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/*
* fsl_sai_wm9712.c -- SoC audio for Freescale SAI
*
* Copyright 2014 Stefan Agner, Toradex AG <stefan@agner.ch>
*
* 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/module.h>
#include <sound/soc.h>
#define DRV_NAME "fsl-sai-ac97-dt-driver"
static struct snd_soc_dai_link fsl_sai_wm9712_dai = {
.name = "AC97 HiFi",
.stream_name = "AC97 HiFi",
.codec_dai_name = "wm9712-hifi",
.codec_name = "wm9712-codec",
};
static const struct snd_soc_dapm_widget tegra_wm9712_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone", NULL),
SND_SOC_DAPM_LINE("LineIn", NULL),
SND_SOC_DAPM_MIC("Mic", NULL),
};
static struct snd_soc_card snd_soc_card_fsl_sai_wm9712 = {
.name = "Colibri VF61 AC97 Audio",
.owner = THIS_MODULE,
.dai_link = &fsl_sai_wm9712_dai,
.num_links = 1,
.dapm_widgets = tegra_wm9712_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tegra_wm9712_dapm_widgets),
.fully_routed = true,
};
static struct platform_device *codec;
static int fsl_sai_wm9712_driver_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct snd_soc_card *card = &snd_soc_card_fsl_sai_wm9712;
int ret;
card->dev = &pdev->dev;
platform_set_drvdata(pdev, card);
codec = platform_device_alloc("wm9712-codec", -1);
if (!codec)
return -ENOMEM;
ret = platform_device_add(codec);
if (ret)
goto codec_put;
ret = snd_soc_of_parse_card_name(card, "fsl,model");
if (ret)
goto codec_unregister;
ret = snd_soc_of_parse_audio_routing(card, "fsl,audio-routing");
if (ret)
goto codec_unregister;
fsl_sai_wm9712_dai.cpu_of_node = of_parse_phandle(np,
"fsl,ac97-controller", 0);
if (!fsl_sai_wm9712_dai.cpu_of_node) {
dev_err(&pdev->dev,
"Property 'fsl,ac97-controller' missing or invalid\n");
ret = -EINVAL;
goto codec_unregister;
}
fsl_sai_wm9712_dai.platform_of_node = fsl_sai_wm9712_dai.cpu_of_node;
ret = snd_soc_register_card(card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
ret);
goto codec_unregister;
}
return 0;
codec_unregister:
platform_device_del(codec);
codec_put:
platform_device_put(codec);
return ret;
}
static int fsl_sai_wm9712_driver_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
snd_soc_unregister_card(card);
platform_device_unregister(codec);
return 0;
}
static const struct of_device_id fsl_sai_wm9712_of_match[] = {
{ .compatible = "fsl,fsl-sai-audio-wm9712", },
{},
};
static struct platform_driver fsl_sai_wm9712_driver = {
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
.of_match_table = fsl_sai_wm9712_of_match,
},
.probe = fsl_sai_wm9712_driver_probe,
.remove = fsl_sai_wm9712_driver_remove,
};
module_platform_driver(fsl_sai_wm9712_driver);
/* Module information */
MODULE_AUTHOR("Stefan Agner <stefan@agner.ch>");
MODULE_DESCRIPTION("ALSA SoC Freescale SAI+WM9712");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(of, fsl_sai_wm9712_of_match);
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