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 B213x/B2150",
  65                 .matches = {
  66                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
  67                 },
  68         },
  69         {
  70                 .ident = "Zephyr",
  71                 .matches = {
  72                         DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
  73                 },
  74         },
  75         {
  76                 .ident = "CF-18",
  77                 .matches = {
  78                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
  79                 },
  80                 .callback = lifebook_set_serio_phys,
  81                 .driver_data = "isa0060/serio3",
  82         },
  83         {
  84                 .ident = "Panasonic CF-28",
  85                 .matches = {
  86                         DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
  87                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
  88                 },
  89                 .callback = lifebook_set_6byte_proto,
  90         },
  91         {
  92                 .ident = "Panasonic CF-29",
  93                 .matches = {
  94                         DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
  95                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
  96                 },
  97                 .callback = lifebook_set_6byte_proto,
  98         },
  99         {
 100                 .ident = "CF-72",
 101                 .matches = {
 102                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"),
 103                 },
 104                 .callback = lifebook_set_serio_phys,
 105                 .driver_data = "isa0060/serio3",
 106         },
 107         {
 108                 .ident = "Lifebook B142",
 109                 .matches = {
 110                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
 111                 },
 112         },
 113         { }
 114 };
 115
 116 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
 117 {
 118         struct lifebook_data *priv = psmouse->private;
 119         struct input_dev *dev1 = psmouse->dev;
 120         struct input_dev *dev2 = priv ? priv->dev2 : NULL;
 121         unsigned char *packet = psmouse->packet;
 122         int relative_packet = packet[0] & 0x08;
 123
 124         if (relative_packet || !lifebook_use_6byte_proto) {
 125                 if (psmouse->pktcnt != 3)
 126                         return PSMOUSE_GOOD_DATA;
 127         } else {
 128                 switch (psmouse->pktcnt) {
 129                 case 1:
 130                         return (packet[0] & 0xf8) == 0x00 ?
 131                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 132                 case 2:
 133                         return PSMOUSE_GOOD_DATA;
 134                 case 3:
 135                         return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
 136                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 137                 case 4:
 138                         return (packet[3] & 0xf8) == 0xc0 ?
 139                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 140                 case 5:
 141                         return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
 142                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 143                 case 6:
 144                         if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
 145                                 return PSMOUSE_BAD_DATA;
 146                         if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
 147                                 return PSMOUSE_BAD_DATA;
 148                         break; /* report data */
 149                 }
 150         }
 151
 152         if (relative_packet) {
 153                 if (!dev2)
 154                         printk(KERN_WARNING "lifebook.c: got relative packet "
 155                                 "but no relative device set up\n");
 156         } else if (lifebook_use_6byte_proto) {
 157                 input_report_abs(dev1, ABS_X,
 158                                  ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
 159                 input_report_abs(dev1, ABS_Y,
 160                                  4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
 161         } else {
 162                 input_report_abs(dev1, ABS_X,
 163                                  (packet[1] | ((packet[0] & 0x30) << 4)));
 164                 input_report_abs(dev1, ABS_Y,
 165                                  1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
 166         }
 167
 168         input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
 169         input_sync(dev1);
 170
 171         if (dev2) {
 172                 if (relative_packet) {
 173                         input_report_rel(dev2, REL_X,
 174                                 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
 175                         input_report_rel(dev2, REL_Y,
 176                                  -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
 177                 }
 178                 input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
