drivers/iio/accel/kionix-kx022a-i2c.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) 2022 ROHM Semiconductors
   4  *
   5  * ROHM/KIONIX accelerometer driver
   6  */
   7
   8 #include <linux/i2c.h>
   9 #include <linux/interrupt.h>
  10 #include <linux/module.h>
  11 #include <linux/regmap.h>
  12
  13 #include "kionix-kx022a.h"
  14
  15 static int kx022a_i2c_probe(struct i2c_client *i2c)
  16 {
  17         struct device *dev = &i2c->dev;
  18         const struct kx022a_chip_info *chip_info;
  19         struct regmap *regmap;
  20
  21         if (!i2c->irq) {
  22                 dev_err(dev, "No IRQ configured\n");
  23                 return -EINVAL;
  24         }
  25
  26         chip_info = i2c_get_match_data(i2c);
  27         if (!chip_info)
  28                 return -EINVAL;
  29
  30         regmap = devm_regmap_init_i2c(i2c, chip_info->regmap_config);
  31         if (IS_ERR(regmap))
  32                 return dev_err_probe(dev, PTR_ERR(regmap),
  33                                      "Failed to initialize Regmap\n");
  34
  35         return kx022a_probe_internal(dev, chip_info);
  36 }
  37
  38 static const struct i2c_device_id kx022a_i2c_id[] = {
  39         { .name = "kx022a", .driver_data = (kernel_ulong_t)&kx022a_chip_info },
  40         { .name = "kx132-1211", .driver_data = (kernel_ulong_t)&kx132_chip_info },
  41         { .name = "kx132acr-lbz", .driver_data = (kernel_ulong_t)&kx132acr_chip_info },
  42         { }
  43 };
  44 MODULE_DEVICE_TABLE(i2c, kx022a_i2c_id);
  45
  46 static const struct of_device_id kx022a_of_match[] = {
  47         { .compatible = "kionix,kx022a", .data = &kx022a_chip_info },
  48         { .compatible = "kionix,kx132-1211", .data = &kx132_chip_info },
  49         { .compatible = "rohm,kx132acr-lbz", .data = &kx132acr_chip_info },
  50         { }
  51 };
  52 MODULE_DEVICE_TABLE(of, kx022a_of_match);
  53
  54 static struct i2c_driver kx022a_i2c_driver = {
  55         .driver = {
  56                 .name  = "kx022a-i2c",
  57                 .of_match_table = kx022a_of_match,
  58                 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
  59           },
  60         .probe        = kx022a_i2c_probe,
  61         .id_table     = kx022a_i2c_id,
  62 };
  63 module_i2c_driver(kx022a_i2c_driver);
  64
  65 MODULE_DESCRIPTION("ROHM/Kionix KX022A accelerometer driver");
  66 MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
  67 MODULE_LICENSE("GPL");
  68 MODULE_IMPORT_NS("IIO_KX022A");