arch/arm/include/asm/cpuidle.h

   1 #ifndef __ASM_ARM_CPUIDLE_H
   2 #define __ASM_ARM_CPUIDLE_H
   3
   4 #ifdef CONFIG_CPU_IDLE
   5 extern int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
   6                 struct cpuidle_driver *drv, int index);
   7 #else
   8 static inline int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
   9                 struct cpuidle_driver *drv, int index) { return -ENODEV; }
  10 #endif
  11
  12 /* Common ARM WFI state */
  13 #define ARM_CPUIDLE_WFI_STATE_PWR(p) {\
  14         .enter                  = arm_cpuidle_simple_enter,\
  15         .exit_latency           = 1,\
  16         .target_residency       = 1,\
  17         .power_usage            = p,\
  18         .flags                  = CPUIDLE_FLAG_TIME_VALID,\
  19         .name                   = "WFI",\
  20         .desc                   = "ARM WFI",\
  21 }
  22
  23 /*
  24  * in case power_specified == 1, give a default WFI power value needed
  25  * by some governors
  26  */
  27 #define ARM_CPUIDLE_WFI_STATE ARM_CPUIDLE_WFI_STATE_PWR(UINT_MAX)
  28
  29 #endif