amd\powerplay Implement get dal power level

BugLink: http://bugs.launchpad.net/bugs/1546572

Implement get dal power level and simple clock info
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
(cherry picked from commit c4dd206b)
Signed-off-by: Alberto Milone <alberto.milone@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

drivers/gpu/drm/amd/powerplay/amd_powerplay.c

@@ -619,3 +619,16 @@ int amd_powerplay_display_configuration_change(void *handle, const void *input)
 	phm_store_dal_configuration_data(hwmgr, display_config);
 	return 0;
 }
+
+int amd_powerplay_get_display_power_level(void *handle,  void *output)
+{
+	struct pp_hwmgr  *hwmgr;
+
+	if (handle == NULL || output == NULL)
+		return -EINVAL;
+
+	hwmgr = ((struct pp_instance *)handle)->hwmgr;
+
+	return phm_get_dal_power_level(hwmgr,
+			(struct pp_dal_clock_info *)output);
+}

drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c

@@ -1544,7 +1544,7 @@ static void cz_hw_print_display_cfg(
 			display_cfg->cpu_pstate_separation_time);
 }
 
-int cz_set_cpu_power_state(struct pp_hwmgr *hwmgr)
+ static int cz_set_cpu_power_state(struct pp_hwmgr *hwmgr)
 {
 	struct cz_hwmgr *hw_data = (struct cz_hwmgr *)(hwmgr->backend);
 	uint32_t data = 0;
@@ -1576,7 +1576,7 @@ int cz_set_cpu_power_state(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int cz_store_cc6_data(struct pp_hwmgr *hwmgr, uint32_t separation_time,
+ static int cz_store_cc6_data(struct pp_hwmgr *hwmgr, uint32_t separation_time,
 			bool cc6_disable, bool pstate_disable, bool pstate_switch_disable)
 {
 	struct cz_hwmgr *hw_data = (struct cz_hwmgr *)(hwmgr->backend);
@@ -1596,6 +1596,28 @@ int cz_store_cc6_data(struct pp_hwmgr *hwmgr, uint32_t separation_time,
 	return 0;
 }
 
+ static int cz_get_dal_power_level(struct pp_hwmgr *hwmgr,
+		struct pp_dal_clock_info*info)
+{
+	uint32_t i;
+	const struct phm_clock_voltage_dependency_table * table =
+			hwmgr->dyn_state.vddc_dep_on_dal_pwrl;
+	const struct phm_clock_and_voltage_limits* limits =
+			&hwmgr->dyn_state.max_clock_voltage_on_ac;
+
+	info->engine_max_clock = limits->sclk;
+	info->memory_max_clock = limits->mclk;
+
+	for (i = table->count - 1; i > 0; i--) {
+
+		if (limits->vddc >= table->entries[i].v) {
+			info->level = table->entries[i].clk;
+			return 0;
+		}
+	}
+	return -EINVAL;
+}
+
 static const struct pp_hwmgr_func cz_hwmgr_funcs = {
 	.backend_init = cz_hwmgr_backend_init,
 	.backend_fini = cz_hwmgr_backend_fini,
@@ -1614,6 +1636,7 @@ static const struct pp_hwmgr_func cz_hwmgr_funcs = {
 	.print_current_perforce_level = cz_print_current_perforce_level,
 	.set_cpu_power_state = cz_set_cpu_power_state,
 	.store_cc6_data = cz_store_cc6_data,
+	.get_dal_power_level= cz_get_dal_power_level,
 };
 
 int cz_hwmgr_init(struct pp_hwmgr *hwmgr)

drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c

@@ -261,6 +261,15 @@ int phm_store_dal_configuration_data(struct pp_hwmgr *hwmgr,
 
 }
 
+int phm_get_dal_power_level(struct pp_hwmgr *hwmgr,
+		struct pp_dal_clock_info*info)
+{
+	if (hwmgr == NULL || hwmgr->hwmgr_func->get_dal_power_level == NULL)
+		return -EINVAL;
+
+	return hwmgr->hwmgr_func->get_dal_power_level(hwmgr,info);
+}
+
 int phm_set_cpu_power_state(struct pp_hwmgr *hwmgr)
 {
 	if (hwmgr != NULL && hwmgr->hwmgr_func->set_cpu_power_state != NULL)

drivers/gpu/drm/amd/powerplay/inc/amd_powerplay.h

@@ -138,6 +138,12 @@ struct amd_pp_display_configuration {
 	uint32_t cpu_pstate_separation_time;
 };
 
+struct amd_pp_dal_clock_info {
+	uint32_t	engine_max_clock;
+	uint32_t	memory_max_clock;
+	uint32_t	level;
+};
+
 enum {
 	PP_GROUP_UNKNOWN = 0,
 	PP_GROUP_GFX = 1,
@@ -212,4 +218,7 @@ int amd_powerplay_fini(void *handle);
 
 int amd_powerplay_display_configuration_change(void *handle, const void *input);
 
