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