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: 7 * David Thompson 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 }; 55 56 /* 57 * Per-Orb data. 58 */ 59 60 struct spaceorb { 61 struct input_dev *dev; 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 77 static void spaceorb_process_packet(struct spaceorb *spaceorb, struct pt_regs *regs) 78 { 79 struct input_dev *dev = spaceorb->dev; 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 89 input_regs(dev, regs); 90 91 switch (data[0]) { 92 93 case 'R': /* Reset packet */ 94 spaceorb->data[spaceorb->idx - 1] = 0; 95 for (i = 1; i < spaceorb->idx && spaceorb->data[i] == ' '; i++); 96 printk(KERN_INFO "input: %s [%s] is %s\n", 97 dev->name, spaceorb->data + i, spaceorb->phys); 98 break; 99 100 case 'D': /* Ball + button data */ 101 if (spaceorb->idx != 12) return; 102 for (i = 0; i < 9; i++) spaceorb->data[i+2] ^= spaceorb_xor[i]; 103 axes[0] = ( data[2] << 3) | (data[ 3] >> 4); 104 axes[1] = ((data[3] & 0x0f) << 6) | (data[ 4] >> 1); 105 axes[2] = ((data[4] & 0x01) << 9) | (data[ 5] << 2) | (data[4] >> 5); 106 axes[3] = ((data[6] & 0x1f) << 5) | (data[ 7] >> 2); 107 axes[4] = ((data[7] & 0x03) << 8) | (data[ 8] << 1) | (data[7] >> 6); 108 axes[5] = ((data[9] & 0x3f) << 4) | (data[10] >> 3); 109 for (i = 0; i < 6; i++) 110 input_report_abs(dev, spaceorb_axes[i], axes[i] - ((axes[i] & 0x200) ? 1024 : 0)); 111 for (i = 0; i < 6; i++) 112 input_report_key(dev, spaceorb_buttons[i], (data[1] >> i) & 1); 113 break; 114 115 case 'K': /* Button data */ 116 if (spaceorb->idx != 5) return; 117 for (i = 0; i < 6; i++) 118 input_report_key(dev, spaceorb_buttons[i], (data[2] >> i) & 1); 119 120 break; 121 122 case 'E': /* Error packet */ 123 if (spaceorb->idx != 4) return; 124 printk(KERN_ERR "spaceorb: Device error. [ "); 125 for (i = 0; i < 7; i++) if (data[1] & (1 << i)) printk("%s ", spaceorb_errors[i]); 126 printk("]\n"); 127 break; 128 } 129 130 input_sync(dev); 131 } 132 133 static irqreturn_t spaceorb_interrupt(struct serio *serio, 134 unsigned char data, unsigned int flags, struct pt_regs *regs) 135 { 136 struct spaceorb* spaceorb = serio_get_drvdata(serio); 137 138 if (~data & 0x80) { 139 if (spaceorb->idx) spaceorb_process_packet(spaceorb, regs); 140 spaceorb->idx = 0; 141 } 142 if (spaceorb->idx < SPACEORB_MAX_LENGTH) 143 spaceorb->data[spaceorb->idx++] = data & 0x7f; 144 return IRQ_HANDLED; 145 } 146 147 /* 148 * spaceorb_disconnect() is the opposite of spaceorb_connect() 149 */ 150 151 static void spaceorb_disconnect(struct serio *serio) 152 { 153 struct spaceorb* spaceorb = serio_get_drvdata(serio); 154 155 serio_close(serio); 156 serio_set_drvdata(serio, NULL); 157 input_unregister_device(spaceorb->dev); 158 kfree(spaceorb); 159 } 160 161 /* 162 * spaceorb_connect() is the routine that is called when someone adds a 163 * new serio device that supports SpaceOrb/Avenger protocol and registers 164 * it as an input device. 165 */ 166 167 static int spaceorb_connect(struct serio *serio, struct serio_driver *drv) 168 { 169 struct spaceorb *spaceorb; 170 struct input_dev *input_dev; 171 int err = -ENOMEM; 172 int i; 173 174 spaceorb = kzalloc(sizeof(struct spaceorb), GFP_KERNEL); 175 input_dev = input_allocate_device(); 176 if (!spaceorb || !input_dev) 177 goto fail; 178 179 spaceorb->dev = input_dev; 180 sprintf(spaceorb->phys, "%s/input0", serio->phys); 181 182 input_dev->name = "SpaceTec SpaceOrb 360 / Avenger"; 183 input_dev->phys = spaceorb->phys; 184 input_dev->id.bustype = BUS_RS232; 185 input_dev->id.vendor = SERIO_SPACEORB; 186 input_dev->id.product = 0x0001; 187 input_dev->id.version = 0x0100; 188 input_dev->cdev.dev = &serio->dev; 189 input_dev->private = spaceorb; 190 191 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); 192 193 for (i = 0; i < 6; i++) 194 set_bit(spaceorb_buttons[i], input_dev->keybit); 195 196 for (i = 0; i < 6; i++) 197 input_set_abs_params(input_dev, spaceorb_axes[i], -508, 508, 0, 0); 198 199 serio_set_drvdata(serio, spaceorb); 200 201 err = serio_open(serio, drv); 202 if (err) 203 goto fail; 204 205 input_register_device(spaceorb->dev); 206 return 0; 207 208 fail: serio_set_drvdata(serio, NULL); 209 input_free_device(input_dev); 210 kfree(spaceorb); 211 return err; 212 } 213 214 /* 215 * The serio driver structure. 216 */ 217 218 static struct serio_device_id spaceorb_serio_ids[] = { 219 { 220 .type = SERIO_RS232, 221 .proto = SERIO_SPACEORB, 222 .id = SERIO_ANY, 223 .extra = SERIO_ANY, 224 }, 225 { 0 } 226 }; 227 228 MODULE_DEVICE_TABLE(serio, spaceorb_serio_ids); 229 230 static struct serio_driver spaceorb_drv = { 231 .driver = { 232 .name = "spaceorb", 233 }, 234 .description = DRIVER_DESC, 235 .id_table = spaceorb_serio_ids, 236 .interrupt = spaceorb_interrupt, 237 .connect = spaceorb_connect, 238 .disconnect = spaceorb_disconnect, 239 }; 240 241 /* 242 * The functions for inserting/removing us as a module. 243 */ 244 245 static int __init spaceorb_init(void) 246 { 247 serio_register_driver(&spaceorb_drv); 248 return 0; 249 } 250 251 static void __exit spaceorb_exit(void) 252 { 253 serio_unregister_driver(&spaceorb_drv); 254 } 255 256 module_init(spaceorb_init); 257 module_exit(spaceorb_exit); 258