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
16 static 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
44 static 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
51 static const struct of_device_id cs35l45_of_match[] = {
52 { .compatible = "cirrus,cs35l45" },
53 {},
54 };
55 MODULE_DEVICE_TABLE(of, cs35l45_of_match);
56
57 static const struct spi_device_id cs35l45_id_spi[] = {
58 { "cs35l45", 0 },
59 {}
60 };
61 MODULE_DEVICE_TABLE(spi, cs35l45_id_spi);
62
63 static 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 };
73 module_spi_driver(cs35l45_spi_driver);
74
75 MODULE_DESCRIPTION("SPI CS35L45 driver");
76 MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>");
77 MODULE_LICENSE("GPL");
78 MODULE_IMPORT_NS(SND_SOC_CS35L45);
79
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