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 bool lifebook_present;
  29
  30 static const char *desired_serio_phys;
  31
  32 static int lifebook_limit_serio3(const struct dmi_system_id *d)
  33 {
  34         desired_serio_phys = "isa0060/serio3";
  35         return 0;
  36 }
  37
  38 static bool lifebook_use_6byte_proto;
  39
  40 static int lifebook_set_6byte_proto(const struct dmi_system_id *d)
  41 {
  42         lifebook_use_6byte_proto = true;
  43         return 0;
  44 }
  45
  46 static const struct dmi_system_id __initconst lifebook_dmi_table[] = {
  47         {
  48                 /* FLORA-ie 55mi */
  49                 .matches = {
  50                         DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"),
  51                 },
  52         },
  53         {
  54                 /* LifeBook B */
  55                 .matches = {
  56                         DMI_MATCH(DMI_PRODUCT_NAME, "Lifebook B Series"),
  57                 },
  58         },
  59         {
  60                 /* LifeBook B */
  61                 .matches = {
  62                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"),
  63                 },
  64         },
  65         {
  66                 /* Lifebook B */
  67                 .matches = {
  68                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
  69                 },
  70         },
  71         {
  72                 /* Lifebook B-2130 */
  73                 .matches = {
  74                         DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"),
  75                 },
  76         },
  77         {
  78                 /* Lifebook B213x/B2150 */
  79                 .matches = {
  80                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
  81                 },
  82         },
  83         {
  84                 /* Zephyr */
  85                 .matches = {
  86                         DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
  87                 },
  88         },
  89         {
  90                 /* Panasonic CF-18 */
  91                 .matches = {
  92                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
  93                 },
  94                 .callback = lifebook_limit_serio3,
  95         },
  96         {
  97                 /* Panasonic CF-28 */
  98                 .matches = {
  99                         DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
 100                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
 101                 },
 102                 .callback = lifebook_set_6byte_proto,
 103         },
 104         {
 105                 /* Panasonic CF-29 */
 106                 .matches = {
 107                         DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
 108                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
 109                 },
 110                 .callback = lifebook_set_6byte_proto,
 111         },
 112         {
 113                 /* Panasonic CF-72 */
 114                 .matches = {
 115                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"),
 116                 },
 117                 .callback = lifebook_set_6byte_proto,
 118         },
 119         {
 120                 /* Lifebook B142 */
 121                 .matches = {
 122                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
 123                 },
 124         },
 125         { }
 126 };
 127
 128 void __init lifebook_module_init(void)
 129 {
 130         lifebook_present = dmi_check_system(lifebook_dmi_table);
 131 }
 132
 133 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
 134 {
 135         struct lifebook_data *priv = psmouse->private;
 136         struct input_dev *dev1 = psmouse->dev;
 137         struct input_dev *dev2 = priv ? priv->dev2 : NULL;
 138         unsigned char *packet = psmouse->packet;
 139         bool relative_packet = packet[0] & 0x08;
 140
 141         if (relative_packet || !lifebook_use_6byte_proto) {
 142                 if (psmouse->pktcnt != 3)
 143                         return PSMOUSE_GOOD_DATA;
 144         } else {
 145                 switch (psmouse->pktcnt) {
 146                 case 1:
 147                         return (packet[0] & 0xf8) == 0x00 ?
 148                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 149                 case 2:
 150                         return PSMOUSE_GOOD_DATA;
 151                 case 3:
 152                         return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
 153                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 154                 case 4:
 155                         return (packet[3] & 0xf8) == 0xc0 ?
