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1da177e4 LT |
1 | /* |
2 | * $Id: spaceorb.c,v 1.15 2002/01/22 20:29:19 vojtech Exp $ | |
3 | * | |
4 | * Copyright (c) 1999-2001 Vojtech Pavlik | |
5 | * | |
6 | * Based on the work of: | |
ab0c3443 | 7 | * David Thompson |
1da177e4 LT |
8 | */ |
9 | ||
10 | /* | |
11 | * SpaceTec SpaceOrb 360 and Avenger 6dof controller driver for Linux | |
12 | */ | |
13 | ||
14 | /* | |
15 | * This program is free software; you can redistribute it and/or modify | |
16 | * it under the terms of the GNU General Public License as published by | |
17 | * the Free Software Foundation; either version 2 of the License, or | |
18 | * (at your option) any later version. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, | |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | * GNU General Public License for more details. | |
24 | * | |
25 | * You should have received a copy of the GNU General Public License | |
26 | * along with this program; if not, write to the Free Software | |
27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
28 | * | |
29 | * Should you need to contact me, the author, you can do so either by | |
30 | * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: | |
31 | * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic | |
32 | */ | |
33 | ||
34 | #include <linux/kernel.h> | |
35 | #include <linux/slab.h> | |
36 | #include <linux/module.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/input.h> | |
39 | #include <linux/serio.h> | |
40 | ||
41 | #define DRIVER_DESC "SpaceTec SpaceOrb 360 and Avenger 6dof controller driver" | |
42 | ||
43 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
44 | MODULE_DESCRIPTION(DRIVER_DESC); | |
45 | MODULE_LICENSE("GPL"); | |
46 | ||
47 | /* | |
48 | * Constants. | |
49 | */ | |
50 | ||
51 | #define SPACEORB_MAX_LENGTH 64 | |
52 | ||
53 | static int spaceorb_buttons[] = { BTN_TL, BTN_TR, BTN_Y, BTN_X, BTN_B, BTN_A }; | |
54 | static int spaceorb_axes[] = { ABS_X, ABS_Y, ABS_Z, ABS_RX, ABS_RY, ABS_RZ }; | |
1da177e4 LT |
55 | |
56 | /* | |
57 | * Per-Orb data. | |
58 | */ | |
59 | ||
60 | struct spaceorb { | |
17dd3f0f | 61 | struct input_dev *dev; |
1da177e4 LT |
62 | int idx; |
63 | unsigned char data[SPACEORB_MAX_LENGTH]; | |
64 | char phys[32]; | |
65 | }; | |
66 | ||
67 | static unsigned char spaceorb_xor[] = "SpaceWare"; | |
68 | ||
69 | static unsigned char *spaceorb_errors[] = { "EEPROM storing 0 failed", "Receive queue overflow", "Transmit queue timeout", | |
70 | "Bad packet", "Power brown-out", "EEPROM checksum error", "Hardware fault" }; | |
71 | ||
72 | /* | |
73 | * spaceorb_process_packet() decodes packets the driver receives from the | |
74 | * SpaceOrb. | |
75 | */ | |
76 | ||
7d12e780 | 77 | static void spaceorb_process_packet(struct spaceorb *spaceorb) |
1da177e4 | 78 | { |
17dd3f0f | 79 | struct input_dev *dev = spaceorb->dev; |
1da177e4 LT |
80 | unsigned char *data = spaceorb->data; |
81 | unsigned char c = 0; | |
82 | int axes[6]; | |
83 | int i; | |
84 | ||
85 | if (spaceorb->idx < 2) return; | |
