1 /* 2 * Logitech PS/2++ mouse driver 3 * 4 * Copyright (c) 1999-2003 Vojtech Pavlik <vojtech@suse.cz> 5 * Copyright (c) 2003 Eric Wong <eric@yhbt.net> 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License version 2 as published by 9 * the Free Software Foundation. 10 */ 11 12 #include <linux/input.h> 13 #include <linux/serio.h> 14 #include <linux/libps2.h> 15 #include "psmouse.h" 16 #include "logips2pp.h" 17 18 /* Logitech mouse types */ 19 #define PS2PP_KIND_WHEEL 1 20 #define PS2PP_KIND_MX 2 21 #define PS2PP_KIND_TP3 3 22 #define PS2PP_KIND_TRACKMAN 4 23 24 /* Logitech mouse features */ 25 #define PS2PP_WHEEL 0x01 26 #define PS2PP_HWHEEL 0x02 27 #define PS2PP_SIDE_BTN 0x04 28 #define PS2PP_EXTRA_BTN 0x08 29 #define PS2PP_TASK_BTN 0x10 30 #define PS2PP_NAV_BTN 0x20 31 32 struct ps2pp_info { 33 u8 model; 34 u8 kind; 35 u16 features; 36 }; 37 38 /* 39 * Process a PS2++ or PS2T++ packet. 40 */ 41 42 static psmouse_ret_t ps2pp_process_byte(struct psmouse *psmouse) 43 { 44 struct input_dev *dev = psmouse->dev; 45 unsigned char *packet = psmouse->packet; 46 47 if (psmouse->pktcnt < 3) 48 return PSMOUSE_GOOD_DATA; 49 50 /* 51 * Full packet accumulated, process it 52 */ 53 54 if ((packet[0] & 0x48) == 0x48 && (packet[1] & 0x02) == 0x02) { 55 56 /* Logitech extended packet */ 57 switch ((packet[1] >> 4) | (packet[0] & 0x30)) { 58 59 case 0x0d: /* Mouse extra info */ 60 61 input_report_rel(dev, packet[2] & 0x80 ? REL_HWHEEL : REL_WHEEL, 62 (int) (packet[2] & 8) - (int) (packet[2] & 7)); 63 input_report_key(dev, BTN_SIDE, (packet[2] >> 4) & 1); 64 input_report_key(dev, BTN_EXTRA, (packet[2] >> 5) & 1); 65 66 break; 67 68 case 0x0e: /* buttons 4, 5, 6, 7, 8, 9, 10 info */ 69 70 input_report_key(dev, BTN_SIDE, (packet[2]) & 1); 71 input_report_key(dev, BTN_EXTRA, (packet[2] >> 1) & 1); 72 input_report_key(dev, BTN_BACK, (packet[2] >> 3) & 1); 73 input_report_key(dev, BTN_FORWARD, (packet[2] >> 4) & 1); 74 input_report_key(dev, BTN_TASK, (packet[2] >> 2) & 1); 75 76 break; 77 78 case 0x0f: /* TouchPad extra info */ 79 80 input_report_rel(dev, packet[2] & 0x08 ? REL_HWHEEL : REL_WHEEL, 81 (int) ((packet[2] >> 4) & 8) - (int) ((packet[2] >> 4) & 7)); 82 packet[0] = packet[2] | 0x08; 83 break; 84 85 #ifdef DEBUG 86 default: 87 printk(KERN_WARNING "psmouse.c: Received PS2++ packet #%x, but don't know how to handle.\n", 88 (packet[1] >> 4) | (packet[0] & 0x30)); 89 #endif 90 } 91 } else { 92 /* Standard PS/2 motion data */ 93 input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0); 94 input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0); 95 } 96 97 input_report_key(dev, BTN_LEFT, packet[0] & 1); 98 input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1); 99 input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1); 100 101 input_sync(dev); 102 103 return PSMOUSE_FULL_PACKET; 104 105 } 106 107 /* 108 * ps2pp_cmd() sends a PS2++ command, sliced into two bit 109 * pieces through the SETRES command. This is needed to send extended 110 * commands to mice on notebooks that try to understand the PS/2 protocol 111 * Ugly. 112 */ 113 114 static int ps2pp_cmd(struct psmouse *psmouse, unsigned char *param, unsigned char