linux-vybrid_public/include/asm-avr32/arch-at32ap/pm.h

/*
 * AVR32 AP Power Management.
 *
 * Copyright (C) 2008 Atmel Corporation
 *
 * 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_AVR32_ARCH_PM_H
#define __ASM_AVR32_ARCH_PM_H

/* Possible arguments to the "sleep" instruction */
#define CPU_SLEEP_IDLE		0
#define CPU_SLEEP_FROZEN	1
#define CPU_SLEEP_STANDBY	2
#define CPU_SLEEP_STOP		3
#define CPU_SLEEP_STATIC	5

#ifndef __ASSEMBLY__
extern void cpu_enter_idle(void);

extern bool disable_idle_sleep;

static inline void cpu_disable_idle_sleep(void)
{
	disable_idle_sleep = true;
}

static inline void cpu_enable_idle_sleep(void)
{
	disable_idle_sleep = false;
}

static inline void cpu_idle_sleep(void)
{
	/*
	 * If we're using the COUNT and COMPARE registers for
	 * timekeeping, we can't use the IDLE state.
	 */
	if (disable_idle_sleep)
		cpu_relax();
	else
		cpu_enter_idle();
}
#endif

#endif /* __ASM_AVR32_ARCH_PM_H */