1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (c) 2004 Simtec Electronics 4*4882a593Smuzhiyun * http://armlinux.simtec.co.uk/ 5*4882a593Smuzhiyun * Written by Ben Dooks, <ben@simtec.co.uk> 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun /* s3c_pm_init 9*4882a593Smuzhiyun * 10*4882a593Smuzhiyun * called from board at initialisation time to setup the power 11*4882a593Smuzhiyun * management 12*4882a593Smuzhiyun */ 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun #include "pm-common.h" 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun struct device; 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun #ifdef CONFIG_SAMSUNG_PM 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun extern __init int s3c_pm_init(void); 21*4882a593Smuzhiyun extern __init int s3c64xx_pm_init(void); 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun #else 24*4882a593Smuzhiyun s3c_pm_init(void)25*4882a593Smuzhiyunstatic inline int s3c_pm_init(void) 26*4882a593Smuzhiyun { 27*4882a593Smuzhiyun return 0; 28*4882a593Smuzhiyun } 29*4882a593Smuzhiyun s3c64xx_pm_init(void)30*4882a593Smuzhiyunstatic inline int s3c64xx_pm_init(void) 31*4882a593Smuzhiyun { 32*4882a593Smuzhiyun return 0; 33*4882a593Smuzhiyun } 34*4882a593Smuzhiyun #endif 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun /* configuration for the IRQ mask over sleep */ 37*4882a593Smuzhiyun extern unsigned long s3c_irqwake_intmask; 38*4882a593Smuzhiyun extern unsigned long s3c_irqwake_eintmask; 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun /* per-cpu sleep functions */ 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun extern void (*pm_cpu_prep)(void); 43*4882a593Smuzhiyun extern int (*pm_cpu_sleep)(unsigned long); 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun /* Flags for PM Control */ 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun extern unsigned long s3c_pm_flags; 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun /* from sleep.S */ 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun extern int s3c2410_cpu_suspend(unsigned long); 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun #ifdef CONFIG_PM_SLEEP 54*4882a593Smuzhiyun extern int s3c_irq_wake(struct irq_data *data, unsigned int state); 55*4882a593Smuzhiyun extern void s3c_cpu_resume(void); 56*4882a593Smuzhiyun #else 57*4882a593Smuzhiyun #define s3c_irq_wake NULL 58*4882a593Smuzhiyun #define s3c_cpu_resume NULL 59*4882a593Smuzhiyun #endif 60*4882a593Smuzhiyun 61*4882a593Smuzhiyun #ifdef CONFIG_SAMSUNG_PM 62*4882a593Smuzhiyun extern int s3c_irqext_wake(struct irq_data *data, unsigned int state); 63*4882a593Smuzhiyun #else 64*4882a593Smuzhiyun #define s3c_irqext_wake NULL 65*4882a593Smuzhiyun #endif 66*4882a593Smuzhiyun 67*4882a593Smuzhiyun #ifdef CONFIG_S3C_PM_DEBUG_LED_SMDK 68*4882a593Smuzhiyun /** 69*4882a593Smuzhiyun * s3c_pm_debug_smdkled() - Debug PM suspend/resume via SMDK Board LEDs 70*4882a593Smuzhiyun * @set: set bits for the state of the LEDs 71*4882a593Smuzhiyun * @clear: clear bits for the state of the LEDs. 72*4882a593Smuzhiyun */ 73*4882a593Smuzhiyun extern void s3c_pm_debug_smdkled(u32 set, u32 clear); 74*4882a593Smuzhiyun 75*4882a593Smuzhiyun #else s3c_pm_debug_smdkled(u32 set,u32 clear)76*4882a593Smuzhiyunstatic inline void s3c_pm_debug_smdkled(u32 set, u32 clear) { } 77*4882a593Smuzhiyun #endif /* CONFIG_S3C_PM_DEBUG_LED_SMDK */ 78*4882a593Smuzhiyun 79*4882a593Smuzhiyun /** 80*4882a593Smuzhiyun * s3c_pm_configure_extint() - ensure pins are correctly set for IRQ 81*4882a593Smuzhiyun * 82*4882a593Smuzhiyun * Setup all the necessary GPIO pins for waking the system on external 83*4882a593Smuzhiyun * interrupt. 84*4882a593Smuzhiyun */ 85*4882a593Smuzhiyun extern void s3c_pm_configure_extint(void); 86*4882a593Smuzhiyun 87*4882a593Smuzhiyun #ifdef CONFIG_GPIO_SAMSUNG 88*4882a593Smuzhiyun /** 89*4882a593Smuzhiyun * samsung_pm_restore_gpios() - restore the state of the gpios after sleep. 90*4882a593Smuzhiyun * 91*4882a593Smuzhiyun * Restore the state of the GPIO pins after sleep, which may involve ensuring 92*4882a593Smuzhiyun * that we do not glitch the state of the pins from that the bootloader's 93*4882a593Smuzhiyun * resume code has done. 94*4882a593Smuzhiyun */ 95*4882a593Smuzhiyun extern void samsung_pm_restore_gpios(void); 96*4882a593Smuzhiyun 97*4882a593Smuzhiyun /** 98*4882a593Smuzhiyun * samsung_pm_save_gpios() - save the state of the GPIOs for restoring after sleep. 99*4882a593Smuzhiyun * 100*4882a593Smuzhiyun * Save the GPIO states for resotration on resume. See samsung_pm_restore_gpios(). 101*4882a593Smuzhiyun */ 102*4882a593Smuzhiyun extern void samsung_pm_save_gpios(void); 103*4882a593Smuzhiyun #else samsung_pm_restore_gpios(void)104*4882a593Smuzhiyunstatic inline void samsung_pm_restore_gpios(void) {} samsung_pm_save_gpios(void)105*4882a593Smuzhiyunstatic inline void samsung_pm_save_gpios(void) {} 106*4882a593Smuzhiyun #endif 107*4882a593Smuzhiyun 108*4882a593Smuzhiyun extern void s3c_pm_save_core(void); 109*4882a593Smuzhiyun extern void s3c_pm_restore_core(void); 110