/****************************************************************************
 * drivers/usbdev/composite.h
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you 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.
 *
 ****************************************************************************/

#ifndef __DRIVERS_USBDEV_COMPOSITE_H
#define __DRIVERS_USBDEV_COMPOSITE_H

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#include <sys/param.h>
#include <sys/types.h>
#include <stdint.h>

#include <nuttx/usb/usb.h>
#include <nuttx/usb/usbdev.h>
#include <nuttx/usb/usbdev_trace.h>

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

#ifdef CONFIG_USBDEV_COMPOSITE
#  define NUM_DEVICES_TO_HANDLE       (CONFIG_COMPOSITE_DEVICES)
#else
#  define NUM_DEVICES_TO_HANDLE       (1)
#endif

/* These settings are not modifiable via the NuttX configuration */

#define COMPOSITE_CONFIGIDNONE        (0)  /* Config ID = 0 means to return to address mode */
#define COMPOSITE_CONFIGID            (1)  /* The only supported configuration ID */

/****************************************************************************
 * Public Types
 ****************************************************************************/

struct composite_devobj_s
{
  /* Device description given by the user code in the dynamic
   * configuration.
   */

  struct composite_devdesc_s compdesc;

  /* Pointer to device class */

  FAR struct usbdevclass_driver_s *dev;
};

/* This structure describes the internal state of the driver */

struct composite_dev_s
{
  FAR struct usbdev_s      *usbdev;                         /* usbdev driver pointer */
  FAR struct usbdev_req_s  *ctrlreq;                        /* Allocated control request */
  int                       cfgdescsize;                    /* Total size of the configuration descriptor: */
  int                       ninterfaces;                    /* The total number of interfaces in this composite device */
  uint8_t                   config;                         /* Configuration number */
  uint8_t                   ndevices;                       /* Num devices in this composite device */
  struct composite_devobj_s device[NUM_DEVICES_TO_HANDLE];  /* Device class object */
};

/****************************************************************************
 * Public Data
 ****************************************************************************/

#ifdef CONFIG_USBDEV_COMPOSITE
extern const char g_compvendorstr[];
extern const char g_compproductstr[];
extern const char g_compserialstr[];
#endif

/****************************************************************************
 * Public Function Prototypes
 ****************************************************************************/

/****************************************************************************
 * Name: composite_mkstrdesc
 *
 * Description:
 *   Construct a string descriptor
 *
 ****************************************************************************/

int composite_mkstrdesc(uint8_t id, struct usb_strdesc_s *strdesc);

/****************************************************************************
 * Name: composite_getepdesc
 *
 * Description:
 *   Return a pointer to the composite device descriptor
 *
 ****************************************************************************/

FAR const struct usb_devdesc_s *composite_getdevdesc(void);

/****************************************************************************
 * Name: composite_mkcfgdesc
 *
 * Description:
 *   Construct the composite configuration descriptor
 *
 ****************************************************************************/

#ifdef CONFIG_USBDEV_DUALSPEED
int16_t composite_mkcfgdesc(FAR struct composite_dev_s *priv,
                            FAR uint8_t *buf, uint8_t speed, uint8_t type);
#else
int16_t composite_mkcfgdesc(FAR struct composite_dev_s *priv,
                            FAR uint8_t *buf);
#endif

/****************************************************************************
 * Name: composite_getqualdesc
 *
 * Description:
 *   Return a pointer to the composite qual descriptor
 *
 ****************************************************************************/

#ifdef CONFIG_USBDEV_DUALSPEED
FAR const struct usb_qualdesc_s *composite_getqualdesc(void);
#endif

#endif /* __DRIVERS_USBDEV_COMPOSITE_H */