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97 lines
2.7 KiB
97 lines
2.7 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#include <linux/iio/iio.h> |
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#include <linux/mutex.h> |
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#include <linux/regmap.h> |
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#include <linux/regulator/consumer.h> |
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#include <linux/i2c.h> |
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/** |
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* enum mpu3050_fullscale - indicates the full range of the sensor in deg/sec |
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*/ |
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enum mpu3050_fullscale { |
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FS_250_DPS = 0, |
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FS_500_DPS, |
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FS_1000_DPS, |
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FS_2000_DPS, |
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}; |
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/** |
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* enum mpu3050_lpf - indicates the low pass filter width |
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*/ |
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enum mpu3050_lpf { |
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/* This implicity sets sample frequency to 8 kHz */ |
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LPF_256_HZ_NOLPF = 0, |
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/* All others sets the sample frequency to 1 kHz */ |
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LPF_188_HZ, |
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LPF_98_HZ, |
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LPF_42_HZ, |
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LPF_20_HZ, |
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LPF_10_HZ, |
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LPF_5_HZ, |
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LPF_2100_HZ_NOLPF, |
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}; |
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enum mpu3050_axis { |
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AXIS_X = 0, |
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AXIS_Y, |
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AXIS_Z, |
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AXIS_MAX, |
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}; |
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/** |
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* struct mpu3050 - instance state container for the device |
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* @dev: parent device for this instance |
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* @orientation: mounting matrix, flipped axis etc |
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* @map: regmap to reach the registers |
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* @lock: serialization lock to marshal all requests |
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* @irq: the IRQ used for this device |
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* @regs: the regulators to power this device |
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* @fullscale: the current fullscale setting for the device |
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* @lpf: digital low pass filter setting for the device |
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* @divisor: base frequency divider: divides 8 or 1 kHz |
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* @calibration: the three signed 16-bit calibration settings that |
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* get written into the offset registers for each axis to compensate |
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* for DC offsets |
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* @trig: trigger for the MPU-3050 interrupt, if present |
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* @hw_irq_trigger: hardware interrupt trigger is in use |
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* @irq_actl: interrupt is active low |
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* @irq_latch: latched IRQ, this means that it is a level IRQ |
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* @irq_opendrain: the interrupt line shall be configured open drain |
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* @pending_fifo_footer: tells us if there is a pending footer in the FIFO |
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* that we have to read out first when handling the FIFO |
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* @hw_timestamp: latest hardware timestamp from the trigger IRQ, when in |
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* use |
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* @i2cmux: an I2C mux reflecting the fact that this sensor is a hub with |
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* a pass-through I2C interface coming out of it: this device needs to be |
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* powered up in order to reach devices on the other side of this mux |
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*/ |
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struct mpu3050 { |
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struct device *dev; |
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struct iio_mount_matrix orientation; |
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struct regmap *map; |
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struct mutex lock; |
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int irq; |
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struct regulator_bulk_data regs[2]; |
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enum mpu3050_fullscale fullscale; |
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enum mpu3050_lpf lpf; |
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u8 divisor; |
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s16 calibration[3]; |
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struct iio_trigger *trig; |
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bool hw_irq_trigger; |
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bool irq_actl; |
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bool irq_latch; |
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bool irq_opendrain; |
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bool pending_fifo_footer; |
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s64 hw_timestamp; |
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struct i2c_mux_core *i2cmux; |
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}; |
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/* Probe called from different transports */ |
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int mpu3050_common_probe(struct device *dev, |
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struct regmap *map, |
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int irq, |
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const char *name); |
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int mpu3050_common_remove(struct device *dev); |
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/* PM ops */ |
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extern const struct dev_pm_ops mpu3050_dev_pm_ops;
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