2 * FR-V MB93093 Power Management Routines
4 * Copyright (c) 2004 Red Hat, Inc.
6 * Written by: msalter@redhat.com
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License.
13 #include <linux/init.h>
15 #include <linux/sched.h>
16 #include <linux/interrupt.h>
17 #include <linux/sysctl.h>
18 #include <linux/errno.h>
19 #include <linux/delay.h>
20 #include <asm/uaccess.h>
22 #include <asm/mb86943a.h>
26 static unsigned long imask;
28 * Setup interrupt masks, etc to enable wakeup by power switch
30 static void mb93093_power_switch_setup(void)
32 /* mask all but FPGA interrupt sources. */
33 imask = *(volatile unsigned long *)0xfeff9820;
34 *(volatile unsigned long *)0xfeff9820 = ~(1 << (IRQ_XIRQ2_LEVEL + 16)) & 0xfffe0000;
38 * Cleanup interrupt masks, etc after wakeup by power switch
40 static void mb93093_power_switch_cleanup(void)
42 *(volatile unsigned long *)0xfeff9820 = imask;
46 * Return non-zero if wakeup irq was caused by power switch
48 static int mb93093_power_switch_check(void)
54 * Initialize power interface
56 static int __init mb93093_pm_init(void)
58 __power_switch_wake_setup = mb93093_power_switch_setup;
59 __power_switch_wake_check = mb93093_power_switch_check;
60 __power_switch_wake_cleanup = mb93093_power_switch_cleanup;
64 __initcall(mb93093_pm_init);