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
21static inline void s3c_pm_debug_init_uart(void)
22{
23}
24
25static 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
33static inline void s3c_pm_arch_stop_clocks(void)
34{
35}
36
37static 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
51static 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
58static 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