1 /* 2 * Copyright 2011 Calxeda, Inc. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms and conditions of the GNU General Public License, 6 * version 2, as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11 * more details. 12 * 13 * You should have received a copy of the GNU General Public License along with 14 * this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 17 #include <linux/cpu_pm.h> 18 #include <linux/init.h> 19 #include <linux/io.h> 20 #include <linux/suspend.h> 21 22 #include <asm/cacheflush.h> 23 #include <asm/proc-fns.h> 24 #include <asm/suspend.h> 25 26 #include "core.h" 27 #include "sysregs.h" 28 29 static int highbank_suspend_finish(unsigned long val) 30 { 31 outer_flush_all(); 32 outer_disable(); 33 34 highbank_set_pwr_suspend(); 35 36 cpu_do_idle(); 37 38 highbank_clear_pwr_request(); 39 return 0; 40 } 41 42 static int highbank_pm_enter(suspend_state_t state) 43 { 44 cpu_pm_enter(); 45 cpu_cluster_pm_enter(); 46 47 highbank_set_cpu_jump(0, cpu_resume); 48 cpu_suspend(0, highbank_suspend_finish); 49 50 cpu_cluster_pm_exit(); 51 cpu_pm_exit(); 52 53 highbank_smc1(0x102, 0x1); 54 if (scu_base_addr) 55 scu_enable(scu_base_addr); 56 return 0; 57 } 58 59 static const struct platform_suspend_ops highbank_pm_ops = { 60 .enter = highbank_pm_enter, 61 .valid = suspend_valid_only_mem, 62 }; 63 64 void __init highbank_pm_init(void) 65 { 66 suspend_set_ops(&highbank_pm_ops); 67 } 68