/*
 * include/linux/trace_imu.h
 *
 * Copyright (c) 2017, NVIDIA CORPORATION.  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 */

#ifndef __TRACE_IMU_H
#define __TRACE_IMU_H

#define CREATE_TRACE_POINTS
#include <trace/events/atrace.h>
#define TRACE_SENSOR_ID			(100)

/*
 * (keep sync with sensor HAL trace.h)
 * COOKIE definition for sensor HAL ATRACE events
 *
 *  3322222222221111111111000 0 000000 - Bit
 *  1098765432109876543210987 6 543210   Position
 * +-------------------------+-+------+
 * | TIMESTAMP               |P| STYPE|
 * +-------------------------+-+------+
 *
 * Where:
 * TIMESTAMP = Sensor event timestamp
 * P         = Private sensor bit indicator (1=private, 0=not private)
 * STYPE     = Sensor TYPE
 */
#define COOKIE_TOTAL_BITS 32
#define COOKIE_SENSOR_TYPE_BITS 6
#define COOKIE_SENSOR_PRIVATE_BITS 1
#define COOKIE_TIMESTAMP_BITS \
    (COOKIE_TOTAL_BITS - COOKIE_SENSOR_PRIVATE_BITS - COOKIE_SENSOR_TYPE_BITS)

#define COOKIE_SENSOR_TYPE_SHIFT 0
#define COOKIE_SENSOR_PRIVATE_SHIFT COOKIE_SENSOR_TYPE_BITS
#define COOKIE_TIMESTAMP_SHIFT \
    (COOKIE_SENSOR_PRIVATE_BITS + COOKIE_SENSOR_TYPE_BITS)

#define COOKIE_SENSOR_TYPE_MASK \
    (((1 << COOKIE_SENSOR_TYPE_BITS) - 1) << COOKIE_SENSOR_TYPE_SHIFT)
#define COOKIE_SENSOR_PRIVATE_MASK \
    (((1 << COOKIE_SENSOR_PRIVATE_BITS) - 1) << COOKIE_SENSOR_PRIVATE_SHIFT)
#define COOKIE_TIMESTAMP_MASK \
    (((1 << COOKIE_TIMESTAMP_BITS) - 1) << COOKIE_TIMESTAMP_SHIFT)

#define SENSOR_TYPE_PRIVATE_BIT_POS 16
#define TIMESTAMP_SCALE_SHIFT 16	// divide by 65536

#define COOKIE(sensor_type,timestamp) \
    (((sensor_type >> (COOKIE_TOTAL_BITS - SENSOR_TYPE_PRIVATE_BIT_POS - \
                 COOKIE_SENSOR_PRIVATE_SHIFT)) & COOKIE_SENSOR_PRIVATE_MASK) | \
    ((sensor_type << COOKIE_SENSOR_TYPE_SHIFT) & COOKIE_SENSOR_TYPE_MASK) | \
    (((timestamp >> TIMESTAMP_SCALE_SHIFT) << COOKIE_TIMESTAMP_SHIFT) \
                                               & COOKIE_TIMESTAMP_MASK))

#endif  /* __TRACE_IMU_H */