sound/pci/hda/cs35l56_hda_spi.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 //
   3 // CS35L56 HDA audio driver SPI binding
   4 //
   5 // Copyright (C) 2023 Cirrus Logic, Inc. and
   6 //                    Cirrus Logic International Semiconductor Ltd.
   7
   8 #include <linux/module.h>
   9 #include <linux/regmap.h>
  10 #include <linux/spi/spi.h>
  11
  12 #include "cs35l56_hda.h"
  13
  14 static int cs35l56_hda_spi_probe(struct spi_device *spi)
  15 {
  16         struct cs35l56_hda *cs35l56;
  17         int ret;
  18
  19         cs35l56 = devm_kzalloc(&spi->dev, sizeof(*cs35l56), GFP_KERNEL);
  20         if (!cs35l56)
  21                 return -ENOMEM;
  22
  23         cs35l56->base.dev = &spi->dev;
  24
  25 #ifdef CS35L56_WAKE_HOLD_TIME_US
  26         cs35l56->base.can_hibernate = true;
  27 #endif
  28         cs35l56->base.regmap = devm_regmap_init_spi(spi, &cs35l56_regmap_spi);
  29         if (IS_ERR(cs35l56->base.regmap)) {
  30                 ret = PTR_ERR(cs35l56->base.regmap);
  31                 dev_err(cs35l56->base.dev, "Failed to allocate register map: %d\n",
  32                         ret);
  33                 return ret;
  34         }
  35
  36         ret = cs35l56_hda_common_probe(cs35l56, spi->chip_select);
  37         if (ret)
  38                 return ret;
  39         ret = cs35l56_irq_request(&cs35l56->base, spi->irq);
  40         if (ret < 0)
  41                 cs35l56_hda_remove(cs35l56->base.dev);
  42
  43         return ret;
  44 }
  45
  46 static void cs35l56_hda_spi_remove(struct spi_device *spi)
  47 {
  48         cs35l56_hda_remove(&spi->dev);
  49 }
  50
  51 static const struct spi_device_id cs35l56_hda_spi_id[] = {
  52         { "cs35l56-hda", 0 },
  53         {}
  54 };
  55
  56 static struct spi_driver cs35l56_hda_spi_driver = {
  57         .driver = {
  58                 .name           = "cs35l56-hda",
  59                 .pm             = &cs35l56_hda_pm_ops,
  60         },
  61         .id_table       = cs35l56_hda_spi_id,
  62         .probe          = cs35l56_hda_spi_probe,
  63         .remove         = cs35l56_hda_spi_remove,
  64 };
  65 module_spi_driver(cs35l56_hda_spi_driver);
  66
  67 MODULE_DESCRIPTION("HDA CS35L56 SPI driver");
  68 MODULE_IMPORT_NS(SND_HDA_SCODEC_CS35L56);
  69 MODULE_IMPORT_NS(SND_SOC_CS35L56_SHARED);
  70 MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
  71 MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>");
  72 MODULE_LICENSE("GPL");