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-rw-r--r--drivers/base/power/runtime.c85
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
13static 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
33void dpm_runtime_resume(struct device * dev)
34{
35 mutex_lock(&dpm_mtx);
36 runtime_resume(dev);
37 mutex_unlock(&dpm_mtx);
38}
39EXPORT_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
48int 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}
65EXPORT_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 */
79void 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 */