diff options
Diffstat (limited to 'drivers/iio/magnetometer/inv_compass/inv_ami306_iio.h')
| -rw-r--r-- | drivers/iio/magnetometer/inv_compass/inv_ami306_iio.h | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/drivers/iio/magnetometer/inv_compass/inv_ami306_iio.h b/drivers/iio/magnetometer/inv_compass/inv_ami306_iio.h new file mode 100644 index 00000000..fa4f4ee1 --- /dev/null +++ b/drivers/iio/magnetometer/inv_compass/inv_ami306_iio.h @@ -0,0 +1,159 @@ +/* +* 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_ */ + |