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