drm/i915: extract and improve gen8_irq_power_well_post_enable
Move it from hsw_power_well_post_enable() (intel_pm.c) to i915_irq.c
so we can reuse the nice IRQ macros we have there. The main difference
is that now we're going to check if the IIR register is non-zero when
we try to re-enable the interrupts.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 6f19420..e2e9bb8f 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -3478,6 +3478,18 @@
ibx_irq_reset(dev);
}
+void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv)
+{
+ unsigned long irqflags;
+
+ spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
+ GEN8_IRQ_INIT_NDX(DE_PIPE, PIPE_B, dev_priv->de_irq_mask[PIPE_B],
+ ~dev_priv->de_irq_mask[PIPE_B]);
+ GEN8_IRQ_INIT_NDX(DE_PIPE, PIPE_C, dev_priv->de_irq_mask[PIPE_C],
+ ~dev_priv->de_irq_mask[PIPE_C]);
+ spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
+}
+
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 9d97a50..bf415df 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -693,6 +693,7 @@
void intel_runtime_pm_restore_interrupts(struct drm_device *dev);
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 */
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 25ae4e6..d23ba37 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5998,7 +5998,6 @@
static void hsw_power_well_post_enable(struct drm_i915_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
- unsigned long irqflags;
/*
* After we re-enable the power well, if we touch VGA register 0x3d5
@@ -6014,21 +6013,8 @@
outb(inb(VGA_MSR_READ), VGA_MSR_WRITE);
vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
- if (IS_BROADWELL(dev)) {
- spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
- I915_WRITE(GEN8_DE_PIPE_IMR(PIPE_B),
- dev_priv->de_irq_mask[PIPE_B]);
- I915_WRITE(GEN8_DE_PIPE_IER(PIPE_B),
- ~dev_priv->de_irq_mask[PIPE_B] |
- GEN8_PIPE_VBLANK);
- I915_WRITE(GEN8_DE_PIPE_IMR(PIPE_C),
- dev_priv->de_irq_mask[PIPE_C]);
- I915_WRITE(GEN8_DE_PIPE_IER(PIPE_C),
- ~dev_priv->de_irq_mask[PIPE_C] |
- GEN8_PIPE_VBLANK);
- POSTING_READ(GEN8_DE_PIPE_IER(PIPE_C));
- spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
- }
+ if (IS_BROADWELL(dev))
+ gen8_irq_power_well_post_enable(dev_priv);
}
static void hsw_set_power_well(struct drm_i915_private *dev_priv,