Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * $Id: interact.c,v 1.16 2002/01/22 20:28:25 vojtech Exp $ |
| 3 | * |
| 4 | * Copyright (c) 2001 Vojtech Pavlik |
| 5 | * |
| 6 | * Based on the work of: |
| 7 | * Toby Deshane |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * InterAct digital gamepad/joystick 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/delay.h> |
| 38 | #include <linux/init.h> |
| 39 | #include <linux/gameport.h> |
| 40 | #include <linux/input.h> |
| 41 | |
| 42 | #define DRIVER_DESC "InterAct digital joystick driver" |
| 43 | |
| 44 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); |
| 45 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 46 | MODULE_LICENSE("GPL"); |
| 47 | |
| 48 | #define INTERACT_MAX_START 600 /* 400 us */ |
| 49 | #define INTERACT_MAX_STROBE 60 /* 40 us */ |
| 50 | #define INTERACT_MAX_LENGTH 32 /* 32 bits */ |
| 51 | |
| 52 | #define INTERACT_TYPE_HHFX 0 /* HammerHead/FX */ |
| 53 | #define INTERACT_TYPE_PP8D 1 /* ProPad 8 */ |
| 54 | |
| 55 | struct interact { |
| 56 | struct gameport *gameport; |
| 57 | struct input_dev dev; |
| 58 | int bads; |
| 59 | int reads; |
| 60 | unsigned char type; |
| 61 | unsigned char length; |
| 62 | char phys[32]; |
| 63 | }; |
| 64 | |
| 65 | static short interact_abs_hhfx[] = |
| 66 | { ABS_RX, ABS_RY, ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y, -1 }; |
| 67 | static short interact_abs_pp8d[] = |
| 68 | { ABS_X, ABS_Y, -1 }; |
| 69 | |
| 70 | static short interact_btn_hhfx[] = |
| 71 | { 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 }; |
| 72 | static short interact_btn_pp8d[] = |
| 73 | { BTN_C, BTN_TL, BTN_TR, BTN_A, BTN_B, BTN_Y, BTN_Z, BTN_X, -1 }; |
| 74 | |
| 75 | struct interact_type { |
| 76 | int id; |
| 77 | short *abs; |
| 78 | short *btn; |
| 79 | char *name; |
| 80 | unsigned char length; |
| 81 | unsigned char b8; |
| 82 | }; |
| 83 | |
| 84 | static struct interact_type interact_type[] = { |
| 85 | { 0x6202, interact_abs_hhfx, interact_btn_hhfx, "InterAct HammerHead/FX", 32, 4 }, |
| 86 | { 0x53f8, interact_abs_pp8d, interact_btn_pp8d, "InterAct ProPad 8 Digital", 16, 0 }, |
| 87 | { 0 }}; |
| 88 | |
| 89 | /* |
| 90 | * interact_read_packet() reads and InterAct joystick data. |
| 91 | */ |
| 92 | |
| 93 | static int interact_read_packet(struct gameport *gameport, int length, u32 *data) |
| 94 | { |
| 95 | unsigned long flags; |
| 96 | unsigned char u, v; |
| 97 | unsigned int t, s; |
| 98 | int i; |
| 99 | |
| 100 | i = 0; |
| 101 | data[0] = data[1] = data[2] = 0; |
| 102 | t = gameport_time(gameport, INTERACT_MAX_START); |
| 103 | s = gameport_time(gameport, INTERACT_MAX_STROBE); |
| 104 | |
| 105 | local_irq_save(flags); |
| 106 | gameport_trigger(gameport); |
| 107 | v = gameport_read(gameport); |
| 108 | |
| 109 | while (t > 0 && i < length) { |
| 110 | t--; |
| 111 | u = v; v = gameport_read(gameport); |
| 112 | if (v & ~u & 0x40) { |
| 113 | data[0] = (data[0] << 1) | ((v >> 4) & 1); |
| 114 | data[1] = (data[1] << 1) | ((v >> 5) & 1); |
| 115 | data[2] = (data[2] << 1) | ((v >> 7) & 1); |
| 116 | i++; |
| 117 | t = s; |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | local_irq_restore(flags); |
| 122 | |
| 123 | return i; |
| 124 | } |
| 125 | |
| 126 | /* |
| 127 | * interact_poll() reads and analyzes InterAct joystick data. |
| 128 | */ |
| 129 | |
| 130 | static void interact_poll(struct gameport *gameport) |
| 131 | { |
| 132 | struct interact *interact = gameport_get_drvdata(gameport); |
| 133 | struct input_dev *dev = &interact->dev; |
| 134 | u32 data[3]; |
| 135 | int i; |
| 136 | |
| 137 | interact->reads++; |
| 138 | |
| 139 | if (interact_read_packet(interact->gameport, interact->length, data) < interact->length) { |
| 140 | interact->bads++; |
| 141 | } else { |
| 142 | |
| 143 | for (i = 0; i < 3; i++) |
| 144 | data[i] <<= INTERACT_MAX_LENGTH - interact->length; |
| 145 | |
| 146 | switch (interact->type) { |
| 147 | |
| 148 | case INTERACT_TYPE_HHFX: |
| 149 | |
| 150 | for (i = 0; i < 4; i++) |
| 151 | input_report_abs(dev, interact_abs_hhfx[i], (data[i & 1] >> ((i >> 1) << 3)) & 0xff); |
| 152 | |
| 153 | for (i = 0; i < 2; i++) |
| 154 | input_report_abs(dev, ABS_HAT0Y - i, |
| 155 | ((data[1] >> ((i << 1) + 17)) & 1) - ((data[1] >> ((i << 1) + 16)) & 1)); |
| 156 | |
| 157 | for (i = 0; i < 8; i++) |
| 158 | input_report_key(dev, interact_btn_hhfx[i], (data[0] >> (i + 16)) & 1); |
| 159 | |
| 160 | for (i = 0; i < 4; i++) |
