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
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
16 static 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
22 static 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
72 static 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
86 static 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
104 static 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 };
111 module_platform_driver(sof_nocodec_audio)
112
113 MODULE_LICENSE("Dual BSD/GPL");
114 MODULE_DESCRIPTION("ASoC sof nocodec");
115 MODULE_AUTHOR("Liam Girdwood");
116 MODULE_ALIAS("platform:sof-nocodec");
117
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