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 bool lifebook_use_6byte_proto;
  37
  38 static int lifebook_set_6byte_proto(const struct dmi_system_id *d)
  39 {
  40         lifebook_use_6byte_proto = true;
  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         bool 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 {
 163                 if (lifebook_use_6byte_proto) {
 164                         input_report_abs(dev1, ABS_X,
 165                                 ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
 166                         input_report_abs(dev1, ABS_Y,
 167                                 4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
 168                 } else {
 169                         input_report_abs(dev1, ABS_X,
 170                                 (packet[1] | ((packet[0] & 0x30) << 4)));
 171                         input_report_abs(dev1, ABS_Y,
 172                                 1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
 173                 }
 174                 input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
 175                 input_sync(dev1);
 176         }
 177
 178         if (dev2) {
 179                 if (relative_packet) {
 180                         input_report_rel(dev2, REL_X,
 181                                 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
 182                         input_report_rel(dev2, REL_Y,
 183                                  -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
 184                 }
 185                 input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
 186                 input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
 187                 input_sync(dev2);
 188         }
 189
 190         return PSMOUSE_FULL_PACKET;
 191 }
 192
 193 static int lifebook_absolute_mode(struct psmouse *psmouse)
 194 {
 195         struct ps2dev *ps2dev = &psmouse->ps2dev;
 196         unsigned char param;
 197
 198         if (psmouse_reset(psmouse))
 199                 return -1;
 200
 201         /*
 202            Enable absolute output -- ps2_command fails always but if
 203            you leave this call out the touchsreen will never send
 204            absolute coordinates
 205         */
 206         param = lifebook_use_6byte_proto ? 0x08 : 0x07;
 207         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
 208
 209         return 0;
 210 }
 211
 212 static void lifebook_relative_mode(struct psmouse *psmouse)
 213 {
 214         struct ps2dev *ps2dev = &psmouse->ps2dev;
 215         unsigned char param = 0x06;
 216
 217         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
 218 }
 219
 220 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
 221 {
 222         static const unsigned char params[] = { 0, 1, 2, 2, 3 };
 223         unsigned char p;
 224
 225         if (resolution == 0 || resolution > 400)
 226                 resolution = 400;
 227
 228         p = params[resolution / 100];
 229         ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
 230         psmouse->resolution = 50 << p;
 231 }
 232
 233 static void lifebook_disconnect(struct psmouse *psmouse)
 234 {
 235         struct lifebook_data *priv = psmouse->private;
 236
 237         psmouse_reset(psmouse);
 238         if (priv) {
 239                 input_unregister_device(priv->dev2);
 240                 kfree(priv);
 241         }
 242         psmouse->private = NULL;
 243 }
 244
 245 int lifebook_detect(struct psmouse *psmouse, bool set_properties)
 246 {
 247         if (!dmi_check_system(lifebook_dmi_table))
 248                 return -1;
 249
 250         if (desired_serio_phys &&
 251             strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
 252                 return -1;
 253
 254         if (set_properties) {
 255                 psmouse->vendor = "Fujitsu";
 256                 psmouse->name = "Lifebook TouchScreen";
 257         }
 258
 259         return 0;
 260 }
 261
 262 static int lifebook_create_relative_device(struct psmouse *psmouse)
 263 {
 264         struct input_dev *dev2;
 265         struct lifebook_data *priv;
 266         int error = -ENOMEM;
 267
 268         priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
 269         dev2 = input_allocate_device();
 270         if (!priv || !dev2)
 271                 goto err_out;
 272
 273         priv->dev2 = dev2;
 274         snprintf(priv->phys, sizeof(priv->phys),
 275                  "%s/input1", psmouse->ps2dev.serio->phys);
 276
 277         dev2->phys = priv->phys;
 278         dev2->name = "PS/2 Touchpad";
 279         dev2->id.bustype = BUS_I8042;
 280         dev2->id.vendor  = 0x0002;
 281         dev2->id.product = PSMOUSE_LIFEBOOK;
 282         dev2->id.version = 0x0000;
 283         dev2->dev.parent = &psmouse->ps2dev.serio->dev;
 284
 285         dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
 286         dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
 287         dev2->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
 288                 BIT_MASK(BTN_RIGHT);
 289
 290         error = input_register_device(priv->dev2);
 291         if (error)
 292                 goto err_out;
 293
 294         psmouse->private = priv;
 295         return 0;
 296
 297  err_out:
 298         input_free_device(dev2);
 299         kfree(priv);
 300         return error;
 301 }
 302
 303 int lifebook_init(struct psmouse *psmouse)
 304 {
 305         struct input_dev *dev1 = psmouse->dev;
 306         int max_coord = lifebook_use_6byte_proto ? 4096 : 1024;
 307
 308         if (lifebook_absolute_mode(psmouse))
 309                 return -1;
 310
 311         dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
 312         dev1->relbit[0] = 0;
 313         dev1->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
 314         input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
 315         input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
 316
 317         if (!desired_serio_phys) {
 318                 if (lifebook_create_relative_device(psmouse)) {
 319                         lifebook_relative_mode(psmouse);
 320                         return -1;
 321                 }
 322         }
 323
 324         psmouse->protocol_handler = lifebook_process_byte;
 325         psmouse->set_resolution = lifebook_set_resolution;
 326         psmouse->disconnect = lifebook_disconnect;
 327         psmouse->reconnect  = lifebook_absolute_mode;
 328
 329         psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
 330
 331         /*
 332          * Use packet size = 3 even when using 6-byte protocol because
 333          * that's what POLL will return on Lifebooks (according to spec).
 334          */
 335         psmouse->pktsize = 3;
 336
 337         return 0;
 338 }
 339