mirror of https://gitee.com/openkylin/linux.git
96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
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/*
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* inclue/asm-ppc/rtc.h
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*
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* Author: Tom Rini <trini@mvista.com>
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*
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* 2002 (c) MontaVista, Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*
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* Based on:
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* include/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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* And the old drivers/macintosh/rtc.c which was heavily based on:
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* Linux/SPARC Real Time Clock Driver
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* Copyright (C) 1996 Thomas K. Dyas (tdyas@eden.rutgers.edu)
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*
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* With additional work by Paul Mackerras and Franz Sirl.
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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/machdep.h>
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#include <asm/time.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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if (ppc_md.get_rtc_time) {
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unsigned long nowtime;
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nowtime = (ppc_md.get_rtc_time)();
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to_tm(nowtime, time);
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time->tm_year -= 1900;
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time->tm_mon -= 1; /* Make sure userland has a 0-based month */
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}
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return RTC_24H;
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}
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/* Set the current date and time in the real time clock. */
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static inline int set_rtc_time(struct rtc_time *time)
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{
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if (ppc_md.get_rtc_time) {
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unsigned long nowtime;
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nowtime = mktime(time->tm_year+1900, time->tm_mon+1,
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time->tm_mday, time->tm_hour, time->tm_min,
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time->tm_sec);
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(ppc_md.set_rtc_time)(nowtime);
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return 0;
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} else
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return -EINVAL;
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}
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static inline unsigned int get_rtc_ss(void)
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{
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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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static inline int get_rtc_pll(struct rtc_pll_info *pll)
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{
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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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return -EINVAL;
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}
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#endif /* __KERNEL__ */
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#endif /* __ASM_RTC_H__ */
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