100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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//
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// cs35l41-spi.c -- CS35l41 SPI driver
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//
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// Copyright 2017-2021 Cirrus Logic, Inc.
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//
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// Author: David Rhodes <david.rhodes@cirrus.com>
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#include <linux/acpi.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/platform_device.h>
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#include <linux/spi/spi.h>
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#include "cs35l41.h"
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static const struct spi_device_id cs35l41_id_spi[] = {
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{ "cs35l40", 0 },
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{ "cs35l41", 0 },
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{ "cs35l51", 0 },
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{ "cs35l53", 0 },
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{}
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};
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MODULE_DEVICE_TABLE(spi, cs35l41_id_spi);
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static int cs35l41_spi_probe(struct spi_device *spi)
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{
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const struct regmap_config *regmap_config = &cs35l41_regmap_spi;
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struct cs35l41_hw_cfg *hw_cfg = dev_get_platdata(&spi->dev);
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struct cs35l41_private *cs35l41;
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int ret;
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cs35l41 = devm_kzalloc(&spi->dev, sizeof(struct cs35l41_private), GFP_KERNEL);
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if (!cs35l41)
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return -ENOMEM;
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spi->max_speed_hz = CS35L41_SPI_MAX_FREQ;
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spi_setup(spi);
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spi_set_drvdata(spi, cs35l41);
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cs35l41->regmap = devm_regmap_init_spi(spi, regmap_config);
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if (IS_ERR(cs35l41->regmap)) {
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ret = PTR_ERR(cs35l41->regmap);
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dev_err(&spi->dev, "Failed to allocate register map: %d\n", ret);
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return ret;
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}
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cs35l41->dev = &spi->dev;
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cs35l41->irq = spi->irq;
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return cs35l41_probe(cs35l41, hw_cfg);
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}
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static void cs35l41_spi_remove(struct spi_device *spi)
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{
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struct cs35l41_private *cs35l41 = spi_get_drvdata(spi);
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cs35l41_remove(cs35l41);
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}
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#ifdef CONFIG_OF
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static const struct of_device_id cs35l41_of_match[] = {
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{ .compatible = "cirrus,cs35l40" },
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{ .compatible = "cirrus,cs35l41" },
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{},
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};
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MODULE_DEVICE_TABLE(of, cs35l41_of_match);
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#endif
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#ifdef CONFIG_ACPI
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static const struct acpi_device_id cs35l41_acpi_match[] = {
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{ "CSC3541", 0 }, /* Cirrus Logic PnP ID + part ID */
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{ "CLSA3541", 0 }, /* Cirrus Logic PnP ID + part ID */
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{},
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};
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MODULE_DEVICE_TABLE(acpi, cs35l41_acpi_match);
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#endif
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static struct spi_driver cs35l41_spi_driver = {
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.driver = {
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.name = "cs35l41",
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.pm = &cs35l41_pm_ops,
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.of_match_table = of_match_ptr(cs35l41_of_match),
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.acpi_match_table = ACPI_PTR(cs35l41_acpi_match),
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},
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.id_table = cs35l41_id_spi,
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.probe = cs35l41_spi_probe,
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.remove = cs35l41_spi_remove,
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};
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module_spi_driver(cs35l41_spi_driver);
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MODULE_DESCRIPTION("SPI CS35L41 driver");
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MODULE_AUTHOR("David Rhodes, Cirrus Logic Inc, <david.rhodes@cirrus.com>");
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MODULE_LICENSE("GPL");
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