1// SPDX-License-Identifier: GPL-2.0
2//
3// cs35l41-i2c.c -- CS35l41 I2C driver
4//
5// Copyright 2017-2021 Cirrus Logic, Inc.
6//
7// Author: David Rhodes <david.rhodes@cirrus.com>
8
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>
16#include <linux/of_device.h>
17#include <linux/platform_device.h>
18#include <linux/slab.h>
19
20#include "cs35l41.h"
21
22static const struct i2c_device_id cs35l41_id_i2c[] = {
23	{ "cs35l40", 0 },
24	{ "cs35l41", 0 },
25	{ "cs35l51", 0 },
26	{ "cs35l53", 0 },
27	{}
28};
29
30MODULE_DEVICE_TABLE(i2c, cs35l41_id_i2c);
31
32static int cs35l41_i2c_probe(struct i2c_client *client)
33{
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;
38	int ret;
39
40	cs35l41 = devm_kzalloc(dev, sizeof(struct cs35l41_private), GFP_KERNEL);
41
42	if (!cs35l41)
43		return -ENOMEM;
44
45	cs35l41->dev = dev;
46	cs35l41->irq = client->irq;
47
48	i2c_set_clientdata(client, cs35l41);
49	cs35l41->regmap = devm_regmap_init_i2c(client, regmap_config);
50	if (IS_ERR(cs35l41->regmap)) {
51		ret = PTR_ERR(cs35l41->regmap);
52		dev_err(cs35l41->dev, "Failed to allocate register map: %d\n", ret);
53		return ret;
54	}
55
56	return cs35l41_probe(cs35l41, hw_cfg);
57}
58
59static void cs35l41_i2c_remove(struct i2c_client *client)
60{
61	struct cs35l41_private *cs35l41 = i2c_get_clientdata(client);
62
63	cs35l41_remove(cs35l41);
64}
65
66#ifdef CONFIG_OF
67static const struct of_device_id cs35l41_of_match[] = {
68	{ .compatible = "cirrus,cs35l40" },
69	{ .compatible = "cirrus,cs35l41" },
70	{},
71};
72MODULE_DEVICE_TABLE(of, cs35l41_of_match);
73#endif
74
75#ifdef CONFIG_ACPI
76static const struct acpi_device_id cs35l41_acpi_match[] = {
77	{ "CSC3541", 0 }, /* Cirrus Logic PnP ID + part ID */
78	{},
79};
80MODULE_DEVICE_TABLE(acpi, cs35l41_acpi_match);
81#endif
82
83static struct i2c_driver cs35l41_i2c_driver = {
84	.driver = {
85		.name		= "cs35l41",
86		.pm		= &cs35l41_pm_ops,
87		.of_match_table = of_match_ptr(cs35l41_of_match),
88		.acpi_match_table = ACPI_PTR(cs35l41_acpi_match),
89	},
90	.id_table	= cs35l41_id_i2c,
91	.probe		= cs35l41_i2c_probe,
92	.remove		= cs35l41_i2c_remove,
93};
94
95module_i2c_driver(cs35l41_i2c_driver);
96
97MODULE_DESCRIPTION("I2C CS35L41 driver");
98MODULE_AUTHOR("David Rhodes, Cirrus Logic Inc, <david.rhodes@cirrus.com>");
99MODULE_LICENSE("GPL");
100