diff options
Diffstat (limited to 'kernel/arch/arm/plat-samsung/include/plat/pm.h')
-rw-r--r-- | kernel/arch/arm/plat-samsung/include/plat/pm.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/kernel/arch/arm/plat-samsung/include/plat/pm.h b/kernel/arch/arm/plat-samsung/include/plat/pm.h new file mode 100644 index 000000000..7f415ce74 --- /dev/null +++ b/kernel/arch/arm/plat-samsung/include/plat/pm.h @@ -0,0 +1,121 @@ +/* arch/arm/plat-samsung/include/plat/pm.h + * + * Copyright (c) 2004 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Written by Ben Dooks, <ben@simtec.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +/* s3c_pm_init + * + * called from board at initialisation time to setup the power + * management +*/ + +#include <plat/pm-common.h> + +struct device; + +#ifdef CONFIG_SAMSUNG_PM + +extern __init int s3c_pm_init(void); +extern __init int s3c64xx_pm_init(void); + +#else + +static inline int s3c_pm_init(void) +{ + return 0; +} + +static inline int s3c64xx_pm_init(void) +{ + return 0; +} +#endif + +/* configuration for the IRQ mask over sleep */ +extern unsigned long s3c_irqwake_intmask; +extern unsigned long s3c_irqwake_eintmask; + +/* IRQ masks for IRQs allowed to go to sleep (see irq.c) */ +extern unsigned long s3c_irqwake_intallow; +#ifdef CONFIG_PM_SLEEP +extern unsigned long s3c_irqwake_eintallow; +#else +#define s3c_irqwake_eintallow 0 +#endif + +/* per-cpu sleep functions */ + +extern void (*pm_cpu_prep)(void); +extern int (*pm_cpu_sleep)(unsigned long); + +/* Flags for PM Control */ + +extern unsigned long s3c_pm_flags; + +/* from sleep.S */ + +extern int s3c2410_cpu_suspend(unsigned long); + +#ifdef CONFIG_PM_SLEEP +extern int s3c_irq_wake(struct irq_data *data, unsigned int state); +extern void s3c_cpu_resume(void); +#else +#define s3c_irq_wake NULL +#define s3c_cpu_resume NULL +#endif + +#ifdef CONFIG_SAMSUNG_PM +extern int s3c_irqext_wake(struct irq_data *data, unsigned int state); +#else +#define s3c_irqext_wake NULL +#endif + +#ifdef CONFIG_S3C_PM_DEBUG_LED_SMDK +/** + * s3c_pm_debug_smdkled() - Debug PM suspend/resume via SMDK Board LEDs + * @set: set bits for the state of the LEDs + * @clear: clear bits for the state of the LEDs. + */ +extern void s3c_pm_debug_smdkled(u32 set, u32 clear); + +#else +static inline void s3c_pm_debug_smdkled(u32 set, u32 clear) { } +#endif /* CONFIG_S3C_PM_DEBUG_LED_SMDK */ + +/** + * s3c_pm_configure_extint() - ensure pins are correctly set for IRQ + * + * Setup all the necessary GPIO pins for waking the system on external + * interrupt. + */ +extern void s3c_pm_configure_extint(void); + +#ifdef CONFIG_GPIO_SAMSUNG +/** + * samsung_pm_restore_gpios() - restore the state of the gpios after sleep. + * + * Restore the state of the GPIO pins after sleep, which may involve ensuring + * that we do not glitch the state of the pins from that the bootloader's + * resume code has done. +*/ +extern void samsung_pm_restore_gpios(void); + +/** + * samsung_pm_save_gpios() - save the state of the GPIOs for restoring after sleep. + * + * Save the GPIO states for resotration on resume. See samsung_pm_restore_gpios(). + */ +extern void samsung_pm_save_gpios(void); +#else +static inline void samsung_pm_restore_gpios(void) {} +static inline void samsung_pm_save_gpios(void) {} +#endif + +extern void s3c_pm_save_core(void); +extern void s3c_pm_restore_core(void); |