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authorKevin Hilman <khilman@deeprootsystems.com>2009-05-28 13:56:16 -0400
committerKevin Hilman <khilman@deeprootsystems.com>2009-05-28 13:58:50 -0400
commit8bd229492209c0c7d050e2f9a600c12f035d72f7 (patch)
treec76039df215b1c3ba58adb23845baa4af40f25fe /arch/arm/mach-omap2/pm.c
parenta330bd4750bc84aebb28faddd525d0bcbdde262d (diff)
OMAP2/3: PM: push core PM code from linux-omap
This patch is to sync the core linux-omap PM code with mainline. This code has evolved and been used for a while the linux-omap tree, but the attempt here is to finally get this into mainline. Following this will be a series of patches from the 'PM branch' of the linux-omap tree to add full PM hardware support from the linux-omap tree. Much of this PM core code was written by Jouni Hogander with significant contributions from Paul Walmsley as well as many others from Nokia, Texas Instruments and linux-omap community. Signed-off-by: Jouni Hogander <jouni.hogander@nokia.com> Cc: Paul Walmsley <paul@pwsan.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-omap2/pm.c')
-rw-r--r--arch/arm/mach-omap2/pm.c111
1 files changed, 0 insertions, 111 deletions
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
deleted file mode 100644
index ea8ceaed09cb..000000000000
--- a/arch/arm/mach-omap2/pm.c
+++ /dev/null
@@ -1,111 +0,0 @@
1/*
2 * linux/arch/arm/mach-omap2/pm.c
3 *
4 * OMAP2 Power Management Routines
5 *
6 * Copyright (C) 2006 Nokia Corporation
7 * Tony Lindgren <tony@atomide.com>
8 *
9 * Copyright (C) 2005 Texas Instruments, Inc.
10 * Richard Woodruff <r-woodruff2@ti.com>
11 *
12 * Based on pm.c for omap1
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
17 */
18
19#include <linux/suspend.h>
20#include <linux/sched.h>
21#include <linux/proc_fs.h>
22#include <linux/interrupt.h>
23#include <linux/sysfs.h>
24#include <linux/module.h>
25#include <linux/delay.h>
26#include <linux/clk.h>
27#include <linux/io.h>
28
29#include <asm/irq.h>
30#include <asm/atomic.h>
31#include <asm/mach/time.h>
32#include <asm/mach/irq.h>
33
34#include <mach/irqs.h>
35#include <mach/clock.h>
36#include <mach/sram.h>
37#include <mach/pm.h>
38
39static struct clk *vclk;
40static void (*omap2_sram_idle)(void);
41static void (*omap2_sram_suspend)(int dllctrl, int cpu_rev);
42static void (*saved_idle)(void);
43
44extern void __init pmdomain_init(void);
45extern void pmdomain_set_autoidle(void);
46
47static unsigned int omap24xx_sleep_save[OMAP24XX_SLEEP_SAVE_SIZE];
48
49void omap2_pm_idle(void)
50{
51 local_irq_disable();
52 local_fiq_disable();
53 if (need_resched()) {
54 local_fiq_enable();
55 local_irq_enable();
56 return;
57 }
58
59 omap2_sram_idle();
60 local_fiq_enable();
61 local_irq_enable();
62}
63
64static int omap2_pm_prepare(void)
65{
66 /* We cannot sleep in idle until we have resumed */
67 saved_idle = pm_idle;
68 pm_idle = NULL;
69 return 0;
70}
71
72static int omap2_pm_suspend(void)
73{
74 return 0;
75}
76
77static int omap2_pm_enter(suspend_state_t state)
78{
79 int ret = 0;
80
81 switch (state)
82 {
83 case PM_SUSPEND_STANDBY:
84 case PM_SUSPEND_MEM:
85 ret = omap2_pm_suspend();
86 break;
87 default:
88 ret = -EINVAL;
89 }
90
91 return ret;
92}
93
94static void omap2_pm_finish(void)
95{
96 pm_idle = saved_idle;
97}
98
99static struct platform_suspend_ops omap_pm_ops = {
100 .prepare = omap2_pm_prepare,
101 .enter = omap2_pm_enter,
102 .finish = omap2_pm_finish,
103 .valid = suspend_valid_only_mem,
104};
105
106static int __init omap2_pm_init(void)
107{
108 return 0;
109}
110
111__initcall(omap2_pm_init);