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 */
inv_mpu_magn_get_scale(const struct inv_mpu6050_state * st,const struct iio_chan_spec * chan,int * val,int * val2)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_ */
40