[mirror_ubuntu-jammy-kernel.git] / drivers / input / mouse / logibm.c

/*
 * $Id: logibm.c,v 1.11 2001/09/25 10:12:07 vojtech Exp $
 *
 *  Copyright (c) 1999-2001 Vojtech Pavlik
 *
 *  Based on the work of:
 *	James Banks		Matthew Dillon
 *	David Giller		Nathan Laredo
 *	Linus Torvalds		Johan Myreen
 *	Cliff Matthews		Philip Blundell
 *	Russell King
 */

/*
 * Logitech Bus Mouse Driver for Linux
 */

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * Should you need to contact me, the author, you can do so either by
 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
 */

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

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

MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION("Logitech busmouse driver");
MODULE_LICENSE("GPL");

#define	LOGIBM_BASE		0x23c
#define	LOGIBM_EXTENT		4

#define	LOGIBM_DATA_PORT	LOGIBM_BASE + 0
#define	LOGIBM_SIGNATURE_PORT	LOGIBM_BASE + 1
#define	LOGIBM_CONTROL_PORT	LOGIBM_BASE + 2
#define	LOGIBM_CONFIG_PORT	LOGIBM_BASE + 3

#define	LOGIBM_ENABLE_IRQ	0x00
#define	LOGIBM_DISABLE_IRQ	0x10
#define	LOGIBM_READ_X_LOW	0x80
#define	LOGIBM_READ_X_HIGH	0xa0
#define	LOGIBM_READ_Y_LOW	0xc0
#define	LOGIBM_READ_Y_HIGH	0xe0

#define LOGIBM_DEFAULT_MODE	0x90
#define LOGIBM_CONFIG_BYTE	0x91
#define LOGIBM_SIGNATURE_BYTE	0xa5

#define LOGIBM_IRQ		5

static int logibm_irq = LOGIBM_IRQ;
module_param_named(irq, logibm_irq, uint, 0);
MODULE_PARM_DESC(irq, "IRQ number (5=default)");

static struct input_dev *logibm_dev;

static irqreturn_t logibm_interrupt(int irq, void *dev_id)
{
	char dx, dy;
	unsigned char buttons;

	outb(LOGIBM_READ_X_LOW, LOGIBM_CONTROL_PORT);
	dx = (inb(LOGIBM_DATA_PORT) & 0xf);
	outb(LOGIBM_READ_X_HIGH, LOGIBM_CONTROL_PORT);
	dx |= (inb(LOGIBM_DATA_PORT) & 0xf) << 4;
	outb(LOGIBM_READ_Y_LOW, LOGIBM_CONTROL_PORT);
	dy = (inb(LOGIBM_DATA_PORT) & 0xf);
	outb(LOGIBM_READ_Y_HIGH, LOGIBM_CONTROL_PORT);
	buttons = inb(LOGIBM_DATA_PORT);
	dy |= (buttons & 0xf) << 4;
	buttons = ~buttons >> 5;

	input_report_rel(logibm_dev, REL_X, dx);
	input_report_rel(logibm_dev, REL_Y, dy);
	input_report_key(logibm_dev, BTN_RIGHT,  buttons & 1);
	input_report_key(logibm_dev, BTN_MIDDLE, buttons & 2);
	input_report_key(logibm_dev, BTN_LEFT,   buttons & 4);
	input_sync(logibm_dev);

	outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT);
	return IRQ_HANDLED;
}

static int logibm_open(struct input_dev *dev)
{
	if (request_irq(logibm_irq, logibm_interrupt, 0, "logibm", NULL)) {
		printk(KERN_ERR "logibm.c: Can't allocate irq %d\n", logibm_irq);
		return -EBUSY;
	}
	outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT);
	return 0;
}

static void logibm_close(struct input_dev *dev)
{
	outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT);
	free_irq(logibm_irq, NULL);
}

static int __init logibm_init(void)
{
	int err;

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

	outb(LOGIBM_CONFIG_BYTE, LOGIBM_CONFIG_PORT);
	outb(LOGIBM_SIGNATURE_BYTE, LOGIBM_SIGNATURE_PORT);
	udelay(100);

	if (inb(LOGIBM_SIGNATURE_PORT) != LOGIBM_SIGNATURE_BYTE) {
		printk(KERN_INFO "logibm.c: Didn't find Logitech busmouse at %#x\n", LOGIBM_BASE);
		err = -ENODEV;
		goto err_release_region;
	}

	outb(LOGIBM_DEFAULT_MODE, LOGIBM_CONFIG_PORT);
	outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT);

