sound/soc/codecs/cs35l56-spi.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 //
   3 // CS35L56 ALSA SoC audio driver SPI binding
   4 //
   5 // Copyright (C) 2023 Cirrus Logic, Inc. and
   6 //                    Cirrus Logic International Semiconductor Ltd.
   7
   8 #include <linux/acpi.h>
   9 #include <linux/module.h>
  10 #include <linux/moduleparam.h>
  11 #include <linux/regmap.h>
  12 #include <linux/spi/spi.h>
  13 #include <linux/types.h>
  14
  15 #include "cs35l56.h"
  16
  17 static int cs35l56_spi_probe(struct spi_device *spi)
  18 {
  19         const struct regmap_config *regmap_config = &cs35l56_regmap_spi;
  20         struct cs35l56_private *cs35l56;
  21         int ret;
  22
  23         cs35l56 = devm_kzalloc(&spi->dev, sizeof(struct cs35l56_private), GFP_KERNEL);
  24         if (!cs35l56)
  25                 return -ENOMEM;
  26
  27         spi_set_drvdata(spi, cs35l56);
  28         cs35l56->base.regmap = devm_regmap_init_spi(spi, regmap_config);
  29         if (IS_ERR(cs35l56->base.regmap)) {
  30                 ret = PTR_ERR(cs35l56->base.regmap);
  31                 return dev_err_probe(&spi->dev, ret, "Failed to allocate register map\n");
  32         }
  33
  34         cs35l56->base.dev = &spi->dev;
  35         cs35l56->base.can_hibernate = true;
  36
  37         ret = cs35l56_common_probe(cs35l56);
  38         if (ret != 0)
  39                 return ret;
  40
  41         ret = cs35l56_init(cs35l56);
  42         if (ret == 0)
  43                 ret = cs35l56_irq_request(&cs35l56->base, spi->irq);
  44         if (ret < 0)
  45                 cs35l56_remove(cs35l56);
  46
  47         return ret;
  48 }
  49
  50 static void cs35l56_spi_remove(struct spi_device *spi)
  51 {
  52         struct cs35l56_private *cs35l56 = spi_get_drvdata(spi);
  53
  54         cs35l56_remove(cs35l56);
  55 }
  56
  57 static const struct spi_device_id cs35l56_id_spi[] = {
  58         { "cs35l56", 0 },
  59         {}
  60 };
  61 MODULE_DEVICE_TABLE(spi, cs35l56_id_spi);
  62
  63 #ifdef CONFIG_ACPI
  64 static const struct acpi_device_id cs35l56_asoc_acpi_match[] = {
  65         { "CSC355C", 0 },
  66         {},
  67 };
  68 MODULE_DEVICE_TABLE(acpi, cs35l56_asoc_acpi_match);
  69 #endif
  70
  71 static struct spi_driver cs35l56_spi_driver = {
  72         .driver = {
  73                 .name           = "cs35l56",
  74                 .pm = pm_ptr(&cs35l56_pm_ops_i2c_spi),
  75                 .acpi_match_table = ACPI_PTR(cs35l56_asoc_acpi_match),
  76         },
  77         .id_table       = cs35l56_id_spi,
  78         .probe          = cs35l56_spi_probe,
  79         .remove         = cs35l56_spi_remove,
  80 };
  81
  82 module_spi_driver(cs35l56_spi_driver);
  83
  84 MODULE_DESCRIPTION("ASoC CS35L56 SPI driver");
  85 MODULE_IMPORT_NS("SND_SOC_CS35L56_CORE");
  86 MODULE_IMPORT_NS("SND_SOC_CS35L56_SHARED");
  87 MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
  88 MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>");
  89 MODULE_LICENSE("GPL");