127 lines
3.1 KiB
C
127 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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//
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// Copyright(c) 2021-2022 Intel Corporation
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//
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// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
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// Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
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//
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#include <linux/device.h>
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#include <linux/module.h>
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#include <sound/soc.h>
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#include <sound/soc-acpi.h>
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#include "../utils.h"
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SND_SOC_DAILINK_DEF(dmic_pin, DAILINK_COMP_ARRAY(COMP_CPU("DMIC Pin")));
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SND_SOC_DAILINK_DEF(dmic_wov_pin, DAILINK_COMP_ARRAY(COMP_CPU("DMIC WoV Pin")));
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static const struct snd_soc_dapm_widget card_widgets[] = {
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SND_SOC_DAPM_MIC("SoC DMIC", NULL),
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};
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static const struct snd_soc_dapm_route card_routes[] = {
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{"DMic", NULL, "SoC DMIC"},
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};
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static int avs_create_dai_links(struct device *dev, const char *codec_name,
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struct snd_soc_dai_link **links, int *num_links)
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{
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struct snd_soc_dai_link_component *platform;
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struct snd_soc_dai_link *dl;
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const int num_dl = 2;
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dl = devm_kcalloc(dev, num_dl, sizeof(*dl), GFP_KERNEL);
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platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
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if (!dl || !platform)
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return -ENOMEM;
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dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);
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if (!dl->codecs)
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return -ENOMEM;
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dl->codecs->name = devm_kstrdup(dev, codec_name, GFP_KERNEL);
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dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, "dmic-hifi");
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if (!dl->codecs->name || !dl->codecs->dai_name)
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return -ENOMEM;
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platform->name = dev_name(dev);
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dl[0].num_cpus = 1;
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dl[0].num_codecs = 1;
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dl[0].platforms = platform;
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dl[0].num_platforms = 1;
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dl[0].nonatomic = 1;
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dl[0].no_pcm = 1;
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dl[0].capture_only = 1;
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memcpy(&dl[1], &dl[0], sizeof(*dl));
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dl[0].name = "DMIC";
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dl[0].cpus = dmic_pin;
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dl[0].id = 0;
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dl[1].name = "DMIC WoV";
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dl[1].cpus = dmic_wov_pin;
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dl[1].id = 1;
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dl[1].ignore_suspend = 1;
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*links = dl;
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*num_links = num_dl;
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return 0;
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}
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static int avs_dmic_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct snd_soc_acpi_mach *mach;
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struct avs_mach_pdata *pdata;
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struct snd_soc_card *card;
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int ret;
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mach = dev_get_platdata(dev);
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pdata = mach->pdata;
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card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
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if (!card)
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return -ENOMEM;
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ret = avs_create_dai_links(dev, pdata->codec_name, &card->dai_link, &card->num_links);
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if (ret)
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return ret;
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if (pdata->obsolete_card_names) {
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card->name = "avs_dmic";
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} else {
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card->driver_name = "avs_dmic";
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card->long_name = card->name = "AVS DMIC";
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}
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card->dev = dev;
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card->owner = THIS_MODULE;
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card->dapm_widgets = card_widgets;
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card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
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card->dapm_routes = card_routes;
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card->num_dapm_routes = ARRAY_SIZE(card_routes);
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card->fully_routed = true;
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return devm_snd_soc_register_deferrable_card(dev, card);
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}
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static const struct platform_device_id avs_dmic_driver_ids[] = {
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{
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.name = "avs_dmic",
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},
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{},
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};
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MODULE_DEVICE_TABLE(platform, avs_dmic_driver_ids);
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static struct platform_driver avs_dmic_driver = {
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.probe = avs_dmic_probe,
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.driver = {
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.name = "avs_dmic",
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.pm = &snd_soc_pm_ops,
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},
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.id_table = avs_dmic_driver_ids,
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};
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module_platform_driver(avs_dmic_driver);
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MODULE_DESCRIPTION("Intel DMIC machine driver");
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MODULE_LICENSE("GPL");
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