diff options
Diffstat (limited to 'drivers/base/power/runtime.c')
-rw-r--r-- | drivers/base/power/runtime.c | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c deleted file mode 100644 index df6174d85866..000000000000 --- a/drivers/base/power/runtime.c +++ /dev/null | |||
@@ -1,85 +0,0 @@ | |||
1 | /* | ||
2 | * drivers/base/power/runtime.c - Handling dynamic device power management. | ||
3 | * | ||
4 | * Copyright (c) 2003 Patrick Mochel | ||
5 | * Copyright (c) 2003 Open Source Development Lab | ||
6 | * | ||
7 | */ | ||
8 | |||
9 | #include <linux/device.h> | ||
10 | #include "power.h" | ||
11 | |||
12 | |||
13 | static void runtime_resume(struct device * dev) | ||
14 | { | ||
15 | dev_dbg(dev, "resuming\n"); | ||
16 | if (!dev->power.power_state.event) | ||
17 | return; | ||
18 | if (!resume_device(dev)) | ||
19 | dev->power.power_state = PMSG_ON; | ||
20 | } | ||
21 | |||
22 | |||
23 | /** | ||
24 | * dpm_runtime_resume - Power one device back on. | ||
25 | * @dev: Device. | ||
26 | * | ||
27 | * Bring one device back to the on state by first powering it | ||
28 | * on, then restoring state. We only operate on devices that aren't | ||
29 | * already on. | ||
30 | * FIXME: We need to handle devices that are in an unknown state. | ||
31 | */ | ||
32 | |||
33 | void dpm_runtime_resume(struct device * dev) | ||
34 | { | ||
35 | mutex_lock(&dpm_mtx); | ||
36 | runtime_resume(dev); | ||
37 | mutex_unlock(&dpm_mtx); | ||
38 | } | ||
39 | EXPORT_SYMBOL(dpm_runtime_resume); | ||
40 | |||
41 | |||
42 | /** | ||
43 | * dpm_runtime_suspend - Put one device in low-power state. | ||
44 | * @dev: Device. | ||
45 | * @state: State to enter. | ||
46 | */ | ||
47 | |||
48 | int dpm_runtime_suspend(struct device * dev, pm_message_t state) | ||
49 | { | ||
50 | int error = 0; | ||
51 | |||
52 | mutex_lock(&dpm_mtx); | ||
53 | if (dev->power.power_state.event == state.event) | ||
54 | goto Done; | ||
55 | |||
56 | if (dev->power.power_state.event) | ||
57 | runtime_resume(dev); | ||
58 | |||
59 | if (!(error = suspend_device(dev, state))) | ||
60 | dev->power.power_state = state; | ||
61 | Done: | ||
62 | mutex_unlock(&dpm_mtx); | ||
63 | return error; | ||
64 | } | ||
65 | EXPORT_SYMBOL(dpm_runtime_suspend); | ||
66 | |||
67 | |||
68 | #if 0 | ||
69 | /** | ||
70 | * dpm_set_power_state - Update power_state field. | ||
71 | * @dev: Device. | ||
72 | * @state: Power state device is in. | ||
73 | * | ||
74 | * This is an update mechanism for drivers to notify the core | ||
75 | * what power state a device is in. Device probing code may not | ||
76 | * always be able to tell, but we need accurate information to | ||
77 | * work reliably. | ||
78 | */ | ||
79 | void dpm_set_power_state(struct device * dev, pm_message_t state) | ||
80 | { | ||
81 | mutex_lock(&dpm_mtx); | ||
82 | dev->power.power_state = state; | ||
83 | mutex_unlock(&dpm_mtx); | ||
84 | } | ||
85 | #endif /* 0 */ | ||