touchkit.cc revision 12658:eaa132294582
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 enabled(false), touchKitEnabled(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(enabled); 69 SERIALIZE_SCALAR(touchKitEnabled); 70} 71 72void 73PS2TouchKit::unserialize(CheckpointIn &cp) 74{ 75 PS2Device::unserialize(cp); 76 77 UNSERIALIZE_SCALAR(enabled); 78 UNSERIALIZE_SCALAR(touchKitEnabled); 79} 80 81bool 82PS2TouchKit::recv(const std::vector<uint8_t> &data) 83{ 84 switch (data[0]) { 85 case Ps2::Ps2Reset: 86 DPRINTF(PS2, "Resetting device.\n"); 87 enabled = false; 88 touchKitEnabled = false; 89 sendAck(); 90 send(Ps2::SelfTestPass); 91 return true; 92 93 case Ps2::SetResolution: 94 case Ps2::SetRate: 95 case Ps2::SetStatusLed: 96 sendAck(); 97 return data.size() == 2; 98 99 case Ps2::ReadId: 100 sendAck(); 101 send((const uint8_t *)&ID, sizeof(ID)); 102 return true; 103 104 case Ps2::TpReadId: 105 // We're not a trackpoint device, this should make the probe 106 // go away 107 sendAck(); 108 send(0); 109 send(0); 110 sendAck(); 111 return true; 112 113 case Ps2::SetScaling1_1: 114 case Ps2::SetScaling1_2: 115 sendAck(); 116 return true; 117 118 case Ps2::Disable: 119 DPRINTF(PS2, "Disabling device.\n"); 120 enabled = false; 121 sendAck(); 122 return true; 123 124 case Ps2::Enable: 125 DPRINTF(PS2, "Enabling device.\n"); 126 enabled = true; 127 sendAck(); 128 return true; 129 130 case Ps2::SetDefaults: 131 DPRINTF(PS2, "Setting defaults and disabling device.\n"); 132 enabled = false; 133 sendAck(); 134 return true; 135 136 case Ps2::StatusRequest: 137 sendAck(); 138 send(0); 139 send(2); // default resolution 140 send(100); // default sample rate 141 return true; 142 143 case Ps2::TouchKitId: 144 return recvTouchKit(data); 145 146 default: 147 panic("Unknown byte received: %#x\n", data[0]); 148 } 149} 150 151bool 152PS2TouchKit::recvTouchKit(const std::vector<uint8_t> &data) 153{ 154 // Ack all incoming bytes 155 sendAck(); 156 157 // Packet format is: 0x0A SIZE CMD DATA 158 assert(data[0] == Ps2::TouchKitId); 159 if (data.size() < 3 || data.size() - 2 < data[1]) 160 return false; 161 162 const uint8_t len = data[1]; 163 const uint8_t cmd = data[2]; 164 165 // We have received at least one TouchKit diagnostic 166 // command. Enabled TouchKit reports. 167 touchKitEnabled = true; 168 169 170 switch (cmd) { 171 case TouchKitActive: 172 warn_if(len != 1, "Unexpected activate packet length: %u\n", len); 173 sendTouchKit('A'); 174 return true; 175 176 default: 177 panic("Unimplemented touchscreen command: %#x\n", cmd); 178 } 179} 180 181void 182PS2TouchKit::sendTouchKit(const uint8_t *data, size_t size) 183{ 184 send(Ps2::TouchKitId); 185 send(size); 186 for (int i = 0; i < size; ++i) 187 send(data[i]); 188} 189 190 191void 192PS2TouchKit::mouseAt(uint16_t x, uint16_t y, uint8_t buttons) 193{ 194 // If the driver hasn't initialized the device yet, no need to try and send 195 // it anything. Similarly we can get vnc mouse events orders of magnitude 196 // faster than m5 can process them. Only queue up two sets mouse movements 197 // and don't add more until those are processed. 198 if (!enabled || !touchKitEnabled || sendPending() > 10) 199 return; 200 201 // Convert screen coordinates to touchpad coordinates 202 const uint16_t _x = (2047.0 / vnc->videoWidth()) * x; 203 const uint16_t _y = (2047.0 / vnc->videoHeight()) * y; 204 205 const uint8_t resp[] = { 206 buttons, 207 (uint8_t)(_x >> 7), (uint8_t)(_x & 0x7f), 208 (uint8_t)(_y >> 7), (uint8_t)(_y & 0x7f), 209 }; 210 211 send(resp, sizeof(resp)); 212} 213 214PS2TouchKit * 215PS2TouchKitParams::create() 216{ 217 return new PS2TouchKit(this); 218} 219