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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | /* * 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 [31mCONFIG_IIO_BUFFER[0m 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_ */ |