86 | for (i = 0; i < spaceorb->idx; i++) c ^= data[i]; | |
87 | if (c) return; | |
88 | ||
1da177e4 LT |
89 | switch (data[0]) { |
90 | ||
91 | case 'R': /* Reset packet */ | |
92 | spaceorb->data[spaceorb->idx - 1] = 0; | |
93 | for (i = 1; i < spaceorb->idx && spaceorb->data[i] == ' '; i++); | |
17dd3f0f DT |
94 | printk(KERN_INFO "input: %s [%s] is %s\n", |
95 | dev->name, spaceorb->data + i, spaceorb->phys); | |
1da177e4 LT |
96 | break; |
97 | ||
98 | case 'D': /* Ball + button data */ | |
99 | if (spaceorb->idx != 12) return; | |
100 | for (i = 0; i < 9; i++) spaceorb->data[i+2] ^= spaceorb_xor[i]; | |
101 | axes[0] = ( data[2] << 3) | (data[ 3] >> 4); | |
102 | axes[1] = ((data[3] & 0x0f) << 6) | (data[ 4] >> 1); | |
103 | axes[2] = ((data[4] & 0x01) << 9) | (data[ 5] << 2) | (data[4] >> 5); | |
104 | axes[3] = ((data[6] & 0x1f) << 5) | (data[ 7] >> 2); | |
105 | axes[4] = ((data[7] & 0x03) << 8) | (data[ 8] << 1) | (data[7] >> 6); | |
106 | axes[5] = ((data[9] & 0x3f) << 4) | (data[10] >> 3); | |
107 | for (i = 0; i < 6; i++) | |
108 | input_report_abs(dev, spaceorb_axes[i], axes[i] - ((axes[i] & 0x200) ? 1024 : 0)); | |
109 | for (i = 0; i < 6; i++) | |
110 | input_report_key(dev, spaceorb_buttons[i], (data[1] >> i) & 1); | |
111 | break; | |
112 | ||
113 | case 'K': /* Button data */ | |
114 | if (spaceorb->idx != 5) return; | |
6c207e76 | 115 | for (i = 0; i < 6; i++) |
1da177e4 LT |
116 | input_report_key(dev, spaceorb_buttons[i], (data[2] >> i) & 1); |
117 | ||
118 | break; | |
119 | ||
120 | case 'E': /* Error packet */ | |
121 | if (spaceorb->idx != 4) return; | |
17dd3f0f | 122 | printk(KERN_ERR "spaceorb: Device error. [ "); |
1da177e4 LT |
123 | for (i = 0; i < 7; i++) if (data[1] & (1 << i)) printk("%s ", spaceorb_errors[i]); |
124 | printk("]\n"); | |
125 | break; | |
126 | } | |
127 | ||
128 | input_sync(dev); | |
129 | } | |
130 | ||
131 | static irqreturn_t spaceorb_interrupt(struct serio *serio, | |
7d12e780 | 132 | unsigned char data, unsigned int flags) |
1da177e4 LT |
133 | { |
134 | struct spaceorb* spaceorb = serio_get_drvdata(serio); | |
135 | ||
136 | if (~data & 0x80) { | |
7d12e780 | 137 | if (spaceorb->idx) spaceorb_process_packet(spaceorb); |
1da177e4 LT |
138 | spaceorb->idx = 0; |
139 | } | |
140 | if (spaceorb->idx < SPACEORB_MAX_LENGTH) | |
141 | spaceorb->data[spaceorb->idx++] = data & 0x7f; | |
142 | return IRQ_HANDLED; | |
143 | } | |
144 | ||
145 | /* | |
146 | * spaceorb_disconnect() is the opposite of spaceorb_connect() | |
147 | */ | |
148 | ||
149 | static void spaceorb_disconnect(struct serio *serio) | |
150 | { | |
151 | struct spaceorb* spaceorb = serio_get_drvdata(serio); | |
152 | ||
1da177e4 LT |
153 | serio_close(serio); |
154 | serio_set_drvdata(serio, NULL); | |
17dd3f0f | 155 | input_unregister_device(spaceorb->dev); |
1da177e4 LT |
156 | kfree(spaceorb); |
157 | } | |
158 | ||
159 | /* | |
160 | * spaceorb_connect() is the routine that is called when someone adds a | |
161 | * new serio device that supports SpaceOrb/Avenger protocol and registers | |
