A generic RTC driver [2/3]
PATCH RESEND 1/1 A generic RTC driver [2/3]
This is part 2 of 3 of the genrtc driver work. This is the PPC portion of the patch, which creates include/asm-ppc/rtc.h. This has been in the PPC bitkeeper tree for over a month now. I can have Paul Mackerras send this to you instead, if you prefer.
Signature · 95 lines
Tom Rini (TR1265) http://gate.crashing.org/~trini/ --- /dev/null 1969-12-31 17:00:00.000000000 -0700 +++ linux-2.5/include/asm-ppc/rtc.h 2002-07-23 09:20:47.000000000 -0700 @@ -0,0 +1,89 @@ +/* + * inclue/asm-ppc/rtc.h + * + * Copyright 2002 MontaVista Software Inc. + * Author: Tom Rini <[email protected]> + * + * Based on: + * include/asm-m68k/rtc.h + * + * Copyright Richard Zidlicky + * implementation details for genrtc/q40rtc driver + * + * And the old drivers/macintosh/rtc.c which was heavily based on: + * Linux/SPARC Real Time Clock Driver + * Copyright (C) 1996 Thomas K. Dyas ([email protected]) + * + * With additional work by Paul Mackerras and Franz Sirl. + */ +/* Please read the COPYING file for all license details. */ + +#ifndef __ASM_RTC_H__ +#define __ASM_RTC_H__ + +#ifdef __KERNEL__ + +#include <linux/rtc.h> + +#include <asm/machdep.h> +#include <asm/time.h> + +#define RTC_PIE 0x40 /* periodic interrupt enable */ +#define RTC_AIE 0x20 /* alarm interrupt enable */ +#define RTC_UIE 0x10 /* update-finished interrupt enable */ + +extern void gen_rtc_interrupt(unsigned long); + +/* some dummy definitions */ +#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 */ + +static inline void get_rtc_time(struct rtc_time *time) +{ + if (ppc_md.get_rtc_time) { + unsigned long nowtime; + + nowtime = (ppc_md.get_rtc_time)(); + + to_tm(nowtime, time); + + time->tm_year -= 1900; + time->tm_mon -= 1; /* Make sure userland has a 0-based month */ + } +} + +/* Set the current date and time in the real time clock. */ +static inline void set_rtc_time(struct rtc_time *time) +{ + if (ppc_md.get_rtc_time) { + unsigned long nowtime; + + nowtime = mktime(time->tm_year+1900, time->tm_mon+1, + time->tm_mday, time->tm_hour, time->tm_min, + time->tm_sec); + + (ppc_md.set_rtc_time)(nowtime); + } +} + +static inline unsigned int get_rtc_ss(void) +{ + struct rtc_time h; + + get_rtc_time(&h); + return h.tm_sec; +} + +static inline int get_rtc_pll(struct rtc_pll_info *pll) +{ + return -EINVAL; +} +static inline int set_rtc_pll(struct rtc_pll_info *pll) +{ + return -EINVAL; +} + +#endif /* __KERNEL__ */ +#endif /* __ASM_RTC_H__ */