// 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");