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 <asm/io.h> 16 #include <asm/system_misc.h> 17 18 static int shmobile_suspend_default_enter(suspend_state_t suspend_state) 19 { 20 cpu_do_idle(); 21 return 0; 22 } 23 24 static int shmobile_suspend_begin(suspend_state_t state) 25 { 26 disable_hlt(); 27 return 0; 28 } 29 30 static void shmobile_suspend_end(void) 31 { 32 enable_hlt(); 33 } 34 35 struct platform_suspend_ops shmobile_suspend_ops = { 36 .begin = shmobile_suspend_begin, 37 .end = shmobile_suspend_end, 38 .enter = shmobile_suspend_default_enter, 39 .valid = suspend_valid_only_mem, 40 }; 41 42 static int __init shmobile_suspend_init(void) 43 { 44 suspend_set_ops(&shmobile_suspend_ops); 45 return 0; 46 } 47 late_initcall(shmobile_suspend_init); 48