1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright 2008 Openmoko, Inc. 4 * Copyright 2008 Simtec Electronics 5 * Ben Dooks <ben@simtec.co.uk> 6 * http://armlinux.simtec.co.uk/ 7 * 8 * S3C64XX - PM core support for arch/arm/plat-s3c/pm.c 9 */ 10 11 #ifndef __MACH_S3C64XX_PM_CORE_H 12 #define __MACH_S3C64XX_PM_CORE_H __FILE__ 13 14 #include <linux/serial_s3c.h> 15 #include <linux/delay.h> 16 17 #include "regs-gpio.h" 18 #include "regs-clock.h" 19 #include "map.h" 20 21 static inline void s3c_pm_debug_init_uart(void) 22 { 23 } 24 25 static inline void s3c_pm_arch_prepare_irqs(void) 26 { 27 /* VIC should have already been taken care of */ 28 29 /* clear any pending EINT0 interrupts */ 30 __raw_writel(__raw_readl(S3C64XX_EINT0PEND), S3C64XX_EINT0PEND); 31 } 32 33 static inline void s3c_pm_arch_stop_clocks(void) 34 { 35 } 36 37 static inline void s3c_pm_arch_show_resume_irqs(void) 38 { 39 } 40 41 /* make these defines, we currently do not have any need to change 42 * the IRQ wake controls depending on the CPU we are running on */ 43 #ifdef CONFIG_PM_SLEEP 44 #define s3c_irqwake_eintallow ((1 << 28) - 1) 45 #define s3c_irqwake_intallow (~0) 46 #else 47 #define s3c_irqwake_eintallow 0 48 #define s3c_irqwake_intallow 0 49 #endif 50 51 static inline void s3c_pm_restored_gpios(void) 52 { 53 /* ensure sleep mode has been cleared from the system */ 54 55 __raw_writel(0, S3C64XX_SLPEN); 56 } 57 58 static inline void samsung_pm_saved_gpios(void) 59 { 60 /* turn on the sleep mode and keep it there, as it seems that during 61 * suspend the xCON registers get re-set and thus you can end up with 62 * problems between going to sleep and resuming. 63 */ 64 65 __raw_writel(S3C64XX_SLPEN_USE_xSLP, S3C64XX_SLPEN); 66 } 67 #endif /* __MACH_S3C64XX_PM_CORE_H */ 68