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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> |
be120397 | 19 | #include <linux/psci.h> |
8b61f374 RH |
20 | #include <linux/suspend.h> |
21 | ||
8b61f374 | 22 | #include <asm/suspend.h> |
be120397 MR |
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)) | |
8b61f374 RH |
30 | |
31 | static int highbank_suspend_finish(unsigned long val) | |
32 | { | |
be120397 | 33 | return psci_ops.cpu_suspend(HIGHBANK_SUSPEND_PARAM, __pa(cpu_resume)); |
8b61f374 RH |
34 | } |
35 | ||
36 | static int highbank_pm_enter(suspend_state_t state) | |
37 | { | |
1ddda1cd RH |
38 | cpu_pm_enter(); |
39 | cpu_cluster_pm_enter(); | |
40 | ||
8b61f374 RH |
41 | cpu_suspend(0, highbank_suspend_finish); |
42 | ||
1ddda1cd RH |
43 | cpu_cluster_pm_exit(); |
44 | cpu_pm_exit(); | |
45 | ||
8b61f374 RH |
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 | ||
a283580c | 54 | void __init highbank_pm_init(void) |
8b61f374 | 55 | { |
dd68eb02 RH |
56 | if (!psci_ops.cpu_suspend) |
57 | return; | |
58 | ||
8b61f374 | 59 | suspend_set_ops(&highbank_pm_ops); |
8b61f374 | 60 | } |