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Commit 92d03a80 authored by Daniel Vetter's avatar Daniel Vetter
Browse files

drm/i915: Wire up PCH interrupts for bdw 



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

Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: default avatarBen Widawsky <ben@bwidawsk.net>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 6d766f02

drivers/gpu/drm/i915/i915_irq.c

+16 −0
Original line number Diff line number Diff line
@@ -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);