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/*
* This file contains the definitions for the following real-time clocks:
*
* + Motorola MC146818A
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#ifndef __LIBCHIP_MC146818A_h
#define __LIBCHIP_MC146818A_h
/*
* Register addresses within chip
*/
#define MC146818A_SEC 0x00 /* seconds */
#define MC146818A_SECALRM 0x01 /* seconds alarm */
#define MC146818A_MIN 0x02 /* minutes */
#define MC146818A_MINALRM 0x03 /* minutes alarm */
#define MC146818A_HRS 0x04 /* hours */
#define MC146818A_HRSALRM 0x05 /* hours alarm */
#define MC146818A_WDAY 0x06 /* week day */
#define MC146818A_DAY 0x07 /* day of month */
#define MC146818A_MONTH 0x08 /* month of year */
#define MC146818A_YEAR 0x09 /* month of year */
#define MC146818A_STATUSA 0x0a /* status register A */
#define MC146818ASA_TUP 0x80 /* time update in progress */
#define MC146818ASA_DIVIDER 0x20 /* divider for 32768 crystal */
#define MC146818ASA_1024 0x06 /* divide to 1024 Hz */
#define MC146818A_STATUSB 0x0b /* status register B */
#define MC146818ASB_DST 0x01 /* Daylight Savings Time */
#define MC146818ASB_24HR 0x02 /* 0 = 12 hours, 1 = 24 hours */
#define MC146818ASB_HALT 0x80 /* stop clock updates */
#define MC146818A_STATUSD 0x0d /* status register D */
#define MC146818ASD_PWR 0x80 /* clock lost power */
/*
* Driver function table
*/
extern rtc_fns mc146818a_fns;
bool mc146818a_probe(
int minor
);
/*
* Default register access routines
*/
uint32_t mc146818a_get_register(
uint32_t ulCtrlPort,
uint8_t ucRegNum
);
void mc146818a_set_register(
uint32_t ulCtrlPort,
uint8_t ucRegNum,
uint32_t ucData
);
#endif
/* end of include file */
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