driver/temp_sensor/g753.h

/* Copyright 2019 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.
 */

/* G753 temperature sensor module for Chrome EC */

#ifndef __CROS_EC_G753_H
#define __CROS_EC_G753_H


#define G753_I2C_ADDR_FLAGS			0x48

#define G753_IDX_INTERNAL	0

/* G753 register */
#define G753_TEMP_LOCAL				0x00
#define G753_STATUS				0x02
#define G753_CONFIGURATION_R			0x03
#define G753_CONVERSION_RATE_R			0x04
#define G753_LOCAL_TEMP_HIGH_LIMIT_R		0x05
#define G753_CONFIGURATION_W			0x09
#define G753_CONVERSION_RATE_W			0x0A
#define G753_LOCAL_TEMP_HIGH_LIMIT_W		0x0B
#define G753_ONESHOT				0x0F
#define G753_Customer_Data_Log_Register_1	0x2D
#define G753_Customer_Data_Log_Register_2	0x2E
#define G753_Customer_Data_Log_Register_3	0x2F
#define G753_ALERT_MODE				0xBF
#define G753_CHIP_ID				0xFD
#define G753_VENDOR_ID				0xFE
#define G753_DEVICE_ID				0xFF

/* Config register bits */
#define G753_CONFIGURATION_STANDBY		BIT(6)
#define G753_CONFIGURATION_ALERT_MASK		BIT(7)

/* Status register bits */
#define G753_STATUS_LOCAL_TEMP_HIGH_ALARM	BIT(6)
#define G753_STATUS_BUSY			BIT(7)

/**
 * Get the last polled value of a sensor.
 *
 * @param idx		Index to read. Idx indicates whether to read die
 *			temperature or external temperature.
 * @param temp_ptr	Destination for temperature in K.
 *
 * @return EC_SUCCESS if successful, non-zero if error.
 */
int g753_get_val(int idx, int *temp_ptr);

#endif  /* __CROS_EC_G753_H */