arch/arm/mach-s3c/pm-core-s3c64xx.h

   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 */