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1 | /* |
2 | * m68k beeper driver for Linux |
3 | * |
4 | * Copyright (c) 2002 Richard Zidlicky |
5 | * Copyright (c) 2002 Vojtech Pavlik |
6 | * Copyright (c) 1992 Orest Zborowski |
7 | * |
8 | */ |
9 | |
10 | /* |
11 | * This program is free software; you can redistribute it and/or modify it |
12 | * under the terms of the GNU General Public License version 2 as published by |
13 | * the Free Software Foundation |
14 | */ |
15 | |
16 | #include <linux/kernel.h> |
17 | #include <linux/module.h> |
18 | #include <linux/init.h> |
19 | #include <linux/input.h> |
20 | #include <linux/platform_device.h> |
21 | #include <asm/machdep.h> |
22 | #include <asm/io.h> |
23 | |
24 | MODULE_AUTHOR("Richard Zidlicky <rz@linux-m68k.org>"); |
25 | MODULE_DESCRIPTION("m68k beeper driver"); |
26 | MODULE_LICENSE("GPL"); |
27 | |
28 | static struct platform_device *m68kspkr_platform_device; |
29 | |
30 | static int m68kspkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
31 | { |
32 | unsigned int count = 0; |
33 | |
34 | if (type != EV_SND) |
35 | return -1; |
36 | |
37 | switch (code) { |
38 | case SND_BELL: if (value) value = 1000; |
39 | case SND_TONE: break; |
40 | default: return -1; |
41 | } |
42 | |
43 | if (value > 20 && value < 32767) |
44 | count = 1193182 / value; |
45 | |
46 | mach_beep(count, -1); |
47 | |
48 | return 0; |
49 | } |
50 | |
51 | static int m68kspkr_probe(struct platform_device *dev) |
52 | { |
53 | struct input_dev *input_dev; |
54 | int err; |
55 | |
56 | input_dev = input_allocate_device(); |
57 | if (!input_dev) |
58 | return -ENOMEM; |
59 | |
60 | input_dev->name = "m68k beeper"; |
61 | input_dev->phys = "m68k/generic"; |
62 | input_dev->id.bustype = BUS_HOST; |
63 | input_dev->id.vendor = 0x001f; |
64 | input_dev->id.product = 0x0001; |
65 | input_dev->id.version = 0x0100; |
66 | input_dev->dev.parent = &dev->dev; |
67 | |
68 | input_dev->evbit[0] = BIT_MASK(EV_SND); |
69 | input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE); |
70 | input_dev->event = m68kspkr_event; |
71 | |
72 | err = input_register_device(input_dev); |
73 | if (err) { |
74 | input_free_device(input_dev); |
75 | return err; |
76 | } |
77 | |
78 | platform_set_drvdata(dev, input_dev); |
79 | |
80 | return 0; |
81 | } |
82 | |
83 | static int m68kspkr_remove(struct platform_device *dev) |
84 | { |
85 | struct input_dev *input_dev = platform_get_drvdata(dev); |
86 | |
87 | input_unregister_device(input_dev); |
88 | platform_set_drvdata(dev, NULL); |
89 | /* turn off the speaker */ |
90 | m68kspkr_event(NULL, EV_SND, SND_BELL, 0); |
91 | |
92 | return 0; |
93 | } |
94 | |
95 | static void m68kspkr_shutdown(struct platform_device *dev) |
96 | { |
97 | /* turn off the speaker */ |
98 | m68kspkr_event(NULL, EV_SND, SND_BELL, 0); |
99 | } |
100 | |
101 | static struct platform_driver m68kspkr_platform_driver = { |
102 | .driver = { |
103 | .name = "m68kspkr", |
104 | .owner = THIS_MODULE, |
105 | }, |
106 | .probe = m68kspkr_probe, |
107 | .remove = m68kspkr_remove, |
108 | .shutdown = m68kspkr_shutdown, |
109 | }; |
110 | |
111 | static int __init m68kspkr_init(void) |
112 | { |
113 | int err; |
114 | |
115 | if (!mach_beep) { |
116 | printk(KERN_INFO "m68kspkr: no lowlevel beep support\n"); |
117 | return -ENODEV; |
118 | } |
119 | |
120 | err = platform_driver_register(&m68kspkr_platform_driver); |
121 | if (err) |
122 | return err; |
123 | |
124 | m68kspkr_platform_device = platform_device_alloc("m68kspkr", -1); |
125 | if (!m68kspkr_platform_device) { |
126 | err = -ENOMEM; |
127 | goto err_unregister_driver; |
128 | } |
129 | |
130 | err = platform_device_add(m68kspkr_platform_device); |
131 | if (err) |
132 | goto err_free_device; |
133 | |
134 | return 0; |
135 | |
136 | err_free_device: |
137 | platform_device_put(m68kspkr_platform_device); |
138 | err_unregister_driver: |
139 | platform_driver_unregister(&m68kspkr_platform_driver); |
140 | |
141 | return err; |
142 | } |
143 | |
144 | static void __exit m68kspkr_exit(void) |
145 | { |
146 | platform_device_unregister(m68kspkr_platform_device); |
147 | platform_driver_unregister(&m68kspkr_platform_driver); |
148 | } |
149 | |
150 | module_init(m68kspkr_init); |
151 | module_exit(m68kspkr_exit); |
152 |
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od-2011-09-04
od-2011-09-18
v2.6.34-rc5
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