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/*
* arch/arm/mach-sunxi/arisc/include/arisc_hwspinlock.h
*
* Copyright (c) 2012 Allwinner.
* 2012-10-01 Written by superm (superm@allwinnertech.com).
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ARISC_HW_SPINLOCK_H
#define __ARISC_HW_SPINLOCK_H
/* the max number of hardware spinlock */
#define ARISC_HW_SPINLOCK_NUM (32)
/**
* initialize hwspinlock.
* @para: none.
*
* returns: OK if initialize hwspinlock succeeded, others if failed.
*/
int arisc_hwspinlock_init(void);
/**
* exit hwspinlock.
* @para: none.
*
* returns: OK if exit hwspinlock succeeded, others if failed.
*/
int arisc_hwspinlock_exit(void);
/**
* lock an hwspinlock with timeout limit.
* @hwid : an hwspinlock id which we want to lock.
*
* returns: OK if lock hwspinlock succeeded, other if failed.
*/
int arisc_hwspin_lock(int hwid);
/**
* unlock a specific hwspinlock.
* @hwid : an hwspinlock id which we want to unlock.
*
* returns: OK if unlock hwspinlock succeeded, other if failed.
*/
int arisc_hwspin_unlock(int hwid);
int arisc_hwspinlock_standby_suspend(void);
int arisc_hwspinlock_standby_resume(void);
#endif /* __ARISC_HW_SPINLOCK_H */
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