drm/amd/powerplay: enable set_cpu_power_state task. (v2)

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

v2: integrate Jammy's crash fix
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
(cherry picked from commit 73afe621)
Signed-off-by: Alberto Milone <alberto.milone@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

drivers/gpu/drm/amd/powerplay/eventmgr/eventactionchains.c

@@ -260,7 +260,7 @@ const struct action_chain disable_user_2d_performance_action_chain = {
 static const pem_event_action *display_config_change_event[] = {
 	/* countDisplayConfigurationChangeEventTasks, */
 	unblock_adjust_power_state_tasks,
-	/* setCPUPowerState,*/
+	set_cpu_power_state,
 	notify_hw_power_source_tasks,
 	/* updateDALConfigurationTasks,
 	variBrightDisplayConfigurationChangeTasks, */

drivers/gpu/drm/amd/powerplay/eventmgr/eventsubchains.c

@@ -403,3 +403,8 @@ const pem_event_action uninitialize_thermal_controller_tasks[] = {
 	pem_task_uninitialize_thermal_controller,
 	NULL
 };
+
+const pem_event_action set_cpu_power_state[] = {
+	pem_task_set_cpu_power_state,
+	NULL
+};
\ No newline at end of file

drivers/gpu/drm/amd/powerplay/eventmgr/eventsubchains.h

@@ -96,4 +96,5 @@ extern const pem_event_action reset_boot_state_tasks[];
 extern const pem_event_action create_new_user_performance_state_tasks[];
 extern const pem_event_action initialize_thermal_controller_tasks[];
 extern const pem_event_action uninitialize_thermal_controller_tasks[];
+extern const pem_event_action set_cpu_power_state[];
 #endif /* _EVENT_SUB_CHAINS_H_ */

drivers/gpu/drm/amd/powerplay/eventmgr/eventtasks.c

@@ -248,8 +248,7 @@ int pem_task_reset_display_phys_access(struct pp_eventmgr *eventmgr, struct pem_
 
 int pem_task_set_cpu_power_state(struct pp_eventmgr *eventmgr, struct pem_event_data *event_data)
 {
-	/* TODO */
-	return 0;
+	return phm_set_cpu_power_state(eventmgr->hwmgr);
 }
 
 /*powersaving*/

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

@@ -180,7 +180,7 @@ int phm_display_configuration_changed(struct pp_hwmgr *hwmgr)
 			hwmgr->hwmgr_func->display_config_changed(hwmgr);
 	} else
 		return phm_dispatch_table(hwmgr, &hwmgr->display_configuration_changed, NULL, NULL);
-    return 0;
+	return 0;
 }
 
 int phm_notify_smc_display_config_after_ps_adjustment(struct pp_hwmgr *hwmgr)
@@ -193,7 +193,7 @@ int phm_notify_smc_display_config_after_ps_adjustment(struct pp_hwmgr *hwmgr)
 		if (NULL != hwmgr->hwmgr_func->display_config_changed)
 			hwmgr->hwmgr_func->notify_smc_display_config_after_ps_adjustment(hwmgr);
 
-    return 0;
+	return 0;
 }
 
 int phm_stop_thermal_controller(struct pp_hwmgr *hwmgr)
@@ -260,3 +260,12 @@ int phm_store_dal_configuration_data(struct pp_hwmgr *hwmgr,
 					display_config->nb_pstate_switch_disable);
 
 }
+
+int phm_set_cpu_power_state(struct pp_hwmgr *hwmgr)
+{
+	if (hwmgr != NULL && hwmgr->hwmgr_func->set_cpu_power_state != NULL)
+		return hwmgr->hwmgr_func->set_cpu_power_state(hwmgr);
+
+	return 0;
+}
+

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

@@ -356,5 +356,7 @@ 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_set_cpu_power_state(struct pp_hwmgr *hwmgr);
+
 #endif /* _HARDWARE_MANAGER_H_ */