1/* 2 * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de> 3 * JZ4740 SoC power management support 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License as published by the 7 * Free Software Foundation; either version 2 of the License, or (at your 8 * option) any later version. 9 * 10 * You should have received a copy of the GNU General Public License along 11 * with this program; if not, write to the Free Software Foundation, Inc., 12 * 675 Mass Ave, Cambridge, MA 02139, USA. 13 * 14 */ 15 16#include <linux/init.h> 17#include <linux/pm.h> 18#include <linux/delay.h> 19#include <linux/suspend.h> 20 21#include <asm/mach-jz4740/clock.h> 22 23#include "clock.h" 24#include "irq.h" 25 26static int jz4740_pm_enter(suspend_state_t state) 27{ 28 jz4740_intc_suspend(); 29 jz4740_clock_suspend(); 30 31 jz4740_clock_set_wait_mode(JZ4740_WAIT_MODE_SLEEP); 32 33 __asm__(".set\tmips3\n\t" 34 "wait\n\t" 35 ".set\tmips0"); 36 37 jz4740_clock_set_wait_mode(JZ4740_WAIT_MODE_IDLE); 38 39 jz4740_clock_resume(); 40 jz4740_intc_resume(); 41 42 return 0; 43} 44 45static struct platform_suspend_ops jz4740_pm_ops = { 46 .valid = suspend_valid_only_mem, 47 .enter = jz4740_pm_enter, 48}; 49 50static int __init jz4740_pm_init(void) 51{ 52 suspend_set_ops(&jz4740_pm_ops); 53 return 0; 54 55} 56late_initcall(jz4740_pm_init); 57