2 * $Id: spaceball.c,v 1.17 2002/01/22 20:29:03 vojtech Exp $
4 * Copyright (c) 1999-2001 Vojtech Pavlik
6 * Based on the work of:
12 * SpaceTec SpaceBall 2003/3003/4000 FLX driver for Linux
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 * Should you need to contact me, the author, you can do so either by
31 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
32 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
35 #include <linux/kernel.h>
36 #include <linux/slab.h>
37 #include <linux/module.h>
38 #include <linux/init.h>
39 #include <linux/input.h>
40 #include <linux/serio.h>
42 #define DRIVER_DESC "SpaceTec SpaceBall 2003/3003/4000 FLX driver"
44 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
45 MODULE_DESCRIPTION(DRIVER_DESC);
46 MODULE_LICENSE("GPL");
52 #define SPACEBALL_MAX_LENGTH 128
53 #define SPACEBALL_MAX_ID 9
55 #define SPACEBALL_1003 1
56 #define SPACEBALL_2003B 3
57 #define SPACEBALL_2003C 4
58 #define SPACEBALL_3003C 7
59 #define SPACEBALL_4000FLX 8
60 #define SPACEBALL_4000FLX_L 9
62 static int spaceball_axes[] = { ABS_X, ABS_Z, ABS_Y, ABS_RX, ABS_RZ, ABS_RY };
63 static char *spaceball_names[] = {
64 "?", "SpaceTec SpaceBall 1003", "SpaceTec SpaceBall 2003", "SpaceTec SpaceBall 2003B",
65 "SpaceTec SpaceBall 2003C", "SpaceTec SpaceBall 3003", "SpaceTec SpaceBall SpaceController",
66 "SpaceTec SpaceBall 3003C", "SpaceTec SpaceBall 4000FLX", "SpaceTec SpaceBall 4000FLX Lefty" };
73 struct input_dev *dev;
76 unsigned char data[SPACEBALL_MAX_LENGTH];
81 * spaceball_process_packet() decodes packets the driver receives from the
85 static void spaceball_process_packet(struct spaceball* spaceball)
87 struct input_dev *dev = spaceball->dev;
88 unsigned char *data = spaceball->data;
91 if (spaceball->idx < 2) return;
93 switch (spaceball->data[0]) {
95 case 'D': /* Ball data */
96 if (spaceball->idx != 15) return;
97 for (i = 0; i < 6; i++)
98 input_report_abs(dev, spaceball_axes[i],
99 (__s16)((data[2 * i + 3] << 8) | data[2 * i + 2]));
102 case 'K': /* Button data */
103 if (spaceball->idx != 3) return;
104 input_report_key(dev, BTN_1, (data[2] & 0x01) || (data[2] & 0x20));
105 input_report_key(dev, BTN_2, data[2] & 0x02);
106 input_report_key(dev, BTN_3, data[2] & 0x04);
107 input_report_key(dev, BTN_4, data[2] & 0x08);
108 input_report_key(dev, BTN_5, data[1] & 0x01);
109 input_report_key(dev, BTN_6, data[1] & 0x02);
110 input_report_key(dev, BTN_7, data[1] & 0x04);
111 input_report_key(dev, BTN_8, data[1] & 0x10);
114 case '.': /* Advanced button data */
115 if (spaceball->idx != 3) return;
116 input_report_key(dev, BTN_1, data[2] & 0x01);
117 input_report_key(dev, BTN_2, data[2] & 0x02);
118 input_report_key(dev, BTN_3, data[2] & 0x04);
119 input_report_key(dev, BTN_4, data[2] & 0x08);
120 input_report_key(dev, BTN_5, data[2] & 0x10);
121 input_report_key(dev, BTN_6, data[2] & 0x20);
122 input_report_key(dev, BTN_7, data[2] & 0x80);
123 input_report_key(dev, BTN_8, data[1] & 0x01);
124 input_report_key(dev, BTN_9, data[1] & 0x02);
125 input_report_key(dev, BTN_A, data[1] & 0x04);
126 input_report_key(dev, BTN_B, data[1] & 0x08);
127 input_report_key(dev, BTN_C, data[1] & 0x10);
128 input_report_key(dev, BTN_MODE, data[1] & 0x20);
131 case 'E': /* Device error */
132 spaceball->data[spaceball->idx - 1] = 0;
133 printk(KERN_ERR "spaceball: Device error. [%s]\n", spaceball->data + 1);
136 case '?': /* Bad command packet */
137 spaceball->data[spaceball->idx - 1] = 0;
138 printk(KERN_ERR "spaceball: Bad command. [%s]\n", spaceball->data + 1);
146 * Spaceball 4000 FLX packets all start with a one letter packet-type decriptor,
147 * and end in 0x0d. It uses '^' as an escape for CR, XOFF and XON characters which
148 * can occur in the axis values.
