| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | /* |
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| 3 | * Support for I2C-interfaced Bosch BNO055 IMU. |
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| 4 | * |
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| 5 | * Copyright (C) 2021-2022 Istituto Italiano di Tecnologia |
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| 6 | * Electronic Design Laboratory |
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| 7 | * Written by Andrea Merello <andrea.merello@iit.it> |
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| 8 | */ |
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| 9 | |
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| 10 | #include <linux/i2c.h> |
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| 11 | #include <linux/mod_devicetable.h> |
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| 12 | #include <linux/module.h> |
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| 13 | #include <linux/regmap.h> |
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| 14 | |
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| 15 | #include "bno055.h" |
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| 16 | |
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| 17 | #define BNO055_I2C_XFER_BURST_BREAK_THRESHOLD 3 |
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| 18 | |
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| 19 | static int bno055_i2c_probe(struct i2c_client *client) |
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| 20 | { |
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| 21 | struct regmap *regmap; |
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| 22 | |
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| 23 | regmap = devm_regmap_init_i2c(client, &bno055_regmap_config); |
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| 24 | if (IS_ERR(ptr: regmap)) |
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| 25 | return dev_err_probe(dev: &client->dev, err: PTR_ERR(ptr: regmap), |
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| 26 | fmt: "Unable to init register map" ); |
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| 27 | |
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| 28 | return bno055_probe(dev: &client->dev, regmap, |
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| 29 | BNO055_I2C_XFER_BURST_BREAK_THRESHOLD, sw_reset: true); |
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| 30 | } |
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| 31 | |
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| 32 | static const struct i2c_device_id bno055_i2c_id[] = { |
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| 33 | {"bno055" , 0}, |
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| 34 | { } |
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| 35 | }; |
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| 36 | MODULE_DEVICE_TABLE(i2c, bno055_i2c_id); |
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| 37 | |
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| 38 | static const struct of_device_id __maybe_unused bno055_i2c_of_match[] = { |
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| 39 | { .compatible = "bosch,bno055" }, |
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| 40 | { } |
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| 41 | }; |
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| 42 | MODULE_DEVICE_TABLE(of, bno055_i2c_of_match); |
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| 43 | |
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| 44 | static struct i2c_driver bno055_driver = { |
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| 45 | .driver = { |
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| 46 | .name = "bno055-i2c" , |
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| 47 | .of_match_table = bno055_i2c_of_match, |
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| 48 | }, |
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| 49 | .probe = bno055_i2c_probe, |
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| 50 | .id_table = bno055_i2c_id, |
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| 51 | }; |
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| 52 | module_i2c_driver(bno055_driver); |
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| 53 | |
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| 54 | MODULE_AUTHOR("Andrea Merello" ); |
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| 55 | MODULE_DESCRIPTION("Bosch BNO055 I2C interface" ); |
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| 56 | MODULE_IMPORT_NS(IIO_BNO055); |
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| 57 | MODULE_LICENSE("GPL" ); |
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| 58 | |
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