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 16struct device; 17 18#ifdef CONFIG_SAMSUNG_PM 19 20extern __init int s3c_pm_init(void); 21extern __init int s3c64xx_pm_init(void); 22 23#else 24 25static inline int s3c_pm_init(void) 26{ 27 return 0; 28} 29 30static inline int s3c64xx_pm_init(void) 31{ 32 return 0; 33} 34#endif 35 36/* configuration for the IRQ mask over sleep */ 37extern unsigned long s3c_irqwake_intmask; 38extern unsigned long s3c_irqwake_eintmask; 39 40/* per-cpu sleep functions */ 41 42extern void (*pm_cpu_prep)(void); 43extern int (*pm_cpu_sleep)(unsigned long); 44 45/* Flags for PM Control */ 46 47extern unsigned long s3c_pm_flags; 48 49/* from sleep.S */ 50 51extern int s3c2410_cpu_suspend(unsigned long); 52 53#ifdef CONFIG_PM_SLEEP 54extern int s3c_irq_wake(struct irq_data *data, unsigned int state); 55extern 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 62extern 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 */ 73extern 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*/ 83extern 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 */ 90extern void samsung_pm_save_gpios(void); 91#else 92static inline void samsung_pm_restore_gpios(void) {} 93static inline void samsung_pm_save_gpios(void) {} 94#endif 95 96extern void s3c_pm_save_core(void); 97extern void s3c_pm_restore_core(void); 98