1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright 2011 Calxeda, Inc. 4 */ 5 6 #include <linux/cpu_pm.h> 7 #include <linux/init.h> 8 #include <linux/psci.h> 9 #include <linux/suspend.h> 10 11 #include <asm/suspend.h> 12 13 #include <uapi/linux/psci.h> 14 15 #define HIGHBANK_SUSPEND_PARAM \ 16 ((0 << PSCI_0_2_POWER_STATE_ID_SHIFT) | \ 17 (1 << PSCI_0_2_POWER_STATE_AFFL_SHIFT) | \ 18 (PSCI_POWER_STATE_TYPE_POWER_DOWN << PSCI_0_2_POWER_STATE_TYPE_SHIFT)) 19 highbank_suspend_finish(unsigned long val)20static int highbank_suspend_finish(unsigned long val) 21 { 22 return psci_ops.cpu_suspend(HIGHBANK_SUSPEND_PARAM, __pa(cpu_resume)); 23 } 24 highbank_pm_enter(suspend_state_t state)25static int highbank_pm_enter(suspend_state_t state) 26 { 27 cpu_pm_enter(); 28 cpu_cluster_pm_enter(); 29 30 cpu_suspend(0, highbank_suspend_finish); 31 32 cpu_cluster_pm_exit(); 33 cpu_pm_exit(); 34 35 return 0; 36 } 37 38 static const struct platform_suspend_ops highbank_pm_ops = { 39 .enter = highbank_pm_enter, 40 .valid = suspend_valid_only_mem, 41 }; 42 highbank_pm_init(void)43void __init highbank_pm_init(void) 44 { 45 if (!psci_ops.cpu_suspend) 46 return; 47 48 suspend_set_ops(&highbank_pm_ops); 49 } 50