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/*
* (C) Copyright 2015 Robert Jarzmik <robert.jarzmik@free.fr>
*
* 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 program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <common.h>
#include <init.h>
#include <poweroff.h>
#include <reset_source.h>
#include <mach/hardware.h>
#include <mach/pxa-regs.h>
extern void pxa3xx_suspend(int mode);
static int pxa_detect_reset_source(void)
{
u32 reg = ARSR;
/*
* Order is important, as many bits can be set together
*/
if (reg & ARSR_GPR)
reset_source_set(RESET_RST);
else if (reg & ARSR_WDT)
reset_source_set(RESET_WDG);
else if (reg & ARSR_HWR)
reset_source_set(RESET_POR);
else if (reg & ARSR_LPMR)
reset_source_set(RESET_WKE);
else
reset_source_set(RESET_UKWN);
return 0;
}
void pxa_clear_reset_source(void)
{
ARSR = ARSR_GPR | ARSR_LPMR | ARSR_WDT | ARSR_HWR;
}
device_initcall(pxa_detect_reset_source);
static void __noreturn pxa3xx_poweroff(struct poweroff_handler *handler)
{
shutdown_barebox();
/* Clear last reset source */
pxa_clear_reset_source();
pxa3xx_suspend(PXA3xx_PM_S3D4C4);
unreachable();
}
static int pxa3xx_init(void)
{
poweroff_handler_register_fn(pxa3xx_poweroff);
pxa_detect_reset_source();
return 0;
}
device_initcall(pxa3xx_init);
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