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-audio.h"
14#include "sof-priv.h"
15
16static struct snd_soc_card sof_nocodec_card = {
17	.name = "nocodec", /* the sof- prefix is added by the core */
18	.topology_shortname = "sof-nocodec",
19	.owner = THIS_MODULE
20};
21
22static int sof_nocodec_bes_setup(struct device *dev,
23				 struct snd_soc_dai_driver *drv,
24				 struct snd_soc_dai_link *links,
25				 int link_num, struct snd_soc_card *card)
26{
27	struct snd_soc_dai_link_component *dlc;
28	int i;
29
30	if (!drv || !links || !card)
31		return -EINVAL;
32
33	/* set up BE dai_links */
34	for (i = 0; i < link_num; i++) {
35		dlc = devm_kcalloc(dev, 2, sizeof(*dlc), GFP_KERNEL);
36		if (!dlc)
37			return -ENOMEM;
38
39		links[i].name = devm_kasprintf(dev, GFP_KERNEL,
40					       "NoCodec-%d", i);
41		if (!links[i].name)
42			return -ENOMEM;
43
44		links[i].stream_name = links[i].name;
45
46		links[i].cpus = &dlc[0];
47		links[i].codecs = &snd_soc_dummy_dlc;
48		links[i].platforms = &dlc[1];
49
50		links[i].num_cpus = 1;
51		links[i].num_codecs = 1;
52		links[i].num_platforms = 1;
53
54		links[i].id = i;
55		links[i].no_pcm = 1;
56		links[i].cpus->dai_name = drv[i].name;
57		links[i].platforms->name = dev_name(dev->parent);
58		if (drv[i].playback.channels_min)
59			links[i].dpcm_playback = 1;
60		if (drv[i].capture.channels_min)
61			links[i].dpcm_capture = 1;
62
63		links[i].be_hw_params_fixup = sof_pcm_dai_link_fixup;
64	}
65
66	card->dai_link = links;
67	card->num_links = link_num;
68
69	return 0;
70}
71
72static int sof_nocodec_setup(struct device *dev,
73			     u32 num_dai_drivers,
74			     struct snd_soc_dai_driver *dai_drivers)
75{
76	struct snd_soc_dai_link *links;
77
78	/* create dummy BE dai_links */
79	links = devm_kcalloc(dev, num_dai_drivers, sizeof(struct snd_soc_dai_link), GFP_KERNEL);
80	if (!links)
81		return -ENOMEM;
82
83	return sof_nocodec_bes_setup(dev, dai_drivers, links, num_dai_drivers, &sof_nocodec_card);
84}
85
86static int sof_nocodec_probe(struct platform_device *pdev)
87{
88	struct snd_soc_card *card = &sof_nocodec_card;
89	struct snd_soc_acpi_mach *mach;
90	int ret;
91
92	card->dev = &pdev->dev;
93	card->topology_shortname_created = true;
94	mach = pdev->dev.platform_data;
95
96	ret = sof_nocodec_setup(card->dev, mach->mach_params.num_dai_drivers,
97				mach->mach_params.dai_drivers);
98	if (ret < 0)
99		return ret;
100
101	return devm_snd_soc_register_card(&pdev->dev, card);
102}
103
104static struct platform_driver sof_nocodec_audio = {
105	.probe = sof_nocodec_probe,
106	.driver = {
107		.name = "sof-nocodec",
108		.pm = &snd_soc_pm_ops,
109	},
110};
111module_platform_driver(sof_nocodec_audio)
112
113MODULE_DESCRIPTION("ASoC sof nocodec");
114MODULE_AUTHOR("Liam Girdwood");
115MODULE_LICENSE("Dual BSD/GPL");
116MODULE_ALIAS("platform:sof-nocodec");
117