From d07f1c20dd7c5d94cb7eceb822a060c108e49d23 Mon Sep 17 00:00:00 2001 From: Le Ma Date: Thu, 7 Sep 2023 15:32:13 +0800 Subject: drm/amd/pm: add xgmi plpd mode selecting interface for smu v13.0.6 Add the interface to change xgmi per-link power down policy. v2: split from sysfs interface code and miscellaneous updates v3: check against XGMI_PLPD_DEFAULT/XGMI_PLPD_OPTIMIZED and pass PPSMC param Signed-off-by: Le Ma Reviewed-by: Asad Kamal Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c') diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c index e6f1620acdd4..893359b26418 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c @@ -3157,6 +3157,30 @@ static int smu_get_prv_buffer_details(void *handle, void **addr, size_t *size) return 0; } +int smu_set_xgmi_plpd_mode(struct smu_context *smu, + enum pp_xgmi_plpd_mode mode) +{ + int ret = -EOPNOTSUPP; + + if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled) + return ret; + + /* PLPD policy is not supported if it's NONE */ + if (smu->plpd_mode == XGMI_PLPD_NONE) + return ret; + + if (smu->plpd_mode == mode) + return 0; + + if (smu->ppt_funcs && smu->ppt_funcs->select_xgmi_plpd_policy) + ret = smu->ppt_funcs->select_xgmi_plpd_policy(smu, mode); + + if (!ret) + smu->plpd_mode = mode; + + return ret; +} + static const struct amd_pm_funcs swsmu_pm_funcs = { /* export for sysfs */ .set_fan_control_mode = smu_set_fan_control_mode, -- cgit v1.2.3