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

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/* mbed USBHost Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "USBHostHub.h"
#if MAX_HUB_NB
#include "USBHost.h"
#include "dbg.h"
#define GET_STATUS 0x00
#define CLEAR_FEATURE 0x01
#define GET_STATE 0x02
#define SET_FEATURE 0x03
#define GET_DESCRIPTOR 0x06
#define PORT_CONNECTION_FEATURE (0x00)
#define PORT_ENABLE_FEATURE (0x01)
#define PORT_RESET_FEATURE (0x04)
#define PORT_POWER_FEATURE (0x08)
#define C_PORT_CONNECTION_FEATURE (16)
#define C_PORT_ENABLE_FEATURE (17)
#define C_PORT_RESET_FEATURE (20)
#define PORT_CONNECTION (1 << 0)
#define PORT_ENABLE (1 << 1)
#define PORT_SUSPEND (1 << 2)
#define PORT_OVER_CURRENT (1 << 3)
#define PORT_RESET (1 << 4)
#define PORT_POWER (1 << 8)
#define PORT_LOW_SPEED (1 << 9)
#define C_PORT_CONNECTION (1 << 16)
#define C_PORT_ENABLE (1 << 17)
#define C_PORT_SUSPEND (1 << 18)
#define C_PORT_OVER_CURRENT (1 << 19)
#define C_PORT_RESET (1 << 20)
USBHostHub::USBHostHub() {
host = NULL;
init();
}
void USBHostHub::init() {
dev_connected = false;
dev = NULL;
int_in = NULL;
dev_connected = false;
hub_intf = -1;
hub_device_found = false;
nb_port = 0;
hub_characteristics = 0;
for (int i = 0; i < MAX_HUB_PORT; i++) {
device_children[i] = NULL;
}
}
void USBHostHub::setHost(USBHost * host_) {
host = host_;
}
bool USBHostHub::connected()
{
return dev_connected;
}
bool USBHostHub::connect(USBDeviceConnected * dev)
{
if (dev_connected) {
return true;
}
if(host->enumerate(dev, this)) {
init();
return false;
}
if (hub_device_found) {
this->dev = dev;
int_in = dev->getEndpoint(hub_intf, INTERRUPT_ENDPOINT, IN);
if (!int_in) {
init();
return false;
}
USB_INFO("New HUB: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, hub_intf);
dev->setName("Hub", hub_intf);
host->registerDriver(dev, hub_intf, this, &USBHostHub::disconnect);
int_in->attach(this, &USBHostHub::rxHandler);
// get HUB descriptor
host->controlRead( dev,
USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS,
GET_DESCRIPTOR,
0x29 << 8, 0, buf, sizeof(HubDescriptor));
nb_port = buf[2];
hub_characteristics = buf[3];
USB_DBG("Hub has %d port", nb_port);
for (uint8_t j = 1; j <= nb_port; j++) {
setPortFeature(PORT_POWER_FEATURE, j);
}
wait_ms(buf[5]*2);
host->interruptRead(dev, int_in, buf, 1, false);
dev_connected = true;
return true;
}
return false;
}
void USBHostHub::disconnect() {
init();
}
/*virtual*/ void USBHostHub::setVidPid(uint16_t vid, uint16_t pid)
{
// we don't check VID/PID for MSD driver
}
/*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
{
if ((hub_intf == -1) &&
(intf_class == HUB_CLASS) &&
(intf_subclass == 0) &&
(intf_protocol == 0)) {
hub_intf = intf_nb;
return true;
}
return false;
}
/*virtual*/ bool USBHostHub::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
{
if (intf_nb == hub_intf) {
if ((type == INTERRUPT_ENDPOINT) && (dir == IN)) {
hub_device_found = true;
return true;
}
}
return false;
}
void USBHostHub::deviceConnected(USBDeviceConnected * dev) {
device_children[dev->getPort() - 1] = dev;
}
void USBHostHub::deviceDisconnected(USBDeviceConnected * dev) {
device_children[dev->getPort() - 1] = NULL;
}
void USBHostHub::hubDisconnected() {
for (uint8_t i = 0; i < MAX_HUB_PORT; i++) {
if (device_children[i] != NULL) {
host->freeDevice(device_children[i]);
}
}
}
void USBHostHub::rxHandler() {
uint32_t status;
if (int_in) {
if (int_in->getState() == USB_TYPE_IDLE) {
for (int port = 1; port <= nb_port; port++) {
status = getPortStatus(port);
USB_DBG("[hub handler hub: %d] status port %d [hub: %p]: 0x%X", dev->getHub(), port, dev, status);
// if connection status has changed
if (status & C_PORT_CONNECTION) {
if (status & PORT_CONNECTION) {
USB_DBG("[hub handler hub: %d - port: %d] new device connected", dev->getHub(), port);
host->deviceConnected(dev->getHub() + 1, port, status & PORT_LOW_SPEED, this);
} else {
USB_DBG("[hub handler hub: %d - port: %d] device disconnected", dev->getHub(), port);
host->deviceDisconnected(dev->getHub() + 1, port, this, 0);
}
clearPortFeature(C_PORT_CONNECTION_FEATURE, port);
}
if (status & C_PORT_RESET) {
clearPortFeature(C_PORT_RESET_FEATURE, port);
}
if (status & C_PORT_ENABLE) {
clearPortFeature(C_PORT_ENABLE_FEATURE, port);
}
if ((status & PORT_OVER_CURRENT)) {
USB_ERR("OVER CURRENT DETECTED\r\n");
clearPortFeature(PORT_OVER_CURRENT, port);
host->deviceDisconnected(dev->getHub() + 1, port, this, 0);
}
}
}
host->interruptRead(dev, int_in, buf, 1, false);
}
}
void USBHostHub::portReset(uint8_t port) {
// reset port
uint32_t status;
USB_DBG("reset port %d on hub: %p [this: %p]", port, dev, this)
setPortFeature(PORT_RESET_FEATURE, port);
#if defined(TARGET_RZ_A1H)
Thread::wait(50); // Reset release waiting for Hi-Speed check.
#endif
while(1) {
status = getPortStatus(port);
if (status & (PORT_ENABLE | PORT_RESET))
break;
if (status & PORT_OVER_CURRENT) {
USB_ERR("OVER CURRENT DETECTED\r\n");
clearPortFeature(PORT_OVER_CURRENT, port);
host->deviceDisconnected(dev->getHub() + 1, port, this, 0);
break;
}
Thread::wait(10);
}
}
void USBHostHub::setPortFeature(uint32_t feature, uint8_t port) {
host->controlWrite( dev,
USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE | USB_RECIPIENT_ENDPOINT,
SET_FEATURE,
feature,
port,
NULL,
0);
}
void USBHostHub::clearPortFeature(uint32_t feature, uint8_t port) {
host->controlWrite( dev,
USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE | USB_RECIPIENT_ENDPOINT,
CLEAR_FEATURE,
feature,
port,
NULL,
0);
}
uint32_t USBHostHub::getPortStatus(uint8_t port) {
uint32_t st;
host->controlRead( dev,
USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE | USB_RECIPIENT_ENDPOINT,
GET_STATUS,
0,
port,
(uint8_t *)&st,
4);
return st;
}
#endif