soc/codecs/cs35l45-spi.c

0001 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
0002 //
0003 // cs35l45-spi.c -- CS35L45 SPI driver
0004 //
0005 // Copyright 2019-2022 Cirrus Logic, Inc.
0006 //
0007 // Author: James Schulman <james.schulman@cirrus.com>
0008
0009 #include <linux/device.h>
0010 #include <linux/module.h>
0011 #include <linux/regmap.h>
0012 #include <linux/spi/spi.h>
0013
0014 #include "cs35l45.h"
0015
0016 static int cs35l45_spi_probe(struct spi_device *spi)
0017 {
0018     struct cs35l45_private *cs35l45;
0019     struct device *dev = &spi->dev;
0020     int ret;
0021
0022     cs35l45 = devm_kzalloc(dev, sizeof(struct cs35l45_private), GFP_KERNEL);
0023     if (cs35l45 == NULL)
0024         return -ENOMEM;
0025
0026     spi_set_drvdata(spi, cs35l45);
0027     cs35l45->regmap = devm_regmap_init_spi(spi, &cs35l45_spi_regmap);
0028     if (IS_ERR(cs35l45->regmap)) {
0029         ret = PTR_ERR(cs35l45->regmap);
0030         dev_err(dev, "Failed to allocate register map: %d\n", ret);
0031         return ret;
0032     }
0033
0034     cs35l45->dev = dev;
0035
0036     return cs35l45_probe(cs35l45);
0037 }
0038
0039 static void cs35l45_spi_remove(struct spi_device *spi)
0040 {
0041     struct cs35l45_private *cs35l45 = spi_get_drvdata(spi);
0042
0043     cs35l45_remove(cs35l45);
0044 }
0045
0046 static const struct of_device_id cs35l45_of_match[] = {
0047     { .compatible = "cirrus,cs35l45" },
0048     {},
0049 };
0050 MODULE_DEVICE_TABLE(of, cs35l45_of_match);
0051
0052 static const struct spi_device_id cs35l45_id_spi[] = {
0053     { "cs35l45", 0 },
0054     {}
0055 };
0056 MODULE_DEVICE_TABLE(spi, cs35l45_id_spi);
0057
0058 static struct spi_driver cs35l45_spi_driver = {
0059     .driver = {
0060         .name       = "cs35l45",
0061         .of_match_table = cs35l45_of_match,
0062         .pm     = &cs35l45_pm_ops,
0063     },
0064     .id_table   = cs35l45_id_spi,
0065     .probe      = cs35l45_spi_probe,
0066     .remove     = cs35l45_spi_remove,
0067 };
0068 module_spi_driver(cs35l45_spi_driver);
0069
0070 MODULE_DESCRIPTION("SPI CS35L45 driver");
0071 MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>");
0072 MODULE_LICENSE("Dual BSD/GPL");
0073 MODULE_IMPORT_NS(SND_SOC_CS35L45);
0074 MODULE_IMPORT_NS(SND_SOC_CS35L45_TABLES);