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
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