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Commit 47c8a08b authored by Paul Mundt's avatar Paul Mundt
Browse files

sh: rtc-generic support. 



This adds rtc-generic support for SUPERH32.

Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 5be7c0a4

arch/sh/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ config SUPERH32 
	select HAVE_DYNAMIC_FTRACE

	select HAVE_ARCH_KGDB

	select ARCH_HIBERNATION_POSSIBLE if MMU

	select RTC_LIB



config SUPERH64

	def_bool ARCH = "sh64"

arch/sh/include/asm/rtc.h

+11 −0
Original line number Diff line number Diff line
@@ -6,6 +6,17 @@ extern void (*board_time_init)(void); 
extern void (*rtc_sh_get_time)(struct timespec *);

extern int (*rtc_sh_set_time)(const time_t);



/* some dummy definitions */

#define RTC_BATT_BAD 0x100	/* battery bad */

#define RTC_SQWE 0x08		/* enable square-wave output */

#define RTC_DM_BINARY 0x04	/* all time/date values are BCD if clear */

#define RTC_24H 0x02		/* 24 hour mode - else hours bit 7 means pm */

#define RTC_DST_EN 0x01	        /* auto switch DST - works f. USA only */



struct rtc_time;

unsigned int get_rtc_time(struct rtc_time *);

int set_rtc_time(struct rtc_time *);



#define RTC_CAP_4_DIGIT_YEAR	(1 << 0)



struct sh_rtc_platform_info {

arch/sh/kernel/time_32.c

+23 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 
#include <linux/mc146818rtc.h>	/* for rtc_lock */

#include <linux/platform_device.h>

#include <linux/smp.h>

#include <linux/rtc.h>

#include <asm/clock.h>

#include <asm/rtc.h>

#include <asm/timer.h>
@@ -45,6 +46,28 @@ static int null_rtc_set_time(const time_t secs) 
void (*rtc_sh_get_time)(struct timespec *) = null_rtc_get_time;

int (*rtc_sh_set_time)(const time_t) = null_rtc_set_time;



unsigned int get_rtc_time(struct rtc_time *tm)

{

	if (rtc_sh_get_time != null_rtc_get_time) {

		struct timespec tv;



		rtc_sh_get_time(&tv);

		rtc_time_to_tm(tv.tv_sec, tm);

	}



	return RTC_24H;

}

EXPORT_SYMBOL(get_rtc_time);



int set_rtc_time(struct rtc_time *tm)

{

	unsigned long secs;



	rtc_tm_to_time(tm, &secs);

	return rtc_sh_set_time(secs);

}

EXPORT_SYMBOL(set_rtc_time);



#ifndef CONFIG_GENERIC_TIME

void do_gettimeofday(struct timeval *tv)

{

drivers/rtc/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -692,7 +692,7 @@ config RTC_DRV_GENERIC 
	tristate "Generic RTC support"

	# Please consider writing a new RTC driver instead of using the generic

	# RTC abstraction

	depends on PARISC || M68K || PPC

	depends on PARISC || M68K || PPC || SUPERH32

	help

	  Say Y or M here to enable RTC support on systems using the generic

	  RTC abstraction. If you do not know what you are doing, you should