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/init.h> 37#include <linux/gameport.h> 38#include <linux/input.h> 39#include <linux/jiffies.h> 40 41#define DRIVER_DESC "InterAct digital joystick driver" 42 43MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 44MODULE_DESCRIPTION(DRIVER_DESC); 45MODULE_LICENSE("GPL"); 46 47#define INTERACT_MAX_START 600 /* 400 us */ 48#define INTERACT_MAX_STROBE 60 /* 40 us */ 49#define INTERACT_MAX_LENGTH 32 /* 32 bits */ 50 51#define INTERACT_TYPE_HHFX 0 /* HammerHead/FX */ 52#define INTERACT_TYPE_PP8D 1 /* ProPad 8 */ 53 54struct interact { 55 struct gameport *gameport; 56 struct input_dev *dev; 57 int bads; 58 int reads; 59 unsigned char type; 60 unsigned char length; 61 char phys[32]; 62}; 63 64static short interact_abs_hhfx[] = 65 { ABS_RX, ABS_RY, ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y, -1 }; 66static short interact_abs_pp8d[] = 67 { ABS_X, ABS_Y, -1 }; 68 69static short interact_btn_hhfx[] = 70 { 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 }; 71static short interact_btn_pp8d[] = 72 { BTN_C, BTN_TL, BTN_TR, BTN_A, BTN_B, BTN_Y, BTN_Z, BTN_X, -1 }; 73 74struct interact_type { 75 int id; 76 short *abs; 77 short *btn; 78 char *name; 79 unsigned char length; 80 unsigned char b8; 81}; 82 83static struct interact_type interact_type[] = { 84 { 0x6202, interact_abs_hhfx, interact_btn_hhfx, "InterAct HammerHead/FX", 32, 4 }, 85 { 0x53f8, interact_abs_pp8d, interact_btn_pp8d, "InterAct ProPad 8 Digital", 16, 0 }, 86 { 0 }}; 87 88/* 89 * interact_read_packet() reads and InterAct joystick data. 90 */ 91 92static int interact_read_packet(struct gameport *gameport, int length, u32 *data) 93{ 94 unsigned long flags; 95 unsigned char u, v; 96 unsigned int t, s; 97 int i; 98 99 i = 0; 100 data[0] = data[1] = data[2] = 0; 101 t = gameport_time(gameport, INTERACT_MAX_START); 102 s = gameport_time(gameport, INTERACT_MAX_STROBE); 103 104 local_irq_save(flags); 105 gameport_trigger(gameport); 106 v = gameport_read(gameport); 107 108 while (t > 0 && i < length) { 109 t--; 110 u = v; v = gameport_read(gameport); 111 if (v & ~u & 0x40) { 112 data[0] = (data[0] << 1) | ((v >> 4) & 1); 113 data[1] = (data[1] << 1) | ((v >> 5) & 1); 114 data[2] = (data[2] << 1) | ((v >> 7) & 1); 115 i++; 116 t = s; 117 } 118 } 119 120 local_irq_restore(flags); 121 122 return i; 123} 124 125/* 126 * interact_poll() reads and analyzes InterAct joystick data. 127 */ 128 129static void interact_poll(struct gameport *gameport) 130{ 131 struct interact *interact = gameport_get_drvdata(gameport); 132 struct input_dev *dev = interact->dev; 133 u32 data[3]; 134 int i; 135 136 interact->reads++; 137 138 if (interact_read_packet(interact->gameport, interact->length, data) < interact->length) { 139 interact->bads++; 140 } else { 141 142 for (i = 0; i < 3; i++) 143 data[i] <<= INTERACT_MAX_LENGTH - interact->length; 144 145 switch (interact->type) { 146 147 case INTERACT_TYPE_HHFX: 148 149 for (i = 0; i < 4; i++) 150 input_report_abs(dev, interact_abs_hhfx[i], (data[i & 1] >> ((i >> 1) << 3)) & 0xff); 151 152 for (i = 0; i < 2; i++) 153 input_report_abs(dev, ABS_HAT0Y - i, 154 ((data[1] >> ((i << 1) + 17)) & 1) - ((data[1] >> ((i << 1) + 16)) & 1)); 155 156 for (i = 0; i < 8; i++) 157 input_report_key(dev, interact_btn_hhfx[i], (data[0] >> (i + 16)) & 1); 158 159 for (i = 0; i < 4; i++) 160 input_report_key(dev, interact_btn_hhfx[i + 8], (data[1] >> (i + 20)) & 1); 161 162 break; 163 164 case INTERACT_TYPE_PP8D: 165 166 for (i = 0; i < 2; i++) 167 input_report_abs(dev, interact_abs_pp8d[i], 168 ((data[0] >> ((i << 1) + 20)) & 1) - ((data[0] >> ((i << 1) + 21)) & 1)); 169 170 for (i = 0; i < 8; i++) 171 input_report_key(dev, interact_btn_pp8d[i], (data[1] >> (i + 16)) & 1); 172 173 break; 174 } 175 } 176 177 input_sync(dev); 178} 179 180/* 181 * interact_open() is a callback from the input open routine. 