LXR linux/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
  32struct ps2pp_info {
  33        u8 model;
  34        u8 kind;
  35        u16 features;
  36};
  37
  38/*
  39 * Process a PS2++ or PS2T++ packet.
  40 */
  41
  42static 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
 114static 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
 133static 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
 149static 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
 155static 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
 168PSMOUSE_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
 177static 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
 192static void ps2pp_disconnect(struct psmouse *psmouse)
 193{
 194        device_remove_file(&psmouse->ps2dev.serio->dev, &psmouse_attr_smartscroll.dattr);
 195}
 196
 197static 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        printk(KERN_WARNING "logips2pp: Detected unknown logitech mouse model %d\n", model);
 254        return NULL;
 255}
 256
 257/*
 258 * Set up input device's properties based on the detected mouse model.
 259 */
 260
 261static void ps2pp_set_model_properties(struct psmouse *psmouse,
 262                                       const struct ps2pp_info *model_info,
 263                                       bool using_ps2pp)
 264{
 265        struct input_dev *input_dev = psmouse->dev;
 266
 267        if (model_info->features & PS2PP_SIDE_BTN)
 268                __set_bit(BTN_SIDE, input_dev->keybit);
 269
 270        if (model_info->features & PS2PP_EXTRA_BTN)
 271                __set_bit(BTN_EXTRA, input_dev->keybit);
 272
 273        if (model_info->features & PS2PP_TASK_BTN)
 274                __set_bit(BTN_TASK, input_dev->keybit);
 275
 276        if (model_info->features & PS2PP_NAV_BTN) {
 277                __set_bit(BTN_FORWARD, input_dev->keybit);
 278                __set_bit(BTN_BACK, input_dev->keybit);
 279        }
 280
 281        if (model_info->features & PS2PP_WHEEL)
 282                __set_bit(REL_WHEEL, input_dev->relbit);
 283
 284        if (model_info->features & PS2PP_HWHEEL)
 285                __set_bit(REL_HWHEEL, input_dev->relbit);
 286
 287        switch (model_info->kind) {
 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
 323int 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        if ((model_info = get_model_info(model)) != NULL) {
 347
 348/*
 349 * Do Logitech PS2++ / PS2T++ magic init.
 350 */
 351                if (model_info->kind == PS2PP_KIND_TP3) { /* Touch Pad 3 */
 352
 353                        /* Unprotect RAM */
 354                        param[0] = 0x11; param[1] = 0x04; param[2] = 0x68;
 355                        ps2_command(ps2dev, param, 0x30d1);
 356                        /* Enable features */
 357                        param[0] = 0x11; param[1] = 0x05; param[2] = 0x0b;
 358                        ps2_command(ps2dev, param, 0x30d1);
 359                        /* Enable PS2++ */
 360                        param[0] = 0x11; param[1] = 0x09; param[2] = 0xc3;
 361                        ps2_command(ps2dev, param, 0x30d1);
 362
 363                        param[0] = 0;
 364                        if (!ps2_command(ps2dev, param, 0x13d1) &&
 365                            param[0] == 0x06 && param[1] == 0x00 && param[2] == 0x14) {
 366                                use_ps2pp = true;
 367                        }
 368
 369                } else {
 370
 371                        param[0] = param[1] = param[2] = 0;
 372                        ps2pp_cmd(psmouse, param, 0x39); /* Magic knock */
 373                        ps2pp_cmd(psmouse, param, 0xDB);
 374
 375                        if ((param[0] & 0x78) == 0x48 &&
 376                            (param[1] & 0xf3) == 0xc2 &&
 377                            (param[2] & 0x03) == ((param[1] >> 2) & 3)) {
 378                                ps2pp_set_smartscroll(psmouse, false);
 379                                use_ps2pp = true;
 380                        }
 381                }
 382        }
 383
 384        if (set_properties) {
 385                psmouse->vendor = "Logitech";
 386                psmouse->model = model;
 387
 388                if (use_ps2pp) {
 389                        psmouse->protocol_handler = ps2pp_process_byte;
 390                        psmouse->pktsize = 3;
 391
 392                        if (model_info->kind != PS2PP_KIND_TP3) {
 393                                psmouse->set_resolution = ps2pp_set_resolution;
 394                                psmouse->disconnect = ps2pp_disconnect;
 395
 396                                error = device_create_file(&psmouse->ps2dev.serio->dev,
 397                                                           &psmouse_attr_smartscroll.dattr);
 398                                if (error) {
 399                                        printk(KERN_ERR
 400                                                "logips2pp.c: failed to create smartscroll "
 401                                                "sysfs attribute, error: %d\n", error);
 402                                        return -1;
 403                                }
 404                        }
 405                }
 406
 407                if (buttons < 3)
 408                        __clear_bit(BTN_MIDDLE, psmouse->dev->keybit);
 409
 410                if (model_info)
 411                        ps2pp_set_model_properties(psmouse, model_info, use_ps2pp);
 412        }
 413
 414        return use_ps2pp ? 0 : -1;
 415}
 416
 417