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git.proxmox.com Git - mirror_ubuntu-focal-kernel.git/blob - drivers/input/mouse/logibm.c
2 * $Id: logibm.c,v 1.11 2001/09/25 10:12:07 vojtech Exp $
4 * Copyright (c) 1999-2001 Vojtech Pavlik
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
15 * Logitech Bus Mouse Driver for Linux
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
21 * the Free Software Foundation; either version 2 of the License, or
22 * (at your option) any later version.
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.
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
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
38 #include <linux/module.h>
39 #include <linux/moduleparam.h>
40 #include <linux/delay.h>
41 #include <linux/ioport.h>
42 #include <linux/init.h>
43 #include <linux/input.h>
44 #include <linux/interrupt.h>
49 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
50 MODULE_DESCRIPTION("Logitech busmouse driver");
51 MODULE_LICENSE("GPL");
53 #define LOGIBM_BASE 0x23c
54 #define LOGIBM_EXTENT 4
56 #define LOGIBM_DATA_PORT LOGIBM_BASE + 0
57 #define LOGIBM_SIGNATURE_PORT LOGIBM_BASE + 1
58 #define LOGIBM_CONTROL_PORT LOGIBM_BASE + 2
59 #define LOGIBM_CONFIG_PORT LOGIBM_BASE + 3
61 #define LOGIBM_ENABLE_IRQ 0x00
62 #define LOGIBM_DISABLE_IRQ 0x10
63 #define LOGIBM_READ_X_LOW 0x80
64 #define LOGIBM_READ_X_HIGH 0xa0
65 #define LOGIBM_READ_Y_LOW 0xc0
66 #define LOGIBM_READ_Y_HIGH 0xe0
68 #define LOGIBM_DEFAULT_MODE 0x90
69 #define LOGIBM_CONFIG_BYTE 0x91
70 #define LOGIBM_SIGNATURE_BYTE 0xa5
74 static int logibm_irq
= LOGIBM_IRQ
;
75 module_param_named(irq
, logibm_irq
, uint
, 0);
76 MODULE_PARM_DESC(irq
, "IRQ number (5=default)");
78 static struct input_dev
*logibm_dev
;
80 static irqreturn_t
logibm_interrupt(int irq
, void *dev_id
)
83 unsigned char buttons
;
85 outb(LOGIBM_READ_X_LOW
, LOGIBM_CONTROL_PORT
);
86 dx
= (inb(LOGIBM_DATA_PORT
) & 0xf);
87 outb(LOGIBM_READ_X_HIGH
, LOGIBM_CONTROL_PORT
);
88 dx
|= (inb(LOGIBM_DATA_PORT
) & 0xf) << 4;
89 outb(LOGIBM_READ_Y_LOW
, LOGIBM_CONTROL_PORT
);
90 dy
= (inb(LOGIBM_DATA_PORT
) & 0xf);
91 outb(LOGIBM_READ_Y_HIGH
, LOGIBM_CONTROL_PORT
);
92 buttons
= inb(LOGIBM_DATA_PORT
);
93 dy
|= (buttons
& 0xf) << 4;
94 buttons
= ~buttons
>> 5;
96 input_report_rel(logibm_dev
, REL_X
, dx
);
97 input_report_rel(logibm_dev
, REL_Y
, dy
);
98 input_report_key(logibm_dev
, BTN_RIGHT
, buttons
& 1);
99 input_report_key(logibm_dev
, BTN_MIDDLE
, buttons
& 2);
100 input_report_key(logibm_dev
, BTN_LEFT
, buttons
& 4);
101 input_sync(logibm_dev
);
103 outb(LOGIBM_ENABLE_IRQ
, LOGIBM_CONTROL_PORT
);
107 static int logibm_open(struct input_dev
*dev
)
109 if (request_irq(logibm_irq
, logibm_interrupt
, 0, "logibm", NULL
)) {
110 printk(KERN_ERR
"logibm.c: Can't allocate irq %d\n", logibm_irq
);
113 outb(LOGIBM_ENABLE_IRQ
, LOGIBM_CONTROL_PORT
);
117 static void logibm_close(struct input_dev
*dev
)
119 outb(LOGIBM_DISABLE_IRQ
, LOGIBM_CONTROL_PORT
);
120 free_irq(logibm_irq
, NULL
);
123 static int __init
logibm_init(void)
127 if (!request_region(LOGIBM_BASE
, LOGIBM_EXTENT
, "logibm")) {
128 printk(KERN_ERR
"logibm.c: Can't allocate ports at %#x\n", LOGIBM_BASE
);
132 outb(LOGIBM_CONFIG_BYTE
, LOGIBM_CONFIG_PORT
);
133 outb(LOGIBM_SIGNATURE_BYTE
, LOGIBM_SIGNATURE_PORT
);
136 if (inb(LOGIBM_SIGNATURE_PORT
) != LOGIBM_SIGNATURE_BYTE
) {
137 printk(KERN_ERR
"logibm.c: Didn't find Logitech busmouse at %#x\n", LOGIBM_BASE
);
139 goto err_release_region
;
142 outb(LOGIBM_DEFAULT_MODE
, LOGIBM_CONFIG_PORT
);
143 outb(LOGIBM_DISABLE_IRQ
, LOGIBM_CONTROL_PORT
);
145 logibm_dev
= input_allocate_device();
147 printk(KERN_ERR
"logibm.c: Not enough memory for input device\n");
149 goto err_release_region
;
152 logibm_dev
->name
= "Logitech bus mouse";
153 logibm_dev
->phys
= "isa023c/input0";
154 logibm_dev
->id
.bustype
= BUS_ISA
;
155 logibm_dev
->id
.vendor
= 0x0003;
156 logibm_dev
->id
.product
= 0x0001;
157 logibm_dev
->id
.version
= 0x0100;
159 logibm_dev
->evbit
[0] = BIT_MASK(EV_KEY
) | BIT_MASK(EV_REL
);
160 logibm_dev
->keybit
[BIT_WORD(BTN_LEFT
)] = BIT_MASK(BTN_LEFT
) |
161 BIT_MASK(BTN_MIDDLE
) | BIT_MASK(BTN_RIGHT
);
162 logibm_dev
->relbit
[0] = BIT_MASK(REL_X
) | BIT_MASK(REL_Y
);
164 logibm_dev
->open
= logibm_open
;
165 logibm_dev
->close
= logibm_close
;
167 err
= input_register_device(logibm_dev
);
174 input_free_device(logibm_dev
);
176 release_region(LOGIBM_BASE
, LOGIBM_EXTENT
);
181 static void __exit
logibm_exit(void)
183 input_unregister_device(logibm_dev
);
184 release_region(LOGIBM_BASE
, LOGIBM_EXTENT
);
187 module_init(logibm_init
);
188 module_exit(logibm_exit
);