LXR linux/sound/soc/sof/nocodec.c

   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
  15static struct snd_soc_card sof_nocodec_card = {
  16        .name = "nocodec", /* the sof- prefix is added by the core */
  17};
  18
  19static 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        struct snd_soc_dai_link_component *dlc;
  25        int i;
  26
  27        if (!ops || !links || !card)
  28                return -EINVAL;
  29
  30        /* set up BE dai_links */
  31        for (i = 0; i < link_num; i++) {
  32                dlc = devm_kzalloc(dev, 3 * sizeof(*dlc), GFP_KERNEL);
  33                if (!dlc)
  34                        return -ENOMEM;
  35
  36                links[i].name = devm_kasprintf(dev, GFP_KERNEL,
  37                                               "NoCodec-%d", i);
  38                if (!links[i].name)
  39                        return -ENOMEM;
  40
  41                links[i].cpus = &dlc[0];
  42                links[i].codecs = &dlc[1];
  43                links[i].platforms = &dlc[2];
  44
  45                links[i].num_cpus = 1;
  46                links[i].num_codecs = 1;
  47                links[i].num_platforms = 1;
  48
  49                links[i].id = i;
  50                links[i].no_pcm = 1;
  51                links[i].cpus->dai_name = ops->drv[i].name;
  52                links[i].platforms->name = dev_name(dev);
  53                links[i].codecs->dai_name = "snd-soc-dummy-dai";
  54                links[i].codecs->name = "snd-soc-dummy";
  55                links[i].dpcm_playback = 1;
  56                links[i].dpcm_capture = 1;
  57        }
  58
  59        card->dai_link = links;
  60        card->num_links = link_num;
  61
  62        return 0;
  63}
  64
  65int sof_nocodec_setup(struct device *dev,
  66                      struct snd_sof_pdata *sof_pdata,
  67                      struct snd_soc_acpi_mach *mach,
  68                      const struct sof_dev_desc *desc,
  69                      const struct snd_sof_dsp_ops *ops)
  70{
  71        struct snd_soc_dai_link *links;
  72        int ret;
  73
  74        if (!mach)
  75                return -EINVAL;
  76
  77        sof_pdata->drv_name = "sof-nocodec";
  78
  79        mach->drv_name = "sof-nocodec";
  80        sof_pdata->fw_filename = desc->nocodec_fw_filename;
  81        sof_pdata->tplg_filename = desc->nocodec_tplg_filename;
  82
  83        /* create dummy BE dai_links */
  84        links = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link) *
  85                             ops->num_drv, GFP_KERNEL);
  86        if (!links)
  87                return -ENOMEM;
  88
  89        ret = sof_nocodec_bes_setup(dev, ops, links, ops->num_drv,
  90                                    &sof_nocodec_card);
  91        return ret;
  92}
  93EXPORT_SYMBOL(sof_nocodec_setup);
  94
  95static int sof_nocodec_probe(struct platform_device *pdev)
  96{
  97        struct snd_soc_card *card = &sof_nocodec_card;
  98
  99        card->dev = &pdev->dev;
 100
 101        return devm_snd_soc_register_card(&pdev->dev, card);
 102}
 103
 104static int sof_nocodec_remove(struct platform_device *pdev)
 105{
 106        return 0;
 107}
 108
 109static struct platform_driver sof_nocodec_audio = {
 110        .probe = sof_nocodec_probe,
 111        .remove = sof_nocodec_remove,
 112        .driver = {
 113                .name = "sof-nocodec",
 114                .pm = &snd_soc_pm_ops,
 115        },
 116};
 117module_platform_driver(sof_nocodec_audio)
 118
 119MODULE_DESCRIPTION("ASoC sof nocodec");
 120MODULE_AUTHOR("Liam Girdwood");
 121MODULE_LICENSE("Dual BSD/GPL");
 122MODULE_ALIAS("platform:sof-nocodec");
 123