40 lines · c
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 5015 16int inv_mpu_magn_probe(struct inv_mpu6050_state *st);17 18/**19 * inv_mpu_magn_get_scale() - get magnetometer scale value20 * @st: driver internal state21 *22 * Returns IIO data format.23 */24static 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 33int inv_mpu_magn_set_rate(const struct inv_mpu6050_state *st, int fifo_rate);34 35int inv_mpu_magn_set_orient(struct inv_mpu6050_state *st);36 37int inv_mpu_magn_read(struct inv_mpu6050_state *st, int axis, int *val);38 39#endif /* INV_MPU_MAGN_H_ */40