From 35ff4301ebc37bd45c18edae08afd2983dc9a338 Mon Sep 17 00:00:00 2001 From: Le Ma Date: Fri, 3 Feb 2023 14:38:33 +0800 Subject: [PATCH] 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: Le Ma Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c index 729e26a..7aa26e7 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c @@ -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)) { -- 2.7.4