sound/soc/codecs/wm8804-i2c.c

   1 /*
   2  * wm8804-i2c.c  --  WM8804 S/PDIF transceiver driver - I2C
   3  *
   4  * Copyright 2015 Cirrus Logic Inc
   5  *
   6  * Author: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/init.h>
  14 #include <linux/module.h>
  15 #include <linux/i2c.h>
  16 #include <linux/acpi.h>
  17
  18 #include "wm8804.h"
  19
  20 static int wm8804_i2c_probe(struct i2c_client *i2c,
  21                             const struct i2c_device_id *id)
  22 {
  23         struct regmap *regmap;
  24
  25         regmap = devm_regmap_init_i2c(i2c, &wm8804_regmap_config);
  26         if (IS_ERR(regmap))
  27                 return PTR_ERR(regmap);
  28
  29         return wm8804_probe(&i2c->dev, regmap);
  30 }
  31
  32 static int wm8804_i2c_remove(struct i2c_client *i2c)
  33 {
  34         wm8804_remove(&i2c->dev);
  35         return 0;
  36 }
  37
  38 static const struct i2c_device_id wm8804_i2c_id[] = {
  39         { "wm8804", 0 },
  40         { }
  41 };
  42 MODULE_DEVICE_TABLE(i2c, wm8804_i2c_id);
  43
  44 #if defined(CONFIG_OF)
  45 static const struct of_device_id wm8804_of_match[] = {
  46         { .compatible = "wlf,wm8804", },
  47         { }
  48 };
  49 MODULE_DEVICE_TABLE(of, wm8804_of_match);
  50 #endif
  51
  52 #ifdef CONFIG_ACPI
  53 static const struct acpi_device_id wm8804_acpi_match[] = {
  54         { "1AEC8804", 0 }, /* Wolfson PCI ID + part ID */
  55         { "10138804", 0 }, /* Cirrus Logic PCI ID + part ID */
  56         { },
  57 };
  58 MODULE_DEVICE_TABLE(acpi, wm8804_acpi_match);
  59 #endif
  60
  61 static struct i2c_driver wm8804_i2c_driver = {
  62         .driver = {
  63                 .name = "wm8804",
  64                 .pm = &wm8804_pm,
  65                 .of_match_table = of_match_ptr(wm8804_of_match),
  66                 .acpi_match_table = ACPI_PTR(wm8804_acpi_match),
  67         },
  68         .probe = wm8804_i2c_probe,
  69         .remove = wm8804_i2c_remove,
  70         .id_table = wm8804_i2c_id
  71 };
  72
  73 module_i2c_driver(wm8804_i2c_driver);
  74
  75 MODULE_DESCRIPTION("ASoC WM8804 driver - I2C");
  76 MODULE_AUTHOR("Charles Keepax <ckeepax@opensource.wolfsonmicro.com>");
  77 MODULE_LICENSE("GPL");