/* BOSCH Pressure Sensor Driver
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that 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 BOSCH_BARO_H
#define BOSCH_BARO_H

#include <linux/ioctl.h>
/*****************************************************
|  sensor  |   chip id  |     7-bit i2c address      |
-----------------------------------------------------|
|  bmp280  |    0x56    |0x76(SDO:Low)|0x77(SDO:High)|
*****************************************************/

/* apply low pass filter on output */
/*#define CONFIG_BMP_LOWPASS*/
/*#define CONFIG_ID_TEMPERATURE*/
/*#define CONFIG_I2C_BASIC_FUNCTION*/

#define BMP_DRIVER_VERSION "V1.3"

#define BMP_DEV_NAME        "bmp280"

#define C_MAX_FIR_LENGTH (32)
#define MAX_SENSOR_NAME  (32)
#define BMP_DATA_NUM 1
#define BMP_PRESSURE         0
#define BMP_BUFSIZE			128

/* common definition */
#define BMP_GET_BITSLICE(regvar, bitname)\
	((regvar & bitname##__MSK) >> bitname##__POS)

#define BMP_SET_BITSLICE(regvar, bitname, val)\
	((regvar & ~bitname##__MSK) | ((val<<bitname##__POS)&bitname##__MSK))


#define BMP_CHIP_ID_REG	0xD0

/*********************************[BMP280]*************************************/
/* data type */
#define BMP280_U16_t u16
#define BMP280_S16_t s16
#define BMP280_U32_t u32
#define BMP280_S32_t s32
#define BMP280_U64_t u64
#define BMP280_S64_t s64

/* chip id */
#define BMP280_CHIP_ID1 0x56
#define BMP280_CHIP_ID2 0x57
#define BMP280_CHIP_ID3 0x58

/* i2c address */
/* 7-bit addr: 0x76 (SDO connected to GND); 0x77 (SDO connected to VDDIO) */
#define BMP280_I2C_ADDRESS 0x77

/* calibration data */
#define BMP280_CALIBRATION_DATA_START       0x88 /* BMP280_DIG_T1_LSB_REG */
#define BMP280_CALIBRATION_DATA_LENGTH		24

#define SHIFT_RIGHT_4_POSITION				 4
#define SHIFT_LEFT_2_POSITION                2
#define SHIFT_LEFT_4_POSITION                4
#define SHIFT_LEFT_5_POSITION                5
#define SHIFT_LEFT_8_POSITION                8
#define SHIFT_LEFT_12_POSITION               12
#define SHIFT_LEFT_16_POSITION               16

/* power mode */
#define BMP280_SLEEP_MODE                    0x00
#define BMP280_FORCED_MODE                   0x01
#define BMP280_NORMAL_MODE                   0x03

#define BMP280_CTRLMEAS_REG                  0xF4  /* Ctrl Measure Register */

#define BMP280_CTRLMEAS_REG_MODE__POS              0
#define BMP280_CTRLMEAS_REG_MODE__MSK              0x03
#define BMP280_CTRLMEAS_REG_MODE__LEN              2
#define BMP280_CTRLMEAS_REG_MODE__REG              BMP280_CTRLMEAS_REG

/* filter */
#define BMP280_FILTERCOEFF_OFF               0x00
#define BMP280_FILTERCOEFF_2                 0x01
#define BMP280_FILTERCOEFF_4                 0x02
#define BMP280_FILTERCOEFF_8                 0x03
#define BMP280_FILTERCOEFF_16                0x04

#define BMP280_CONFIG_REG                    0xF5  /* Configuration Register */

#define BMP280_CONFIG_REG_FILTER__POS              2
#define BMP280_CONFIG_REG_FILTER__MSK              0x1C
#define BMP280_CONFIG_REG_FILTER__LEN              3
#define BMP280_CONFIG_REG_FILTER__REG              BMP280_CONFIG_REG

/* oversampling */
#define BMP280_OVERSAMPLING_SKIPPED          0x00
#define BMP280_OVERSAMPLING_1X               0x01
#define BMP280_OVERSAMPLING_2X               0x02
#define BMP280_OVERSAMPLING_4X               0x03
#define BMP280_OVERSAMPLING_8X               0x04
#define BMP280_OVERSAMPLING_16X              0x05

#define BMP280_CTRLMEAS_REG_OSRST__POS             5
#define BMP280_CTRLMEAS_REG_OSRST__MSK             0xE0
#define BMP280_CTRLMEAS_REG_OSRST__LEN             3
#define BMP280_CTRLMEAS_REG_OSRST__REG             BMP280_CTRLMEAS_REG

#define BMP280_CTRLMEAS_REG_OSRSP__POS             2
#define BMP280_CTRLMEAS_REG_OSRSP__MSK             0x1C
#define BMP280_CTRLMEAS_REG_OSRSP__LEN             3
#define BMP280_CTRLMEAS_REG_OSRSP__REG             BMP280_CTRLMEAS_REG

/* data */
#define BMP280_PRESSURE_MSB_REG              0xF7  /* Pressure MSB Register */
#define BMP280_TEMPERATURE_MSB_REG           0xFA  /* Temperature MSB Reg */

/* i2c disable switch */
#define BMP280_I2C_DISABLE_SWITCH            0x87

#endif/* BOSCH_BARO_H */