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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/sound/hda/codecs/side-codecs/cs35l56_hda_spi.c
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// SPDX-License-Identifier: GPL-2.0-only

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//

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// CS35L56 HDA audio driver SPI binding

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//

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// Copyright (C) 2023 Cirrus Logic, Inc. and

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//                    Cirrus Logic International Semiconductor Ltd.

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#include <linux/module.h>

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#include <linux/regmap.h>

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#include <linux/spi/spi.h>

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#include "cs35l56_hda.h"

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static int cs35l56_hda_spi_probe(struct spi_device *spi)

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{

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	const struct spi_device_id *id = spi_get_device_id(spi);

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	struct cs35l56_hda *cs35l56;

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	int ret;

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	cs35l56 = devm_kzalloc(&spi->dev, sizeof(*cs35l56), GFP_KERNEL);

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	if (!cs35l56)

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		return -ENOMEM;

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	cs35l56->base.dev = &spi->dev;

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	ret = cs35l56_init_config_for_spi(&cs35l56->base, spi);

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	if (ret)

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		return ret;

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#ifdef CS35L56_WAKE_HOLD_TIME_US

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	cs35l56->base.can_hibernate = true;

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#endif

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	cs35l56->base.fw_reg = &cs35l56_fw_reg;

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	cs35l56->base.regmap = devm_regmap_init_spi(spi, &cs35l56_regmap_spi);

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	if (IS_ERR(cs35l56->base.regmap)) {

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		ret = PTR_ERR(cs35l56->base.regmap);

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		dev_err(cs35l56->base.dev, "Failed to allocate register map: %d\n",

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			ret);

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		return ret;

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	}

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	ret = cs35l56_hda_common_probe(cs35l56, id->driver_data, spi_get_chipselect(spi, 0));

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	if (ret)

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		return ret;

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	ret = cs35l56_irq_request(&cs35l56->base, spi->irq);

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	if (ret < 0)

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		cs35l56_hda_remove(cs35l56->base.dev);

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	return ret;

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}

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static void cs35l56_hda_spi_remove(struct spi_device *spi)

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{

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	cs35l56_hda_remove(&spi->dev);

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}

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static const struct spi_device_id cs35l56_hda_spi_id[] = {

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	{ "cs35l54-hda", 0x3554 },

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	{ "cs35l56-hda", 0x3556 },

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	{ "cs35l57-hda", 0x3557 },

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	{}

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};

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static const struct acpi_device_id cs35l56_acpi_hda_match[] = {

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	{ "CSC3554", 0 },

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	{ "CSC3556", 0 },

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	{ "CSC3557", 0 },

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	{}

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};

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MODULE_DEVICE_TABLE(acpi, cs35l56_acpi_hda_match);

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static struct spi_driver cs35l56_hda_spi_driver = {

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	.driver = {

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		.name		  = "cs35l56-hda",

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		.acpi_match_table = cs35l56_acpi_hda_match,

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		.pm		  = &cs35l56_hda_pm_ops,

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	},

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	.id_table	= cs35l56_hda_spi_id,

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	.probe		= cs35l56_hda_spi_probe,

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	.remove		= cs35l56_hda_spi_remove,

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};

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module_spi_driver(cs35l56_hda_spi_driver);

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MODULE_DESCRIPTION("HDA CS35L56 SPI driver");

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MODULE_IMPORT_NS("SND_HDA_SCODEC_CS35L56");

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MODULE_IMPORT_NS("SND_SOC_CS35L56_SHARED");

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MODULE_AUTHOR("Richard Fitzgerald <[email protected]>");

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MODULE_AUTHOR("Simon Trimmer <[email protected]>");

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MODULE_LICENSE("GPL");

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