drivers/input/mouse/focaltech.c

   1 /*
   2  * Focaltech TouchPad PS/2 mouse driver
   3  *
   4  * Copyright (c) 2014 Red Hat Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Red Hat authors:
  12  *
  13  * Hans de Goede <hdegoede@redhat.com>
  14  */
  15
  16 /*
  17  * The Focaltech PS/2 touchpad protocol is unknown. This drivers deals with
  18  * detection only, to avoid further detection attempts confusing the touchpad
  19  * this way it at least works in PS/2 mouse compatibility mode.
  20  */
  21
  22 #include <linux/device.h>
  23 #include <linux/libps2.h>
  24 #include "psmouse.h"
  25
  26 static const char * const focaltech_pnp_ids[] = {
  27         "FLT0101",
  28         "FLT0102",
  29         "FLT0103",
  30         NULL
  31 };
  32
  33 int focaltech_detect(struct psmouse *psmouse, bool set_properties)
  34 {
  35         if (!psmouse_matches_pnp_id(psmouse, focaltech_pnp_ids))
  36                 return -ENODEV;
  37
  38         if (set_properties) {
  39                 psmouse->vendor = "FocalTech";
  40                 psmouse->name = "FocalTech Touchpad in mouse emulation mode";
  41         }
  42
  43         return 0;
  44 }
  45
  46 int focaltech_init(struct psmouse *psmouse)
  47 {
  48         ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
  49         psmouse_reset(psmouse);
  50
  51         return 0;
  52 }