sunxi power suspend flow

/*平台相关power manager 接口hooks*/

struct platform_suspend_ops aw_pm_ops = {
　　.valid = aw_pm_valid,
　　.begin = aw_pm_begin,
　　.prepare = aw_pm_prepare,
　　.prepare_late = aw_pm_prepare_late,
　　.enter = aw_pm_enter,
　　.wake = aw_pm_wake,
　　.finish = aw_pm_finish,
　　.end = aw_pm_end,
　　.recover = aw_pm_recover,
};

aw_pm_init-->
　　suspend_set_ops(&aw_pm_ops)-->
　　　　suspend_ops = ops;   //suspend_ops = aw_pm_ops

 

/*系统级别pm接口，suspend/resume*/

pm_suspend-->
　　suspend_devices_and_enter->
　　　　suspend_ops->begin
　　suspend_console()
　　dpm_suspend_start(PMSG_SUSPEND)
　　suspend_enter
　　suspend_ops->suspend_again
　　suspend_ops->end()
　　suspend_ops->recover()

suspend_enter-->
　　suspend_ops->prepare()
　　dpm_suspend_end(PMSG_SUSPEND)
　　suspend_ops->prepare_late()
　　disable_nonboot_cpus()
　　arch_suspend_disable_irqs()
　　syscore_suspend()
　　suspend_ops->enter(state) //suspending now
　　syscore_resume(); //resume
　　arch_suspend_enable_irqs()
　　enable_nonboot_cpus()
　　suspend_ops->wake()
　　suspend_ops->finish()

 

echo 0x843 >/sys/power/aw_pm/debug_mask
cat /proc/sys/kernel/printk
echo 7 8 1 7>/proc/sys/kernel/printk