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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/i8253.h>
18#include <linux/input.h>
19#include <linux/platform_device.h>
20#include <linux/timex.h>
21#include <asm/io.h>
22
23MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
24MODULE_DESCRIPTION("PC Speaker beeper driver");
25MODULE_LICENSE("GPL");
26MODULE_ALIAS("platform:pcspkr");
27
28static int pcspkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
29{
30 unsigned int count = 0;
31 unsigned long flags;
32
33 if (type != EV_SND)
34 return -1;
35
36 switch (code) {
37 case SND_BELL: if (value) value = 1000;
38 case SND_TONE: break;
39 default: return -1;
40 }
41
42 if (value > 20 && value < 32767)
43 count = PIT_TICK_RATE / value;
44
45 raw_spin_lock_irqsave(&i8253_lock, flags);
46
47 if (count) {
48 /* set command for counter 2, 2 byte write */
49 outb_p(0xB6, 0x43);
50 /* select desired HZ */
51 outb_p(count & 0xff, 0x42);
52 outb((count >> 8) & 0xff, 0x42);
53 /* enable counter 2 */
54 outb_p(inb_p(0x61) | 3, 0x61);
55 } else {
56 /* disable counter 2 */
57 outb(inb_p(0x61) & 0xFC, 0x61);
58 }
59
60 raw_spin_unlock_irqrestore(&i8253_lock, flags);
61
62 return 0;
63}
64
65static int pcspkr_probe(struct platform_device *dev)
66{
67 struct input_dev *pcspkr_dev;
68 int err;
69
70 pcspkr_dev = input_allocate_device();
71 if (!pcspkr_dev)
72 return -ENOMEM;
73
74 pcspkr_dev->name = "PC Speaker";
75 pcspkr_dev->phys = "isa0061/input0";
76 pcspkr_dev->id.bustype = BUS_ISA;
77 pcspkr_dev->id.vendor = 0x001f;
78 pcspkr_dev->id.product = 0x0001;
79 pcspkr_dev->id.version = 0x0100;
80 pcspkr_dev->dev.parent = &dev->dev;
81
82 pcspkr_dev->evbit[0] = BIT_MASK(EV_SND);
83 pcspkr_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
84 pcspkr_dev->event = pcspkr_event;
85
86 err = input_register_device(pcspkr_dev);
87 if (err) {
88 input_free_device(pcspkr_dev);
89 return err;
90 }
91
92 platform_set_drvdata(dev, pcspkr_dev);
93
94 return 0;
95}
96
97static int pcspkr_remove(struct platform_device *dev)
98{
99 struct input_dev *pcspkr_dev = platform_get_drvdata(dev);
100
101 input_unregister_device(pcspkr_dev);
102 /* turn off the speaker */
103 pcspkr_event(NULL, EV_SND, SND_BELL, 0);
104
105 return 0;
106}
107
108static int pcspkr_suspend(struct device *dev)
109{
110 pcspkr_event(NULL, EV_SND, SND_BELL, 0);
111
112 return 0;
113}
114
115static void pcspkr_shutdown(struct platform_device *dev)
116{
117 /* turn off the speaker */
118 pcspkr_event(NULL, EV_SND, SND_BELL, 0);
119}
120
121static const struct dev_pm_ops pcspkr_pm_ops = {
122 .suspend = pcspkr_suspend,
123};
124
125static struct platform_driver pcspkr_platform_driver = {
126 .driver = {
127 .name = "pcspkr",
128 .owner = THIS_MODULE,
129 .pm = &pcspkr_pm_ops,
130 },
131 .probe = pcspkr_probe,
132 .remove = pcspkr_remove,
133 .shutdown = pcspkr_shutdown,
134};
135module_platform_driver(pcspkr_platform_driver);
136
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * PC Speaker beeper driver for Linux
