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
17static 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(dev: &spi->dev, size: sizeof(struct cs35l56_private), GFP_KERNEL);
24 if (!cs35l56)
25 return -ENOMEM;
26
27 spi_set_drvdata(spi, data: cs35l56);
28
29 cs35l56->base.type = 0x56;
30
31 cs35l56->base.regmap = devm_regmap_init_spi(spi, regmap_config);
32 if (IS_ERR(ptr: cs35l56->base.regmap)) {
33 ret = PTR_ERR(ptr: cs35l56->base.regmap);
34 return dev_err_probe(dev: &spi->dev, err: ret, fmt: "Failed to allocate register map\n");
35 }
36
37 cs35l56->base.dev = &spi->dev;
38 cs35l56->base.can_hibernate = true;
39 ret = cs35l56_init_config_for_spi(cs35l56: &cs35l56->base, spi);
40 if (ret)
41 return ret;
42
43 ret = cs35l56_common_probe(cs35l56);
44 if (ret != 0)
45 return ret;
46
47 ret = cs35l56_init(cs35l56);
48 if (ret == 0)
49 ret = cs35l56_irq_request(cs35l56_base: &cs35l56->base, irq: spi->irq);
50 if (ret < 0)
51 cs35l56_remove(cs35l56);
52
53 return ret;
54}
55
56static void cs35l56_spi_remove(struct spi_device *spi)
57{
58 struct cs35l56_private *cs35l56 = spi_get_drvdata(spi);
59
60 cs35l56_remove(cs35l56);
61}
62
63static const struct spi_device_id cs35l56_id_spi[] = {
64 { "cs35l56", 0 },
65 {}
66};
67MODULE_DEVICE_TABLE(spi, cs35l56_id_spi);
68
69#ifdef CONFIG_ACPI
70static const struct acpi_device_id cs35l56_asoc_acpi_match[] = {
71 { "CSC355C", 0 },
72 {},
73};
74MODULE_DEVICE_TABLE(acpi, cs35l56_asoc_acpi_match);
75#endif
76
77static struct spi_driver cs35l56_spi_driver = {
78 .driver = {
79 .name = "cs35l56",
80 .pm = pm_ptr(&cs35l56_pm_ops_i2c_spi),
81 .acpi_match_table = ACPI_PTR(cs35l56_asoc_acpi_match),
82 },
83 .id_table = cs35l56_id_spi,
84 .probe = cs35l56_spi_probe,
85 .remove = cs35l56_spi_remove,
86};
87
88module_spi_driver(cs35l56_spi_driver);
89
90MODULE_DESCRIPTION("ASoC CS35L56 SPI driver");
91MODULE_IMPORT_NS("SND_SOC_CS35L56_CORE");
92MODULE_IMPORT_NS("SND_SOC_CS35L56_SHARED");
93MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
94MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>");
95MODULE_LICENSE("GPL");
96

source code of linux/sound/soc/codecs/cs35l56-spi.c