drivers/input/mouse/lifebook.c

   1 /*
   2  * Fujitsu B-series Lifebook PS/2 TouchScreen driver
   3  *
   4  * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
   5  * Copyright (c) 2005 Kenan Esau <kenan.esau@conan.de>
   6  *
   7  * TouchScreen detection, absolute mode setting and packet layout is taken from
   8  * Harald Hoyer's description of the device.
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License version 2 as published by
  12  * the Free Software Foundation.
  13  */
  14
  15 #include <linux/input.h>
  16 #include <linux/serio.h>
  17 #include <linux/libps2.h>
  18 #include <linux/dmi.h>
  19
  20 #include "psmouse.h"
  21 #include "lifebook.h"
  22
  23 struct lifebook_data {
  24         struct input_dev *dev2;         /* Relative device */
  25         char phys[32];
  26 };
  27
  28 static const char *desired_serio_phys;
  29
  30 static int lifebook_set_serio_phys(const struct dmi_system_id *d)
  31 {
  32         desired_serio_phys = d->driver_data;
  33         return 0;
  34 }
  35
  36 static unsigned char lifebook_use_6byte_proto;
  37
  38 static int lifebook_set_6byte_proto(const struct dmi_system_id *d)
  39 {
  40         lifebook_use_6byte_proto = 1;
  41         return 0;
  42 }
  43
  44 static const struct dmi_system_id lifebook_dmi_table[] = {
  45         {
  46                 .ident = "FLORA-ie 55mi",
  47                 .matches = {
  48                         DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"),
  49                 },
  50         },
  51         {
  52                 .ident = "LifeBook B",
  53                 .matches = {
  54                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"),
  55                 },
  56         },
  57         {
  58                 .ident = "Lifebook B",
  59                 .matches = {
  60                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
  61                 },
  62         },
  63         {
  64                 .ident = "Lifebook B-2130",
  65                 .matches = {
  66                         DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"),
  67                 },
  68         },
  69         {
  70                 .ident = "Lifebook B213x/B2150",
  71                 .matches = {
  72                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
  73                 },
  74         },
  75         {
  76                 .ident = "Zephyr",
  77                 .matches = {
  78                         DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
  79                 },
  80         },
  81         {
  82                 .ident = "CF-18",
  83                 .matches = {
  84                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
  85                 },
  86                 .callback = lifebook_set_serio_phys,
  87                 .driver_data = "isa0060/serio3",
  88         },
  89         {
  90                 .ident = "Panasonic CF-28",
  91                 .matches = {
  92                         DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
  93                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
  94                 },
  95                 .callback = lifebook_set_6byte_proto,
  96         },
  97         {
  98                 .ident = "Panasonic CF-29",
  99                 .matches = {
 100                         DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
 101                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
 102                 },
 103                 .callback = lifebook_set_6byte_proto,
 104         },
 105         {
 106                 .ident = "CF-72",
 107                 .matches = {
 108                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"),
 109                 },
 110                 .callback = lifebook_set_serio_phys,
 111                 .driver_data = "isa0060/serio3",
 112         },
 113         {
 114                 .ident = "Lifebook B142",
 115                 .matches = {
 116                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
 117                 },
 118         },
 119         { }
 120 };
 121
 122 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
 123 {
 124         struct lifebook_data *priv = psmouse->private;
 125         struct input_dev *dev1 = psmouse->dev;
 126         struct input_dev *dev2 = priv ? priv->dev2 : NULL;
 127         unsigned char *packet = psmouse->packet;
 128         int relative_packet = packet[0] & 0x08;
 129
 130         if (relative_packet || !lifebook_use_6byte_proto) {
 131                 if (psmouse->pktcnt != 3)
 132                         return PSMOUSE_GOOD_DATA;
 133         } else {
 134                 switch (psmouse->pktcnt) {
 135                 case 1:
 136                         return (packet[0] & 0xf8) == 0x00 ?
 137                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 138                 case 2:
 139                         return PSMOUSE_GOOD_DATA;
 140                 case 3:
 141                         return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
 142                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 143                 case 4:
 144                         return (packet[3] & 0xf8) == 0xc0 ?
