leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drm/i915/gen8+: Init/reset display interrupts only if i915 IRQs are enabled

Browse Source 
Only init / reset the display interrupts during power well enabling /
disabling if the i915 interrupts are enabled. So far we did the
init / reset during driver loading / resuming too, where
initialization / enabling of the i915 interrupts happens only at a later
point. This didn't cause a problem due to GEN8_MASTER_IRQ_CONTROL being
cleared, but triggered gen3_assert_iir_is_zero() in GEN8_IRQ_INIT_NDX().

References: https://bugs.freedesktop.org/show_bug.cgi?id=102988
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20170928100624.15533-1-imre.deak@intel.com
This commit is contained in:
Imre Deak 2017-09-28 13:06:24 +03:00
parent dd9f31c7a3
commit 9dfe2e3ad3
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/gpu/drm/i915/i915_irq.c
View File

@ -3163,10 +3163,17 @@ void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv,
enum pipe pipe;
spin_lock_irq(&dev_priv->irq_lock);
if (!intel_irqs_enabled(dev_priv)) {
spin_unlock_irq(&dev_priv->irq_lock);
return;
}
for_each_pipe_masked(dev_priv, pipe, pipe_mask)
GEN8_IRQ_INIT_NDX(DE_PIPE, pipe,
dev_priv->de_irq_mask[pipe],
~dev_priv->de_irq_mask[pipe] | extra_ier);
spin_unlock_irq(&dev_priv->irq_lock);
}
@ -3176,8 +3183,15 @@ void gen8_irq_power_well_pre_disable(struct drm_i915_private *dev_priv,
enum pipe pipe;
spin_lock_irq(&dev_priv->irq_lock);
if (!intel_irqs_enabled(dev_priv)) {
spin_unlock_irq(&dev_priv->irq_lock);
return;
}
for_each_pipe_masked(dev_priv, pipe, pipe_mask)
GEN8_IRQ_RESET_NDX(DE_PIPE, pipe);
spin_unlock_irq(&dev_priv->irq_lock);
/* make sure we're done processing display irqs */