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8b61f374 RH |
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 | ||
1ddda1cd | 17 | #include <linux/cpu_pm.h> |
8b61f374 | 18 | #include <linux/init.h> |
8b61f374 RH |
19 | #include <linux/suspend.h> |
20 | ||
8b61f374 | 21 | #include <asm/suspend.h> |
dd68eb02 | 22 | #include <asm/psci.h> |
8b61f374 RH |
23 | |
24 | static int highbank_suspend_finish(unsigned long val) | |
25 | { | |
dd68eb02 RH |
26 | const struct psci_power_state ps = { |
27 | .type = PSCI_POWER_STATE_TYPE_POWER_DOWN, | |
28 | .affinity_level = 1, | |
29 | }; | |
1ddda1cd | 30 | |
dd68eb02 | 31 | return psci_ops.cpu_suspend(ps, __pa(cpu_resume)); |
8b61f374 RH |
32 | } |
33 | ||
34 | static int highbank_pm_enter(suspend_state_t state) | |
35 | { | |
1ddda1cd RH |
36 | cpu_pm_enter(); |
37 | cpu_cluster_pm_enter(); | |
38 | ||
8b61f374 RH |
39 | cpu_suspend(0, highbank_suspend_finish); |
40 | ||
1ddda1cd RH |
41 | cpu_cluster_pm_exit(); |
42 | cpu_pm_exit(); | |
43 | ||
8b61f374 RH |
44 | return 0; |
45 | } | |
46 | ||
47 | static const struct platform_suspend_ops highbank_pm_ops = { | |
48 | .enter = highbank_pm_enter, | |
49 | .valid = suspend_valid_only_mem, | |
50 | }; | |
51 | ||
a283580c | 52 | void __init highbank_pm_init(void) |
8b61f374 | 53 | { |
dd68eb02 RH |
54 | if (!psci_ops.cpu_suspend) |
55 | return; | |
56 | ||
8b61f374 | 57 | suspend_set_ops(&highbank_pm_ops); |
8b61f374 | 58 | } |