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
20 static const struct spi_device_id cs35l41_id_spi[] = {
21 { "cs35l40", 0 },
22 { "cs35l41", 0 },
23 { "cs35l51", 0 },
24 { "cs35l53", 0 },
25 {}
26 };
27
28 MODULE_DEVICE_TABLE(spi, cs35l41_id_spi);
29
30 static 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
55 static 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
63 static const struct of_device_id cs35l41_of_match[] = {
64 { .compatible = "cirrus,cs35l40" },
65 { .compatible = "cirrus,cs35l41" },
66 {},
67 };
68 MODULE_DEVICE_TABLE(of, cs35l41_of_match);
69 #endif
70
71 #ifdef CONFIG_ACPI
72 static 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 };
77 MODULE_DEVICE_TABLE(acpi, cs35l41_acpi_match);
78 #endif
79
80 static 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
92 module_spi_driver(cs35l41_spi_driver);
93
94 MODULE_DESCRIPTION("SPI CS35L41 driver");
95 MODULE_AUTHOR("David Rhodes, Cirrus Logic Inc, <david.rhodes@cirrus.com>");
96 MODULE_LICENSE("GPL");
97
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