70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Bosch triaxial acceleration sensor
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*
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* Copyright (c) 2025 Petre Rodan <petre.rodan@subdimension.ro>
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*
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* Datasheet: https://media.digikey.com/pdf/Data%20Sheets/Bosch/BMA220.pdf
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* I2C address is either 0x0b or 0x0a depending on CSB (pin 10)
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*/
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#include <linux/bitfield.h>
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#include <linux/i2c.h>
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#include <linux/mod_devicetable.h>
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#include <linux/module.h>
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#include <linux/regmap.h>
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#include <linux/types.h>
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#include "bma220.h"
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static int bma220_set_wdt(struct regmap *regmap, const u8 val)
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{
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return regmap_update_bits(regmap, BMA220_REG_WDT, BMA220_WDT_MASK,
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FIELD_PREP(BMA220_WDT_MASK, val));
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}
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static int bma220_i2c_probe(struct i2c_client *client)
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{
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struct regmap *regmap;
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int ret;
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regmap = devm_regmap_init_i2c(client, &bma220_i2c_regmap_config);
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if (IS_ERR(regmap))
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return dev_err_probe(&client->dev, PTR_ERR(regmap),
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"failed to create regmap\n");
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ret = bma220_common_probe(&client->dev, regmap, client->irq);
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if (ret)
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return ret;
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return bma220_set_wdt(regmap, BMA220_WDT_1MS);
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}
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static const struct of_device_id bma220_i2c_match[] = {
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{ .compatible = "bosch,bma220" },
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{ }
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};
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MODULE_DEVICE_TABLE(of, bma220_i2c_match);
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static const struct i2c_device_id bma220_i2c_id[] = {
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{ "bma220" },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, bma220_i2c_id);
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static struct i2c_driver bma220_i2c_driver = {
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.driver = {
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.name = "bma220_i2c",
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.pm = pm_sleep_ptr(&bma220_pm_ops),
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.of_match_table = bma220_i2c_match,
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},
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.probe = bma220_i2c_probe,
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.id_table = bma220_i2c_id,
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};
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module_i2c_driver(bma220_i2c_driver);
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MODULE_AUTHOR("Petre Rodan <petre.rodan@subdimension.ro>");
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MODULE_DESCRIPTION("Bosch triaxial acceleration sensor i2c driver");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS("IIO_BOSCH_BMA220");
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