| /* |
| * 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_BUFFER */ |
| |
| #endif /* ITG3200_H_ */ |
