iio: gyro: Add itg3200
This patch adds support for the InvenSense itg3200. The itg3200 is a three-axis gyro with 16-bit ADC and I2C interface. Signed-off-by: Manuel Stahl <manuel.stahl@iis.fraunhofer.de> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Manuel Stahl
committed by
Jonathan Cameron
Jonathan Cameron
parent
420b0fcb52
commit
9dbf091da0
154
include/linux/iio/gyro/itg3200.h
Normal file
154
include/linux/iio/gyro/itg3200.h
Normal file
@@ -0,0 +1,154 @@
|
||||
/*
|
||||
* 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>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*/
|
||||
|
||||
#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;
|
||||
};
|
||||
|
||||
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_RING_BUFFER */
|
||||
|
||||
#endif /* ITG3200_H_ */
|
||||
Reference in New Issue
Block a user