diff options
Diffstat (limited to 'sound/soc/intel/avs/boards/dmic.c')
| -rw-r--r-- | sound/soc/intel/avs/boards/dmic.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/sound/soc/intel/avs/boards/dmic.c b/sound/soc/intel/avs/boards/dmic.c new file mode 100644 index 000000000000..bf6f580a5164 --- /dev/null +++ b/sound/soc/intel/avs/boards/dmic.c @@ -0,0 +1,126 @@ +// 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> +#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"); |