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af38b0f691
Add the possibility to delay FIFO access when SPI is used. According to the datasheet this is needed for the adxl345. When initialization happens over SPI the need for delay is to be signalized, and the delay will be used. Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com> Link: https://patch.msgid.link/20241228232949.72487-3-l.rubusch@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* ADXL345 3-Axis Digital Accelerometer I2C 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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* 7-bit I2C slave address: 0x1D (ALT ADDRESS pin tied to VDDIO) or
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* 0x53 (ALT ADDRESS pin grounded)
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*/
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/regmap.h>
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#include "adxl345.h"
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static const struct regmap_config adxl345_i2c_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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};
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static int adxl345_i2c_probe(struct i2c_client *client)
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{
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struct regmap *regmap;
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regmap = devm_regmap_init_i2c(client, &adxl345_i2c_regmap_config);
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if (IS_ERR(regmap))
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return dev_err_probe(&client->dev, PTR_ERR(regmap), "Error initializing regmap\n");
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return adxl345_core_probe(&client->dev, regmap, false, NULL);
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}
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static const struct adxl345_chip_info adxl345_i2c_info = {
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.name = "adxl345",
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.uscale = ADXL345_USCALE,
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};
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static const struct adxl345_chip_info adxl375_i2c_info = {
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.name = "adxl375",
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.uscale = ADXL375_USCALE,
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};
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static const struct i2c_device_id adxl345_i2c_id[] = {
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{ "adxl345", (kernel_ulong_t)&adxl345_i2c_info },
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{ "adxl375", (kernel_ulong_t)&adxl375_i2c_info },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, adxl345_i2c_id);
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static const struct of_device_id adxl345_of_match[] = {
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{ .compatible = "adi,adxl345", .data = &adxl345_i2c_info },
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{ .compatible = "adi,adxl375", .data = &adxl375_i2c_info },
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{ }
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};
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MODULE_DEVICE_TABLE(of, adxl345_of_match);
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static const struct acpi_device_id adxl345_acpi_match[] = {
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{ "ADS0345", (kernel_ulong_t)&adxl345_i2c_info },
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{ }
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};
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MODULE_DEVICE_TABLE(acpi, adxl345_acpi_match);
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static struct i2c_driver adxl345_i2c_driver = {
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.driver = {
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.name = "adxl345_i2c",
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.of_match_table = adxl345_of_match,
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.acpi_match_table = adxl345_acpi_match,
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},
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.probe = adxl345_i2c_probe,
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.id_table = adxl345_i2c_id,
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};
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module_i2c_driver(adxl345_i2c_driver);
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MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>");
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MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer I2C driver");
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MODULE_LICENSE("GPL v2");
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MODULE_IMPORT_NS("IIO_ADXL345");
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