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/*
* ds17287rtc.h - register definitions for the ds1728[57] RTC / CMOS RAM
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* (C) 2003 Guido Guenther <agx@sigxcpu.org>
*/
#ifndef __LINUX_DS17287RTC_H
#define __LINUX_DS17287RTC_H
#include <linux/rtc.h> /* get the user-level API */
#include <linux/spinlock.h> /* spinlock_t */
#include <linux/mc146818rtc.h>
/* Register A */
#define DS_REGA_DV2 0x40 /* countdown chain */
#define DS_REGA_DV1 0x20 /* oscillator enable */
#define DS_REGA_DV0 0x10 /* bank select */
/* bank 1 registers */
#define DS_B1_MODEL 0x40 /* model number byte */
#define DS_B1_SN1 0x41 /* serial number byte 1 */
#define DS_B1_SN2 0x42 /* serial number byte 2 */
#define DS_B1_SN3 0x43 /* serial number byte 3 */
#define DS_B1_SN4 0x44 /* serial number byte 4 */
#define DS_B1_SN5 0x45 /* serial number byte 5 */
#define DS_B1_SN6 0x46 /* serial number byte 6 */
#define DS_B1_CRC 0x47 /* CRC byte */
#define DS_B1_CENTURY 0x48 /* Century byte */
#define DS_B1_DALARM 0x49 /* date alarm */
#define DS_B1_XCTRL4A 0x4a /* extendec control register 4a */
#define DS_B1_XCTRL4B 0x4b /* extendec control register 4b */
#define DS_B1_RTCADDR2 0x4e /* rtc address 2 */
#define DS_B1_RTCADDR3 0x4f /* rtc address 3 */
#define DS_B1_RAMLSB 0x50 /* extended ram LSB */
#define DS_B1_RAMMSB 0x51 /* extended ram MSB */
#define DS_B1_RAMDPORT 0x53 /* extended ram data port */
/* register details */
/* extended control register 4a */
#define DS_XCTRL4A_VRT2 0x80 /* valid ram and time */
#define DS_XCTRL4A_INCR 0x40 /* increment progress status */
#define DS_XCTRL4A_BME 0x20 /* burst mode enable */
#define DS_XCTRL4A_PAB 0x08 /* power active bar ctrl */
#define DS_XCTRL4A_RF 0x04 /* ram clear flag */
#define DS_XCTRL4A_WF 0x02 /* wake up alarm flag */
#define DS_XCTRL4A_KF 0x01 /* kickstart flag */
/* interrupt causes */
#define DS_XCTRL4A_IFS (DS_XCTRL4A_RF|DS_XCTRL4A_WF|DS_XCTRL4A_KF)
/* extended control register 4b */
#define DS_XCTRL4B_ABE 0x80 /* auxiliary battery enable */
#define DS_XCTRL4B_E32K 0x40 /* enable 32.768 kHz Output */
#define DS_XCTRL4B_CS 0x20 /* crystal select */
#define DS_XCTRL4B_RCE 0x10 /* ram clear enable */
#define DS_XCTRL4B_PRS 0x08 /* PAB resec select */
#define DS_XCTRL4B_RIE 0x04 /* ram clear interrupt enable */
#define DS_XCTRL4B_WFE 0x02 /* wake up alarm interrupt enable */
#define DS_XCTRL4B_KFE 0x01 /* kickstart interrupt enable */
/* interrupt enable bits */
#define DS_XCTRL4B_IFES (DS_XCTRL4B_RIE|DS_XCTRL4B_WFE|DS_XCTRL4B_KFE)
#endif /* __LINUX_DS17287RTC_H */
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