| 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 | #include "core.h" |
| 16 | |
| 17 | #define HIGHBANK_SUSPEND_PARAM \ |
| 18 | ((0 << PSCI_0_2_POWER_STATE_ID_SHIFT) | \ |
| 19 | (1 << PSCI_0_2_POWER_STATE_AFFL_SHIFT) | \ |
| 20 | (PSCI_POWER_STATE_TYPE_POWER_DOWN << PSCI_0_2_POWER_STATE_TYPE_SHIFT)) |
| 21 | |
| 22 | static int highbank_suspend_finish(unsigned long val) |
| 23 | { |
| 24 | return psci_ops.cpu_suspend(HIGHBANK_SUSPEND_PARAM, __pa(cpu_resume)); |
| 25 | } |
| 26 | |
| 27 | static int highbank_pm_enter(suspend_state_t state) |
| 28 | { |
| 29 | cpu_pm_enter(); |
| 30 | cpu_cluster_pm_enter(); |
| 31 | |
| 32 | cpu_suspend(0, highbank_suspend_finish); |
| 33 | |
| 34 | cpu_cluster_pm_exit(); |
| 35 | cpu_pm_exit(); |
| 36 | |
| 37 | return 0; |
| 38 | } |
| 39 | |
| 40 | static const struct platform_suspend_ops highbank_pm_ops = { |
| 41 | .enter = highbank_pm_enter, |
| 42 | .valid = suspend_valid_only_mem, |
| 43 | }; |
| 44 | |
| 45 | void __init highbank_pm_init(void) |
| 46 | { |
| 47 | if (!psci_ops.cpu_suspend) |
| 48 | return; |
| 49 | |
| 50 | suspend_set_ops(ops: &highbank_pm_ops); |
| 51 | } |
| 52 |