1 /* 2 * Copyright (c) 2001 Vojtech Pavlik 3 * 4 * Based on the work of: 5 * Toby Deshane 6 */ 7 8 /* 9 * InterAct digital gamepad/joystick driver for Linux 10 */ 11 12 /* 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. 17 * 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. 22 * 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 26 * 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 30 */ 31 32 #include <linux/kernel.h> 33 #include <linux/slab.h> 34 #include <linux/module.h> 35 #include <linux/delay.h> 36 #include <linux/gameport.h> 37 #include <linux/input.h> 38 #include <linux/jiffies.h> 39 40 #define DRIVER_DESC "InterAct digital joystick driver" 41 42 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 43 MODULE_DESCRIPTION(DRIVER_DESC); 44 MODULE_LICENSE("GPL"); 45 46 #define INTERACT_MAX_START 600 /* 400 us */ 47 #define INTERACT_MAX_STROBE 60 /* 40 us */ 48 #define INTERACT_MAX_LENGTH 32 /* 32 bits */ 49 50 #define INTERACT_TYPE_HHFX 0 /* HammerHead/FX */ 51 #define INTERACT_TYPE_PP8D 1 /* ProPad 8 */ 52 53 struct interact { 54 struct gameport *gameport; 55 struct input_dev *dev; 56 int bads; 57 int reads; 58 unsigned char type; 59 unsigned char length; 60 char phys[32]; 61 }; 62 63 static short interact_abs_hhfx[] = 64 { ABS_RX, ABS_RY, ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y, -1 }; 65 static short interact_abs_pp8d[] = 66 { ABS_X, ABS_Y, -1 }; 67 68 static short interact_btn_hhfx[] = 69 { BTN_TR, BTN_X, BTN_Y, BTN_Z, BTN_A, BTN_B, BTN_C, BTN_TL, BTN_TL2, BTN_TR2, BTN_MODE, BTN_SELECT, -1 }; 70 static short interact_btn_pp8d[] = 71 { BTN_C, BTN_TL, BTN_TR, BTN_A, BTN_B, BTN_Y, BTN_Z, BTN_X, -1 }; 72 73 struct interact_type { 74 int id; 75 short *abs; 76 short *btn; 77 char *name; 78 unsigned char length; 79 unsigned char b8; 80 }; 81 82 static struct interact_type interact_type[] = { 83 { 0x6202, interact_abs_hhfx, interact_btn_hhfx, "InterAct HammerHead/FX", 32, 4 }, 84 { 0x53f8, interact_abs_pp8d, interact_btn_pp8d, "InterAct ProPad 8 Digital", 16, 0 }, 85 { 0 }}; 86 87 /* 88 * interact_read_packet() reads and InterAct joystick data. 89 */ 90 91 static int interact_read_packet(struct gameport *gameport, int length, u32 *data) 92 { 93 unsigned long flags; 94 unsigned char u, v; 95 unsigned int t, s; 96 int i; 97 98 i = 0; 99 data[0] = data[1] = data[2] = 0; 100 t = gameport_time(gameport, INTERACT_MAX_START); 101 s = gameport_time(gameport, INTERACT_MAX_STROBE); 102 103 local_irq_save(flags); 104 gameport_trigger(gameport); 105 v = gameport_read(gameport); 106 107 while (t > 0 && i < length) { 108 t--; 109 u = v; v = gameport_read(gameport); 110 if (v & ~u & 0x40) { 111 data[0] = (data[0] << 1) | ((v >> 4) & 1); 112 data[1] = (data[1] << 1) | ((v >> 5) & 1); 113 data[2] = (data[2] << 1) | ((v >> 7) & 1); 114 i++; 115 t = s; 116 } 117 } 118 119 local_irq_restore(flags); 120 121 return i; 122 } 123 124 /* 125 * interact_poll() reads and analyzes InterAct joystick data. 126 */ 127 128 static void interact_poll(struct gameport *gameport) 129 { 130 struct interact *interact = gameport_get_drvdata(gameport); 131 struct input_dev *dev = interact->dev; 132 u32 data[3]; 133 int i; 134 135 interact->reads++; 136 137 if (interact_read_packet(interact->gameport, interact->length, data) < interact->length) { 138 interact->bads++; 139 } else { 140 141 for (i = 0; i < 3; i++) 142 data[i] <<= INTERACT_MAX_LENGTH - interact->length; 143 144 switch (interact->type) { 145 146 case INTERACT_TYPE_HHFX: 147 148 for (i = 0; i < 4; i++) 149 input_report_abs(dev, interact_abs_hhfx[i], (data[i & 1] >> ((i >> 1) << 3)) & 0xff); 150 151 for (i = 0; i < 2; i++) 152 input_report_abs(dev, ABS_HAT0Y - i, 153 ((data[1] >> ((i << 1) + 17)) & 1) - ((data[1] >> ((i << 1) + 16)) & 1)); 154 155 for (i = 0; i < 8; i++) 156 input_report_key(dev, interact_btn_hhfx[i], (data[0] >> (i + 16)) & 1); 157 158 for (i = 0; i < 4; i++) 159 input_report_key(dev, interact_btn_hhfx[i + 8], (data[1] >> (i + 20)) & 1); 160 161 break; 162 163 case INTERACT_TYPE_PP8D: 164 165 for (i = 0; i < 2; i++) 166 input_report_abs(dev, interact_abs_pp8d[i], 167 ((data[0] >> ((i << 1) + 20)) & 1) - ((data[0] >> ((i << 1) + 21)) & 1)); 168 169 for (i = 0; i < 8; i++) 170 input_report_key(dev, interact_btn_pp8d[i], (data[1] >> (i + 16)) & 1); 171 172 break; 173 } 174 } 175 176 input_sync(dev); 177 } 178 179 /* 180 * interact_open() is a callback from the input open routine. 