1 /*
2 * $Id: inport.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 * Teemu Rantanen Derrick Cole
8 * Peter Cervasio Christoph Niemann
9 * Philip Blundell Russell King
10 * Bob Harris
11 */
12
13 /*
14 * Inport (ATI XL and Microsoft) busmouse driver for Linux
15 */
16
17 /*
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2 of the License, or
21 * (at your option) any later version.
22 *
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
31 *
32 * Should you need to contact me, the author, you can do so either by
33 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
34 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
35 */
36
37 #include <linux/module.h>
38 #include <linux/ioport.h>
39 #include <linux/init.h>
40 #include <linux/interrupt.h>
41 #include <linux/input.h>
42
43 #include <asm/io.h>
44 #include <asm/irq.h>
45
46 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
47 MODULE_DESCRIPTION("Inport (ATI XL and Microsoft) busmouse driver");
48 MODULE_LICENSE("GPL");
49
50 #define INPORT_BASE 0x23c
51 #define INPORT_EXTENT 4
52
53 #define INPORT_CONTROL_PORT INPORT_BASE + 0
54 #define INPORT_DATA_PORT INPORT_BASE + 1
55 #define INPORT_SIGNATURE_PORT INPORT_BASE + 2
56
57 #define INPORT_REG_BTNS 0x00
58 #define INPORT_REG_X 0x01
59 #define INPORT_REG_Y 0x02
60 #define INPORT_REG_MODE 0x07
61 #define INPORT_RESET 0x80
62
63 #ifdef CONFIG_MOUSE_ATIXL
64 #define INPORT_NAME "ATI XL Mouse"
65 #define INPORT_VENDOR 0x0002
66 #define INPORT_SPEED_30HZ 0x01
67 #define INPORT_SPEED_50HZ 0x02
68 #define INPORT_SPEED_100HZ 0x03
69 #define INPORT_SPEED_200HZ 0x04
70 #define INPORT_MODE_BASE INPORT_SPEED_100HZ
71 #define INPORT_MODE_IRQ 0x08
72 #else
73 #define INPORT_NAME "Microsoft InPort Mouse"
74 #define INPORT_VENDOR 0x0001
75 #define INPORT_MODE_BASE 0x10
76 #define INPORT_MODE_IRQ 0x01
77 #endif
78 #define INPORT_MODE_HOLD 0x20
79
80 #define INPORT_IRQ 5
81
82 static int inport_irq = INPORT_IRQ;
83 module_param_named(irq, inport_irq, uint, 0);
84 MODULE_PARM_DESC(irq, "IRQ number (5=default)");
85
86 static struct input_dev *inport_dev;
87
88 static irqreturn_t inport_interrupt(int irq, void *dev_id)
89 {
90 unsigned char buttons;
91
92 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
93 outb(INPORT_MODE_HOLD | INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT);
94
95 outb(INPORT_REG_X, INPORT_CONTROL_PORT);
96 input_report_rel(inport_dev, REL_X, inb(INPORT_DATA_PORT));
97
98 outb(INPORT_REG_Y, INPORT_CONTROL_PORT);
99 input_report_rel(inport_dev, REL_Y, inb(INPORT_DATA_PORT));
100
101 outb(INPORT_REG_BTNS, INPORT_CONTROL_PORT);
102 buttons = inb(INPORT_DATA_PORT);
103
104 input_report_key(inport_dev, BTN_MIDDLE, buttons & 1);
105 input_report_key(inport_dev, BTN_LEFT, buttons & 2);
106 input_report_key(inport_dev, BTN_RIGHT, buttons & 4);
107
108 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
109 outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT);
110
111 input_sync(inport_dev);
112 return IRQ_HANDLED;
113 }
114
115 static int inport_open(struct input_dev *dev)
116 {
117 if (request_irq(inport_irq, inport_interrupt, 0, "inport", NULL))
118 return -EBUSY;
119 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
120 outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT);
121
122 return 0;
123 }
124
125 static void inport_close(struct input_dev *dev)
126 {
127 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
128 outb(INPORT_MODE_BASE, INPORT_DATA_PORT);
129 free_irq(inport_irq, NULL);
130 }
131
132 static int __init inport_init(void)
133 {
134 unsigned char a, b, c;
135 int err;
136
137 if (!request_region(INPORT_BASE, INPORT_EXTENT, "inport")) {
138 printk(KERN_ERR "inport.c: Can't allocate ports at %#x\n", INPORT_BASE);
139 return -EBUSY;
140 }
141
142 a = inb(INPORT_SIGNATURE_PORT);
143 b = inb(INPORT_SIGNATURE_PORT);
144 c = inb(INPORT_SIGNATURE_PORT);
145 if (a == b || a != c) {
146 printk(KERN_INFO "inport.c: Didn't find InPort mouse at %#x\n", INPORT_BASE);
147 err = -ENODEV;
148 goto err_release_region;
149 }
150
151 inport_dev = input_allocate_device();
152 if (!inport_dev) {
153 printk(KERN_ERR "inport.c: Not enough memory for input device\n");
154 err = -ENOMEM;
155 goto err_release_region;
156 }
157
158 inport_dev->name = INPORT_NAME;
159 inport_dev->phys = "isa023c/input0";
160 inport_dev->id.bustype = BUS_ISA;
161 inport_dev->id.vendor = INPORT_VENDOR;
162 inport_dev->id.product = 0x0001;
163 inport_dev->id.version = 0x0100;
164
165 inport_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
166 inport_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
167 BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
168 inport_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
169
170 inport_dev->open = inport_open;
171 inport_dev->close = inport_close;
172
173 outb(INPORT_RESET, INPORT_CONTROL_PORT);
174 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
175 outb(INPORT_MODE_BASE, INPORT_DATA_PORT);
176
177 err = input_register_device(inport_dev);
178 if (err)
179 goto err_free_dev;
180
181 return 0;
182
183 err_free_dev:
184 input_free_device(inport_dev);
185 err_release_region:
186 release_region(INPORT_BASE, INPORT_EXTENT);
187
188 return err;
189 }
190
191 static void __exit inport_exit(void)
192 {
193 input_unregister_device(inport_dev);
194 release_region(INPORT_BASE, INPORT_EXTENT);
195 }
196
197 module_init(inport_init);
198 module_exit(inport_exit);
199
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