sound/soc/codecs/cs35l45-i2c.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // cs35l45-i2c.c -- CS35L45 I2C 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/i2c.h>
  12 #include <linux/regmap.h>
  13
  14 #include "cs35l45.h"
  15
  16 static int cs35l45_i2c_probe(struct i2c_client *client)
  17 {
  18         struct cs35l45_private *cs35l45;
  19         struct device *dev = &client->dev;
  20         int ret;
  21
  22         cs35l45 = devm_kzalloc(dev, sizeof(struct cs35l45_private), GFP_KERNEL);
  23         if (!cs35l45)
  24                 return -ENOMEM;
  25
  26         i2c_set_clientdata(client, cs35l45);
  27         cs35l45->regmap = devm_regmap_init_i2c(client, &cs35l45_i2c_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         cs35l45->irq = client->irq;
  36         cs35l45->bus_type = CONTROL_BUS_I2C;
  37         cs35l45->i2c_addr = client->addr;
  38
  39         return cs35l45_probe(cs35l45);
  40 }
  41
  42 static void cs35l45_i2c_remove(struct i2c_client *client)
  43 {
  44         struct cs35l45_private *cs35l45 = i2c_get_clientdata(client);
  45
  46         cs35l45_remove(cs35l45);
  47 }
  48
  49 static const struct of_device_id cs35l45_of_match[] = {
  50         { .compatible = "cirrus,cs35l45" },
  51         {},
  52 };
  53 MODULE_DEVICE_TABLE(of, cs35l45_of_match);
  54
  55 static const struct i2c_device_id cs35l45_id_i2c[] = {
  56         { "cs35l45", 0 },
  57         {}
  58 };
  59 MODULE_DEVICE_TABLE(i2c, cs35l45_id_i2c);
  60
  61 static struct i2c_driver cs35l45_i2c_driver = {
  62         .driver = {
  63                 .name           = "cs35l45",
  64                 .of_match_table = cs35l45_of_match,
  65                 .pm             = pm_ptr(&cs35l45_pm_ops),
  66         },
  67         .id_table       = cs35l45_id_i2c,
  68         .probe          = cs35l45_i2c_probe,
  69         .remove         = cs35l45_i2c_remove,
  70 };
  71 module_i2c_driver(cs35l45_i2c_driver);
  72
  73 MODULE_DESCRIPTION("I2C CS35L45 driver");
  74 MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>");
  75 MODULE_LICENSE("GPL");
  76 MODULE_IMPORT_NS(SND_SOC_CS35L45);