/*
   * (C) Copyright 2001
   * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com
   *

   * SPDX-License-Identifier:	GPL-2.0+

   */
  
  #include <common.h>
  #include <config.h>
  #include <command.h>

  #include <dtt.h>

  #include <i2c.h>

  #include <tmu.h>

  #if defined CONFIG_DTT_SENSORS

  static unsigned long sensor_initialized;

  static void _initialize_dtt(void)
  {
  	int i;
  	unsigned char sensors[] = CONFIG_DTT_SENSORS;
  
  	for (i = 0; i < sizeof(sensors); i++) {
  		if ((sensor_initialized & (1 << i)) == 0) {
  			if (dtt_init_one(sensors[i]) != 0) {
  				printf("DTT%d: Failed init!
  ", i);
  				continue;
  			}
  			sensor_initialized |= (1 << i);
  		}
  	}
  }
  
  void dtt_init(void)
  {
  	int old_bus;
  
  	/* switch to correct I2C bus */
  	old_bus = I2C_GET_BUS();
  	I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);
  
  	_initialize_dtt();
  
  	/* switch back to original I2C bus */
  	I2C_SET_BUS(old_bus);
  }

  #endif

  int dtt_i2c(void)

  {

  #if defined CONFIG_DTT_SENSORS

  	int i;
  	unsigned char sensors[] = CONFIG_DTT_SENSORS;

  	int old_bus;

  	/* Force a compilation error, if there are more then 32 sensors */
  	BUILD_BUG_ON(sizeof(sensors) > 32);

  	/* switch to correct I2C bus */

  #ifdef CONFIG_SYS_I2C
  	old_bus = i2c_get_bus_num();
  	i2c_set_bus_num(CONFIG_SYS_DTT_BUS_NUM);
  #else

  	old_bus = I2C_GET_BUS();

  	I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);

  #endif

  	_initialize_dtt();

  	/*
  	 * Loop through sensors, read
  	 * temperature, and output it.
  	 */

  	for (i = 0; i < sizeof(sensors); i++)

  		printf("DTT%d: %i C
  ", i + 1, dtt_get_temp(sensors[i]));

  
  	/* switch back to original I2C bus */

  #ifdef CONFIG_SYS_I2C
  	i2c_set_bus_num(old_bus);
  #else

  	I2C_SET_BUS(old_bus);

  #endif

  #endif

  
  	return 0;

  }
  
  int dtt_tmu(void)
  {
  #if defined CONFIG_TMU_CMD_DTT
  	int cur_temp;
  
  	/* Sense and return latest thermal info */
  	if (tmu_monitor(&cur_temp) == TMU_STATUS_INIT) {
  		puts("TMU is in unknown state, temperature is invalid
  ");
  		return -1;
  	}
  	printf("Current temperature: %u degrees Celsius
  ", cur_temp);
  #endif
  	return 0;
  }
  
  int do_dtt(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  {
  	int err = 0;
  
  	err |= dtt_i2c();
  	err |= dtt_tmu();
  
  	return err;

  }	/* do_dtt() */

  /***************************************************/

  U_BOOT_CMD(
  	  dtt,	1,	1,	do_dtt,

  	  "Read temperature from Digital Thermometer and Thermostat",
  	  ""

  );