[linux-2.6-block.git] / drivers / input / misc / pcspkr.c

/*
 *  PC Speaker beeper driver for Linux
 *
 *  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/i8253.h>
#include <linux/input.h>
#include <linux/platform_device.h>
#include <linux/timex.h>
#include <linux/io.h>

MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION("PC Speaker beeper driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:pcspkr");

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

	if (type != EV_SND)
		return -EINVAL;

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

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

	raw_spin_lock_irqsave(&i8253_lock, flags);

	if (count) {
		/* set command for counter 2, 2 byte write */
		outb_p(0xB6, 0x43);
		/* select desired HZ */
		outb_p(count & 0xff, 0x42);
		outb((count >> 8) & 0xff, 0x42);
		/* enable counter 2 */
		outb_p(inb_p(0x61) | 3, 0x61);
	} else {
		/* disable counter 2 */
		outb(inb_p(0x61) & 0xFC, 0x61);
	}

	raw_spin_unlock_irqrestore(&i8253_lock, flags);

	return 0;
}

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

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

	pcspkr_dev->name = "PC Speaker";
	pcspkr_dev->phys = "isa0061/input0";
	pcspkr_dev->id.bustype = BUS_ISA;
	pcspkr_dev->id.vendor = 0x001f;
	pcspkr_dev->id.product = 0x0001;
	pcspkr_dev->id.version = 0x0100;
	pcspkr_dev->dev.parent = &dev->dev;

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

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

	platform_set_drvdata(dev, pcspkr_dev);

	return 0;
}

static int pcspkr_remove(struct platform_device *dev)
{
	struct input_dev *pcspkr_dev = platform_get_drvdata(dev);

	input_unregister_device(pcspkr_dev);
	/* turn off the speaker */
	pcspkr_event(NULL, EV_SND, SND_BELL, 0);

	return 0;
}

static int pcspkr_suspend(struct device *dev)
{
	pcspkr_event(NULL, EV_SND, SND_BELL, 0);

	return 0;
}

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

static const struct dev_pm_ops pcspkr_pm_ops = {
	.suspend = pcspkr_suspend,
};

static struct platform_driver pcspkr_platform_driver = {
	.driver		= {
		.name	= "pcspkr",
		.pm	= &pcspkr_pm_ops,
	},
	.probe		= pcspkr_probe,
	.remove		= pcspkr_remove,
	.shutdown	= pcspkr_shutdown,
};
module_platform_driver(pcspkr_platform_driver);
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	18	#include <linux/input.h>
59317747	19	#include <linux/platform_device.h>
08604bd9	20	#include <linux/timex.h>
9e04b79c	21	#include <linux/io.h>
1da177e4 LT	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
9e04b79c MC	28	static int pcspkr_event(struct input_dev *dev, unsigned int type,
9e04b79c MC	29	unsigned int code, int value)
1da177e4 LT	30	{
	31	unsigned int count = 0;
	32	unsigned long flags;
	33
	34	if (type != EV_SND)
9e04b79c	35	return -EINVAL;
1da177e4 LT	36
1da177e4 LT	37	switch (code) {
9e04b79c MC	38	case SND_BELL:
	39	if (value)
	40	value = 1000;
	41	case SND_TONE:
	42	break;
	43	default:
	44	return -EINVAL;
1da177e4 LT	45	}
	46
	47	if (value > 20 && value < 32767)
	48	count = PIT_TICK_RATE / value;
	49
ced918eb	50	raw_spin_lock_irqsave(&i8253_lock, flags);
1da177e4 LT	51
1da177e4 LT	52	if (count) {
1da177e4 LT	53	/* set command for counter 2, 2 byte write */
	54	outb_p(0xB6, 0x43);
	55	/* select desired HZ */
	56	outb_p(count & 0xff, 0x42);
	57	outb((count >> 8) & 0xff, 0x42);
59bdb437 ZD	58	/* enable counter 2 */
59bdb437 ZD	59	outb_p(inb_p(0x61) \| 3, 0x61);
1da177e4 LT	60	} else {
	61	/* disable counter 2 */
	62	outb(inb_p(0x61) & 0xFC, 0x61);
	63	}
	64
ced918eb	65	raw_spin_unlock_irqrestore(&i8253_lock, flags);
1da177e4 LT	66
	67	return 0;
	68	}
	69
5298cc4c	70	static int pcspkr_probe(struct platform_device *dev)
1da177e4	71	{
59317747 DT	72	struct input_dev *pcspkr_dev;
	73	int err;
	74
76b7cddf DT	75	pcspkr_dev = input_allocate_device();
	76	if (!pcspkr_dev)
	77	return -ENOMEM;
1da177e4	78
76b7cddf	79	pcspkr_dev->name = "PC Speaker";
1259f2b3	80	pcspkr_dev->phys = "isa0061/input0";
76b7cddf DT	81	pcspkr_dev->id.bustype = BUS_ISA;
	82	pcspkr_dev->id.vendor = 0x001f;
	83	pcspkr_dev->id.product = 0x0001;
	84	pcspkr_dev->id.version = 0x0100;
293e6392	85	pcspkr_dev->dev.parent = &dev->dev;
1da177e4	86
7b19ada2 JS	87	pcspkr_dev->evbit[0] = BIT_MASK(EV_SND);
7b19ada2 JS	88	pcspkr_dev->sndbit[0] = BIT_MASK(SND_BELL) \| BIT_MASK(SND_TONE);
76b7cddf	89	pcspkr_dev->event = pcspkr_event;
1da177e4	90
59317747 DT	91	err = input_register_device(pcspkr_dev);
	92	if (err) {
	93	input_free_device(pcspkr_dev);
	94	return err;
	95	}
	96
	97	platform_set_drvdata(dev, pcspkr_dev);
1da177e4 LT	98
	99	return 0;
	100	}
	101
e2619cf7	102	static int pcspkr_remove(struct platform_device *dev)
59317747 DT	103	{
	104	struct input_dev *pcspkr_dev = platform_get_drvdata(dev);
	105
	106	input_unregister_device(pcspkr_dev);
59317747 DT	107	/* turn off the speaker */
	108	pcspkr_event(NULL, EV_SND, SND_BELL, 0);
	109
	110	return 0;
	111	}
	112
35db715b	113	static int pcspkr_suspend(struct device *dev)
59317747 DT	114	{
	115	pcspkr_event(NULL, EV_SND, SND_BELL, 0);
	116
	117	return 0;
	118	}
	119
	120	static void pcspkr_shutdown(struct platform_device *dev)
1da177e4	121	{
1da177e4 LT	122	/* turn off the speaker */
	123	pcspkr_event(NULL, EV_SND, SND_BELL, 0);
	124	}
	125
47145210	126	static const struct dev_pm_ops pcspkr_pm_ops = {
35db715b FP	127	.suspend = pcspkr_suspend,
	128	};
	129
59317747 DT	130	static struct platform_driver pcspkr_platform_driver = {
	131	.driver = {
	132	.name = "pcspkr",
35db715b	133	.pm = &pcspkr_pm_ops,
59317747 DT	134	},
59317747 DT	135	.probe = pcspkr_probe,
1cb0aa88	136	.remove = pcspkr_remove,
59317747 DT	137	.shutdown = pcspkr_shutdown,
59317747 DT	138	};
840a746b	139	module_platform_driver(pcspkr_platform_driver);
59317747	140