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/*
* Copyright (C) 2012 Invensense, Inc.
*
* 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.
*
*/
/**
* @addtogroup DRIVERS
* @brief Hardware drivers.
*
* @{
* @file inv_ami306_iio.h
* @brief Struct definitions for the Invensense implementation
* of ami306 driver.
*/
#ifndef _INV_GYRO_H_
#define _INV_GYRO_H_
#include <linux/i2c.h>
#include <linux/kfifo.h>
#include <linux/miscdevice.h>
#include <linux/input.h>
#include <linux/spinlock.h>
#include <linux/mpu.h>
#include "iio.h"
#include "buffer.h"
#include "trigger.h"
/** axis sensitivity(gain) calibration parameter information */
struct ami_vector3d {
signed short x; /**< X-axis */
signed short y; /**< Y-axis */
signed short z; /**< Z-axis */
};
/** axis interference information */
struct ami_interference {
/**< Y-axis magnetic field for X-axis correction value */
signed short xy;
/**< Z-axis magnetic field for X-axis correction value */
signed short xz;
/**< X-axis magnetic field for Y-axis correction value */
signed short yx;
/**< Z-axis magnetic field for Y-axis correction value */
signed short yz;
/**< X-axis magnetic field for Z-axis correction value */
signed short zx;
/**< Y-axis magnetic field for Z-axis correction value */
signed short zy;
};
/** sensor calibration Parameter information */
struct ami_sensor_parametor {
/**< geomagnetic field sensor gain */
struct ami_vector3d m_gain;
/**< geomagnetic field sensor gain correction parameter */
struct ami_vector3d m_gain_cor;
/**< geomagnetic field sensor offset */
struct ami_vector3d m_offset;
/**< geomagnetic field sensor axis interference parameter */
struct ami_interference m_interference;
};
/**
* struct inv_ami306_state_s - Driver state variables.
* @plat_data: board file platform data.
* @i2c: i2c client handle.
* @trig: not used. for compatibility.
* @param: ami specific sensor data.
* @work: work data structure.
* @delay: delay between each scheduled work.
* @fine: fine tunign parameters.
* @compass_data: compass data store.
* @timestamp: time stamp.
*/
struct inv_ami306_state_s {
struct mpu_platform_data plat_data;
struct i2c_client *i2c;
struct iio_trigger *trig;
struct ami_sensor_parametor param;
struct delayed_work work;
int delay;
s8 fine[3];
short compass_data[3];
s64 timestamp;
};
/* scan element definition */
enum inv_mpu_scan {
INV_AMI306_SCAN_MAGN_X,
INV_AMI306_SCAN_MAGN_Y,
INV_AMI306_SCAN_MAGN_Z,
INV_AMI306_SCAN_TIMESTAMP,
};
#define REG_AMI_WIA 0x0f
#define REG_AMI_DATAX 0x10
#define REG_AMI_STA1 0x18
#define REG_AMI_CTRL1 0x1b
#define REG_AMI_CTRL2 0x1c
#define REG_AMI_CTRL3 0x1d
#define REG_AMI_B0X 0x20
#define REG_AMI_B0Y 0x22
#define REG_AMI_B0Z 0x24
#define REG_AMI_CTRL5 0x40
#define REG_AMI_CTRL4 0x5c
#define REG_AMI_TEMP 0x60
#define REG_AMI_SENX 0x96
#define REG_AMI_OFFX 0x6c
#define REG_AMI_OFFY 0x72
#define REG_AMI_OFFZ 0x78
#define DATA_WIA 0x46
#define AMI_CTRL1_PC1 0x80
#define AMI_CTRL1_FS1_FORCE 0x02
#define AMI_CTRL1_ODR1 0x10
#define AMI_CTRL2_DREN 0x08
#define AMI_CTRL2_DRP 0x04
#define AMI_CTRL3_FORCE_BIT 0x40
#define AMI_CTRL3_B0_LO_BIT 0x10
#define AMI_CTRL3_SRST_BIT 0x80
#define AMI_CTRL4_HS 0xa07e
#define AMI_CTRL4_AB 0x0001
#define AMI_STA1_DRDY_BIT 0x40
#define AMI_STA1_DOR_BIT 0x20
#define AMI_PARAM_LEN 12
#define AMI_STANDARD_OFFSET 0x800
#define AMI_GAIN_COR_DEFAULT 1000
#define AMI_FINE_MAX 96
#define AMI_MAX_DELAY 1000
#define AMI_MIN_DELAY 10
#define AMI_SCALE (5461 * (1<<15))
#define INV_ERROR_COMPASS_DATA_OVERFLOW (-1)
#define INV_ERROR_COMPASS_DATA_NOT_READY (-2)
int inv_ami306_configure_ring(struct iio_dev *indio_dev);
void inv_ami306_unconfigure_ring(struct iio_dev *indio_dev);
int inv_ami306_probe_trigger(struct iio_dev *indio_dev);
void inv_ami306_remove_trigger(struct iio_dev *indio_dev);
int set_ami306_enable(struct iio_dev *indio_dev, int state);
int ami306_read_raw_data(struct inv_ami306_state_s *st,
short dat[3]);
int inv_read_ami306_fifo(struct iio_dev *indio_dev);
#endif /* #ifndef _INV_GYRO_H_ */
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