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 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, &param, 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         struct input_dev *input_dev = psmouse->dev;
 261
 262         if (model_info->features & PS2PP_SIDE_BTN)
 263                 set_bit(BTN_SIDE, input_dev->keybit);
 264
 265         if (model_info->features & PS2PP_EXTRA_BTN)
 266                 set_bit(BTN_EXTRA, input_dev->keybit);
 267
 268         if (model_info->features & PS2PP_TASK_BTN)
 269                 set_bit(BTN_TASK, input_dev->keybit);
 270
 271         if (model_info->features & PS2PP_NAV_BTN) {
 272                 set_bit(BTN_FORWARD, input_dev->keybit);
 273                 set_bit(BTN_BACK, input_dev->keybit);
 274         }
 275
 276         if (model_info->features & PS2PP_WHEEL)
 277                 set_bit(REL_WHEEL, input_dev->relbit);
 278
 279         if (model_info->features & PS2PP_HWHEEL)
 280                 set_bit(REL_HWHEEL, input_dev->relbit);
 281
 282         switch (model_info->kind) {
 283                 case PS2PP_KIND_WHEEL:
 284                         psmouse->name = "Wheel Mouse";
 285                         break;
 286
 287                 case PS2PP_KIND_MX:
 288                         psmouse->name = "MX Mouse";
 289                         break;
 290
 291                 case PS2PP_KIND_TP3:
 292                         psmouse->name = "TouchPad 3";
 293                         break;
 294
 295                 default:
 296                         /*
 297                          * Set name to "Mouse" only when using PS2++,
 298                          * otherwise let other protocols define suitable
 299                          * name
 300                          */
 301                         if (using_ps2pp)
 302                                 psmouse->name = "Mouse";
 303                         break;
 304         }
 305 }
 306
 307
 308 /*
 309  * Logitech magic init. Detect whether the mouse is a Logitech one
 310  * and its exact model and try turning on extended protocol for ones
 311  * that support it.
 312  */
 313
 314 int ps2pp_init(struct psmouse *psmouse, int set_properties)
 315 {
 316         struct ps2dev *ps2dev = &psmouse->ps2dev;
 317         unsigned char param[4];
 318         unsigned char model, buttons;
 319         struct ps2pp_info *model_info;
 320         int use_ps2pp = 0;
 321
 322         param[0] = 0;
 323         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
 324         ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE11);
 325         ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE11);
 326         ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE11);
 327         param[1] = 0;
 328         ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
 329
 330         if (!param[1])
 331                 return -1;
 332
 333         model = ((param[0] >> 4) & 0x07) | ((param[0] << 3) & 0x78);
 334         buttons = param[1];
 335
 336         if ((model_info = get_model_info(model)) != NULL) {
 337
 338 /*
 339  * Do Logitech PS2++ / PS2T++ magic init.
 340  */
 341                 if (model == 97) { /* Touch Pad 3 */
 342
 343                         /* Unprotect RAM */
 344                         param[0] = 0x11; param[1] = 0x04; param[2] = 0x68;
 345                         ps2_command(ps2dev, param, 0x30d1);
 346                         /* Enable features */
 347                         param[0] = 0x11; param[1] = 0x05; param[2] = 0x0b;
 348                         ps2_command(ps2dev, param, 0x30d1);
 349                         /* Enable PS2++ */
 350                         param[0] = 0x11; param[1] = 0x09; param[2] = 0xc3;
 351                         ps2_command(ps2dev, param, 0x30d1);
 352
 353                         param[0] = 0;
 354                         if (!ps2_command(ps2dev, param, 0x13d1) &&
 355                             param[0] == 0x06 && param[1] == 0x00 && param[2] == 0x14) {
 356                                 use_ps2pp = 1;
 357                         }
 358
 359                 } else {
 360
 361                         param[0] = param[1] = param[2] = 0;
 362                         ps2pp_cmd(psmouse, param, 0x39); /* Magic knock */
 363                         ps2pp_cmd(psmouse, param, 0xDB);
 364
 365                         if ((param[0] & 0x78) == 0x48 &&
 366                             (param[1] & 0xf3) == 0xc2 &&
 367                             (param[2] & 0x03) == ((param[1] >> 2) & 3)) {
 368                                 ps2pp_set_smartscroll(psmouse, psmouse->smartscroll);
 369                                 use_ps2pp = 1;
 370                         }
 371                 }
 372         }
 373
 374         if (set_properties) {
 375                 psmouse->vendor = "Logitech";
 376                 psmouse->model = model;
 377
 378                 if (use_ps2pp) {
 379                         psmouse->protocol_handler = ps2pp_process_byte;
 380                         psmouse->pktsize = 3;
 381
 382                         if (model_info->kind != PS2PP_KIND_TP3) {
 383                                 psmouse->set_resolution = ps2pp_set_resolution;
 384                                 psmouse->disconnect = ps2pp_disconnect;
 385
 386                                 device_create_file(&psmouse->ps2dev.serio->dev,
 387                                                    &psmouse_attr_smartscroll.dattr);
 388                         }
 389                 }
 390
 391                 if (buttons < 3)
 392                         clear_bit(BTN_MIDDLE, psmouse->dev->keybit);
 393
 394                 if (model_info)
 395                         ps2pp_set_model_properties(psmouse, model_info, use_ps2pp);
 396         }
 397
 398         return use_ps2pp ? 0 : -1;
 399 }
 400