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