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