itg3200.h (4173B)
1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * itg3200.h -- support InvenSense ITG3200 4 * Digital 3-Axis Gyroscope driver 5 * 6 * Copyright (c) 2011 Christian Strobel <christian.strobel@iis.fraunhofer.de> 7 * Copyright (c) 2011 Manuel Stahl <manuel.stahl@iis.fraunhofer.de> 8 * Copyright (c) 2012 Thorsten Nowak <thorsten.nowak@iis.fraunhofer.de> 9 */ 10 11#ifndef I2C_ITG3200_H_ 12#define I2C_ITG3200_H_ 13 14#include <linux/iio/iio.h> 15 16/* Register with I2C address (34h) */ 17#define ITG3200_REG_ADDRESS 0x00 18 19/* Sample rate divider 20 * Range: 0 to 255 21 * Default value: 0x00 */ 22#define ITG3200_REG_SAMPLE_RATE_DIV 0x15 23 24/* Digital low pass filter settings */ 25#define ITG3200_REG_DLPF 0x16 26/* DLPF full scale range */ 27#define ITG3200_DLPF_FS_SEL_2000 0x18 28/* Bandwidth (Hz) and internal sample rate 29 * (kHz) of DLPF */ 30#define ITG3200_DLPF_256_8 0x00 31#define ITG3200_DLPF_188_1 0x01 32#define ITG3200_DLPF_98_1 0x02 33#define ITG3200_DLPF_42_1 0x03 34#define ITG3200_DLPF_20_1 0x04 35#define ITG3200_DLPF_10_1 0x05 36#define ITG3200_DLPF_5_1 0x06 37 38#define ITG3200_DLPF_CFG_MASK 0x07 39 40/* Configuration for interrupt operations */ 41#define ITG3200_REG_IRQ_CONFIG 0x17 42/* Logic level */ 43#define ITG3200_IRQ_ACTIVE_LOW 0x80 44#define ITG3200_IRQ_ACTIVE_HIGH 0x00 45/* Drive type */ 46#define ITG3200_IRQ_OPEN_DRAIN 0x40 47#define ITG3200_IRQ_PUSH_PULL 0x00 48/* Latch mode */ 49#define ITG3200_IRQ_LATCH_UNTIL_CLEARED 0x20 50#define ITG3200_IRQ_LATCH_50US_PULSE 0x00 51/* Latch clear method */ 52#define ITG3200_IRQ_LATCH_CLEAR_ANY 0x10 53#define ITG3200_IRQ_LATCH_CLEAR_STATUS 0x00 54/* Enable interrupt when device is ready */ 55#define ITG3200_IRQ_DEVICE_RDY_ENABLE 0x04 56/* Enable interrupt when data is available */ 57#define ITG3200_IRQ_DATA_RDY_ENABLE 0x01 58 59/* Determine the status of ITG-3200 interrupts */ 60#define ITG3200_REG_IRQ_STATUS 0x1A 61/* Status of 'device is ready'-interrupt */ 62#define ITG3200_IRQ_DEVICE_RDY_STATUS 0x04 63/* Status of 'data is available'-interrupt */ 64#define ITG3200_IRQ_DATA_RDY_STATUS 0x01 65 66/* Sensor registers */ 67#define ITG3200_REG_TEMP_OUT_H 0x1B 68#define ITG3200_REG_TEMP_OUT_L 0x1C 69#define ITG3200_REG_GYRO_XOUT_H 0x1D 70#define ITG3200_REG_GYRO_XOUT_L 0x1E 71#define ITG3200_REG_GYRO_YOUT_H 0x1F 72#define ITG3200_REG_GYRO_YOUT_L 0x20 73#define ITG3200_REG_GYRO_ZOUT_H 0x21 74#define ITG3200_REG_GYRO_ZOUT_L 0x22 75 76/* Power management */ 77#define ITG3200_REG_POWER_MANAGEMENT 0x3E 78/* Reset device and internal registers to the 79 * power-up-default settings */ 80#define ITG3200_RESET 0x80 81/* Enable low power sleep mode */ 82#define ITG3200_SLEEP 0x40 83/* Put according gyroscope in standby mode */ 84#define ITG3200_STANDBY_GYRO_X 0x20 85#define ITG3200_STANDBY_GYRO_Y 0x10 86#define ITG3200_STANDBY_GYRO_Z 0x08 87/* Determine the device clock source */ 88#define ITG3200_CLK_INTERNAL 0x00 89#define ITG3200_CLK_GYRO_X 0x01 90#define ITG3200_CLK_GYRO_Y 0x02 91#define ITG3200_CLK_GYRO_Z 0x03 92#define ITG3200_CLK_EXT_32K 0x04 93#define ITG3200_CLK_EXT_19M 0x05 94 95 96/** 97 * struct itg3200 - device instance specific data 98 * @i2c: actual i2c_client 99 * @trig: data ready trigger from itg3200 pin 100 **/ 101struct itg3200 { 102 struct i2c_client *i2c; 103 struct iio_trigger *trig; 104 struct iio_mount_matrix orientation; 105}; 106 107enum ITG3200_SCAN_INDEX { 108 ITG3200_SCAN_TEMP, 109 ITG3200_SCAN_GYRO_X, 110 ITG3200_SCAN_GYRO_Y, 111 ITG3200_SCAN_GYRO_Z, 112 ITG3200_SCAN_ELEMENTS, 113}; 114 115int itg3200_write_reg_8(struct iio_dev *indio_dev, 116 u8 reg_address, u8 val); 117 118int itg3200_read_reg_8(struct iio_dev *indio_dev, 119 u8 reg_address, u8 *val); 120 121 122#ifdef CONFIG_IIO_BUFFER 123 124void itg3200_remove_trigger(struct iio_dev *indio_dev); 125int itg3200_probe_trigger(struct iio_dev *indio_dev); 126 127int itg3200_buffer_configure(struct iio_dev *indio_dev); 128void itg3200_buffer_unconfigure(struct iio_dev *indio_dev); 129 130#else /* CONFIG_IIO_BUFFER */ 131 132static inline void itg3200_remove_trigger(struct iio_dev *indio_dev) 133{ 134} 135 136static inline int itg3200_probe_trigger(struct iio_dev *indio_dev) 137{ 138 return 0; 139} 140 141static inline int itg3200_buffer_configure(struct iio_dev *indio_dev) 142{ 143 return 0; 144} 145 146static inline void itg3200_buffer_unconfigure(struct iio_dev *indio_dev) 147{ 148} 149 150#endif /* CONFIG_IIO_BUFFER */ 151 152#endif /* ITG3200_H_ */