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 28 #include <linux/kernel.h> 29 #include <linux/slab.h> 30 #include <linux/module.h> 31 #include <linux/delay.h> 32 #include <linux/gameport.h> 33 #include <linux/input.h> 34 #include <linux/jiffies.h> 35 36 #define DRIVER_DESC "InterAct digital joystick driver" 37 38 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 39 MODULE_DESCRIPTION(DRIVER_DESC); 40 MODULE_LICENSE("GPL"); 41 42 #define INTERACT_MAX_START 600 /* 400 us */ 43 #define INTERACT_MAX_STROBE 60 /* 40 us */ 44 #define INTERACT_MAX_LENGTH 32 /* 32 bits */ 45 46 #define INTERACT_TYPE_HHFX 0 /* HammerHead/FX */ 47 #define INTERACT_TYPE_PP8D 1 /* ProPad 8 */ 48 49 struct interact { 50 struct gameport *gameport; 51 struct input_dev *dev; 52 int bads; 53 int reads; 54 unsigned char type; 55 unsigned char length; 56 char phys[32]; 57 }; 58 59 static short interact_abs_hhfx[] = 60 { ABS_RX, ABS_RY, ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y, -1 }; 61 static short interact_abs_pp8d[] = 62 { ABS_X, ABS_Y, -1 }; 63 64 static short interact_btn_hhfx[] = 65 { 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 }; 66 static short interact_btn_pp8d[] = 67 { BTN_C, BTN_TL, BTN_TR, BTN_A, BTN_B, BTN_Y, BTN_Z, BTN_X, -1 }; 68 69 struct interact_type { 70 int id; 71 short *abs; 72 short *btn; 73 char *name; 74 unsigned char length; 75 unsigned char b8; 76 }; 77 78 static struct interact_type interact_type[] = { 79 { 0x6202, interact_abs_hhfx, interact_btn_hhfx, "InterAct HammerHead/FX", 32, 4 }, 80 { 0x53f8, interact_abs_pp8d, interact_btn_pp8d, "InterAct ProPad 8 Digital", 16, 0 }, 81 { 0 }}; 82 83 /* 84 * interact_read_packet() reads and InterAct joystick data. 85 */ 86 87 static int interact_read_packet(struct gameport *gameport, int length, u32 *data) 88 { 89 unsigned long flags; 90 unsigned char u, v; 91 unsigned int t, s; 92 int i; 93 94 i = 0; 95 data[0] = data[1] = data[2] = 0; 96 t = gameport_time(gameport, INTERACT_MAX_START); 97 s = gameport_time(gameport, INTERACT_MAX_STROBE); 98 99 local_irq_save(flags); 100 gameport_trigger(gameport); 101 v = gameport_read(gameport); 102 103 while (t > 0 && i < length) { 104 t--; 105 u = v; v = gameport_read(gameport); 106 if (v & ~u & 0x40) { 107 data[0] = (data[0] << 1) | ((v >> 4) & 1); 108 data[1] = (data[1] << 1) | ((v >> 5) & 1); 109 data[2] = (data[2] << 1) | ((v >> 7) & 1); 110 i++; 111 t = s; 112 } 113 } 114 115 local_irq_restore(flags); 116 117 return i; 118 } 119 120 /* 121 * interact_poll() reads and analyzes InterAct joystick data. 122 */ 123 124 static void interact_poll(struct gameport *gameport) 125 { 126 struct interact *interact = gameport_get_drvdata(gameport); 127 struct input_dev *dev = interact->dev; 128 u32 data[3]; 129 int i; 130 131 interact->reads++; 132 133 if (interact_read_packet(interact->gameport, interact->length, data) < interact->length) { 134 interact->bads++; 135 } else { 136 137 for (i = 0; i < 3; i++) 138 data[i] <<= INTERACT_MAX_LENGTH - interact->length; 139 140 switch (interact->type) { 141 142 case INTERACT_TYPE_HHFX: 143 144 for (i = 0; i < 4; i++) 145 input_report_abs(dev, interact_abs_hhfx[i], (data[i & 1] >> ((i >> 1) << 3)) & 0xff); 146 147 for (i = 0; i < 2; i++) 148 input_report_abs(dev, ABS_HAT0Y - i, 149 ((data[1] >> ((i << 1) + 17)) & 1) - ((data[1] >> ((i << 1) + 16)) & 1)); 150 151 for (i = 0; i < 8; i++) 152 input_report_key(dev, interact_btn_hhfx[i], (data[0] >> (i + 16)) & 1); 153 154 for (i = 0; i < 4; i++) 155 input_report_key(dev, interact_btn_hhfx[i + 8], (data[1] >> (i + 20)) & 1); 156 157 break; 158 159 case INTERACT_TYPE_PP8D: 160 161 for (i = 0; i < 2; i++) 162 input_report_abs(dev, interact_abs_pp8d[i], 163 ((data[0] >> ((i << 1) + 20)) & 1) - ((data[0] >> ((i << 1) + 21)) & 1)); 164 165 for (i = 0; i < 8; i++) 166 input_report_key(dev, interact_btn_pp8d[i], (data[1] >> (i + 16)) & 1); 167 168 break; 169 } 170 } 171 172 input_sync(dev); 173 } 174 175 /* 176 * interact_open() is a callback from the input open routine. 