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-rw-r--r--sound/soc/sof/nocodec.c124
1 files changed, 124 insertions, 0 deletions
diff --git a/sound/soc/sof/nocodec.c b/sound/soc/sof/nocodec.c
new file mode 100644
index 000000000..353780507
--- /dev/null
+++ b/sound/soc/sof/nocodec.c
@@ -0,0 +1,124 @@
+// 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");