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29#include <linux/kernel.h>
30#include <linux/module.h>
31#include <linux/slab.h>
32#include <linux/input.h>
33#include <linux/serio.h>
34
35#define DRIVER_DESC "Logitech WingMan Warrior joystick driver"
36
37MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
38MODULE_DESCRIPTION(DRIVER_DESC);
39MODULE_LICENSE("GPL");
40
41
42
43
44
45#define WARRIOR_MAX_LENGTH 16
46static char warrior_lengths[] = { 0, 4, 12, 3, 4, 4, 0, 0 };
47
48
49
50
51
52struct warrior {
53 struct input_dev *dev;
54 int idx, len;
55 unsigned char data[WARRIOR_MAX_LENGTH];
56 char phys[32];
57};
58
59
60
61
62
63
64static void warrior_process_packet(struct warrior *warrior)
65{
66 struct input_dev *dev = warrior->dev;
67 unsigned char *data = warrior->data;
68
69 if (!warrior->idx) return;
70
71 switch ((data[0] >> 4) & 7) {
72 case 1:
73 input_report_key(dev, BTN_TRIGGER, data[3] & 1);
74 input_report_key(dev, BTN_THUMB, (data[3] >> 1) & 1);
75 input_report_key(dev, BTN_TOP, (data[3] >> 2) & 1);
76 input_report_key(dev, BTN_TOP2, (data[3] >> 3) & 1);
77 break;
78 case 3:
79 input_report_abs(dev, ABS_X, ((data[0] & 8) << 5) - (data[2] | ((data[0] & 4) << 5)));
80 input_report_abs(dev, ABS_Y, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7));
81 break;
82 case 5:
83 input_report_abs(dev, ABS_THROTTLE, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7));
84 input_report_abs(dev, ABS_HAT0X, (data[3] & 2 ? 1 : 0) - (data[3] & 1 ? 1 : 0));
85 input_report_abs(dev, ABS_HAT0Y, (data[3] & 8 ? 1 : 0) - (data[3] & 4 ? 1 : 0));
86 input_report_rel(dev, REL_DIAL, (data[2] | ((data[0] & 4) << 5)) - ((data[0] & 8) << 5));
87 break;
88 }
89 input_sync(dev);
90}
91
92
93
94
95
96
97
98static irqreturn_t warrior_interrupt(struct serio *serio,
99 unsigned char data, unsigned int flags)
100{
101 struct warrior *warrior = serio_get_drvdata(serio);
102
103 if (data & 0x80) {
104 if (warrior->idx) warrior_process_packet(warrior);
105 warrior->idx = 0;
106 warrior->len = warrior_lengths[(data >> 4) & 7];
107 }
108
109 if (warrior->idx < warrior->len)
110 warrior->data[warrior->idx++] = data;
111
112 if (warrior->idx == warrior->len) {
113 if (warrior->idx) warrior_process_packet(warrior);
114 warrior->idx = 0;
115 warrior->len = 0;
116 }
117 return IRQ_HANDLED;
118}
119
120
121
122
123
124static void warrior_disconnect(struct serio *serio)
125{
126 struct warrior *warrior = serio_get_drvdata(serio);
127
128 serio_close(serio);
129 serio_set_drvdata(serio, NULL);
130 input_unregister_device(warrior->dev);
131 kfree(warrior);
132}
133
134
135
136
137
138
139
140static int warrior_connect(struct serio *serio, struct serio_driver *drv)
141{
142 struct warrior *warrior;
143 struct input_dev *input_dev;
144 int err = -ENOMEM;
145
146 warrior = kzalloc(sizeof(struct warrior), GFP_KERNEL);
147 input_dev = input_allocate_device();
148 if (!warrior || !input_dev)
149 goto fail1;
150
151 warrior->dev = input_dev;
152 snprintf(warrior->phys, sizeof(warrior->phys), "%s/input0", serio->phys);
153
154 input_dev->name = "Logitech WingMan Warrior";
155 input_dev->phys = warrior->phys;
156 input_dev->id.bustype = BUS_RS232;
157 input_dev->id.vendor = SERIO_WARRIOR;
158 input_dev->id.product = 0x0001;
159 input_dev->id.version = 0x0100;
160 input_dev->dev.parent = &serio->dev;
161
162 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL) |
163 BIT_MASK(EV_ABS);
164 input_dev->keybit[BIT_WORD(BTN_TRIGGER)] = BIT_MASK(BTN_TRIGGER) |
165 BIT_MASK(BTN_THUMB) | BIT_MASK(BTN_TOP) | BIT_MASK(BTN_TOP2);
166 input_dev->relbit[0] = BIT_MASK(REL_DIAL);
167 input_set_abs_params(input_dev, ABS_X, -64, 64, 0, 8);
168 input_set_abs_params(input_dev, ABS_Y, -64, 64, 0, 8);
169 input_set_abs_params(input_dev, ABS_THROTTLE, -112, 112, 0, 0);
170 input_set_abs_params(input_dev, ABS_HAT0X, -1, 1, 0, 0);
171 input_set_abs_params(input_dev, ABS_HAT0Y, -1, 1, 0, 0);
172
173 serio_set_drvdata(serio, warrior);
174
175 err = serio_open(serio, drv);
176 if (err)
177 goto fail2;
178
179 err = input_register_device(warrior->dev);
180 if (err)
181 goto fail3;
182
183 return 0;
184
185 fail3: serio_close(serio);
186 fail2: serio_set_drvdata(serio, NULL);
187 fail1: input_free_device(input_dev);
188 kfree(warrior);
189 return err;
190}
191
192
193
194
195
196static struct serio_device_id warrior_serio_ids[] = {
197 {
198 .type = SERIO_RS232,
199 .proto = SERIO_WARRIOR,
200 .id = SERIO_ANY,
201 .extra = SERIO_ANY,
202 },
203 { 0 }
204};
205
206MODULE_DEVICE_TABLE(serio, warrior_serio_ids);
207
208static struct serio_driver warrior_drv = {
209 .driver = {
210 .name = "warrior",
211 },
212 .description = DRIVER_DESC,
213 .id_table = warrior_serio_ids,
214 .interrupt = warrior_interrupt,
215 .connect = warrior_connect,
216 .disconnect = warrior_disconnect,
217};
218
219module_serio_driver(warrior_drv);
220