1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35#include <linux/module.h>
36#include <linux/ioport.h>
37#include <linux/init.h>
38#include <linux/interrupt.h>
39#include <linux/input.h>
40
41#include <asm/io.h>
42#include <asm/irq.h>
43
44MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
45MODULE_DESCRIPTION("Inport (ATI XL and Microsoft) busmouse driver");
46MODULE_LICENSE("GPL");
47
48#define INPORT_BASE 0x23c
49#define INPORT_EXTENT 4
50
51#define INPORT_CONTROL_PORT INPORT_BASE + 0
52#define INPORT_DATA_PORT INPORT_BASE + 1
53#define INPORT_SIGNATURE_PORT INPORT_BASE + 2
54
55#define INPORT_REG_BTNS 0x00
56#define INPORT_REG_X 0x01
57#define INPORT_REG_Y 0x02
58#define INPORT_REG_MODE 0x07
59#define INPORT_RESET 0x80
60
61#ifdef CONFIG_MOUSE_ATIXL
62#define INPORT_NAME "ATI XL Mouse"
63#define INPORT_VENDOR 0x0002
64#define INPORT_SPEED_30HZ 0x01
65#define INPORT_SPEED_50HZ 0x02
66#define INPORT_SPEED_100HZ 0x03
67#define INPORT_SPEED_200HZ 0x04
68#define INPORT_MODE_BASE INPORT_SPEED_100HZ
69#define INPORT_MODE_IRQ 0x08
70#else
71#define INPORT_NAME "Microsoft InPort Mouse"
72#define INPORT_VENDOR 0x0001
73#define INPORT_MODE_BASE 0x10
74#define INPORT_MODE_IRQ 0x01
75#endif
76#define INPORT_MODE_HOLD 0x20
77
78#define INPORT_IRQ 5
79
80static int inport_irq = INPORT_IRQ;
81module_param_named(irq, inport_irq, uint, 0);
82MODULE_PARM_DESC(irq, "IRQ number (5=default)");
83
84static struct input_dev *inport_dev;
85
86static irqreturn_t inport_interrupt(int irq, void *dev_id)
87{
88 unsigned char buttons;
89
90 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
91 outb(INPORT_MODE_HOLD | INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT);
92
93 outb(INPORT_REG_X, INPORT_CONTROL_PORT);
94 input_report_rel(inport_dev, REL_X, inb(INPORT_DATA_PORT));
95
96 outb(INPORT_REG_Y, INPORT_CONTROL_PORT);
97 input_report_rel(inport_dev, REL_Y, inb(INPORT_DATA_PORT));
98
99 outb(INPORT_REG_BTNS, INPORT_CONTROL_PORT);
100 buttons = inb(INPORT_DATA_PORT);
101
102 input_report_key(inport_dev, BTN_MIDDLE, buttons & 1);
103 input_report_key(inport_dev, BTN_LEFT, buttons & 2);
104 input_report_key(inport_dev, BTN_RIGHT, buttons & 4);
105
106 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
107 outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT);
108
109 input_sync(inport_dev);
110 return IRQ_HANDLED;
111}
112
113static int inport_open(struct input_dev *dev)
114{
115 if (request_irq(inport_irq, inport_interrupt, 0, "inport", NULL))
116 return -EBUSY;
117 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
118 outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT);
119
120 return 0;
121}
122
123static void inport_close(struct input_dev *dev)
124{
125 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
126 outb(INPORT_MODE_BASE, INPORT_DATA_PORT);
127 free_irq(inport_irq, NULL);
128}
129
130static int __init inport_init(void)
131{
132 unsigned char a, b, c;
133 int err;
134
135 if (!request_region(INPORT_BASE, INPORT_EXTENT, "inport")) {
136 printk(KERN_ERR "inport.c: Can't allocate ports at %#x\n", INPORT_BASE);
137 return -EBUSY;
138 }
139
140 a = inb(INPORT_SIGNATURE_PORT);
141 b = inb(INPORT_SIGNATURE_PORT);
142 c = inb(INPORT_SIGNATURE_PORT);
143 if (a == b || a != c) {
144 printk(KERN_INFO "inport.c: Didn't find InPort mouse at %#x\n", INPORT_BASE);
145 err = -ENODEV;
146 goto err_release_region;
147 }
148
149 inport_dev = input_allocate_device();
150 if (!inport_dev) {
151 printk(KERN_ERR "inport.c: Not enough memory for input device\n");
152 err = -ENOMEM;
153 goto err_release_region;
154 }
155
156 inport_dev->name = INPORT_NAME;
157 inport_dev->phys = "isa023c/input0";
158 inport_dev->id.bustype = BUS_ISA;
159 inport_dev->id.vendor = INPORT_VENDOR;
160 inport_dev->id.product = 0x0001;
161 inport_dev->id.version = 0x0100;
162
163 inport_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
164 inport_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
165 BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
166 inport_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
167
168 inport_dev->open = inport_open;
169 inport_dev->close = inport_close;
170
171 outb(INPORT_RESET, INPORT_CONTROL_PORT);
172 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
173 outb(INPORT_MODE_BASE, INPORT_DATA_PORT);
174
175 err = input_register_device(inport_dev);
176 if (err)
177 goto err_free_dev;
178
179 return 0;
180
181 err_free_dev:
182 input_free_device(inport_dev);
183 err_release_region:
184 release_region(INPORT_BASE, INPORT_EXTENT);
185
186 return err;
187}
188
189static void __exit inport_exit(void)
190{
191 input_unregister_device(inport_dev);
192 release_region(INPORT_BASE, INPORT_EXTENT);
193}
194
195module_init(inport_init);
196module_exit(inport_exit);
197
