hostif.h

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/****************************************************************************
 * arch/arm/include/cxd56xx/hostif.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 __ARCH_ARM_INCLUDE_CXD56XX_HOSTIF_H
#define __ARCH_ARM_INCLUDE_CXD56XX_HOSTIF_H
 
/****************************************************************************
 * Included Files
 ****************************************************************************/
 
#include <nuttx/config.h>
#include <stdint.h>
 
/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/
 
#define MAX_BUFFER_NUM 32
 
#define HOSTIF_BUFF_ATTR_ADDR_OFFSET(n) (((n) & 0x3) << 4)
#define HOSTIF_BUFF_ATTR_FIXLEN   (0 << 2) 
#define HOSTIF_BUFF_ATTR_VARLEN   (1 << 2) 
#define HOSTIF_BUFF_ATTR_WRITE    (0 << 1) 
#define HOSTIF_BUFF_ATTR_READ     (1 << 1) 
/****************************************************************************
 * Public Types
 ****************************************************************************/
 
struct hostif_buff_s
{
  uint16_t size; 
  uint16_t flag; 
};
 
struct hostif_i2cconf_s
{
  int                  address; 
  struct hostif_buff_s buff[MAX_BUFFER_NUM];
};
 
struct hostif_spiconf_s
{
  struct hostif_buff_s buff[MAX_BUFFER_NUM];
};
 
#ifndef __ASSEMBLY__
 
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
 
/****************************************************************************
 * Public Function Prototypes
 ****************************************************************************/
 
int hostif_i2cinitialize(struct hostif_i2cconf_s *config);
 
int hostif_spiinitialize(struct hostif_spiconf_s *config);
 
int hostif_uninitialize(void);
 
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_INCLUDE_CXD56XX_HOSTIF_H */