This source file includes following definitions.
- spaceorb_process_packet
- spaceorb_interrupt
- spaceorb_disconnect
- spaceorb_connect
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16 #include <linux/kernel.h>
17 #include <linux/slab.h>
18 #include <linux/module.h>
19 #include <linux/input.h>
20 #include <linux/serio.h>
21
22 #define DRIVER_DESC "SpaceTec SpaceOrb 360 and Avenger 6dof controller driver"
23
24 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
25 MODULE_DESCRIPTION(DRIVER_DESC);
26 MODULE_LICENSE("GPL");
27
28
29
30
31
32 #define SPACEORB_MAX_LENGTH 64
33
34 static int spaceorb_buttons[] = { BTN_TL, BTN_TR, BTN_Y, BTN_X, BTN_B, BTN_A };
35 static int spaceorb_axes[] = { ABS_X, ABS_Y, ABS_Z, ABS_RX, ABS_RY, ABS_RZ };
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37
38
39
40
41 struct spaceorb {
42 struct input_dev *dev;
43 int idx;
44 unsigned char data[SPACEORB_MAX_LENGTH];
45 char phys[32];
46 };
47
48 static unsigned char spaceorb_xor[] = "SpaceWare";
49
50 static unsigned char *spaceorb_errors[] = { "EEPROM storing 0 failed", "Receive queue overflow", "Transmit queue timeout",
51 "Bad packet", "Power brown-out", "EEPROM checksum error", "Hardware fault" };
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57
58 static void spaceorb_process_packet(struct spaceorb *spaceorb)
59 {
60 struct input_dev *dev = spaceorb->dev;
61 unsigned char *data = spaceorb->data;
62 unsigned char c = 0;
63 int axes[6];
64 int i;
65
66 if (spaceorb->idx < 2) return;
67 for (i = 0; i < spaceorb->idx; i++) c ^= data[i];
68 if (c) return;
69
70 switch (data[0]) {
71
72 case 'R':
73 spaceorb->data[spaceorb->idx - 1] = 0;
74 for (i = 1; i < spaceorb->idx && spaceorb->data[i] == ' '; i++);
75 printk(KERN_INFO "input: %s [%s] is %s\n",
76 dev->name, spaceorb->data + i, spaceorb->phys);
77 break;
78
79 case 'D':
80 if (spaceorb->idx != 12) return;
81 for (i = 0; i < 9; i++) spaceorb->data[i+2] ^= spaceorb_xor[i];
82 axes[0] = ( data[2] << 3) | (data[ 3] >> 4);
83 axes[1] = ((data[3] & 0x0f) << 6) | (data[ 4] >> 1);
84 axes[2] = ((data[4] & 0x01) << 9) | (data[ 5] << 2) | (data[4] >> 5);
85 axes[3] = ((data[6] & 0x1f) << 5) | (data[ 7] >> 2);
86 axes[4] = ((data[7] & 0x03) << 8) | (data[ 8] << 1) | (data[7] >> 6);
87 axes[5] = ((data[9] & 0x3f) << 4) | (data[10] >> 3);
88 for (i = 0; i < 6; i++)
89 input_report_abs(dev, spaceorb_axes[i], axes[i] - ((axes[i] & 0x200) ? 1024 : 0));
90 for (i = 0; i < 6; i++)
91 input_report_key(dev, spaceorb_buttons[i], (data[1] >> i) & 1);
92 break;
93
94 case 'K':
95 if (spaceorb->idx != 5) return;
96 for (i = 0; i < 6; i++)
97 input_report_key(dev, spaceorb_buttons[i], (data[2] >> i) & 1);
98
99 break;
100
101 case 'E':
102 if (spaceorb->idx != 4) return;
103 printk(KERN_ERR "spaceorb: Device error. [ ");
104 for (i = 0; i < 7; i++) if (data[1] & (1 << i)) printk("%s ", spaceorb_errors[i]);
105 printk("]\n");
106 break;
107 }
108
109 input_sync(dev);
110 }
111
112 static irqreturn_t spaceorb_interrupt(struct serio *serio,
113 unsigned char data, unsigned int flags)
114 {
115 struct spaceorb* spaceorb = serio_get_drvdata(serio);
116
117 if (~data & 0x80) {
118 if (spaceorb->idx) spaceorb_process_packet(spaceorb);
119 spaceorb->idx = 0;
120 }
121 if (spaceorb->idx < SPACEORB_MAX_LENGTH)
122 spaceorb->data[spaceorb->idx++] = data & 0x7f;
123 return IRQ_HANDLED;
124 }
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129
130 static void spaceorb_disconnect(struct serio *serio)
131 {
132 struct spaceorb* spaceorb = serio_get_drvdata(serio);
133
134 serio_close(serio);
135 serio_set_drvdata(serio, NULL);
136 input_unregister_device(spaceorb->dev);
137 kfree(spaceorb);
138 }
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145
146 static int spaceorb_connect(struct serio *serio, struct serio_driver *drv)
147 {
148 struct spaceorb *spaceorb;
149 struct input_dev *input_dev;
150 int err = -ENOMEM;
151 int i;
152
153 spaceorb = kzalloc(sizeof(struct spaceorb), GFP_KERNEL);
154 input_dev = input_allocate_device();
155 if (!spaceorb || !input_dev)
156 goto fail1;
157
158 spaceorb->dev = input_dev;
159 snprintf(spaceorb->phys, sizeof(spaceorb->phys), "%s/input0", serio->phys);
160
161 input_dev->name = "SpaceTec SpaceOrb 360 / Avenger";
162 input_dev->phys = spaceorb->phys;
163 input_dev->id.bustype = BUS_RS232;
164 input_dev->id.vendor = SERIO_SPACEORB;
165 input_dev->id.product = 0x0001;
166 input_dev->id.version = 0x0100;
167 input_dev->dev.parent = &serio->dev;
168
169 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
170
171 for (i = 0; i < 6; i++)
172 set_bit(spaceorb_buttons[i], input_dev->keybit);
173
174 for (i = 0; i < 6; i++)
175 input_set_abs_params(input_dev, spaceorb_axes[i], -508, 508, 0, 0);
176
177 serio_set_drvdata(serio, spaceorb);
178
179 err = serio_open(serio, drv);
180 if (err)
181 goto fail2;
182
183 err = input_register_device(spaceorb->dev);
184 if (err)
185 goto fail3;
186
187 return 0;
188
189 fail3: serio_close(serio);
190 fail2: serio_set_drvdata(serio, NULL);
191 fail1: input_free_device(input_dev);
192 kfree(spaceorb);
193 return err;
194 }
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199
200 static const struct serio_device_id spaceorb_serio_ids[] = {
201 {
202 .type = SERIO_RS232,
203 .proto = SERIO_SPACEORB,
204 .id = SERIO_ANY,
205 .extra = SERIO_ANY,
206 },
207 { 0 }
208 };
209
210 MODULE_DEVICE_TABLE(serio, spaceorb_serio_ids);
211
212 static struct serio_driver spaceorb_drv = {
213 .driver = {
214 .name = "spaceorb",
215 },
216 .description = DRIVER_DESC,
217 .id_table = spaceorb_serio_ids,
218 .interrupt = spaceorb_interrupt,
219 .connect = spaceorb_connect,
220 .disconnect = spaceorb_disconnect,
221 };
222
223 module_serio_driver(spaceorb_drv);