【ロックチップ】タイマースイッチ

/* kernel/kernel/time/posix-timers.c  */
static struct k_clock posix_clocks[MAX_CLOCKS];

/* kernel/kernel/time/alarmtimer.c */
static struct rtc_device	*rtcdev;	

static struct alarm_base {
	spinlock_t		lock;
	struct timerqueue_head	timerqueue;
	ktime_t			(*gettime)(void);
	clockid_t		base_clockid;
} alarm_bases[ALARM_NUMTYPE];

定时开关机的学习：
static int __init alarmtimer_init(void)
	/* kernel/kernel/time/alarmtimer.c */
	posix_timers_register_clock(CLOCK_REALTIME_ALARM, &alarm_clock);
		posix_clocks[clock_id] = *new_clock;
	/* Initialize alarm bases */
	alarm_bases[ALARM_REALTIME].base_clockid = CLOCK_REALTIME;
	alarm_bases[ALARM_REALTIME].gettime = &ktime_get_real;
	alarm_bases[ALARM_BOOTTIME].base_clockid = CLOCK_BOOTTIME;
	alarm_bases[ALARM_BOOTTIME].gettime = &ktime_get_boottime;
  	for (i = 0; i < ALARM_NUMTYPE; i++) {
  		timerqueue_init_head(&alarm_bases[i].timerqueue);
  		spin_lock_init(&alarm_bases[i].lock);
  	}
			struct class_interface {
				struct list_head	node;
				struct class		*class;
			
				int (*add_dev)		(struct device *, struct class_interface *);
				void (*remove_dev)	(struct device *, struct class_interface *);
			};
			 static struct class_interface alarmtimer_rtc_interface = {
				.add_dev = &alarmtimer_rtc_add_device,
			};
	alarmtimer_rtc_interface_setup
		alarmtimer_rtc_interface.class = rtc_class;
		return class_interface_register(&alarmtimer_rtc_interface);
	
	platform_driver_register(&alarmtimer_driver);
	
	
	
	
	platform_device_register_simple("alarmtimer", -1, NULL, 0);
		return platform_device_register_resndata(NULL, "alarmtimer", -1,NULL, 0, NULL, 0);
			struct platform_device_info pdevinfo = {
			.parent = NULL,
			.name = "alarmtimer",
			.id = -1,
			.res = NULL,
			.num_res = 0,
			.data = NULL,
			.size_data = 0,
			.dma_mask = 0,
			};
			 platform_device_register_full(&pdevinfo);
				pdev = platform_device_alloc(pdevinfo->name, pdevinfo->id);
				
	wakeup_source_register("alarmtimer");