/****************************************************************************
 * examples/charger/charger_main.c
 *
 *   Copyright 2018 Sony Semiconductor Solutions Corporation
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
 *    the names of its contributors may be used to endorse or promote
 *    products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/

#include <nuttx/config.h>

#include <sys/ioctl.h>
#include <sys/time.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <errno.h>
#include <fcntl.h>

#include <nuttx/power/battery_charger.h>
#include <nuttx/power/battery_ioctl.h>

#include <arch/chip/battery_ioctl.h>
#include <arch/board/board.h>

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

#ifdef CONFIG_EXAMPLES_CHARGER_DEVNAME
#  define DEVPATH CONFIG_EXAMPLES_CHARGER_DEVNAME
#else
#  define DEVPATH "/dev/bat"
#endif

/****************************************************************************
 * Private Functions
 ****************************************************************************/

static int show_charge_setting(int fd)
{
  int curr;
  int vol;
  int revol;
  int compcurr;
  struct battery_temp_table_s tab;
  int ret;

  ret = ioctl(fd, BATIOC_GET_CHGVOLTAGE, (unsigned long)(uintptr_t)&vol);
  if (ret < 0)
    {
      printf("ioctl GET_CHGVOLTAGE failed. %d\n", errno);
      return -1;
    }

  ret = ioctl(fd, BATIOC_GET_CHGCURRENT, (unsigned long)(uintptr_t)&curr);
  if (ret < 0)
    {
      printf("ioctl GET_CHGCURRENT failed. %d\n", errno);
      return -1;
    }

  ret = ioctl(fd, BATIOC_GET_RECHARGEVOL, (unsigned long)(uintptr_t)&revol);
  if (ret < 0)
    {
      printf("ioctl GET_RECHARGEVOL failed. %d\n", errno);
      return -1;
    }

  ret = ioctl(fd, BATIOC_GET_COMPCURRENT,
              (unsigned long)(uintptr_t)&compcurr);
  if (ret < 0)
    {
      printf("ioctl GET_COMPCURRENT failed. %d\n", errno);
      return -1;
    }

  ret = ioctl(fd, BATIOC_GET_TEMPTABLE, (unsigned long)(uintptr_t)&tab);
  if (ret < 0)
    {
      printf("ioctl BATIOC_GET_TEMPTABLE failed. %d\n", errno);
      return -1;
    }

  printf("Charge voltage:         %d\n", vol);
  printf("Charge current limit:   %d\n", curr);
  printf("Recharge voltage:       %d (%d)\n", vol + revol, revol);
  printf("Done current threshold: %d\n", compcurr);
  printf("Temperature table:\n"
         "  60: 0x%x\n"
         "  45: 0x%x\n"
         "  10: 0x%x\n"
         "   0: 0x%x\n",
         tab.T60, tab.T45, tab.T10, tab.T00);

  return 0;
}

static int show_bat_status(int fd)
{
  enum battery_charger_status_e status;
  enum battery_charger_health_e health;
  const char *statestr[] =
    {
      "UNKNOWN",
      "FAULT",
      "IDLE",
      "FULL",
      "CHARGING",
      "DISCHARGING"
    };

  const char *healthstr[] =
    {
      "UNKNOWN",
      "GOOD",
      "DEAD",
      "OVERHEAT",
      "OVERVOLTAGE",
      "UNSPEC_FAIL",
      "COLD",
      "WD_TMR_EXP",
      "SAFE_TMR_EXP",
      "DISCONNECTED"
    };

  int ret;

  ret = ioctl(fd, BATIOC_STATE, (unsigned long)(uintptr_t)&status);
  if (ret < 0)
    {
      printf("ioctl BATIOC_STATE failed. %d\n", errno);
      return -1;
    }

  ret = ioctl(fd, BATIOC_HEALTH, (unsigned long)(uintptr_t)&health);
  if (ret < 0)
    {
      printf("ioctl BATIOC_HEALTH failed. %d\n", errno);
      return -1;
    }

  printf("State: %s, Health: %s\n",
         statestr[status], healthstr[health]);

  return 0;
}

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * charger_main
 ****************************************************************************/

#ifdef CONFIG_BUILD_KERNEL
int main(int argc, FAR char *argv[])
#else
int charger_main(int argc, char *argv[])
#endif
{
  int fd;
  int current;
  int voltage;
  int verbose = 0;
  int opt;
  struct timeval tv;
  int ret;

  while ((opt = getopt(argc, argv, "v")) != -1)
    {
      switch (opt)
        {
          case 'v':
            verbose = 1;
            break;

          default:
            printf("Usage: %s [-v]\n", argv[0]);
            return 1;
        }
    }

  argc--;
  argv++;

  /* Initialize and create battery charger device */

  board_charger_initialize(DEVPATH);

  fd = open(DEVPATH, O_RDWR);
  if (fd < 0)
    {
      printf("Device open error.\n");
      return 0;
    }

  if (verbose)
    {
      show_charge_setting(fd);
      show_bat_status(fd);
    }

  ret = ioctl(fd, BATIOC_GET_CURRENT, (unsigned long)(uintptr_t)&current);
  if (ret < 0)
    {
      printf("ioctl GET_CURRENT failed. %d\n", errno);
      return 1;
    }

  ret = ioctl(fd, BATIOC_GET_VOLTAGE, (unsigned long)(uintptr_t)&voltage);
  if (ret < 0)
    {
      printf("ioctl GET_VOLTAGE failed. %d\n", errno);
      return 1;
    }

  gettimeofday(&tv, NULL);
  printf("%d.%06d: %d mV, %d mA\n",
         tv.tv_sec, tv.tv_usec, voltage, current);

  close(fd);

  /* Uninitialize and remove device file */

  board_charger_uninitialize(DEVPATH);

  return 0;
}