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drivers/rtc/rtc-generic.c
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/* rtc-generic: RTC driver using the generic RTC abstraction * * Copyright (C) 2008 Kyle McMartin <kyle@mcmartin.ca> */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/time.h> #include <linux/platform_device.h> #include <linux/rtc.h> #include <asm/rtc.h> static int generic_get_time(struct device *dev, struct rtc_time *tm) { unsigned int ret = get_rtc_time(tm); if (ret & RTC_BATT_BAD) return -EOPNOTSUPP; return rtc_valid_tm(tm); } static int generic_set_time(struct device *dev, struct rtc_time *tm) { if (set_rtc_time(tm) < 0) return -EOPNOTSUPP; return 0; } static const struct rtc_class_ops generic_rtc_ops = { .read_time = generic_get_time, .set_time = generic_set_time, }; static int __init generic_rtc_probe(struct platform_device *dev) { struct rtc_device *rtc; |
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rtc = devm_rtc_device_register(&dev->dev, "rtc-generic", &generic_rtc_ops, THIS_MODULE); |
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if (IS_ERR(rtc)) return PTR_ERR(rtc); platform_set_drvdata(dev, rtc); return 0; } |
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static struct platform_driver generic_rtc_driver = { .driver = { .name = "rtc-generic", .owner = THIS_MODULE, }, |
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}; |
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module_platform_driver_probe(generic_rtc_driver, generic_rtc_probe); |
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MODULE_AUTHOR("Kyle McMartin <kyle@mcmartin.ca>"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Generic RTC driver"); MODULE_ALIAS("platform:rtc-generic"); |