drm/amd/powerplay: implement sysfs of pp_cur_state function

add function of smu_get_currente_state for sw-smu.

v2: fix code typo error if (ret);

Signed-off-by: Kevin Wang <Kevin1.Wang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 15 insertions, 9 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index 5eda007ea632..569f7be61b53 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -377,23 +377,29 @@ static ssize_t amdgpu_get_pp_cur_state(struct device *dev,
         struct drm_device *ddev = dev_get_drvdata(dev);
         struct amdgpu_device *adev = ddev->dev_private;
         struct pp_states_info data;
+        struct smu_context *smu = &adev->smu;
         enum amd_pm_state_type pm = 0;
-        int i = 0;
+        int i = 0, ret = 0;
 
-        if (adev->powerplay.pp_funcs->get_current_power_state
+        if (is_support_sw_smu(adev)) {
+                pm = smu_get_current_power_state(smu);
+                ret = smu_get_power_num_states(smu, &data);
+                if (ret)
+                        return ret;
+        } else if (adev->powerplay.pp_funcs->get_current_power_state
                  && adev->powerplay.pp_funcs->get_pp_num_states) {
                 pm = amdgpu_dpm_get_current_power_state(adev);
                 amdgpu_dpm_get_pp_num_states(adev, &data);
+        }
 
-                for (i = 0; i < data.nums; i++) {
-                        if (pm == data.states[i])
-                                break;
-                }
-
-                if (i == data.nums)
-                        i = -EINVAL;
+        for (i = 0; i < data.nums; i++) {
+                if (pm == data.states[i])
+                        break;
         }
 
+        if (i == data.nums)
+                i = -EINVAL;
+
         return snprintf(buf, PAGE_SIZE, "%d\n", i);
 }