1 // SPDX-License-Identifier: GPL-2.0
3 // cs35l41-i2c.c -- CS35l41 I2C driver
5 // Copyright 2017-2021 Cirrus Logic, Inc.
7 // Author: David Rhodes <david.rhodes@cirrus.com>
9 #include <linux/acpi.h>
10 #include <linux/delay.h>
11 #include <linux/i2c.h>
12 #include <linux/init.h>
13 #include <linux/kernel.h>
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
17 #include <linux/platform_device.h>
18 #include <linux/slab.h>
22 static const struct i2c_device_id cs35l41_id_i2c[] = {
30 MODULE_DEVICE_TABLE(i2c, cs35l41_id_i2c);
32 static int cs35l41_i2c_probe(struct i2c_client *client)
34 struct cs35l41_private *cs35l41;
35 struct device *dev = &client->dev;
36 struct cs35l41_hw_cfg *hw_cfg = dev_get_platdata(dev);
37 const struct regmap_config *regmap_config = &cs35l41_regmap_i2c;
39 cs35l41 = devm_kzalloc(dev, sizeof(struct cs35l41_private), GFP_KERNEL);
45 cs35l41->irq = client->irq;
47 i2c_set_clientdata(client, cs35l41);
48 cs35l41->regmap = devm_regmap_init_i2c(client, regmap_config);
49 if (IS_ERR(cs35l41->regmap))
50 return dev_err_probe(cs35l41->dev, PTR_ERR(cs35l41->regmap),
51 "Failed to allocate register map\n");
53 return cs35l41_probe(cs35l41, hw_cfg);
56 static void cs35l41_i2c_remove(struct i2c_client *client)
58 struct cs35l41_private *cs35l41 = i2c_get_clientdata(client);
60 cs35l41_remove(cs35l41);
64 static const struct of_device_id cs35l41_of_match[] = {
65 { .compatible = "cirrus,cs35l40" },
66 { .compatible = "cirrus,cs35l41" },
69 MODULE_DEVICE_TABLE(of, cs35l41_of_match);
73 static const struct acpi_device_id cs35l41_acpi_match[] = {
74 { "CSC3541", 0 }, /* Cirrus Logic PnP ID + part ID */
77 MODULE_DEVICE_TABLE(acpi, cs35l41_acpi_match);
80 static struct i2c_driver cs35l41_i2c_driver = {
83 .pm = pm_ptr(&cs35l41_pm_ops),
84 .of_match_table = of_match_ptr(cs35l41_of_match),
85 .acpi_match_table = ACPI_PTR(cs35l41_acpi_match),
87 .id_table = cs35l41_id_i2c,
88 .probe = cs35l41_i2c_probe,
89 .remove = cs35l41_i2c_remove,
92 module_i2c_driver(cs35l41_i2c_driver);
94 MODULE_DESCRIPTION("I2C CS35L41 driver");
95 MODULE_AUTHOR("David Rhodes, Cirrus Logic Inc, <david.rhodes@cirrus.com>");
96 MODULE_LICENSE("GPL");