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 #ifdef CONFIG_PM_SLEEP 52 extern int s3c_irq_wake(struct irq_data *data, unsigned int state); 53 extern void s3c_cpu_resume(void); 54 #else 55 #define s3c_irq_wake NULL 56 #define s3c_cpu_resume NULL 57 #endif 58 59 #ifdef CONFIG_SAMSUNG_PM 60 extern int s3c_irqext_wake(struct irq_data *data, unsigned int state); 61 #else 62 #define s3c_irqext_wake NULL 63 #endif 64 65 /** 66 * s3c_pm_configure_extint() - ensure pins are correctly set for IRQ 67 * 68 * Setup all the necessary GPIO pins for waking the system on external 69 * interrupt. 70 */ 71 extern void s3c_pm_configure_extint(void); 72 73 #ifdef CONFIG_GPIO_SAMSUNG 74 /** 75 * samsung_pm_restore_gpios() - restore the state of the gpios after sleep. 76 * 77 * Restore the state of the GPIO pins after sleep, which may involve ensuring 78 * that we do not glitch the state of the pins from that the bootloader's 79 * resume code has done. 80 */ 81 extern void samsung_pm_restore_gpios(void); 82 83 /** 84 * samsung_pm_save_gpios() - save the state of the GPIOs for restoring after sleep. 85 * 86 * Save the GPIO states for resotration on resume. See samsung_pm_restore_gpios(). 87 */ 88 extern void samsung_pm_save_gpios(void); 89 #else 90 static inline void samsung_pm_restore_gpios(void) {} 91 static inline void samsung_pm_save_gpios(void) {} 92 #endif 93 94 extern void s3c_pm_save_core(void); 95 extern void s3c_pm_restore_core(void); 96