/**************************************************************************/
/*                                                                        */
/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
/*                                                                        */
/*       This software is licensed under the Microsoft Software License   */
/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
/*       and in the root directory of this software.                      */
/*                                                                        */
/**************************************************************************/


/**************************************************************************/
/**************************************************************************/
/**                                                                       */ 
/** USBX Component                                                        */ 
/**                                                                       */
/**   Host Sierra Wireless AR module class                                */
/**                                                                       */
/**************************************************************************/
/**************************************************************************/


/* Include necessary system files.  */

#define UX_SOURCE_CODE

#include "ux_api.h"
#include "ux_host_class_swar.h"
#include "ux_host_stack.h"


/**************************************************************************/ 
/*                                                                        */ 
/*  FUNCTION                                               RELEASE        */ 
/*                                                                        */ 
/*    _ux_host_class_swar_configure                       PORTABLE C      */ 
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Chaoqiong Xiao, Microsoft Corporation                               */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */ 
/*    This function calls the USBX stack to do a SET_CONFIGURATION to the */
/*    swar. Once the swar is configured, its interface will be            */ 
/*    activated. The bulk endpoints enumerated(1 IN, 1 OUT ).             */ 
/*                                                                        */ 
/*  INPUT                                                                 */ 
/*                                                                        */ 
/*    swar                                   Pointer to swar class        */ 
/*                                                                        */ 
/*  OUTPUT                                                                */ 
/*                                                                        */ 
/*    Completion Status                                                   */ 
/*                                                                        */ 
/*  CALLS                                                                 */ 
/*                                                                        */ 
/*    _ux_host_stack_configuration_interface_get  Get interface           */ 
/*    _ux_host_stack_device_configuration_get     Get configuration       */ 
/*    _ux_host_stack_device_configuration_select  Select configuration    */  
/*                                                                        */ 
/*  CALLED BY                                                             */ 
/*                                                                        */ 
/*    _ux_host_class_swar_activate                swar class activate     */ 
/*                                                                        */ 
/*  RELEASE HISTORY                                                       */ 
/*                                                                        */ 
/*    DATE              NAME                      DESCRIPTION             */ 
/*                                                                        */ 
/*  05-19-2020     Chaoqiong Xiao           Initial Version 6.0           */
/*  09-30-2020     Chaoqiong Xiao           Modified comment(s),          */
/*                                            optimized based on compile  */
/*                                            definitions,                */
/*                                            resulting in version 6.1    */
/*                                                                        */
/**************************************************************************/
UINT  _ux_host_class_swar_configure(UX_HOST_CLASS_SWAR *swar)
{

UINT                    status;
UX_CONFIGURATION        *configuration;
#if UX_MAX_DEVICES > 1
UX_DEVICE               *parent_device;
#endif


    /* If the device has been configured already, we don't need to do it
       again. */
    if (swar -> ux_host_class_swar_device -> ux_device_state == UX_DEVICE_CONFIGURED)
        return(UX_SUCCESS);

    /* A swar normally has one configuration. So retrieve the 1st configuration
       only.  */
    status =  _ux_host_stack_device_configuration_get(swar -> ux_host_class_swar_device, 0, &configuration);
    if (status != UX_SUCCESS)
    {
    
        /* Error trap. */
        _ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, UX_CONFIGURATION_HANDLE_UNKNOWN);

        /* If trace is enabled, insert this event into the trace buffer.  */
        UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_CONFIGURATION_HANDLE_UNKNOWN, swar -> ux_host_class_swar_device, 0, 0, UX_TRACE_ERRORS, 0, 0)
    
        return(UX_CONFIGURATION_HANDLE_UNKNOWN);
    }

#if UX_MAX_DEVICES > 1
    /* Check the swar power source and check the parent power source for 
       incompatible connections.  */
    if (swar -> ux_host_class_swar_device -> ux_device_power_source == UX_DEVICE_BUS_POWERED)
    {

        /* Get parent device pointer.  */
        parent_device =  swar -> ux_host_class_swar_device -> ux_device_parent;
        
        /* If the device is NULL, the parent is the root swar and we don't have to worry 
           if the parent is not the root swar, check for its power source.  */
        if ((parent_device != UX_NULL) && (parent_device -> ux_device_power_source == UX_DEVICE_BUS_POWERED))
        {                        

            /* Error trap. */
            _ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, UX_CONNECTION_INCOMPATIBLE);

            /* If trace is enabled, insert this event into the trace buffer.  */
            UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_CONNECTION_INCOMPATIBLE, swar, 0, 0, UX_TRACE_ERRORS, 0, 0)

            return(UX_CONNECTION_INCOMPATIBLE);
        }            
    }
#endif

    /* We have the valid configuration. Ask the USBX stack to set this configuration.  */        
    status =  _ux_host_stack_device_configuration_select(configuration);
    if (status != UX_SUCCESS)
        return(status);

    /* If the operation went well, the swar default alternate setting for the swar interface is 
       active. We have to memorize the data interface since the bulk in/out endpoints are hooked to it. */
    status =  _ux_host_stack_configuration_interface_get(configuration, UX_HOST_CLASS_SWAR_DATA_INTERFACE, 0, &swar -> ux_host_class_swar_interface);
    if (status == UX_SUCCESS)
    {

        /* Store the instance in the interface container, this is for the USB stack
           when it needs to invoke the class.  */        
        swar -> ux_host_class_swar_interface -> ux_interface_class_instance =  (VOID *) swar;

        /* Store the class container in the interface.  The device has the correct class, duplicate it to the 
           interface.  */
        swar -> ux_host_class_swar_interface -> ux_interface_class =  swar -> ux_host_class_swar_device -> ux_device_class ;
    }

    /* Return completion status.  */
    return(status);
}