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1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)2//3// This file is provided under a dual BSD/GPLv2 license. When using or4// redistributing this file, you may do so under either license.5//6// Copyright(c) 2018 Intel Corporation7//8// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>9//10 11#include <linux/module.h>12#include <sound/sof.h>13#include "sof-audio.h"14#include "sof-priv.h"15 16static struct snd_soc_card sof_nocodec_card = {17 .name = "nocodec", /* the sof- prefix is added by the core */18 .topology_shortname = "sof-nocodec",19 .owner = THIS_MODULE20};21 22static int sof_nocodec_bes_setup(struct device *dev,23 struct snd_soc_dai_driver *drv,24 struct snd_soc_dai_link *links,25 int link_num, struct snd_soc_card *card)26{27 struct snd_soc_dai_link_component *dlc;28 int i;29 30 if (!drv || !links || !card)31 return -EINVAL;32 33 /* set up BE dai_links */34 for (i = 0; i < link_num; i++) {35 dlc = devm_kcalloc(dev, 2, sizeof(*dlc), GFP_KERNEL);36 if (!dlc)37 return -ENOMEM;38 39 links[i].name = devm_kasprintf(dev, GFP_KERNEL,40 "NoCodec-%d", i);41 if (!links[i].name)42 return -ENOMEM;43 44 links[i].stream_name = links[i].name;45 46 links[i].cpus = &dlc[0];47 links[i].codecs = &snd_soc_dummy_dlc;48 links[i].platforms = &dlc[1];49 50 links[i].num_cpus = 1;51 links[i].num_codecs = 1;52 links[i].num_platforms = 1;53 54 links[i].id = i;55 links[i].no_pcm = 1;56 links[i].cpus->dai_name = drv[i].name;57 links[i].platforms->name = dev_name(dev->parent);58 if (drv[i].playback.channels_min)59 links[i].dpcm_playback = 1;60 if (drv[i].capture.channels_min)61 links[i].dpcm_capture = 1;62 63 links[i].be_hw_params_fixup = sof_pcm_dai_link_fixup;64 }65 66 card->dai_link = links;67 card->num_links = link_num;68 69 return 0;70}71 72static int sof_nocodec_setup(struct device *dev,73 u32 num_dai_drivers,74 struct snd_soc_dai_driver *dai_drivers)75{76 struct snd_soc_dai_link *links;77 78 /* create dummy BE dai_links */79 links = devm_kcalloc(dev, num_dai_drivers, sizeof(struct snd_soc_dai_link), GFP_KERNEL);80 if (!links)81 return -ENOMEM;82 83 return sof_nocodec_bes_setup(dev, dai_drivers, links, num_dai_drivers, &sof_nocodec_card);84}85 86static int sof_nocodec_probe(struct platform_device *pdev)87{88 struct snd_soc_card *card = &sof_nocodec_card;89 struct snd_soc_acpi_mach *mach;90 int ret;91 92 card->dev = &pdev->dev;93 card->topology_shortname_created = true;94 mach = pdev->dev.platform_data;95 96 ret = sof_nocodec_setup(card->dev, mach->mach_params.num_dai_drivers,97 mach->mach_params.dai_drivers);98 if (ret < 0)99 return ret;100 101 return devm_snd_soc_register_card(&pdev->dev, card);102}103 104static struct platform_driver sof_nocodec_audio = {105 .probe = sof_nocodec_probe,106 .driver = {107 .name = "sof-nocodec",108 .pm = &snd_soc_pm_ops,109 },110};111module_platform_driver(sof_nocodec_audio)112 113MODULE_LICENSE("Dual BSD/GPL");114MODULE_DESCRIPTION("ASoC sof nocodec");115MODULE_AUTHOR("Liam Girdwood");116MODULE_ALIAS("platform:sof-nocodec");117