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/* rtc-parisc: RTC for HP PA-RISC firmware
*
* 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 parisc_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 parisc_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 parisc_rtc_ops = {
.read_time = parisc_get_time,
.set_time = parisc_set_time,
};
static int __init parisc_rtc_probe(struct platform_device *dev)
{
struct rtc_device *rtc;
rtc = rtc_device_register("rtc-parisc", &dev->dev, &parisc_rtc_ops,
THIS_MODULE);
if (IS_ERR(rtc))
return PTR_ERR(rtc);
platform_set_drvdata(dev, rtc);
return 0;
}
static int __exit parisc_rtc_remove(struct platform_device *dev)
{
struct rtc_device *rtc = platform_get_drvdata(dev);
rtc_device_unregister(rtc);
return 0;
}
static struct platform_driver parisc_rtc_driver = {
.driver = {
.name = "rtc-parisc",
.owner = THIS_MODULE,
},
.remove = __exit_p(parisc_rtc_remove),
};
static int __init parisc_rtc_init(void)
{
return platform_driver_probe(&parisc_rtc_driver, parisc_rtc_probe);
}
static void __exit parisc_rtc_fini(void)
{
platform_driver_unregister(&parisc_rtc_driver);
}
module_init(parisc_rtc_init);
module_exit(parisc_rtc_fini);
MODULE_AUTHOR("Kyle McMartin <kyle@mcmartin.ca>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("HP PA-RISC RTC driver");
MODULE_ALIAS("platform:rtc-parisc");
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