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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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6ab3d5624e
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
/*
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* FR-V MB93093 Power Management Routines
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*
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* Copyright (c) 2004 Red Hat, Inc.
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*
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* Written by: msalter@redhat.com
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License.
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*
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*/
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#include <linux/init.h>
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#include <linux/pm.h>
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#include <linux/sched.h>
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#include <linux/interrupt.h>
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#include <linux/sysctl.h>
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#include <linux/errno.h>
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#include <linux/delay.h>
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#include <asm/uaccess.h>
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#include <asm/mb86943a.h>
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#include "local.h"
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static unsigned long imask;
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/*
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* Setup interrupt masks, etc to enable wakeup by power switch
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*/
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static void mb93093_power_switch_setup(void)
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{
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/* mask all but FPGA interrupt sources. */
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imask = *(volatile unsigned long *)0xfeff9820;
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*(volatile unsigned long *)0xfeff9820 = ~(1 << (IRQ_XIRQ2_LEVEL + 16)) & 0xfffe0000;
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}
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/*
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* Cleanup interrupt masks, etc after wakeup by power switch
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*/
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static void mb93093_power_switch_cleanup(void)
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{
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*(volatile unsigned long *)0xfeff9820 = imask;
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}
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/*
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* Return non-zero if wakeup irq was caused by power switch
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*/
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static int mb93093_power_switch_check(void)
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{
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return 1;
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}
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/*
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* Initialize power interface
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*/
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static int __init mb93093_pm_init(void)
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{
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__power_switch_wake_setup = mb93093_power_switch_setup;
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__power_switch_wake_check = mb93093_power_switch_check;
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__power_switch_wake_cleanup = mb93093_power_switch_cleanup;
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return 0;
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}
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__initcall(mb93093_pm_init);
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