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_ */ 40