//*****************************************************************************
//
// usbhostpriv.h - Internal header file for USB host functions.
//
// Copyright (c) 2011-2013 Texas Instruments Incorporated.  All rights reserved.
// Software License Agreement
// 
// Texas Instruments (TI) is supplying this software for use solely and
// exclusively on TI's microcontroller products. The software is owned by
// TI and/or its suppliers, and is protected under applicable copyright
// laws. You may not combine this software with "viral" open-source
// software in order to form a larger program.
// 
// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
// DAMAGES, FOR ANY REASON WHATSOEVER.
// 
// This is part of revision 2.0 of the Tiva USB Library.
//
//*****************************************************************************

#ifndef __USBHOSTPRIV_H__
#define __USBHOSTPRIV_H__

//*****************************************************************************
//
// If building with a C++ compiler, make all of the definitions in this header
// have a C binding.
//
//*****************************************************************************
#ifdef __cplusplus
extern "C"
{
#endif

//*****************************************************************************
//
// The states a hub port can be in during device connection.
//
//*****************************************************************************
typedef enum
{
    //
    // The port has no device connected.
    //
    ePortIdle,

    //
    // The port has a device present and is waiting for the enumeration
    // sequence to begin.
    //
    ePortConnected,

    //
    // A device connection notification has been received and we have initiated
    // a reset to the port.  We are waiting for the reset to complete.
    //
    ePortResetActive,

    //
    // The Port reset has completed but now the hub is waiting the required
    // 10ms before accessing the device.
    //
    ePortResetWait,

    //
    // A device is connected and the port has been reset.  Control has been
    // passed to the main host handling portion of USBLib to enumerate the
    // device.
    //
    ePortActive,

    //
    // A device has completed enumeration.
    //
    ePortEnumerated,

    //
    // A device is attached to the port but enumeration failed.
    //
    ePortError
}
tHubPortState;

//*****************************************************************************
//
// The list of valid event flags in the g_sUSBHCD.ui32EventEnables member
// variable.
//
//*****************************************************************************
#define USBHCD_EVFLAG_SOF       0x00000001
#define USBHCD_EVFLAG_CONNECT   0x00000002
#define USBHCD_EVFLAG_UNKCNCT   0x00000004
#define USBHCD_EVFLAG_DISCNCT   0x00000008
#define USBHCD_EVFLAG_PWRFAULT  0x00000010
#define USBHCD_EVFLAG_PWRDIS    0x00000020
#define USBHCD_EVFLAG_PWREN     0x00000040

//*****************************************************************************
//
// This is the structure that holds all of the information for devices
// that are enumerated in the system.  It is passed in to Open function of
// USB host class drivers so that they can allocate any endpoints and parse
// out other information that the device class needs to complete enumeration.
//
//*****************************************************************************
struct tUSBHostDevice
{
    //
    // The current device address for this device.
    //
    uint32_t ui32Address;

    //
    // The current interface for this device.
    //
    uint32_t ui32Interface;

    //
    // A flag used to record whether this is a low-speed or a full-speed
    // device.
    //
    bool bLowSpeed;

    //
    // The USB connection speed for this device.
    //
    uint32_t ui32Speed;

    //
    // A flag indicating whether or not we have read the device's
    // configuration descriptor yet.
    //
    bool bConfigRead;

    //
    // The hub number to which this device is attached.
    //
    uint8_t ui8Hub;

    //
    // The hub port number to which the device is attached.
    //
    uint8_t ui8HubPort;

    //
    // The device descriptor for this device.
    //
    tDeviceDescriptor sDeviceDescriptor;

    //
    // A pointer to the configuration descriptor for this device.
    //
    tConfigDescriptor *psConfigDescriptor;

    //
    // The size of the buffer allocated to psConfigDescriptor.
    //
    uint32_t ui32ConfigDescriptorSize;

    //
    // Internal flags used by the host controller driver.
    //
    uint32_t ui32Flags;
};

//*****************************************************************************
//
// Functions within the host controller that are called by the hub class driver
//
//*****************************************************************************
extern uint32_t USBHCDHubDeviceConnected(uint32_t ui32Index, uint8_t ui8Hub,
                                         uint8_t ui8Port, uint32_t ui32Speed);
extern void USBHCDHubDeviceDisconnected(uint32_t ui32Index,
                                        uint32_t ui32DevIndex);

//*****************************************************************************
//
// Functions in the hub class driver that are called by the host controller.
//
//*****************************************************************************
extern void USBHHubMain(void);
extern void USBHHubInit(void);
extern void USBHHubEnumerationComplete(uint8_t ui8Hub, uint8_t ui8Port);
extern void USBHHubEnumerationError(uint8_t ui8Hub, uint8_t ui8Port);
extern uint32_t USBHCDLPMSleep(tUSBHostDevice *psDevice);
extern uint32_t USBHCDLPMStatus(tUSBHostDevice *psDevice);

//*****************************************************************************
//
// Mark the end of the C bindings section for C++ compilers.
//
//*****************************************************************************
#ifdef __cplusplus
}
#endif

#endif // __USBHOSTPRIV_H__
