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