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authorJongpill Lee <boyko.lee@samsung.com>2010-10-02 06:13:42 -0400
committerKukjin Kim <kgene.kim@samsung.com>2010-10-20 18:54:57 -0400
commitea31fd4330c823bd156d6484e32a0777c35f200f (patch)
tree1db9c8140448d53a8f404b3581af31d78cd3872a /arch/arm/plat-s5p/irq-pm.c
parentdc425471b6d4e2a3c1d74745433816fc313f30e7 (diff)
ARM: S5PV210: Add Power Management Support
This patch adds suspend-to-ram support for S5PV210. Note. This patch is confirmed on SMDKV210 and SMDKC110 board. Signed-off-by: Jongpill Lee <boyko.lee@samsung.com> Signed-off-by: Sangbeom Kim <sbkim73@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/plat-s5p/irq-pm.c')
-rw-r--r--arch/arm/plat-s5p/irq-pm.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/arch/arm/plat-s5p/irq-pm.c b/arch/arm/plat-s5p/irq-pm.c
new file mode 100644
index 000000000000..dc33b9ecda45
--- /dev/null
+++ b/arch/arm/plat-s5p/irq-pm.c
@@ -0,0 +1,93 @@
1/* linux/arch/arm/plat-s5p/irq-pm.c
2 *
3 * Copyright (c) 2010 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com
5 *
6 * Based on arch/arm/plat-s3c24xx/irq-pm.c,
7 * Copyright (c) 2003,2004 Simtec Electronics
8 * Ben Dooks <ben@simtec.co.uk>
9 * http://armlinux.simtec.co.uk/
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
14*/
15
16#include <linux/init.h>
17#include <linux/module.h>
18#include <linux/interrupt.h>
19#include <linux/sysdev.h>
20
21#include <plat/cpu.h>
22#include <plat/irqs.h>
23#include <plat/pm.h>
24#include <mach/map.h>
25
26#include <mach/regs-gpio.h>
27#include <mach/regs-irq.h>
28
29/* state for IRQs over sleep */
30
31/* default is to allow for EINT0..EINT31, and IRQ_RTC_TIC, IRQ_RTC_ALARM,
32 * as wakeup sources
33 *
34 * set bit to 1 in allow bitfield to enable the wakeup settings on it
35*/
36
37unsigned long s3c_irqwake_intallow = 0x00000006L;
38unsigned long s3c_irqwake_eintallow = 0xffffffffL;
39
40int s3c_irq_wake(unsigned int irqno, unsigned int state)
41{
42 unsigned long irqbit;
43
44 switch (irqno) {
45 case IRQ_RTC_TIC:
46 case IRQ_RTC_ALARM:
47 irqbit = 1 << (irqno + 1 - IRQ_RTC_ALARM);
48 if (!state)
49 s3c_irqwake_intmask |= irqbit;
50 else
51 s3c_irqwake_intmask &= ~irqbit;
52 break;
53 default:
54 return -ENOENT;
55 }
56 return 0;
57}
58
59static struct sleep_save eint_save[] = {
60 SAVE_ITEM(S5P_EINT_CON(0)),
61 SAVE_ITEM(S5P_EINT_CON(1)),
62 SAVE_ITEM(S5P_EINT_CON(2)),
63 SAVE_ITEM(S5P_EINT_CON(3)),
64
65 SAVE_ITEM(S5P_EINT_FLTCON(0)),
66 SAVE_ITEM(S5P_EINT_FLTCON(1)),
67 SAVE_ITEM(S5P_EINT_FLTCON(2)),
68 SAVE_ITEM(S5P_EINT_FLTCON(3)),
69 SAVE_ITEM(S5P_EINT_FLTCON(4)),
70 SAVE_ITEM(S5P_EINT_FLTCON(5)),
71 SAVE_ITEM(S5P_EINT_FLTCON(6)),
72 SAVE_ITEM(S5P_EINT_FLTCON(7)),
73
74 SAVE_ITEM(S5P_EINT_MASK(0)),
75 SAVE_ITEM(S5P_EINT_MASK(1)),
76 SAVE_ITEM(S5P_EINT_MASK(2)),
77 SAVE_ITEM(S5P_EINT_MASK(3)),
78};
79
80int s3c24xx_irq_suspend(struct sys_device *dev, pm_message_t state)
81{
82 s3c_pm_do_save(eint_save, ARRAY_SIZE(eint_save));
83
84 return 0;
85}
86
87int s3c24xx_irq_resume(struct sys_device *dev)
88{
89 s3c_pm_do_restore(eint_save, ARRAY_SIZE(eint_save));
90
91 return 0;
92}
93