drm/amdgpu: implement read_sensor() for pre-powerplay chips

Add the GPU temperature, the shader clock and eventually the
memory clock (as well as the GPU load on CI). The main goal is
to expose this info to the userspace like Radeon.

v2: - add AMDGPU_PP_SENSOR_GPU_LOAD on CI
    - update the commit description

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
index 5dd9daae9eef..8c96a4caa715 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
@@ -270,6 +270,8 @@ struct amdgpu_dpm_funcs {
                                 struct amdgpu_ps *cps,
                                 struct amdgpu_ps *rps,
                                 bool *equal);
+        int (*read_sensor)(struct amdgpu_device *adev, int idx, void *value,
+                           int *size);
 
         struct amd_vce_state* (*get_vce_clock_state)(struct amdgpu_device *adev, unsigned idx);
         int (*reset_power_profile_state)(struct amdgpu_device *adev,
@@ -293,7 +295,7 @@ struct amdgpu_dpm_funcs {
 #define amdgpu_dpm_read_sensor(adev, idx, value, size) \
         ((adev)->pp_enabled ? \
                 (adev)->powerplay.pp_funcs->read_sensor(adev->powerplay.pp_handle, (idx), (value), (size)) : \
-                -EINVAL)
+                (adev)->pm.funcs->read_sensor((adev), (idx), (value), (size)))
 
 #define amdgpu_dpm_get_temperature(adev) \
         ((adev)->pp_enabled ?                                           \