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/psci.h> 20 #include <linux/suspend.h> 21 22 #include <asm/suspend.h> 23 24 #include <uapi/linux/psci.h> 25 26 #define HIGHBANK_SUSPEND_PARAM \ 27 ((0 << PSCI_0_2_POWER_STATE_ID_SHIFT) | \ 28 (1 << PSCI_0_2_POWER_STATE_AFFL_SHIFT) | \ 29 (PSCI_POWER_STATE_TYPE_POWER_DOWN << PSCI_0_2_POWER_STATE_TYPE_SHIFT)) 30 highbank_suspend_finish(unsigned long val)31static int highbank_suspend_finish(unsigned long val) 32 { 33 return psci_ops.cpu_suspend(HIGHBANK_SUSPEND_PARAM, __pa(cpu_resume)); 34 } 35 highbank_pm_enter(suspend_state_t state)36static int highbank_pm_enter(suspend_state_t state) 37 { 38 cpu_pm_enter(); 39 cpu_cluster_pm_enter(); 40 41 cpu_suspend(0, highbank_suspend_finish); 42 43 cpu_cluster_pm_exit(); 44 cpu_pm_exit(); 45 46 return 0; 47 } 48 49 static const struct platform_suspend_ops highbank_pm_ops = { 50 .enter = highbank_pm_enter, 51 .valid = suspend_valid_only_mem, 52 }; 53 highbank_pm_init(void)54void __init highbank_pm_init(void) 55 { 56 if (!psci_ops.cpu_suspend) 57 return; 58 59 suspend_set_ops(&highbank_pm_ops); 60 } 61