162 | * it as an input device. | |
163 | */ | |
164 | ||
165 | static int spaceorb_connect(struct serio *serio, struct serio_driver *drv) | |
166 | { | |
167 | struct spaceorb *spaceorb; | |
17dd3f0f DT |
168 | struct input_dev *input_dev; |
169 | int err = -ENOMEM; | |
170 | int i; | |
1da177e4 | 171 | |
17dd3f0f DT |
172 | spaceorb = kzalloc(sizeof(struct spaceorb), GFP_KERNEL); |
173 | input_dev = input_allocate_device(); | |
174 | if (!spaceorb || !input_dev) | |
175 | goto fail; | |
1da177e4 | 176 | |
17dd3f0f | 177 | spaceorb->dev = input_dev; |
10ca4c0a | 178 | snprintf(spaceorb->phys, sizeof(spaceorb->phys), "%s/input0", serio->phys); |
1da177e4 | 179 | |
17dd3f0f DT |
180 | input_dev->name = "SpaceTec SpaceOrb 360 / Avenger"; |
181 | input_dev->phys = spaceorb->phys; | |
182 | input_dev->id.bustype = BUS_RS232; | |
183 | input_dev->id.vendor = SERIO_SPACEORB; | |
184 | input_dev->id.product = 0x0001; | |
185 | input_dev->id.version = 0x0100; | |
186 | input_dev->cdev.dev = &serio->dev; | |
187 | input_dev->private = spaceorb; | |
1da177e4 | 188 | |
17dd3f0f | 189 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); |
1da177e4 | 190 | |
17dd3f0f DT |
191 | for (i = 0; i < 6; i++) |
192 | set_bit(spaceorb_buttons[i], input_dev->keybit); | |
1da177e4 | 193 | |
17dd3f0f DT |
194 | for (i = 0; i < 6; i++) |
195 | input_set_abs_params(input_dev, spaceorb_axes[i], -508, 508, 0, 0); | |
1da177e4 LT |
196 | |
197 | serio_set_drvdata(serio, spaceorb); | |
198 | ||
199 | err = serio_open(serio, drv); | |
17dd3f0f DT |
200 | if (err) |
201 | goto fail; | |
1da177e4 | 202 | |
17dd3f0f | 203 | input_register_device(spaceorb->dev); |
1da177e4 | 204 | return 0; |
17dd3f0f DT |
205 | |
206 | fail: serio_set_drvdata(serio, NULL); | |
207 | input_free_device(input_dev); | |
208 | kfree(spaceorb); | |
209 | return err; | |
1da177e4 LT |
210 | } |
211 | ||
212 | /* | |
213 | * The serio driver structure. | |
214 | */ | |
215 | ||
216 | static struct serio_device_id spaceorb_serio_ids[] = { | |
217 | { | |
218 | .type = SERIO_RS232, | |
219 | .proto = SERIO_SPACEORB, | |
220 | .id = SERIO_ANY, | |
221 | .extra = SERIO_ANY, | |
222 | }, | |
223 | { 0 } | |
224 | }; | |
225 | ||
226 | MODULE_DEVICE_TABLE(serio, spaceorb_serio_ids); | |
227 | ||
228 | static struct serio_driver spaceorb_drv = { | |
229 | .driver = { | |
230 | .name = "spaceorb", | |
231 | }, | |
232 | .description = DRIVER_DESC, | |
233 | .id_table = spaceorb_serio_ids, | |
234 | .interrupt = spaceorb_interrupt, | |
235 | .connect = spaceorb_connect, | |
236 | .disconnect = spaceorb_disconnect, | |
237 | }; | |
238 | ||
239 | /* | |
240 | * The functions for inserting/removing us as a module. | |
241 | */ | |
242 | ||
243 | static int __init spaceorb_init(void) | |
244 | { | |
245 | serio_register_driver(&spaceorb_drv); | |
246 | return 0; | |
247 | } | |
248 | ||
249 | static void __exit spaceorb_exit(void) | |
250 | { | |
251 | serio_unregister_driver(&spaceorb_drv); | |
252 | } | |
253 | ||
254 | module_init(spaceorb_init); | |
255 | module_exit(spaceorb_exit); |