79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// cs35l45-spi.c -- CS35L45 SPI driver
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//
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// Copyright 2019-2022 Cirrus Logic, Inc.
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//
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// Author: James Schulman <james.schulman@cirrus.com>
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#include <linux/device.h>
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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 "cs35l45.h"
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static int cs35l45_spi_probe(struct spi_device *spi)
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{
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struct cs35l45_private *cs35l45;
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struct device *dev = &spi->dev;
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int ret;
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cs35l45 = devm_kzalloc(dev, sizeof(struct cs35l45_private), GFP_KERNEL);
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if (cs35l45 == NULL)
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return -ENOMEM;
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spi->max_speed_hz = CS35L45_SPI_MAX_FREQ;
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spi_setup(spi);
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spi_set_drvdata(spi, cs35l45);
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cs35l45->regmap = devm_regmap_init_spi(spi, &cs35l45_spi_regmap);
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if (IS_ERR(cs35l45->regmap)) {
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ret = PTR_ERR(cs35l45->regmap);
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dev_err(dev, "Failed to allocate register map: %d\n", ret);
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return ret;
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}
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cs35l45->dev = dev;
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cs35l45->irq = spi->irq;
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cs35l45->bus_type = CONTROL_BUS_SPI;
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return cs35l45_probe(cs35l45);
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}
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static void cs35l45_spi_remove(struct spi_device *spi)
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{
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struct cs35l45_private *cs35l45 = spi_get_drvdata(spi);
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cs35l45_remove(cs35l45);
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}
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static const struct of_device_id cs35l45_of_match[] = {
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{ .compatible = "cirrus,cs35l45" },
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{},
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};
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MODULE_DEVICE_TABLE(of, cs35l45_of_match);
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static const struct spi_device_id cs35l45_id_spi[] = {
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{ "cs35l45", 0 },
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{}
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};
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MODULE_DEVICE_TABLE(spi, cs35l45_id_spi);
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static struct spi_driver cs35l45_spi_driver = {
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.driver = {
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.name = "cs35l45",
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.of_match_table = cs35l45_of_match,
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.pm = &cs35l45_pm_ops,
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},
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.id_table = cs35l45_id_spi,
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.probe = cs35l45_spi_probe,
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.remove = cs35l45_spi_remove,
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};
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module_spi_driver(cs35l45_spi_driver);
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MODULE_DESCRIPTION("SPI CS35L45 driver");
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MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS(SND_SOC_CS35L45);
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