181 */ 182 183 static int interact_open(struct input_dev *dev) 184 { 185 struct interact *interact = input_get_drvdata(dev); 186 187 gameport_start_polling(interact->gameport); 188 return 0; 189 } 190 191 /* 192 * interact_close() is a callback from the input close routine. 193 */ 194 195 static void interact_close(struct input_dev *dev) 196 { 197 struct interact *interact = input_get_drvdata(dev); 198 199 gameport_stop_polling(interact->gameport); 200 } 201 202 /* 203 * interact_connect() probes for InterAct joysticks. 204 */ 205 206 static int interact_connect(struct gameport *gameport, struct gameport_driver *drv) 207 { 208 struct interact *interact; 209 struct input_dev *input_dev; 210 __u32 data[3]; 211 int i, t; 212 int err; 213 214 interact = kzalloc(sizeof(struct interact), GFP_KERNEL); 215 input_dev = input_allocate_device(); 216 if (!interact || !input_dev) { 217 err = -ENOMEM; 218 goto fail1; 219 } 220 221 interact->gameport = gameport; 222 interact->dev = input_dev; 223 224 gameport_set_drvdata(gameport, interact); 225 226 err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW); 227 if (err) 228 goto fail1; 229 230 i = interact_read_packet(gameport, INTERACT_MAX_LENGTH * 2, data); 231 232 if (i != 32 || (data[0] >> 24) != 0x0c || (data[1] >> 24) != 0x02) { 233 err = -ENODEV; 234 goto fail2; 235 } 236 237 for (i = 0; interact_type[i].length; i++) 238 if (interact_type[i].id == (data[2] >> 16)) 239 break; 240 241 if (!interact_type[i].length) { 242 printk(KERN_WARNING "interact.c: Unknown joystick on %s. [len %d d0 %08x d1 %08x i2 %08x]\n", 243 gameport->phys, i, data[0], data[1], data[2]); 244 err = -ENODEV; 245 goto fail2; 246 } 247 248 gameport_set_poll_handler(gameport, interact_poll); 249 gameport_set_poll_interval(gameport, 20); 250 251 snprintf(interact->phys, sizeof(interact->phys), "%s/input0", gameport->phys); 252 253 interact->type = i; 254 interact->length = interact_type[i].length; 255 256 input_dev->name = interact_type[i].name; 257 input_dev->phys = interact->phys; 258 input_dev->id.bustype = BUS_GAMEPORT; 259 input_dev->id.vendor = GAMEPORT_ID_VENDOR_INTERACT; 260 input_dev->id.product = interact_type[i].id; 261 input_dev->id.version = 0x0100; 262 input_dev->dev.parent = &gameport->dev; 263 264 input_set_drvdata(input_dev, interact); 265 266 input_dev->open = interact_open; 267 input_dev->close = interact_close; 268 269 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 270 271 for (i = 0; (t = interact_type[interact->type].abs[i]) >= 0; i++) { 272 if (i < interact_type[interact->type].b8) 273 input_set_abs_params(input_dev, t, 0, 255, 0, 0); 274 else 275 input_set_abs_params(input_dev, t, -1, 1, 0, 0); 276 } 277 278 for (i = 0; (t = interact_type[interact->type].btn[i]) >= 0; i++) 279 __set_bit(t, input_dev->keybit); 280 281 err = input_register_device(interact->dev); 282 if (err) 283 goto fail2; 284 285 return 0; 286 287 fail2: gameport_close(gameport); 288 fail1: gameport_set_drvdata(gameport, NULL); 289 input_free_device(input_dev); 290 kfree(interact); 291 return err; 292 } 293 294 static void interact_disconnect(struct gameport *gameport) 295 { 296 struct interact *interact = gameport_get_drvdata(gameport); 297 298 input_unregister_device(interact->dev); 299 gameport_close(gameport); 300 gameport_set_drvdata(gameport, NULL); 301 kfree(interact); 302 } 303 304 static struct gameport_driver interact_drv = { 305 .driver = { 306 .name = "interact", 307 }, 308 .description = DRIVER_DESC, 309 .connect = interact_connect, 310 .disconnect = interact_disconnect, 311 }; 312 313 module_gameport_driver(interact_drv); 314