touchkit.cc revision 12656:335489e574f3
1/* 2 * Copyright (c) 2010, 2017-2018 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license 10 * terms below provided that you ensure that this notice is replicated 11 * unmodified and in its entirety in all distributions of the software, 12 * modified or unmodified, in source code or in binary form. 13 * 14 * Copyright (c) 2005 The Regents of The University of Michigan 15 * All rights reserved. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions are 19 * met: redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer; 21 * redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution; 24 * neither the name of the copyright holders nor the names of its 25 * contributors may be used to endorse or promote products derived from 26 * this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39 * 40 * Authors: Ali Saidi 41 * William Wang 42 * Andreas Sandberg 43 */ 44 45#include "dev/ps2/touchkit.hh" 46 47#include "base/logging.hh" 48#include "debug/PS2.hh" 49#include "dev/ps2.hh" 50#include "params/PS2TouchKit.hh" 51 52const uint8_t PS2TouchKit::ID[] = {0x00}; 53 54PS2TouchKit::PS2TouchKit(const PS2TouchKitParams *p) 55 : PS2Device(p), 56 vnc(p->vnc), 57 driverInitialized(false) 58{ 59 if (vnc) 60 vnc->setMouse(this); 61} 62 63void 64PS2TouchKit::serialize(CheckpointOut &cp) const 65{ 66 PS2Device::serialize(cp); 67 68 SERIALIZE_SCALAR(driverInitialized); 69} 70 71void 72PS2TouchKit::unserialize(CheckpointIn &cp) 73{ 74 PS2Device::unserialize(cp); 75 76 UNSERIALIZE_SCALAR(driverInitialized); 77} 78 79bool 80PS2TouchKit::recv(const std::vector<uint8_t> &data) 81{ 82 switch (data[0]) { 83 case Ps2::Ps2Reset: 84 sendAck(); 85 send(Ps2::SelfTestPass); 86 return true; 87 88 case Ps2::SetResolution: 89 case Ps2::SetRate: 90 case Ps2::SetStatusLed: 91 sendAck(); 92 return data.size() == 2; 93 94 case Ps2::ReadId: 95 sendAck(); 96 send((const uint8_t *)&ID, sizeof(ID)); 97 return true; 98 99 case Ps2::TpReadId: 100 // We're not a trackpoint device, this should make the probe 101 // go away 102 sendAck(); 103 send(0); 104 send(0); 105 sendAck(); 106 return true; 107 108 case Ps2::SetScaling1_1: 109 case Ps2::SetScaling1_2: 110 case Ps2::Disable: 111 case Ps2::Enable: 112 case Ps2::SetDefaults: 113 sendAck(); 114 return true; 115 116 case Ps2::StatusRequest: 117 sendAck(); 118 send(0); 119 send(2); // default resolution 120 send(100); // default sample rate 121 return true; 122 123 case Ps2::TouchKitId: 124 sendAck(); 125 if (data.size() == 1) { 126 send(Ps2::TouchKitId); 127 send(1); 128 send('A'); 129 130 return false; 131 } else if (data.size() == 3) { 132 driverInitialized = true; 133 return true; 134 } else { 135 return false; 136 } 137 138 default: 139 panic("Unknown byte received: %d\n", data[0]); 140 } 141} 142 143void 144PS2TouchKit::mouseAt(uint16_t x, uint16_t y, uint8_t buttons) 145{ 146 // If the driver hasn't initialized the device yet, no need to try and send 147 // it anything. Similarly we can get vnc mouse events orders of magnitude 148 // faster than m5 can process them. Only queue up two sets mouse movements 149 // and don't add more until those are processed. 150 if (!driverInitialized || sendPending() > 10) 151 return; 152 153 // Convert screen coordinates to touchpad coordinates 154 const uint16_t _x = (2047.0 / vnc->videoWidth()) * x; 155 const uint16_t _y = (2047.0 / vnc->videoHeight()) * y; 156 157 const uint8_t resp[] = { 158 buttons, 159 (uint8_t)(_x >> 7), (uint8_t)(_x & 0x7f), 160 (uint8_t)(_y >> 7), (uint8_t)(_y & 0x7f), 161 }; 162 163 send(resp, sizeof(resp)); 164} 165 166PS2TouchKit * 167PS2TouchKitParams::create() 168{ 169 return new PS2TouchKit(this); 170} 171