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(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(struct dmi_system_id *d)
  39 {
  40         lifebook_use_6byte_proto = 1;
  41         return 0;
  42 }
  43
  44 static 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 = "Lifebook B142",
 101                 .matches = {
 102                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
 103                 },
 104         },
 105         { }
 106 };
 107
 108 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
 109 {
 110         struct lifebook_data *priv = psmouse->private;
 111         struct input_dev *dev1 = psmouse->dev;
 112         struct input_dev *dev2 = priv->dev2;
 113         unsigned char *packet = psmouse->packet;
 114         int relative_packet = packet[0] & 0x08;
 115
 116         if (relative_packet || !lifebook_use_6byte_proto) {
 117                 if (psmouse->pktcnt != 3)
 118                         return PSMOUSE_GOOD_DATA;
 119         } else {
 120                 switch (psmouse->pktcnt) {
 121                 case 1:
 122                         return (packet[0] & 0xf8) == 0x00 ?
 123                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 124                 case 2:
 125                         return PSMOUSE_GOOD_DATA;
 126                 case 3:
 127                         return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
 128                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 129                 case 4:
 130                         return (packet[3] & 0xf8) == 0xc0 ?
 131                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 132                 case 5:
 133                         return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
 134                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 135                 case 6:
 136                         if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
 137                                 return PSMOUSE_BAD_DATA;
 138                         if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
 139                                 return PSMOUSE_BAD_DATA;
 140                         break; /* report data */
 141                 }
 142         }
 143
 144         if (relative_packet) {
 145                 if (!dev2)
 146                         printk(KERN_WARNING "lifebook.c: got relative packet "
 147                                 "but no relative device set up\n");
 148         } else if (lifebook_use_6byte_proto) {
 149                 input_report_abs(dev1, ABS_X,
 150                                  ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
 151                 input_report_abs(dev1, ABS_Y,
 152                                  4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
 153         } else {
 154                 input_report_abs(dev1, ABS_X,
 155                                  (packet[1] | ((packet[0] & 0x30) << 4)));
 156                 input_report_abs(dev1, ABS_Y,
 157                                  1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
 158         }
 159
 160         input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
 161         input_sync(dev1);
 162
 163         if (dev2) {
 164                 if (relative_packet) {
 165                         input_report_rel(dev2, REL_X,
 166                                 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
 167                         input_report_rel(dev2, REL_Y,
 168                                  -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
 169                 }
 170                 input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
 171                 input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
 172                 input_sync(dev2);
 173         }
 174
 175         return PSMOUSE_FULL_PACKET;
 176 }
 177
 178 static int lifebook_absolute_mode(struct psmouse *psmouse)
 179 {
 180         struct ps2dev *ps2dev = &psmouse->ps2dev;
 181         unsigned char param;
 182
 183         if (psmouse_reset(psmouse))
 184                 return -1;
 185
 186         /*
 187            Enable absolute output -- ps2_command fails always but if
 188            you leave this call out the touchsreen will never send
 189            absolute coordinates
 190         */
 191         param = lifebook_use_6byte_proto ? 0x08 : 0x07;
 192         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
 193
 194         return 0;
 195 }
 196
 197 static void lifebook_relative_mode(struct psmouse *psmouse)
 198 {
 199         struct ps2dev *ps2dev = &psmouse->ps2dev;
 200         unsigned char param = 0x06;
 201
 202         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
 203 }
 204
 205 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
 206 {
 207         static const unsigned char params[] = { 0, 1, 2, 2, 3 };
 208         unsigned char p;
 209
 210         if (resolution == 0 || resolution > 400)
 211                 resolution = 400;
 212
 213         p = params[resolution / 100];
 214         ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
 215         psmouse->resolution = 50 << p;
 216 }
 217
 218 static void lifebook_disconnect(struct psmouse *psmouse)
 219 {
 220         psmouse_reset(psmouse);
 221         kfree(psmouse->private);
 222         psmouse->private = NULL;
 223 }
 224
 225 int lifebook_detect(struct psmouse *psmouse, int set_properties)
 226 {
 227         if (!dmi_check_system(lifebook_dmi_table))
 228                 return -1;
 229
 230         if (desired_serio_phys &&
 231             strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
 232                 return -1;
 233
 234         if (set_properties) {
 235                 psmouse->vendor = "Fujitsu";
 236                 psmouse->name = "Lifebook TouchScreen";
 237         }
 238
 239         return 0;
 240 }
 241
 242 static int lifebook_create_relative_device(struct psmouse *psmouse)
 243 {
 244         struct input_dev *dev2;
 245         struct lifebook_data *priv;
 246         int error = -ENOMEM;
 247
 248         priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
 249         dev2 = input_allocate_device();
 250         if (!priv || !dev2)
 251                 goto err_out;
 252
 253         priv->dev2 = dev2;
 254         snprintf(priv->phys, sizeof(priv->phys),
 255                  "%s/input1", psmouse->ps2dev.serio->phys);
 256
 257         dev2->phys = priv->phys;
 258         dev2->name = "PS/2 Touchpad";
 259         dev2->id.bustype = BUS_I8042;
 260         dev2->id.vendor  = 0x0002;
 261         dev2->id.product = PSMOUSE_LIFEBOOK;
 262         dev2->id.version = 0x0000;
 263         dev2->dev.parent = &psmouse->ps2dev.serio->dev;
 264
 265         dev2->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
 266         dev2->relbit[LONG(REL_X)] = BIT(REL_X) | BIT(REL_Y);
 267         dev2->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT);
 268
 269         error = input_register_device(priv->dev2);
 270         if (error)
 271                 goto err_out;
 272
 273         psmouse->private = priv;
 274         return 0;
 275
 276  err_out:
 277         input_free_device(dev2);
 278         kfree(priv);
 279         return error;
 280 }
 281
 282 int lifebook_init(struct psmouse *psmouse)
 283 {
 284         struct input_dev *dev1 = psmouse->dev;
 285         int max_coord = lifebook_use_6byte_proto ? 1024 : 4096;
 286
 287         if (lifebook_absolute_mode(psmouse))
 288                 return -1;
 289
 290         dev1->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY);
 291         dev1->relbit[0] = 0;
 292         dev1->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
 293         input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
 294         input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
 295
 296         if (!desired_serio_phys) {
 297                 if (lifebook_create_relative_device(psmouse)) {
 298                         lifebook_relative_mode(psmouse);
 299                         return -1;
 300                 }
 301         }
 302
 303         psmouse->protocol_handler = lifebook_process_byte;
 304         psmouse->set_resolution = lifebook_set_resolution;
 305         psmouse->disconnect = lifebook_disconnect;
 306         psmouse->reconnect  = lifebook_absolute_mode;
 307
 308         psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
 309
 310         /*
 311          * Use packet size = 3 even when using 6-byte protocol because
 312          * that's what POLL will return on Lifebooks (according to spec).
 313          */
 314         psmouse->pktsize = 3;
 315
 316         return 0;
 317 }
 318