[deliverable/linux.git] / drivers / input / misc / m68kspkr.c

/*
 *  m68k beeper driver for Linux
 *
 *  Copyright (c) 2002 Richard Zidlicky
 *  Copyright (c) 2002 Vojtech Pavlik
 *  Copyright (c) 1992 Orest Zborowski
 *
 */

/*
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/platform_device.h>
#include <asm/machdep.h>
#include <asm/io.h>

MODULE_AUTHOR("Richard Zidlicky <rz@linux-m68k.org>");
MODULE_DESCRIPTION("m68k beeper driver");
MODULE_LICENSE("GPL");

static struct platform_device *m68kspkr_platform_device;

static int m68kspkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
{
	unsigned int count = 0;

	if (type != EV_SND)
		return -1;

	switch (code) {
		case SND_BELL: if (value) value = 1000;
		case SND_TONE: break;
		default: return -1;
	}

	if (value > 20 && value < 32767)
		count = 1193182 / value;

	mach_beep(count, -1);

	return 0;
}

static int m68kspkr_probe(struct platform_device *dev)
{
	struct input_dev *input_dev;
	int err;

	input_dev = input_allocate_device();
	if (!input_dev)
		return -ENOMEM;

	input_dev->name = "m68k beeper";
	input_dev->phys = "m68k/generic";
	input_dev->id.bustype = BUS_HOST;
	input_dev->id.vendor  = 0x001f;
	input_dev->id.product = 0x0001;
	input_dev->id.version = 0x0100;
	input_dev->dev.parent = &dev->dev;

	input_dev->evbit[0] = BIT_MASK(EV_SND);
	input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
	input_dev->event = m68kspkr_event;

	err = input_register_device(input_dev);
	if (err) {
		input_free_device(input_dev);
		return err;
	}

	platform_set_drvdata(dev, input_dev);

	return 0;
}

static int __devexit m68kspkr_remove(struct platform_device *dev)
{
	struct input_dev *input_dev = platform_get_drvdata(dev);

	input_unregister_device(input_dev);
	platform_set_drvdata(dev, NULL);
	/* turn off the speaker */
	m68kspkr_event(NULL, EV_SND, SND_BELL, 0);

	return 0;
}

static void m68kspkr_shutdown(struct platform_device *dev)
{
	/* turn off the speaker */
	m68kspkr_event(NULL, EV_SND, SND_BELL, 0);
}

static struct platform_driver m68kspkr_platform_driver = {
	.driver		= {
		.name	= "m68kspkr",
		.owner	= THIS_MODULE,
	},
	.probe		= m68kspkr_probe,
	.remove		= m68kspkr_remove,
	.shutdown	= m68kspkr_shutdown,
};

static int __init m68kspkr_init(void)
{
	int err;

	if (!mach_beep) {
		printk(KERN_INFO "m68kspkr: no lowlevel beep support\n");
		return -ENODEV;
        }

	err = platform_driver_register(&m68kspkr_platform_driver);
	if (err)
		return err;

	m68kspkr_platform_device = platform_device_alloc("m68kspkr", -1);
	if (!m68kspkr_platform_device) {
		err = -ENOMEM;
		goto err_unregister_driver;
	}

	err = platform_device_add(m68kspkr_platform_device);
	if (err)
		goto err_free_device;

	return 0;

 err_free_device:
	platform_device_put(m68kspkr_platform_device);
 err_unregister_driver:
	platform_driver_unregister(&m68kspkr_platform_driver);

	return err;
}

static void __exit m68kspkr_exit(void)
{
	platform_device_unregister(m68kspkr_platform_device);
	platform_driver_unregister(&m68kspkr_platform_driver);
}

module_init(m68kspkr_init);
module_exit(m68kspkr_exit);
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);
7b19ada2 JS	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
	83	static int __devexit m68kspkr_remove(struct platform_device *dev)
	84	{
	85	struct input_dev *input_dev = platform_get_drvdata(dev);
	86
	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);
	91
	92	return 0;
	93	}
	94
	95	static void m68kspkr_shutdown(struct platform_device *dev)
	96	{
	97	/* turn off the speaker */
	98	m68kspkr_event(NULL, EV_SND, SND_BELL, 0);
	99	}
	100
	101	static struct platform_driver m68kspkr_platform_driver = {
	102	.driver = {
	103	.name = "m68kspkr",
	104	.owner = THIS_MODULE,
	105	},
	106	.probe = m68kspkr_probe,
1cb0aa88	107	.remove = m68kspkr_remove,
1f75e6bd DT	108	.shutdown = m68kspkr_shutdown,
	109	};
	110
1da177e4 LT	111	static int __init m68kspkr_init(void)
1da177e4 LT	112	{
1f75e6bd DT	113	int err;
	114
	115	if (!mach_beep) {
76b7cddf DT	116	printk(KERN_INFO "m68kspkr: no lowlevel beep support\n");
76b7cddf DT	117	return -ENODEV;
1da177e4 LT	118	}
1da177e4 LT	119
1f75e6bd DT	120	err = platform_driver_register(&m68kspkr_platform_driver);
	121	if (err)
	122	return err;
1da177e4	123
1f75e6bd DT	124	m68kspkr_platform_device = platform_device_alloc("m68kspkr", -1);
	125	if (!m68kspkr_platform_device) {
	126	err = -ENOMEM;
	127	goto err_unregister_driver;
	128	}
1da177e4	129
1f75e6bd DT	130	err = platform_device_add(m68kspkr_platform_device);
	131	if (err)
	132	goto err_free_device;
1da177e4 LT	133
1da177e4 LT	134	return 0;
1f75e6bd DT	135
	136	err_free_device:
	137	platform_device_put(m68kspkr_platform_device);
	138	err_unregister_driver:
	139	platform_driver_unregister(&m68kspkr_platform_driver);
	140
	141	return err;
1da177e4 LT	142	}
	143
	144	static void __exit m68kspkr_exit(void)
	145	{
1f75e6bd DT	146	platform_device_unregister(m68kspkr_platform_device);
1f75e6bd DT	147	platform_driver_unregister(&m68kspkr_platform_driver);
1da177e4 LT	148	}
	149
	150	module_init(m68kspkr_init);
	151	module_exit(m68kspkr_exit);