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drm/amd/pm: Disable ULV even if unsupported (v3)

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[ Upstream commit 3a0c3a4035 ]

Always send PPSMC_MSG_DisableULV to the SMC, even if ULV mode
is unsupported, to make sure it is properly turned off.

v3:
Simplify si_disable_ulv further.
Always check the return value of amdgpu_si_send_msg_to_smc.

Fixes: 841686df9f ("drm/amdgpu: add SI DPM support (v4)")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Timur Kristóf
2025-08-28 17:11:04 +02:00
committed by Greg Kroah-Hartman
parent 3f185e616f
commit 32710128d3
1 changed files with 3 additions and 7 deletions
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10
drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c
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@@ -5613,14 +5613,10 @@ static int si_populate_smc_t(struct amdgpu_device *adev,
static int si_disable_ulv(struct amdgpu_device *adev)
{
struct si_power_info *si_pi = si_get_pi(adev);
struct si_ulv_param *ulv = &si_pi->ulv;
PPSMC_Result r;
if (ulv->supported)
return (amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_DisableULV) == PPSMC_Result_OK) ?
0 : -EINVAL;
return 0;
r = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_DisableULV);
return (r == PPSMC_Result_OK) ? 0 : -EINVAL;
}
static bool si_is_state_ulv_compatible(struct amdgpu_device *adev,