Commit | Line | Data |
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e17bb1de RP |
1 | /* |
2 | * Input Power Event -> APM Bridge | |
3 | * | |
4 | * Copyright (c) 2007 Richard Purdie | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | */ | |
11 | ||
12 | #include <linux/module.h> | |
13 | #include <linux/input.h> | |
14 | #include <linux/slab.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/tty.h> | |
17 | #include <linux/delay.h> | |
18 | #include <linux/pm.h> | |
19 | #include <linux/apm-emulation.h> | |
20 | ||
21 | static void system_power_event(unsigned int keycode) | |
22 | { | |
23 | switch (keycode) { | |
24 | case KEY_SUSPEND: | |
25 | apm_queue_event(APM_USER_SUSPEND); | |
26 | ||
27 | printk(KERN_INFO "apm-power: Requesting system suspend...\n"); | |
28 | break; | |
29 | default: | |
30 | break; | |
31 | } | |
32 | } | |
33 | ||
34 | static void apmpower_event(struct input_handle *handle, unsigned int type, | |
35 | unsigned int code, int value) | |
36 | { | |
37 | /* only react on key down events */ | |
38 | if (value != 1) | |
39 | return; | |
40 | ||
41 | switch (type) { | |
42 | case EV_PWR: | |
43 | system_power_event(code); | |
44 | break; | |
45 | ||
46 | default: | |
47 | break; | |
48 | } | |
49 | } | |
50 | ||
51 | static int apmpower_connect(struct input_handler *handler, | |
52 | struct input_dev *dev, | |
53 | const struct input_device_id *id) | |
54 | { | |
55 | struct input_handle *handle; | |
56 | int error; | |
57 | ||
58 | handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL); | |
59 | if (!handle) | |
60 | return -ENOMEM; | |
61 | ||
62 | handle->dev = dev; | |
63 | handle->handler = handler; | |
64 | handle->name = "apm-power"; | |
65 | ||
e17bb1de RP |
66 | error = input_register_handle(handle); |
67 | if (error) { | |
68 | printk(KERN_ERR | |
69 | "apm-power: Failed to register input power handler, " | |
70 | "error %d\n", error); | |
71 | kfree(handle); | |
72 | return error; | |
73 | } | |
74 | ||
75 | error = input_open_device(handle); | |
76 | if (error) { | |
77 | printk(KERN_ERR | |
78 | "apm-power: Failed to open input power device, " | |
79 | "error %d\n", error); | |
80 | input_unregister_handle(handle); | |
81 | kfree(handle); | |
82 | return error; | |
83 | } | |
84 | ||
85 | return 0; | |
86 | } | |
87 | ||
481419ec | 88 | static void apmpower_disconnect(struct input_handle *handle) |
e17bb1de | 89 | { |
e17bb1de | 90 | input_close_device(handle); |
481419ec | 91 | input_unregister_handle(handle); |
e17bb1de RP |
92 | kfree(handle); |
93 | } | |
94 | ||
95 | static const struct input_device_id apmpower_ids[] = { | |
96 | { | |
97 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT, | |
98 | .evbit = { BIT_MASK(EV_PWR) }, | |
99 | }, | |
100 | { }, | |
101 | }; | |
102 | ||
103 | MODULE_DEVICE_TABLE(input, apmpower_ids); | |
104 | ||
105 | static struct input_handler apmpower_handler = { | |
106 | .event = apmpower_event, | |
107 | .connect = apmpower_connect, | |
108 | .disconnect = apmpower_disconnect, | |
109 | .name = "apm-power", | |
110 | .id_table = apmpower_ids, | |
111 | }; | |
112 | ||
113 | static int __init apmpower_init(void) | |
114 | { | |
115 | return input_register_handler(&apmpower_handler); | |
116 | } | |
117 | ||
118 | static void __exit apmpower_exit(void) | |
119 | { | |
120 | input_unregister_handler(&apmpower_handler); | |
121 | } | |
122 | ||
123 | module_init(apmpower_init); | |
124 | module_exit(apmpower_exit); | |
125 | ||
126 | MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>"); | |
127 | MODULE_DESCRIPTION("Input Power Event -> APM Bridge"); | |
128 | MODULE_LICENSE("GPL"); |