drivers/mfd/atc260x-i2c.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * I2C bus interface for ATC260x PMICs
   4  *
   5  * Copyright (C) 2019 Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
   6  * Copyright (C) 2020 Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
   7  */
   8
   9 #include <linux/i2c.h>
  10 #include <linux/mfd/atc260x/core.h>
  11 #include <linux/module.h>
  12 #include <linux/of.h>
  13 #include <linux/regmap.h>
  14
  15 static int atc260x_i2c_probe(struct i2c_client *client,
  16                              const struct i2c_device_id *id)
  17 {
  18         struct atc260x *atc260x;
  19         struct regmap_config regmap_cfg;
  20         int ret;
  21
  22         atc260x = devm_kzalloc(&client->dev, sizeof(*atc260x), GFP_KERNEL);
  23         if (!atc260x)
  24                 return -ENOMEM;
  25
  26         atc260x->dev = &client->dev;
  27         atc260x->irq = client->irq;
  28
  29         ret = atc260x_match_device(atc260x, &regmap_cfg);
  30         if (ret)
  31                 return ret;
  32
  33         i2c_set_clientdata(client, atc260x);
  34
  35         atc260x->regmap = devm_regmap_init_i2c(client, &regmap_cfg);
  36         if (IS_ERR(atc260x->regmap)) {
  37                 ret = PTR_ERR(atc260x->regmap);
  38                 dev_err(&client->dev, "failed to init regmap: %d\n", ret);
  39                 return ret;
  40         }
  41
  42         return atc260x_device_probe(atc260x);
  43 }
  44
  45 static const struct of_device_id atc260x_i2c_of_match[] = {
  46         { .compatible = "actions,atc2603c", .data = (void *)ATC2603C },
  47         { .compatible = "actions,atc2609a", .data = (void *)ATC2609A },
  48         { }
  49 };
  50 MODULE_DEVICE_TABLE(of, atc260x_i2c_of_match);
  51
  52 static struct i2c_driver atc260x_i2c_driver = {
  53         .driver = {
  54                 .name = "atc260x",
  55                 .of_match_table = of_match_ptr(atc260x_i2c_of_match),
  56         },
  57         .probe = atc260x_i2c_probe,
  58 };
  59 module_i2c_driver(atc260x_i2c_driver);
  60
  61 MODULE_DESCRIPTION("ATC260x PMICs I2C bus interface");
  62 MODULE_AUTHOR("Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>");
  63 MODULE_AUTHOR("Cristian Ciocaltea <cristian.ciocaltea@gmail.com>");
  64 MODULE_LICENSE("GPL");