,7 @@ ironlake_enable_display_irq(struct drm_i915_private *dev_priv, u32 mask)
 {
        assert_spin_locked(&dev_priv->irq_lock);
 
-       if (WARN_ON(dev_priv->pm.irqs_disabled))
+       if (WARN_ON(!intel_irqs_enabled(dev_priv)))
                return;
 
        if ((dev_priv->irq_mask & mask) != 0) {
@@ -151,7 +151,7 @@ ironlake_disable_display_irq(struct drm_i915_private *dev_priv, u32 mask)
 {
        assert_spin_locked(&dev_priv->irq_lock);
 
-       if (dev_priv->pm.irqs_disabled)
+       if (!intel_irqs_enabled(dev_priv))
                return;
 
        if ((dev_priv->irq_mask & mask) != mask) {
@@ -173,7 +173,7 @@ static void ilk_update_gt_irq(struct drm_i915_private *dev_priv,
 {
        assert_spin_locked(&dev_priv->irq_lock);
 
-       if (WARN_ON(dev_priv->pm.irqs_disabled))
+       if (WARN_ON(!intel_irqs_enabled(dev_priv)))
                return;
 
        dev_priv->gt_irq_mask &= ~interrupt_mask;
@@ -206,7 +206,7 @@ static void snb_update_pm_irq(struct drm_i915_private *dev_priv,
 
        assert_spin_locked(&dev_priv->irq_lock);
 
-       if (WARN_ON(dev_priv->pm.irqs_disabled))
+       if (WARN_ON(!intel_irqs_enabled(dev_priv)))
                return;
 
        new_val = dev_priv->pm_irq_mask;
@@ -264,7 +264,7 @@ static void bdw_update_pm_irq(struct drm_i915_private *dev_priv,
 
        assert_spin_locked(&dev_priv->irq_lock);
 
-       if (WARN_ON(dev_priv->pm.irqs_disabled))
+       if (WARN_ON(!intel_irqs_enabled(dev_priv)))
                return;
 
        new_val = dev_priv->pm_irq_mask;
@@ -420,7 +420,7 @@ static void ibx_display_interrupt_update(struct drm_i915_private *dev_priv,
 
        assert_spin_locked(&dev_priv->irq_lock);
 
-       if (WARN_ON(dev_priv->pm.irqs_disabled))
+       if (WARN_ON(!intel_irqs_enabled(dev_priv)))
                return;
 
        I915_WRITE(SDEIMR, sdeimr);
@@ -4774,7 +4774,7 @@ void intel_runtime_pm_disable_interrupts(struct drm_device *dev)
        struct drm_i915_private *dev_priv = dev->dev_private;
 
        dev->driver->irq_uninstall(dev);
-       dev_priv->pm.irqs_disabled = true;
+       dev_priv->pm._irqs_disabled = true;
 }
 
 /* Restore interrupts so we can recover from runtime PM. */
@@ -4782,7 +4782,7 @@ void intel_runtime_pm_restore_interrupts(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
 
-       dev_priv->pm.irqs_disabled = false;
+       dev_priv->pm._irqs_disabled = false;
        dev->driver->irq_preinstall(dev);
        dev->driver->irq_postinstall(dev);
 }

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 06566d6..1cdd1c1 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -7341,7 +7341,7 @@ static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
         * gen-specific and since we only disable LCPLL after we fully disable
         * the interrupts, the check below should be enough.
         */
-       WARN(!dev_priv->pm.irqs_disabled, "IRQs enabled\n");
+       WARN(intel_irqs_enabled(dev_priv), "IRQs enabled\n");
 }
 
 static uint32_t hsw_read_dcomp(struct drm_i915_private *dev_priv)

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index bf415df..8fc68c7 100644 (file)
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -691,11 +691,19 @@ void gen8_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
 void gen8_disable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
 void intel_runtime_pm_disable_interrupts(struct drm_device *dev);
 void intel_runtime_pm_restore_interrupts(struct drm_device *dev);
+static inline bool intel_irqs_enabled(struct drm_i915_private *dev_priv)
+{
+       /*
+        * We only use drm_irq_uninstall() at unload and VT switch, so
+        * this is the only thing we need to check.
+        */
+       return !dev_priv->pm._irqs_disabled;
+}
+
 int intel_get_crtc_scanline(struct intel_crtc *crtc);
 void i9xx_check_fifo_underruns(struct drm_device *dev);
 void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv);
 
-
 /* intel_crt.c */
 void intel_crt_init(struct drm_device *dev);
 

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index d23ba37..3f88f29 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4976,7 +4976,7 @@ void intel_suspend_gt_powersave(struct drm_device *dev)
        struct drm_i915_private *dev_priv = dev->dev_private;
 
        /* Interrupts should be disabled already to avoid re-arming. */
-       WARN_ON(dev->irq_enabled && !dev_priv->pm.irqs_disabled);
+       WARN_ON(intel_irqs_enabled(dev_priv));
 
        flush_delayed_work(&dev_priv->rps.delayed_resume_work);
 
@@ -4991,7 +4991,7 @@ void intel_disable_gt_powersave(struct drm_device *dev)
        struct drm_i915_private *dev_priv = dev->dev_private;
 
        /* Interrupts should be disabled already to avoid re-arming. */
-       WARN_ON(dev->irq_enabled && !dev_priv->pm.irqs_disabled);
+       WARN_ON(intel_irqs_enabled(dev_priv));
 
        if (IS_IRONLAKE_M(dev)) {
                ironlake_disable_drps(dev);
@@ -7069,5 +7069,5 @@ void intel_pm_setup(struct drm_device *dev)
                          intel_gen6_powersave_work);
 
        dev_priv->pm.suspended = false;
-       dev_priv->pm.irqs_disabled = false;
+       dev_priv->pm._irqs_disabled = false;
 }