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sh: rtc-generic support.

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This adds rtc-generic support for SUPERH32.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2009-04-27 17:34:39 +09:00
parent 5be7c0a4d3
commit 47c8a08bbe
4 changed files with 36 additions and 1 deletions
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1
arch/sh/Kconfig
View file

@ -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"

11
arch/sh/include/asm/rtc.h
View file

@ -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 {

23
arch/sh/kernel/time_32.c
View file

@ -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)
{

2
drivers/rtc/Kconfig
View file

@ -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