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

	logibm_dev->name = "Logitech bus mouse";
	logibm_dev->phys = "isa023c/input0";
	logibm_dev->id.bustype = BUS_ISA;
	logibm_dev->id.vendor  = 0x0003;
	logibm_dev->id.product = 0x0001;
	logibm_dev->id.version = 0x0100;

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

	logibm_dev->open  = logibm_open;
	logibm_dev->close = logibm_close;

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

	return 0;

 err_free_dev:
	input_free_device(logibm_dev);
 err_release_region:
	release_region(LOGIBM_BASE, LOGIBM_EXTENT);

	return err;
}

static void __exit logibm_exit(void)
{
	input_unregister_device(logibm_dev);
	release_region(LOGIBM_BASE, LOGIBM_EXTENT);
}

module_init(logibm_init);
module_exit(logibm_exit);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* $Id: logibm.c,v 1.11 2001/09/25 10:12:07 vojtech Exp $
	3	*
	4	* Copyright (c) 1999-2001 Vojtech Pavlik
	5	*
	6	* Based on the work of:
	7	* James Banks Matthew Dillon
	8	* David Giller Nathan Laredo
	9	* Linus Torvalds Johan Myreen
	10	* Cliff Matthews Philip Blundell
	11	* Russell King
	12	*/
	13
	14	/*
	15	* Logitech Bus Mouse Driver for Linux
	16	*/
	17
	18	/*
	19	* This program is free software; you can redistribute it and/or modify
	20	* it under the terms of the GNU General Public License as published by
968ac842	21	* the Free Software Foundation; either version 2 of the License, or
1da177e4	22	* (at your option) any later version.
968ac842	23	*
1da177e4 LT	24	* This program is distributed in the hope that it will be useful,
	25	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	26	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	27	* GNU General Public License for more details.
968ac842	28	*
1da177e4 LT	29	* You should have received a copy of the GNU General Public License
	30	* along with this program; if not, write to the Free Software
	31	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
968ac842	32	*
1da177e4 LT	33	* Should you need to contact me, the author, you can do so either by
	34	* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
	35	* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
	36	*/
	37
	38	#include <linux/module.h>
1da177e4 LT	39	#include <linux/delay.h>
	40	#include <linux/ioport.h>
	41	#include <linux/init.h>
	42	#include <linux/input.h>
	43	#include <linux/interrupt.h>
	44
	45	#include <asm/io.h>
	46	#include <asm/irq.h>
	47
	48	MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
	49	MODULE_DESCRIPTION("Logitech busmouse driver");
	50	MODULE_LICENSE("GPL");
	51
	52	#define LOGIBM_BASE 0x23c
	53	#define LOGIBM_EXTENT 4
	54
	55	#define LOGIBM_DATA_PORT LOGIBM_BASE + 0
	56	#define LOGIBM_SIGNATURE_PORT LOGIBM_BASE + 1
	57	#define LOGIBM_CONTROL_PORT LOGIBM_BASE + 2
	58	#define LOGIBM_CONFIG_PORT LOGIBM_BASE + 3
	59
	60	#define LOGIBM_ENABLE_IRQ 0x00
	61	#define LOGIBM_DISABLE_IRQ 0x10
	62	#define LOGIBM_READ_X_LOW 0x80
	63	#define LOGIBM_READ_X_HIGH 0xa0
	64	#define LOGIBM_READ_Y_LOW 0xc0
	65	#define LOGIBM_READ_Y_HIGH 0xe0
	66
	67	#define LOGIBM_DEFAULT_MODE 0x90
	68	#define LOGIBM_CONFIG_BYTE 0x91
	69	#define LOGIBM_SIGNATURE_BYTE 0xa5
	70
	71	#define LOGIBM_IRQ 5
	72
	73	static int logibm_irq = LOGIBM_IRQ;
	74	module_param_named(irq, logibm_irq, uint, 0);
	75	MODULE_PARM_DESC(irq, "IRQ number (5=default)");
	76
2e5b636b	77	static struct input_dev *logibm_dev;
1da177e4	78
7d12e780	79	static irqreturn_t logibm_interrupt(int irq, void *dev_id)
1da177e4 LT	80	{
	81	char dx, dy;
	82	unsigned char buttons;
	83
	84	outb(LOGIBM_READ_X_LOW, LOGIBM_CONTROL_PORT);
