/*
 * Copyright 2012-2020 NXP
 *
 * 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 <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include <termios.h>
#include <unistd.h>

#include <phUwbStatus.h>
#include <phNxpLog.h>
#include <phTmlUwb_spi.h>
#include <string.h>
#include "phNxpUciHal_utils.h"
#include "phNxpUciHal.h"
/*********************** Global Variables *************************************/
/* UCI HAL Control structure */
extern phNxpUciHal_Control_t nxpucihal_ctrl;

/*******************************************************************************
**
** Function         phTmlUwb_spi_open_and_configure
**
** Description      Open and configure SR100
**
** Parameters       pDevName    - device node path
**                  pLinkHandle - device handle
**
** Returns          UWB status:
**                  UWBSTATUS_SUCCESS - open_and_configure operation success
**                  UWBSTATUS_INVALID_DEVICE - device open operation failure
**
*******************************************************************************/
tHAL_UWB_STATUS phTmlUwb_spi_open_and_configure(const char* pDevName, void** pLinkHandle)
{
  int nHandle;

  NXPLOG_TML_D("Opening port=%s\n", pDevName);
  /* open port */
  nHandle = open(pDevName, O_RDWR);
  if (nHandle < 0) {
    NXPLOG_TML_E("_spi_open() Failed: retval %x", nHandle);
    *pLinkHandle = NULL;
    return UWBSTATUS_INVALID_DEVICE;
  }

  *pLinkHandle = (void*)((intptr_t)nHandle);

  return UWBSTATUS_SUCCESS;
}

/*******************************************************************************
**
** Function         phTmlUwb_spi_write
**
** Description      Writes requested number of bytes from given buffer into
**                  SR100
**
** Parameters       pDevHandle       - valid device handle
**                  pBuffer          - buffer for read data
**                  nNbBytesToWrite  - number of bytes requested to be written
**
** Returns          numWrote   - number of successfully written bytes
**                  -1         - write operation failure
**
*******************************************************************************/
int phTmlUwb_spi_write(void* pDevHandle, const uint8_t* pBuffer, size_t nNbBytesToWrite)
{
  int ret;
  ssize_t numWrote;

  if (NULL == pDevHandle) {
    NXPLOG_TML_E("_spi_write() device is null");
    return -1;
  }

  if (nNbBytesToWrite == 0) {
    NXPLOG_TML_E("_spi_write() with 0 bytes");
    return -1;
  }

  numWrote = write((intptr_t)pDevHandle, pBuffer, nNbBytesToWrite);
  if (numWrote == -1) {
    NXPLOG_TML_E("_spi_write() failed: %d", errno);
    return -1;
  } else if (numWrote != nNbBytesToWrite) {
    NXPLOG_TML_E("_spi_write() size mismatch %zd != %zd", nNbBytesToWrite, numWrote);
  }

  return numWrote;
}

/*******************************************************************************
**
** Function         phTmlUwb_spi_read
**
** Description      Reads requested number of bytes from SR100 device into
**                  given buffer
**
** Parameters       pDevHandle       - valid device handle
**                  pBuffer          - buffer for read data
**                  nNbBytesToRead   - number of bytes requested to be read
**
** Returns          numRead   - number of successfully read bytes
**                  -1        - read operation failure
**
*******************************************************************************/
int phTmlUwb_spi_read(void* pDevHandle, uint8_t* pBuffer, size_t nNbBytesToRead)
{
  ssize_t ret_Read;

  if (NULL == pDevHandle) {
    NXPLOG_TML_E("_spi_read() error handle");
    return -1;
  }

  ret_Read = read((intptr_t)pDevHandle, pBuffer, nNbBytesToRead);
  if (ret_Read == -1) {
     NXPLOG_TML_E("_spi_read() error: %d", errno);
  } else if((nxpucihal_ctrl.fw_dwnld_mode) && ((0xFF == pBuffer[0]) || ((0x00 == pBuffer[0]) && (0x00 == pBuffer[3])))) {
      NXPLOG_TML_E("_spi_read() error: Invalid UCI packet");
      /* To Avoid spurious interrupt after FW download */
      ret_Read = 0;
  }

  return ret_Read;
}

/*******************************************************************************
**
** Function         phTmlUwb_Spi_Ioctl
**
** Description      Reset SR100, using VEN pin
**
** Parameters       pDevHandle     - valid device handle
**                  level          - reset level
**
** Returns           0   - reset operation success
**                  -1   - reset operation failure
**
*******************************************************************************/
int phTmlUwb_Spi_Ioctl(void* pDevHandle, phTmlUwb_ControlCode_t eControlCode , long arg) {
  NXPLOG_TML_D("phTmlUwb_Spi_Ioctl(), cmd %d,  arg %ld", static_cast<int>(eControlCode), arg);
  int ret = 1;
  if (NULL == pDevHandle) {
    return -1;
  }
  switch(eControlCode){
    case phTmlUwb_ControlCode_t::SetPower:
      ioctl((intptr_t)pDevHandle, SRXXX_SET_PWR, arg);
      break;
    case phTmlUwb_ControlCode_t::EnableFwdMode:
      ioctl((intptr_t)pDevHandle, SRXXX_SET_FWD, arg);
      break;
    case phTmlUwb_ControlCode_t::EnableThroughPut:
      //ioctl((intptr_t)pDevHandle, SRXXX_GET_THROUGHPUT, arg);
      break;
    case phTmlUwb_ControlCode_t::EseReset:
      ioctl((intptr_t)pDevHandle, SRXXX_ESE_RESET, arg);
      break;
    default:
      NXPLOG_TML_D("phTmlUwb_Spi_Ioctl(), Invalid command");
      ret = -1;
  }
  return ret;
}

/*******************************************************************************
**
** Function         phTmlUwb_spi_close
**
** Description      Closes SR100 device
**
** Parameters       pDevHandle - device handle
**
** Returns          None
**
*******************************************************************************/
void phTmlUwb_spi_close(void* pDevHandle) {
  if (NULL != pDevHandle) {
    close((intptr_t)pDevHandle);
  }

  return;
}