177 */ 178 179 static int interact_open(struct input_dev *dev) 180 { 181 struct interact *interact = input_get_drvdata(dev); 182 183 gameport_start_polling(interact->gameport); 184 return 0; 185 } 186 187 /* 188 * interact_close() is a callback from the input close routine. 189 */ 190 191 static void interact_close(struct input_dev *dev) 192 { 193 struct interact *interact = input_get_drvdata(dev); 194 195 gameport_stop_polling(interact->gameport); 196 } 197 198 /* 199 * interact_connect() probes for InterAct joysticks. 200 */ 201 202 static int interact_connect(struct gameport *gameport, struct gameport_driver *drv) 203 { 204 struct interact *interact; 205 struct input_dev *input_dev; 206 __u32 data[3]; 207 int i, t; 208 int err; 209 210 interact = kzalloc(sizeof(struct interact), GFP_KERNEL); 211 input_dev = input_allocate_device(); 212 if (!interact || !input_dev) { 213 err = -ENOMEM; 214 goto fail1; 215 } 216 217 interact->gameport = gameport; 218 interact->dev = input_dev; 219 220 gameport_set_drvdata(gameport, interact); 221 222 err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW); 223 if (err) 224 goto fail1; 225 226 i = interact_read_packet(gameport, INTERACT_MAX_LENGTH * 2, data); 227 228 if (i != 32 || (data[0] >> 24) != 0x0c || (data[1] >> 24) != 0x02) { 229 err = -ENODEV; 230 goto fail2; 231 } 232 233 for (i = 0; interact_type[i].length; i++) 234 if (interact_type[i].id == (data[2] >> 16)) 235 break; 236 237 if (!interact_type[i].length) { 238 printk(KERN_WARNING "interact.c: Unknown joystick on %s. [len %d d0 %08x d1 %08x i2 %08x]\n", 239 gameport->phys, i, data[0], data[1], data[2]); 240 err = -ENODEV; 241 goto fail2; 242 } 243 244 gameport_set_poll_handler(gameport, interact_poll); 245 gameport_set_poll_interval(gameport, 20); 246 247 snprintf(interact->phys, sizeof(interact->phys), "%s/input0", gameport->phys); 248 249 interact->type = i; 250 interact->length = interact_type[i].length; 251 252 input_dev->name = interact_type[i].name; 253 input_dev->phys = interact->phys; 254 input_dev->id.bustype = BUS_GAMEPORT; 255 input_dev->id.vendor = GAMEPORT_ID_VENDOR_INTERACT; 256 input_dev->id.product = interact_type[i].id; 257 input_dev->id.version = 0x0100; 258 input_dev->dev.parent = &gameport->dev; 259 260 input_set_drvdata(input_dev, interact); 261 262 input_dev->open = interact_open; 263 input_dev->close = interact_close; 264 265 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 266 267 for (i = 0; (t = interact_type[interact->type].abs[i]) >= 0; i++) { 268 if (i < interact_type[interact->type].b8) 269 input_set_abs_params(input_dev, t, 0, 255, 0, 0); 270 else 271 input_set_abs_params(input_dev, t, -1, 1, 0, 0); 272 } 273 274 for (i = 0; (t = interact_type[interact->type].btn[i]) >= 0; i++) 275 __set_bit(t, input_dev->keybit); 276 277 err = input_register_device(interact->dev); 278 if (err) 279 goto fail2; 280 281 return 0; 282 283 fail2: gameport_close(gameport); 284 fail1: gameport_set_drvdata(gameport, NULL); 285 input_free_device(input_dev); 286 kfree(interact); 287 return err; 288 } 289 290 static void interact_disconnect(struct gameport *gameport) 291 { 292 struct interact *interact = gameport_get_drvdata(gameport); 293 294 input_unregister_device(interact->dev); 295 gameport_close(gameport); 296 gameport_set_drvdata(gameport, NULL); 297 kfree(interact); 298 } 299 300 static struct gameport_driver interact_drv = { 301 .driver = { 302 .name = "interact", 303 }, 304 .description = DRIVER_DESC, 305 .connect = interact_connect, 306 .disconnect = interact_disconnect, 307 }; 308 309 module_gameport_driver(interact_drv); 310