LXR linux/sound/soc/codecs/pcm512x-i2c.c

   1/*
   2 * Driver for the PCM512x CODECs
   3 *
   4 * Author:      Mark Brown <broonie@linaro.org>
   5 *              Copyright 2014 Linaro Ltd
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License
   9 * version 2 as published by the Free Software Foundation.
  10 *
  11 * This program is distributed in the hope that it will be useful, but
  12 * WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 * General Public License for more details.
  15 */
  16
  17#include <linux/init.h>
  18#include <linux/module.h>
  19#include <linux/i2c.h>
  20
  21#include "pcm512x.h"
  22
  23static int pcm512x_i2c_probe(struct i2c_client *i2c,
  24                             const struct i2c_device_id *id)
  25{
  26        struct regmap *regmap;
  27        struct regmap_config config = pcm512x_regmap;
  28
  29        /* msb needs to be set to enable auto-increment of addresses */
  30        config.read_flag_mask = 0x80;
  31        config.write_flag_mask = 0x80;
  32
  33        regmap = devm_regmap_init_i2c(i2c, &config);
  34        if (IS_ERR(regmap))
  35                return PTR_ERR(regmap);
  36
  37        return pcm512x_probe(&i2c->dev, regmap);
  38}
  39
  40static int pcm512x_i2c_remove(struct i2c_client *i2c)
  41{
  42        pcm512x_remove(&i2c->dev);
  43        return 0;
  44}
  45
  46static const struct i2c_device_id pcm512x_i2c_id[] = {
  47        { "pcm5121", },
  48        { "pcm5122", },
  49        { "pcm5141", },
  50        { "pcm5142", },
  51        { }
  52};
  53MODULE_DEVICE_TABLE(i2c, pcm512x_i2c_id);
  54
  55static const struct of_device_id pcm512x_of_match[] = {
  56        { .compatible = "ti,pcm5121", },
  57        { .compatible = "ti,pcm5122", },
  58        { .compatible = "ti,pcm5141", },
  59        { .compatible = "ti,pcm5142", },
  60        { }
  61};
  62MODULE_DEVICE_TABLE(of, pcm512x_of_match);
  63
  64static struct i2c_driver pcm512x_i2c_driver = {
  65        .probe          = pcm512x_i2c_probe,
  66        .remove         = pcm512x_i2c_remove,
  67        .id_table       = pcm512x_i2c_id,
  68        .driver         = {
  69                .name   = "pcm512x",
  70                .of_match_table = pcm512x_of_match,
  71                .pm     = &pcm512x_pm_ops,
  72        },
  73};
  74
  75module_i2c_driver(pcm512x_i2c_driver);
  76
  77MODULE_DESCRIPTION("ASoC PCM512x codec driver - I2C");
  78MODULE_AUTHOR("Mark Brown <broonie@linaro.org>");
  79MODULE_LICENSE("GPL v2");
  80