151 static irqreturn_t spaceball_interrupt(struct serio *serio,
152 unsigned char data, unsigned int flags)
154 struct spaceball *spaceball = serio_get_drvdata(serio);
158 spaceball_process_packet(spaceball);
160 spaceball->escape = 0;
163 if (!spaceball->escape) {
164 spaceball->escape = 1;
167 spaceball->escape = 0;
171 if (spaceball->escape) {
172 spaceball->escape = 0;
176 if (spaceball->escape)
177 spaceball->escape = 0;
178 if (spaceball->idx < SPACEBALL_MAX_LENGTH)
179 spaceball->data[spaceball->idx++] = data;
186 * spaceball_disconnect() is the opposite of spaceball_connect()
189 static void spaceball_disconnect(struct serio *serio)
191 struct spaceball* spaceball = serio_get_drvdata(serio);
194 serio_set_drvdata(serio, NULL);
195 input_unregister_device(spaceball->dev);
200 * spaceball_connect() is the routine that is called when someone adds a
201 * new serio device that supports Spaceball protocol and registers it as
205 static int spaceball_connect(struct serio *serio, struct serio_driver *drv)
207 struct spaceball *spaceball;
208 struct input_dev *input_dev;
212 if ((id = serio->id.id) > SPACEBALL_MAX_ID)
215 spaceball = kmalloc(sizeof(struct spaceball), GFP_KERNEL);
216 input_dev = input_allocate_device();
217 if (!spaceball || !input_dev)
220 spaceball->dev = input_dev;
221 snprintf(spaceball->phys, sizeof(spaceball->phys), "%s/input0", serio->phys);
223 input_dev->name = spaceball_names[id];
224 input_dev->phys = spaceball->phys;
225 input_dev->id.bustype = BUS_RS232;
226 input_dev->id.vendor = SERIO_SPACEBALL;
227 input_dev->id.product = id;
228 input_dev->id.version = 0x0100;
229 input_dev->dev.parent = &serio->dev;
231 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
234 case SPACEBALL_4000FLX:
235 case SPACEBALL_4000FLX_L:
236 input_dev->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_9);
237 input_dev->keybit[BIT_WORD(BTN_A)] |= BIT_MASK(BTN_A) |
238 BIT_MASK(BTN_B) | BIT_MASK(BTN_C) |
241 input_dev->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_2) |
242 BIT_MASK(BTN_3) | BIT_MASK(BTN_4) |
243 BIT_MASK(BTN_5) | BIT_MASK(BTN_6) |
244 BIT_MASK(BTN_7) | BIT_MASK(BTN_8);
245 case SPACEBALL_3003C:
246 input_dev->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_1) |
250 for (i = 0; i < 3; i++) {
251 input_set_abs_params(input_dev, ABS_X + i, -8000, 8000, 8, 40);
252 input_set_abs_params(input_dev, ABS_RX + i, -1600, 1600, 2, 8);
255 serio_set_drvdata(serio, spaceball);
257 err = serio_open(serio, drv);
261 err = input_register_device(spaceball->dev);
267 fail3: serio_close(serio);
268 fail2: serio_set_drvdata(serio, NULL);
269 fail1: input_free_device(input_dev);
275 * The serio driver structure.
278 static struct serio_device_id spaceball_serio_ids[] = {
281 .proto = SERIO_SPACEBALL,
288 MODULE_DEVICE_TABLE(serio, spaceball_serio_ids);
290 static struct serio_driver spaceball_drv = {
294 .description = DRIVER_DESC,
295 .id_table = spaceball_serio_ids,
296 .interrupt = spaceball_interrupt,
297 .connect = spaceball_connect,
298 .disconnect = spaceball_disconnect,
302 * The functions for inserting/removing us as a module.
305 static int __init spaceball_init(void)
307 return serio_register_driver(&spaceball_drv);
310 static void __exit spaceball_exit(void)
312 serio_unregister_driver(&spaceball_drv);
315 module_init(spaceball_init);
316 module_exit(spaceball_exit);