提交 7a69af63 编写于 作者: K Kim Phillips 提交者: Paul Mackerras

[POWERPC] Add powerpc get/set_rtc_time interface to new generic rtc class

Add powerpc get/set_rtc_time interface to new generic rtc class. This
abstracts rtc chip specific code from the platform code for rtc-over-i2c
platforms.  Specific RTC chip support is now configured under
Device Drivers -> Real Time Clock. Setting time of day from the RTC
on startup is also configurable.

this time without the potentially platform breaking initcall.
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
上级 2bf11819
......@@ -1048,6 +1048,48 @@ void __init time_init(void)
set_dec(tb_ticks_per_jiffy);
}
#ifdef CONFIG_RTC_CLASS
static int set_rtc_class_time(struct rtc_time *tm)
{
int err;
struct class_device *class_dev =
rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
if (class_dev == NULL)
return -ENODEV;
err = rtc_set_time(class_dev, tm);
rtc_class_close(class_dev);
return 0;
}
static void get_rtc_class_time(struct rtc_time *tm)
{
int err;
struct class_device *class_dev =
rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
if (class_dev == NULL)
return;
err = rtc_read_time(class_dev, tm);
rtc_class_close(class_dev);
return;
}
int __init rtc_class_hookup(void)
{
ppc_md.get_rtc_time = get_rtc_class_time;
ppc_md.set_rtc_time = set_rtc_class_time;
return 0;
}
#endif /* CONFIG_RTC_CLASS */
#define FEBRUARY 2
#define STARTOFTIME 1970
......
......@@ -39,6 +39,10 @@ extern void generic_calibrate_decr(void);
extern void wakeup_decrementer(void);
extern void snapshot_timebase(void);
#ifdef CONFIG_RTC_CLASS
extern int __init rtc_class_hookup(void);
#endif
/* Some sane defaults: 125 MHz timebase, 1GHz processor */
extern unsigned long ppc_proc_freq;
#define DEFAULT_PROC_FREQ (DEFAULT_TB_FREQ * 8)
......@@ -234,4 +238,4 @@ extern void snapshot_timebases(void);
#endif
#endif /* __KERNEL__ */
#endif /* __PPC64_TIME_H */
#endif /* __POWERPC_TIME_H */
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