[linux-block.git] / drivers / input / mouse / inport.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (c) 1999-2001 Vojtech Pavlik
 *
 *  Based on the work of:
 *	Teemu Rantanen		Derrick Cole
 *	Peter Cervasio		Christoph Niemann
 *	Philip Blundell		Russell King
 *	Bob Harris
 */

/*
 * Inport (ATI XL and Microsoft) busmouse driver for Linux
 */

/*
 */

#include <linux/module.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/input.h>

#include <asm/io.h>
#include <asm/irq.h>

MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION("Inport (ATI XL and Microsoft) busmouse driver");
MODULE_LICENSE("GPL");

#define INPORT_BASE		0x23c
#define INPORT_EXTENT		4

#define INPORT_CONTROL_PORT	INPORT_BASE + 0
#define INPORT_DATA_PORT	INPORT_BASE + 1
#define INPORT_SIGNATURE_PORT	INPORT_BASE + 2

#define INPORT_REG_BTNS	0x00
#define INPORT_REG_X		0x01
#define INPORT_REG_Y		0x02
#define INPORT_REG_MODE		0x07
#define INPORT_RESET		0x80

#ifdef CONFIG_MOUSE_ATIXL
#define INPORT_NAME		"ATI XL Mouse"
#define INPORT_VENDOR		0x0002
#define INPORT_SPEED_30HZ	0x01
#define INPORT_SPEED_50HZ	0x02
#define INPORT_SPEED_100HZ	0x03
#define INPORT_SPEED_200HZ	0x04
#define INPORT_MODE_BASE	INPORT_SPEED_100HZ
#define INPORT_MODE_IRQ		0x08
#else
#define INPORT_NAME		"Microsoft InPort Mouse"
#define INPORT_VENDOR		0x0001
#define INPORT_MODE_BASE	0x10
#define INPORT_MODE_IRQ		0x01
#endif
#define INPORT_MODE_HOLD	0x20

#define INPORT_IRQ		5

static int inport_irq = INPORT_IRQ;
module_param_hw_named(irq, inport_irq, uint, irq, 0);
MODULE_PARM_DESC(irq, "IRQ number (5=default)");

static struct input_dev *inport_dev;

static irqreturn_t inport_interrupt(int irq, void *dev_id)
{
	unsigned char buttons;

	outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
	outb(INPORT_MODE_HOLD | INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT);

	outb(INPORT_REG_X, INPORT_CONTROL_PORT);
	input_report_rel(inport_dev, REL_X, inb(INPORT_DATA_PORT));

	outb(INPORT_REG_Y, INPORT_CONTROL_PORT);
	input_report_rel(inport_dev, REL_Y, inb(INPORT_DATA_PORT));

	outb(INPORT_REG_BTNS, INPORT_CONTROL_PORT);
	buttons = inb(INPORT_DATA_PORT);

	input_report_key(inport_dev, BTN_MIDDLE, buttons & 1);
	input_report_key(inport_dev, BTN_LEFT,   buttons & 2);
	input_report_key(inport_dev, BTN_RIGHT,  buttons & 4);

	outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
	outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT);

	input_sync(inport_dev);
	return IRQ_HANDLED;
}

static int inport_open(struct input_dev *dev)
{
	if (request_irq(inport_irq, inport_interrupt, 0, "inport", NULL))
		return -EBUSY;
	outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
	outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT);

	return 0;
}

static void inport_close(struct input_dev *dev)
{
	outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
	outb(INPORT_MODE_BASE, INPORT_DATA_PORT);
	free_irq(inport_irq, NULL);
}

static int __init inport_init(void)
{
	unsigned char a, b, c;
	int err;

	if (!request_region(INPORT_BASE, INPORT_EXTENT, "inport")) {
		printk(KERN_ERR "inport.c: Can't allocate ports at %#x\n", INPORT_BASE);
		return -EBUSY;
	}

	a = inb(INPORT_SIGNATURE_PORT);
	b = inb(INPORT_SIGNATURE_PORT);
	c = inb(INPORT_SIGNATURE_PORT);
	if (a == b || a != c) {
		printk(KERN_INFO "inport.c: Didn't find InPort mouse at %#x\n", INPORT_BASE);
		err = -ENODEV;
		goto err_release_region;
	}

	inport_dev = input_allocate_device();
	if (!inport_dev) {
		printk(KERN_ERR "inport.c: Not enough memory for input device\n");
		err = -ENOMEM;
		goto err_release_region;
	}

