1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * Copyright (c) 2004 Simtec Electronics |
4 | * http://armlinux.simtec.co.uk/ |
5 | * Written by Ben Dooks, <ben@simtec.co.uk> |
6 | */ |
7 | |
8 | /* s3c_pm_init |
9 | * |
10 | * called from board at initialisation time to setup the power |
11 | * management |
12 | */ |
13 | |
14 | #include "pm-common.h" |
15 | |
16 | struct device; |
17 | |
18 | #ifdef CONFIG_SAMSUNG_PM |
19 | |
20 | extern __init int s3c_pm_init(void); |
21 | extern __init int s3c64xx_pm_init(void); |
22 | |
23 | #else |
24 | |
25 | static inline int s3c_pm_init(void) |
26 | { |
27 | return 0; |
28 | } |
29 | |
30 | static inline int s3c64xx_pm_init(void) |
31 | { |
32 | return 0; |
33 | } |
34 | #endif |
35 | |
36 | /* configuration for the IRQ mask over sleep */ |
37 | extern unsigned long s3c_irqwake_intmask; |
38 | extern unsigned long s3c_irqwake_eintmask; |
39 | |
40 | /* per-cpu sleep functions */ |
41 | |
42 | extern void (*pm_cpu_prep)(void); |
43 | extern int (*pm_cpu_sleep)(unsigned long); |
44 | |
45 | /* Flags for PM Control */ |
46 | |
47 | extern unsigned long s3c_pm_flags; |
48 | |
49 | /* from sleep.S */ |
50 | |
51 | extern int s3c2410_cpu_suspend(unsigned long); |
52 | |
53 | #ifdef CONFIG_PM_SLEEP |
54 | extern int s3c_irq_wake(struct irq_data *data, unsigned int state); |
55 | extern void s3c_cpu_resume(void); |
56 | #else |
57 | #define s3c_irq_wake NULL |
58 | #define s3c_cpu_resume NULL |
59 | #endif |
60 | |
61 | #ifdef CONFIG_SAMSUNG_PM |
62 | extern int s3c_irqext_wake(struct irq_data *data, unsigned int state); |
63 | #else |
64 | #define s3c_irqext_wake NULL |
65 | #endif |
66 | |
67 | /** |
68 | * s3c_pm_configure_extint() - ensure pins are correctly set for IRQ |
69 | * |
70 | * Setup all the necessary GPIO pins for waking the system on external |
71 | * interrupt. |
72 | */ |
73 | extern void s3c_pm_configure_extint(void); |
74 | |
75 | #ifdef CONFIG_GPIO_SAMSUNG |
76 | /** |
77 | * samsung_pm_restore_gpios() - restore the state of the gpios after sleep. |
78 | * |
79 | * Restore the state of the GPIO pins after sleep, which may involve ensuring |
80 | * that we do not glitch the state of the pins from that the bootloader's |
81 | * resume code has done. |
82 | */ |
83 | extern void samsung_pm_restore_gpios(void); |
84 | |
85 | /** |
86 | * samsung_pm_save_gpios() - save the state of the GPIOs for restoring after sleep. |
87 | * |
88 | * Save the GPIO states for resotration on resume. See samsung_pm_restore_gpios(). |
89 | */ |
90 | extern void samsung_pm_save_gpios(void); |
91 | #else |
92 | static inline void samsung_pm_restore_gpios(void) {} |
93 | static inline void samsung_pm_save_gpios(void) {} |
94 | #endif |
95 | |
96 | extern void s3c_pm_save_core(void); |
97 | extern void s3c_pm_restore_core(void); |
98 | |