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 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
  48         {
  49                 /* FLORA-ie 55mi */
  50                 .matches = {
  51                         DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"),
  52                 },
  53         },
  54         {
  55                 /* LifeBook B */
  56                 .matches = {
  57                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"),
  58                 },
  59         },
  60         {
  61                 /* Lifebook B */
  62                 .matches = {
  63                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
  64                 },
  65         },
  66         {
  67                 /* Lifebook B-2130 */
  68                 .matches = {
  69                         DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"),
  70                 },
  71         },
  72         {
  73                 /* Lifebook B213x/B2150 */
  74                 .matches = {
  75                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
  76                 },
  77         },
  78         {
  79                 /* Zephyr */
  80                 .matches = {
  81                         DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
  82                 },
  83         },
  84         {
  85                 /* Panasonic CF-18 */
  86                 .matches = {
  87                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
  88                 },
  89                 .callback = lifebook_limit_serio3,
  90         },
  91         {
  92                 /* Panasonic CF-28 */
  93                 .matches = {
  94                         DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
  95                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
  96                 },
  97                 .callback = lifebook_set_6byte_proto,
  98         },
  99         {
 100                 /* Panasonic CF-29 */
 101                 .matches = {
 102                         DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
 103                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
 104                 },
 105                 .callback = lifebook_set_6byte_proto,
 106         },
 107         {
 108                 /* Panasonic CF-72 */
 109                 .matches = {
 110                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"),
 111                 },
 112                 .callback = lifebook_set_6byte_proto,
 113         },
 114         {
 115                 /* Lifebook B142 */
 116                 .matches = {
 117                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
 118                 },
 119         },
 120         { }
 121 #endif
 122 };
 123
 124 void __init lifebook_module_init(void)
 125 {
 126         lifebook_present = dmi_check_system(lifebook_dmi_table);
 127 }
 128
 129 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
 130 {
 131         struct lifebook_data *priv = psmouse->private;
 132         struct input_dev *dev1 = psmouse->dev;
 133         struct input_dev *dev2 = priv ? priv->dev2 : NULL;
 134         unsigned char *packet = psmouse->packet;
 135         bool relative_packet = packet[0] & 0x08;
 136
 137         if (relative_packet || !lifebook_use_6byte_proto) {
 138                 if (psmouse->pktcnt != 3)
 139                         return PSMOUSE_GOOD_DATA;
 140         } else {
 141                 switch (psmouse->pktcnt) {
 142                 case 1:
 143                         return (packet[0] & 0xf8) == 0x00 ?
 144                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 145                 case 2:
 146                         return PSMOUSE_GOOD_DATA;
 147                 case 3:
 148                         return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
 149                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 150                 case 4:
 151                         return (packet[3] & 0xf8) == 0xc0 ?
 152                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 153                 case 5:
 154                         return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
 155                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 156                 case 6:
 157                         if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
 158                                 return PSMOUSE_BAD_DATA;
 159                         if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
 160                                 return PSMOUSE_BAD_DATA;
 161                         break; /* report data */
 162                 }
 163         }
 164
 165         if (relative_packet) {
 166                 if (!dev2)
 167                         printk(KERN_WARNING "lifebook.c: got relative packet "
 168                                 "but no relative device set up\n");
 169         } else {
 170                 if (lifebook_use_6byte_proto) {
 171                         input_report_abs(dev1, ABS_X,
 172                                 ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
 173                         input_report_abs(dev1, ABS_Y,
 174                                 4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
 175                 } else {
 176                         input_report_abs(dev1, ABS_X,
 177                                 (packet[1] | ((packet[0] & 0x30) << 4)));
 178                         input_report_abs(dev1, ABS_Y,
 179                                 1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
 180                 }
 181                 input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
