drivers/input/mouse/logips2pp.c

   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 psmouse_attr_show_smartscroll(struct psmouse *psmouse, char *buf)
 154 {
 155         return sprintf(buf, "%d\n", psmouse->smartscroll ? 1 : 0);
 156 }
 157
 158 static ssize_t psmouse_attr_set_smartscroll(struct psmouse *psmouse, 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);
 173
 174 /*
 175  * Support 800 dpi resolution _only_ if the user wants it (there are good
 176  * reasons to not use it even if the mouse supports it, and of course there are
 177  * also good reasons to use it, let the user decide).
 178  */
 179
 180 static void ps2pp_set_resolution(struct psmouse *psmouse, unsigned int resolution)
 181 {
 182         if (resolution > 400) {
 183                 struct ps2dev *ps2dev = &psmouse->ps2dev;
 184                 unsigned char param = 3;
 185
 186                 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
 187                 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
 188                 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
 189                 ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
 190                 psmouse->resolution = 800;
 191         } else
 192                 psmouse_set_resolution(psmouse, resolution);
 193 }
 194
 195 static void ps2pp_disconnect(struct psmouse *psmouse)
 196 {
 197         device_remove_file(&psmouse->ps2dev.serio->dev, &psmouse_attr_smartscroll);
 198 }
 199
 200 static struct ps2pp_info *get_model_info(unsigned char model)
 201 {
 202         static struct ps2pp_info ps2pp_list[] = {
 203                 { 12,   0,                      PS2PP_SIDE_BTN},
 204                 { 13,   0,                      0 },
 205                 { 40,   0,                      PS2PP_SIDE_BTN },
 206                 { 41,   0,                      PS2PP_SIDE_BTN },
 207                 { 42,   0,                      PS2PP_SIDE_BTN },
 208                 { 43,   0,                      PS2PP_SIDE_BTN },
 209                 { 50,   0,                      0 },
 210                 { 51,   0,                      0 },
 211                 { 52,   PS2PP_KIND_WHEEL,       PS2PP_SIDE_BTN | PS2PP_WHEEL },
 212                 { 53,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
 213                 { 61,   PS2PP_KIND_MX,
 214                                 PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |
 215                                 PS2PP_EXTRA_BTN | PS2PP_NAV_BTN },      /* MX700 */
 216                 { 73,   0,                      PS2PP_SIDE_BTN },
 217                 { 75,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
 218                 { 76,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
 219                 { 80,   PS2PP_KIND_WHEEL,       PS2PP_SIDE_BTN | PS2PP_WHEEL },
 220                 { 81,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
 221                 { 83,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
 222                 { 88,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
 223                 { 96,   0,                      0 },
 224                 { 97,   PS2PP_KIND_TP3,         PS2PP_WHEEL | PS2PP_HWHEEL },
 225                 { 100,  PS2PP_KIND_MX,
 226                                 PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |
 227                                 PS2PP_EXTRA_BTN | PS2PP_NAV_BTN },      /* MX510 */
 228                 { 112,  PS2PP_KIND_MX,
 229                                 PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |
 230                                 PS2PP_EXTRA_BTN | PS2PP_NAV_BTN },      /* MX500 */
 231                 { 114,  PS2PP_KIND_MX,
 232                                 PS2PP_WHEEL | PS2PP_SIDE_BTN |
 233                                 PS2PP_TASK_BTN | PS2PP_EXTRA_BTN },     /* M310 */
 234                 { }
 235         };
 236         int i;
 237
 238         for (i = 0; ps2pp_list[i].model; i++)
 239                 if (model == ps2pp_list[i].model)
 240                         return &ps2pp_list[i];
 241         return NULL;
 242 }
 243
 244 /*
 245  * Set up input device's properties based on the detected mouse model.
