Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * PC Speaker beeper driver for Linux | |
3 | * | |
4 | * Copyright (c) 2002 Vojtech Pavlik | |
5 | * Copyright (c) 1992 Orest Zborowski | |
6 | * | |
7 | */ | |
8 | ||
9 | /* | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License version 2 as published by | |
12 | * the Free Software Foundation | |
13 | */ | |
14 | ||
15 | #include <linux/kernel.h> | |
16 | #include <linux/module.h> | |
16ba9b06 | 17 | #include <linux/i8253.h> |
1da177e4 LT |
18 | #include <linux/init.h> |
19 | #include <linux/input.h> | |
59317747 | 20 | #include <linux/platform_device.h> |
08604bd9 | 21 | #include <linux/timex.h> |
1da177e4 LT |
22 | #include <asm/io.h> |
23 | ||
24 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
25 | MODULE_DESCRIPTION("PC Speaker beeper driver"); | |
26 | MODULE_LICENSE("GPL"); | |
43cc71ee | 27 | MODULE_ALIAS("platform:pcspkr"); |
1da177e4 | 28 | |
1da177e4 LT |
29 | static int pcspkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
30 | { | |
31 | unsigned int count = 0; | |
32 | unsigned long flags; | |
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 = PIT_TICK_RATE / value; | |
45 | ||
ced918eb | 46 | raw_spin_lock_irqsave(&i8253_lock, flags); |
1da177e4 LT |
47 | |
48 | if (count) { | |
1da177e4 LT |
49 | /* set command for counter 2, 2 byte write */ |
50 | outb_p(0xB6, 0x43); | |
51 | /* select desired HZ */ | |
52 | outb_p(count & 0xff, 0x42); | |
53 | outb((count >> 8) & 0xff, 0x42); | |
59bdb437 ZD |
54 | /* enable counter 2 */ |
55 | outb_p(inb_p(0x61) | 3, 0x61); | |
1da177e4 LT |
56 | } else { |
57 | /* disable counter 2 */ | |
58 | outb(inb_p(0x61) & 0xFC, 0x61); | |
59 | } | |
60 | ||
ced918eb | 61 | raw_spin_unlock_irqrestore(&i8253_lock, flags); |
1da177e4 LT |
62 | |
63 | return 0; | |
64 | } | |
65 | ||
59317747 | 66 | static int __devinit pcspkr_probe(struct platform_device *dev) |
1da177e4 | 67 | { |
59317747 DT |
68 | struct input_dev *pcspkr_dev; |
69 | int err; | |
70 | ||
76b7cddf DT |
71 | pcspkr_dev = input_allocate_device(); |
72 | if (!pcspkr_dev) | |
73 | return -ENOMEM; | |
1da177e4 | 74 | |
76b7cddf | 75 | pcspkr_dev->name = "PC Speaker"; |
1259f2b3 | 76 | pcspkr_dev->phys = "isa0061/input0"; |
76b7cddf DT |
77 | pcspkr_dev->id.bustype = BUS_ISA; |
78 | pcspkr_dev->id.vendor = 0x001f; | |
79 | pcspkr_dev->id.product = 0x0001; | |
80 | pcspkr_dev->id.version = 0x0100; | |
293e6392 | 81 | pcspkr_dev->dev.parent = &dev->dev; |
1da177e4 | 82 | |
7b19ada2 JS |
83 | pcspkr_dev->evbit[0] = BIT_MASK(EV_SND); |
84 | pcspkr_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE); | |
76b7cddf | 85 | pcspkr_dev->event = pcspkr_event; |
1da177e4 | 86 | |
59317747 DT |
87 | err = input_register_device(pcspkr_dev); |
88 | if (err) { | |
89 | input_free_device(pcspkr_dev); | |
90 | return err; | |
91 | } | |
92 | ||
93 | platform_set_drvdata(dev, pcspkr_dev); | |
1da177e4 LT |
94 | |
95 | return 0; | |
96 | } | |
97 | ||
59317747 DT |
98 | static int __devexit pcspkr_remove(struct platform_device *dev) |
99 | { | |
100 | struct input_dev *pcspkr_dev = platform_get_drvdata(dev); | |
101 | ||
102 | input_unregister_device(pcspkr_dev); | |
103 | platform_set_drvdata(dev, NULL); | |
104 | /* turn off the speaker */ | |
105 | pcspkr_event(NULL, EV_SND, SND_BELL, 0); | |
106 | ||
107 | return 0; | |
108 | } | |
109 | ||
35db715b | 110 | static int pcspkr_suspend(struct device *dev) |
59317747 DT |
111 | { |
112 | pcspkr_event(NULL, EV_SND, SND_BELL, 0); | |
113 | ||
114 | return 0; | |
115 | } | |
116 | ||
117 | static void pcspkr_shutdown(struct platform_device *dev) | |
1da177e4 | 118 | { |
1da177e4 LT |
119 | /* turn off the speaker */ |
120 | pcspkr_event(NULL, EV_SND, SND_BELL, 0); | |
121 | } | |
122 | ||
47145210 | 123 | static const struct dev_pm_ops pcspkr_pm_ops = { |
35db715b FP |
124 | .suspend = pcspkr_suspend, |
125 | }; | |
126 | ||
59317747 DT |
127 | static struct platform_driver pcspkr_platform_driver = { |
128 | .driver = { | |
129 | .name = "pcspkr", | |
130 | .owner = THIS_MODULE, | |
35db715b | 131 | .pm = &pcspkr_pm_ops, |
59317747 DT |
132 | }, |
133 | .probe = pcspkr_probe, | |
134 | .remove = __devexit_p(pcspkr_remove), | |
59317747 DT |
135 | .shutdown = pcspkr_shutdown, |
136 | }; | |
137 | ||
138 | ||
139 | static int __init pcspkr_init(void) | |
140 | { | |
e5c6c8e4 | 141 | return platform_driver_register(&pcspkr_platform_driver); |
59317747 DT |
142 | } |
143 | ||
144 | static void __exit pcspkr_exit(void) | |
145 | { | |
59317747 DT |
146 | platform_driver_unregister(&pcspkr_platform_driver); |
147 | } | |
148 | ||
1da177e4 LT |
149 | module_init(pcspkr_init); |
150 | module_exit(pcspkr_exit); |