[deliverable/linux.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/init.h>
#include <linux/input.h>
#include <linux/platform_device.h>
#include <linux/timex.h>
#include <asm/io.h>

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

#if defined(CONFIG_MIPS) || defined(CONFIG_X86)
/* Use the global PIT lock ! */
#include <asm/i8253.h>
#else
#include <asm/8253pit.h>
static DEFINE_RAW_SPINLOCK(i8253_lock);
#endif

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 -1;

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

	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 __devinit 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 __devexit pcspkr_remove(struct platform_device *dev)
{
	struct input_dev *pcspkr_dev = platform_get_drvdata(dev);

	input_unregister_device(pcspkr_dev);
	platform_set_drvdata(dev, NULL);
	/* 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",
		.owner	= THIS_MODULE,
		.pm	= &pcspkr_pm_ops,
	},
	.probe		= pcspkr_probe,
	.remove		= __devexit_p(pcspkr_remove),
	.shutdown	= pcspkr_shutdown,
};


static int __init pcspkr_init(void)
{
	return platform_driver_register(&pcspkr_platform_driver);
}

static void __exit pcspkr_exit(void)
{
	platform_driver_unregister(&pcspkr_platform_driver);
}

module_init(pcspkr_init);
module_exit(pcspkr_exit);
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 TG	29	/* Use the global PIT lock ! */
	30	#include <asm/i8253.h>
	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
1da177e4 LT	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 */
59bdb437 ZD	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);
7b19ada2 JS	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);
1da177e4 LT	157	module_exit(pcspkr_exit);