1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // CS35L56 ALSA SoC audio driver SPI 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/module.h>
10 #include <linux/moduleparam.h>
11 #include <linux/regmap.h>
12 #include <linux/spi/spi.h>
13 #include <linux/types.h>
14
15 #include "cs35l56.h"
16
17 static int cs35l56_spi_probe(struct spi_device *spi)
18 {
19 const struct regmap_config *regmap_config = &cs35l56_regmap_spi;
20 struct cs35l56_private *cs35l56;
21 int ret;
22
23 cs35l56 = devm_kzalloc(&spi->dev, sizeof(struct cs35l56_private), GFP_KERNEL);
24 if (!cs35l56)
25 return -ENOMEM;
26
27 spi_set_drvdata(spi, cs35l56);
28 cs35l56->base.regmap = devm_regmap_init_spi(spi, regmap_config);
29 if (IS_ERR(cs35l56->base.regmap)) {
30 ret = PTR_ERR(cs35l56->base.regmap);
31 return dev_err_probe(&spi->dev, ret, "Failed to allocate register map\n");
32 }
33
34 cs35l56->base.dev = &spi->dev;
35 cs35l56->base.can_hibernate = true;
36
37 ret = cs35l56_common_probe(cs35l56);
38 if (ret != 0)
39 return ret;
40
41 ret = cs35l56_init(cs35l56);
42 if (ret == 0)
43 ret = cs35l56_irq_request(&cs35l56->base, spi->irq);
44 if (ret < 0)
45 cs35l56_remove(cs35l56);
46
47 return ret;
48 }
49
50 static void cs35l56_spi_remove(struct spi_device *spi)
51 {
52 struct cs35l56_private *cs35l56 = spi_get_drvdata(spi);
53
54 cs35l56_remove(cs35l56);
55 }
56
57 static const struct spi_device_id cs35l56_id_spi[] = {
58 { "cs35l56", 0 },
59 {}
60 };
61 MODULE_DEVICE_TABLE(spi, cs35l56_id_spi);
62
63 #ifdef CONFIG_ACPI
64 static const struct acpi_device_id cs35l56_asoc_acpi_match[] = {
65 { "CSC355C", 0 },
66 {},
67 };
68 MODULE_DEVICE_TABLE(acpi, cs35l56_asoc_acpi_match);
69 #endif
70
71 static struct spi_driver cs35l56_spi_driver = {
72 .driver = {
73 .name = "cs35l56",
74 .pm = pm_ptr(&cs35l56_pm_ops_i2c_spi),
75 .acpi_match_table = ACPI_PTR(cs35l56_asoc_acpi_match),
76 },
77 .id_table = cs35l56_id_spi,
78 .probe = cs35l56_spi_probe,
79 .remove = cs35l56_spi_remove,
80 };
81
82 module_spi_driver(cs35l56_spi_driver);
83
84 MODULE_DESCRIPTION("ASoC CS35L56 SPI driver");
85 MODULE_IMPORT_NS(SND_SOC_CS35L56_CORE);
86 MODULE_IMPORT_NS(SND_SOC_CS35L56_SHARED);
87 MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
88 MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>");
89 MODULE_LICENSE("GPL");
90
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.