86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* ADXL313 3-Axis Digital Accelerometer
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*
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* Copyright (c) 2021 Lucas Stankus <lucas.p.stankus@gmail.com>
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*/
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#ifndef _ADXL313_H_
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#define _ADXL313_H_
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#include <linux/iio/iio.h>
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/* ADXL313 register definitions */
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#define ADXL313_REG_DEVID0 0x00
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#define ADXL313_REG_DEVID1 0x01
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#define ADXL313_REG_PARTID 0x02
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#define ADXL313_REG_XID 0x04
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#define ADXL313_REG_SOFT_RESET 0x18
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#define ADXL313_REG_OFS_AXIS(index) (0x1E + (index))
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#define ADXL313_REG_THRESH_ACT 0x24
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#define ADXL313_REG_ACT_INACT_CTL 0x27
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#define ADXL313_REG_BW_RATE 0x2C
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#define ADXL313_REG_POWER_CTL 0x2D
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#define ADXL313_REG_INT_MAP 0x2F
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#define ADXL313_REG_DATA_FORMAT 0x31
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#define ADXL313_REG_DATA_AXIS(index) (0x32 + ((index) * 2))
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#define ADXL313_REG_FIFO_CTL 0x38
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#define ADXL313_REG_FIFO_STATUS 0x39
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#define ADXL313_DEVID0 0xAD
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#define ADXL313_DEVID0_ADXL312_314 0xE5
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#define ADXL313_DEVID1 0x1D
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#define ADXL313_PARTID 0xCB
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#define ADXL313_SOFT_RESET 0x52
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#define ADXL313_RATE_MSK GENMASK(3, 0)
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#define ADXL313_RATE_BASE 6
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#define ADXL313_POWER_CTL_MSK GENMASK(3, 2)
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#define ADXL313_MEASUREMENT_MODE BIT(3)
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#define ADXL313_RANGE_MSK GENMASK(1, 0)
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#define ADXL313_RANGE_MAX 3
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#define ADXL313_FULL_RES BIT(3)
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#define ADXL313_SPI_3WIRE BIT(6)
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#define ADXL313_I2C_DISABLE BIT(6)
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extern const struct regmap_access_table adxl312_readable_regs_table;
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extern const struct regmap_access_table adxl313_readable_regs_table;
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extern const struct regmap_access_table adxl314_readable_regs_table;
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extern const struct regmap_access_table adxl312_writable_regs_table;
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extern const struct regmap_access_table adxl313_writable_regs_table;
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extern const struct regmap_access_table adxl314_writable_regs_table;
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enum adxl313_device_type {
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ADXL312,
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ADXL313,
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ADXL314,
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};
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struct adxl313_data {
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struct regmap *regmap;
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const struct adxl313_chip_info *chip_info;
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struct mutex lock; /* lock to protect transf_buf */
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__le16 transf_buf __aligned(IIO_DMA_MINALIGN);
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};
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struct adxl313_chip_info {
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const char *name;
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enum adxl313_device_type type;
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int scale_factor;
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bool variable_range;
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bool soft_reset;
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int (*check_id)(struct device *dev, struct adxl313_data *data);
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};
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extern const struct adxl313_chip_info adxl31x_chip_info[];
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int adxl313_core_probe(struct device *dev,
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struct regmap *regmap,
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const struct adxl313_chip_info *chip_info,
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int (*setup)(struct device *, struct regmap *));
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#endif /* _ADXL313_H_ */
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