diff options
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/dec/time.c | 47 | ||||
| -rw-r--r-- | arch/mips/momentum/ocelot_3/setup.c | 34 | ||||
| -rw-r--r-- | arch/mips/tx4938/common/rtc_rx5c348.c | 12 |
3 files changed, 28 insertions, 65 deletions
diff --git a/arch/mips/dec/time.c b/arch/mips/dec/time.c index f17d3378e9a..74cb055d4bf 100644 --- a/arch/mips/dec/time.c +++ b/arch/mips/dec/time.c @@ -36,41 +36,13 @@ #include <asm/dec/ioasic_addrs.h> #include <asm/dec/machtype.h> - -/* - * Returns true if a clock update is in progress - */ -static inline unsigned char dec_rtc_is_updating(void) -{ - unsigned char uip; - unsigned long flags; - - spin_lock_irqsave(&rtc_lock, flags); - uip = (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP); - spin_unlock_irqrestore(&rtc_lock, flags); - return uip; -} - static unsigned long dec_rtc_get_time(void) { unsigned int year, mon, day, hour, min, sec, real_year; - int i; unsigned long flags; - /* The Linux interpretation of the DS1287 clock register contents: - * When the Update-In-Progress (UIP) flag goes from 1 to 0, the - * RTC registers show the second which has precisely just started. - * Let's hope other operating systems interpret the RTC the same way. - */ - /* read RTC exactly on falling edge of update flag */ - for (i = 0; i < 1000000; i++) /* may take up to 1 second... */ - if (dec_rtc_is_updating()) - break; - for (i = 0; i < 1000000; i++) /* must try at least 2.228 ms */ - if (!dec_rtc_is_updating()) - break; spin_lock_irqsave(&rtc_lock, flags); - /* Isn't this overkill? UIP above should guarantee consistency */ + do { sec = CMOS_READ(RTC_SECONDS); min = CMOS_READ(RTC_MINUTES); @@ -78,7 +50,16 @@ static unsigned long dec_rtc_get_time(void) day = CMOS_READ(RTC_DAY_OF_MONTH); mon = CMOS_READ(RTC_MONTH); year = CMOS_READ(RTC_YEAR); + /* + * The PROM will reset the year to either '72 or '73. + * Therefore we store the real year separately, in one + * of unused BBU RAM locations. + */ + real_year = CMOS_READ(RTC_DEC_YEAR); } while (sec != CMOS_READ(RTC_SECONDS)); + + spin_unlock_irqrestore(&rtc_lock, flags); + if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD) { sec = BCD2BIN(sec); min = BCD2BIN(min); @@ -87,13 +68,7 @@ static unsigned long dec_rtc_get_time(void) mon = BCD2BIN(mon); year = BCD2BIN(year); } - /* - * The PROM will reset the year to either '72 or '73. - * Therefore we store the real year separately, in one - * of unused BBU RAM locations. - */ - real_year = CMOS_READ(RTC_DEC_YEAR); - spin_unlock_irqrestore(&rtc_lock, flags); + year += real_year - 72 + 2000; return mktime(year, mon, day, hour, min, sec); diff --git a/arch/mips/momentum/ocelot_3/setup.c b/arch/mips/momentum/ocelot_3/setup.c index 969612eab8a..370e75d0e75 100644 --- a/arch/mips/momentum/ocelot_3/setup.c +++ b/arch/mips/momentum/ocelot_3/setup.c @@ -58,6 +58,7 @@ #include <linux/bootmem.h> #include <linux/mv643xx.h> #include <linux/pm.h> +#include <linux/bcd.h> #include <asm/time.h> #include <asm/page.h> @@ -131,9 +132,6 @@ void setup_wired_tlb_entries(void) add_wired_entry(ENTRYLO(0xfc000000), ENTRYLO(0xfd000000), (signed)0xfc000000, PM_16M); } -#define CONV_BCD_TO_BIN(val) (((val) & 0xf) + (((val) >> 4) * 10)) -#define CONV_BIN_TO_BCD(val) (((val) % 10) + (((val) / 10) << 4)) - unsigned long m48t37y_get_time(void) { unsigned int year, month, day, hour, min, sec; @@ -143,16 +141,16 @@ unsigned long m48t37y_get_time(void) /* stop the update */ rtc_base[0x7ff8] = 0x40; - year = CONV_BCD_TO_BIN(rtc_base[0x7fff]); - year += CONV_BCD_TO_BIN(rtc_base[0x7ff1]) * 100; + year = BCD2BIN(rtc_base[0x7fff]); + year += BCD2BIN(rtc_base[0x7ff1]) * 100; - month = CONV_BCD_TO_BIN(rtc_base[0x7ffe]); + month = BCD2BIN(rtc_base[0x7ffe]); - day = CONV_BCD_TO_BIN(rtc_base[0x7ffd]); + day = BCD2BIN(rtc_base[0x7ffd]); - hour = CONV_BCD_TO_BIN(rtc_base[0x7ffb]); - min = CONV_BCD_TO_BIN(rtc_base[0x7ffa]); - sec = CONV_BCD_TO_BIN(rtc_base[0x7ff9]); + hour = BCD2BIN(rtc_base[0x7ffb]); + min = BCD2BIN(rtc_base[0x7ffa]); + sec = BCD2BIN(rtc_base[0x7ff9]); /* start the update */ rtc_base[0x7ff8] = 0x00; @@ -175,22 +173,22 @@ int m48t37y_set_time(unsigned long sec) rtc_base[0x7ff8] = 0x80; /* year */ - rtc_base[0x7fff] = CONV_BIN_TO_BCD(tm.tm_year % 100); - rtc_base[0x7ff1] = CONV_BIN_TO_BCD(tm.tm_year / 100); + rtc_base[0x7fff] = BIN2BCD(tm.tm_year % 100); + rtc_base[0x7ff1] = BIN2BCD(tm.tm_year / 100); /* month */ - rtc_base[0x7ffe] = CONV_BIN_TO_BCD(tm.tm_mon); + rtc_base[0x7ffe] = BIN2BCD(tm.tm_mon); /* day */ - rtc_base[0x7ffd] = CONV_BIN_TO_BCD(tm.tm_mday); + rtc_base[0x7ffd] = BIN2BCD(tm.tm_mday); /* hour/min/sec */ - rtc_base[0x7ffb] = CONV_BIN_TO_BCD(tm.tm_hour); - rtc_base[0x7ffa] = CONV_BIN_TO_BCD(tm.tm_min); - rtc_base[0x7ff9] = CONV_BIN_TO_BCD(tm.tm_sec); + rtc_base[0x7ffb] = BIN2BCD(tm.tm_hour); + rtc_base[0x7ffa] = BIN2BCD(tm.tm_min); + rtc_base[0x7ff9] = BIN2BCD(tm.tm_sec); /* day of week -- not really used, but let's keep it up-to-date */ - rtc_base[0x7ffc] = CONV_BIN_TO_BCD(tm.tm_wday + 1); + rtc_base[0x7ffc] = BIN2BCD(tm.tm_wday + 1); /* disable writing */ rtc_base[0x7ff8] = 0x00; diff --git a/arch/mips/tx4938/common/rtc_rx5c348.c b/arch/mips/tx4938/common/rtc_rx5c348.c index f74295f2852..07f782fc072 100644 --- a/arch/mips/tx4938/common/rtc_rx5c348.c +++ b/arch/mips/tx4938/common/rtc_rx5c348.c @@ -14,6 +14,7 @@ #include <linux/string.h> #include <linux/rtc.h> #include <linux/time.h> +#include <linux/bcd.h> #include <asm/time.h> #include <asm/tx4938/spi.h> @@ -77,17 +78,6 @@ spi_rtc_io(unsigned char *inbuf, unsigned char *outbuf, unsigned int count) inbufs, incounts, outbufs, outcounts, 0); } -/* - * Conversion between binary and BCD. - */ -#ifndef BCD_TO_BIN -#define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10) -#endif - -#ifndef BIN_TO_BCD -#define BIN_TO_BCD(val) ((val)=(((val)/10)<<4) + (val)%10) -#endif - /* RTC-dependent code for time.c */ static int |