4 *
5 * Copyright (c) 2002 Vojtech Pavlik
6 * Copyright (c) 1992 Orest Zborowski
7 */
8
9
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/i8253.h>
13#include <linux/input.h>
14#include <linux/platform_device.h>
15#include <linux/timex.h>
16#include <linux/io.h>
17
18MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
19MODULE_DESCRIPTION("PC Speaker beeper driver");
20MODULE_LICENSE("GPL");
21MODULE_ALIAS("platform:pcspkr");
22
23static int pcspkr_event(struct input_dev *dev, unsigned int type,
24 unsigned int code, int value)
25{
26 unsigned int count = 0;
27 unsigned long flags;
28
29 if (type != EV_SND)
30 return -EINVAL;
31
32 switch (code) {
33 case SND_BELL:
34 if (value)
35 value = 1000;
36 case SND_TONE:
37 break;
38 default:
39 return -EINVAL;
40 }
41
42 if (value > 20 && value < 32767)
43 count = PIT_TICK_RATE / value;
44
45 raw_spin_lock_irqsave(&i8253_lock, flags);
46
47 if (count) {
48 /* set command for counter 2, 2 byte write */
49 outb_p(0xB6, 0x43);
50 /* select desired HZ */
51 outb_p(count & 0xff, 0x42);
52 outb((count >> 8) & 0xff, 0x42);
53 /* enable counter 2 */
54 outb_p(inb_p(0x61) | 3, 0x61);
55 } else {
56 /* disable counter 2 */
57 outb(inb_p(0x61) & 0xFC, 0x61);
58 }
59
60 raw_spin_unlock_irqrestore(&i8253_lock, flags);
61
62 return 0;
63}
64
65static int pcspkr_probe(struct platform_device *dev)
66{
67 struct input_dev *pcspkr_dev;
68 int err;
69
70 pcspkr_dev = input_allocate_device();
71 if (!pcspkr_dev)
72 return -ENOMEM;
73
74 pcspkr_dev->name = "PC Speaker";
75 pcspkr_dev->phys = "isa0061/input0";
76 pcspkr_dev->id.bustype = BUS_ISA;
77 pcspkr_dev->id.vendor = 0x001f;
78 pcspkr_dev->id.product = 0x0001;
79 pcspkr_dev->id.version = 0x0100;
80 pcspkr_dev->dev.parent = &dev->dev;
81
82 pcspkr_dev->evbit[0] = BIT_MASK(EV_SND);
83 pcspkr_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
84 pcspkr_dev->event = pcspkr_event;
85
86 err = input_register_device(pcspkr_dev);
87 if (err) {
88 input_free_device(pcspkr_dev);
89 return err;
90 }
91
92 platform_set_drvdata(dev, pcspkr_dev);
93
94 return 0;
95}
96
97static int pcspkr_remove(struct platform_device *dev)
98{
99 struct input_dev *pcspkr_dev = platform_get_drvdata(dev);
100
101 input_unregister_device(pcspkr_dev);
102 /* turn off the speaker */
103 pcspkr_event(NULL, EV_SND, SND_BELL, 0);
104
105 return 0;
106}
107
108static int pcspkr_suspend(struct device *dev)
109{
110 pcspkr_event(NULL, EV_SND, SND_BELL, 0);
111
112 return 0;
113}
114
115static void pcspkr_shutdown(struct platform_device *dev)
116{
117 /* turn off the speaker */
118 pcspkr_event(NULL, EV_SND, SND_BELL, 0);
119}
120
121static const struct dev_pm_ops pcspkr_pm_ops = {
122 .suspend = pcspkr_suspend,
123};
124
125static struct platform_driver pcspkr_platform_driver = {
126 .driver = {
127 .name = "pcspkr",
128 .pm = &pcspkr_pm_ops,
129 },
130 .probe = pcspkr_probe,
131 .remove = pcspkr_remove,
132 .shutdown = pcspkr_shutdown,
133};
134module_platform_driver(pcspkr_platform_driver);
135