| | 1 | /* arch/arm/plat-samsung/include/plat/pm.h |
| | 2 | * |
| | 3 | * Copyright (c) 2004 Simtec Electronics |
| | 4 | * http://armlinux.simtec.co.uk/ |
| | 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 | /* s3c_pm_init |
| | 13 | * |
| | 14 | * called from board at initialisation time to setup the power |
| | 15 | * management |
| | 16 | */ |
| | 17 | |
| | 18 | #include <plat/pm-common.h> |
| | 19 | |
| | 20 | struct device; |
| | 21 | |
| | 22 | #ifdef CONFIG_SAMSUNG_PM |
| | 23 | |
| | 24 | extern __init int s3c_pm_init(void); |
| | 25 | extern __init int s3c64xx_pm_init(void); |
| | 26 | |
| | 27 | #else |
| | 28 | |
| | 29 | static inline int s3c_pm_init(void) |
| | 30 | { |
| | 31 | return 0; |
| | 32 | } |
| | 33 | |
| | 34 | static inline int s3c64xx_pm_init(void) |
| | 35 | { |
| | 36 | return 0; |
| | 37 | } |
| | 38 | #endif |
| | 39 | |
| | 40 | /* configuration for the IRQ mask over sleep */ |
| | 41 | extern unsigned long s3c_irqwake_intmask; |
| | 42 | extern unsigned long s3c_irqwake_eintmask; |
| | 43 | |
| | 44 | /* IRQ masks for IRQs allowed to go to sleep (see irq.c) */ |
| | 45 | extern unsigned long s3c_irqwake_intallow; |
| | 46 | #ifdef CONFIG_PM_SLEEP |
| | 47 | extern unsigned long s3c_irqwake_eintallow; |
| | 48 | #else |
| | 49 | #define s3c_irqwake_eintallow 0 |
| | 50 | #endif |
| | 51 | |
| | 52 | /* per-cpu sleep functions */ |
| | 53 | |
| | 54 | extern void (*pm_cpu_prep)(void); |
| | 55 | extern int (*pm_cpu_sleep)(unsigned long); |
| | 56 | |
| | 57 | /* Flags for PM Control */ |
| | 58 | |
| | 59 | extern unsigned long s3c_pm_flags; |
| | 60 | |
| | 61 | /* from sleep.S */ |
| | 62 | |
| | 63 | extern int s3c2410_cpu_suspend(unsigned long); |
| | 64 | |
| | 65 | #ifdef CONFIG_PM_SLEEP |
| | 66 | extern int s3c_irq_wake(struct irq_data *data, unsigned int state); |
| | 67 | extern void s3c_cpu_resume(void); |
| | 68 | #else |
| | 69 | #define s3c_irq_wake NULL |
| | 70 | #define s3c_cpu_resume NULL |
| | 71 | #endif |
| | 72 | |
| | 73 | #ifdef CONFIG_SAMSUNG_PM |
| | 74 | extern int s3c_irqext_wake(struct irq_data *data, unsigned int state); |
| | 75 | #else |
| | 76 | #define s3c_irqext_wake NULL |
| | 77 | #endif |
| | 78 | |
| | 79 | #ifdef CONFIG_S3C_PM_DEBUG_LED_SMDK |
| | 80 | /** |
| | 81 | * s3c_pm_debug_smdkled() - Debug PM suspend/resume via SMDK Board LEDs |
| | 82 | * @set: set bits for the state of the LEDs |
| | 83 | * @clear: clear bits for the state of the LEDs. |
| | 84 | */ |
| | 85 | extern void s3c_pm_debug_smdkled(u32 set, u32 clear); |
| | 86 | |
| | 87 | #else |
| | 88 | static inline void s3c_pm_debug_smdkled(u32 set, u32 clear) { } |
| | 89 | #endif /* CONFIG_S3C_PM_DEBUG_LED_SMDK */ |
| | 90 | |
| | 91 | /** |
| | 92 | * s3c_pm_configure_extint() - ensure pins are correctly set for IRQ |
| | 93 | * |
| | 94 | * Setup all the necessary GPIO pins for waking the system on external |
| | 95 | * interrupt. |
| | 96 | */ |
| | 97 | extern void s3c_pm_configure_extint(void); |
| | 98 | |
| | 99 | #ifdef CONFIG_GPIO_SAMSUNG |
| | 100 | /** |
| | 101 | * samsung_pm_restore_gpios() - restore the state of the gpios after sleep. |
| | 102 | * |
| | 103 | * Restore the state of the GPIO pins after sleep, which may involve ensuring |
| | 104 | * that we do not glitch the state of the pins from that the bootloader's |
| | 105 | * resume code has done. |
| | 106 | */ |
| | 107 | extern void samsung_pm_restore_gpios(void); |
| | 108 | |
| | 109 | /** |
| | 110 | * samsung_pm_save_gpios() - save the state of the GPIOs for restoring after sleep. |
| | 111 | * |
| | 112 | * Save the GPIO states for resotration on resume. See samsung_pm_restore_gpios(). |
| | 113 | */ |
| | 114 | extern void samsung_pm_save_gpios(void); |
| | 115 | #else |
| | 116 | static inline void samsung_pm_restore_gpios(void) {} |
| | 117 | static inline void samsung_pm_save_gpios(void) {} |
| | 118 | #endif |
| | 119 | |
| | 120 | extern void s3c_pm_save_core(void); |
| | 121 | extern void s3c_pm_restore_core(void); |
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