From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
On chv the pipe-a power well is the new disp2d well, and it kills pretty
much everything in the display block. So we need to do the the same
dance that vlv does wrt. display irqs and hpd when the power well goes
up or down.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_runtime_pm.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index dcbecff..f5a78d5 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -577,6 +577,23 @@ static void chv_pipe_power_well_enable(struct drm_i915_private *dev_priv,
power_well->data != PIPE_C);
chv_set_pipe_power_well(dev_priv, power_well, true);
+
+ if (power_well->data == PIPE_A) {
+ spin_lock_irq(&dev_priv->irq_lock);
+ valleyview_enable_display_irqs(dev_priv);
+ spin_unlock_irq(&dev_priv->irq_lock);
+
+ /*
+ * During driver initialization/resume we can avoid restoring the
+ * part of the HW/SW state that will be inited anyway explicitly.
+ */
+ if (dev_priv->power_domains.initializing)
+ return;
+
+ intel_hpd_init(dev_priv);
+
+ i915_redisable_vga_power_on(dev_priv->dev);
+ }
}
static void chv_pipe_power_well_disable(struct drm_i915_private *dev_priv,
@@ -586,6 +603,12 @@ static void chv_pipe_power_well_disable(struct drm_i915_private *dev_priv,
power_well->data != PIPE_B &&
power_well->data != PIPE_C);
+ if (power_well->data == PIPE_A) {
+ spin_lock_irq(&dev_priv->irq_lock);
+ valleyview_disable_display_irqs(dev_priv);
+ spin_unlock_irq(&dev_priv->irq_lock);
+ }
+
chv_set_pipe_power_well(dev_priv, power_well, false);
if (power_well->data == PIPE_A)
--
2.0.4
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