 246  */
 247
 248 static void ps2pp_set_model_properties(struct psmouse *psmouse, struct ps2pp_info *model_info,
 249                                        int using_ps2pp)
 250 {
 251         if (model_info->features & PS2PP_SIDE_BTN)
 252                 set_bit(BTN_SIDE, psmouse->dev.keybit);
 253
 254         if (model_info->features & PS2PP_EXTRA_BTN)
 255                 set_bit(BTN_EXTRA, psmouse->dev.keybit);
 256
 257         if (model_info->features & PS2PP_TASK_BTN)
 258                 set_bit(BTN_TASK, psmouse->dev.keybit);
 259
 260         if (model_info->features & PS2PP_NAV_BTN) {
 261                 set_bit(BTN_FORWARD, psmouse->dev.keybit);
 262                 set_bit(BTN_BACK, psmouse->dev.keybit);
 263         }
 264
 265         if (model_info->features & PS2PP_WHEEL)
 266                 set_bit(REL_WHEEL, psmouse->dev.relbit);
 267
 268         if (model_info->features & PS2PP_HWHEEL)
 269                 set_bit(REL_HWHEEL, psmouse->dev.relbit);
 270
 271         switch (model_info->kind) {
 272                 case PS2PP_KIND_WHEEL:
 273                         psmouse->name = "Wheel Mouse";
 274                         break;
 275
 276                 case PS2PP_KIND_MX:
 277                         psmouse->name = "MX Mouse";
 278                         break;
 279
 280                 case PS2PP_KIND_TP3:
 281                         psmouse->name = "TouchPad 3";
 282                         break;
 283
 284                 default:
 285                         /*
 286                          * Set name to "Mouse" only when using PS2++,
 287                          * otherwise let other protocols define suitable
 288                          * name
 289                          */
 290                         if (using_ps2pp)
 291                                 psmouse->name = "Mouse";
 292                         break;
 293         }
 294 }
 295
 296
 297 /*
 298  * Logitech magic init. Detect whether the mouse is a Logitech one
 299  * and its exact model and try turning on extended protocol for ones
 300  * that support it.
 301  */
 302
 303 int ps2pp_init(struct psmouse *psmouse, int set_properties)
 304 {
 305         struct ps2dev *ps2dev = &psmouse->ps2dev;
 306         unsigned char param[4];
 307         unsigned char model, buttons;
 308         struct ps2pp_info *model_info;
 309         int use_ps2pp = 0;
 310
 311         param[0] = 0;
 312         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
 313         ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE11);
 314         ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE11);
 315         ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE11);
 316         param[1] = 0;
 317         ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
 318
 319         if (!param[1])
 320                 return -1;
 321
 322         model = ((param[0] >> 4) & 0x07) | ((param[0] << 3) & 0x78);
 323         buttons = param[1];
 324
 325         if ((model_info = get_model_info(model)) != NULL) {
 326
 327 /*
 328  * Do Logitech PS2++ / PS2T++ magic init.
 329  */
 330                 if (model == 97) { /* Touch Pad 3 */
 331
 332                         /* Unprotect RAM */
 333                         param[0] = 0x11; param[1] = 0x04; param[2] = 0x68;
 334                         ps2_command(ps2dev, param, 0x30d1);
 335                         /* Enable features */
 336                         param[0] = 0x11; param[1] = 0x05; param[2] = 0x0b;
 337                         ps2_command(ps2dev, param, 0x30d1);
 338                         /* Enable PS2++ */
 339                         param[0] = 0x11; param[1] = 0x09; param[2] = 0xc3;
 340                         ps2_command(ps2dev, param, 0x30d1);
 341
 342                         param[0] = 0;
 343                         if (!ps2_command(ps2dev, param, 0x13d1) &&
 344                             param[0] == 0x06 && param[1] == 0x00 && param[2] == 0x14) {
 345                                 use_ps2pp = 1;
 346                         }
 347
 348                 } else {
 349
 350                         param[0] = param[1] = param[2] = 0;
 351                         ps2pp_cmd(psmouse, param, 0x39); /* Magic knock */
 352                         ps2pp_cmd(psmouse, param, 0xDB);
 353
 354                         if ((param[0] & 0x78) == 0x48 &&
 355                             (param[1] & 0xf3) == 0xc2 &&
 356                             (param[2] & 0x03) == ((param[1] >> 2) & 3)) {
 357                                 ps2pp_set_smartscroll(psmouse, psmouse->smartscroll);
 358                                 use_ps2pp = 1;
 359                         }
 360                 }
 361         }
 362
 363         if (set_properties) {
 364                 psmouse->vendor = "Logitech";
 365                 psmouse->model = model;
 366
 367                 if (use_ps2pp) {
 368                         psmouse->protocol_handler = ps2pp_process_byte;
 369                         psmouse->pktsize = 3;
 370
 371                         if (model_info->kind != PS2PP_KIND_TP3) {
 372                                 psmouse->set_resolution = ps2pp_set_resolution;
 373                                 psmouse->disconnect = ps2pp_disconnect;
 374
 375                                 device_create_file(&psmouse->ps2dev.serio->dev, &psmouse_attr_smartscroll);
 376                         }
 377                 }
 378
 379                 if (buttons < 3)
 380                         clear_bit(BTN_MIDDLE, psmouse->dev.keybit);
 381                 if (buttons < 2)
 382                         clear_bit(BTN_RIGHT, psmouse->dev.keybit);
 383
 384                 if (model_info)
 385                         ps2pp_set_model_properties(psmouse, model_info, use_ps2pp);
 386         }
 387
 388         return use_ps2pp ? 0 : -1;
 389 }
 390