arch/arm/mach-shmobile/cpuidle.c

   1 /*
   2  * CPUIdle support code for SH-Mobile ARM
   3  *
   4  *  Copyright (C) 2011 Magnus Damm
   5  *
   6  * This file is subject to the terms and conditions of the GNU General Public
   7  * License.  See the file "COPYING" in the main directory of this archive
   8  * for more details.
   9  */
  10
  11 #include <linux/pm.h>
  12 #include <linux/cpuidle.h>
  13 #include <linux/suspend.h>
  14 #include <linux/module.h>
  15 #include <linux/err.h>
  16 #include <asm/cpuidle.h>
  17 #include <asm/io.h>
  18
  19 static struct cpuidle_driver shmobile_cpuidle_default_driver = {
  20         .name                   = "shmobile_cpuidle",
  21         .owner                  = THIS_MODULE,
  22         .states[0]              = ARM_CPUIDLE_WFI_STATE,
  23         .safe_state_index       = 0, /* C1 */
  24         .state_count            = 1,
  25 };
  26
  27 static struct cpuidle_driver *cpuidle_drv = &shmobile_cpuidle_default_driver;
  28
  29 void __init shmobile_cpuidle_set_driver(struct cpuidle_driver *drv)
  30 {
  31         cpuidle_drv = drv;
  32 }
  33
  34 int __init shmobile_cpuidle_init(void)
  35 {
  36         return cpuidle_register(cpuidle_drv, NULL);
  37 }