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> | |
17 | #include <linux/init.h> | |
18 | #include <linux/input.h> | |
59317747 | 19 | #include <linux/platform_device.h> |
08604bd9 | 20 | #include <linux/timex.h> |
1da177e4 LT |
21 | #include <asm/io.h> |
22 | ||
23 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
24 | MODULE_DESCRIPTION("PC Speaker beeper driver"); | |
25 | MODULE_LICENSE("GPL"); | |
43cc71ee | 26 | MODULE_ALIAS("platform:pcspkr"); |
1da177e4 | 27 | |
74521c28 | 28 | #if defined(CONFIG_MIPS) || defined(CONFIG_X86) |
28318daf | 29 | /* Use the global PIT lock ! */ |
334955ef | 30 | #include <linux/i8253.h> |
28318daf | 31 | #else |
5d5a2989 | 32 | #include <asm/8253pit.h> |
ced918eb | 33 | static DEFINE_RAW_SPINLOCK(i8253_lock); |
28318daf | 34 | #endif |
1da177e4 LT |
35 | |
36 | static int pcspkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) | |
37 | { | |
38 | unsigned int count = 0; | |
39 | unsigned long flags; | |
40 | ||
41 | if (type != EV_SND) | |
42 | return -1; | |
43 | ||
44 | switch (code) { | |
45 | case SND_BELL: if (value) value = 1000; | |
46 | case SND_TONE: break; | |
47 | default: return -1; | |
48 | } | |
49 | ||
50 | if (value > 20 && value < 32767) | |
51 | count = PIT_TICK_RATE / value; | |
52 | ||
ced918eb | 53 | raw_spin_lock_irqsave(&i8253_lock, flags); |
1da177e4 LT |
54 | |
55 | if (count) { | |
1da177e4 LT |
56 | /* set command for counter 2, 2 byte write */ |
57 | outb_p(0xB6, 0x43); | |
58 | /* select desired HZ */ | |
59 | outb_p(count & 0xff, 0x42); | |
60 | outb((count >> 8) & 0xff, 0x42); | |
59bdb437 ZD |
61 | /* enable counter 2 */ |
62 | outb_p(inb_p(0x61) | 3, 0x61); | |
1da177e4 LT |
63 | } else { |
64 | /* disable counter 2 */ | |
65 | outb(inb_p(0x61) & 0xFC, 0x61); | |
66 | } | |
67 | ||
ced918eb | 68 | raw_spin_unlock_irqrestore(&i8253_lock, flags); |
1da177e4 LT |
69 | |
70 | return 0; | |
71 | } | |
72 | ||
59317747 | 73 | static int __devinit pcspkr_probe(struct platform_device *dev) |
1da177e4 | 74 | { |
59317747 DT |
75 | struct input_dev *pcspkr_dev; |
76 | int err; | |
77 | ||
76b7cddf DT |
78 | pcspkr_dev = input_allocate_device(); |
79 | if (!pcspkr_dev) | |
80 | return -ENOMEM; | |
1da177e4 | 81 | |
76b7cddf | 82 | pcspkr_dev->name = "PC Speaker"; |
1259f2b3 | 83 | pcspkr_dev->phys = "isa0061/input0"; |
76b7cddf DT |
84 | pcspkr_dev->id.bustype = BUS_ISA; |
85 | pcspkr_dev->id.vendor = 0x001f; | |
86 | pcspkr_dev->id.product = 0x0001; | |
87 | pcspkr_dev->id.version = 0x0100; | |
293e6392 | 88 | pcspkr_dev->dev.parent = &dev->dev; |
1da177e4 | 89 | |
7b19ada2 JS |
90 | pcspkr_dev->evbit[0] = BIT_MASK(EV_SND); |
91 | pcspkr_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE); | |
76b7cddf | 92 | pcspkr_dev->event = pcspkr_event; |
1da177e4 | 93 | |
59317747 DT |
94 | err = input_register_device(pcspkr_dev); |
95 | if (err) { | |
96 | input_free_device(pcspkr_dev); | |
97 | return err; | |
98 | } | |
99 | ||
100 | platform_set_drvdata(dev, pcspkr_dev); | |
1da177e4 LT |
101 | |
102 | return 0; | |
103 | } | |
104 | ||
59317747 DT |
105 | static int __devexit pcspkr_remove(struct platform_device *dev) |
106 | { | |
107 | struct input_dev *pcspkr_dev = platform_get_drvdata(dev); | |
108 | ||
109 | input_unregister_device(pcspkr_dev); | |
110 | platform_set_drvdata(dev, NULL); | |
111 | /* turn off the speaker */ | |
112 | pcspkr_event(NULL, EV_SND, SND_BELL, 0); | |
113 | ||
114 | return 0; | |
115 | } | |
116 | ||
35db715b | 117 | static int pcspkr_suspend(struct device *dev) |
59317747 DT |
118 | { |
119 | pcspkr_event(NULL, EV_SND, SND_BELL, 0); | |
120 | ||
121 | return 0; | |
122 | } | |
123 | ||
124 | static void pcspkr_shutdown(struct platform_device *dev) | |
1da177e4 | 125 | { |
1da177e4 LT |
126 | /* turn off the speaker */ |
127 | pcspkr_event(NULL, EV_SND, SND_BELL, 0); | |
128 | } | |
129 | ||
47145210 | 130 | static const struct dev_pm_ops pcspkr_pm_ops = { |
35db715b FP |
131 | .suspend = pcspkr_suspend, |
132 | }; | |
133 | ||
59317747 DT |
134 | static struct platform_driver pcspkr_platform_driver = { |
135 | .driver = { | |
136 | .name = "pcspkr", | |
137 | .owner = THIS_MODULE, | |
35db715b | 138 | .pm = &pcspkr_pm_ops, |
59317747 DT |
139 | }, |
140 | .probe = pcspkr_probe, | |
141 | .remove = __devexit_p(pcspkr_remove), | |
59317747 DT |
142 | .shutdown = pcspkr_shutdown, |
143 | }; | |
144 | ||
145 | ||
146 | static int __init pcspkr_init(void) | |
147 | { | |
e5c6c8e4 | 148 | return platform_driver_register(&pcspkr_platform_driver); |
59317747 DT |
149 | } |
150 | ||
151 | static void __exit pcspkr_exit(void) | |
152 | { | |
59317747 DT |
153 | platform_driver_unregister(&pcspkr_platform_driver); |
154 | } | |
155 | ||
1da177e4 LT |
156 | module_init(pcspkr_init); |
157 | module_exit(pcspkr_exit); |