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1 | /* |
2 | * Copyright (C) 2013 Samsung Electronics Co., Ltd. | |
3 | * Tomasz Figa <t.figa@samsung.com> | |
4 | * Copyright (c) 2004 Simtec Electronics | |
5 | * http://armlinux.simtec.co.uk/ | |
6 | * Written by Ben Dooks, <ben@simtec.co.uk> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #ifndef __PLAT_SAMSUNG_PM_COMMON_H | |
14 | #define __PLAT_SAMSUNG_PM_COMMON_H __FILE__ | |
15 | ||
b2789917 TF |
16 | #include <linux/irq.h> |
17 | ||
18 | /* sleep save info */ | |
19 | ||
20 | /** | |
21 | * struct sleep_save - save information for shared peripherals. | |
22 | * @reg: Pointer to the register to save. | |
23 | * @val: Holder for the value saved from reg. | |
24 | * | |
25 | * This describes a list of registers which is used by the pm core and | |
26 | * other subsystem to save and restore register values over suspend. | |
27 | */ | |
28 | struct sleep_save { | |
29 | void __iomem *reg; | |
30 | unsigned long val; | |
31 | }; | |
32 | ||
33 | #define SAVE_ITEM(x) \ | |
34 | { .reg = (x) } | |
35 | ||
36 | /* helper functions to save/restore lists of registers. */ | |
37 | ||
38 | extern void s3c_pm_do_save(struct sleep_save *ptr, int count); | |
39 | extern void s3c_pm_do_restore(const struct sleep_save *ptr, int count); | |
40 | extern void s3c_pm_do_restore_core(const struct sleep_save *ptr, int count); | |
41 | ||
72551f6c TF |
42 | /* PM debug functions */ |
43 | ||
44 | /** | |
45 | * struct pm_uart_save - save block for core UART | |
46 | * @ulcon: Save value for S3C2410_ULCON | |
47 | * @ucon: Save value for S3C2410_UCON | |
48 | * @ufcon: Save value for S3C2410_UFCON | |
49 | * @umcon: Save value for S3C2410_UMCON | |
50 | * @ubrdiv: Save value for S3C2410_UBRDIV | |
51 | * | |
52 | * Save block for UART registers to be held over sleep and restored if they | |
53 | * are needed (say by debug). | |
54 | */ | |
55 | struct pm_uart_save { | |
56 | u32 ulcon; | |
57 | u32 ucon; | |
58 | u32 ufcon; | |
59 | u32 umcon; | |
60 | u32 ubrdiv; | |
61 | u32 udivslot; | |
62 | }; | |
63 | ||
64 | #ifdef CONFIG_SAMSUNG_PM_DEBUG | |
65 | /** | |
66 | * s3c_pm_dbg() - low level debug function for use in suspend/resume. | |
67 | * @msg: The message to print. | |
68 | * | |
69 | * This function is used mainly to debug the resume process before the system | |
70 | * can rely on printk/console output. It uses the low-level debugging output | |
71 | * routine printascii() to do its work. | |
72 | */ | |
73 | extern void s3c_pm_dbg(const char *msg, ...); | |
74 | ||
75 | /** | |
76 | * s3c_pm_debug_init() - suspend/resume low level debug initialization. | |
77 | * @base: Virtual base of UART to use for suspend/resume debugging. | |
78 | * | |
79 | * This function needs to be called before S3C_PMDBG() can be used, to set up | |
80 | * UART port base address and configuration. | |
81 | */ | |
82 | extern void s3c_pm_debug_init(void); | |
83 | ||
84 | #define S3C_PMDBG(fmt...) s3c_pm_dbg(fmt) | |
85 | ||
86 | extern void s3c_pm_save_uarts(void); | |
87 | extern void s3c_pm_restore_uarts(void); | |
88 | #else | |
89 | #define S3C_PMDBG(fmt...) pr_debug(fmt) | |
90 | #define s3c_pm_debug_init() do { } while (0) | |
91 | ||
92 | static inline void s3c_pm_save_uarts(void) { } | |
93 | static inline void s3c_pm_restore_uarts(void) { } | |
94 | #endif | |
95 | ||
96 | #endif |