But in a few places, it's used as:
if ( ... )
y = BIN_TO_BCD(x);
The following creates include/linux/bcd.h which has the 'normal'
BIN_TO_BCD macros, as well as CONVERT_{BIN,BCD}_TO_{BCD,BIN},
which are for the second case. This patch removes all other defines,
adds <linux/bcd.h> to <linux/mc146818rtc.h> for compatibility, and adds
<linux/bcd.h> directly to anything which was implicitly including
<linux/mc146818rtc.h> before.
This was originally sent back on August 12th, without any comment.
-- Tom Rini (TR1265) http://gate.crashing.org/~trini/===== arch/arm/kernel/time.c 1.8 vs edited ===== --- 1.8/arch/arm/kernel/time.c Sat Aug 3 06:39:48 2002 +++ edited/arch/arm/kernel/time.c Tue Sep 17 11:01:55 2002 @@ -47,14 +47,6 @@ /* change this if you have some constant time drift */ #define USECS_PER_JIFFY (1000000/HZ) -#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 - static int dummy_set_rtc(void) { return 0; ===== arch/cris/drivers/ds1302.c 1.3 vs edited ===== --- 1.3/arch/cris/drivers/ds1302.c Tue Feb 5 08:24:37 2002 +++ edited/arch/cris/drivers/ds1302.c Tue Sep 17 11:01:55 2002 @@ -97,6 +97,7 @@ #include <linux/module.h> #include <linux/miscdevice.h> #include <linux/delay.h> +#include <linux/bcd.h> #include <asm/uaccess.h> #include <asm/system.h> ===== arch/cris/kernel/time.c 1.6 vs edited ===== --- 1.6/arch/cris/kernel/time.c Sun Jun 16 17:39:47 2002 +++ edited/arch/cris/kernel/time.c Tue Sep 17 11:01:55 2002 @@ -32,6 +32,7 @@ #include <linux/interrupt.h> #include <linux/time.h> #include <linux/delay.h> +#include <linux/bcd.h> #include <asm/segment.h> #include <asm/io.h> ===== arch/m68k/sun3x/time.c 1.3 vs edited ===== --- 1.3/arch/m68k/sun3x/time.c Sun Feb 24 05:50:59 2002 +++ edited/arch/m68k/sun3x/time.c Tue Sep 17 11:01:55 2002 @@ -11,6 +11,7 @@ #include <linux/kernel_stat.h> #include <linux/interrupt.h> #include <linux/rtc.h> +#include <linux/bcd.h> #include <asm/irq.h> #include <asm/io.h> @@ -36,9 +37,6 @@ #define C_SIGN 0x20 #define C_CALIB 0x1f -#define BCD_TO_BIN(val) (((val)&15) + ((val)>>4)*10) -#define BIN_TO_BCD(val) (((val/10) << 4) | (val % 10)) - int sun3x_hwclk(int set, struct rtc_time *t) { volatile struct mostek_dt *h = @@ -49,23 +47,23 @@ if(set) { h->csr |= C_WRITE; - h->sec = BIN_TO_BCD(t->tm_sec); - h->min = BIN_TO_BCD(t->tm_min); - h->hour = BIN_TO_BCD(t->tm_hour); - h->wday = BIN_TO_BCD(t->tm_wday); - h->mday = BIN_TO_BCD(t->tm_mday); - h->month = BIN_TO_BCD(t->tm_mon); - h->year = BIN_TO_BCD(t->tm_year); + h->sec = CONVERT_BIN_TO_BCD(t->tm_sec); + h->min = CONVERT_BIN_TO_BCD(t->tm_min); + h->hour = CONVERT_BIN_TO_BCD(t->tm_hour); + h->wday = CONVERT_BIN_TO_BCD(t->tm_wday); + h->mday = CONVERT_BIN_TO_BCD(t->tm_mday); + h->month = CONVERT_BIN_TO_BCD(t->tm_mon); + h->year = CONVERT_BIN_TO_BCD(t->tm_year); h->csr &= ~C_WRITE; } else { h->csr |= C_READ; - t->tm_sec = BCD_TO_BIN(h->sec); - t->tm_min = BCD_TO_BIN(h->min); - t->tm_hour = BCD_TO_BIN(h->hour); - t->tm_wday = BCD_TO_BIN(h->wday); - t->tm_mday = BCD_TO_BIN(h->mday); - t->tm_mon = BCD_TO_BIN(h->month); - t->tm_year = BCD_TO_BIN(h->year); + t->tm_sec = CONVERT_BCD_TO_BIN(h->sec); + t->tm_min = CONVERT_BCD_TO_BIN(h->min); + t->tm_hour = CONVERT_BCD_TO_BIN(h->hour); + t->tm_wday = CONVERT_BCD_TO_BIN(h->wday); + t->tm_mday = CONVERT_BCD_TO_BIN(h->mday); + t->tm_mon = CONVERT_BCD_TO_BIN(h->month); + t->tm_year = CONVERT_BCD_TO_BIN(h->year); h->csr &= ~C_READ; } ===== arch/mips/ddb5xxx/common/rtc_ds1386.c 1.1 vs edited ===== --- 1.1/arch/mips/ddb5xxx/common/rtc_ds1386.c Tue Feb 5 13:17:17 2002 +++ edited/arch/mips/ddb5xxx/common/rtc_ds1386.c Tue Sep 17 11:01:55 2002 @@ -20,6 +20,7 @@ #include <linux/types.h> #include <linux/time.h> +#include <linux/bcd.h> #include <asm/time.h> #include <asm/addrspace.h> @@ -28,12 +29,6 @@ #define EPOCH 2000 -#undef BCD_TO_BIN -#define BCD_TO_BIN(val) (((val)&15) + ((val)>>4)*10) - -#undef BIN_TO_BCD -#define BIN_TO_BCD(val) ((((val)/10)<<4) + (val)%10) - #define READ_RTC(x) *(volatile unsigned char*)(rtc_base+x) #define WRITE_RTC(x, y) *(volatile unsigned char*)(rtc_base+x) = y @@ -52,11 +47,11 @@ WRITE_RTC(0xB, byte); /* read time data */ - year = BCD_TO_BIN(READ_RTC(0xA)) + EPOCH; - month = BCD_TO_BIN(READ_RTC(0x9) & 0x1f); - day = BCD_TO_BIN(READ_RTC(0x8)); - minute = BCD_TO_BIN(READ_RTC(0x2)); - second = BCD_TO_BIN(READ_RTC(0x1)); + year = CONVERT_BCD_TO_BIN(READ_RTC(0xA)) + EPOCH; + month = CONVERT_BCD_TO_BIN(READ_RTC(0x9) & 0x1f); + day = CONVERT_BCD_TO_BIN(READ_RTC(0x8)); + minute = CONVERT_BCD_TO_BIN(READ_RTC(0x2)); + second = CONVERT_BCD_TO_BIN(READ_RTC(0x1)); /* hour is special - deal with it later */ temp = READ_RTC(0x4); @@ -68,11 +63,11 @@ /* calc hour */ if (temp & 0x40) { /* 12 hour format */ - hour = BCD_TO_BIN(temp & 0x1f); + hour = CONVERT_BCD_TO_BIN(temp & 0x1f); if (temp & 0x20) hour += 12; /* PM */ } else { /* 24 hour format */ - hour = BCD_TO_BIN(temp & 0x3f); + hour = CONVERT_BCD_TO_BIN(temp & 0x3f); } return mktime(year, month, day, hour, minute, second); @@ -95,19 +90,19 @@ to_tm(t, &tm); /* check each field one by one */ - year = BIN_TO_BCD(tm.tm_year - EPOCH); + year = CONVERT_BIN_TO_BCD(tm.tm_year - EPOCH); if (year != READ_RTC(0xA)) { WRITE_RTC(0xA, year); } temp = READ_RTC(0x9); - month = BIN_TO_BCD(tm.tm_mon); + month = CONVERT_BIN_TO_BCD(tm.tm_mon); if (month != (temp & 0x1f)) { WRITE_RTC( 0x9, (month & 0x1f) | (temp & ~0x1f) ); } - day = BIN_TO_BCD(tm.tm_mday); + day = CONVERT_BIN_TO_BCD(tm.tm_mday); if (day != READ_RTC(0x8)) { WRITE_RTC(0x8, day); } @@ -117,22 +112,22 @@ /* 12 hour format */ hour = 0x40; if (tm.tm_hour > 12) { - hour |= 0x20 | (BIN_TO_BCD(hour-12) & 0x1f); + hour |= 0x20 | (CONVERT_BIN_TO_BCD(hour-12) & 0x1f); } else { - hour |= BIN_TO_BCD(tm.tm_hour); + hour |= CONVERT_BIN_TO_BCD(tm.tm_hour); } } else { /* 24 hour format */ - hour = BIN_TO_BCD(tm.tm_hour) & 0x3f; + hour = CONVERT_BIN_TO_BCD(tm.tm_hour) & 0x3f; } if (hour != temp) WRITE_RTC(0x4, hour); - minute = BIN_TO_BCD(tm.tm_min); + minute = CONVERT_BIN_TO_BCD(tm.tm_min); if (minute != READ_RTC(0x2)) { WRITE_RTC(0x2, minute); } - second = BIN_TO_BCD(tm.tm_sec); + second = CONVERT_BIN_TO_BCD(tm.tm_sec); if (second != READ_RTC(0x1)) { WRITE_RTC(0x1, second); } ===== arch/mips64/sgi-ip27/ip27-rtc.c 1.4 vs edited ===== --- 1.4/arch/mips64/sgi-ip27/ip27-rtc.c Thu May 23 09:06:16 2002 +++ edited/arch/mips64/sgi-ip27/ip27-rtc.c Tue Sep 17 11:01:55 2002 @@ -35,6 +35,7 @@ #include <linux/poll.h> #include <linux/proc_fs.h> #include <linux/smp_lock.h> +#include <linux/bcd.h> #include <asm/m48t35.h> #include <asm/sn/ioc3.h> ===== arch/mips64/sgi-ip27/ip27-timer.c 1.2 vs edited ===== --- 1.2/arch/mips64/sgi-ip27/ip27-timer.c Tue Feb 5 00:45:04 2002 +++ edited/arch/mips64/sgi-ip27/ip27-timer.c Tue Sep 17 11:01:55 2002 @@ -11,6 +11,7 @@ #include <linux/param.h> #include <linux/timex.h> #include <linux/mm.h> +#include <linux/bcd.h> #include <asm/pgtable.h> #include <asm/sgialib.h> ===== arch/ppc/iSeries/mf.c 1.2 vs edited ===== --- 1.2/arch/ppc/iSeries/mf.c Sun Jun 2 23:49:59 2002 +++ edited/arch/ppc/iSeries/mf.c Tue Sep 17 11:01:55 2002 @@ -40,6 +40,7 @@ #include <asm/iSeries/iSeries_proc.h> #include <asm/uaccess.h> #include <linux/pci.h> +#include <linux/bcd.h> /* ===== arch/ppc/kernel/todc_time.c 1.1 vs edited ===== --- 1.1/arch/ppc/kernel/todc_time.c Sun Feb 10 04:20:03 2002 +++ edited/arch/ppc/kernel/todc_time.c Tue Sep 17 11:01:55 2002 @@ -19,6 +19,7 @@ #include <linux/kernel.h> #include <linux/time.h> #include <linux/timex.h> +#include <linux/bcd.h> #include <asm/machdep.h> #include <asm/io.h> ===== arch/ppc/platforms/gemini_setup.c 1.11 vs edited ===== --- 1.11/arch/ppc/platforms/gemini_setup.c Mon May 27 08:05:50 2002 +++ edited/arch/ppc/platforms/gemini_setup.c Tue Sep 17 11:01:55 2002 @@ -27,6 +27,7 @@ #include <linux/irq.h> #include <linux/seq_file.h> #include <linux/root_dev.h> +#include <linux/bcd.h> #include <asm/system.h> #include <asm/pgtable.h> ===== arch/ppc/platforms/prep_time.c 1.6 vs edited ===== --- 1.6/arch/ppc/platforms/prep_time.c Sun Feb 10 04:41:25 2002 +++ edited/arch/ppc/platforms/prep_time.c Tue Sep 17 11:01:55 2002 @@ -22,6 +22,7 @@ #include <linux/timex.h> #include <linux/kernel_stat.h> #include <linux/init.h> +#include <linux/bcd.h> #include <asm/sections.h> #include <asm/segment.h> ===== arch/ppc64/kernel/mf.c 1.2 vs edited ===== --- 1.2/arch/ppc64/kernel/mf.c Wed Apr 24 21:46:36 2002 +++ edited/arch/ppc64/kernel/mf.c Tue Sep 17 11:01:55 2002 @@ -40,6 +40,7 @@ #include <asm/iSeries/iSeries_proc.h> #include <asm/uaccess.h> #include <linux/pci.h> +#include <linux/bcd.h> extern struct pci_dev * iSeries_vio_dev; ===== arch/sh/kernel/rtc.c 1.5 vs edited ===== --- 1.5/arch/sh/kernel/rtc.c Tue Feb 5 08:24:41 2002 +++ edited/arch/sh/kernel/rtc.c Tue Sep 17 11:01:55 2002 @@ -9,17 +9,10 @@ #include <linux/kernel.h> #include <linux/sched.h> #include <linux/time.h> +#include <linux/bcd.h> #include <asm/io.h> #include <asm/rtc.h> - -#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 void sh_rtc_gettimeofday(struct timeval *tv) { ===== arch/sparc64/kernel/time.c 1.14 vs edited ===== --- 1.14/arch/sparc64/kernel/time.c Fri Sep 13 14:41:56 2002 +++ edited/arch/sparc64/kernel/time.c Tue Sep 17 11:01:56 2002 @@ -316,14 +316,6 @@ return (data1 == data2); /* Was the write blocked? */ } -#ifndef BCD_TO_BIN -#define BCD_TO_BIN(val) (((val)&15) + ((val)>>4)*10) -#endif - -#ifndef BIN_TO_BCD -#define BIN_TO_BCD(val) ((((val)/10)<<4) + (val)%10) -#endif - /* Probe for the real time clock chip. */ static void __init set_system_time(void) { ===== drivers/scsi/sr_vendor.c 1.8 vs edited ===== --- 1.8/drivers/scsi/sr_vendor.c Wed Sep 4 14:24:17 2002 +++ edited/drivers/scsi/sr_vendor.c Tue Sep 17 11:01:57 2002 @@ -37,6 +37,7 @@ #include <linux/config.h> #include <linux/errno.h> #include <linux/string.h> +#include <linux/bcd.h> #include <linux/blk.h> #include "scsi.h" @@ -147,8 +148,6 @@ /* This function gets called after a media change. Checks if the CD is multisession, asks for offset etc. */ -#define BCD_TO_BIN(x) ((((int)x & 0xf0) >> 4)*10 + ((int)x & 0x0f)) - int sr_cd_check(struct cdrom_device_info *cdi) { Scsi_CD *cd = cdi->handle; @@ -213,9 +212,9 @@ no_multi = 1; break; } - min = BCD_TO_BIN(buffer[15]); - sec = BCD_TO_BIN(buffer[16]); - frame = BCD_TO_BIN(buffer[17]); + min = CONVERT_BCD_TO_BIN(buffer[15]); + sec = CONVERT_BCD_TO_BIN(buffer[16]); + frame = CONVERT_BCD_TO_BIN(buffer[17]); sector = min * CD_SECS * CD_FRAMES + sec * CD_FRAMES + frame; break; } @@ -240,9 +239,9 @@ } if (rc != 0) break; - min = BCD_TO_BIN(buffer[1]); - sec = BCD_TO_BIN(buffer[2]); - frame = BCD_TO_BIN(buffer[3]); + min = CONVERT_BCD_TO_BIN(buffer[1]); + sec = CONVERT_BCD_TO_BIN(buffer[2]); + frame = CONVERT_BCD_TO_BIN(buffer[3]); sector = min * CD_SECS * CD_FRAMES + sec * CD_FRAMES + frame; if (sector) sector -= CD_MSF_OFFSET; ===== drivers/sgi/char/ds1286.c 1.4 vs edited ===== --- 1.4/drivers/sgi/char/ds1286.c Tue Feb 5 00:44:52 2002 +++ edited/drivers/sgi/char/ds1286.c