Commit | Line | Data |
---|---|---|
1da177e4 LT |
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> | |
1f75e6bd | 20 | #include <linux/platform_device.h> |
1da177e4 LT |
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 | ||
1f75e6bd | 28 | static struct platform_device *m68kspkr_platform_device; |
1da177e4 LT |
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 | ||
5298cc4c | 51 | static int m68kspkr_probe(struct platform_device *dev) |
1f75e6bd DT |
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; | |
293e6392 | 66 | input_dev->dev.parent = &dev->dev; |
1f75e6bd | 67 | |
7b19ada2 JS |
68 | input_dev->evbit[0] = BIT_MASK(EV_SND); |
69 | input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE); | |
1f75e6bd DT |
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 | ||
e2619cf7 | 83 | static int m68kspkr_remove(struct platform_device *dev) |
1f75e6bd DT |
84 | { |
85 | struct input_dev *input_dev = platform_get_drvdata(dev); | |
86 | ||
87 | input_unregister_device(input_dev); | |
1f75e6bd DT |
88 | /* turn off the speaker */ |
89 | m68kspkr_event(NULL, EV_SND, SND_BELL, 0); | |
90 | ||
91 | return 0; | |
92 | } | |
93 | ||
94 | static void m68kspkr_shutdown(struct platform_device *dev) | |
95 | { | |
96 | /* turn off the speaker */ | |
97 | m68kspkr_event(NULL, EV_SND, SND_BELL, 0); | |
98 | } | |
99 | ||
100 | static struct platform_driver m68kspkr_platform_driver = { | |
101 | .driver = { | |
102 | .name = "m68kspkr", | |
1f75e6bd DT |
103 | }, |
104 | .probe = m68kspkr_probe, | |
1cb0aa88 | 105 | .remove = m68kspkr_remove, |
1f75e6bd DT |
106 | .shutdown = m68kspkr_shutdown, |
107 | }; | |
108 | ||
1da177e4 LT |
109 | static int __init m68kspkr_init(void) |
110 | { | |
1f75e6bd DT |
111 | int err; |
112 | ||
113 | if (!mach_beep) { | |
76b7cddf DT |
114 | printk(KERN_INFO "m68kspkr: no lowlevel beep support\n"); |
115 | return -ENODEV; | |
1da177e4 LT |
116 | } |
117 | ||
1f75e6bd DT |
118 | err = platform_driver_register(&m68kspkr_platform_driver); |
119 | if (err) | |
120 | return err; | |
1da177e4 | 121 | |
1f75e6bd DT |
122 | m68kspkr_platform_device = platform_device_alloc("m68kspkr", -1); |
123 | if (!m68kspkr_platform_device) { | |
124 | err = -ENOMEM; | |
125 | goto err_unregister_driver; | |
126 | } | |
1da177e4 | 127 | |
1f75e6bd DT |
128 | err = platform_device_add(m68kspkr_platform_device); |
129 | if (err) | |
130 | goto err_free_device; | |
1da177e4 LT |
131 | |
132 | return 0; | |
1f75e6bd DT |
133 | |
134 | err_free_device: | |
135 | platform_device_put(m68kspkr_platform_device); | |
136 | err_unregister_driver: | |
137 | platform_driver_unregister(&m68kspkr_platform_driver); | |
138 | ||
139 | return err; | |
1da177e4 LT |
140 | } |
141 | ||
142 | static void __exit m68kspkr_exit(void) | |
143 | { | |
1f75e6bd DT |
144 | platform_device_unregister(m68kspkr_platform_device); |
145 | platform_driver_unregister(&m68kspkr_platform_driver); | |
1da177e4 LT |
146 | } |
147 | ||
148 | module_init(m68kspkr_init); | |
149 | module_exit(m68kspkr_exit); |