int (*ioctl)(struct device *, unsigned int, unsigned long); int (*read_time)(struct device *, struct rtc_time *); int (*set_time)(struct device *, struct rtc_time *); int (*read_alarm)(struct device *, struct rtc_wkalrm *); int (*set_alarm)(struct device *, struct rtc_wk...
int (*set_time)(struct device *, struct rtc_time *); int (*read_alarm)(struct device *, struct rtc_wkalrm *); int (*set_alarm)(struct device *, struct rtc_wkalrm *); int (*proc)(struct device *, struct seq_file *); int (*set_mmss)(struct device *, unsigned long secs);...
structrtc_class_ops{int(*open)(structdevice *);void(*release)(structdevice *);int(*ioctl)(structdevice *,unsignedint,unsignedlong);int(*read_time)(structdevice *,structrtc_time *);int(*set_time)(structdevice *,structrtc_time *);int(*read_alarm)(structdevice *,structrtc_wkalrm *);in...
int (*set_time)(struct device *,struct rtc_time *); int (*read_alarm)(struct device *,struct rtc_wkalrm *); int (*set_alarm)(struct device *,struct rtc_wkalrm *); int (*proc)(struct device *,struct seq_file *); int (*set_mmss)(struct device *, unsignedlong secs); int (...
struct rtc_device *rtc_device_register( const char *name, //RTC时钟名称 struct device *dev, //设备指针。该指针需要需要通过平台设备获取。 const struct rtc_class_ops *ops, //rtc文件操作集合 struct module *owner) //驱动所有者。填: THIS_MODULE ...
3. 将系统时间同步到 RTC,用于设置时间 [root@XiaoLong /]# hwclock -w 4. 查看 RTC 的信息 [root@XiaoLong /]# cat /proc/driver/rtc rtc_time : 00:09:27 rtc_date : 2016-05-01 alrm_time : 23:24:07 alrm_date : 2016-05-01
1、rtc_class_ops 填充 驱动主要工作是填充 rtc_class_ops结构体,结构体描述了RTC芯片能够提供的所有操作方式: structrtc_class_ops{int(*open)(struct device *);void(*release)(struct device *);int(*ioctl)(struct device *,unsignedint,unsignedlong);int(*read_time)(struct device *, struct rtc_tim...
在使用rtc_time_to_tm函数时,首先需要通过ioctl系统调用打开RTC设备文件,然后调用rtc_time_to_tm函数将RTC时间转换为tm结构体格式。下面是一个示例代码: ``` #include #include #include int main() { int fd; struct rtc_time rtc_tm; struct tm tm_time; ...
timekeeper在初始化的过程中,读取当前的RTC值和clocksource的值,来初始化xtime、monotonic time、raw time、boot time,以及各种offset。1234567891011121314151617181920212223242526272829303132333435363738394041424344454647 void __init timekeeping_init(void){ struct timekeeper *tk = &tk_core...
struct rtc_class_ops { int (*open)(struct device *); void (*release)(struct device *); int (*ioctl)(struct device *, unsigned int, unsigned long); int (*read_time)(struct device *, struct rtc_time *); int (*set_time)(struct device *, struct rtc_time *); int (*read_alarm...