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

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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 <le.ma@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Le Ma
2023-02-03 14:38:33 +08:00
committed by Alex Deucher
parent 7b08b2e1ca
commit 35ff4301eb
1 changed files with 2 additions and 0 deletions
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drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
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@@ -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)) {