diff options
Diffstat (limited to 'drivers/iio/magnetometer/inv_compass/inv_yas53x_iio.h')
| -rw-r--r-- | drivers/iio/magnetometer/inv_compass/inv_yas53x_iio.h | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/drivers/iio/magnetometer/inv_compass/inv_yas53x_iio.h b/drivers/iio/magnetometer/inv_compass/inv_yas53x_iio.h new file mode 100644 index 00000000..92bf0af7 --- /dev/null +++ b/drivers/iio/magnetometer/inv_compass/inv_yas53x_iio.h @@ -0,0 +1,172 @@ +/* +* 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_yas53x_iio.h + * @brief Struct definitions for the Invensense implementation + * of yas53x 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" + +#define YAS_MAG_MAX_FILTER_LEN 30 +struct yas_adaptive_filter { + int num; + int index; + int filter_len; + int filter_noise; + int sequence[YAS_MAG_MAX_FILTER_LEN]; +}; + +struct yas_thresh_filter { + int threshold; + int last; +}; + +struct yas_filter { + int filter_len; + int filter_thresh; + int filter_noise[3]; + struct yas_adaptive_filter adap_filter[3]; + struct yas_thresh_filter thresh_filter[3]; +}; + +/** + * struct inv_compass_state - Driver state variables. + * @plat_data: mpu platform data from board file. + * @client: i2c client handle. + * @chan_info: channel information. + * @trig: IIO trigger. + * @work: work structure. + * @delay: delay to schedule the next work. + * @overflow_bound: bound to determine overflow. + * @center: center of the measurement. + * @compass_data[3]: compass data store. + * @offset[3]: yas530 specific data. + * @base_compass_data[3]: first measure data after reset. + * @first_measure_after_reset:1: flag for first measurement after reset. + * @first_read_after_reset:1: flag for first read after reset. + * @reset_timer: timer to accumulate overflow conditions. + * @overunderflow:1: overflow and underflow flag. + * @filter: filter data structure. + * @read_data: function pointer of reading data from device. + * @get_cal_data: function pointer of reading cal data. + */ +struct inv_compass_state { + struct mpu_platform_data plat_data; + struct i2c_client *client; + struct iio_trigger *trig; + struct delayed_work work; + s16 delay; + s16 overflow_bound; + s16 upper_bound; + s16 lower_bound; + s16 center; + s16 compass_data[3]; + s8 offset[3]; + s16 base_compass_data[3]; + u8 first_measure_after_reset:1; + u8 first_read_after_reset:1; + u8 overunderflow:1; + s32 reset_timer; + struct yas_filter filter; + int (*read_data)(struct inv_compass_state *st, + int *, u16 *, u16 *, u16 *, u16 *); + int (*get_cal_data)(struct inv_compass_state *); +}; + +/* scan element definition */ +enum inv_mpu_scan { + INV_YAS53X_SCAN_MAGN_X, + INV_YAS53X_SCAN_MAGN_Y, + INV_YAS53X_SCAN_MAGN_Z, + INV_YAS53X_SCAN_TIMESTAMP, +}; + +#define YAS530_REGADDR_DEVICE_ID 0x80 +#define YAS530_REGADDR_ACTUATE_INIT_COIL 0x81 +#define YAS530_REGADDR_MEASURE_COMMAND 0x82 +#define YAS530_REGADDR_CONFIG 0x83 +#define YAS530_REGADDR_MEASURE_INTERVAL 0x84 +#define YAS530_REGADDR_OFFSET_X 0x85 +#define YAS530_REGADDR_OFFSET_Y1 0x86 +#define YAS530_REGADDR_OFFSET_Y2 0x87 +#define YAS530_REGADDR_TEST1 0x88 +#define YAS530_REGADDR_TEST2 0x89 +#define YAS530_REGADDR_CAL 0x90 +#define YAS530_REGADDR_MEASURE_DATA 0xb0 + +#define YAS530_MAX_DELAY 200 +#define YAS530_MIN_DELAY 5 +#define YAS530_SCALE 107374182L + +#define YAS_YAS530_VERSION_A 0 /* YAS530 (MS-3E Aver) */ +#define YAS_YAS530_VERSION_B 1 /* YAS530B (MS-3E Bver) */ +#define YAS_YAS530_VERSION_A_COEF 380 +#define YAS_YAS530_VERSION_B_COEF 550 +#define YAS_YAS530_DATA_CENTER 2048 +#define YAS_YAS530_DATA_OVERFLOW 4095 +#define YAS_YAS530_CAL_DATA_SIZE 16 + +/*filter related defines */ +#define YAS_MAG_DEFAULT_FILTER_NOISE_X 144 /* sd: 1200 nT */ +#define YAS_MAG_DEFAULT_FILTER_NOISE_Y 144 /* sd: 1200 nT */ +#define YAS_MAG_DEFAULT_FILTER_NOISE_Z 144 /* sd: 1200 nT */ +#define YAS_MAG_DEFAULT_FILTER_LEN 20 + +#define YAS530_MAG_DEFAULT_FILTER_THRESH 100 +#define YAS532_MAG_DEFAULT_FILTER_THRESH 300 + +#define YAS_YAS532_533_VERSION_AB 0 /* YAS532_533AB (MS-3R/3F ABver) */ +#define YAS_YAS532_533_VERSION_AC 1 /* YAS532_533AC (MS-3R/3F ACver) */ +#define YAS_YAS532_533_VERSION_AB_COEF 1800 +#define YAS_YAS532_533_VERSION_AC_COEF 900 +#define YAS_YAS532_533_DATA_CENTER 4096 +#define YAS_YAS532_533_DATA_OVERFLOW 8190 +#define YAS_YAS532_533_CAL_DATA_SIZE 14 + +#define YAS_MAG_DISTURBURNCE_THRESHOLD 1600 +#define YAS_RESET_COIL_TIME_THRESHOLD 3000 + +#define INV_ERROR_COMPASS_DATA_OVERFLOW (-1) +#define INV_ERROR_COMPASS_DATA_NOT_READY (-2) + +int inv_yas53x_configure_ring(struct iio_dev *indio_dev); +void inv_yas53x_unconfigure_ring(struct iio_dev *indio_dev); +int inv_yas53x_probe_trigger(struct iio_dev *indio_dev); +void inv_yas53x_remove_trigger(struct iio_dev *indio_dev); +void set_yas53x_enable(struct iio_dev *indio_dev, bool enable); +void inv_read_yas53x_fifo(struct iio_dev *indio_dev); +int yas53x_read(struct inv_compass_state *st, short rawfixed[3], + s32 *overunderflow); +int yas53x_resume(struct inv_compass_state *st); + +#endif /* #ifndef _INV_GYRO_H_ */ + |