LXR linux/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
  20static int cs42xx8_i2c_probe(struct i2c_client *i2c,
  21                             const struct i2c_device_id *id)
  22{
  23        int 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
  34static int cs42xx8_i2c_remove(struct i2c_client *i2c)
  35{
  36        pm_runtime_disable(&i2c->dev);
  37
  38        return 0;
  39}
  40
  41static struct i2c_device_id cs42xx8_i2c_id[] = {
  42        {"cs42448", (kernel_ulong_t)&cs42448_data},
  43        {"cs42888", (kernel_ulong_t)&cs42888_data},
  44        {}
  45};
  46MODULE_DEVICE_TABLE(i2c, cs42xx8_i2c_id);
  47
  48static struct i2c_driver cs42xx8_i2c_driver = {
  49        .driver = {
  50                .name = "cs42xx8",
  51                .pm = &cs42xx8_pm,
  52                .of_match_table = cs42xx8_of_match,
  53        },
  54        .probe = cs42xx8_i2c_probe,
  55        .remove = cs42xx8_i2c_remove,
  56        .id_table = cs42xx8_i2c_id,
  57};
  58
  59module_i2c_driver(cs42xx8_i2c_driver);
  60
  61MODULE_DESCRIPTION("Cirrus Logic CS42448/CS42888 ALSA SoC Codec I2C Driver");
  62MODULE_AUTHOR("Freescale Semiconductor, Inc.");
  63MODULE_LICENSE("GPL");
  64