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// SPDX-License-Identifier: GPL-2.0-only
//
// Copyright(c) 2021-2022 Intel Corporation
//
// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
// Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
//
#include <linux/device.h>
#include <linux/module.h>
#include <sound/soc.h>
#include <sound/soc-acpi.h>
SND_SOC_DAILINK_DEF(dmic_pin, DAILINK_COMP_ARRAY(COMP_CPU("DMIC Pin")));
SND_SOC_DAILINK_DEF(dmic_wov_pin, DAILINK_COMP_ARRAY(COMP_CPU("DMIC WoV Pin")));
SND_SOC_DAILINK_DEF(dmic_codec, DAILINK_COMP_ARRAY(COMP_CODEC("dmic-codec", "dmic-hifi")));
/* Name overridden on probe */
SND_SOC_DAILINK_DEF(platform, DAILINK_COMP_ARRAY(COMP_PLATFORM("")));
static struct snd_soc_dai_link card_dai_links[] = {
/* Back ends */
{
.name = "DMIC",
.id = 0,
.dpcm_capture = 1,
.nonatomic = 1,
.no_pcm = 1,
SND_SOC_DAILINK_REG(dmic_pin, dmic_codec, platform),
},
{
.name = "DMIC WoV",
.id = 1,
.dpcm_capture = 1,
.nonatomic = 1,
.no_pcm = 1,
.ignore_suspend = 1,
SND_SOC_DAILINK_REG(dmic_wov_pin, dmic_codec, platform),
},
};
static const struct snd_soc_dapm_widget card_widgets[] = {
SND_SOC_DAPM_MIC("SoC DMIC", NULL),
};
static const struct snd_soc_dapm_route card_routes[] = {
{"DMic", NULL, "SoC DMIC"},
};
static int avs_dmic_probe(struct platform_device *pdev)
{
struct snd_soc_acpi_mach *mach;
struct snd_soc_card *card;
struct device *dev = &pdev->dev;
int ret;
mach = dev_get_platdata(dev);
card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
if (!card)
return -ENOMEM;
card->name = "avs_dmic";
card->dev = dev;
card->owner = THIS_MODULE;
card->dai_link = card_dai_links;
card->num_links = ARRAY_SIZE(card_dai_links);
card->dapm_widgets = card_widgets;
card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
card->dapm_routes = card_routes;
card->num_dapm_routes = ARRAY_SIZE(card_routes);
card->fully_routed = true;
ret = snd_soc_fixup_dai_links_platform_name(card, mach->mach_params.platform);
if (ret)
return ret;
return devm_snd_soc_register_card(dev, card);
}
static const struct platform_device_id avs_dmic_driver_ids[] = {
{
.name = "avs_dmic",
},
{},
};
MODULE_DEVICE_TABLE(platform, avs_dmic_driver_ids);
static struct platform_driver avs_dmic_driver = {
.probe = avs_dmic_probe,
.driver = {
.name = "avs_dmic",
.pm = &snd_soc_pm_ops,
},
.id_table = avs_dmic_driver_ids,
};
module_platform_driver(avs_dmic_driver);
MODULE_DESCRIPTION("Intel DMIC machine driver");
MODULE_LICENSE("GPL");
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