drivers/mfd/cs40l50-spi.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * CS40L50 Advanced Haptic Driver with waveform memory,
   4  * integrated DSP, and closed-loop algorithms
   5  *
   6  * Copyright 2024 Cirrus Logic, Inc.
   7  *
   8  * Author: James Ogletree <james.ogletree@cirrus.com>
   9  */
  10
  11 #include <linux/mfd/cs40l50.h>
  12 #include <linux/spi/spi.h>
  13
  14 static int cs40l50_spi_probe(struct spi_device *spi)
  15 {
  16         struct cs40l50 *cs40l50;
  17
  18         cs40l50 = devm_kzalloc(&spi->dev, sizeof(*cs40l50), GFP_KERNEL);
  19         if (!cs40l50)
  20                 return -ENOMEM;
  21
  22         spi_set_drvdata(spi, cs40l50);
  23
  24         cs40l50->dev = &spi->dev;
  25         cs40l50->irq = spi->irq;
  26
  27         cs40l50->regmap = devm_regmap_init_spi(spi, &cs40l50_regmap);
  28         if (IS_ERR(cs40l50->regmap))
  29                 return dev_err_probe(cs40l50->dev, PTR_ERR(cs40l50->regmap),
  30                                      "Failed to initialize register map\n");
  31
  32         return cs40l50_probe(cs40l50);
  33 }
  34
  35 static void cs40l50_spi_remove(struct spi_device *spi)
  36 {
  37         struct cs40l50 *cs40l50 = spi_get_drvdata(spi);
  38
  39         cs40l50_remove(cs40l50);
  40 }
  41
  42 static const struct spi_device_id cs40l50_id_spi[] = {
  43         { "cs40l50" },
  44         {}
  45 };
  46 MODULE_DEVICE_TABLE(spi, cs40l50_id_spi);
  47
  48 static const struct of_device_id cs40l50_of_match[] = {
  49         { .compatible = "cirrus,cs40l50" },
  50         {}
  51 };
  52 MODULE_DEVICE_TABLE(of, cs40l50_of_match);
  53
  54 static struct spi_driver cs40l50_spi_driver = {
  55         .driver = {
  56                 .name = "cs40l50",
  57                 .of_match_table = cs40l50_of_match,
  58                 .pm = pm_ptr(&cs40l50_pm_ops),
  59         },
  60         .id_table = cs40l50_id_spi,
  61         .probe = cs40l50_spi_probe,
  62         .remove = cs40l50_spi_remove,
  63 };
  64 module_spi_driver(cs40l50_spi_driver);
  65
  66 MODULE_DESCRIPTION("CS40L50 SPI Driver");
  67 MODULE_AUTHOR("James Ogletree, Cirrus Logic Inc. <james.ogletree@cirrus.com>");
  68 MODULE_LICENSE("GPL");