diff options
Diffstat (limited to '')
-rw-r--r-- | sound/soc/sof/nocodec.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/sound/soc/sof/nocodec.c b/sound/soc/sof/nocodec.c new file mode 100644 index 000000000..9e922df6a --- /dev/null +++ b/sound/soc/sof/nocodec.c @@ -0,0 +1,111 @@ +// 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-priv.h" + +static struct snd_soc_card sof_nocodec_card = { + .name = "nocodec", /* the sof- prefix is added by the core */ + .owner = THIS_MODULE +}; + +static int sof_nocodec_bes_setup(struct device *dev, + const struct snd_sof_dsp_ops *ops, + struct snd_soc_dai_link *links, + int link_num, struct snd_soc_card *card) +{ + struct snd_soc_dai_link_component *dlc; + int i; + + if (!ops || !links || !card) + return -EINVAL; + + /* set up BE dai_links */ + for (i = 0; i < link_num; i++) { + dlc = devm_kzalloc(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].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 = ops->drv[i].name; + links[i].platforms->name = dev_name(dev); + links[i].codecs->dai_name = "snd-soc-dummy-dai"; + links[i].codecs->name = "snd-soc-dummy"; + if (ops->drv[i].playback.channels_min) + links[i].dpcm_playback = 1; + if (ops->drv[i].capture.channels_min) + links[i].dpcm_capture = 1; + } + + card->dai_link = links; + card->num_links = link_num; + + return 0; +} + +int sof_nocodec_setup(struct device *dev, + const struct snd_sof_dsp_ops *ops) +{ + struct snd_soc_dai_link *links; + + /* create dummy BE dai_links */ + links = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link) * + ops->num_drv, GFP_KERNEL); + if (!links) + return -ENOMEM; + + return sof_nocodec_bes_setup(dev, ops, links, ops->num_drv, + &sof_nocodec_card); +} +EXPORT_SYMBOL(sof_nocodec_setup); + +static int sof_nocodec_probe(struct platform_device *pdev) +{ + struct snd_soc_card *card = &sof_nocodec_card; + + card->dev = &pdev->dev; + + 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"); |