Tue Sep 17 11:01:57 2002 @@ -36,6 +36,7 @@ #include <linux/poll.h> #include <linux/rtc.h> #include <linux/spinlock.h> +#include <linux/bcd.h> #include <asm/ds1286.h> #include <asm/io.h> ===== include/asm-cris/rtc.h 1.2 vs edited ===== --- 1.2/include/asm-cris/rtc.h Tue Feb 5 00:40:14 2002 +++ edited/include/asm-cris/rtc.h Tue Sep 17 11:01:57 2002 @@ -39,11 +39,6 @@ #define RTC_INIT() (-1) #endif -/* conversions to and from the stupid RTC internal format */ - -#define BCD_TO_BIN(x) x = (((x & 0xf0) >> 3) * 5 + (x & 0xf)) -#define BIN_TO_BCD(x) x = (x % 10) | ((x / 10) << 4) - /* * The struct used to pass data via the following ioctl. Similar to the * struct tm in <time.h>, but it needs to be here so that the kernel ===== include/asm-mips/ds1286.h 1.1 vs edited ===== --- 1.1/include/asm-mips/ds1286.h Tue Feb 5 10:39:45 2002 +++ edited/include/asm-mips/ds1286.h Tue Sep 17 11:01:57 2002 @@ -57,15 +57,4 @@ #define RTC_IPSW 0x40 #define RTC_TE 0x80 -/* - * 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 - #endif /* _ASM_DS1286_h */ ===== include/asm-mips64/ds1286.h 1.2 vs edited ===== --- 1.2/include/asm-mips64/ds1286.h Tue Feb 5 00:45:05 2002 +++ edited/include/asm-mips64/ds1286.h Tue Sep 17 11:01:57 2002 @@ -56,15 +56,4 @@ #define RTC_IPSW 0x40 #define RTC_TE 0x80 -/* - * 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 - #endif /* _ASM_DS1286_h */ ===== include/asm-mips64/m48t35.h 1.1 vs edited ===== --- 1.1/include/asm-mips64/m48t35.h Tue Feb 5 10:39:55 2002 +++ edited/include/asm-mips64/m48t35.h Tue Sep 17 11:01:57 2002 @@ -21,12 +21,4 @@ #define M48T35_RTC_STOPPED 0x80 #define M48T35_RTC_READ 0x40 -#ifndef BCD_TO_BIN -#define BCD_TO_BIN(x) ((x)=((x)&15) + ((x)>>4)*10) -#endif - -#ifndef BIN_TO_BCD -#define BIN_TO_BCD(x) ((x)=(((x)/10)<<4) + (x)%10) -#endif - #endif ===== include/asm-ppc/m48t35.h 1.3 vs edited ===== --- 1.3/include/asm-ppc/m48t35.h Tue Feb 5 00:54:05 2002 +++ edited/include/asm-ppc/m48t35.h Tue Sep 17 11:01:57 2002 @@ -76,14 +76,4 @@ #define M48T35_RTC_STOPPED 0x80 #define M48T35_RTC_READ 0x40 - -/* read/write conversions */ -#ifndef BCD_TO_BIN -#define BCD_TO_BIN(x) ((x)=((x)&15) + ((x)>>4)*10) -#endif - -#ifndef BIN_TO_BCD -#define BIN_TO_BCD(x) ((x)=(((x)/10)<<4) + (x)%10) -#endif - #endif ===== include/asm-ppc/mk48t59.h 1.2 vs edited ===== --- 1.2/include/asm-ppc/mk48t59.h Tue Feb 5 00:40:23 2002 +++ edited/include/asm-ppc/mk48t59.h Tue Sep 17 11:01:57 2002 @@ -27,12 +27,4 @@ #define MK48T59_RTC_CONTROLB 0x1FF9 #define MK48T59_RTC_CB_STOP 0x80 -#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 - #endif /* _PPC_MK48T59_H */ ===== include/asm-ppc/nvram.h 1.2 vs edited ===== --- 1.2/include/asm-ppc/nvram.h Tue Feb 5 00:40:23 2002 +++ edited/include/asm-ppc/nvram.h