tmk_core/tool/mbed/mbed-sdk/libraries/USBHost/USBHostHub/USBHostHub.cpp

   1 /* mbed USBHost Library
   2  * Copyright (c) 2006-2013 ARM Limited
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include "USBHostHub.h"
  18
  19 #if MAX_HUB_NB
  20
  21 #include "USBHost.h"
  22 #include "dbg.h"
  23
  24 #define GET_STATUS 0x00
  25 #define CLEAR_FEATURE 0x01
  26 #define GET_STATE 0x02
  27 #define SET_FEATURE 0x03
  28 #define GET_DESCRIPTOR 0x06
  29
  30 #define PORT_CONNECTION_FEATURE     (0x00)
  31 #define PORT_ENABLE_FEATURE         (0x01)
  32 #define PORT_RESET_FEATURE          (0x04)
  33 #define PORT_POWER_FEATURE          (0x08)
  34
  35 #define C_PORT_CONNECTION_FEATURE     (16)
  36 #define C_PORT_ENABLE_FEATURE         (17)
  37 #define C_PORT_RESET_FEATURE          (20)
  38
  39 #define PORT_CONNECTION   (1 << 0)
  40 #define PORT_ENABLE       (1 << 1)
  41 #define PORT_SUSPEND      (1 << 2)
  42 #define PORT_OVER_CURRENT (1 << 3)
  43 #define PORT_RESET        (1 << 4)
  44 #define PORT_POWER        (1 << 8)
  45 #define PORT_LOW_SPEED    (1 << 9)
  46
  47 #define C_PORT_CONNECTION   (1 << 16)
  48 #define C_PORT_ENABLE       (1 << 17)
  49 #define C_PORT_SUSPEND      (1 << 18)
  50 #define C_PORT_OVER_CURRENT (1 << 19)
  51 #define C_PORT_RESET        (1 << 20)
  52
  53 USBHostHub::USBHostHub() {
  54     host = NULL;
  55     init();
  56 }
  57
  58 void USBHostHub::init() {
  59     dev_connected = false;
  60     dev = NULL;
  61     int_in = NULL;
  62     dev_connected = false;
  63     hub_intf = -1;
  64     hub_device_found = false;
  65     nb_port = 0;
  66     hub_characteristics = 0;
  67
  68     for (int i = 0; i < MAX_HUB_PORT; i++) {
  69         device_children[i] = NULL;
  70     }
  71 }
  72
  73 void USBHostHub::setHost(USBHost * host_) {
  74     host = host_;
  75 }
  76
  77 bool USBHostHub::connected()
  78 {
  79     return dev_connected;
  80 }
  81
  82 bool USBHostHub::connect(USBDeviceConnected * dev)
  83 {
  84     if (dev_connected) {
  85         return true;
  86     }
  87
  88     if(host->enumerate(dev, this)) {
  89         init();
  90         return false;
  91     }
  92
  93     if (hub_device_found) {
  94         this->dev = dev;
  95
  96         int_in = dev->getEndpoint(hub_intf, INTERRUPT_ENDPOINT, IN);
  97
  98         if (!int_in) {
  99             init();
 100             return false;
 101         }
 102
 103         USB_INFO("New HUB: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, hub_intf);
 104         dev->setName("Hub", hub_intf);
 105         host->registerDriver(dev, hub_intf, this, &USBHostHub::disconnect);
 106
 107         int_in->attach(this, &USBHostHub::rxHandler);
 108
 109         // get HUB descriptor
 110         host->controlRead(  dev,
 111                             USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS,
 112                             GET_DESCRIPTOR,
 113                             0x29 << 8, 0, buf, sizeof(HubDescriptor));
 114         nb_port = buf[2];
 115         hub_characteristics = buf[3];
 116
 117         USB_DBG("Hub has %d port", nb_port);
 118
 119         for (uint8_t j = 1; j <= nb_port; j++) {
 120             setPortFeature(PORT_POWER_FEATURE, j);
 121         }
 122         wait_ms(buf[5]*2);
 123
 124         host->interruptRead(dev, int_in, buf, 1, false);
 125         dev_connected = true;
 126         return true;
 127     }
 128
 129     return false;
 130 }
 131
 132 void USBHostHub::disconnect() {
 133     init();
 134 }
 135
 136 /*virtual*/ void USBHostHub::setVidPid(uint16_t vid, uint16_t pid)
 137 {
 138     // we don't check VID/PID for MSD driver
 139 }
 140
 141 /*virtual*/ bool USBHostHub::parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol) //Must return true if the interface should be parsed
 142 {
 143     if ((hub_intf == -1) &&
 144         (intf_class == HUB_CLASS) &&
 145         (intf_subclass == 0) &&
 146         (intf_protocol == 0)) {
 147         hub_intf = intf_nb;
 148         return true;
 149     }
 150     return false;
 151 }
 152
 153 /*virtual*/ bool USBHostHub::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
 154 {
 155     if (intf_nb == hub_intf) {
 156         if ((type == INTERRUPT_ENDPOINT) && (dir == IN)) {
 157             hub_device_found = true;
 158             return true;
 159         }
 160     }
 161     return false;
 162 }
 163