 182                 input_sync(dev1);
 183         }
 184
 185         if (dev2) {
 186                 if (relative_packet) {
 187                         input_report_rel(dev2, REL_X,
 188                                 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
 189                         input_report_rel(dev2, REL_Y,
 190                                  -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
 191                 }
 192                 input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
 193                 input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
 194                 input_sync(dev2);
 195         }
 196
 197         return PSMOUSE_FULL_PACKET;
 198 }
 199
 200 static int lifebook_absolute_mode(struct psmouse *psmouse)
 201 {
 202         struct ps2dev *ps2dev = &psmouse->ps2dev;
 203         unsigned char param;
 204
 205         if (psmouse_reset(psmouse))
 206                 return -1;
 207
 208         /*
 209          * Enable absolute output -- ps2_command fails always but if
 210          * you leave this call out the touchsreen will never send
 211          * absolute coordinates
 212          */
 213         param = lifebook_use_6byte_proto ? 0x08 : 0x07;
 214         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
 215
 216         return 0;
 217 }
 218
 219 static void lifebook_relative_mode(struct psmouse *psmouse)
 220 {
 221         struct ps2dev *ps2dev = &psmouse->ps2dev;
 222         unsigned char param = 0x06;
 223
 224         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
 225 }
 226
 227 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
 228 {
 229         static const unsigned char params[] = { 0, 1, 2, 2, 3 };
 230         unsigned char p;
 231
 232         if (resolution == 0 || resolution > 400)
 233                 resolution = 400;
 234
 235         p = params[resolution / 100];
 236         ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
 237         psmouse->resolution = 50 << p;
 238 }
 239
 240 static void lifebook_disconnect(struct psmouse *psmouse)
 241 {
 242         struct lifebook_data *priv = psmouse->private;
 243
 244         psmouse_reset(psmouse);
 245         if (priv) {
 246                 input_unregister_device(priv->dev2);
 247                 kfree(priv);
 248         }
 249         psmouse->private = NULL;
 250 }
 251
 252 int lifebook_detect(struct psmouse *psmouse, bool set_properties)
 253 {
 254         if (!lifebook_present)
 255                 return -1;
 256
 257         if (desired_serio_phys &&
 258             strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
 259                 return -1;
 260
 261         if (set_properties) {
 262                 psmouse->vendor = "Fujitsu";
 263                 psmouse->name = "Lifebook TouchScreen";
 264         }
 265
 266         return 0;
 267 }
 268
 269 static int lifebook_create_relative_device(struct psmouse *psmouse)
 270 {
 271         struct input_dev *dev2;
 272         struct lifebook_data *priv;
 273         int error = -ENOMEM;
 274
 275         priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL);
 276         dev2 = input_allocate_device();
 277         if (!priv || !dev2)
 278                 goto err_out;
 279
 280         priv->dev2 = dev2;
 281         snprintf(priv->phys, sizeof(priv->phys),
 282                  "%s/input1", psmouse->ps2dev.serio->phys);
 283
 284         dev2->phys = priv->phys;
 285         dev2->name = "PS/2 Touchpad";
 286         dev2->id.bustype = BUS_I8042;
 287         dev2->id.vendor  = 0x0002;
 288         dev2->id.product = PSMOUSE_LIFEBOOK;
 289         dev2->id.version = 0x0000;
 290         dev2->dev.parent = &psmouse->ps2dev.serio->dev;
 291
 292         dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
 293         dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
 294         dev2->keybit[BIT_WORD(BTN_LEFT)] =
 295                                 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
 296
 297         error = input_register_device(priv->dev2);
 298         if (error)
 299                 goto err_out;
 300
 301         psmouse->private = priv;
 302         return 0;
 303
 304  err_out:
 305         input_free_device(dev2);
 306         kfree(priv);
 307         return error;
 308 }
 309
 310 int lifebook_init(struct psmouse *psmouse)
 311 {
 312         struct input_dev *dev1 = psmouse->dev;
 313         int max_coord = lifebook_use_6byte_proto ? 4096 : 1024;
 314
 315         if (lifebook_absolute_mode(psmouse))
 316                 return -1;
 317
 318         dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
 319         dev1->relbit[0] = 0;
 320         dev1->keybit[BIT_WORD(BTN_MOUSE)] = 0;
 321         dev1->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
 322         input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
 323         input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
 324
 325         if (!desired_serio_phys) {
 326                 if (lifebook_create_relative_device(psmouse)) {
 327                         lifebook_relative_mode(psmouse);
 328                         return -1;
 329                 }
 330         }
 331
 332         psmouse->protocol_handler = lifebook_process_byte;
 333         psmouse->set_resolution = lifebook_set_resolution;
 334         psmouse->disconnect = lifebook_disconnect;
 335         psmouse->reconnect  = lifebook_absolute_mode;
 336
 337         psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
 338
 339         /*
 340          * Use packet size = 3 even when using 6-byte protocol because
 341          * that's what POLL will return on Lifebooks (according to spec).
 342          */
 343         psmouse->pktsize = 3;
 344
 345         return 0;
 346 }
 347