8e5fb35624
To cut off the power we need to start the shutdown sequence by writing the OFF bit on PMIC. Once the PMIC is programmed the SoC needs to toggle the PMIC_PWR_ENABLE pin when it is ready for the PMIC to cut off the power. This is done by triggering the ALARM2 interrupt on SoC RTC. The RTC driver only works in power management mode which means it won't provide any kind of time keeping functionality. It only implements a way to trigger the ALARM2 interrupt when requested. Differential Revision: https://reviews.freebsd.org/D1489 Reviewed by: rpaulo MFC after: 2 weeks
35 lines
1.5 KiB
C
35 lines
1.5 KiB
C
/*-
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* Copyright 2015 Luiz Otavio O Souza <loos@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _AM335X_RTCVAR_H_
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#define _AM335X_RTCVAR_H_
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void am335x_rtc_pmic_pwr_toggle(void);
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#endif /* _AM335X_RTCVAR_H_ */
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