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/*
* 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.
*
* Copyright (c) 2005 The Regents of The University of Michigan
* All rights reserved.
*
* 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
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Ali Saidi
* William Wang
* Andreas Sandberg
*/
#include "dev/ps2/touchkit.hh"
#include "base/logging.hh"
#include "debug/PS2.hh"
#include "dev/ps2.hh"
#include "params/PS2TouchKit.hh"
const uint8_t PS2TouchKit::ID[] = {0x00};
PS2TouchKit::PS2TouchKit(const PS2TouchKitParams *p)
: PS2Device(p),
vnc(p->vnc),
enabled(false), touchKitEnabled(false)
{
if (vnc)
vnc->setMouse(this);
}
void
PS2TouchKit::serialize(CheckpointOut &cp) const
{
PS2Device::serialize(cp);
SERIALIZE_SCALAR(enabled);
SERIALIZE_SCALAR(touchKitEnabled);
}
void
PS2TouchKit::unserialize(CheckpointIn &cp)
{
PS2Device::unserialize(cp);
UNSERIALIZE_SCALAR(enabled);
UNSERIALIZE_SCALAR(touchKitEnabled);
}
bool
PS2TouchKit::recv(const std::vector<uint8_t> &data)
{
switch (data[0]) {
case Ps2::Ps2Reset:
DPRINTF(PS2, "Resetting device.\n");
enabled = false;
touchKitEnabled = false;
sendAck();
send(Ps2::SelfTestPass);
return true;
case Ps2::SetResolution:
case Ps2::SetRate:
case Ps2::SetStatusLed:
sendAck();
return data.size() == 2;
case Ps2::ReadId:
sendAck();
send((const uint8_t *)&ID, sizeof(ID));
return true;
case Ps2::TpReadId:
// We're not a trackpoint device, this should make the probe
// go away
sendAck();
send(0);
send(0);
sendAck();
return true;
case Ps2::SetScaling1_1:
case Ps2::SetScaling1_2:
sendAck();
return true;
case Ps2::Disable:
DPRINTF(PS2, "Disabling device.\n");
enabled = false;
sendAck();
return true;
case Ps2::Enable:
DPRINTF(PS2, "Enabling device.\n");
enabled = true;
sendAck();
return true;
case Ps2::SetDefaults:
DPRINTF(PS2, "Setting defaults and disabling device.\n");
enabled = false;
sendAck();
return true;
case Ps2::StatusRequest:
sendAck();
send(0);
send(2); // default resolution
send(100); // default sample rate
return true;
case Ps2::TouchKitId:
return recvTouchKit(data);
default:
panic("Unknown byte received: %#x\n", data[0]);
}
}
bool
PS2TouchKit::recvTouchKit(const std::vector<uint8_t> &data)
{
// Ack all incoming bytes
sendAck();
// Packet format is: 0x0A SIZE CMD DATA
assert(data[0] == Ps2::TouchKitId);
if (data.size() < 3 || data.size() - 2 < data[1])
return false;
const uint8_t len = data[1];
const uint8_t cmd = data[2];
// We have received at least one TouchKit diagnostic
// command. Enabled TouchKit reports.
touchKitEnabled = true;
switch (cmd) {
case TouchKitActive:
warn_if(len != 1, "Unexpected activate packet length: %u\n", len);
sendTouchKit('A');
return true;
default:
panic("Unimplemented touchscreen command: %#x\n", cmd);
}
}
void
PS2TouchKit::sendTouchKit(const uint8_t *data, size_t size)
{
send(Ps2::TouchKitId);
send(size);
for (int i = 0; i < size; ++i)
send(data[i]);
}
void
PS2TouchKit::mouseAt(uint16_t x, uint16_t y, uint8_t buttons)
{
// If the driver hasn't initialized the device yet, no need to try and send
// it anything. Similarly we can get vnc mouse events orders of magnitude
// faster than m5 can process them. Only queue up two sets mouse movements
// and don't add more until those are processed.
if (!enabled || !touchKitEnabled || sendPending() > 10)
return;
// Convert screen coordinates to touchpad coordinates
const uint16_t _x = (2047.0 / vnc->videoWidth()) * x;
const uint16_t _y = (2047.0 / vnc->videoHeight()) * y;
const uint8_t resp[] = {
buttons,
(uint8_t)(_x >> 7), (uint8_t)(_x & 0x7f),
(uint8_t)(_y >> 7), (uint8_t)(_y & 0x7f),
};
send(resp, sizeof(resp));
}
PS2TouchKit *
PS2TouchKitParams::create()
{
return new PS2TouchKit(this);
}
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