1 // SPDX-License-Identifier: GPL-2.0-only
3 * ADXL313 3-Axis Digital Accelerometer
5 * Copyright (c) 2021 Lucas Stankus <lucas.p.stankus@gmail.com>
7 * Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADXL313.pdf
10 #include <linux/mod_devicetable.h>
11 #include <linux/module.h>
12 #include <linux/regmap.h>
13 #include <linux/spi/spi.h>
17 static const struct regmap_config adxl313_spi_regmap_config = {
20 .rd_table = &adxl313_readable_regs_table,
21 .wr_table = &adxl313_writable_regs_table,
23 /* Setting bits 7 and 6 enables multiple-byte read */
24 .read_flag_mask = BIT(7) | BIT(6),
27 static int adxl313_spi_setup(struct device *dev, struct regmap *regmap)
29 struct spi_device *spi = container_of(dev, struct spi_device, dev);
32 if (spi->mode & SPI_3WIRE) {
33 ret = regmap_write(regmap, ADXL313_REG_DATA_FORMAT,
39 return regmap_update_bits(regmap, ADXL313_REG_POWER_CTL,
40 ADXL313_I2C_DISABLE, ADXL313_I2C_DISABLE);
43 static int adxl313_spi_probe(struct spi_device *spi)
45 const struct spi_device_id *id = spi_get_device_id(spi);
46 struct regmap *regmap;
49 spi->mode |= SPI_MODE_3;
54 regmap = devm_regmap_init_spi(spi, &adxl313_spi_regmap_config);
56 dev_err(&spi->dev, "Error initializing spi regmap: %ld\n",
58 return PTR_ERR(regmap);
61 return adxl313_core_probe(&spi->dev, regmap, id->name,
65 static const struct spi_device_id adxl313_spi_id[] = {
70 MODULE_DEVICE_TABLE(spi, adxl313_spi_id);
72 static const struct of_device_id adxl313_of_match[] = {
73 { .compatible = "adi,adxl313" },
77 MODULE_DEVICE_TABLE(of, adxl313_of_match);
79 static struct spi_driver adxl313_spi_driver = {
81 .name = "adxl313_spi",
82 .of_match_table = adxl313_of_match,
84 .probe = adxl313_spi_probe,
85 .id_table = adxl313_spi_id,
88 module_spi_driver(adxl313_spi_driver);
90 MODULE_AUTHOR("Lucas Stankus <lucas.p.stankus@gmail.com>");
91 MODULE_DESCRIPTION("ADXL313 3-Axis Digital Accelerometer SPI driver");
92 MODULE_LICENSE("GPL v2");
93 MODULE_IMPORT_NS(IIO_ADXL313);