cs35l56-spi.c

 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(&spi->dev, sizeof(struct cs35l56_private), GFP_KERNEL);
24	if (!cs35l56)
25		return -ENOMEM;
26
27	spi_set_drvdata(spi, cs35l56);
28
29	cs35l56->base.type = 0x56;
30
31	cs35l56->base.regmap = devm_regmap_init_spi(spi, regmap_config);
32	if (IS_ERR(cs35l56->base.regmap)) {
33		ret = PTR_ERR(cs35l56->base.regmap);
34		return dev_err_probe(&spi->dev, ret, "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->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, 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");