2 * m68k beeper driver for Linux
4 * Copyright (c) 2002 Richard Zidlicky
5 * Copyright (c) 2002 Vojtech Pavlik
6 * Copyright (c) 1992 Orest Zborowski
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
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>
24 MODULE_AUTHOR("Richard Zidlicky <rz@linux-m68k.org>");
25 MODULE_DESCRIPTION("m68k beeper driver");
26 MODULE_LICENSE("GPL");
28 static struct platform_device *m68kspkr_platform_device;
30 static int m68kspkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
32 unsigned int count = 0;
38 case SND_BELL: if (value) value = 1000;
43 if (value > 20 && value < 32767)
44 count = 1193182 / value;
51 static int __devinit m68kspkr_probe(struct platform_device *dev)
53 struct input_dev *input_dev;
56 input_dev = input_allocate_device();
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->cdev.dev = &dev->dev;
68 input_dev->evbit[0] = BIT(EV_SND);
69 input_dev->sndbit[0] = BIT(SND_BELL) | BIT(SND_TONE);
70 input_dev->event = m68kspkr_event;
72 err = input_register_device(input_dev);
74 input_free_device(input_dev);
78 platform_set_drvdata(dev, input_dev);
83 static int __devexit m68kspkr_remove(struct platform_device *dev)
85 struct input_dev *input_dev = platform_get_drvdata(dev);
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);
95 static void m68kspkr_shutdown(struct platform_device *dev)
97 /* turn off the speaker */
98 m68kspkr_event(NULL, EV_SND, SND_BELL, 0);
101 static struct platform_driver m68kspkr_platform_driver = {
104 .owner = THIS_MODULE,
106 .probe = m68kspkr_probe,
107 .remove = __devexit_p(m68kspkr_remove),
108 .shutdown = m68kspkr_shutdown,
111 static int __init m68kspkr_init(void)
116 printk(KERN_INFO "m68kspkr: no lowlevel beep support\n");
120 err = platform_driver_register(&m68kspkr_platform_driver);
124 m68kspkr_platform_device = platform_device_alloc("m68kspkr", -1);
125 if (!m68kspkr_platform_device) {
127 goto err_unregister_driver;
130 err = platform_device_add(m68kspkr_platform_device);
132 goto err_free_device;
137 platform_device_put(m68kspkr_platform_device);
138 err_unregister_driver:
139 platform_driver_unregister(&m68kspkr_platform_driver);
144 static void __exit m68kspkr_exit(void)
146 platform_device_unregister(m68kspkr_platform_device);
147 platform_driver_unregister(&m68kspkr_platform_driver);
150 module_init(m68kspkr_init);
151 module_exit(m68kspkr_exit);