irq-pm.c
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/* linux/arch/arm/plat-s5p/irq-pm.c
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Based on arch/arm/plat-s3c24xx/irq-pm.c,
* Copyright (c) 2003,2004 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
* http://armlinux.simtec.co.uk/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <plat/cpu.h>
#include <plat/irqs.h>
#include <plat/pm.h>
#include <mach/map.h>
#include <mach/regs-gpio.h>
#include <mach/regs-irq.h>
/* state for IRQs over sleep */
/* default is to allow for EINT0..EINT31, and IRQ_RTC_TIC, IRQ_RTC_ALARM,
* as wakeup sources
*
* set bit to 1 in allow bitfield to enable the wakeup settings on it
*/
unsigned long s3c_irqwake_intallow = 0x00000006L;
unsigned long s3c_irqwake_eintallow = 0xffffffffL;
int s3c_irq_wake(struct irq_data *data, unsigned int state)
{
unsigned long irqbit;
switch (data->irq) {
case IRQ_RTC_TIC:
case IRQ_RTC_ALARM:
irqbit = 1 << (data->irq + 1 - IRQ_RTC_ALARM);
if (!state)
s3c_irqwake_intmask |= irqbit;
else
s3c_irqwake_intmask &= ~irqbit;
break;
default:
return -ENOENT;
}
return 0;
}
static struct sleep_save eint_save[] = {
SAVE_ITEM(S5P_EINT_CON(0)),
SAVE_ITEM(S5P_EINT_CON(1)),
SAVE_ITEM(S5P_EINT_CON(2)),
SAVE_ITEM(S5P_EINT_CON(3)),
SAVE_ITEM(S5P_EINT_FLTCON(0)),
SAVE_ITEM(S5P_EINT_FLTCON(1)),
SAVE_ITEM(S5P_EINT_FLTCON(2)),
SAVE_ITEM(S5P_EINT_FLTCON(3)),
SAVE_ITEM(S5P_EINT_FLTCON(4)),
SAVE_ITEM(S5P_EINT_FLTCON(5)),
SAVE_ITEM(S5P_EINT_FLTCON(6)),
SAVE_ITEM(S5P_EINT_FLTCON(7)),
SAVE_ITEM(S5P_EINT_MASK(0)),
SAVE_ITEM(S5P_EINT_MASK(1)),
SAVE_ITEM(S5P_EINT_MASK(2)),
SAVE_ITEM(S5P_EINT_MASK(3)),
};
int s3c24xx_irq_suspend(void)
{
s3c_pm_do_save(eint_save, ARRAY_SIZE(eint_save));
return 0;
}
void s3c24xx_irq_resume(void)
{
s3c_pm_do_restore(eint_save, ARRAY_SIZE(eint_save));
}