98 lines
2.7 KiB
C
98 lines
2.7 KiB
C
// 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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* Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADXL313.pdf
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*/
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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 "adxl313.h"
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static const struct regmap_config adxl31x_i2c_regmap_config[] = {
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[ADXL312] = {
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.reg_bits = 8,
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.val_bits = 8,
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.rd_table = &adxl312_readable_regs_table,
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.wr_table = &adxl312_writable_regs_table,
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.max_register = 0x39,
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},
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[ADXL313] = {
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.reg_bits = 8,
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.val_bits = 8,
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.rd_table = &adxl313_readable_regs_table,
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.wr_table = &adxl313_writable_regs_table,
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.max_register = 0x39,
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},
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[ADXL314] = {
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.reg_bits = 8,
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.val_bits = 8,
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.rd_table = &adxl314_readable_regs_table,
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.wr_table = &adxl314_writable_regs_table,
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.max_register = 0x39,
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},
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};
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static const struct i2c_device_id adxl313_i2c_id[] = {
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{ .name = "adxl312", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL312] },
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{ .name = "adxl313", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL313] },
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{ .name = "adxl314", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL314] },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, adxl313_i2c_id);
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static const struct of_device_id adxl313_of_match[] = {
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{ .compatible = "adi,adxl312", .data = &adxl31x_chip_info[ADXL312] },
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{ .compatible = "adi,adxl313", .data = &adxl31x_chip_info[ADXL313] },
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{ .compatible = "adi,adxl314", .data = &adxl31x_chip_info[ADXL314] },
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{ }
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};
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MODULE_DEVICE_TABLE(of, adxl313_of_match);
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static int adxl313_i2c_probe(struct i2c_client *client)
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{
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const struct adxl313_chip_info *chip_data;
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struct regmap *regmap;
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/*
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* Retrieves device specific data as a pointer to a
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* adxl313_chip_info structure
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*/
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chip_data = device_get_match_data(&client->dev);
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if (!chip_data)
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chip_data = (const struct adxl313_chip_info *)i2c_match_id(adxl313_i2c_id, client)->driver_data;
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regmap = devm_regmap_init_i2c(client,
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&adxl31x_i2c_regmap_config[chip_data->type]);
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if (IS_ERR(regmap)) {
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dev_err(&client->dev, "Error initializing i2c regmap: %ld\n",
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PTR_ERR(regmap));
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return PTR_ERR(regmap);
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}
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return adxl313_core_probe(&client->dev, regmap, chip_data, NULL);
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}
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static struct i2c_driver adxl313_i2c_driver = {
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.driver = {
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.name = "adxl313_i2c",
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.of_match_table = adxl313_of_match,
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},
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.probe = adxl313_i2c_probe,
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.id_table = adxl313_i2c_id,
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};
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module_i2c_driver(adxl313_i2c_driver);
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MODULE_AUTHOR("Lucas Stankus <lucas.p.stankus@gmail.com>");
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MODULE_DESCRIPTION("ADXL313 3-Axis Digital Accelerometer I2C driver");
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MODULE_LICENSE("GPL v2");
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MODULE_IMPORT_NS(IIO_ADXL313);
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