Training courses

Kernel and Embedded Linux

Bootlin training courses

Embedded Linux, kernel,
Yocto Project, Buildroot, real-time,
graphics, boot time, debugging...

Bootlin logo

Elixir Cross Referencer

Open Menu /include/linux/iio/gyro/itg3200.h 
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * itg3200.h -- support InvenSense ITG3200
 *              Digital 3-Axis Gyroscope driver
 *
 * Copyright (c) 2011 Christian Strobel <christian.strobel@iis.fraunhofer.de>
 * Copyright (c) 2011 Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
 * Copyright (c) 2012 Thorsten Nowak <thorsten.nowak@iis.fraunhofer.de>
 */

#ifndef I2C_ITG3200_H_
#define I2C_ITG3200_H_

#include <linux/iio/iio.h>

/* Register with I2C address (34h) */
#define ITG3200_REG_ADDRESS		0x00

/* Sample rate divider
 * Range: 0 to 255
 * Default value: 0x00 */
#define ITG3200_REG_SAMPLE_RATE_DIV	0x15

/* Digital low pass filter settings */
#define ITG3200_REG_DLPF		0x16
/* DLPF full scale range */
#define ITG3200_DLPF_FS_SEL_2000	0x18
/* Bandwidth (Hz) and internal sample rate
 * (kHz) of DLPF */
#define ITG3200_DLPF_256_8		0x00
#define ITG3200_DLPF_188_1		0x01
#define ITG3200_DLPF_98_1		0x02
#define ITG3200_DLPF_42_1		0x03
#define ITG3200_DLPF_20_1		0x04
#define ITG3200_DLPF_10_1		0x05
#define ITG3200_DLPF_5_1		0x06

#define ITG3200_DLPF_CFG_MASK		0x07

/* Configuration for interrupt operations */
#define ITG3200_REG_IRQ_CONFIG		0x17
/* Logic level */
#define ITG3200_IRQ_ACTIVE_LOW		0x80
#define ITG3200_IRQ_ACTIVE_HIGH		0x00
/* Drive type */
#define ITG3200_IRQ_OPEN_DRAIN		0x40
#define ITG3200_IRQ_PUSH_PULL		0x00
/* Latch mode */
#define ITG3200_IRQ_LATCH_UNTIL_CLEARED	0x20
#define ITG3200_IRQ_LATCH_50US_PULSE	0x00
/* Latch clear method */
#define ITG3200_IRQ_LATCH_CLEAR_ANY	0x10
#define ITG3200_IRQ_LATCH_CLEAR_STATUS	0x00
/* Enable interrupt when device is ready */
#define ITG3200_IRQ_DEVICE_RDY_ENABLE	0x04
/* Enable interrupt when data is available */
#define ITG3200_IRQ_DATA_RDY_ENABLE	0x01

/* Determine the status of ITG-3200 interrupts */
#define ITG3200_REG_IRQ_STATUS		0x1A
/* Status of 'device is ready'-interrupt */
#define ITG3200_IRQ_DEVICE_RDY_STATUS	0x04
/* Status of 'data is available'-interrupt */
#define ITG3200_IRQ_DATA_RDY_STATUS	0x01

/* Sensor registers */
#define ITG3200_REG_TEMP_OUT_H		0x1B
#define ITG3200_REG_TEMP_OUT_L		0x1C
#define ITG3200_REG_GYRO_XOUT_H		0x1D
#define ITG3200_REG_GYRO_XOUT_L		0x1E
#define ITG3200_REG_GYRO_YOUT_H		0x1F
#define ITG3200_REG_GYRO_YOUT_L		0x20
#define ITG3200_REG_GYRO_ZOUT_H		0x21
#define ITG3200_REG_GYRO_ZOUT_L		0x22

/* Power management */
#define ITG3200_REG_POWER_MANAGEMENT	0x3E
/* Reset device and internal registers to the
 * power-up-default settings */
#define ITG3200_RESET			0x80
/* Enable low power sleep mode */
#define ITG3200_SLEEP			0x40
/* Put according gyroscope in standby mode */
#define ITG3200_STANDBY_GYRO_X		0x20
#define ITG3200_STANDBY_GYRO_Y		0x10
#define ITG3200_STANDBY_GYRO_Z		0x08
/* Determine the device clock source */
#define ITG3200_CLK_INTERNAL		0x00
#define ITG3200_CLK_GYRO_X		0x01
#define ITG3200_CLK_GYRO_Y		0x02
#define ITG3200_CLK_GYRO_Z		0x03
#define ITG3200_CLK_EXT_32K		0x04
#define ITG3200_CLK_EXT_19M		0x05


/**
 * struct itg3200 - device instance specific data
 * @i2c:    actual i2c_client
 * @trig:   data ready trigger from itg3200 pin
 **/
struct itg3200 {
	struct i2c_client	*i2c;
	struct iio_trigger	*trig;
	struct iio_mount_matrix orientation;
};

enum ITG3200_SCAN_INDEX {
	ITG3200_SCAN_TEMP,
	ITG3200_SCAN_GYRO_X,
	ITG3200_SCAN_GYRO_Y,
	ITG3200_SCAN_GYRO_Z,
	ITG3200_SCAN_ELEMENTS,
};

int itg3200_write_reg_8(struct iio_dev *indio_dev,
		u8 reg_address, u8 val);

int itg3200_read_reg_8(struct iio_dev *indio_dev,
		u8 reg_address, u8 *val);


#ifdef CONFIG_IIO_BUFFER

void itg3200_remove_trigger(struct iio_dev *indio_dev);
int itg3200_probe_trigger(struct iio_dev *indio_dev);

int itg3200_buffer_configure(struct iio_dev *indio_dev);
void itg3200_buffer_unconfigure(struct iio_dev *indio_dev);

#else /* CONFIG_IIO_BUFFER */

static inline void itg3200_remove_trigger(struct iio_dev *indio_dev)
{
}

static inline int itg3200_probe_trigger(struct iio_dev *indio_dev)
{
	return 0;
}

static inline int itg3200_buffer_configure(struct iio_dev *indio_dev)
{
	return 0;
}

static inline void itg3200_buffer_unconfigure(struct iio_dev *indio_dev)
{
}

#endif  /* CONFIG_IIO_BUFFER */

#endif /* ITG3200_H_ */