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Commit 5cc9c0b5 authored by Jeremy Gebben's avatar Jeremy Gebben Committed by Tarun Karra
Browse files

msm: kgsl: Turn on IOMMU clocks during preemption 



During preemption there is a good chance that the pagetable will get
switched by the CP. Turn on the IOMMU clocks in anticipation of that
happening.

Change-Id: Ibec2a903b1957de5d9babefc224ad22c66fb6b62
Signed-off-by: default avatarJeremy Gebben <jgebben@codeaurora.org>
parent b0a8796a

drivers/gpu/msm/adreno_a5xx.c

+5 −0
Original line number Diff line number Diff line
@@ -3082,6 +3082,9 @@ static void a5xx_preempt_clear_state( 
	adreno_readreg(adreno_dev, ADRENO_REG_CP_RB_RPTR,

			&(adreno_dev->cur_rb->rptr));



	/* turn on IOMMU as the preemption may trigger pt switch */

	kgsl_mmu_enable_clk(&device->mmu);



	/*

	 * setup memory to do the switch to highest priority RB

	 * which is not empty or may be starving away(poor thing)
@@ -3189,6 +3192,8 @@ static void a5xx_preempt_complete_state( 
				ADRENO_DISPATCHER_RB_STARVE_TIMER_UNINIT;

		}

	}

	adreno_ringbuffer_mmu_disable_clk_on_ts(device, adreno_dev->cur_rb,

						adreno_dev->cur_rb->timestamp);



	atomic_set(&dispatcher->preemption_state,

		ADRENO_DISPATCHER_PREEMPT_CLEAR);