1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * ADXL355 3-Axis Digital Accelerometer SPI driver 4 * 5 * Copyright (c) 2021 Puranjay Mohan <puranjay12@gmail.com> 6 */ 7 8 #include <linux/module.h> 9 #include <linux/mod_devicetable.h> 10 #include <linux/regmap.h> 11 #include <linux/spi/spi.h> 12 #include <linux/property.h> 13 14 #include "adxl355.h" 15 16 static const struct regmap_config adxl355_spi_regmap_config = { 17 .reg_bits = 7, 18 .pad_bits = 1, 19 .val_bits = 8, 20 .read_flag_mask = BIT(0), 21 .max_register = 0x2F, 22 .rd_table = &adxl355_readable_regs_tbl, 23 .wr_table = &adxl355_writeable_regs_tbl, 24 }; 25 26 static int adxl355_spi_probe(struct spi_device *spi) 27 { 28 const struct adxl355_chip_info *chip_data; 29 struct regmap *regmap; 30 31 chip_data = spi_get_device_match_data(spi); 32 if (!chip_data) 33 return -EINVAL; 34 35 regmap = devm_regmap_init_spi(spi, &adxl355_spi_regmap_config); 36 if (IS_ERR(regmap)) { 37 dev_err(&spi->dev, "Error initializing spi regmap: %ld\n", 38 PTR_ERR(regmap)); 39 40 return PTR_ERR(regmap); 41 } 42 43 return adxl355_core_probe(&spi->dev, regmap, chip_data); 44 } 45 46 static const struct spi_device_id adxl355_spi_id[] = { 47 { "adxl355", (kernel_ulong_t)&adxl35x_chip_info[ADXL355] }, 48 { "adxl359", (kernel_ulong_t)&adxl35x_chip_info[ADXL359] }, 49 { } 50 }; 51 MODULE_DEVICE_TABLE(spi, adxl355_spi_id); 52 53 static const struct of_device_id adxl355_of_match[] = { 54 { .compatible = "adi,adxl355", .data = &adxl35x_chip_info[ADXL355] }, 55 { .compatible = "adi,adxl359", .data = &adxl35x_chip_info[ADXL359] }, 56 { } 57 }; 58 MODULE_DEVICE_TABLE(of, adxl355_of_match); 59 60 static struct spi_driver adxl355_spi_driver = { 61 .driver = { 62 .name = "adxl355_spi", 63 .of_match_table = adxl355_of_match, 64 }, 65 .probe = adxl355_spi_probe, 66 .id_table = adxl355_spi_id, 67 }; 68 module_spi_driver(adxl355_spi_driver); 69 70 MODULE_AUTHOR("Puranjay Mohan <puranjay12@gmail.com>"); 71 MODULE_DESCRIPTION("ADXL355 3-Axis Digital Accelerometer SPI driver"); 72 MODULE_LICENSE("GPL v2"); 73 MODULE_IMPORT_NS(IIO_ADXL355); 74