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/*
* arch/arm/include/asm/bL_switcher.h
*
* Created by: Nicolas Pitre, April 2012
* Copyright: (C) 2012 Linaro Limited
*
* 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.
*/
#ifndef ASM_BL_SWITCHER_H
#define ASM_BL_SWITCHER_H
#include <linux/compiler.h>
#include <linux/types.h>
int bL_switch_request(unsigned int cpu, unsigned int new_cluster_id);
/*
* Register here to be notified about runtime enabling/disabling of
* the switcher.
*
* The notifier chain is called with the switcher activation lock held:
* the switcher will not be enabled or disabled during callbacks.
* Callbacks must not call bL_switcher_{get,put}_enabled().
*/
#define BL_NOTIFY_PRE_ENABLE 0
#define BL_NOTIFY_POST_ENABLE 1
#define BL_NOTIFY_PRE_DISABLE 2
#define BL_NOTIFY_POST_DISABLE 3
#ifdef CONFIG_BL_SWITCHER
int bL_switcher_register_notifier(struct notifier_block *nb);
int bL_switcher_unregister_notifier(struct notifier_block *nb);
/*
* Use these functions to temporarily prevent enabling/disabling of
* the switcher.
* bL_switcher_get_enabled() returns true if the switcher is currently
* enabled. Each call to bL_switcher_get_enabled() must be followed
* by a call to bL_switcher_put_enabled(). These functions are not
* recursive.
*/
bool bL_switcher_get_enabled(void);
void bL_switcher_put_enabled(void);
int bL_switcher_trace_trigger(void);
#else
static inline int bL_switcher_register_notifier(struct notifier_block *nb)
{
return 0;
}
static inline int bL_switcher_unregister_notifier(struct notifier_block *nb)
{
return 0;
}
static inline bool bL_switcher_get_enabled(void) { return false; }
static inline void bL_switcher_put_enabled(void) { }
static inline int bL_switcher_trace_trigger(void) { return 0; }
#endif /* CONFIG_BL_SWITCHER */
#endif
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