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 | |
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, n: 2, size: sizeof(*dlc), GFP_KERNEL); |
36 | if (!dlc) |
37 | return -ENOMEM; |
38 | |
39 | links[i].name = devm_kasprintf(dev, GFP_KERNEL, |
40 | fmt: "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: 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, n: num_dai_drivers, size: sizeof(struct snd_soc_dai_link), GFP_KERNEL); |
80 | if (!links) |
81 | return -ENOMEM; |
82 | |
83 | return sof_nocodec_bes_setup(dev, drv: dai_drivers, links, link_num: num_dai_drivers, card: &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(dev: card->dev, num_dai_drivers: mach->mach_params.num_dai_drivers, |
97 | dai_drivers: mach->mach_params.dai_drivers); |
98 | if (ret < 0) |
99 | return ret; |
100 | |
101 | return devm_snd_soc_register_card(dev: &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_DESCRIPTION("ASoC sof nocodec" ); |
114 | MODULE_AUTHOR("Liam Girdwood" ); |
115 | MODULE_LICENSE("Dual BSD/GPL" ); |
116 | MODULE_ALIAS("platform:sof-nocodec" ); |
117 | |