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freebsd/sys/arm/at91/at91_rtcreg.h
Warner Losh 6859e74003 Use the RTC unit to get the time. This works on all known AT91SAM9*
processors, either on reboot or after power down with battery backup.
However, the AT91RM9200 RTC always resets on reboot making it just
about useless at the moment (if we support a low-power mode or an
extended sleep mode, it might become useful).

Submitted by:	Ian Lepore
2012-10-07 01:58:32 +00:00

104 lines
4.2 KiB
C

/*-
* Copyright (c) 2006 M. Warner Losh. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* $FreeBSD$ */
#ifndef ARM_AT91_AT91_RTCREG_H
#define ARM_AT91_AT91_RTCREG_H
/* Registers */
#define RTC_CR 0x00 /* RTC Control Register */
#define RTC_MR 0x04 /* RTC Mode Register */
#define RTC_TIMR 0x08 /* RTC Time Register */
#define RTC_CALR 0x0c /* RTC Calendar Register */
#define RTC_TIMALR 0x10 /* RTC Time Alarm Register */
#define RTC_CALALR 0x14 /* RTC Calendar Alarm Register */
#define RTC_SR 0x18 /* RTC Status Register */
#define RTC_SCCR 0x1c /* RTC Status Command Clear Register */
#define RTC_IER 0x20 /* RTC Interrupt Enable Register */
#define RTC_IDR 0x24 /* RTC Interrupt Disable Register */
#define RTC_IMR 0x28 /* RTC Interrupt Mask Register */
#define RTC_VER 0x2c /* RTC Valid Entry Register */
/* CR */
#define RTC_CR_UPDTIM (0x1u << 0) /* Request update of time register */
#define RTC_CR_UPDCAL (0x1u << 1) /* Request update of calendar reg. */
/* TIMR */
#define RTC_TIMR_SEC_M 0x7fUL
#define RTC_TIMR_SEC_S 0
#define RTC_TIMR_SEC(x) FROMBCD(((x) & RTC_TIMR_SEC_M) >> RTC_TIMR_SEC_S)
#define RTC_TIMR_MIN_M 0x7f00UL
#define RTC_TIMR_MIN_S 8
#define RTC_TIMR_MIN(x) FROMBCD(((x) & RTC_TIMR_MIN_M) >> RTC_TIMR_MIN_S)
#define RTC_TIMR_HR_M 0x3f0000UL
#define RTC_TIMR_HR_S 16
#define RTC_TIMR_HR(x) FROMBCD(((x) & RTC_TIMR_HR_M) >> RTC_TIMR_HR_S)
#define RTC_TIMR_MK(hr, min, sec) \
((TOBCD(hr) << RTC_TIMR_HR_S) | \
(TOBCD(min) << RTC_TIMR_MIN_S) | \
(TOBCD(sec) << RTC_TIMR_SEC_S))
#define RTC_TIMR_PM (1UL << 22)
/* CALR */
#define RTC_CALR_CEN_M 0x0000007fUL
#define RTC_CALR_CEN_S 0
#define RTC_CALR_CEN(x) FROMBCD(((x) & RTC_CALR_CEN_M) >> RTC_CALR_CEN_S)
#define RTC_CALR_YEAR_M 0x0000ff00UL
#define RTC_CALR_YEAR_S 8
#define RTC_CALR_YEAR(x) FROMBCD(((x) & RTC_CALR_YEAR_M) >> RTC_CALR_YEAR_S)
#define RTC_CALR_MON_M 0x001f0000UL
#define RTC_CALR_MON_S 16
#define RTC_CALR_MON(x) FROMBCD(((x) & RTC_CALR_MON_M) >> RTC_CALR_MON_S)
#define RTC_CALR_DOW_M 0x00d0000UL
#define RTC_CALR_DOW_S 21
#define RTC_CALR_DOW(x) FROMBCD(((x) & RTC_CALR_DOW_M) >> RTC_CALR_DOW_S)
#define RTC_CALR_DAY_M 0x3f000000UL
#define RTC_CALR_DAY_S 24
#define RTC_CALR_DAY(x) FROMBCD(((x) & RTC_CALR_DAY_M) >> RTC_CALR_DAY_S)
#define RTC_CALR_MK(yr, mon, day, dow) \
((TOBCD((yr) / 100) << RTC_CALR_CEN_S) | \
(TOBCD((yr) % 100) << RTC_CALR_YEAR_S) | \
(TOBCD(mon) << RTC_CALR_MON_S) | \
(TOBCD(dow) << RTC_CALR_DOW_S) | \
(TOBCD(day) << RTC_CALR_DAY_S))
/* SR */
#define RTC_SR_ACKUPD (0x1u << 0) /* Acknowledge for Update */
#define RTC_SR_ALARM (0x1u << 1) /* Alarm Flag */
#define RTC_SR_SECEV (0x1u << 2) /* Second Event */
#define RTC_SR_TIMEV (0x1u << 3) /* Time Event */
#define RTC_SR_CALEV (0x1u << 4) /* Calendar event */
/* VER */
#define RTC_VER_NVTIM (0x1 << 0) /* Non-valid time */
#define RTC_VER_NVCAL (0x1 << 1) /* Non-valid calendar */
#define RTC_VER_NVTIMALR (0x1 << 2) /* Non-valid time alarm */
#define RTC_VER_NVCALALR (0x1 << 3) /* Non-valid calendar alarm */
#endif /* ARM_AT91_AT91_RTCREG_H */