Tue Sep 17 11:01:57 2002 @@ -26,14 +26,6 @@ #define MOTO_RTC_CONTROLA 0x1FF8 #define MOTO_RTC_CONTROLB 0x1FF9 -#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 - /* PowerMac specific nvram stuffs */ enum { ===== include/asm-ppc/todc.h 1.1 vs edited ===== --- 1.1/include/asm-ppc/todc.h Sun Feb 10 03:45:43 2002 +++ edited/include/asm-ppc/todc.h Tue Sep 17 11:01:57 2002 @@ -355,14 +355,6 @@ todc_info->flags = clock_type ##_FLAGS; \ } -#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 - extern todc_info_t *todc_info; unsigned char todc_direct_read_val(int addr); ===== include/asm-ppc64/nvram.h 1.2 vs edited ===== --- 1.2/include/asm-ppc64/nvram.h Fri Mar 15 19:14:30 2002 +++ edited/include/asm-ppc64/nvram.h Tue Sep 17 11:01:57 2002 @@ -28,12 +28,4 @@ #define MOTO_RTC_CONTROLA 0x1FF8 #define MOTO_RTC_CONTROLB 0x1FF9 -#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 - #endif /* _PPC64_NVRAM_H */ ===== include/linux/mc146818rtc.h 1.2 vs edited ===== --- 1.2/include/linux/mc146818rtc.h Tue Feb 5 00:45:03 2002 +++ edited/include/linux/mc146818rtc.h Tue Sep 17 11:01:57 2002 @@ -14,6 +14,7 @@ #include <asm/io.h> #include <linux/rtc.h> /* get the user-level API */ #include <linux/spinlock.h> /* spinlock_t */ +#include <linux/bcd.h> /* (BIN|BCD)_TO_(BCD|BIN) */ #include <asm/mc146818rtc.h> /* register access macros */ extern spinlock_t rtc_lock; /* serialize CMOS RAM access */ @@ -86,16 +87,5 @@ #define RTC_VALID RTC_REG_D # define RTC_VRT 0x80 /* valid RAM and time */ /**********************************************************************/ - -/* example: !(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY) - * determines if the following two #defines are needed - */ -#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 #endif /* _MC146818RTC_H */ --- /dev/null 1969-12-31 17:00:00.000000000 -0700 +++ include/linux/bcd.h 2002-09-17 11:01:57.000000000 -0700 @@ -0,0 +1,28 @@ +/* + * include/linux/bcd.h: Macros to convert to/from Binary Coded Decimals. + * + * Originally in numerous files throughout the kernel. + * + * Author: Tom Rini + * trini@mvista.com + * Copyright 2002 MontaVista Software Inc. + * + * Please read the COPYING file for all license details. + */ + +#ifndef __LINUX_BCD_H__ +#define __LINUX_BCD_H__ + +/* + * Just convert the value, and don't change the original. + */ +#define CONVERT_BIN_TO_BCD(val) ((((val) / 10) << 4) + (val) % 10) +#define CONVERT_BCD_TO_BIN(val) (((val) & 15) + ((val) >> 4) * 10) + +/* + * Change the variable 'val' from one to the other. + */ +#define BIN_TO_BCD(val) ((val) = CONVERT_BIN_TO_BCD((val))) +#define BCD_TO_BIN(val) ((val) = CONVERT_BCD_TO_BIN((val))) + +#endif /* __LINUX_BCD_H__ */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/