182 */ 183 184static int interact_open(struct input_dev *dev) 185{ 186 struct interact *interact = input_get_drvdata(dev); 187 188 gameport_start_polling(interact->gameport); 189 return 0; 190} 191 192/* 193 * interact_close() is a callback from the input close routine. 194 */ 195 196static void interact_close(struct input_dev *dev) 197{ 198 struct interact *interact = input_get_drvdata(dev); 199 200 gameport_stop_polling(interact->gameport); 201} 202 203/* 204 * interact_connect() probes for InterAct joysticks. 205 */ 206 207static int interact_connect(struct gameport *gameport, struct gameport_driver *drv) 208{ 209 struct interact *interact; 210 struct input_dev *input_dev; 211 __u32 data[3]; 212 int i, t; 213 int err; 214 215 interact = kzalloc(sizeof(struct interact), GFP_KERNEL); 216 input_dev = input_allocate_device(); 217 if (!interact || !input_dev) { 218 err = -ENOMEM; 219 goto fail1; 220 } 221 222 interact->gameport = gameport; 223 interact->dev = input_dev; 224 225 gameport_set_drvdata(gameport, interact); 226 227 err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW); 228 if (err) 229 goto fail1; 230 231 i = interact_read_packet(gameport, INTERACT_MAX_LENGTH * 2, data); 232 233 if (i != 32 || (data[0] >> 24) != 0x0c || (data[1] >> 24) != 0x02) { 234 err = -ENODEV; 235 goto fail2; 236 } 237 238 for (i = 0; interact_type[i].length; i++) 239 if (interact_type[i].id == (data[2] >> 16)) 240 break; 241 242 if (!interact_type[i].length) { 243 printk(KERN_WARNING "interact.c: Unknown joystick on %s. [len %d d0 %08x d1 %08x i2 %08x]\n", 244 gameport->phys, i, data[0], data[1], data[2]); 245 err = -ENODEV; 246 goto fail2; 247 } 248 249 gameport_set_poll_handler(gameport, interact_poll); 250 gameport_set_poll_interval(gameport, 20); 251 252 snprintf(interact->phys, sizeof(interact->phys), "%s/input0", gameport->phys); 253 254 interact->type = i; 255 interact->length = interact_type[i].length; 256 257 input_dev->name = interact_type[i].name; 258 input_dev->phys = interact->phys; 259 input_dev->id.bustype = BUS_GAMEPORT; 260 input_dev->id.vendor = GAMEPORT_ID_VENDOR_INTERACT; 261 input_dev->id.product = interact_type[i].id; 262 input_dev->id.version = 0x0100; 263 input_dev->dev.parent = &gameport->dev; 264 265 input_set_drvdata(input_dev, interact); 266 267 input_dev->open = interact_open; 268 input_dev->close = interact_close; 269 270 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 271 272 for (i = 0; (t = interact_type[interact->type].abs[i]) >= 0; i++) { 273 if (i < interact_type[interact->type].b8) 274 input_set_abs_params(input_dev, t, 0, 255, 0, 0); 275 else 276 input_set_abs_params(input_dev, t, -1, 1, 0, 0); 277 } 278 279 for (i = 0; (t = interact_type[interact->type].btn[i]) >= 0; i++) 280 __set_bit(t, input_dev->keybit); 281 282 err = input_register_device(interact->dev); 283 if (err) 284 goto fail2; 285 286 return 0; 287 288fail2: gameport_close(gameport); 289fail1: gameport_set_drvdata(gameport, NULL); 290 input_free_device(input_dev); 291 kfree(interact); 292 return err; 293} 294 295static void interact_disconnect(struct gameport *gameport) 296{ 297 struct interact *interact = gameport_get_drvdata(gameport); 298 299 input_unregister_device(interact->dev); 300 gameport_close(gameport); 301 gameport_set_drvdata(gameport, NULL); 302 kfree(interact); 303} 304 305static struct gameport_driver interact_drv = { 306 .driver = { 307 .name = "interact", 308 }, 309 .description = DRIVER_DESC, 310 .connect = interact_connect, 311 .disconnect = interact_disconnect, 312}; 313 314static int __init interact_init(void) 315{ 316 return gameport_register_driver(&interact_drv); 317} 318 319static void __exit interact_exit(void) 320{ 321 gameport_unregister_driver(&interact_drv); 322} 323 324module_init(interact_init); 325module_exit(interact_exit); 326