1 /* 2 * Suspend-to-RAM 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/suspend.h> 13 #include <linux/module.h> 14 #include <linux/err.h> 15 #include <linux/cpu.h> 16 17 #include <asm/io.h> 18 #include <asm/system_misc.h> 19 20 static int shmobile_suspend_default_enter(suspend_state_t suspend_state) 21 { 22 cpu_do_idle(); 23 return 0; 24 } 25 26 static int shmobile_suspend_begin(suspend_state_t state) 27 { 28 cpu_idle_poll_ctrl(true); 29 return 0; 30 } 31 32 static void shmobile_suspend_end(void) 33 { 34 cpu_idle_poll_ctrl(false); 35 } 36 37 struct platform_suspend_ops shmobile_suspend_ops = { 38 .begin = shmobile_suspend_begin, 39 .end = shmobile_suspend_end, 40 .enter = shmobile_suspend_default_enter, 41 .valid = suspend_valid_only_mem, 42 }; 43 44 int __init shmobile_suspend_init(void) 45 { 46 suspend_set_ops(&shmobile_suspend_ops); 47 return 0; 48 } 49