1 /* rtc-generic: RTC driver using the generic RTC abstraction
3 * Copyright (C) 2008 Kyle McMartin <kyle@mcmartin.ca>
6 #include <linux/kernel.h>
7 #include <linux/module.h>
8 #include <linux/time.h>
9 #include <linux/platform_device.h>
10 #include <linux/rtc.h>
12 #if defined(CONFIG_M68K) || defined(CONFIG_PPC)
15 static int generic_get_time(struct device *dev, struct rtc_time *tm)
17 unsigned int ret = get_rtc_time(tm);
19 if (ret & RTC_BATT_BAD)
22 return rtc_valid_tm(tm);
25 static int generic_set_time(struct device *dev, struct rtc_time *tm)
27 if (set_rtc_time(tm) < 0)
33 static const struct rtc_class_ops generic_rtc_ops = {
34 .read_time = generic_get_time,
35 .set_time = generic_set_time,
38 #define generic_rtc_ops *(struct rtc_class_ops*)NULL
41 static int __init generic_rtc_probe(struct platform_device *dev)
43 struct rtc_device *rtc;
44 const struct rtc_class_ops *ops;
46 ops = dev_get_platdata(&dev->dev);
48 ops = &generic_rtc_ops;
50 rtc = devm_rtc_device_register(&dev->dev, "rtc-generic",
55 platform_set_drvdata(dev, rtc);
60 static struct platform_driver generic_rtc_driver = {
62 .name = "rtc-generic",
66 module_platform_driver_probe(generic_rtc_driver, generic_rtc_probe);
68 MODULE_AUTHOR("Kyle McMartin <kyle@mcmartin.ca>");
69 MODULE_LICENSE("GPL");
70 MODULE_DESCRIPTION("Generic RTC driver");
71 MODULE_ALIAS("platform:rtc-generic");