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297af3a483
Creative ZEN lost it's time when shutting down. The bug was introduced with commit7f282b9280(g#2601), followed bye3f6e9d9f6(g#2616). I guarded all persistent register writes with wait loops, as described in the datasheet. TODO: test SONY_NWZE360 and SONY_NWZE370 targets Change-Id: Ib38ab8691fd1c6e8d0771c1e2eca20dfeb6fc87f
113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright © 2011 by Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef RTC_IMX233_H
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#define RTC_IMX233_H
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#include "config.h"
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#include "system.h"
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#include "cpu.h"
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#include "regs/rtc.h"
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#define HW_RTC_PERSISTENTn(n) *(&HW_RTC_PERSISTENT0 + 4 * (n))
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struct imx233_rtc_info_t
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{
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uint32_t seconds;
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uint32_t persistent[6];
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uint32_t alarm;
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uint32_t rtc_ctrl;
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uint32_t rtc_stat;
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bool alarm_en, alarm_wake_en, alarm_wake, alarm_irq;
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};
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static inline uint32_t imx233_rtc_read_seconds(void)
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{
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return HW_RTC_SECONDS;
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}
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static inline uint32_t imx233_rtc_read_persistent(int idx)
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{
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return HW_RTC_PERSISTENTn(idx);
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}
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static inline void imx233_rtc_clear_msec_irq(void)
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{
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BF_CLR(RTC_CTRL, ONEMSEC_IRQ);
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}
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static inline void imx233_rtc_enable_msec_irq(bool enable)
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{
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imx233_rtc_clear_msec_irq();
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if(enable)
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BF_SET(RTC_CTRL, ONEMSEC_IRQ_EN);
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else
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BF_CLR(RTC_CTRL, ONEMSEC_IRQ_EN);
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}
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static inline uint32_t imx233_rtc_read_alarm(void)
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{
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return HW_RTC_ALARM;
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}
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static inline void imx233_rtc_enable_watchdog(bool en)
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{
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if(en)
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BF_SET(RTC_CTRL, WATCHDOGEN);
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else
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BF_CLR(RTC_CTRL, WATCHDOGEN);
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}
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static inline void imx233_rtc_reset_watchdog(uint32_t ms)
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{
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HW_RTC_WATCHDOG = ms;
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}
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static inline void imx233_rtc_init(void)
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{
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BF_CLR(RTC_CTRL, SFTRST);
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udelay(5); /* only need 3 GPMI clocks (1us) */
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BF_CLR(RTC_CTRL, CLKGATE);
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#if defined(SANSA_FUZEPLUS)
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#ifdef BM_RTC_PERSISTENT0_DISABLE_XTALOK
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while (BF_RD(RTC_STAT, NEW_REGS)!=0) {};
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BF_SET(RTC_PERSISTENT0, XTAL24MHZ_PWRUP, DISABLE_XTALOK);
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#endif
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while (BF_RD(RTC_STAT, NEW_REGS)!=0) {};
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BF_CLR(RTC_PERSISTENT0, CLOCKSOURCE);
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#else
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/* confirmed for CREATIVE_ZEN and CREATIVE_ZENXFI2 */
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/* FIXME: test SONY_NWZE360 and SONY_NWZE370 targets */
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while (BF_RD(RTC_STAT, NEW_REGS)!=0) {};
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BF_SET(RTC_PERSISTENT0, XTAL32KHZ_PWRUP, CLOCKSOURCE);
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while (BF_RD(RTC_STAT, NEW_REGS)!=0) {};
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BF_CLR(RTC_PERSISTENT0, XTAL24MHZ_PWRUP, DISABLE_XTALOK);
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#endif
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imx233_rtc_enable_watchdog(false);
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}
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void imx233_rtc_write_seconds(uint32_t seconds);
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void imx233_rtc_write_persistent(int idx, uint32_t val);
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void imx233_rtc_write_alarm(uint32_t seconds);
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struct imx233_rtc_info_t imx233_rtc_get_info(void);
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#endif /* RTC_IMX233_H */
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