	inport_dev->name = INPORT_NAME;
	inport_dev->phys = "isa023c/input0";
	inport_dev->id.bustype = BUS_ISA;
	inport_dev->id.vendor  = INPORT_VENDOR;
	inport_dev->id.product = 0x0001;
	inport_dev->id.version = 0x0100;

	inport_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
	inport_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
		BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
	inport_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);

	inport_dev->open  = inport_open;
	inport_dev->close = inport_close;

	outb(INPORT_RESET, INPORT_CONTROL_PORT);
	outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
	outb(INPORT_MODE_BASE, INPORT_DATA_PORT);

	err = input_register_device(inport_dev);
	if (err)
		goto err_free_dev;

	return 0;

 err_free_dev:
	input_free_device(inport_dev);
 err_release_region:
	release_region(INPORT_BASE, INPORT_EXTENT);

	return err;
}

static void __exit inport_exit(void)
{
	input_unregister_device(inport_dev);
	release_region(INPORT_BASE, INPORT_EXTENT);
}

module_init(inport_init);
module_exit(inport_exit);
Commit	Line	Data
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4	2	/*
1da177e4 LT	3	* Copyright (c) 1999-2001 Vojtech Pavlik
	4	*
	5	* Based on the work of:
	6	* Teemu Rantanen Derrick Cole
	7	* Peter Cervasio Christoph Niemann
	8	* Philip Blundell Russell King
	9	* Bob Harris
	10	*/
	11
	12	/*
	13	* Inport (ATI XL and Microsoft) busmouse driver for Linux
	14	*/
	15
	16	/*
1da177e4 LT	17	*/
	18
	19	#include <linux/module.h>
1da177e4 LT	20	#include <linux/ioport.h>
	21	#include <linux/init.h>
	22	#include <linux/interrupt.h>
	23	#include <linux/input.h>
	24
	25	#include <asm/io.h>
	26	#include <asm/irq.h>
	27
	28	MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
	29	MODULE_DESCRIPTION("Inport (ATI XL and Microsoft) busmouse driver");
	30	MODULE_LICENSE("GPL");
	31
	32	#define INPORT_BASE 0x23c
	33	#define INPORT_EXTENT 4
	34
	35	#define INPORT_CONTROL_PORT INPORT_BASE + 0
	36	#define INPORT_DATA_PORT INPORT_BASE + 1
	37	#define INPORT_SIGNATURE_PORT INPORT_BASE + 2
	38
	39	#define INPORT_REG_BTNS 0x00
	40	#define INPORT_REG_X 0x01
	41	#define INPORT_REG_Y 0x02
	42	#define INPORT_REG_MODE 0x07
	43	#define INPORT_RESET 0x80
	44
8370a643	45	#ifdef CONFIG_MOUSE_ATIXL
1da177e4 LT	46	#define INPORT_NAME "ATI XL Mouse"
	47	#define INPORT_VENDOR 0x0002
	48	#define INPORT_SPEED_30HZ 0x01
	49	#define INPORT_SPEED_50HZ 0x02
	50	#define INPORT_SPEED_100HZ 0x03
	51	#define INPORT_SPEED_200HZ 0x04
	52	#define INPORT_MODE_BASE INPORT_SPEED_100HZ
	53	#define INPORT_MODE_IRQ 0x08
	54	#else
	55	#define INPORT_NAME "Microsoft InPort Mouse"
	56	#define INPORT_VENDOR 0x0001
	57	#define INPORT_MODE_BASE 0x10
	58	#define INPORT_MODE_IRQ 0x01
	59	#endif
	60	#define INPORT_MODE_HOLD 0x20
	61
	62	#define INPORT_IRQ 5
	63
	64	static int inport_irq = INPORT_IRQ;
f6b12d04	65	module_param_hw_named(irq, inport_irq, uint, irq, 0);
1da177e4 LT	66	MODULE_PARM_DESC(irq, "IRQ number (5=default)");
1da177e4 LT	67
2e5b636b	68	static struct input_dev *inport_dev;
1da177e4	69
7d12e780	70	static irqreturn_t inport_interrupt(int irq, void *dev_id)
1da177e4 LT	71	{
	72	unsigned char buttons;
	73
	74	outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
	75	outb(INPORT_MODE_HOLD \| INPORT_MODE_IRQ \| INPORT_MODE_BASE, INPORT_DATA_PORT);
	76
1da177e4	77	outb(INPORT_REG_X, INPORT_CONTROL_PORT);
2e5b636b	78	input_report_rel(inport_dev, REL_X, inb(INPORT_DATA_PORT));
1da177e4 LT	79
