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-rw-r--r--arch/arm/mach-s3c2410/Kconfig7
-rw-r--r--arch/arm/mach-s3c2410/Makefile2
-rw-r--r--arch/arm/mach-s3c2410/s3c2412-pm.c128
-rw-r--r--arch/arm/mach-s3c2410/s3c2412.c40
4 files changed, 137 insertions, 40 deletions
diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig
index 458b36b2353b..e50a73f93d3d 100644
--- a/arch/arm/mach-s3c2410/Kconfig
+++ b/arch/arm/mach-s3c2410/Kconfig
@@ -176,6 +176,13 @@ config CPU_S3C2412_ONLY
176 !CPU_S3C2440 && !CPU_S3C2442 && CPU_S3C2412 176 !CPU_S3C2440 && !CPU_S3C2442 && CPU_S3C2412
177 default y if CPU_S3C2412 177 default y if CPU_S3C2412
178 178
179config S3C2412_PM
180 bool
181 default y if PM
182 depends on CPU_S3C2412
183 help
184 Internal config node to apply S3C2412 power management
185
179config CPU_S3C2412 186config CPU_S3C2412
180 bool 187 bool
181 depends on ARCH_S3C2410 188 depends on ARCH_S3C2410
diff --git a/arch/arm/mach-s3c2410/Makefile b/arch/arm/mach-s3c2410/Makefile
index 94aef371a529..d66013365b6b 100644
--- a/arch/arm/mach-s3c2410/Makefile
+++ b/arch/arm/mach-s3c2410/Makefile
@@ -38,6 +38,8 @@ obj-$(CONFIG_CPU_S3C2412) += s3c2412-irq.o
38obj-$(CONFIG_CPU_S3C2412) += s3c2412-clock.o 38obj-$(CONFIG_CPU_S3C2412) += s3c2412-clock.o
39obj-dma-$(CONFIG_CPU_S3C2412) += s3c2412-dma.o 39obj-dma-$(CONFIG_CPU_S3C2412) += s3c2412-dma.o
40 40
41obj-$(CONFIG_S3C2412_PM) += s3c2412-pm.o
42
41# 43#
42# S3C244X support 44# S3C244X support
43 45
diff --git a/arch/arm/mach-s3c2410/s3c2412-pm.c b/arch/arm/mach-s3c2410/s3c2412-pm.c
new file mode 100644
index 000000000000..19b63322d259
--- /dev/null
+++ b/arch/arm/mach-s3c2410/s3c2412-pm.c
@@ -0,0 +1,128 @@
1/* linux/arch/arm/mach-s3c2410/s3c2412-pm.c
2 *
3 * Copyright (c) 2006 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
5 *
6 * http://armlinux.simtec.co.uk/.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11*/
12
13#include <linux/kernel.h>
14#include <linux/types.h>
15#include <linux/interrupt.h>
16#include <linux/list.h>
17#include <linux/timer.h>
18#include <linux/init.h>
19#include <linux/sysdev.h>
20#include <linux/platform_device.h>
21
22#include <asm/hardware.h>
23#include <asm/io.h>
24#include <asm/irq.h>
25
26#include <asm/arch/regs-power.h>
27#include <asm/arch/regs-gpioj.h>
28#include <asm/arch/regs-gpio.h>
29#include <asm/arch/regs-dsc.h>
30
31#include "cpu.h"
32#include "pm.h"
33
34#include "s3c2412.h"
35
36static void s3c2412_cpu_suspend(void)
37{
38 unsigned long tmp;
39
40 /* set our standby method to sleep */
41
42 tmp = __raw_readl(S3C2412_PWRCFG);
43 tmp |= S3C2412_PWRCFG_STANDBYWFI_SLEEP;
44 __raw_writel(tmp, S3C2412_PWRCFG);
45
46 /* issue the standby signal into the pm unit. Note, we
47 * issue a write-buffer drain just in case */
48
49 tmp = 0;
50
51 asm("b 1f\n\t"
52 ".align 5\n\t"
53 "1:\n\t"
54 "mcr p15, 0, %0, c7, c10, 4\n\t"
55 "mcr p15, 0, %0, c7, c0, 4" :: "r" (tmp));
56
57 /* we should never get past here */
58
59 panic("sleep resumed to originator?");
60}
61
62static void s3c2412_pm_prepare(void)
63{
64}
65
66static int s3c2412_pm_add(struct sys_device *sysdev)
67{
68 pm_cpu_prep = s3c2412_pm_prepare;
69 pm_cpu_sleep = s3c2412_cpu_suspend;
70
71 return 0;
72}
73
74static struct sleep_save s3c2412_sleep[] = {
75 SAVE_ITEM(S3C2412_DSC0),
