1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // CS35L56 ALSA SoC audio driver I2C binding
4 //
5 // Copyright (C) 2023 Cirrus Logic, Inc. and
6 // Cirrus Logic International Semiconductor Ltd.
7
8 #include <linux/acpi.h>
9 #include <linux/i2c.h>
10 #include <linux/module.h>
11 #include <linux/moduleparam.h>
12 #include <linux/regmap.h>
13 #include <linux/slab.h>
14 #include <linux/types.h>
15
16 #include "cs35l56.h"
17
cs35l56_i2c_probe(struct i2c_client * client)18 static int cs35l56_i2c_probe(struct i2c_client *client)
19 {
20 struct cs35l56_private *cs35l56;
21 struct device *dev = &client->dev;
22 const struct regmap_config *regmap_config = &cs35l56_regmap_i2c;
23 int ret;
24
25 cs35l56 = devm_kzalloc(dev, sizeof(struct cs35l56_private), GFP_KERNEL);
26 if (!cs35l56)
27 return -ENOMEM;
28
29 cs35l56->base.dev = dev;
30 cs35l56->base.can_hibernate = true;
31
32 i2c_set_clientdata(client, cs35l56);
33 cs35l56->base.regmap = devm_regmap_init_i2c(client, regmap_config);
34 if (IS_ERR(cs35l56->base.regmap)) {
35 ret = PTR_ERR(cs35l56->base.regmap);
36 return dev_err_probe(cs35l56->base.dev, ret, "Failed to allocate register map\n");
37 }
38
39 ret = cs35l56_common_probe(cs35l56);
40 if (ret != 0)
41 return ret;
42
43 ret = cs35l56_init(cs35l56);
44 if (ret == 0)
45 ret = cs35l56_irq_request(&cs35l56->base, client->irq);
46 if (ret < 0)
47 cs35l56_remove(cs35l56);
48
49 return ret;
50 }
51
cs35l56_i2c_remove(struct i2c_client * client)52 static void cs35l56_i2c_remove(struct i2c_client *client)
53 {
54 struct cs35l56_private *cs35l56 = i2c_get_clientdata(client);
55
56 cs35l56_remove(cs35l56);
57 }
58
59 static const struct i2c_device_id cs35l56_id_i2c[] = {
60 { "cs35l56" },
61 {}
62 };
63 MODULE_DEVICE_TABLE(i2c, cs35l56_id_i2c);
64
65 #ifdef CONFIG_ACPI
66 static const struct acpi_device_id cs35l56_asoc_acpi_match[] = {
67 { "CSC355C", 0 },
68 {},
69 };
70 MODULE_DEVICE_TABLE(acpi, cs35l56_asoc_acpi_match);
71 #endif
72
73 static struct i2c_driver cs35l56_i2c_driver = {
74 .driver = {
75 .name = "cs35l56",
76 .pm = pm_ptr(&cs35l56_pm_ops_i2c_spi),
77 .acpi_match_table = ACPI_PTR(cs35l56_asoc_acpi_match),
78 },
79 .id_table = cs35l56_id_i2c,
80 .probe = cs35l56_i2c_probe,
81 .remove = cs35l56_i2c_remove,
82 };
83
84 module_i2c_driver(cs35l56_i2c_driver);
85
86 MODULE_DESCRIPTION("ASoC CS35L56 I2C driver");
87 MODULE_IMPORT_NS(SND_SOC_CS35L56_CORE);
88 MODULE_IMPORT_NS(SND_SOC_CS35L56_SHARED);
89 MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
90 MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>");
91 MODULE_LICENSE("GPL");
92