tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1// SPDX-License-Identifier: GPL-2.0-only
2//
3// CS35L56 HDA audio driver SPI binding
4//
5// Copyright (C) 2023 Cirrus Logic, Inc. and
6// Cirrus Logic International Semiconductor Ltd.
7
8#include <linux/module.h>
9#include <linux/regmap.h>
10#include <linux/spi/spi.h>
11
12#include "cs35l56_hda.h"
13
14static int cs35l56_hda_spi_probe(struct spi_device *spi)
15{
16 struct cs35l56_hda *cs35l56;
17 int ret;
18
19 cs35l56 = devm_kzalloc(&spi->dev, sizeof(*cs35l56), GFP_KERNEL);
20 if (!cs35l56)
21 return -ENOMEM;
22
23 cs35l56->base.dev = &spi->dev;
24
25#ifdef CS35L56_WAKE_HOLD_TIME_US
26 cs35l56->base.can_hibernate = true;
27#endif
28 cs35l56->base.regmap = devm_regmap_init_spi(spi, &cs35l56_regmap_spi);
29 if (IS_ERR(cs35l56->base.regmap)) {
30 ret = PTR_ERR(cs35l56->base.regmap);
31 dev_err(cs35l56->base.dev, "Failed to allocate register map: %d\n",
32 ret);
33 return ret;
34 }
35
36 ret = cs35l56_hda_common_probe(cs35l56, spi->chip_select);
37 if (ret)
38 return ret;
39 ret = cs35l56_irq_request(&cs35l56->base, spi->irq);
40 if (ret < 0)
41 cs35l56_hda_remove(cs35l56->base.dev);
42
43 return ret;
44}
45
46static void cs35l56_hda_spi_remove(struct spi_device *spi)
47{
48 cs35l56_hda_remove(&spi->dev);
49}
50
51static const struct spi_device_id cs35l56_hda_spi_id[] = {
52 { "cs35l56-hda", 0 },
53 {}
54};
55
56static struct spi_driver cs35l56_hda_spi_driver = {
57 .driver = {
58 .name = "cs35l56-hda",
59 .pm = &cs35l56_hda_pm_ops,
60 },
61 .id_table = cs35l56_hda_spi_id,
62 .probe = cs35l56_hda_spi_probe,
63 .remove = cs35l56_hda_spi_remove,
64};
65module_spi_driver(cs35l56_hda_spi_driver);
66
67MODULE_DESCRIPTION("HDA CS35L56 SPI driver");
68MODULE_IMPORT_NS(SND_HDA_SCODEC_CS35L56);
69MODULE_IMPORT_NS(SND_SOC_CS35L56_SHARED);
70MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
71MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>");
72MODULE_LICENSE("GPL");