1 // SPDX-License-Identifier: (GPL-2.0 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 }; 18 19 static int sof_nocodec_bes_setup(struct device *dev, 20 const struct snd_sof_dsp_ops *ops, 21 struct snd_soc_dai_link *links, 22 int link_num, struct snd_soc_card *card) 23 { 24 int i; 25 26 if (!ops || !links || !card) 27 return -EINVAL; 28 29 /* set up BE dai_links */ 30 for (i = 0; i < link_num; i++) { 31 links[i].name = devm_kasprintf(dev, GFP_KERNEL, 32 "NoCodec-%d", i); 33 if (!links[i].name) 34 return -ENOMEM; 35 36 links[i].id = i; 37 links[i].no_pcm = 1; 38 links[i].cpu_dai_name = ops->drv[i].name; 39 links[i].platform_name = dev_name(dev); 40 links[i].codec_dai_name = "snd-soc-dummy-dai"; 41 links[i].codec_name = "snd-soc-dummy"; 42 links[i].dpcm_playback = 1; 43 links[i].dpcm_capture = 1; 44 } 45 46 card->dai_link = links; 47 card->num_links = link_num; 48 49 return 0; 50 } 51 52 int sof_nocodec_setup(struct device *dev, 53 struct snd_sof_pdata *sof_pdata, 54 struct snd_soc_acpi_mach *mach, 55 const struct sof_dev_desc *desc, 56 const struct snd_sof_dsp_ops *ops) 57 { 58 struct snd_soc_dai_link *links; 59 int ret; 60 61 if (!mach) 62 return -EINVAL; 63 64 sof_pdata->drv_name = "sof-nocodec"; 65 66 mach->drv_name = "sof-nocodec"; 67 sof_pdata->fw_filename = desc->nocodec_fw_filename; 68 sof_pdata->tplg_filename = desc->nocodec_tplg_filename; 69 70 /* create dummy BE dai_links */ 71 links = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link) * 72 ops->num_drv, GFP_KERNEL); 73 if (!links) 74 return -ENOMEM; 75 76 ret = sof_nocodec_bes_setup(dev, ops, links, ops->num_drv, 77 &sof_nocodec_card); 78 return ret; 79 } 80 EXPORT_SYMBOL(sof_nocodec_setup); 81 82 static int sof_nocodec_probe(struct platform_device *pdev) 83 { 84 struct snd_soc_card *card = &sof_nocodec_card; 85 86 card->dev = &pdev->dev; 87 88 return devm_snd_soc_register_card(&pdev->dev, card); 89 } 90 91 static int sof_nocodec_remove(struct platform_device *pdev) 92 { 93 return 0; 94 } 95 96 static struct platform_driver sof_nocodec_audio = { 97 .probe = sof_nocodec_probe, 98 .remove = sof_nocodec_remove, 99 .driver = { 100 .name = "sof-nocodec", 101 .pm = &snd_soc_pm_ops, 102 }, 103 }; 104 module_platform_driver(sof_nocodec_audio) 105 106 MODULE_DESCRIPTION("ASoC sof nocodec"); 107 MODULE_AUTHOR("Liam Girdwood"); 108 MODULE_LICENSE("Dual BSD/GPL"); 109 MODULE_ALIAS("platform:sof-nocodec"); 110