drm/amd/pm: add plpd_mode in smu_context to indicate current mode

Add enum pp_xgmi_plpd_mode to describe PLPD policies.

v2: move the enum from amdgpu_smu.h to kgd_pp_interface.h
Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/include/kgd_pp_interface.h

@@ -265,6 +265,14 @@ enum pp_power_type
 	PP_PWR_TYPE_FAST,
 };
 
+enum pp_xgmi_plpd_mode {
+	XGMI_PLPD_NONE = -1,
+	XGMI_PLPD_DISALLOW,
+	XGMI_PLPD_DEFAULT,
+	XGMI_PLPD_OPTIMIZED,
+	XGMI_PLPD_COUNT,
+};
+
 #define PP_GROUP_MASK        0xF0000000
 #define PP_GROUP_SHIFT       28
 

drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h

@@ -563,6 +563,8 @@ struct smu_context {
 	u32 debug_resp_reg;
 
 	struct delayed_work		swctf_delayed_work;
+
+	enum pp_xgmi_plpd_mode plpd_mode;
 };
 
 struct i2c_adapter;