 164 void USBHostHub::deviceConnected(USBDeviceConnected * dev) {
 165     device_children[dev->getPort() - 1] = dev;
 166 }
 167
 168 void USBHostHub::deviceDisconnected(USBDeviceConnected * dev) {
 169     device_children[dev->getPort() - 1] = NULL;
 170 }
 171
 172 void USBHostHub::hubDisconnected() {
 173     for (uint8_t i = 0; i < MAX_HUB_PORT; i++) {
 174         if (device_children[i] != NULL) {
 175             host->freeDevice(device_children[i]);
 176         }
 177     }
 178 }
 179
 180 void USBHostHub::rxHandler() {
 181     uint32_t status;
 182     if (int_in) {
 183         if (int_in->getState() == USB_TYPE_IDLE) {
 184             for (int port = 1; port <= nb_port; port++) {
 185                 status = getPortStatus(port);
 186                 USB_DBG("[hub handler hub: %d] status port %d [hub: %p]: 0x%X", dev->getHub(), port, dev, status);
 187
 188                 // if connection status has changed
 189                 if (status & C_PORT_CONNECTION) {
 190                     if (status & PORT_CONNECTION) {
 191                         USB_DBG("[hub handler hub: %d - port: %d] new device connected", dev->getHub(), port);
 192                         host->deviceConnected(dev->getHub() + 1, port, status & PORT_LOW_SPEED, this);
 193                     } else {
 194                         USB_DBG("[hub handler hub: %d - port: %d] device disconnected", dev->getHub(), port);
 195                         host->deviceDisconnected(dev->getHub() + 1, port, this, 0);
 196                     }
 197
 198                     clearPortFeature(C_PORT_CONNECTION_FEATURE, port);
 199                 }
 200
 201                 if (status & C_PORT_RESET) {
 202                     clearPortFeature(C_PORT_RESET_FEATURE, port);
 203                 }
 204
 205                 if (status & C_PORT_ENABLE) {
 206                     clearPortFeature(C_PORT_ENABLE_FEATURE, port);
 207                 }
 208
 209                 if ((status & PORT_OVER_CURRENT)) {
 210                     USB_ERR("OVER CURRENT DETECTED\r\n");
 211                     clearPortFeature(PORT_OVER_CURRENT, port);
 212                     host->deviceDisconnected(dev->getHub() + 1, port, this, 0);
 213                 }
 214             }
 215         }
 216         host->interruptRead(dev, int_in, buf, 1, false);
 217     }
 218 }
 219
 220 void USBHostHub::portReset(uint8_t port) {
 221     // reset port
 222     uint32_t status;
 223     USB_DBG("reset port %d on hub: %p [this: %p]", port, dev, this)
 224     setPortFeature(PORT_RESET_FEATURE, port);
 225 #if defined(TARGET_RZ_A1H)
 226     Thread::wait(50);   // Reset release waiting for Hi-Speed check.
 227 #endif
 228     while(1) {
 229         status = getPortStatus(port);
 230         if (status & (PORT_ENABLE | PORT_RESET))
 231             break;
 232         if (status & PORT_OVER_CURRENT) {
 233             USB_ERR("OVER CURRENT DETECTED\r\n");
 234             clearPortFeature(PORT_OVER_CURRENT, port);
 235             host->deviceDisconnected(dev->getHub() + 1, port, this, 0);
 236             break;
 237         }
 238         Thread::wait(10);
 239     }
 240 }
 241
 242 void USBHostHub::setPortFeature(uint32_t feature, uint8_t port) {
 243     host->controlWrite( dev,
 244                         USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE | USB_RECIPIENT_ENDPOINT,
 245                         SET_FEATURE,
 246                         feature,
 247                         port,
 248                         NULL,
 249                         0);
 250 }
 251
 252 void USBHostHub::clearPortFeature(uint32_t feature, uint8_t port) {
 253     host->controlWrite( dev,
 254                         USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE | USB_RECIPIENT_ENDPOINT,
 255                         CLEAR_FEATURE,
 256                         feature,
 257                         port,
 258                         NULL,
 259                         0);
 260 }
 261
 262 uint32_t USBHostHub::getPortStatus(uint8_t port) {
 263     uint32_t st;
 264     host->controlRead(  dev,
 265                         USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE | USB_RECIPIENT_ENDPOINT,
 266                         GET_STATUS,
 267                         0,
 268                         port,
 269                         (uint8_t *)&st,
 270                         4);
 271     return st;
 272 }
 273
 274 #endif