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 #include <linux/slab.h>
  20 #include <linux/types.h>
  21
  22 #include "psmouse.h"
  23 #include "lifebook.h"
  24
  25 struct lifebook_data {
  26         struct input_dev *dev2;         /* Relative device */
  27         char phys[32];
  28 };
  29
  30 static bool lifebook_present;
  31
  32 static const char *desired_serio_phys;
  33
  34 static int lifebook_limit_serio3(const struct dmi_system_id *d)
  35 {
  36         desired_serio_phys = "isa0060/serio3";
  37         return 1;
  38 }
  39
  40 static bool lifebook_use_6byte_proto;
  41
  42 static int lifebook_set_6byte_proto(const struct dmi_system_id *d)
  43 {
  44         lifebook_use_6byte_proto = true;
  45         return 1;
  46 }
  47
  48 static const struct dmi_system_id lifebook_dmi_table[] __initconst = {
  49         {
  50                 /* FLORA-ie 55mi */
  51                 .matches = {
  52                         DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"),
  53                 },
  54         },
  55         {
  56                 /* LifeBook B */
  57                 .matches = {
  58                         DMI_MATCH(DMI_PRODUCT_NAME, "Lifebook B Series"),
  59                 },
  60         },
  61         {
  62                 /* LifeBook B */
  63                 .matches = {
  64                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"),
  65                 },
  66         },
  67         {
  68                 /* Lifebook B */
  69                 .matches = {
  70                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
  71                 },
  72         },
  73         {
  74                 /* Lifebook B-2130 */
  75                 .matches = {
  76                         DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"),
  77                 },
  78         },
  79         {
  80                 /* Lifebook B213x/B2150 */
  81                 .matches = {
  82                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
  83                 },
  84         },
  85         {
  86                 /* Zephyr */
  87                 .matches = {
  88                         DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
  89                 },
  90         },
  91         {
  92                 /* Panasonic CF-18 */
  93                 .matches = {
  94                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
  95                 },
  96                 .callback = lifebook_limit_serio3,
  97         },
  98         {
  99                 /* Panasonic CF-28 */
 100                 .matches = {
 101                         DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
 102                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
 103                 },
 104                 .callback = lifebook_set_6byte_proto,
 105         },
 106         {
 107                 /* Panasonic CF-29 */
 108                 .matches = {
 109                         DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
 110                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
 111                 },
 112                 .callback = lifebook_set_6byte_proto,
 113         },
 114         {
 115                 /* Panasonic CF-72 */
 116                 .matches = {
 117                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"),
 118                 },
 119                 .callback = lifebook_set_6byte_proto,
 120         },
 121         {
 122                 /* Lifebook B142 */
 123                 .matches = {
 124                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
 125                 },
 126         },
 127         { }
 128 };
 129
 130 void __init lifebook_module_init(void)
 131 {
 132         lifebook_present = dmi_check_system(lifebook_dmi_table);
 133 }
 134
 135 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
 136 {
 137         struct lifebook_data *priv = psmouse->private;
 138         struct input_dev *dev1 = psmouse->dev;
 139         struct input_dev *dev2 = priv ? priv->dev2 : NULL;
 140         u8 *packet = psmouse->packet;
 141         bool relative_packet = packet[0] & 0x08;
 142
 143         if (relative_packet || !lifebook_use_6byte_proto) {
 144                 if (psmouse->pktcnt != 3)
 145                         return PSMOUSE_GOOD_DATA;
 146         } else {
 147                 switch (psmouse->pktcnt) {
 148                 case 1:
 149                         return (packet[0] & 0xf8) == 0x00 ?
 150                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 151                 case 2:
 152                         return PSMOUSE_GOOD_DATA;
 153                 case 3:
 154                         return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
 155                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 156                 case 4:
 157                         return (packet[3] & 0xf8) == 0xc0 ?
 158                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 159                 case 5:
 160                         return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
 161                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 162                 case 6:
 163                         if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
 164                                 return PSMOUSE_BAD_DATA;
 165                         if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
 166                                 return PSMOUSE_BAD_DATA;
 167                         break; /* report data */
 168                 }
 169         }
 170
 171         if (relative_packet) {
 172                 if (!dev2)
 173                         psmouse_warn(psmouse,
 174                                      "got relative packet but no relative device set up\n");
 175         } else {
 176                 if (lifebook_use_6byte_proto) {
 177                         input_report_abs(dev1, ABS_X,
 178                                 ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
 179                         input_report_abs(dev1, ABS_Y,
 180                                 4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
 181                 } else {
 182                         input_report_abs(dev1, ABS_X,
 183                                 (packet[1] | ((packet[0] & 0x30) << 4)));
 184                         input_report_abs(dev1, ABS_Y,
 185                                 1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
 186                 }
 187                 input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04);
 188                 input_sync(dev1);
 189         }
 190
 191         if (dev2) {
 192                 if (relative_packet)
 193                         psmouse_report_standard_motion(dev2, packet);
 194
 195                 psmouse_report_standard_buttons(dev2, packet[0]);
 196                 input_sync(dev2);
 197         }
 198
 199         return PSMOUSE_FULL_PACKET;
 200 }
 201
 202 static int lifebook_absolute_mode(struct psmouse *psmouse)
 203 {
 204         struct ps2dev *ps2dev = &psmouse->ps2dev;
 205         u8 param;
 206         int error;
 207
 208         error = psmouse_reset(psmouse);
 209         if (error)
 210                 return error;
 211
 212         /*
 213          * Enable absolute output -- ps2_command fails always but if
 214          * you leave this call out the touchscreen 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         u8 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 u8 params[] = { 0, 1, 2, 2, 3 };
 234         u8 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 -ENXIO;
 260
 261         if (desired_serio_phys &&
 262             strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
 263                 return -ENXIO;
 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 = "LBPS/2 Fujitsu Lifebook 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         input_set_capability(dev2, EV_REL, REL_X);
 297         input_set_capability(dev2, EV_REL, REL_Y);
 298         input_set_capability(dev2, EV_KEY, BTN_LEFT);
 299         input_set_capability(dev2, EV_KEY, 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         int error;
 319
 320         error = lifebook_absolute_mode(psmouse);
 321         if (error)
 322                 return error;
 323
 324         /* Clear default capabilities */
 325         bitmap_zero(dev1->evbit, EV_CNT);
 326         bitmap_zero(dev1->relbit, REL_CNT);
 327         bitmap_zero(dev1->keybit, KEY_CNT);
 328
 329         input_set_capability(dev1, EV_KEY, BTN_TOUCH);
 330         input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
 331         input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);
 332
 333         if (!desired_serio_phys) {
 334                 error = lifebook_create_relative_device(psmouse);
 335                 if (error) {
 336                         lifebook_relative_mode(psmouse);
 337                         return error;
 338                 }
 339         }
 340
 341         psmouse->protocol_handler = lifebook_process_byte;
 342         psmouse->set_resolution = lifebook_set_resolution;
 343         psmouse->disconnect = lifebook_disconnect;
 344         psmouse->reconnect  = lifebook_absolute_mode;
 345
 346         psmouse->model = lifebook_use_6byte_proto ? 6 : 3;
 347
 348         /*
 349          * Use packet size = 3 even when using 6-byte protocol because
 350          * that's what POLL will return on Lifebooks (according to spec).
 351          */
 352         psmouse->pktsize = 3;
 353
 354         return 0;
 355 }
 356