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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright © 2011 by Amaury Pouly
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef RTC_IMX233_H
#define RTC_IMX233_H
#include "config.h"
#include "system.h"
#include "cpu.h"
#include "regs/rtc.h"
#define HW_RTC_PERSISTENTn(n) *(&HW_RTC_PERSISTENT0 + 4 * (n))
struct imx233_rtc_info_t
{
uint32_t seconds;
uint32_t persistent[6];
uint32_t alarm;
bool alarm_en, alarm_wake_en, alarm_wake, alarm_irq;
};
static inline uint32_t imx233_rtc_read_seconds(void)
{
return HW_RTC_SECONDS;
}
static inline uint32_t imx233_rtc_read_persistent(int idx)
{
return HW_RTC_PERSISTENTn(idx);
}
static inline void imx233_rtc_clear_msec_irq(void)
{
BF_CLR(RTC_CTRL, ONEMSEC_IRQ);
}
static inline void imx233_rtc_enable_msec_irq(bool enable)
{
imx233_rtc_clear_msec_irq();
if(enable)
BF_SET(RTC_CTRL, ONEMSEC_IRQ_EN);
else
BF_CLR(RTC_CTRL, ONEMSEC_IRQ_EN);
}
static inline uint32_t imx233_rtc_read_alarm(void)
{
return HW_RTC_ALARM;
}
static inline void imx233_rtc_enable_watchdog(bool en)
{
if(en)
BF_SET(RTC_CTRL, WATCHDOGEN);
else
BF_CLR(RTC_CTRL, WATCHDOGEN);
}
static inline void imx233_rtc_reset_watchdog(uint32_t ms)
{
HW_RTC_WATCHDOG = ms;
}
static inline void imx233_rtc_init(void)
{
BF_CLR(RTC_CTRL, SFTRST);
udelay(5); /* only need 3 GPMI clocks (1us) */
BF_CLR(RTC_CTRL, CLKGATE);
#ifdef BM_RTC_PERSISTENT0_DISABLE_XTALOK
BF_SET(RTC_PERSISTENT0, XTAL24MHZ_PWRUP, DISABLE_XTALOK);
#endif
BF_CLR(RTC_PERSISTENT0, CLOCKSOURCE);
imx233_rtc_enable_watchdog(false);
}
void imx233_rtc_write_seconds(uint32_t seconds);
void imx233_rtc_write_persistent(int idx, uint32_t val);
void imx233_rtc_write_alarm(uint32_t seconds);
struct imx233_rtc_info_t imx233_rtc_get_info(void);
#endif /* RTC_IMX233_H */
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