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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 | // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) // // This file is provided under a dual BSD/GPLv2 license. When using or // redistributing this file, you may do so under either license. // // Copyright(c) 2018 Intel Corporation. All rights reserved. // // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com> // #include <linux/module.h> #include <sound/sof.h> #include "sof-audio.h" #include "sof-priv.h" static struct snd_soc_card sof_nocodec_card = { .name = "nocodec", /* the sof- prefix is added by the core */ .topology_shortname = "sof-nocodec", .owner = THIS_MODULE }; static int sof_nocodec_bes_setup(struct device *dev, struct snd_soc_dai_driver *drv, struct snd_soc_dai_link *links, int link_num, struct snd_soc_card *card) { struct snd_soc_dai_link_component *dlc; int i; if (!drv || !links || !card) return -EINVAL; /* set up BE dai_links */ for (i = 0; i < link_num; i++) { dlc = devm_kcalloc(dev, 3, sizeof(*dlc), GFP_KERNEL); if (!dlc) return -ENOMEM; links[i].name = devm_kasprintf(dev, GFP_KERNEL, "NoCodec-%d", i); if (!links[i].name) return -ENOMEM; links[i].stream_name = links[i].name; links[i].cpus = &dlc[0]; links[i].codecs = &dlc[1]; links[i].platforms = &dlc[2]; links[i].num_cpus = 1; links[i].num_codecs = 1; links[i].num_platforms = 1; links[i].id = i; links[i].no_pcm = 1; links[i].cpus->dai_name = drv[i].name; links[i].platforms->name = dev_name(dev->parent); links[i].codecs->dai_name = "snd-soc-dummy-dai"; links[i].codecs->name = "snd-soc-dummy"; if (drv[i].playback.channels_min) links[i].dpcm_playback = 1; if (drv[i].capture.channels_min) links[i].dpcm_capture = 1; links[i].be_hw_params_fixup = sof_pcm_dai_link_fixup; } card->dai_link = links; card->num_links = link_num; return 0; } static int sof_nocodec_setup(struct device *dev, u32 num_dai_drivers, struct snd_soc_dai_driver *dai_drivers) { struct snd_soc_dai_link *links; /* create dummy BE dai_links */ links = devm_kcalloc(dev, num_dai_drivers, sizeof(struct snd_soc_dai_link), GFP_KERNEL); if (!links) return -ENOMEM; return sof_nocodec_bes_setup(dev, dai_drivers, links, num_dai_drivers, &sof_nocodec_card); } static int sof_nocodec_probe(struct platform_device *pdev) { struct snd_soc_card *card = &sof_nocodec_card; struct snd_soc_acpi_mach *mach; int ret; card->dev = &pdev->dev; card->topology_shortname_created = true; mach = pdev->dev.platform_data; ret = sof_nocodec_setup(card->dev, mach->mach_params.num_dai_drivers, mach->mach_params.dai_drivers); if (ret < 0) return ret; return devm_snd_soc_register_card(&pdev->dev, card); } static int sof_nocodec_remove(struct platform_device *pdev) { return 0; } static struct platform_driver sof_nocodec_audio = { .probe = sof_nocodec_probe, .remove = sof_nocodec_remove, .driver = { .name = "sof-nocodec", .pm = &snd_soc_pm_ops, }, }; module_platform_driver(sof_nocodec_audio) MODULE_DESCRIPTION("ASoC sof nocodec"); MODULE_AUTHOR("Liam Girdwood"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_ALIAS("platform:sof-nocodec"); |