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

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