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/* Copyright 2018 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* F75303 temperature sensor module for Chrome EC */
#include "common.h"
#include "f75303.h"
#include "i2c.h"
#include "hooks.h"
#include "util.h"
static int temp_val_local;
static int temp_val_remote1;
/**
* Read 8 bits register from temp sensor.
*/
static int raw_read8(const int offset, int *data_ptr)
{
return i2c_read8(I2C_PORT_THERMAL, F75303_I2C_ADDR, offset, data_ptr);
}
static int get_temp(const int offset, int *temp_ptr)
{
int rv;
int temp_raw = 0;
rv = raw_read8(offset, &temp_raw);
if (rv != 0)
return rv;
*temp_ptr = temp_raw;
return EC_SUCCESS;
}
int f75303_get_val(int idx, int *temp_ptr)
{
switch (idx) {
case F75303_IDX_LOCAL:
*temp_ptr = temp_val_local;
break;
case F75303_IDX_REMOTE:
*temp_ptr = temp_val_remote1;
break;
default:
return EC_ERROR_UNKNOWN;
}
return EC_SUCCESS;
}
static void f75303_sensor_poll(void)
{
get_temp(F75303_TEMP_LOCAL, &temp_val_local);
temp_val_local = C_TO_K(temp_val_local);
get_temp(F75303_TEMP_REMOTE, &temp_val_remote1);
temp_val_remote1 = C_TO_K(temp_val_remote1);
}
DECLARE_HOOK(HOOK_SECOND, f75303_sensor_poll, HOOK_PRIO_TEMP_SENSOR);
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