xref: /gem5/src/dev/ps2/touchkit.hh

/*
 * Copyright (c) 2010, 2017-2018 ARM Limited
 * All rights reserved
 *
 * The license below extends only to copyright in the software and shall
 * not be construed as granting a license to any other intellectual
 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
 * licensed hereunder.  You may use the software subject to the license
 * terms below provided that you ensure that this notice is replicated
 * unmodified and in its entirety in all distributions of the software,
 * modified or unmodified, in source code or in binary form.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Authors: Andreas Sandberg
 */

#ifndef __DEV_PS2_TOUCHKIT_HH__
#define __DEV_PS2_TOUCHKIT_HH__

#include "base/vnc/vncinput.hh"
#include "dev/ps2/device.hh"

struct PS2TouchKitParams;

class PS2TouchKit : public PS2Device, public VncMouse
{
  protected:
    static const uint8_t ID[];

  public:
    PS2TouchKit(const PS2TouchKitParams *p);

    void serialize(CheckpointOut &cp) const override;
    void unserialize(CheckpointIn &cp) override;

  protected: // PS2Device
    void recv(uint8_t data) override;

  public: // VncMouse
    void mouseAt(uint16_t x, uint16_t y, uint8_t buttons) override;

  protected:
    /** The vnc server we're connected to (if any) */
    VncInput *const vnc;

    /**
     * If the controller should ignore the next N data bytes and
     * acknowledge them. This occurs when the driver is attempting to
     * setup some feature we don't care about.
     */
    int ackNext;

    /**
     * Has the driver been initialized in TouchKit mode? The model
     * suppresses touch event generation until this is true.
     */
    bool driverInitialized;
};

#endif // __DEV_PS2_TOUCHKIT_HH__