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a21765a7 | 1 | /* linux/include/asm-arm/plat-s3c24xx/pm.h |
1da177e4 LT |
2 | * |
3 | * Copyright (c) 2004 Simtec Electronics | |
6419711a | 4 | * http://armlinux.simtec.co.uk/ |
1da177e4 LT |
5 | * Written by Ben Dooks, <ben@simtec.co.uk> |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | /* s3c2410_pm_init | |
13 | * | |
14 | * called from board at initialisation time to setup the power | |
15 | * management | |
16 | */ | |
17 | ||
18 | #ifdef CONFIG_PM | |
19 | ||
20 | extern __init int s3c2410_pm_init(void); | |
21 | ||
22 | #else | |
23 | ||
24 | static inline int s3c2410_pm_init(void) | |
25 | { | |
26 | return 0; | |
27 | } | |
28 | #endif | |
29 | ||
30 | /* configuration for the IRQ mask over sleep */ | |
31 | extern unsigned long s3c_irqwake_intmask; | |
32 | extern unsigned long s3c_irqwake_eintmask; | |
33 | ||
34 | /* IRQ masks for IRQs allowed to go to sleep (see irq.c) */ | |
35 | extern unsigned long s3c_irqwake_intallow; | |
36 | extern unsigned long s3c_irqwake_eintallow; | |
37 | ||
0033a2f0 BD |
38 | /* per-cpu sleep functions */ |
39 | ||
40 | extern void (*pm_cpu_prep)(void); | |
41 | extern void (*pm_cpu_sleep)(void); | |
42 | ||
1da177e4 LT |
43 | /* Flags for PM Control */ |
44 | ||
45 | extern unsigned long s3c_pm_flags; | |
46 | ||
47 | /* from sleep.S */ | |
48 | ||
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49 | extern int s3c2410_cpu_save(unsigned long *saveblk); |
50 | extern void s3c2410_cpu_suspend(void); | |
1da177e4 LT |
51 | extern void s3c2410_cpu_resume(void); |
52 | ||
6419711a | 53 | extern unsigned long s3c_sleep_save_phys; |
1da177e4 LT |
54 | |
55 | /* sleep save info */ | |
56 | ||
6419711a BD |
57 | /** |
58 | * struct sleep_save - save information for shared peripherals. | |
59 | * @reg: Pointer to the register to save. | |
60 | * @val: Holder for the value saved from reg. | |
61 | * | |
62 | * This describes a list of registers which is used by the pm core and | |
63 | * other subsystem to save and restore register values over suspend. | |
64 | */ | |
1da177e4 LT |
65 | struct sleep_save { |
66 | void __iomem *reg; | |
67 | unsigned long val; | |
68 | }; | |
69 | ||
70 | #define SAVE_ITEM(x) \ | |
71 | { .reg = (x) } | |
72 | ||
6419711a BD |
73 | /* helper functions to save/restore lists of registers. */ |
74 | ||
75 | extern void s3c_pm_do_save(struct sleep_save *ptr, int count); | |
76 | extern void s3c_pm_do_restore(struct sleep_save *ptr, int count); | |
77 | extern void s3c_pm_do_restore_core(struct sleep_save *ptr, int count); | |
1e582fc7 BD |
78 | |
79 | #ifdef CONFIG_PM | |
80 | extern int s3c24xx_irq_suspend(struct sys_device *dev, pm_message_t state); | |
81 | extern int s3c24xx_irq_resume(struct sys_device *dev); | |
82 | #else | |
83 | #define s3c24xx_irq_suspend NULL | |
84 | #define s3c24xx_irq_resume NULL | |
85 | #endif | |
6419711a BD |
86 | |
87 | /* PM debug functions */ | |
88 | ||
89 | #ifdef CONFIG_S3C2410_PM_DEBUG | |
90 | /** | |
91 | * s3c_pm_dbg() - low level debug function for use in suspend/resume. | |
92 | * @msg: The message to print. | |
93 | * | |
94 | * This function is used mainly to debug the resume process before the system | |
95 | * can rely on printk/console output. It uses the low-level debugging output | |
96 | * routine printascii() to do its work. | |
97 | */ | |
98 | extern void s3c_pm_dbg(const char *msg, ...); | |
99 | ||
100 | #define S3C_PMDBG(fmt...) s3c_pm_dbg(fmt) | |
101 | #else | |
102 | #define S3C_PMDBG(fmt...) printk(KERN_DEBUG fmt) | |
103 | #endif |