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

   1 /*
   2  * AVR32 AP Power Management.
   3  *
   4  * Copyright (C) 2008 Atmel Corporation
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10 #ifndef __ASM_AVR32_ARCH_PM_H
  11 #define __ASM_AVR32_ARCH_PM_H
  12
  13 /* Possible arguments to the "sleep" instruction */
  14 #define CPU_SLEEP_IDLE          0
  15 #define CPU_SLEEP_FROZEN        1
  16 #define CPU_SLEEP_STANDBY       2
  17 #define CPU_SLEEP_STOP          3
  18 #define CPU_SLEEP_STATIC        5
  19
  20 #ifndef __ASSEMBLY__
  21 extern void cpu_enter_idle(void);
  22
  23 extern bool disable_idle_sleep;
  24
  25 static inline void cpu_disable_idle_sleep(void)
  26 {
  27         disable_idle_sleep = true;
  28 }
  29
  30 static inline void cpu_enable_idle_sleep(void)
  31 {
  32         disable_idle_sleep = false;
  33 }
  34
  35 static inline void cpu_idle_sleep(void)
  36 {
  37         /*
  38          * If we're using the COUNT and COMPARE registers for
  39          * timekeeping, we can't use the IDLE state.
  40          */
  41         if (disable_idle_sleep)
  42                 cpu_relax();
  43         else
  44                 cpu_enter_idle();
  45 }
  46 #endif
  47
  48 #endif /* __ASM_AVR32_ARCH_PM_H */