drivers/iio/imu/inv_mpu6050/inv_mpu_magn.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2019 TDK-InvenSense, Inc.
   4  */
   5
   6 #ifndef INV_MPU_MAGN_H_
   7 #define INV_MPU_MAGN_H_
   8
   9 #include <linux/kernel.h>
  10
  11 #include "inv_mpu_iio.h"
  12
  13 /* Magnetometer maximum frequency */
  14 #define INV_MPU_MAGN_FREQ_HZ_MAX        50
  15
  16 int inv_mpu_magn_probe(struct inv_mpu6050_state *st);
  17
  18 /**
  19  * inv_mpu_magn_get_scale() - get magnetometer scale value
  20  * @st: driver internal state
  21  *
  22  * Returns IIO data format.
  23  */
  24 static inline int inv_mpu_magn_get_scale(const struct inv_mpu6050_state *st,
  25                                          const struct iio_chan_spec *chan,
  26                                          int *val, int *val2)
  27 {
  28         *val = 0;
  29         *val2 = st->magn_raw_to_gauss[chan->address];
  30         return IIO_VAL_INT_PLUS_MICRO;
  31 }
  32
  33 int inv_mpu_magn_set_rate(const struct inv_mpu6050_state *st, int fifo_rate);
  34
  35 int inv_mpu_magn_set_orient(struct inv_mpu6050_state *st);
  36
  37 int inv_mpu_magn_read(struct inv_mpu6050_state *st, int axis, int *val);
  38
  39 #endif          /* INV_MPU_MAGN_H_ */