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 unsigned int id = (u32)(uintptr_t)i2c_get_match_data(client);
21 struct cs35l56_private *cs35l56;
22 struct device *dev = &client->dev;
23 const struct regmap_config *regmap_config;
24 int ret;
25
26 cs35l56 = devm_kzalloc(dev, sizeof(struct cs35l56_private), GFP_KERNEL);
27 if (!cs35l56)
28 return -ENOMEM;
29
30 cs35l56->base.dev = dev;
31 cs35l56->base.can_hibernate = true;
32
33 i2c_set_clientdata(client, cs35l56);
34
35 switch (id) {
36 case 0x3556:
37 regmap_config = &cs35l56_regmap_i2c;
38 cs35l56->base.fw_reg = &cs35l56_fw_reg;
39 break;
40 case 0x3563:
41 regmap_config = &cs35l63_regmap_i2c;
42 cs35l56->base.fw_reg = &cs35l63_fw_reg;
43 break;
44 default:
45 return -ENODEV;
46 }
47
48 cs35l56->base.regmap = devm_regmap_init_i2c(client, regmap_config);
49 if (IS_ERR(cs35l56->base.regmap)) {
50 ret = PTR_ERR(cs35l56->base.regmap);
51 return dev_err_probe(cs35l56->base.dev, ret, "Failed to allocate register map\n");
52 }
53
54 ret = cs35l56_common_probe(cs35l56);
55 if (ret != 0)
56 return ret;
57
58 ret = cs35l56_init(cs35l56);
59 if (ret == 0)
60 ret = cs35l56_irq_request(&cs35l56->base, client->irq);
61 if (ret < 0)
62 cs35l56_remove(cs35l56);
63
64 return ret;
65 }
66
cs35l56_i2c_remove(struct i2c_client * client)67 static void cs35l56_i2c_remove(struct i2c_client *client)
68 {
69 struct cs35l56_private *cs35l56 = i2c_get_clientdata(client);
70
71 cs35l56_remove(cs35l56);
72 }
73
74 static const struct i2c_device_id cs35l56_id_i2c[] = {
75 { "cs35l56", 0x3556 },
76 { "cs35l63", 0x3563 },
77 {}
78 };
79 MODULE_DEVICE_TABLE(i2c, cs35l56_id_i2c);
80
81 #ifdef CONFIG_ACPI
82 static const struct acpi_device_id cs35l56_asoc_acpi_match[] = {
83 { "CSC355C", 0x3556 },
84 { "CSC356C", 0x3563 },
85 {},
86 };
87 MODULE_DEVICE_TABLE(acpi, cs35l56_asoc_acpi_match);
88 #endif
89
90 static struct i2c_driver cs35l56_i2c_driver = {
91 .driver = {
92 .name = "cs35l56",
93 .pm = pm_ptr(&cs35l56_pm_ops_i2c_spi),
94 .acpi_match_table = ACPI_PTR(cs35l56_asoc_acpi_match),
95 },
96 .id_table = cs35l56_id_i2c,
97 .probe = cs35l56_i2c_probe,
98 .remove = cs35l56_i2c_remove,
99 };
100
101 module_i2c_driver(cs35l56_i2c_driver);
102
103 MODULE_DESCRIPTION("ASoC CS35L56 I2C driver");
104 MODULE_IMPORT_NS("SND_SOC_CS35L56_CORE");
105 MODULE_IMPORT_NS("SND_SOC_CS35L56_SHARED");
106 MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
107 MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>");
108 MODULE_LICENSE("GPL");
109