command) 115 { 116 if (psmouse_sliced_command(psmouse, command)) 117 return -1; 118 119 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_POLL | 0x0300)) 120 return -1; 121 122 return 0; 123 } 124 125 /* 126 * SmartScroll / CruiseControl for some newer Logitech mice Defaults to 127 * enabled if we do nothing to it. Of course I put this in because I want it 128 * disabled :P 129 * 1 - enabled (if previously disabled, also default) 130 * 0 - disabled 131 */ 132 133 static void ps2pp_set_smartscroll(struct psmouse *psmouse, bool smartscroll) 134 { 135 struct ps2dev *ps2dev = &psmouse->ps2dev; 136 unsigned char param[4]; 137 138 ps2pp_cmd(psmouse, param, 0x32); 139 140 param[0] = 0; 141 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 142 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 143 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 144 145 param[0] = smartscroll; 146 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 147 } 148 149 static ssize_t ps2pp_attr_show_smartscroll(struct psmouse *psmouse, 150 void *data, char *buf) 151 { 152 return sprintf(buf, "%d\n", psmouse->smartscroll); 153 } 154 155 static ssize_t ps2pp_attr_set_smartscroll(struct psmouse *psmouse, void *data, 156 const char *buf, size_t count) 157 { 158 unsigned long value; 159 160 if (strict_strtoul(buf, 10, &value) || value > 1) 161 return -EINVAL; 162 163 ps2pp_set_smartscroll(psmouse, value); 164 psmouse->smartscroll = value; 165 return count; 166 } 167 168 PSMOUSE_DEFINE_ATTR(smartscroll, S_IWUSR | S_IRUGO, NULL, 169 ps2pp_attr_show_smartscroll, ps2pp_attr_set_smartscroll); 170 171 /* 172 * Support 800 dpi resolution _only_ if the user wants it (there are good 173 * reasons to not use it even if the mouse supports it, and of course there are 174 * also good reasons to use it, let the user decide). 175 */ 176 177 static void ps2pp_set_resolution(struct psmouse *psmouse, unsigned int resolution) 178 { 179 if (resolution > 400) { 180 struct ps2dev *ps2dev = &psmouse->ps2dev; 181 unsigned char param = 3; 182 183 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); 184 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); 185 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); 186 ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES); 187 psmouse->resolution = 800; 188 } else 189 psmouse_set_resolution(psmouse, resolution); 190 } 191 192 static void ps2pp_disconnect(struct psmouse *psmouse) 193 { 194 device_remove_file(&psmouse->ps2dev.serio->dev, &psmouse_attr_smartscroll.dattr); 195 } 196 197 static const struct ps2pp_info *get_model_info(unsigned char model) 198 { 199 static const struct ps2pp_info ps2pp_list[] = { 200 { 1, 0, 0 }, /* Simple 2-button mouse */ 201 { 12, 0, PS2PP_SIDE_BTN}, 202 { 13, 0, 0 }, 203 { 15, PS2PP_KIND_MX, /* MX1000 */ 204 PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN | 205 PS2PP_EXTRA_BTN | PS2PP_NAV_BTN | PS2PP_HWHEEL }, 206 { 40, 0, PS2PP_SIDE_BTN }, 207 { 41, 0, PS2PP_SIDE_BTN }, 208 { 42, 0, PS2PP_SIDE_BTN }, 209 { 43, 0, PS2PP_SIDE_BTN }, 210 { 50, 0, 0 }, 211 { 51, 0, 0 }, 212 { 52, PS2PP_KIND_WHEEL, PS2PP_SIDE_BTN | PS2PP_WHEEL }, 213 { 53, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, 