 145                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 146                 case 5:
 147                         return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
 148                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 149                 case 6:
 150                         if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
 151                                 return PSMOUSE_BAD_DATA;
 152                         if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
 153                                 return PSMOUSE_BAD_DATA;
 154                         break; /* report data */
 155                 }
 156         }
 157
 158         if (relative_packet) {
 159                 if (!dev2)
 160                         printk(KERN_WARNING "lifebook.c: got relative packet "
 161                                 "but no relative device set up\n");
 162         } else if (lifebook_use_6byte_proto) {
 163                 input_report_abs(dev1, ABS_X,
 164                                  ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
 165                 input_report_abs(dev1, ABS_Y,
 166                                  4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
 167         } else {
 168                 input_report_abs(dev1, ABS_X,
 169                                  (packet[1] | ((packet[0] & 0x30) << 4)));
 170                 input_report_abs(dev1, ABS_Y,
 171                                  1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
 172         }
 173
 174         input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
 175         input_sync(dev1);
 176
 177         if (dev2) {
 178                 if (relative_packet) {
 179                         input_report_rel(dev2, REL_X,
 180                                 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
 181                         input_report_rel(dev2, REL_Y,
 182                                  -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
 183                 }
 184                 input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
 185                 input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
 186                 input_sync(dev2);
 187         }
 188
 189         return PSMOUSE_FULL_PACKET;
 190 }
 191
 192 static int lifebook_absolute_mode(struct psmouse *psmouse)
 193 {
 194         struct ps2dev *ps2dev = &psmouse->ps2dev;
 195         unsigned char param;
 196
 197         if (psmouse_reset(psmouse))
 198                 return -1;
 199
 200         /*
 201            Enable absolute output -- ps2_command fails always but if
 202            you leave this call out the touchsreen will never send
 203            absolute coordinates
 204         */
 205         param = lifebook_use_6byte_proto ? 0x08 : 0x07;
 206         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
 207
 208         return 0;
 209 }
 210
 211 static void lifebook_relative_mode(struct psmouse *psmouse)
 212 {
 213         struct ps2dev *ps2dev = &psmouse->ps2dev;
 214         unsigned char param = 0x06;
 215
 216         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
 217 }
 218
 219 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
 220 {
 221         static const unsigned char params[] = { 0, 1, 2, 2, 3 };
 222         unsigned char p;
 223
 224         if (resolution == 0 || resolution > 400)
 225                 resolution = 400;
 226
 227         p = params[resolution / 100];
 228         ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
 229         psmouse->resolution = 50 << p;
 230 }
 231
 232 static void lifebook_disconnect(struct psmouse *psmouse)
 233 {
 234         struct lifebook_data *priv = psmouse->private;
 235
 236         psmouse_reset(psmouse);
 237         if (priv) {
 238                 input_unregister_device(priv->dev2);
 239                 kfree(priv);
 240         }
 241         psmouse->private = NULL;
 242 }
 243
 244 int lifebook_detect(struct psmouse *psmouse, int set_properties)
 245 {
 246         if (!dmi_check_system(lifebook_dmi_table))
 247                 return -1;
 248
 249         if (desired_serio_phys &&
 250             strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
 251                 return -1;
 252
 253         if (set_properties) {
 254                 psmouse->vendor = "Fujitsu";
 255                 psmouse->name = "Lifebook TouchScreen";
 256         }
 257
 258         return 0;
 259 }
 260
 261 static int lifebook_create_relative_device(struct psmouse *psmouse)
 262 {
 263         struct input_dev *dev2;
 264         struct lifebook_data *priv;
 265         int error = -ENOMEM;
 266
 267         priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
 268         dev2 = input_allocate_device();
 269         if (!priv || !dev2)
 270                 goto err_out;
 271
 272         priv->dev2 = dev2;
 273         snprintf(priv->phys, sizeof(priv->phys),
 274                  "%s/input1", psmouse->ps2dev.serio->phys);
 275
 276         dev2->phys = priv->phys;
 277         dev2->name = "PS/2 Touchpad";
 278         dev2->id.bustype = BUS_I8042;
 279         dev2->id.vendor  = 0x0002;
 280         dev2->id.product = PSMOUSE_LIFEBOOK;
 281         dev2->id.version = 0x0000;
 282         dev2->dev.parent = &psmouse->ps2dev.serio->dev;
 283
 284         dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
 285         dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
 286         dev2->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
 287                 BIT_MASK(BTN_RIGHT);
 288
 289         error = input_register_device(priv->dev2);
 290         if (error)
 291                 goto err_out;
 292
 293         psmouse->private = priv;
 294         return 0;
 295
 296  err_out:
 297         input_free_device(dev2);
 298         kfree(priv);
 299         return error;
 300 }
 301
 302 int lifebook_init(struct psmouse *psmouse)
 303 {
 304         struct input_dev *dev1 = psmouse->dev;
 305         int max_coord = lifebook_use_6byte_proto ? 4096 : 1024;
 306
 307         if (lifebook_absolute_mode(psmouse))
 308                 return -1;
 309
 310         dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
 311         dev1->relbit[0] = 0;
 312         dev1->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
 313         input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
 314         input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
 315
 316         if (!desired_serio_phys) {
 317                 if (lifebook_create_relative_device(psmouse)) {
 318                         lifebook_relative_mode(psmouse);
 319                         return -1;
 320                 }
 321         }
 322
 323         psmouse->protocol_handler = lifebook_process_byte;
 324         psmouse->set_resolution = lifebook_set_resolution;
 325         psmouse->disconnect = lifebook_disconnect;
 326         psmouse->reconnect  = lifebook_absolute_mode;
 327
 328         psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
 329
 330         /*
 331          * Use packet size = 3 even when using 6-byte protocol because
 332          * that's what POLL will return on Lifebooks (according to spec).
 333          */
 334         psmouse->pktsize = 3;
 335
 336         return 0;
 337 }
 338