diff options
Diffstat (limited to 'drivers/base/power/resume.c')
-rw-r--r-- | drivers/base/power/resume.c | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/drivers/base/power/resume.c b/drivers/base/power/resume.c deleted file mode 100644 index 00fd84ae6e66..000000000000 --- a/drivers/base/power/resume.c +++ /dev/null | |||
@@ -1,149 +0,0 @@ | |||
1 | /* | ||
2 | * resume.c - Functions for waking devices up. | ||
3 | * | ||
4 | * Copyright (c) 2003 Patrick Mochel | ||
5 | * Copyright (c) 2003 Open Source Development Labs | ||
6 | * | ||
7 | * This file is released under the GPLv2 | ||
8 | * | ||
9 | */ | ||
10 | |||
11 | #include <linux/device.h> | ||
12 | #include <linux/resume-trace.h> | ||
13 | #include "../base.h" | ||
14 | #include "power.h" | ||
15 | |||
16 | |||
17 | /** | ||
18 | * resume_device - Restore state for one device. | ||
19 | * @dev: Device. | ||
20 | * | ||
21 | */ | ||
22 | |||
23 | int resume_device(struct device * dev) | ||
24 | { | ||
25 | int error = 0; | ||
26 | |||
27 | TRACE_DEVICE(dev); | ||
28 | TRACE_RESUME(0); | ||
29 | |||
30 | down(&dev->sem); | ||
31 | |||
32 | if (dev->bus && dev->bus->resume) { | ||
33 | dev_dbg(dev,"resuming\n"); | ||
34 | error = dev->bus->resume(dev); | ||
35 | } | ||
36 | |||
37 | if (!error && dev->type && dev->type->resume) { | ||
38 | dev_dbg(dev,"resuming\n"); | ||
39 | error = dev->type->resume(dev); | ||
40 | } | ||
41 | |||
42 | if (!error && dev->class && dev->class->resume) { | ||
43 | dev_dbg(dev,"class resume\n"); | ||
44 | error = dev->class->resume(dev); | ||
45 | } | ||
46 | |||
47 | up(&dev->sem); | ||
48 | |||
49 | TRACE_RESUME(error); | ||
50 | return error; | ||
51 | } | ||
52 | |||
53 | |||
54 | static int resume_device_early(struct device * dev) | ||
55 | { | ||
56 | int error = 0; | ||
57 | |||
58 | TRACE_DEVICE(dev); | ||
59 | TRACE_RESUME(0); | ||
60 | if (dev->bus && dev->bus->resume_early) { | ||
61 | dev_dbg(dev,"EARLY resume\n"); | ||
62 | error = dev->bus->resume_early(dev); | ||
63 | } | ||
64 | TRACE_RESUME(error); | ||
65 | return error; | ||
66 | } | ||
67 | |||
68 | /* | ||
69 | * Resume the devices that have either not gone through | ||
70 | * the late suspend, or that did go through it but also | ||
71 | * went through the early resume | ||
72 | */ | ||
73 | void dpm_resume(void) | ||
74 | { | ||
75 | mutex_lock(&dpm_list_mtx); | ||
76 | while(!list_empty(&dpm_off)) { | ||
77 | struct list_head * entry = dpm_off.next; | ||
78 | struct device * dev = to_device(entry); | ||
79 | |||
80 | get_device(dev); | ||
81 | list_move_tail(entry, &dpm_active); | ||
82 | |||
83 | mutex_unlock(&dpm_list_mtx); | ||
84 | resume_device(dev); | ||
85 | mutex_lock(&dpm_list_mtx); | ||
86 | put_device(dev); | ||
87 | } | ||
88 | mutex_unlock(&dpm_list_mtx); | ||
89 | } | ||
90 | |||
91 | |||
92 | /** | ||
93 | * device_resume - Restore state of each device in system. | ||
94 | * | ||
95 | * Walk the dpm_off list, remove each entry, resume the device, | ||
96 | * then add it to the dpm_active list. | ||
97 | */ | ||
98 | |||
99 | void device_resume(void) | ||
100 | { | ||
101 | might_sleep(); | ||
102 | mutex_lock(&dpm_mtx); | ||
103 | dpm_resume(); | ||
104 | mutex_unlock(&dpm_mtx); | ||
105 | } | ||
106 | |||
107 | EXPORT_SYMBOL_GPL(device_resume); | ||
108 | |||
109 | |||
110 | /** | ||
111 | * dpm_power_up - Power on some devices. | ||
112 | * | ||
113 | * Walk the dpm_off_irq list and power each device up. This | ||
114 | * is used for devices that required they be powered down with | ||
115 | * interrupts disabled. As devices are powered on, they are moved | ||
116 | * to the dpm_active list. | ||
117 | * | ||
118 | * Interrupts must be disabled when calling this. | ||
119 | */ | ||
120 | |||
121 | void dpm_power_up(void) | ||
122 | { | ||
123 | while(!list_empty(&dpm_off_irq)) { | ||
124 | struct list_head * entry = dpm_off_irq.next; | ||
125 | struct device * dev = to_device(entry); | ||
126 | |||
127 | list_move_tail(entry, &dpm_off); | ||
128 | resume_device_early(dev); | ||
129 | } | ||
130 | } | ||
131 | |||
132 | |||
133 | /** | ||
134 | * device_power_up - Turn on all devices that need special attention. | ||
135 | * | ||
136 | * Power on system devices then devices that required we shut them down | ||
137 | * with interrupts disabled. | ||
138 | * Called with interrupts disabled. | ||
139 | */ | ||
140 | |||
141 | void device_power_up(void) | ||
142 | { | ||
143 | sysdev_resume(); | ||
144 | dpm_power_up(); | ||
145 | } | ||
146 | |||
147 | EXPORT_SYMBOL_GPL(device_power_up); | ||
148 | |||
149 | |||