 179                 input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
 180                 input_sync(dev2);
 181         }
 182
 183         return PSMOUSE_FULL_PACKET;
 184 }
 185
 186 static int lifebook_absolute_mode(struct psmouse *psmouse)
 187 {
 188         struct ps2dev *ps2dev = &psmouse->ps2dev;
 189         unsigned char param;
 190
 191         if (psmouse_reset(psmouse))
 192                 return -1;
 193
 194         /*
 195            Enable absolute output -- ps2_command fails always but if
 196            you leave this call out the touchsreen will never send
 197            absolute coordinates
 198         */
 199         param = lifebook_use_6byte_proto ? 0x08 : 0x07;
 200         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
 201
 202         return 0;
 203 }
 204
 205 static void lifebook_relative_mode(struct psmouse *psmouse)
 206 {
 207         struct ps2dev *ps2dev = &psmouse->ps2dev;
 208         unsigned char param = 0x06;
 209
 210         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
 211 }
 212
 213 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
 214 {
 215         static const unsigned char params[] = { 0, 1, 2, 2, 3 };
 216         unsigned char p;
 217
 218         if (resolution == 0 || resolution > 400)
 219                 resolution = 400;
 220
 221         p = params[resolution / 100];
 222         ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
 223         psmouse->resolution = 50 << p;
 224 }
 225
 226 static void lifebook_disconnect(struct psmouse *psmouse)
 227 {
 228         struct lifebook_data *priv = psmouse->private;
 229
 230         psmouse_reset(psmouse);
 231         if (priv) {
 232                 input_unregister_device(priv->dev2);
 233                 kfree(priv);
 234         }
 235         psmouse->private = NULL;
 236 }
 237
 238 int lifebook_detect(struct psmouse *psmouse, int set_properties)
 239 {
 240         if (!dmi_check_system(lifebook_dmi_table))
 241                 return -1;
 242
 243         if (desired_serio_phys &&
 244             strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
 245                 return -1;
 246
 247         if (set_properties) {
 248                 psmouse->vendor = "Fujitsu";
 249                 psmouse->name = "Lifebook TouchScreen";
 250         }
 251
 252         return 0;
 253 }
 254
 255 static int lifebook_create_relative_device(struct psmouse *psmouse)
 256 {
 257         struct input_dev *dev2;
 258         struct lifebook_data *priv;
 259         int error = -ENOMEM;
 260
 261         priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
 262         dev2 = input_allocate_device();
 263         if (!priv || !dev2)
 264                 goto err_out;
 265
 266         priv->dev2 = dev2;
 267         snprintf(priv->phys, sizeof(priv->phys),
 268                  "%s/input1", psmouse->ps2dev.serio->phys);
 269
 270         dev2->phys = priv->phys;
 271         dev2->name = "PS/2 Touchpad";
 272         dev2->id.bustype = BUS_I8042;
 273         dev2->id.vendor  = 0x0002;
 274         dev2->id.product = PSMOUSE_LIFEBOOK;
 275         dev2->id.version = 0x0000;
 276         dev2->dev.parent = &psmouse->ps2dev.serio->dev;
 277
 278         dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
 279         dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
 280         dev2->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
 281                 BIT_MASK(BTN_RIGHT);
 282
 283         error = input_register_device(priv->dev2);
 284         if (error)
 285                 goto err_out;
 286
 287         psmouse->private = priv;
 288         return 0;
 289
 290  err_out:
 291         input_free_device(dev2);
 292         kfree(priv);
 293         return error;
 294 }
 295
 296 int lifebook_init(struct psmouse *psmouse)
 297 {
 298         struct input_dev *dev1 = psmouse->dev;
 299         int max_coord = lifebook_use_6byte_proto ? 4096 : 1024;
 300
 301         if (lifebook_absolute_mode(psmouse))
 302                 return -1;
 303
 304         dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
 305         dev1->relbit[0] = 0;
 306         dev1->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
 307         input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
 308         input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
 309
 310         if (!desired_serio_phys) {
 311                 if (lifebook_create_relative_device(psmouse)) {
 312                         lifebook_relative_mode(psmouse);
 313                         return -1;
 314                 }
 315         }
 316
 317         psmouse->protocol_handler = lifebook_process_byte;
 318         psmouse->set_resolution = lifebook_set_resolution;
 319         psmouse->disconnect = lifebook_disconnect;
 320         psmouse->reconnect  = lifebook_absolute_mode;
 321
 322         psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
 323
 324         /*
 325          * Use packet size = 3 even when using 6-byte protocol because
 326          * that's what POLL will return on Lifebooks (according to spec).
 327          */
 328         psmouse->pktsize = 3;
 329
 330         return 0;
 331 }
 332