mirror of
https://github.com/adulau/aha.git
synced 2024-12-29 12:16:20 +00:00
56b3442688
Move the IRQ_EINT sleep control to be available to all s3c impelmentations. Since s3c_irqext_wake is not large, place it in arch/arm/plat-s3c/pm.c as adding it to a new file would be a waste of compile time. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
/* linux/arch/arm/plat-s3c24xx/irq-om.c
|
|
*
|
|
* Copyright (c) 2003,2004 Simtec Electronics
|
|
* Ben Dooks <ben@simtec.co.uk>
|
|
* http://armlinux.simtec.co.uk/
|
|
*
|
|
* S3C24XX - IRQ PM code
|
|
*
|
|
* 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 <linux/sysdev.h>
|
|
|
|
#include <plat/cpu.h>
|
|
#include <plat/pm.h>
|
|
#include <plat/irq.h>
|
|
|
|
/* state for IRQs over sleep */
|
|
|
|
/* default is to allow for EINT0..EINT15, and IRQ_RTC as wakeup sources
|
|
*
|
|
* set bit to 1 in allow bitfield to enable the wakeup settings on it
|
|
*/
|
|
|
|
unsigned long s3c_irqwake_intallow = 1L << (IRQ_RTC - IRQ_EINT0) | 0xfL;
|
|
unsigned long s3c_irqwake_eintallow = 0x0000fff0L;
|
|
|
|
int s3c_irq_wake(unsigned int irqno, unsigned int state)
|
|
{
|
|
unsigned long irqbit = 1 << (irqno - IRQ_EINT0);
|
|
|
|
if (!(s3c_irqwake_intallow & irqbit))
|
|
return -ENOENT;
|
|
|
|
printk(KERN_INFO "wake %s for irq %d\n",
|
|
state ? "enabled" : "disabled", irqno);
|
|
|
|
if (!state)
|
|
s3c_irqwake_intmask |= irqbit;
|
|
else
|
|
s3c_irqwake_intmask &= ~irqbit;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct sleep_save irq_save[] = {
|
|
SAVE_ITEM(S3C2410_INTMSK),
|
|
SAVE_ITEM(S3C2410_INTSUBMSK),
|
|
};
|
|
|
|
/* the extint values move between the s3c2410/s3c2440 and the s3c2412
|
|
* so we use an array to hold them, and to calculate the address of
|
|
* the register at run-time
|
|
*/
|
|
|
|
static unsigned long save_extint[3];
|
|
static unsigned long save_eintflt[4];
|
|
static unsigned long save_eintmask;
|
|
|
|
int s3c24xx_irq_suspend(struct sys_device *dev, pm_message_t state)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(save_extint); i++)
|
|
save_extint[i] = __raw_readl(S3C24XX_EXTINT0 + (i*4));
|
|
|
|
for (i = 0; i < ARRAY_SIZE(save_eintflt); i++)
|
|
save_eintflt[i] = __raw_readl(S3C24XX_EINFLT0 + (i*4));
|
|
|
|
s3c_pm_do_save(irq_save, ARRAY_SIZE(irq_save));
|
|
save_eintmask = __raw_readl(S3C24XX_EINTMASK);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int s3c24xx_irq_resume(struct sys_device *dev)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(save_extint); i++)
|
|
__raw_writel(save_extint[i], S3C24XX_EXTINT0 + (i*4));
|
|
|
|
for (i = 0; i < ARRAY_SIZE(save_eintflt); i++)
|
|
__raw_writel(save_eintflt[i], S3C24XX_EINFLT0 + (i*4));
|
|
|
|
s3c_pm_do_restore(irq_save, ARRAY_SIZE(irq_save));
|
|
__raw_writel(save_eintmask, S3C24XX_EINTMASK);
|
|
|
|
return 0;
|
|
}
|