drm/amd: Restore cached manual clock settings during resume

If the SCLK limits have been set before S3 they will not
be restored. The limits are however cached in the driver and so
they can be restored by running a commit sequence during resume.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20250725031222.3015095-3-superm1@kernel.org
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 4e9526924d09057a9ba854305e17eded900ced82)
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index 310f51ff05b9e7c8900bbca7325ad8b838b0203d..b47cb4a5f4887d6d9bcf00abe3a08eb9ff792532 100644 (file)
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -77,6 +77,9 @@ static void smu_power_profile_mode_get(struct smu_context *smu,
 static void smu_power_profile_mode_put(struct smu_context *smu,
                                       enum PP_SMC_POWER_PROFILE profile_mode);
 static enum smu_clk_type smu_convert_to_smuclk(enum pp_clock_type type);
+static int smu_od_edit_dpm_table(void *handle,
+                                enum PP_OD_DPM_TABLE_COMMAND type,
+                                long *input, uint32_t size);
 
 static int smu_sys_get_pp_feature_mask(void *handle,
                                       char *buf)
@@ -2195,6 +2198,7 @@ static int smu_resume(struct amdgpu_ip_block *ip_block)
        int ret;
        struct amdgpu_device *adev = ip_block->adev;
        struct smu_context *smu = adev->powerplay.pp_handle;
+       struct smu_dpm_context *smu_dpm_ctx = &(smu->smu_dpm);
 
        if (amdgpu_sriov_multi_vf_mode(adev))
                return 0;
@@ -2232,6 +2236,12 @@ static int smu_resume(struct amdgpu_ip_block *ip_block)
                        return ret;
        }
 
+       if (smu_dpm_ctx->dpm_level == AMD_DPM_FORCED_LEVEL_MANUAL) {
+               ret = smu_od_edit_dpm_table(smu, PP_OD_COMMIT_DPM_TABLE, NULL, 0);
+               if (ret)
+                       return ret;
+       }
+
        dev_info(adev->dev, "SMU is resumed successfully!\n");
 
        return 0;