66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
/*
|
|
* FR-V MB93093 Power Management Routines
|
|
*
|
|
* Copyright (c) 2004 Red Hat, Inc.
|
|
*
|
|
* Written by: msalter@redhat.com
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License.
|
|
*
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/pm.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/sysctl.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/delay.h>
|
|
#include <asm/uaccess.h>
|
|
|
|
#include <asm/mb86943a.h>
|
|
|
|
#include "local.h"
|
|
|
|
static unsigned long imask;
|
|
/*
|
|
* Setup interrupt masks, etc to enable wakeup by power switch
|
|
*/
|
|
static void mb93093_power_switch_setup(void)
|
|
{
|
|
/* mask all but FPGA interrupt sources. */
|
|
imask = *(volatile unsigned long *)0xfeff9820;
|
|
*(volatile unsigned long *)0xfeff9820 = ~(1 << (IRQ_XIRQ2_LEVEL + 16)) & 0xfffe0000;
|
|
}
|
|
|
|
/*
|
|
* Cleanup interrupt masks, etc after wakeup by power switch
|
|
*/
|
|
static void mb93093_power_switch_cleanup(void)
|
|
{
|
|
*(volatile unsigned long *)0xfeff9820 = imask;
|
|
}
|
|
|
|
/*
|
|
* Return non-zero if wakeup irq was caused by power switch
|
|
*/
|
|
static int mb93093_power_switch_check(void)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Initialize power interface
|
|
*/
|
|
static int __init mb93093_pm_init(void)
|
|
{
|
|
__power_switch_wake_setup = mb93093_power_switch_setup;
|
|
__power_switch_wake_check = mb93093_power_switch_check;
|
|
__power_switch_wake_cleanup = mb93093_power_switch_cleanup;
|
|
return 0;
|
|
}
|
|
|
|
__initcall(mb93093_pm_init);
|
|
|