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Commit 7a69af63 authored by Kim Phillips's avatar Kim Phillips Committed by Paul Mackerras
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[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: default avatarKim Phillips <kim.phillips@freescale.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 2bf11819

arch/powerpc/kernel/time.c

+42 −0
Original line number Original line Diff line number Diff line
@@ -1048,6 +1048,48 @@ void __init time_init(void) 
	set_dec(tb_ticks_per_jiffy);

	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 FEBRUARY	2

#define	STARTOFTIME	1970

#define	STARTOFTIME	1970

include/asm-powerpc/time.h

+5 −1
Original line number Original line Diff line number Diff line
@@ -39,6 +39,10 @@ extern void generic_calibrate_decr(void); 
extern void wakeup_decrementer(void);

extern void wakeup_decrementer(void);

extern void snapshot_timebase(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 */

/* Some sane defaults: 125 MHz timebase, 1GHz processor */

extern unsigned long ppc_proc_freq;

extern unsigned long ppc_proc_freq;

#define DEFAULT_PROC_FREQ	(DEFAULT_TB_FREQ * 8)

#define DEFAULT_PROC_FREQ	(DEFAULT_TB_FREQ * 8)
@@ -234,4 +238,4 @@ extern void snapshot_timebases(void); 
#endif

#endif





#endif /* __KERNEL__ */

#endif /* __KERNEL__ */

#endif /* __PPC64_TIME_H */
 
#endif /* __POWERPC_TIME_H */