sound/soc/codecs/cs35l45-spi.c

   1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2 //
   3 // cs35l45-spi.c -- CS35L45 SPI driver
   4 //
   5 // Copyright 2019-2022 Cirrus Logic, Inc.
   6 //
   7 // Author: James Schulman <james.schulman@cirrus.com>
   8
   9 #include <linux/device.h>
  10 #include <linux/module.h>
  11 #include <linux/regmap.h>
  12 #include <linux/spi/spi.h>
  13
  14 #include "cs35l45.h"
  15
  16 static int cs35l45_spi_probe(struct spi_device *spi)
  17 {
  18         struct cs35l45_private *cs35l45;
  19         struct device *dev = &spi->dev;
  20         int ret;
  21
  22         cs35l45 = devm_kzalloc(dev, sizeof(struct cs35l45_private), GFP_KERNEL);
  23         if (cs35l45 == NULL)
  24                 return -ENOMEM;
  25
  26         spi_set_drvdata(spi, cs35l45);
  27         cs35l45->regmap = devm_regmap_init_spi(spi, &cs35l45_spi_regmap);
  28         if (IS_ERR(cs35l45->regmap)) {
  29                 ret = PTR_ERR(cs35l45->regmap);
  30                 dev_err(dev, "Failed to allocate register map: %d\n", ret);
  31                 return ret;
  32         }
  33
  34         cs35l45->dev = dev;
  35
  36         return cs35l45_probe(cs35l45);
  37 }
  38
  39 static void cs35l45_spi_remove(struct spi_device *spi)
  40 {
  41         struct cs35l45_private *cs35l45 = spi_get_drvdata(spi);
  42
  43         cs35l45_remove(cs35l45);
  44 }
  45
  46 static const struct of_device_id cs35l45_of_match[] = {
  47         { .compatible = "cirrus,cs35l45" },
  48         {},
  49 };
  50 MODULE_DEVICE_TABLE(of, cs35l45_of_match);
  51
  52 static const struct spi_device_id cs35l45_id_spi[] = {
  53         { "cs35l45", 0 },
  54         {}
  55 };
  56 MODULE_DEVICE_TABLE(spi, cs35l45_id_spi);
  57
  58 static struct spi_driver cs35l45_spi_driver = {
  59         .driver = {
  60                 .name           = "cs35l45",
  61                 .of_match_table = cs35l45_of_match,
  62                 .pm             = &cs35l45_pm_ops,
  63         },
  64         .id_table       = cs35l45_id_spi,
  65         .probe          = cs35l45_spi_probe,
  66         .remove         = cs35l45_spi_remove,
  67 };
  68 module_spi_driver(cs35l45_spi_driver);
  69
  70 MODULE_DESCRIPTION("SPI CS35L45 driver");
  71 MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>");
  72 MODULE_LICENSE("Dual BSD/GPL");
  73 MODULE_IMPORT_NS(SND_SOC_CS35L45);
  74 MODULE_IMPORT_NS(SND_SOC_CS35L45_TABLES);