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
atc260x_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)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, ®map_cfg);
30 if (ret)
31 return ret;
32
33 i2c_set_clientdata(client, atc260x);
34
35 atc260x->regmap = devm_regmap_init_i2c(client, ®map_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");
65