1// SPDX-License-Identifier: GPL-2.0
2//
3// cs35l41-spi.c -- CS35l41 SPI driver
4//
5// Copyright 2017-2021 Cirrus Logic, Inc.
6//
7// Author: David Rhodes	<david.rhodes@cirrus.com>
8
9#include <linux/acpi.h>
10#include <linux/delay.h>
11#include <linux/init.h>
12#include <linux/kernel.h>
13#include <linux/module.h>
14#include <linux/moduleparam.h>
15#include <linux/platform_device.h>
16#include <linux/spi/spi.h>
17
18#include "cs35l41.h"
19
20static const struct spi_device_id cs35l41_id_spi[] = {
21	{ "cs35l40", 0 },
22	{ "cs35l41", 0 },
23	{ "cs35l51", 0 },
24	{ "cs35l53", 0 },
25	{}
26};
27
28MODULE_DEVICE_TABLE(spi, cs35l41_id_spi);
29
30static int cs35l41_spi_probe(struct spi_device *spi)
31{
32	const struct regmap_config *regmap_config = &cs35l41_regmap_spi;
33	struct cs35l41_hw_cfg *hw_cfg = dev_get_platdata(&spi->dev);
34	struct cs35l41_private *cs35l41;
35
36	cs35l41 = devm_kzalloc(&spi->dev, sizeof(struct cs35l41_private), GFP_KERNEL);
37	if (!cs35l41)
38		return -ENOMEM;
39
40	spi->max_speed_hz = CS35L41_SPI_MAX_FREQ;
41	spi_setup(spi);
42
43	spi_set_drvdata(spi, cs35l41);
44	cs35l41->regmap = devm_regmap_init_spi(spi, regmap_config);
45	if (IS_ERR(cs35l41->regmap))
46		return dev_err_probe(cs35l41->dev, PTR_ERR(cs35l41->regmap),
47				     "Failed to allocate register map\n");
48
49	cs35l41->dev = &spi->dev;
50	cs35l41->irq = spi->irq;
51
52	return cs35l41_probe(cs35l41, hw_cfg);
53}
54
55static void cs35l41_spi_remove(struct spi_device *spi)
56{
57	struct cs35l41_private *cs35l41 = spi_get_drvdata(spi);
58
59	cs35l41_remove(cs35l41);
60}
61
62#ifdef CONFIG_OF
63static const struct of_device_id cs35l41_of_match[] = {
64	{ .compatible = "cirrus,cs35l40" },
65	{ .compatible = "cirrus,cs35l41" },
66	{},
67};
68MODULE_DEVICE_TABLE(of, cs35l41_of_match);
69#endif
70
71#ifdef CONFIG_ACPI
72static const struct acpi_device_id cs35l41_acpi_match[] = {
73	{ "CSC3541", 0 }, /* Cirrus Logic PnP ID + part ID */
74	{ "CLSA3541", 0 }, /* Cirrus Logic PnP ID + part ID */
75	{},
76};
77MODULE_DEVICE_TABLE(acpi, cs35l41_acpi_match);
78#endif
79
80static struct spi_driver cs35l41_spi_driver = {
81	.driver = {
82		.name		= "cs35l41",
83		.pm		= pm_ptr(&cs35l41_pm_ops),
84		.of_match_table = of_match_ptr(cs35l41_of_match),
85		.acpi_match_table = ACPI_PTR(cs35l41_acpi_match),
86	},
87	.id_table	= cs35l41_id_spi,
88	.probe		= cs35l41_spi_probe,
89	.remove		= cs35l41_spi_remove,
90};
91
92module_spi_driver(cs35l41_spi_driver);
93
94MODULE_DESCRIPTION("SPI CS35L41 driver");
95MODULE_AUTHOR("David Rhodes, Cirrus Logic Inc, <david.rhodes@cirrus.com>");
96MODULE_LICENSE("GPL");
97