LXR linux/drivers/iio/gyro/mpu3050.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#include <linux/iio/iio.h>
   3#include <linux/mutex.h>
   4#include <linux/regmap.h>
   5#include <linux/regulator/consumer.h>
   6#include <linux/i2c.h>
   7
   8/**
   9 * enum mpu3050_fullscale - indicates the full range of the sensor in deg/sec
  10 */
  11enum mpu3050_fullscale {
  12        FS_250_DPS = 0,
  13        FS_500_DPS,
  14        FS_1000_DPS,
  15        FS_2000_DPS,
  16};
  17
  18/**
  19 * enum mpu3050_lpf - indicates the low pass filter width
  20 */
  21enum mpu3050_lpf {
  22        /* This implicity sets sample frequency to 8 kHz */
  23        LPF_256_HZ_NOLPF = 0,
  24        /* All others sets the sample frequency to 1 kHz */
  25        LPF_188_HZ,
  26        LPF_98_HZ,
  27        LPF_42_HZ,
  28        LPF_20_HZ,
  29        LPF_10_HZ,
  30        LPF_5_HZ,
  31        LPF_2100_HZ_NOLPF,
  32};
  33
  34enum mpu3050_axis {
  35        AXIS_X = 0,
  36        AXIS_Y,
  37        AXIS_Z,
  38        AXIS_MAX,
  39};
  40
  41/**
  42 * struct mpu3050 - instance state container for the device
  43 * @dev: parent device for this instance
  44 * @orientation: mounting matrix, flipped axis etc
  45 * @map: regmap to reach the registers
  46 * @lock: serialization lock to marshal all requests
  47 * @irq: the IRQ used for this device
  48 * @regs: the regulators to power this device
  49 * @fullscale: the current fullscale setting for the device
  50 * @lpf: digital low pass filter setting for the device
  51 * @divisor: base frequency divider: divides 8 or 1 kHz
  52 * @calibration: the three signed 16-bit calibration settings that
  53 * get written into the offset registers for each axis to compensate
  54 * for DC offsets
  55 * @trig: trigger for the MPU-3050 interrupt, if present
  56 * @hw_irq_trigger: hardware interrupt trigger is in use
  57 * @irq_actl: interrupt is active low
  58 * @irq_latch: latched IRQ, this means that it is a level IRQ
  59 * @irq_opendrain: the interrupt line shall be configured open drain
  60 * @pending_fifo_footer: tells us if there is a pending footer in the FIFO
  61 * that we have to read out first when handling the FIFO
  62 * @hw_timestamp: latest hardware timestamp from the trigger IRQ, when in
  63 * use
  64 * @i2cmux: an I2C mux reflecting the fact that this sensor is a hub with
  65 * a pass-through I2C interface coming out of it: this device needs to be
  66 * powered up in order to reach devices on the other side of this mux
  67 */
  68struct mpu3050 {
  69        struct device *dev;
  70        struct iio_mount_matrix orientation;
  71        struct regmap *map;
  72        struct mutex lock;
  73        int irq;
  74        struct regulator_bulk_data regs[2];
  75        enum mpu3050_fullscale fullscale;
  76        enum mpu3050_lpf lpf;
  77        u8 divisor;
  78        s16 calibration[3];
  79        struct iio_trigger *trig;
  80        bool hw_irq_trigger;
  81        bool irq_actl;
  82        bool irq_latch;
  83        bool irq_opendrain;
  84        bool pending_fifo_footer;
  85        s64 hw_timestamp;
  86        struct i2c_mux_core *i2cmux;
  87};
  88
  89/* Probe called from different transports */
  90int mpu3050_common_probe(struct device *dev,
  91                         struct regmap *map,
  92                         int irq,
  93                         const char *name);
  94int mpu3050_common_remove(struct device *dev);
  95
  96/* PM ops */
  97extern const struct dev_pm_ops mpu3050_dev_pm_ops;
  98