Linux Device Drivers Development

RTC API

An RTC device is represented in the kernel as an instance of the struct rtc_device structure. Unlike other kernel framework device registrations (where the device is given as a parameter to the registering function), the RTC device is built by the core, and is registered before the rtc_device structure gets returned to the driver. The device is built and registered with the kernel using the rtc_device_register() function:

struct rtc_device *rtc_device_register(const char *name,                              struct device *dev, 
                             const struct rtc_class_ops *ops, 
                             struct module *owner) 

The meanings of the parameters of the are as follows:

• name: This is your RTC device name. It could be the chip's name; for example, ds1343.
• dev: This is the parent device, used for ...