214 { 56, PS2PP_KIND_WHEEL, PS2PP_SIDE_BTN | PS2PP_WHEEL }, /* Cordless MouseMan Wheel */ 215 { 61, PS2PP_KIND_MX, /* MX700 */ 216 PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN | 217 PS2PP_EXTRA_BTN | PS2PP_NAV_BTN }, 218 { 66, PS2PP_KIND_MX, /* MX3100 reciver */ 219 PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN | 220 PS2PP_EXTRA_BTN | PS2PP_NAV_BTN | PS2PP_HWHEEL }, 221 { 72, PS2PP_KIND_TRACKMAN, 0 }, /* T-CH11: TrackMan Marble */ 222 { 73, PS2PP_KIND_TRACKMAN, PS2PP_SIDE_BTN }, /* TrackMan FX */ 223 { 75, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, 224 { 76, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, 225 { 79, PS2PP_KIND_TRACKMAN, PS2PP_WHEEL }, /* TrackMan with wheel */ 226 { 80, PS2PP_KIND_WHEEL, PS2PP_SIDE_BTN | PS2PP_WHEEL }, 227 { 81, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, 228 { 83, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, 229 { 85, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, 230 { 86, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, 231 { 87, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, 232 { 88, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, 233 { 96, 0, 0 }, 234 { 97, PS2PP_KIND_TP3, PS2PP_WHEEL | PS2PP_HWHEEL }, 235 { 99, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, 236 { 100, PS2PP_KIND_MX, /* MX510 */ 237 PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN | 238 PS2PP_EXTRA_BTN | PS2PP_NAV_BTN }, 239 { 111, PS2PP_KIND_MX, PS2PP_WHEEL | PS2PP_SIDE_BTN }, /* MX300 reports task button as side */ 240 { 112, PS2PP_KIND_MX, /* MX500 */ 241 PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN | 242 PS2PP_EXTRA_BTN | PS2PP_NAV_BTN }, 243 { 114, PS2PP_KIND_MX, /* MX310 */ 244 PS2PP_WHEEL | PS2PP_SIDE_BTN | 245 PS2PP_TASK_BTN | PS2PP_EXTRA_BTN } 246 }; 247 int i; 248 249 for (i = 0; i < ARRAY_SIZE(ps2pp_list); i++) 250 if (model == ps2pp_list[i].model) 251 return &ps2pp_list[i]; 252 253 return NULL; 254 } 255 256 /* 257 * Set up input device's properties based on the detected mouse model. 258 */ 259 260 static void ps2pp_set_model_properties(struct psmouse *psmouse, 261 const struct ps2pp_info *model_info, 262 bool using_ps2pp) 263 { 264 struct input_dev *input_dev = psmouse->dev; 265 266 if (model_info->features & PS2PP_SIDE_BTN) 267 __set_bit(BTN_SIDE, input_dev->keybit); 268 269 if (model_info->features & PS2PP_EXTRA_BTN) 270 __set_bit(BTN_EXTRA, input_dev->keybit); 271 272 if (model_info->features & PS2PP_TASK_BTN) 273 __set_bit(BTN_TASK, input_dev->keybit); 274 275 if (model_info->features & PS2PP_NAV_BTN) { 276 __set_bit(BTN_FORWARD, input_dev->keybit); 277 __set_bit(BTN_BACK, input_dev->keybit); 278 } 279 280 if (model_info->features & PS2PP_WHEEL) 281 __set_bit(REL_WHEEL, input_dev->relbit); 282 283 if (model_info->features & PS2PP_HWHEEL) 284 __set_bit(REL_HWHEEL, input_dev->relbit); 285 286 switch (model_info->kind) { 287 288 case PS2PP_KIND_WHEEL: 289 psmouse->name = "Wheel Mouse"; 290 break; 291 292 case PS2PP_KIND_MX: 293 psmouse->name = "MX Mouse"; 294 break; 295 296 case PS2PP_KIND_TP3: 297 psmouse->name = "TouchPad 3"; 298 break; 299 300 case PS2PP_KIND_TRACKMAN: 301 psmouse->name = "TrackMan"; 302 break; 303 304 default: 305 /* 306 * Set name to "Mouse" only when using PS2++, 307 * otherwise let other protocols define suitable 308 * name 309 */ 310 if (using_ps2pp) 311 psmouse->name = "Mouse"; 312 break; 313 } 314 } 315 316 317 /* 318 * Logitech magic init. Detect whether the mouse is a Logitech one 319 * and its exact model and try turning on extended protocol for ones 320 * that support it. 321 */ 322 323 int ps2pp_init(struct psmouse *psmouse, bool set_properties) 324 { 325 struct ps2dev *ps2dev = &psmouse->ps2dev; 326 unsigned char param[4]; 327 unsigned char model, buttons; 328 const struct ps2pp_info *model_info; 329 bool use_ps2pp = false; 330 int error; 331 332 param[0] = 0; 333 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 334 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); 335 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); 336 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); 337 param[1] = 0; 338 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); 339 340 model = ((param[0] >> 4) & 0x07) | ((param[0] << 3) & 0x78); 341 buttons = param[1]; 342 343 if (!model || !buttons) 344 return -1; 345 346 model_info = get_model_info(model); 347 if (model_info) { 348 349 /* 350 * Do Logitech PS2++ / PS2T++ magic init. 351 */ 352 if (model_info->kind == PS2PP_KIND_TP3) { /* Touch Pad 3 */ 353 354 /* Unprotect RAM */ 355 param[0] = 0x11; param[1] = 0x04; param[2] = 0x68; 356 ps2_command(ps2dev, param, 0x30d1); 357 /* Enable features */ 358 param[0] = 0x11; param[1] = 0x05; param[2] = 0x0b; 359 ps2_command(ps2dev, param, 0x30d1); 360 /* Enable PS2++ */ 361 param[0] = 0x11; param[1] = 0x09; param[2] = 0xc3; 362 ps2_command(ps2dev, param, 0x30d1); 363 364 param[0] = 0; 365 if (!ps2_command(ps2dev, param, 0x13d1) && 366 param[0] == 0x06 && param[1] == 0x00 && param[2] == 0x14) { 367 use_ps2pp = true; 368 } 369 370 } else { 371 372 param[0] = param[1] = param[2] = 0; 373 ps2pp_cmd(psmouse, param, 0x39); /* Magic knock */ 374 ps2pp_cmd(psmouse, param, 0xDB); 375 376 if ((param[0] & 0x78) == 0x48 && 377 (param[1] & 0xf3) == 0xc2 && 378 (param[2] & 0x03) == ((param[1] >> 2) & 3)) { 379 ps2pp_set_smartscroll(psmouse, false); 380 use_ps2pp = true; 381 } 382 } 383 384 } else { 385 printk(KERN_WARNING "logips2pp: Detected unknown logitech mouse model %d\n", model); 386 } 387 388 if (set_properties) { 389 psmouse->vendor = "Logitech"; 390 psmouse->model = model; 391 392 if (use_ps2pp) { 393 psmouse->protocol_handler = ps2pp_process_byte; 394 psmouse->pktsize = 3; 395 396 if (model_info->kind != PS2PP_KIND_TP3) { 397 psmouse->set_resolution = ps2pp_set_resolution; 398 psmouse->disconnect = ps2pp_disconnect; 399 400 error = device_create_file(&psmouse->ps2dev.serio->dev, 401 &psmouse_attr_smartscroll.dattr); 402 if (error) { 403 printk(KERN_ERR 404 "logips2pp.c: failed to create smartscroll " 405 "sysfs attribute, error: %d\n", error); 406 return -1; 407 } 408 } 409 } 410 411 if (buttons >= 3) 412 __set_bit(BTN_MIDDLE, psmouse->dev->keybit); 413 414 if (model_info) 415 ps2pp_set_model_properties(psmouse, model_info, use_ps2pp); 416 } 417 418 return use_ps2pp ? 0 : -1; 419 } 420 421