drivers/iio/accel/adxl355_i2c.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * ADXL355 3-Axis Digital Accelerometer I2C driver
   4  *
   5  * Copyright (c) 2021 Puranjay Mohan <puranjay12@gmail.com>
   6  */
   7
   8 #include <linux/i2c.h>
   9 #include <linux/module.h>
  10 #include <linux/mod_devicetable.h>
  11 #include <linux/regmap.h>
  12
  13 #include "adxl355.h"
  14
  15 static const struct regmap_config adxl355_i2c_regmap_config = {
  16         .reg_bits = 8,
  17         .val_bits = 8,
  18         .max_register = 0x2F,
  19         .rd_table = &adxl355_readable_regs_tbl,
  20         .wr_table = &adxl355_writeable_regs_tbl,
  21 };
  22
  23 static int adxl355_i2c_probe(struct i2c_client *client)
  24 {
  25         struct regmap *regmap;
  26         const struct adxl355_chip_info *chip_data;
  27
  28         chip_data = i2c_get_match_data(client);
  29         if (!chip_data)
  30                 return -ENODEV;
  31
  32         regmap = devm_regmap_init_i2c(client, &adxl355_i2c_regmap_config);
  33         if (IS_ERR(regmap)) {
  34                 dev_err(&client->dev, "Error initializing i2c regmap: %ld\n",
  35                         PTR_ERR(regmap));
  36
  37                 return PTR_ERR(regmap);
  38         }
  39
  40         return adxl355_core_probe(&client->dev, regmap, chip_data);
  41 }
  42
  43 static const struct i2c_device_id adxl355_i2c_id[] = {
  44         { "adxl355", (kernel_ulong_t)&adxl35x_chip_info[ADXL355] },
  45         { "adxl359", (kernel_ulong_t)&adxl35x_chip_info[ADXL359] },
  46         { }
  47 };
  48 MODULE_DEVICE_TABLE(i2c, adxl355_i2c_id);
  49
  50 static const struct of_device_id adxl355_of_match[] = {
  51         { .compatible = "adi,adxl355", .data = &adxl35x_chip_info[ADXL355] },
  52         { .compatible = "adi,adxl359", .data = &adxl35x_chip_info[ADXL359] },
  53         { }
  54 };
  55 MODULE_DEVICE_TABLE(of, adxl355_of_match);
  56
  57 static struct i2c_driver adxl355_i2c_driver = {
  58         .driver = {
  59                 .name   = "adxl355_i2c",
  60                 .of_match_table = adxl355_of_match,
  61         },
  62         .probe          = adxl355_i2c_probe,
  63         .id_table       = adxl355_i2c_id,
  64 };
  65 module_i2c_driver(adxl355_i2c_driver);
  66
  67 MODULE_AUTHOR("Puranjay Mohan <puranjay12@gmail.com>");
  68 MODULE_DESCRIPTION("ADXL355 3-Axis Digital Accelerometer I2C driver");
  69 MODULE_LICENSE("GPL v2");
  70 MODULE_IMPORT_NS(IIO_ADXL355);