77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
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/* asm-m68k/rtc.h
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*
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* Copyright Richard Zidlicky
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* implementation details for genrtc/q40rtc driver
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*/
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/* permission is hereby granted to copy, modify and redistribute this code
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* in terms of the GNU Library General Public License, Version 2 or later,
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* at your option.
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*/
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#ifndef _ASM_RTC_H
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#define _ASM_RTC_H
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#ifdef __KERNEL__
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#include <linux/rtc.h>
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#include <asm/errno.h>
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#include <asm/machdep.h>
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#define RTC_PIE 0x40 /* periodic interrupt enable */
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#define RTC_AIE 0x20 /* alarm interrupt enable */
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#define RTC_UIE 0x10 /* update-finished interrupt enable */
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/* some dummy definitions */
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#define RTC_BATT_BAD 0x100 /* battery bad */
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#define RTC_SQWE 0x08 /* enable square-wave output */
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#define RTC_DM_BINARY 0x04 /* all time/date values are BCD if clear */
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#define RTC_24H 0x02 /* 24 hour mode - else hours bit 7 means pm */
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#define RTC_DST_EN 0x01 /* auto switch DST - works f. USA only */
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static inline unsigned int get_rtc_time(struct rtc_time *time)
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{
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/*
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* Only the values that we read from the RTC are set. We leave
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* tm_wday, tm_yday and tm_isdst untouched. Even though the
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* RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
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* by the RTC when initially set to a non-zero value.
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*/
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mach_hwclk(0, time);
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return RTC_24H;
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}
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static inline int set_rtc_time(struct rtc_time *time)
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{
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return mach_hwclk(1, time);
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}
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static inline unsigned int get_rtc_ss(void)
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{
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if (mach_get_ss)
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return mach_get_ss();
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else{
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struct rtc_time h;
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get_rtc_time(&h);
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return h.tm_sec;
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}
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}
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static inline int get_rtc_pll(struct rtc_pll_info *pll)
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{
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if (mach_get_rtc_pll)
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return mach_get_rtc_pll(pll);
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else
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return -EINVAL;
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}
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static inline int set_rtc_pll(struct rtc_pll_info *pll)
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{
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if (mach_set_rtc_pll)
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return mach_set_rtc_pll(pll);
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else
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return -EINVAL;
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}
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#endif /* __KERNEL__ */
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#endif /* _ASM__RTC_H */
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