1// SPDX-License-Identifier: GPL-2.0
2//
3// cs35l45-spi.c -- CS35L45 SPI driver
4//
5// Copyright 2019-2022 Cirrus Logic, Inc.
6//
7// Author: James Schulman <james.schulman@cirrus.com>
8
9#include <linux/device.h>
10#include <linux/module.h>
11#include <linux/regmap.h>
12#include <linux/spi/spi.h>
13
14#include "cs35l45.h"
15
16static int cs35l45_spi_probe(struct spi_device *spi)
17{
18	struct cs35l45_private *cs35l45;
19	struct device *dev = &spi->dev;
20	int ret;
21
22	cs35l45 = devm_kzalloc(dev, sizeof(struct cs35l45_private), GFP_KERNEL);
23	if (cs35l45 == NULL)
24		return -ENOMEM;
25
26	spi->max_speed_hz = CS35L45_SPI_MAX_FREQ;
27	spi_setup(spi);
28
29	spi_set_drvdata(spi, cs35l45);
30	cs35l45->regmap = devm_regmap_init_spi(spi, &cs35l45_spi_regmap);
31	if (IS_ERR(cs35l45->regmap)) {
32		ret = PTR_ERR(cs35l45->regmap);
33		dev_err(dev, "Failed to allocate register map: %d\n", ret);
34		return ret;
35	}
36
37	cs35l45->dev = dev;
38	cs35l45->irq = spi->irq;
39	cs35l45->bus_type = CONTROL_BUS_SPI;
40
41	return cs35l45_probe(cs35l45);
42}
43
44static void cs35l45_spi_remove(struct spi_device *spi)
45{
46	struct cs35l45_private *cs35l45 = spi_get_drvdata(spi);
47
48	cs35l45_remove(cs35l45);
49}
50
51static const struct of_device_id cs35l45_of_match[] = {
52	{ .compatible = "cirrus,cs35l45" },
53	{},
54};
55MODULE_DEVICE_TABLE(of, cs35l45_of_match);
56
57static const struct spi_device_id cs35l45_id_spi[] = {
58	{ "cs35l45", 0 },
59	{}
60};
61MODULE_DEVICE_TABLE(spi, cs35l45_id_spi);
62
63static struct spi_driver cs35l45_spi_driver = {
64	.driver = {
65		.name		= "cs35l45",
66		.of_match_table = cs35l45_of_match,
67		.pm		= pm_ptr(&cs35l45_pm_ops),
68	},
69	.id_table	= cs35l45_id_spi,
70	.probe		= cs35l45_spi_probe,
71	.remove		= cs35l45_spi_remove,
72};
73module_spi_driver(cs35l45_spi_driver);
74
75MODULE_DESCRIPTION("SPI CS35L45 driver");
76MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>");
77MODULE_LICENSE("GPL");
78MODULE_IMPORT_NS(SND_SOC_CS35L45);
79