	85	dx = (inb(LOGIBM_DATA_PORT) & 0xf);
	86	outb(LOGIBM_READ_X_HIGH, LOGIBM_CONTROL_PORT);
	87	dx \|= (inb(LOGIBM_DATA_PORT) & 0xf) << 4;
	88	outb(LOGIBM_READ_Y_LOW, LOGIBM_CONTROL_PORT);
	89	dy = (inb(LOGIBM_DATA_PORT) & 0xf);
	90	outb(LOGIBM_READ_Y_HIGH, LOGIBM_CONTROL_PORT);
	91	buttons = inb(LOGIBM_DATA_PORT);
	92	dy \|= (buttons & 0xf) << 4;
	93	buttons = ~buttons >> 5;
	94
2e5b636b DT	95	input_report_rel(logibm_dev, REL_X, dx);
	96	input_report_rel(logibm_dev, REL_Y, dy);
	97	input_report_key(logibm_dev, BTN_RIGHT, buttons & 1);
	98	input_report_key(logibm_dev, BTN_MIDDLE, buttons & 2);
	99	input_report_key(logibm_dev, BTN_LEFT, buttons & 4);
	100	input_sync(logibm_dev);
1da177e4 LT	101
	102	outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT);
	103	return IRQ_HANDLED;
	104	}
	105
2e5b636b DT	106	static int logibm_open(struct input_dev *dev)
	107	{
	108	if (request_irq(logibm_irq, logibm_interrupt, 0, "logibm", NULL)) {
	109	printk(KERN_ERR "logibm.c: Can't allocate irq %d\n", logibm_irq);
	110	return -EBUSY;
	111	}
	112	outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT);
	113	return 0;
	114	}
	115
	116	static void logibm_close(struct input_dev *dev)
	117	{
	118	outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT);
	119	free_irq(logibm_irq, NULL);
	120	}
	121
1da177e4 LT	122	static int __init logibm_init(void)
1da177e4 LT	123	{
72155615 DT	124	int err;
72155615 DT	125
1da177e4 LT	126	if (!request_region(LOGIBM_BASE, LOGIBM_EXTENT, "logibm")) {
	127	printk(KERN_ERR "logibm.c: Can't allocate ports at %#x\n", LOGIBM_BASE);
	128	return -EBUSY;
	129	}
	130
	131	outb(LOGIBM_CONFIG_BYTE, LOGIBM_CONFIG_PORT);
	132	outb(LOGIBM_SIGNATURE_BYTE, LOGIBM_SIGNATURE_PORT);
	133	udelay(100);
	134
	135	if (inb(LOGIBM_SIGNATURE_PORT) != LOGIBM_SIGNATURE_BYTE) {
2a0f9c4c	136	printk(KERN_INFO "logibm.c: Didn't find Logitech busmouse at %#x\n", LOGIBM_BASE);
72155615 DT	137	err = -ENODEV;
72155615 DT	138	goto err_release_region;
1da177e4 LT	139	}
	140
	141	outb(LOGIBM_DEFAULT_MODE, LOGIBM_CONFIG_PORT);
	142	outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT);
	143
72155615 DT	144	logibm_dev = input_allocate_device();
72155615 DT	145	if (!logibm_dev) {
2e5b636b	146	printk(KERN_ERR "logibm.c: Not enough memory for input device\n");
72155615 DT	147	err = -ENOMEM;
72155615 DT	148	goto err_release_region;
2e5b636b DT	149	}
	150
	151	logibm_dev->name = "Logitech bus mouse";
	152	logibm_dev->phys = "isa023c/input0";
	153	logibm_dev->id.bustype = BUS_ISA;
	154	logibm_dev->id.vendor = 0x0003;
	155	logibm_dev->id.product = 0x0001;
	156	logibm_dev->id.version = 0x0100;
	157
7b19ada2 JS	158	logibm_dev->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_REL);
	159	logibm_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) \|
	160	BIT_MASK(BTN_MIDDLE) \| BIT_MASK(BTN_RIGHT);
	161	logibm_dev->relbit[0] = BIT_MASK(REL_X) \| BIT_MASK(REL_Y);
2e5b636b DT	162
	163	logibm_dev->open = logibm_open;
	164	logibm_dev->close = logibm_close;
968ac842	165
72155615 DT	166	err = input_register_device(logibm_dev);
	167	if (err)
	168	goto err_free_dev;
1da177e4 LT	169
1da177e4 LT	170	return 0;
72155615 DT	171
	172	err_free_dev:
	173	input_free_device(logibm_dev);
	174	err_release_region:
	175	release_region(LOGIBM_BASE, LOGIBM_EXTENT);
	176
	177	return err;
1da177e4 LT	178	}
	179
	180	static void __exit logibm_exit(void)
	181	{
2e5b636b	182	input_unregister_device(logibm_dev);
1da177e4 LT	183	release_region(LOGIBM_BASE, LOGIBM_EXTENT);
	184	}
	185
	186	module_init(logibm_init);
	187	module_exit(logibm_exit);