drm/amd/powerplay: add profiling mode in dpm level

In some case, App need to run under max stable clock.
so export profiling mode: GFX CG was disabled.
and user can select the max stable clock of the device.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index ccf50b8b854b..0345fbbfff4e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -124,6 +124,7 @@ static ssize_t amdgpu_get_dpm_forced_performance_level(struct device *dev,
                         (level & AMD_DPM_FORCED_LEVEL_LOW) ? "low" :
                         (level & AMD_DPM_FORCED_LEVEL_HIGH) ? "high" :
                         (level & AMD_DPM_FORCED_LEVEL_MANUAL) ? "manual" :
+                        (level & AMD_DPM_FORCED_LEVEL_PROFILING) ? "profiling" :
                         "unknown"));
 }
 
@@ -135,6 +136,7 @@ static ssize_t amdgpu_set_dpm_forced_performance_level(struct device *dev,
         struct drm_device *ddev = dev_get_drvdata(dev);
         struct amdgpu_device *adev = ddev->dev_private;
         enum amd_dpm_forced_level level;
+        enum amd_dpm_forced_level current_level;
         int ret = 0;
 
         /* Can't force performance level when the card is off */
@@ -142,6 +144,8 @@ static ssize_t amdgpu_set_dpm_forced_performance_level(struct device *dev,
              (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                 return -EINVAL;
 
+        current_level = amdgpu_dpm_get_performance_level(adev);
+
         if (strncmp("low", buf, strlen("low")) == 0) {
                 level = AMD_DPM_FORCED_LEVEL_LOW;
         } else if (strncmp("high", buf, strlen("high")) == 0) {
@@ -150,11 +154,24 @@ static ssize_t amdgpu_set_dpm_forced_performance_level(struct device *dev,
                 level = AMD_DPM_FORCED_LEVEL_AUTO;
         } else if (strncmp("manual", buf, strlen("manual")) == 0) {
                 level = AMD_DPM_FORCED_LEVEL_MANUAL;
+        } else if (strncmp("profile", buf, strlen("profile")) == 0) {
+                level = AMD_DPM_FORCED_LEVEL_PROFILING;
         } else {
                 count = -EINVAL;
                 goto fail;
         }
 
+        if (current_level == level)
+                return 0;
+
+        if (level == AMD_DPM_FORCED_LEVEL_PROFILING)
+                amdgpu_set_clockgating_state(adev, AMD_IP_BLOCK_TYPE_GFX,
+                                                AMD_CG_STATE_UNGATE);
+        else if (level != AMD_DPM_FORCED_LEVEL_PROFILING &&
+                        current_level == AMD_DPM_FORCED_LEVEL_PROFILING)
+                amdgpu_set_clockgating_state(adev, AMD_IP_BLOCK_TYPE_GFX,
+                                                AMD_CG_STATE_GATE);
+
         if (adev->pp_enabled)
                 amdgpu_dpm_force_performance_level(adev, level);
         else {