+int amd_powerplay_get_display_power_level(void *handle,  void *output);
+
+
 #endif /* _AMD_POWERPLAY_H_ */

drivers/gpu/drm/amd/powerplay/inc/hardwaremanager.h

@@ -323,6 +323,29 @@ struct phm_clocks {
 	uint32_t clock[MAX_NUM_CLOCKS];
 };
 
+enum PP_DAL_POWERLEVEL {
+	PP_DAL_POWERLEVEL_INVALID = 0,
+	PP_DAL_POWERLEVEL_ULTRALOW,
+	PP_DAL_POWERLEVEL_LOW,
+	PP_DAL_POWERLEVEL_NOMINAL,
+	PP_DAL_POWERLEVEL_PERFORMANCE,
+
+	PP_DAL_POWERLEVEL_0 = PP_DAL_POWERLEVEL_ULTRALOW,
+	PP_DAL_POWERLEVEL_1 = PP_DAL_POWERLEVEL_LOW,
+	PP_DAL_POWERLEVEL_2 = PP_DAL_POWERLEVEL_NOMINAL,
+	PP_DAL_POWERLEVEL_3 = PP_DAL_POWERLEVEL_PERFORMANCE,
+	PP_DAL_POWERLEVEL_4 = PP_DAL_POWERLEVEL_3+1,
+	PP_DAL_POWERLEVEL_5 = PP_DAL_POWERLEVEL_4+1,
+	PP_DAL_POWERLEVEL_6 = PP_DAL_POWERLEVEL_5+1,
+	PP_DAL_POWERLEVEL_7 = PP_DAL_POWERLEVEL_6+1,
+};
+
+struct pp_dal_clock_info {
+	uint32_t		engine_max_clock;/*dal validation clock on AC*/
+	uint32_t		memory_max_clock;/*dal validation clock on AC*/
+	enum PP_DAL_POWERLEVEL	level;	/*number of levels for the given clocks*/
+};
+
 extern int phm_enable_clock_power_gatings(struct pp_hwmgr *hwmgr);
 extern int phm_powergate_uvd(struct pp_hwmgr *hwmgr, bool gate);
 extern int phm_powergate_vce(struct pp_hwmgr *hwmgr, bool gate);
@@ -356,6 +379,9 @@ extern int phm_check_states_equal(struct pp_hwmgr *hwmgr,
 extern int phm_store_dal_configuration_data(struct pp_hwmgr *hwmgr,
 		const struct amd_pp_display_configuration *display_config);
 
+extern int phm_get_dal_power_level(struct pp_hwmgr *hwmgr,
+		struct pp_dal_clock_info*info);
+
 extern int phm_set_cpu_power_state(struct pp_hwmgr *hwmgr);
 
 #endif /* _HARDWARE_MANAGER_H_ */

drivers/gpu/drm/amd/powerplay/inc/hwmgr.h

@@ -86,22 +86,6 @@ enum PHM_BackEnd_Magic {
 	PHM_Cz_Magic          = 0x67DCBA25
 };
 
-enum PP_DAL_POWERLEVEL {
-	PP_DAL_POWERLEVEL_INVALID = 0,
-	PP_DAL_POWERLEVEL_ULTRALOW,
-	PP_DAL_POWERLEVEL_LOW,
-	PP_DAL_POWERLEVEL_NOMINAL,
-	PP_DAL_POWERLEVEL_PERFORMANCE,
-
-	PP_DAL_POWERLEVEL_0 = PP_DAL_POWERLEVEL_ULTRALOW,
-	PP_DAL_POWERLEVEL_1 = PP_DAL_POWERLEVEL_LOW,
-	PP_DAL_POWERLEVEL_2 = PP_DAL_POWERLEVEL_NOMINAL,
-	PP_DAL_POWERLEVEL_3 = PP_DAL_POWERLEVEL_PERFORMANCE,
-	PP_DAL_POWERLEVEL_4 = PP_DAL_POWERLEVEL_3+1,
-	PP_DAL_POWERLEVEL_5 = PP_DAL_POWERLEVEL_4+1,
-	PP_DAL_POWERLEVEL_6 = PP_DAL_POWERLEVEL_5+1,
-	PP_DAL_POWERLEVEL_7 = PP_DAL_POWERLEVEL_6+1,
-};
 
 #define PHM_PCIE_POWERGATING_TARGET_GFX            0
 #define PHM_PCIE_POWERGATING_TARGET_DDI            1
@@ -341,6 +325,8 @@ struct pp_hwmgr_func {
 	int (*store_cc6_data)(struct pp_hwmgr *hwmgr, uint32_t separation_time,
 				bool cc6_disable, bool pstate_disable,
 				bool pstate_switch_disable);
+	int (*get_dal_power_level)(struct pp_hwmgr *hwmgr,
+			struct pp_dal_clock_info*info);
 };
 
 struct pp_table_func {