sound/soc/codecs/cs42xx8-i2c.c

   1 /*
   2  * Cirrus Logic CS42448/CS42888 Audio CODEC DAI I2C driver
   3  *
   4  * Copyright (C) 2014 Freescale Semiconductor, Inc.
   5  *
   6  * Author: Nicolin Chen <Guangyu.Chen@freescale.com>
   7  *
   8  * This file is licensed under the terms of the GNU General Public License
   9  * version 2. This program is licensed "as is" without any warranty of any
  10  * kind, whether express or implied.
  11  */
  12
  13 #include <linux/i2c.h>
  14 #include <linux/module.h>
  15 #include <linux/pm_runtime.h>
  16 #include <sound/soc.h>
  17
  18 #include "cs42xx8.h"
  19
  20 static int cs42xx8_i2c_probe(struct i2c_client *i2c,
  21                              const struct i2c_device_id *id)
  22 {
  23         u32 ret = cs42xx8_probe(&i2c->dev,
  24                         devm_regmap_init_i2c(i2c, &cs42xx8_regmap_config));
  25         if (ret)
  26                 return ret;
  27
  28         pm_runtime_enable(&i2c->dev);
  29         pm_request_idle(&i2c->dev);
  30
  31         return 0;
  32 }
  33
  34 static int cs42xx8_i2c_remove(struct i2c_client *i2c)
  35 {
  36         snd_soc_unregister_codec(&i2c->dev);
  37         pm_runtime_disable(&i2c->dev);
  38
  39         return 0;
  40 }
  41
  42 static struct i2c_device_id cs42xx8_i2c_id[] = {
  43         {"cs42448", (kernel_ulong_t)&cs42448_data},
  44         {"cs42888", (kernel_ulong_t)&cs42888_data},
  45         {}
  46 };
  47 MODULE_DEVICE_TABLE(i2c, cs42xx8_i2c_id);
  48
  49 static struct i2c_driver cs42xx8_i2c_driver = {
  50         .driver = {
  51                 .name = "cs42xx8",
  52                 .owner = THIS_MODULE,
  53                 .pm = &cs42xx8_pm,
  54         },
  55         .probe = cs42xx8_i2c_probe,
  56         .remove = cs42xx8_i2c_remove,
  57         .id_table = cs42xx8_i2c_id,
  58 };
  59
  60 module_i2c_driver(cs42xx8_i2c_driver);
  61
  62 MODULE_DESCRIPTION("Cirrus Logic CS42448/CS42888 ALSA SoC Codec I2C Driver");
  63 MODULE_AUTHOR("Freescale Semiconductor, Inc.");
  64 MODULE_LICENSE("GPL");