diff options
author | Ben Dooks <ben-linux@fluff.org> | 2007-02-11 12:31:01 -0500 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-02-11 12:36:09 -0500 |
commit | a21765a70ec06be175d3997320a83fa66fcc8955 (patch) | |
tree | 24bdbf437a9bd5b7c1af05898f5aa25dccf67fe9 /arch/arm/mach-s3c2412/pm.c | |
parent | d19494b187b20e363f9b434b9ceab4159ac88324 (diff) |
[ARM] 4157/2: S3C24XX: move arch/arch/mach-s3c2410 into cpu components
The following patch and script moves the arch/arm/mach-s3c2410
directory into arch/arm/plat-s3c24xx for the generic core code
and inti arch/arm/mach-s3c{cpu} for the cpu/machine support files
Include directory include/asm-arm/plat-s3c24xx is added for the
core include files.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-s3c2412/pm.c')
-rw-r--r-- | arch/arm/mach-s3c2412/pm.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2412/pm.c b/arch/arm/mach-s3c2412/pm.c new file mode 100644 index 000000000000..8988dac388a9 --- /dev/null +++ b/arch/arm/mach-s3c2412/pm.c | |||
@@ -0,0 +1,128 @@ | |||
1 | /* linux/arch/arm/mach-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 <asm/plat-s3c24xx/cpu.h> | ||
32 | #include <asm/plat-s3c24xx/pm.h> | ||
33 | |||
34 | #include <asm/plat-s3c24xx/s3c2412.h> | ||
35 | |||
36 | static 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 | |||
62 | static void s3c2412_pm_prepare(void) | ||
63 | { | ||
64 | } | ||
65 | |||
66 | static 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 | |||
74 | static 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 | |||
98 | static 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 | |||
104 | static 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 | |||
117 | static struct sysdev_driver s3c2412_pm_driver = { | ||
118 | .add = s3c2412_pm_add, | ||
119 | .suspend = s3c2412_pm_suspend, | ||
120 | .resume = s3c2412_pm_resume, | ||
121 | }; | ||
122 | |||
123 | static __init int s3c2412_pm_init(void) | ||
124 | { | ||
125 | return sysdev_driver_register(&s3c2412_sysclass, &s3c2412_pm_driver); | ||
126 | } | ||
127 | |||
128 | arch_initcall(s3c2412_pm_init); | ||