 156                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 157                 case 5:
 158                         return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
 159                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 160                 case 6:
 161                         if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
 162                                 return PSMOUSE_BAD_DATA;
 163                         if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
 164                                 return PSMOUSE_BAD_DATA;
 165                         break; /* report data */
 166                 }
 167         }
 168
 169         if (relative_packet) {
 170                 if (!dev2)
 171                         printk(KERN_WARNING "lifebook.c: got relative packet "
 172                                 "but no relative device set up\n");
 173         } else {
 174                 if (lifebook_use_6byte_proto) {
 175                         input_report_abs(dev1, ABS_X,
 176                                 ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
 177                         input_report_abs(dev1, ABS_Y,
 178                                 4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
 179                 } else {
 180                         input_report_abs(dev1, ABS_X,
 181                                 (packet[1] | ((packet[0] & 0x30) << 4)));
 182                         input_report_abs(dev1, ABS_Y,
 183                                 1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
 184                 }
 185                 input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
 186                 input_sync(dev1);
 187         }
 188
 189         if (dev2) {
 190                 if (relative_packet) {
 191                         input_report_rel(dev2, REL_X,
 192                                 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
 193                         input_report_rel(dev2, REL_Y,
 194                                  -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
 195                 }
 196                 input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
 197                 input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
 198                 input_sync(dev2);
 199         }
 200
 201         return PSMOUSE_FULL_PACKET;
 202 }
 203
 204 static int lifebook_absolute_mode(struct psmouse *psmouse)
 205 {
 206         struct ps2dev *ps2dev = &psmouse->ps2dev;
 207         unsigned char param;
 208
 209         if (psmouse_reset(psmouse))
 210                 return -1;
 211
 212         /*
 213          * Enable absolute output -- ps2_command fails always but if
 214          * you leave this call out the touchsreen will never send
 215          * absolute coordinates
 216          */
 217         param = lifebook_use_6byte_proto ? 0x08 : 0x07;
 218         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
 219
 220         return 0;
 221 }
 222
 223 static void lifebook_relative_mode(struct psmouse *psmouse)
 224 {
 225         struct ps2dev *ps2dev = &psmouse->ps2dev;
 226         unsigned char param = 0x06;
 227
 228         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
 229 }
 230
 231 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
 232 {
 233         static const unsigned char params[] = { 0, 1, 2, 2, 3 };
 234         unsigned char p;
 235
 236         if (resolution == 0 || resolution > 400)
 237                 resolution = 400;
 238
 239         p = params[resolution / 100];
 240         ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
 241         psmouse->resolution = 50 << p;
 242 }
 243
 244 static void lifebook_disconnect(struct psmouse *psmouse)
 245 {
 246         struct lifebook_data *priv = psmouse->private;
 247
 248         psmouse_reset(psmouse);
 249         if (priv) {
 250                 input_unregister_device(priv->dev2);
 251                 kfree(priv);
 252         }
 253         psmouse->private = NULL;
 254 }
 255
 256 int lifebook_detect(struct psmouse *psmouse, bool set_properties)
 257 {
 258         if (!lifebook_present)
 259                 return -1;
 260
 261         if (desired_serio_phys &&
 262             strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
 263                 return -1;
 264
 265         if (set_properties) {
 266                 psmouse->vendor = "Fujitsu";
 267                 psmouse->name = "Lifebook TouchScreen";
 268         }
 269
 270         return 0;
 271 }
 272
 273 static int lifebook_create_relative_device(struct psmouse *psmouse)
 274 {
 275         struct input_dev *dev2;
 276         struct lifebook_data *priv;
 277         int error = -ENOMEM;
 278
 279         priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
 280         dev2 = input_allocate_device();
 281         if (!priv || !dev2)
 282                 goto err_out;
 283
 284         priv->dev2 = dev2;
 285         snprintf(priv->phys, sizeof(priv->phys),
 286                  "%s/input1", psmouse->ps2dev.serio->phys);
 287
 288         dev2->phys = priv->phys;
 289         dev2->name = "PS/2 Touchpad";
 290         dev2->id.bustype = BUS_I8042;
 291         dev2->id.vendor  = 0x0002;
 292         dev2->id.product = PSMOUSE_LIFEBOOK;
 293         dev2->id.version = 0x0000;
 294         dev2->dev.parent = &psmouse->ps2dev.serio->dev;
 295
 296         dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
 297         dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
 298         dev2->keybit[BIT_WORD(BTN_LEFT)] =
 299                                 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
 300
 301         error = input_register_device(priv->dev2);
 302         if (error)
 303                 goto err_out;
 304
 305         psmouse->private = priv;
 306         return 0;
 307
 308  err_out:
 309         input_free_device(dev2);
 310         kfree(priv);
 311         return error;
 312 }
 313
 314 int lifebook_init(struct psmouse *psmouse)
 315 {
 316         struct input_dev *dev1 = psmouse->dev;
 317         int max_coord = lifebook_use_6byte_proto ? 4096 : 1024;
 318
 319         if (lifebook_absolute_mode(psmouse))
 320                 return -1;
 321
 322         dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
 323         dev1->relbit[0] = 0;
 324         dev1->keybit[BIT_WORD(BTN_MOUSE)] = 0;
 325         dev1->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
 326         input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
 327         input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
 328
 329         if (!desired_serio_phys) {
 330                 if (lifebook_create_relative_device(psmouse)) {
 331                         lifebook_relative_mode(psmouse);
 332                         return -1;
 333                 }
 334         }
 335
 336         psmouse->protocol_handler = lifebook_process_byte;
 337         psmouse->set_resolution = lifebook_set_resolution;
 338         psmouse->disconnect = lifebook_disconnect;
 339         psmouse->reconnect  = lifebook_absolute_mode;
 340
 341         psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
 342
 343         /*
 344          * Use packet size = 3 even when using 6-byte protocol because
 345          * that's what POLL will return on Lifebooks (according to spec).
 346          */
 347         psmouse->pktsize = 3;
 348
 349         return 0;
 350 }
 351