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 #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                 default:
  86                         psmouse_dbg(psmouse,
  87                                     "Received PS2++ packet #%x, but don't know how to handle.\n",
  88                                     (packet[1] >> 4) | (packet[0] & 0x30));
  89                         break;
  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, &param, 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                 psmouse_warn(psmouse, "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                                         psmouse_err(psmouse,
 404                                                     "failed to create smartscroll sysfs attribute, error: %d\n",
 405                                                     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