76 SAVE_ITEM(S3C2412_DSC1),
77 SAVE_ITEM(S3C2413_GPJDAT),
78 SAVE_ITEM(S3C2413_GPJCON),
79 SAVE_ITEM(S3C2413_GPJUP),
80
81 /* save the PWRCFG to get back to original sleep method */
82
83 SAVE_ITEM(S3C2412_PWRCFG),
84
85 /* save the sleep configuration anyway, just in case these
86 * get damaged during wakeup */
87
88 SAVE_ITEM(S3C2412_GPBSLPCON),
89 SAVE_ITEM(S3C2412_GPCSLPCON),
90 SAVE_ITEM(S3C2412_GPDSLPCON),
91 SAVE_ITEM(S3C2412_GPESLPCON),
92 SAVE_ITEM(S3C2412_GPFSLPCON),
93 SAVE_ITEM(S3C2412_GPGSLPCON),
94 SAVE_ITEM(S3C2412_GPHSLPCON),
95 SAVE_ITEM(S3C2413_GPJSLPCON),
96};
97
98static int s3c2412_pm_suspend(struct sys_device *dev, pm_message_t state)
99{
100 s3c2410_pm_do_save(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep));
101 return 0;
102}
103
104static int s3c2412_pm_resume(struct sys_device *dev)
105{
106 unsigned long tmp;
107
108 tmp = __raw_readl(S3C2412_PWRCFG);
109 tmp &= ~S3C2412_PWRCFG_STANDBYWFI_MASK;
110 tmp |= S3C2412_PWRCFG_STANDBYWFI_IDLE;
111 __raw_writel(tmp, S3C2412_PWRCFG);
112
113 s3c2410_pm_do_restore(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep));
114 return 0;
115}
116
117static struct sysdev_driver s3c2412_pm_driver = {
118 .add = s3c2412_pm_add,
119 .suspend = s3c2412_pm_suspend,
120 .resume = s3c2412_pm_resume,
121};
122
123static __init int s3c2412_pm_init(void)
124{
125 return sysdev_driver_register(&s3c2412_sysclass, &s3c2412_pm_driver);
126}
127
128arch_initcall(s3c2412_pm_init);
diff --git a/arch/arm/mach-s3c2410/s3c2412.c b/arch/arm/mach-s3c2410/s3c2412.c
index ea25078cf4f8..e76431c41461 100644
--- a/arch/arm/mach-s3c2410/s3c2412.c
+++ b/arch/arm/mach-s3c2410/s3c2412.c
@@ -158,48 +158,8 @@ void __init s3c2412_init_clocks(int xtal)
158 * as a driver which may support both 2410 and 2440 may try and use it. 158 * as a driver which may support both 2410 and 2440 may try and use it.
159*/ 159*/
160 160
161#ifdef CONFIG_PM
162static struct sleep_save s3c2412_sleep[] = {
163 SAVE_ITEM(S3C2412_DSC0),
164 SAVE_ITEM(S3C2412_DSC1),
165 SAVE_ITEM(S3C2413_GPJDAT),
166 SAVE_ITEM(S3C2413_GPJCON),
167 SAVE_ITEM(S3C2413_GPJUP),
168
169 /* save the sleep configuration anyway, just in case these
170 * get damaged during wakeup */
171
172 SAVE_ITEM(S3C2412_GPBSLPCON),
173 SAVE_ITEM(S3C2412_GPCSLPCON),
174 SAVE_ITEM(S3C2412_GPDSLPCON),
175 SAVE_ITEM(S3C2412_GPESLPCON),
176 SAVE_ITEM(S3C2412_GPFSLPCON),
177 SAVE_ITEM(S3C2412_GPGSLPCON),
178 SAVE_ITEM(S3C2412_GPHSLPCON),
179 SAVE_ITEM(S3C2413_GPJSLPCON),
180};
181
182static int s3c2412_suspend(struct sys_device *dev, pm_message_t state)
183{
184 s3c2410_pm_do_save(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep));
185 return 0;
186}
187
188static int s3c2412_resume(struct sys_device *dev)
189{
190 s3c2410_pm_do_restore(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep));
191 return 0;
192}
193
194#else
195#define s3c2412_suspend NULL
196#define s3c2412_resume NULL
197#endif
198
199struct sysdev_class s3c2412_sysclass = { 161struct sysdev_class s3c2412_sysclass = {
200 set_kset_name("s3c2412-core"), 162 set_kset_name("s3c2412-core"),
201 .suspend = s3c2412_suspend,
202 .resume = s3c2412_resume
203}; 163};
204 164
205static int __init s3c2412_core_init(void) 165static int __init s3c2412_core_init(void)