1da177e4 LT	80	outb(INPORT_REG_Y, INPORT_CONTROL_PORT);
2e5b636b	81	input_report_rel(inport_dev, REL_Y, inb(INPORT_DATA_PORT));
1da177e4 LT	82
	83	outb(INPORT_REG_BTNS, INPORT_CONTROL_PORT);
	84	buttons = inb(INPORT_DATA_PORT);
	85
2e5b636b DT	86	input_report_key(inport_dev, BTN_MIDDLE, buttons & 1);
	87	input_report_key(inport_dev, BTN_LEFT, buttons & 2);
	88	input_report_key(inport_dev, BTN_RIGHT, buttons & 4);
1da177e4 LT	89
	90	outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
	91	outb(INPORT_MODE_IRQ \| INPORT_MODE_BASE, INPORT_DATA_PORT);
	92
2e5b636b	93	input_sync(inport_dev);
1da177e4 LT	94	return IRQ_HANDLED;
	95	}
	96
2e5b636b DT	97	static int inport_open(struct input_dev *dev)
	98	{
	99	if (request_irq(inport_irq, inport_interrupt, 0, "inport", NULL))
	100	return -EBUSY;
	101	outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
	102	outb(INPORT_MODE_IRQ \| INPORT_MODE_BASE, INPORT_DATA_PORT);
	103
	104	return 0;
	105	}
	106
	107	static void inport_close(struct input_dev *dev)
	108	{
	109	outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
	110	outb(INPORT_MODE_BASE, INPORT_DATA_PORT);
	111	free_irq(inport_irq, NULL);
	112	}
	113
1da177e4 LT	114	static int __init inport_init(void)
1da177e4 LT	115	{
2e5b636b	116	unsigned char a, b, c;
72155615	117	int err;
1da177e4 LT	118
	119	if (!request_region(INPORT_BASE, INPORT_EXTENT, "inport")) {
	120	printk(KERN_ERR "inport.c: Can't allocate ports at %#x\n", INPORT_BASE);
	121	return -EBUSY;
	122	}
	123
	124	a = inb(INPORT_SIGNATURE_PORT);
	125	b = inb(INPORT_SIGNATURE_PORT);
	126	c = inb(INPORT_SIGNATURE_PORT);
2e5b636b	127	if (a == b \|\| a != c) {
2a0f9c4c	128	printk(KERN_INFO "inport.c: Didn't find InPort mouse at %#x\n", INPORT_BASE);
72155615 DT	129	err = -ENODEV;
72155615 DT	130	goto err_release_region;
1da177e4 LT	131	}
1da177e4 LT	132
72155615 DT	133	inport_dev = input_allocate_device();
72155615 DT	134	if (!inport_dev) {
2e5b636b	135	printk(KERN_ERR "inport.c: Not enough memory for input device\n");
72155615 DT	136	err = -ENOMEM;
72155615 DT	137	goto err_release_region;
2e5b636b DT	138	}
	139
	140	inport_dev->name = INPORT_NAME;
	141	inport_dev->phys = "isa023c/input0";
	142	inport_dev->id.bustype = BUS_ISA;
	143	inport_dev->id.vendor = INPORT_VENDOR;
	144	inport_dev->id.product = 0x0001;
	145	inport_dev->id.version = 0x0100;
	146
7b19ada2 JS	147	inport_dev->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_REL);
	148	inport_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) \|
	149	BIT_MASK(BTN_MIDDLE) \| BIT_MASK(BTN_RIGHT);
	150	inport_dev->relbit[0] = BIT_MASK(REL_X) \| BIT_MASK(REL_Y);
2e5b636b DT	151
	152	inport_dev->open = inport_open;
	153	inport_dev->close = inport_close;
	154
1da177e4 LT	155	outb(INPORT_RESET, INPORT_CONTROL_PORT);
	156	outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
	157	outb(INPORT_MODE_BASE, INPORT_DATA_PORT);
	158
72155615 DT	159	err = input_register_device(inport_dev);
	160	if (err)
	161	goto err_free_dev;
1da177e4 LT	162
1da177e4 LT	163	return 0;
72155615 DT	164
	165	err_free_dev:
	166	input_free_device(inport_dev);
	167	err_release_region:
	168	release_region(INPORT_BASE, INPORT_EXTENT);
	169
	170	return err;
1da177e4 LT	171	}
	172
	173	static void __exit inport_exit(void)
	174	{
2e5b636b	175	input_unregister_device(inport_dev);
1da177e4 LT	176	release_region(INPORT_BASE, INPORT_EXTENT);
	177	}
	178
	179	module_init(inport_init);
	180	module_exit(inport_exit);