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c863a236 LPC |
1 | /* |
2 | * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de> | |
3 | * JZ4740 SoC power management support | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
70342287 | 6 | * under the terms of the GNU General Public License as published by the |
c863a236 LPC |
7 | * Free Software Foundation; either version 2 of the License, or (at your |
8 | * option) any later version. | |
9 | * | |
10 | * You should have received a copy of the GNU General Public License along | |
11 | * with this program; if not, write to the Free Software Foundation, Inc., | |
12 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
13 | * | |
14 | */ | |
15 | ||
16 | #include <linux/init.h> | |
17 | #include <linux/pm.h> | |
18 | #include <linux/delay.h> | |
19 | #include <linux/suspend.h> | |
20 | ||
21 | #include <asm/mach-jz4740/clock.h> | |
22 | ||
c863a236 LPC |
23 | static int jz4740_pm_enter(suspend_state_t state) |
24 | { | |
c863a236 LPC |
25 | jz4740_clock_suspend(); |
26 | ||
27 | jz4740_clock_set_wait_mode(JZ4740_WAIT_MODE_SLEEP); | |
28 | ||
29 | __asm__(".set\tmips3\n\t" | |
30 | "wait\n\t" | |
31 | ".set\tmips0"); | |
32 | ||
33 | jz4740_clock_set_wait_mode(JZ4740_WAIT_MODE_IDLE); | |
34 | ||
35 | jz4740_clock_resume(); | |
c863a236 LPC |
36 | |
37 | return 0; | |
38 | } | |
39 | ||
2f55ac07 | 40 | static const struct platform_suspend_ops jz4740_pm_ops = { |
c863a236 LPC |
41 | .valid = suspend_valid_only_mem, |
42 | .enter = jz4740_pm_enter, | |
43 | }; | |
44 | ||
45 | static int __init jz4740_pm_init(void) | |
46 | { | |
47 | suspend_set_ops(&jz4740_pm_ops); | |
48 | return 0; | |
49 | ||
50 | } | |
51 | late_initcall(jz4740_pm_init); |