diff options
author | Kyle McMartin <kyle@mcmartin.ca> | 2008-07-28 23:02:13 -0400 |
---|---|---|
committer | Kyle McMartin <kyle@hera.kernel.org> | 2008-10-10 16:32:29 +0000 |
commit | deae26bf6a10e47983606f5df080b91e97650ead (patch) | |
tree | 84a8a68145d0f713d7c5a1f9e6b3b03be9b3a4c8 /arch/parisc/include/asm/rtc.h | |
parent | 6c86cb8237bf08443806089130dc108051569a93 (diff) | |
download | op-kernel-dev-deae26bf6a10e47983606f5df080b91e97650ead.zip op-kernel-dev-deae26bf6a10e47983606f5df080b91e97650ead.tar.gz |
parisc: move include/asm-parisc to arch/parisc/include/asm
Diffstat (limited to 'arch/parisc/include/asm/rtc.h')
-rw-r--r-- | arch/parisc/include/asm/rtc.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/rtc.h b/arch/parisc/include/asm/rtc.h new file mode 100644 index 0000000..099d641 --- /dev/null +++ b/arch/parisc/include/asm/rtc.h @@ -0,0 +1,131 @@ +/* + * include/asm-parisc/rtc.h + * + * Copyright 2002 Randolph CHung <tausq@debian.org> + * + * Based on: include/asm-ppc/rtc.h and the genrtc driver in the + * 2.4 parisc linux tree + */ + +#ifndef __ASM_RTC_H__ +#define __ASM_RTC_H__ + +#ifdef __KERNEL__ + +#include <linux/rtc.h> + +#include <asm/pdc.h> + +#define SECS_PER_HOUR (60 * 60) +#define SECS_PER_DAY (SECS_PER_HOUR * 24) + + +#define RTC_PIE 0x40 /* periodic interrupt enable */ +#define RTC_AIE 0x20 /* alarm interrupt enable */ +#define RTC_UIE 0x10 /* update-finished interrupt enable */ + +#define RTC_BATT_BAD 0x100 /* battery bad */ + +/* 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 */ + +# define __isleap(year) \ + ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) + +/* How many days come before each month (0-12). */ +static const unsigned short int __mon_yday[2][13] = +{ + /* Normal years. */ + { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }, + /* Leap years. */ + { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 } +}; + +static inline unsigned int get_rtc_time(struct rtc_time *wtime) +{ + struct pdc_tod tod_data; + long int days, rem, y; + const unsigned short int *ip; + + memset(wtime, 0, sizeof(*wtime)); + if (pdc_tod_read(&tod_data) < 0) + return RTC_24H | RTC_BATT_BAD; + + // most of the remainder of this function is: +// Copyright (C) 1991, 1993, 1997, 1998 Free Software Foundation, Inc. +// This was originally a part of the GNU C Library. +// It is distributed under the GPL, and was swiped from offtime.c + + + days = tod_data.tod_sec / SECS_PER_DAY; + rem = tod_data.tod_sec % SECS_PER_DAY; + + wtime->tm_hour = rem / SECS_PER_HOUR; + rem %= SECS_PER_HOUR; + wtime->tm_min = rem / 60; + wtime->tm_sec = rem % 60; + + y = 1970; + +#define DIV(a, b) ((a) / (b) - ((a) % (b) < 0)) +#define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400)) + + while (days < 0 || days >= (__isleap (y) ? 366 : 365)) + { + /* Guess a corrected year, assuming 365 days per year. */ + long int yg = y + days / 365 - (days % 365 < 0); + + /* Adjust DAYS and Y to match the guessed year. */ + days -= ((yg - y) * 365 + + LEAPS_THRU_END_OF (yg - 1) + - LEAPS_THRU_END_OF (y - 1)); + y = yg; + } + wtime->tm_year = y - 1900; + + ip = __mon_yday[__isleap(y)]; + for (y = 11; days < (long int) ip[y]; --y) + continue; + days -= ip[y]; + wtime->tm_mon = y; + wtime->tm_mday = days + 1; + + return RTC_24H; +} + +static int set_rtc_time(struct rtc_time *wtime) +{ + u_int32_t secs; + + secs = mktime(wtime->tm_year + 1900, wtime->tm_mon + 1, wtime->tm_mday, + wtime->tm_hour, wtime->tm_min, wtime->tm_sec); + + if(pdc_tod_set(secs, 0) < 0) + return -1; + else + return 0; + +} + +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__ */ |