cpuidle.h

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#ifndef __ASM_ARM_CPUIDLE_H
#define __ASM_ARM_CPUIDLE_H

#ifdef CONFIG_CPU_IDLE
extern int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
        struct cpuidle_driver *drv, int index);
#else
static inline int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
        struct cpuidle_driver *drv, int index) { return -ENODEV; }
#endif

/* Common ARM WFI state */
#define ARM_CPUIDLE_WFI_STATE_PWR(p) {\
    .enter                  = arm_cpuidle_simple_enter,\
    .exit_latency           = 1,\
    .target_residency       = 1,\
    .power_usage        = p,\
    .flags                  = CPUIDLE_FLAG_TIME_VALID,\
    .name                   = "WFI",\
    .desc                   = "ARM WFI",\
}

/*
 * in case power_specified == 1, give a default WFI power value needed
 * by some governors
 */
#define ARM_CPUIDLE_WFI_STATE ARM_CPUIDLE_WFI_STATE_PWR(UINT_MAX)

#endif