| 161 | input_report_key(dev, interact_btn_hhfx[i + 8], (data[1] >> (i + 20)) & 1); |
| 162 | |
| 163 | break; |
| 164 | |
| 165 | case INTERACT_TYPE_PP8D: |
| 166 | |
| 167 | for (i = 0; i < 2; i++) |
| 168 | input_report_abs(dev, interact_abs_pp8d[i], |
| 169 | ((data[0] >> ((i << 1) + 20)) & 1) - ((data[0] >> ((i << 1) + 21)) & 1)); |
| 170 | |
| 171 | for (i = 0; i < 8; i++) |
| 172 | input_report_key(dev, interact_btn_pp8d[i], (data[1] >> (i + 16)) & 1); |
| 173 | |
| 174 | break; |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | input_sync(dev); |
| 179 | } |
| 180 | |
| 181 | /* |
| 182 | * interact_open() is a callback from the input open routine. |
| 183 | */ |
| 184 | |
| 185 | static int interact_open(struct input_dev *dev) |
| 186 | { |
| 187 | struct interact *interact = dev->private; |
| 188 | |
| 189 | gameport_start_polling(interact->gameport); |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | /* |
| 194 | * interact_close() is a callback from the input close routine. |
| 195 | */ |
| 196 | |
| 197 | static void interact_close(struct input_dev *dev) |
| 198 | { |
| 199 | struct interact *interact = dev->private; |
| 200 | |
| 201 | gameport_stop_polling(interact->gameport); |
| 202 | } |
| 203 | |
| 204 | /* |
| 205 | * interact_connect() probes for InterAct joysticks. |
| 206 | */ |
| 207 | |
| 208 | static int interact_connect(struct gameport *gameport, struct gameport_driver *drv) |
| 209 | { |
| 210 | struct interact *interact; |
| 211 | __u32 data[3]; |
| 212 | int i, t; |
| 213 | int err; |
| 214 | |
Pekka Enberg | a97e148 | 2005-09-06 15:18:33 -0700 | [diff] [blame] | 215 | if (!(interact = kzalloc(sizeof(struct interact), GFP_KERNEL))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | return -ENOMEM; |
| 217 | |
| 218 | interact->gameport = gameport; |
| 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 | sprintf(interact->phys, "%s/input0", gameport->phys); |
| 248 | |
| 249 | interact->type = i; |
| 250 | interact->length = interact_type[i].length; |
| 251 | |
| 252 | interact->dev.private = interact; |
| 253 | interact->dev.open = interact_open; |
| 254 | interact->dev.close = interact_close; |
| 255 | |
| 256 | interact->dev.name = interact_type[i].name; |
| 257 | interact->dev.phys = interact->phys; |
| 258 | interact->dev.id.bustype = BUS_GAMEPORT; |
| 259 | interact->dev.id.vendor = GAMEPORT_ID_VENDOR_INTERACT; |
| 260 | interact->dev.id.product = interact_type[i].id; |
| 261 | interact->dev.id.version = 0x0100; |
| 262 | |
| 263 | interact->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); |
| 264 | |
| 265 | for (i = 0; (t = interact_type[interact->type].abs[i]) >= 0; i++) { |
| 266 | set_bit(t, interact->dev.absbit); |
| 267 | if (i < interact_type[interact->type].b8) { |
| 268 | interact->dev.absmin[t] = 0; |
| 269 | interact->dev.absmax[t] = 255; |
| 270 | } else { |
| 271 | interact->dev.absmin[t] = -1; |
| 272 | interact->dev.absmax[t] = 1; |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | for (i = 0; (t = interact_type[interact->type].btn[i]) >= 0; i++) |
| 277 | set_bit(t, interact->dev.keybit); |
| 278 | |
| 279 | input_register_device(&interact->dev); |
| 280 | printk(KERN_INFO "input: %s on %s\n", |
| 281 | interact_type[interact->type].name, gameport->phys); |
| 282 | |
| 283 | return 0; |
| 284 | |
| 285 | fail2: gameport_close(gameport); |
| 286 | fail1: gameport_set_drvdata(gameport, NULL); |
| 287 | kfree(interact); |
| 288 | return err; |
| 289 | } |
| 290 | |
| 291 | static void interact_disconnect(struct gameport *gameport) |
| 292 | { |
| 293 | struct interact *interact = gameport_get_drvdata(gameport); |
| 294 | |
| 295 | input_unregister_device(&interact->dev); |
| 296 | gameport_close(gameport); |
| 297 | gameport_set_drvdata(gameport, NULL); |
| 298 | kfree(interact); |
| 299 | } |
| 300 | |
| 301 | static struct gameport_driver interact_drv = { |
| 302 | .driver = { |
| 303 | .name = "interact", |
| 304 | }, |
| 305 | .description = DRIVER_DESC, |
| 306 | .connect = interact_connect, |
| 307 | .disconnect = interact_disconnect, |
| 308 | }; |
| 309 | |
| 310 | static int __init interact_init(void) |
| 311 | { |
| 312 | gameport_register_driver(&interact_drv); |
| 313 | return 0; |
| 314 | } |
| 315 | |
| 316 | static void __exit interact_exit(void) |
| 317 | { |
| 318 | gameport_unregister_driver(&interact_drv); |
| 319 | } |
| 320 | |
| 321 | module_init(interact_init); |
| 322 | module_exit(interact_exit); |