Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * ADXL345 3-Axis Digital Accelerometer SPI driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/spi/spi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "adxl345.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define ADXL345_MAX_SPI_FREQ_HZ		5000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) static const struct regmap_config adxl345_spi_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	.reg_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	.val_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	 /* Setting bits 7 and 6 enables multiple-byte read */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	.read_flag_mask = BIT(7) | BIT(6),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static int adxl345_spi_probe(struct spi_device *spi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	const struct spi_device_id *id = spi_get_device_id(spi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	/* Bail out if max_speed_hz exceeds 5 MHz */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	if (spi->max_speed_hz > ADXL345_MAX_SPI_FREQ_HZ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		dev_err(&spi->dev, "SPI CLK, %d Hz exceeds 5 MHz\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 			spi->max_speed_hz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	regmap = devm_regmap_init_spi(spi, &adxl345_spi_regmap_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	if (IS_ERR(regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		dev_err(&spi->dev, "Error initializing spi regmap: %ld\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 			PTR_ERR(regmap));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		return PTR_ERR(regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	return adxl345_core_probe(&spi->dev, regmap, id->driver_data, id->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static int adxl345_spi_remove(struct spi_device *spi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	return adxl345_core_remove(&spi->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static const struct spi_device_id adxl345_spi_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	{ "adxl345", ADXL345 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	{ "adxl375", ADXL375 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) MODULE_DEVICE_TABLE(spi, adxl345_spi_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static const struct of_device_id adxl345_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	{ .compatible = "adi,adxl345" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	{ .compatible = "adi,adxl375" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	{ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) MODULE_DEVICE_TABLE(of, adxl345_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static struct spi_driver adxl345_spi_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 		.name	= "adxl345_spi",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 		.of_match_table = adxl345_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	.probe		= adxl345_spi_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	.remove		= adxl345_spi_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	.id_table	= adxl345_spi_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) module_spi_driver(adxl345_spi_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer SPI driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) MODULE_LICENSE("GPL v2");