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drm/i915: Wire up PCH interrupts for bdw 

Gives us hotplug, gmbus, dp aux and south errors (underrun
reporting!).

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2013-11-07 11:05:43 +01:00
parent 6d766f022a
commit 92d03a8048
1 changed files with 16 additions and 0 deletions
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16
drivers/gpu/drm/i915/i915_irq.c
View File

@ -1821,6 +1821,22 @@ static irqreturn_t gen8_irq_handler(int irq, void *arg)
DRM_ERROR("The master control interrupt lied (DE PIPE)!\n");
}
if (!HAS_PCH_NOP(dev) && master_ctl & GEN8_DE_PCH_IRQ) {
/*
* FIXME(BDW): Assume for now that the new interrupt handling
* scheme also closed the SDE interrupt handling race we've seen
* on older pch-split platforms. But this needs testing.
*/
u32 pch_iir = I915_READ(SDEIIR);
cpt_irq_handler(dev, pch_iir);
if (pch_iir) {
I915_WRITE(SDEIIR, pch_iir);
ret = IRQ_HANDLED;
}
}
I915_WRITE(GEN8_MASTER_IRQ, GEN8_MASTER_IRQ_CONTROL);
POSTING_READ(GEN8_MASTER_IRQ);