Commit 35ff4301 authored by Le Ma's avatar Le Ma Committed by Alex Deucher
Browse files

drm/amdgpu: enable context empty interrupt on sdma v4.4.2 



With SDMA_CTNL.CTXEMPTY_INT_ENABLE set, the F32 clock can be gated when
SDMA finishes all job and goes to idle.

And no specific interrupt handling is required in driver.

Signed-off-by: default avatarLe Ma <le.ma@amd.com>
Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 7b08b2e1

drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c

+2 −0
Original line number Diff line number Diff line
@@ -890,6 +890,8 @@ static int sdma_v4_4_2_inst_start(struct amdgpu_device *adev, 
		/* set utc l1 enable flag always to 1 */

		temp = RREG32_SDMA(i, regSDMA_CNTL);

		temp = REG_SET_FIELD(temp, SDMA_CNTL, UTC_L1_ENABLE, 1);

		/* enable context empty interrupt during initialization */

		temp = REG_SET_FIELD(temp, SDMA_CNTL, CTXEMPTY_INT_ENABLE, 1);

		WREG32_SDMA(i, regSDMA_CNTL, temp);



		if (!amdgpu_sriov_vf(adev)) {