2 * Copyright (c) 1999-2001 Vojtech Pavlik
4 * Based on the work of:
9 * SpaceTec SpaceOrb 360 and Avenger 6dof controller driver for Linux
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 * Should you need to contact me, the author, you can do so either by
28 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
29 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
32 #include <linux/kernel.h>
33 #include <linux/slab.h>
34 #include <linux/module.h>
35 #include <linux/input.h>
36 #include <linux/serio.h>
38 #define DRIVER_DESC "SpaceTec SpaceOrb 360 and Avenger 6dof controller driver"
40 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
41 MODULE_DESCRIPTION(DRIVER_DESC);
42 MODULE_LICENSE("GPL");
48 #define SPACEORB_MAX_LENGTH 64
50 static int spaceorb_buttons[] = { BTN_TL, BTN_TR, BTN_Y, BTN_X, BTN_B, BTN_A };
51 static int spaceorb_axes[] = { ABS_X, ABS_Y, ABS_Z, ABS_RX, ABS_RY, ABS_RZ };
58 struct input_dev *dev;
60 unsigned char data[SPACEORB_MAX_LENGTH];
64 static unsigned char spaceorb_xor[] = "SpaceWare";
66 static unsigned char *spaceorb_errors[] = { "EEPROM storing 0 failed", "Receive queue overflow", "Transmit queue timeout",
67 "Bad packet", "Power brown-out", "EEPROM checksum error", "Hardware fault" };
70 * spaceorb_process_packet() decodes packets the driver receives from the
74 static void spaceorb_process_packet(struct spaceorb *spaceorb)
76 struct input_dev *dev = spaceorb->dev;
77 unsigned char *data = spaceorb->data;
82 if (spaceorb->idx < 2) return;
83 for (i = 0; i < spaceorb->idx; i++) c ^= data[i];
88 case 'R': /* Reset packet */
89 spaceorb->data[spaceorb->idx - 1] = 0;
90 for (i = 1; i < spaceorb->idx && spaceorb->data[i] == ' '; i++);
91 printk(KERN_INFO "input: %s [%s] is %s\n",
92 dev->name, spaceorb->data + i, spaceorb->phys);
95 case 'D': /* Ball + button data */
96 if (spaceorb->idx != 12) return;
97 for (i = 0; i < 9; i++) spaceorb->data[i+2] ^= spaceorb_xor[i];
98 axes[0] = ( data[2] << 3) | (data[ 3] >> 4);
99 axes[1] = ((data[3] & 0x0f) << 6) | (data[ 4] >> 1);
100 axes[2] = ((data[4] & 0x01) << 9) | (data[ 5] << 2) | (data[4] >> 5);
101 axes[3] = ((data[6] & 0x1f) << 5) | (data[ 7] >> 2);
102 axes[4] = ((data[7] & 0x03) << 8) | (data[ 8] << 1) | (data[7] >> 6);
103 axes[5] = ((data[9] & 0x3f) << 4) | (data[10] >> 3);
104 for (i = 0; i < 6; i++)
105 input_report_abs(dev, spaceorb_axes[i], axes[i] - ((axes[i] & 0x200) ? 1024 : 0));
106 for (i = 0; i < 6; i++)
107 input_report_key(dev, spaceorb_buttons[i], (data[1] >> i) & 1);
110 case 'K': /* Button data */
111 if (spaceorb->idx != 5) return;
112 for (i = 0; i < 6; i++)
113 input_report_key(dev, spaceorb_buttons[i], (data[2] >> i) & 1);
117 case 'E': /* Error packet */
118 if (spaceorb->idx != 4) return;
119 printk(KERN_ERR "spaceorb: Device error. [ ");
120 for (i = 0; i < 7; i++) if (data[1] & (1 << i)) printk("%s ", spaceorb_errors[i]);
128 static irqreturn_t spaceorb_interrupt(struct serio *serio,
129 unsigned char data, unsigned int flags)
131 struct spaceorb* spaceorb = serio_get_drvdata(serio);
134 if (spaceorb->idx) spaceorb_process_packet(spaceorb);
137 if (spaceorb->idx < SPACEORB_MAX_LENGTH)
138 spaceorb->data[spaceorb->idx++] = data & 0x7f;
143 * spaceorb_disconnect() is the opposite of spaceorb_connect()
146 static void spaceorb_disconnect(struct serio *serio)
148 struct spaceorb* spaceorb = serio_get_drvdata(serio);
151 serio_set_drvdata(serio, NULL);
152 input_unregister_device(spaceorb->dev);
157 * spaceorb_connect() is the routine that is called when someone adds a
158 * new serio device that supports SpaceOrb/Avenger protocol and registers
159 * it as an input device.
162 static int spaceorb_connect(struct serio *serio, struct serio_driver *drv)
164 struct spaceorb *spaceorb;
165 struct input_dev *input_dev;
169 spaceorb = kzalloc(sizeof(struct spaceorb), GFP_KERNEL);
170 input_dev = input_allocate_device();
171 if (!spaceorb || !input_dev)
174 spaceorb->dev = input_dev;
175 snprintf(spaceorb->phys, sizeof(spaceorb->phys), "%s/input0", serio->phys);
177 input_dev->name = "SpaceTec SpaceOrb 360 / Avenger";
178 input_dev->phys = spaceorb->phys;
179 input_dev->id.bustype = BUS_RS232;
180 input_dev->id.vendor = SERIO_SPACEORB;
181 input_dev->id.product = 0x0001;
182 input_dev->id.version = 0x0100;
183 input_dev->dev.parent = &serio->dev;
185 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
187 for (i = 0; i < 6; i++)
188 set_bit(spaceorb_buttons[i], input_dev->keybit);
190 for (i = 0; i < 6; i++)
191 input_set_abs_params(input_dev, spaceorb_axes[i], -508, 508, 0, 0);
193 serio_set_drvdata(serio, spaceorb);
195 err = serio_open(serio, drv);
199 err = input_register_device(spaceorb->dev);
205 fail3: serio_close(serio);
206 fail2: serio_set_drvdata(serio, NULL);
207 fail1: input_free_device(input_dev);
213 * The serio driver structure.
216 static const struct serio_device_id spaceorb_serio_ids[] = {
219 .proto = SERIO_SPACEORB,
226 MODULE_DEVICE_TABLE(serio, spaceorb_serio_ids);
228 static struct serio_driver spaceorb_drv = {
232 .description = DRIVER_DESC,
233 .id_table = spaceorb_serio_ids,
234 .interrupt = spaceorb_interrupt,
235 .connect = spaceorb_connect,
236 .disconnect = spaceorb_disconnect,
239 module_serio_driver(spaceorb_drv);