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 struct dmi_system_id lifebook_dmi_table[] = {
  24         {
  25                 .ident = "FLORA-ie 55mi",
  26                 .matches = {
  27                         DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"),
  28                 },
  29         },
  30         {
  31                 .ident = "LifeBook B",
  32                 .matches = {
  33                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"),
  34                 },
  35         },
  36         {
  37                 .ident = "Lifebook B",
  38                 .matches = {
  39                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
  40                 },
  41         },
  42         {
  43                 .ident = "Lifebook B213x/B2150",
  44                 .matches = {
  45                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"),
  46                 },
  47         },
  48         {
  49                 .ident = "Zephyr",
  50                 .matches = {
  51                         DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"),
  52                 },
  53         },
  54         {
  55                 .ident = "CF-18",
  56                 .matches = {
  57                         DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
  58                 },
  59         },
  60         {
  61                 .ident = "Lifebook B142",
  62                 .matches = {
  63                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
  64                 },
  65         },
  66         { }
  67 };
  68
  69 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
  70 {
  71         unsigned char *packet = psmouse->packet;
  72         struct input_dev *dev = psmouse->dev;
  73
  74         if (psmouse->pktcnt != 3)
  75                 return PSMOUSE_GOOD_DATA;
  76
  77         /* calculate X and Y */
  78         if ((packet[0] & 0x08) == 0x00) {
  79                 input_report_abs(dev, ABS_X,
  80                                  (packet[1] | ((packet[0] & 0x30) << 4)));
  81                 input_report_abs(dev, ABS_Y,
  82                                  1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
  83         } else {
  84                 input_report_rel(dev, REL_X,
  85                                 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
  86                 input_report_rel(dev, REL_Y,
  87                                  -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
  88         }
  89
  90         input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
  91         input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
  92         input_report_key(dev, BTN_TOUCH, packet[0] & 0x04);
  93
  94         input_sync(dev);
  95
  96         return PSMOUSE_FULL_PACKET;
  97 }
  98
  99 static int lifebook_absolute_mode(struct psmouse *psmouse)
 100 {
 101         struct ps2dev *ps2dev = &psmouse->ps2dev;
 102         unsigned char param;
 103
 104         if (psmouse_reset(psmouse))
 105                 return -1;
 106
 107         /*
 108            Enable absolute output -- ps2_command fails always but if
 109            you leave this call out the touchsreen will never send
 110            absolute coordinates
 111         */
 112         param = 0x07;
 113         ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
 114
 115         return 0;
 116 }
 117
 118 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution)
 119 {
 120         static const unsigned char params[] = { 0, 1, 2, 2, 3 };
 121         unsigned char p;
 122
 123         if (resolution == 0 || resolution > 400)
 124                 resolution = 400;
 125
 126         p = params[resolution / 100];
 127         ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
 128         psmouse->resolution = 50 << p;
 129 }
 130
 131 static void lifebook_disconnect(struct psmouse *psmouse)
 132 {
 133         psmouse_reset(psmouse);
 134 }
 135
 136 int lifebook_detect(struct psmouse *psmouse, int set_properties)
 137 {
 138         if (!dmi_check_system(lifebook_dmi_table))
 139                 return -1;
 140
 141         if (set_properties) {
 142                 psmouse->vendor = "Fujitsu";
 143                 psmouse->name = "Lifebook TouchScreen";
 144         }
 145
 146         return 0;
 147 }
 148
 149 int lifebook_init(struct psmouse *psmouse)
 150 {
 151         struct input_dev *input_dev = psmouse->dev;
 152
 153         if (lifebook_absolute_mode(psmouse))
 154                 return -1;
 155
 156         input_dev->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY) | BIT(EV_REL);
 157         input_dev->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
 158         input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
 159         input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
 160         input_set_abs_params(input_dev, ABS_X, 0, 1024, 0, 0);
 161         input_set_abs_params(input_dev, ABS_Y, 0, 1024, 0, 0);
 162
 163         psmouse->protocol_handler = lifebook_process_byte;
 164         psmouse->set_resolution = lifebook_set_resolution;
 165         psmouse->disconnect = lifebook_disconnect;
 166         psmouse->reconnect  = lifebook_absolute_mode;
 167         psmouse->pktsize = 3;
 168
 169         return 0;
 170 }
 171