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 or 4 // redistributing this file, you may do so under either license. 5 // 6 // Copyright(c) 2018 Intel Corporation. All rights reserved. 7 // 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-priv.h" 14 15 static struct snd_soc_card sof_nocodec_card = { 16 .name = "nocodec", /* the sof- prefix is added by the core */ 17 .owner = THIS_MODULE 18 }; 19 20 static int sof_nocodec_bes_setup(struct device *dev, 21 const struct snd_sof_dsp_ops *ops, 22 struct snd_soc_dai_link *links, 23 int link_num, struct snd_soc_card *card) 24 { 25 struct snd_soc_dai_link_component *dlc; 26 int i; 27 28 if (!ops || !links || !card) 29 return -EINVAL; 30 31 /* set up BE dai_links */ 32 for (i = 0; i < link_num; i++) { 33 dlc = devm_kzalloc(dev, 3 * sizeof(*dlc), GFP_KERNEL); 34 if (!dlc) 35 return -ENOMEM; 36 37 links[i].name = devm_kasprintf(dev, GFP_KERNEL, 38 "NoCodec-%d", i); 39 if (!links[i].name) 40 return -ENOMEM; 41 42 links[i].cpus = &dlc[0]; 43 links[i].codecs = &dlc[1]; 44 links[i].platforms = &dlc[2]; 45 46 links[i].num_cpus = 1; 47 links[i].num_codecs = 1; 48 links[i].num_platforms = 1; 49 50 links[i].id = i; 51 links[i].no_pcm = 1; 52 links[i].cpus->dai_name = ops->drv[i].name; 53 links[i].platforms->name = dev_name(dev); 54 links[i].codecs->dai_name = "snd-soc-dummy-dai"; 55 links[i].codecs->name = "snd-soc-dummy"; 56 if (ops->drv[i].playback.channels_min) 57 links[i].dpcm_playback = 1; 58 if (ops->drv[i].capture.channels_min) 59 links[i].dpcm_capture = 1; 60 } 61 62 card->dai_link = links; 63 card->num_links = link_num; 64 65 return 0; 66 } 67 68 int sof_nocodec_setup(struct device *dev, 69 const struct snd_sof_dsp_ops *ops) 70 { 71 struct snd_soc_dai_link *links; 72 73 /* create dummy BE dai_links */ 74 links = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link) * 75 ops->num_drv, GFP_KERNEL); 76 if (!links) 77 return -ENOMEM; 78 79 return sof_nocodec_bes_setup(dev, ops, links, ops->num_drv, 80 &sof_nocodec_card); 81 } 82 EXPORT_SYMBOL(sof_nocodec_setup); 83 84 static int sof_nocodec_probe(struct platform_device *pdev) 85 { 86 struct snd_soc_card *card = &sof_nocodec_card; 87 88 card->dev = &pdev->dev; 89 90 return devm_snd_soc_register_card(&pdev->dev, card); 91 } 92 93 static int sof_nocodec_remove(struct platform_device *pdev) 94 { 95 return 0; 96 } 97 98 static struct platform_driver sof_nocodec_audio = { 99 .probe = sof_nocodec_probe, 100 .remove = sof_nocodec_remove, 101 .driver = { 102 .name = "sof-nocodec", 103 .pm = &snd_soc_pm_ops, 104 }, 105 }; 106 module_platform_driver(sof_nocodec_audio) 107 108 MODULE_DESCRIPTION("ASoC sof nocodec"); 109 MODULE_AUTHOR("Liam Girdwood"); 110 MODULE_LICENSE("Dual BSD/GPL"); 111 MODULE_ALIAS("platform:sof-nocodec"); 112