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Length: 2689 (0xa81)
Types: TextFile
Notes: UNIX file
Names: »rtc.h«
└─⟦a6ab2eb36⟧ Bits:30004042/kconfig3.imd SW95705I 386/ix Multi-user Release 1.2
└─⟦a6ab2eb36⟧ UNIX Filesystem
└─⟦this⟧ »kc/new/usr/include/sys/rtc.h«
/*
* Definitions for Real Time Clock driver (Motorola MC146818 chip).
*/
/*
* Copyrighted as an unpublished work.
* (c) Copyright 1986 INTERACTIVE Systems Corporation
* All rights reserved.
*
* RESTRICTED RIGHTS
*
* These programs are supplied under a license. They may be used,
* disclosed, and/or copied only as permitted under such license
* agreement. Any copy must contain the above copyright notice and
* this restricted rights notice. Use, copying, and/or disclosure
* of the programs is strictly prohibited unless otherwise provided
* in the license agreement.
*/
#ident "@(#)rtc.h 1.4 - 87/09/23"
#define RTC_ADDR 0x70 /* I/O port address of for register select */
#define RTC_DATA 0x71 /* I/O port address for data read/write */
/*
* Register A definitions
*/
#define RTC_A 0x0a /* register A address */
#define RTC_UIP 0x80 /* Update in progress bit */
#define RTC_DIV0 0x00 /* Time base of 4.194304 MHz */
#define RTC_DIV1 0x10 /* Time base of 1.048576 MHz */
#define RTC_DIV2 0x20 /* Time base of 32.768 KHz */
#define RTC_RATE6 0x06 /* interrupt rate of 976.562 */
/*
* Register B definitions
*/
#define RTC_B 0x0b /* register B address */
#define RTC_SET 0x80 /* stop updates for time set */
#define RTC_PIE 0x40 /* Periodic interrupt enable */
#define RTC_AIE 0x20 /* Alarm interrupt enable */
#define RTC_UIE 0x10 /* Update ended interrupt enable */
#define RTC_SQWE 0x08 /* Square wave enable */
#define RTC_DM 0x04 /* Date mode, 1 = binary, 0 = BCD */
#define RTC_HM 0x02 /* hour mode, 1 = 24 hour, 0 = 12 hour */
#define RTC_DSE 0x01 /* Daylight savings enable */
/*
* Register C definitions
*/
#define RTC_C 0x0c /* register C address */
#define RTC_IRQF 0x80 /* IRQ flag */
#define RTC_PF 0x40 /* PF flag bit */
#define RTC_AF 0x20 /* AF flag bit */
#define RTC_UF 0x10 /* UF flag bit */
/*
* Register D definitions
*/
#define RTC_D 0x0d /* register D address */
#define RTC_VRT 0x80 /* Valid RAM and time bit */
/*
* rtcflags definitions
*/
#define RTC_LOCK 0x01
#define RTC_WANTED 0x02
#define RTC_READ 0x04
#define RTC_DONE 0x08
#define RTC_NREG 0x0e /* number of RTC registers */
#define RTC_NREGP 0x0a /* number of RTC registers to set time */
/*
* Ioctl definitions for accessing RTC.
*/
#define RTCIOC ('R' << 8)
#define RTCRTIME (RTCIOC | 0x01) /* Read time from RTC */
#define RTCSTIME (RTCIOC | 0x02) /* Set time into RTC */
struct rtc_t {
char rtc_sec;
char rtc_asec;
char rtc_min;
char rtc_amin;
char rtc_hr;
char rtc_ahr;
char rtc_dow;
char rtc_dom;
char rtc_mon;
char rtc_yr;
char rtc_statusa;
char rtc_statusb;
char rtc_statusc;
char rtc_statusd;
};