git.oblomov.eu Git - linux-2.6/blob - 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 static const char *desired_serio_phys;
  24
  25 static int lifebook_set_serio_phys(struct dmi_system_id *d)
  26 {
  27         desired_serio_phys = d->driver_data;
  28         return 0;
  29 }
  30
  31 static unsigned char lifebook_use_6byte_proto;
  32
  33 static int lifebook_set_6byte_proto(struct dmi_system_id *d)
  34 {
  35         lifebook_use_6byte_proto = 1;
  36         return 0;
  37 }
  38
  39 static struct dmi_system_id lifebook_dmi_table[] = {
  40         {
  41                 .ident = "FLORA-ie 55mi",
  42                 .matches = {
  43                         DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"),
  44                 },
  45         },
  46         {
  47                 .ident = "LifeBook B",
  48                 .matches = {
  49                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"),
  50                 },
  51         },
  52         {
  53                 .ident = "Lifebook B",
  54                 .matches = {
  55                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
  56                 },
  57         },
  58         {
  59                 .ident = "Lifebook B213x/B2150",
  60                 .matches = {
  61                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
  62                 },
  63         },
  64         {
  65                 .ident = "Zephyr",
  66                 .matches = {
  67                         DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
  68                 },
  69         },
  70         {
  71                 .ident = "CF-18",
  72                 .matches = {
  73                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
  74                 },
  75                 .callback = lifebook_set_serio_phys,
  76                 .driver_data = "isa0060/serio3",
  77         },
  78         {
  79                 .ident = "Panasonic CF-28",
  80                 .matches = {
  81                         DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
  82                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
  83                 },
  84                 .callback = lifebook_set_6byte_proto,
  85         },
  86         {
  87                 .ident = "Panasonic CF-29",
  88                 .matches = {
  89                         DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
  90                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
  91                 },
  92                 .callback = lifebook_set_6byte_proto,
  93         },
  94         {
  95                 .ident = "Lifebook B142",
  96                 .matches = {
  97                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
  98                 },
  99         },
 100         { }
 101 };
 102
 103 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
 104 {
 105         struct input_dev *dev = psmouse->dev;
 106         unsigned char *packet = psmouse->packet;
 107         int relative_packet = packet[0] & 0x08;
 108
 109         if (relative_packet || !lifebook_use_6byte_proto) {
 110                 if (psmouse->pktcnt != 3)
 111                         return PSMOUSE_GOOD_DATA;
 112         } else {
 113                 switch (psmouse->pktcnt) {
 114                 case 1:
 115                         return (packet[0] & 0xf8) == 0x00 ?
 116                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 117                 case 2:
 118                         return PSMOUSE_GOOD_DATA;
 119                 case 3:
 120                         return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
 121                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 122                 case 4:
 123                         return (packet[3] & 0xf8) == 0xc0 ?
 124                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 125                 case 5:
 126                         return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
 127                                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 128                 case 6:
 129                         if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
 130                                 return PSMOUSE_BAD_DATA;
 131                         if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
 132                                 return PSMOUSE_BAD_DATA;
 133                         break; /* report data */
 134                 }
 135         }
 136
 137         if (relative_packet) {
 138                 input_report_rel(dev, REL_X,
 139                                 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
 140                 input_report_rel(dev, REL_Y,
 141                                  -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
 142         } else if (lifebook_use_6byte_proto) {
 143                 input_report_abs(dev, ABS_X,
 144                                  ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
 145                 input_report_abs(dev, ABS_Y,
 146                                  4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
 147         } else {
 148                 input_report_abs(dev, ABS_X,
 149                                  (packet[1] | ((packet[0] & 0x30) << 4)));
 150                 input_report_abs(dev, ABS_Y,
 151                                  1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
 152         }
 153
 154         input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
 155         input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
 156         input_report_key(dev, BTN_TOUCH, packet[0] & 0x04);
 157
 158         input_sync(dev);
 159
 160         return PSMOUSE_FULL_PACKET;
 161 }
 162
 163 static int lifebook_absolute_mode(struct psmouse *psmouse)
 164 {
 165         struct ps2dev *ps2dev = &psmouse->ps2dev;
 166         unsigned char param;
 167
 168         if (psmouse_reset(psmouse))
 169                 return -1;
 170
 171         /*
 172            Enable absolute output -- ps2_command fails always but if
 173            you leave this call out the touchsreen will never send
 174            absolute coordinates
 175         */
 176         param = lifebook_use_6byte_proto ? 0x08 : 0x07;
 177         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
 178
 179         return 0;
 180 }
 181
 182 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
 183 {
 184         static const unsigned char params[] = { 0, 1, 2, 2, 3 };
 185         unsigned char p;
 186
 187         if (resolution == 0 || resolution > 400)
 188                 resolution = 400;
 189
 190         p = params[resolution / 100];
 191         ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
 192         psmouse->resolution = 50 << p;
 193 }
 194
 195 static void lifebook_disconnect(struct psmouse *psmouse)
 196 {
 197         psmouse_reset(psmouse);
 198 }
 199
 200 int lifebook_detect(struct psmouse *psmouse, int set_properties)
 201 {
 202         if (!dmi_check_system(lifebook_dmi_table))
 203                 return -1;
 204
 205         if (desired_serio_phys &&
 206             strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys))
 207                 return -1;
 208
 209         if (set_properties) {
 210                 psmouse->vendor = "Fujitsu";
 211                 psmouse->name = "Lifebook TouchScreen";
 212         }
 213
 214         return 0;
 215 }
 216
 217 int lifebook_init(struct psmouse *psmouse)
 218 {
 219         struct input_dev *input_dev = psmouse->dev;
 220         int max_coord = lifebook_use_6byte_proto ? 1024 : 4096;
 221
 222         if (lifebook_absolute_mode(psmouse))
 223                 return -1;
 224
 225         input_dev->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY) | BIT(EV_REL);
 226         input_dev->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
 227         input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
 228         input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
 229         input_set_abs_params(input_dev, ABS_X, 0, max_coord, 0, 0);
 230         input_set_abs_params(input_dev, ABS_Y, 0, max_coord, 0, 0);
 231
 232         psmouse->protocol_handler = lifebook_process_byte;
 233         psmouse->set_resolution = lifebook_set_resolution;
 234         psmouse->disconnect = lifebook_disconnect;
 235         psmouse->reconnect  = lifebook_absolute_mode;
 236
 237         /*
 238          * Use packet size = 3 even when using 6-byte protocol because
 239          * that's what POLL will return on Lifebooks (according to spec).
 240          */
 241         psmouse->pktsize = 3;
 242
 243         return 0;
 244 }
 245