ef89f4b96a
The ADXL375 is fully register map compatible to the ADXL345 (including the device ID register returning the same value ...). The only difference is the resolution of the acceleration sensor. The ADXL375 can measure up to +-200g of acceleration. Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/ADXL375.PDF Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
/*
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* ADXL345 3-Axis Digital Accelerometer SPI driver
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*
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* Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com>
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*
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* This file is subject to the terms and conditions of version 2 of
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* the GNU General Public License. See the file COPYING in the main
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* directory of this archive for more details.
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*/
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#include <linux/module.h>
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#include <linux/regmap.h>
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#include <linux/spi/spi.h>
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#include "adxl345.h"
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#define ADXL345_MAX_SPI_FREQ_HZ 5000000
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static const struct regmap_config adxl345_spi_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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/* Setting bits 7 and 6 enables multiple-byte read */
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.read_flag_mask = BIT(7) | BIT(6),
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};
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static int adxl345_spi_probe(struct spi_device *spi)
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{
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const struct spi_device_id *id = spi_get_device_id(spi);
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struct regmap *regmap;
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/* Bail out if max_speed_hz exceeds 5 MHz */
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if (spi->max_speed_hz > ADXL345_MAX_SPI_FREQ_HZ) {
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dev_err(&spi->dev, "SPI CLK, %d Hz exceeds 5 MHz\n",
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spi->max_speed_hz);
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return -EINVAL;
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}
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regmap = devm_regmap_init_spi(spi, &adxl345_spi_regmap_config);
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if (IS_ERR(regmap)) {
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dev_err(&spi->dev, "Error initializing spi 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 adxl345_core_probe(&spi->dev, regmap, id->driver_data, id->name);
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}
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static int adxl345_spi_remove(struct spi_device *spi)
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{
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return adxl345_core_remove(&spi->dev);
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}
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static const struct spi_device_id adxl345_spi_id[] = {
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{ "adxl345", ADXL345 },
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{ "adxl375", ADXL375 },
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{ }
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};
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MODULE_DEVICE_TABLE(spi, adxl345_spi_id);
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static const struct of_device_id adxl345_of_match[] = {
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{ .compatible = "adi,adxl345" },
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{ .compatible = "adi,adxl375" },
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{ },
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};
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MODULE_DEVICE_TABLE(of, adxl345_of_match);
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static struct spi_driver adxl345_spi_driver = {
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.driver = {
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.name = "adxl345_spi",
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.of_match_table = adxl345_of_match,
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},
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.probe = adxl345_spi_probe,
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.remove = adxl345_spi_remove,
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.id_table = adxl345_spi_id,
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};
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module_spi_driver(adxl345_spi_driver);
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MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>");
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MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer SPI driver");
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MODULE_LICENSE("GPL v2");
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