// SPDX-License-Identifier: GPL-2.0-only // // Copyright(c) 2021-2022 Intel Corporation // // Authors: Cezary Rojewski // Amadeusz Slawinski // #include #include #include #include #include "../utils.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"))); 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_create_dai_links(struct device *dev, const char *codec_name, struct snd_soc_dai_link **links, int *num_links) { struct snd_soc_dai_link_component *platform; struct snd_soc_dai_link *dl; const int num_dl = 2; dl = devm_kcalloc(dev, num_dl, sizeof(*dl), GFP_KERNEL); platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL); if (!dl || !platform) return -ENOMEM; dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL); if (!dl->codecs) return -ENOMEM; dl->codecs->name = devm_kstrdup(dev, codec_name, GFP_KERNEL); dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, "dmic-hifi"); if (!dl->codecs->name || !dl->codecs->dai_name) return -ENOMEM; platform->name = dev_name(dev); dl[0].num_cpus = 1; dl[0].num_codecs = 1; dl[0].platforms = platform; dl[0].num_platforms = 1; dl[0].nonatomic = 1; dl[0].no_pcm = 1; dl[0].capture_only = 1; memcpy(&dl[1], &dl[0], sizeof(*dl)); dl[0].name = "DMIC"; dl[0].cpus = dmic_pin; dl[0].id = 0; dl[1].name = "DMIC WoV"; dl[1].cpus = dmic_wov_pin; dl[1].id = 1; dl[1].ignore_suspend = 1; *links = dl; *num_links = num_dl; return 0; } static int avs_dmic_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct snd_soc_acpi_mach *mach; struct avs_mach_pdata *pdata; struct snd_soc_card *card; int ret; mach = dev_get_platdata(dev); pdata = mach->pdata; card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); if (!card) return -ENOMEM; ret = avs_create_dai_links(dev, pdata->codec_name, &card->dai_link, &card->num_links); if (ret) return ret; if (pdata->obsolete_card_names) { card->name = "avs_dmic"; } else { card->driver_name = "avs_dmic"; card->long_name = card->name = "AVS DMIC"; } card->dev = dev; card->owner = THIS_MODULE; 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; return devm_snd_soc_register_deferrable_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");