odroidx2_max98090.c
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/*
* Copyright (C) 2014 Samsung Electronics Co., Ltd.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/of.h>
#include <linux/module.h>
#include <sound/soc.h>
#include <sound/pcm_params.h>
#include "i2s.h"
struct odroidx2_drv_data {
const struct snd_soc_dapm_widget *dapm_widgets;
unsigned int num_dapm_widgets;
};
/* The I2S CDCLK output clock frequency for the MAX98090 codec */
#define MAX98090_MCLK 19200000
static struct snd_soc_dai_link odroidx2_dai[];
static int odroidx2_late_probe(struct snd_soc_card *card)
{
struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
struct snd_soc_dai *cpu_dai = card->rtd[0].cpu_dai;
int ret;
ret = snd_soc_dai_set_sysclk(codec_dai, 0, MAX98090_MCLK,
SND_SOC_CLOCK_IN);
if (ret < 0 || of_find_property(odroidx2_dai[0].codec_of_node,
"clocks", NULL))
return ret;
/* Set the cpu DAI configuration in order to use CDCLK */
return snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
0, SND_SOC_CLOCK_OUT);
}
static const struct snd_soc_dapm_widget odroidx2_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_MIC("Mic Jack", NULL),
SND_SOC_DAPM_MIC("DMIC", NULL),
};
static const struct snd_soc_dapm_widget odroidu3_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_SPK("Speakers", NULL),
};
static struct snd_soc_dai_link odroidx2_dai[] = {
{
.name = "MAX98090",
.stream_name = "MAX98090 PCM",
.codec_dai_name = "HiFi",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
}
};
static struct snd_soc_card odroidx2 = {
.owner = THIS_MODULE,
.dai_link = odroidx2_dai,
.num_links = ARRAY_SIZE(odroidx2_dai),
.fully_routed = true,
.late_probe = odroidx2_late_probe,
};
static const struct odroidx2_drv_data odroidx2_drvdata = {
.dapm_widgets = odroidx2_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(odroidx2_dapm_widgets),
};
static const struct odroidx2_drv_data odroidu3_drvdata = {
.dapm_widgets = odroidu3_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(odroidu3_dapm_widgets),
};
static const struct of_device_id odroidx2_audio_of_match[] = {
{
.compatible = "samsung,odroidx2-audio",
.data = &odroidx2_drvdata,
}, {
.compatible = "samsung,odroidu3-audio",
.data = &odroidu3_drvdata,
},
{ },
};
MODULE_DEVICE_TABLE(of, odroidx2_audio_of_match);
static int odroidx2_audio_probe(struct platform_device *pdev)
{
struct device_node *snd_node = pdev->dev.of_node;
struct snd_soc_card *card = &odroidx2;
struct device_node *i2s_node, *codec_node;
struct odroidx2_drv_data *dd;
const struct of_device_id *of_id;
int ret;
of_id = of_match_node(odroidx2_audio_of_match, snd_node);
dd = (struct odroidx2_drv_data *)of_id->data;
card->num_dapm_widgets = dd->num_dapm_widgets;
card->dapm_widgets = dd->dapm_widgets;
card->dev = &pdev->dev;
ret = snd_soc_of_parse_card_name(card, "samsung,model");
if (ret < 0)
return ret;
ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
if (ret < 0)
return ret;
codec_node = of_parse_phandle(snd_node, "samsung,audio-codec", 0);
if (!codec_node) {
dev_err(&pdev->dev,
"Failed parsing samsung,i2s-codec property\n");
return -EINVAL;
}
i2s_node = of_parse_phandle(snd_node, "samsung,i2s-controller", 0);
if (!i2s_node) {
dev_err(&pdev->dev,
"Failed parsing samsung,i2s-controller property\n");
ret = -EINVAL;
goto err_put_codec_n;
}
odroidx2_dai[0].codec_of_node = codec_node;
odroidx2_dai[0].cpu_of_node = i2s_node;
odroidx2_dai[0].platform_of_node = i2s_node;
ret = snd_soc_register_card(card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
ret);
goto err_put_i2s_n;
}
return 0;
err_put_i2s_n:
of_node_put(i2s_node);
err_put_codec_n:
of_node_put(codec_node);
return ret;
}
static int odroidx2_audio_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
snd_soc_unregister_card(card);
of_node_put(odroidx2_dai[0].cpu_of_node);
of_node_put(odroidx2_dai[0].codec_of_node);
return 0;
}
static struct platform_driver odroidx2_audio_driver = {
.driver = {
.name = "odroidx2-audio",
.of_match_table = odroidx2_audio_of_match,
.pm = &snd_soc_pm_ops,
},
.probe = odroidx2_audio_probe,
.remove = odroidx2_audio_remove,
};
module_platform_driver(odroidx2_audio_driver);
MODULE_AUTHOR("Chen Zhen <zhen1.chen@samsung.com>");
MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
MODULE_DESCRIPTION("ALSA SoC Odroid X2/U3 Audio Support");
MODULE_LICENSE("GPL v2");