sound/soc/codecs/cs35l56-i2c.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 //
   3 // CS35L56 ALSA SoC audio driver I2C 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/i2c.h>
  10 #include <linux/module.h>
  11 #include <linux/moduleparam.h>
  12 #include <linux/regmap.h>
  13 #include <linux/slab.h>
  14 #include <linux/types.h>
  15
  16 #include "cs35l56.h"
  17
  18 static int cs35l56_i2c_probe(struct i2c_client *client)
  19 {
  20         struct cs35l56_private *cs35l56;
  21         struct device *dev = &client->dev;
  22         const struct regmap_config *regmap_config = &cs35l56_regmap_i2c;
  23         int ret;
  24
  25         cs35l56 = devm_kzalloc(dev, sizeof(struct cs35l56_private), GFP_KERNEL);
  26         if (!cs35l56)
  27                 return -ENOMEM;
  28
  29         cs35l56->base.dev = dev;
  30         cs35l56->base.can_hibernate = true;
  31
  32         i2c_set_clientdata(client, cs35l56);
  33         cs35l56->base.regmap = devm_regmap_init_i2c(client, regmap_config);
  34         if (IS_ERR(cs35l56->base.regmap)) {
  35                 ret = PTR_ERR(cs35l56->base.regmap);
  36                 return dev_err_probe(cs35l56->base.dev, ret, "Failed to allocate register map\n");
  37         }
  38
  39         ret = cs35l56_common_probe(cs35l56);
  40         if (ret != 0)
  41                 return ret;
  42
  43         ret = cs35l56_init(cs35l56);
  44         if (ret == 0)
  45                 ret = cs35l56_irq_request(&cs35l56->base, client->irq);
  46         if (ret < 0)
  47                 cs35l56_remove(cs35l56);
  48
  49         return ret;
  50 }
  51
  52 static void cs35l56_i2c_remove(struct i2c_client *client)
  53 {
  54         struct cs35l56_private *cs35l56 = i2c_get_clientdata(client);
  55
  56         cs35l56_remove(cs35l56);
  57 }
  58
  59 static const struct i2c_device_id cs35l56_id_i2c[] = {
  60         { "cs35l56" },
  61         {}
  62 };
  63 MODULE_DEVICE_TABLE(i2c, cs35l56_id_i2c);
  64
  65 #ifdef CONFIG_ACPI
  66 static const struct acpi_device_id cs35l56_asoc_acpi_match[] = {
  67         { "CSC355C", 0 },
  68         {},
  69 };
  70 MODULE_DEVICE_TABLE(acpi, cs35l56_asoc_acpi_match);
  71 #endif
  72
  73 static struct i2c_driver cs35l56_i2c_driver = {
  74         .driver = {
  75                 .name           = "cs35l56",
  76                 .pm = pm_ptr(&cs35l56_pm_ops_i2c_spi),
  77                 .acpi_match_table = ACPI_PTR(cs35l56_asoc_acpi_match),
  78         },
  79         .id_table       = cs35l56_id_i2c,
  80         .probe          = cs35l56_i2c_probe,
  81         .remove         = cs35l56_i2c_remove,
  82 };
  83
  84 module_i2c_driver(cs35l56_i2c_driver);
  85
  86 MODULE_DESCRIPTION("ASoC CS35L56 I2C driver");
  87 MODULE_IMPORT_NS(SND_SOC_CS35L56_CORE);
  88 MODULE_IMPORT_NS(SND_SOC_CS35L56_SHARED);
  89 MODULE_AUTHOR("Richard Fitzgerald <[email protected]>");
  90 MODULE_AUTHOR("Simon Trimmer <[email protected]>");
  91 MODULE_LICENSE("GPL");