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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/sec10 */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 width20 */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 device43 * @dev: parent device for this instance44 * @orientation: mounting matrix, flipped axis etc45 * @map: regmap to reach the registers46 * @lock: serialization lock to marshal all requests47 * @irq: the IRQ used for this device48 * @regs: the regulators to power this device49 * @fullscale: the current fullscale setting for the device50 * @lpf: digital low pass filter setting for the device51 * @divisor: base frequency divider: divides 8 or 1 kHz52 * @calibration: the three signed 16-bit calibration settings that53 * get written into the offset registers for each axis to compensate54 * for DC offsets55 * @trig: trigger for the MPU-3050 interrupt, if present56 * @hw_irq_trigger: hardware interrupt trigger is in use57 * @irq_actl: interrupt is active low58 * @irq_latch: latched IRQ, this means that it is a level IRQ59 * @irq_opendrain: the interrupt line shall be configured open drain60 * @pending_fifo_footer: tells us if there is a pending footer in the FIFO61 * that we have to read out first when handling the FIFO62 * @hw_timestamp: latest hardware timestamp from the trigger IRQ, when in63 * use64 * @i2cmux: an I2C mux reflecting the fact that this sensor is a hub with65 * a pass-through I2C interface coming out of it: this device needs to be66 * powered up in order to reach devices on the other side of this mux67 */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);94void mpu3050_common_remove(struct device *dev);95 96/* PM ops */97extern const struct dev_pm_ops mpu3050_dev_pm_ops;98