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f2390880 KM |
1 | /* |
2 | * ASoC simple sound card support | |
3 | * | |
4 | * Copyright (C) 2012 Renesas Solutions Corp. | |
5 | * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include <linux/platform_device.h> | |
13 | #include <linux/module.h> | |
14 | #include <sound/simple_card.h> | |
15 | ||
16 | #define asoc_simple_get_card_info(p) \ | |
17 | container_of(p->dai_link, struct asoc_simple_card_info, snd_link) | |
18 | ||
a4a2992c KM |
19 | static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai, |
20 | struct asoc_simple_dai *set, | |
21 | unsigned int daifmt) | |
22 | { | |
23 | int ret = 0; | |
24 | ||
25 | daifmt |= set->fmt; | |
26 | ||
27 | if (!ret && daifmt) | |
28 | ret = snd_soc_dai_set_fmt(dai, daifmt); | |
29 | ||
30 | if (!ret && set->sysclk) | |
31 | ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0); | |
32 | ||
33 | return ret; | |
34 | } | |
35 | ||
f2390880 KM |
36 | static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd) |
37 | { | |
a4a2992c | 38 | struct asoc_simple_card_info *info = asoc_simple_get_card_info(rtd); |
f2390880 KM |
39 | struct snd_soc_dai *codec = rtd->codec_dai; |
40 | struct snd_soc_dai *cpu = rtd->cpu_dai; | |
a4a2992c | 41 | unsigned int daifmt = info->daifmt; |
f2390880 KM |
42 | int ret; |
43 | ||
a4a2992c KM |
44 | ret = __asoc_simple_card_dai_init(codec, &info->codec_dai, daifmt); |
45 | if (ret < 0) | |
46 | return ret; | |
f2390880 | 47 | |
a4a2992c KM |
48 | ret = __asoc_simple_card_dai_init(cpu, &info->cpu_dai, daifmt); |
49 | if (ret < 0) | |
50 | return ret; | |
f2390880 KM |
51 | |
52 | return 0; | |
53 | } | |
54 | ||
55 | static int asoc_simple_card_probe(struct platform_device *pdev) | |
56 | { | |
57 | struct asoc_simple_card_info *cinfo = pdev->dev.platform_data; | |
f89983ef | 58 | struct device *dev = &pdev->dev; |
f2390880 KM |
59 | |
60 | if (!cinfo) { | |
f89983ef | 61 | dev_err(dev, "no info for asoc-simple-card\n"); |
f2390880 KM |
62 | return -EINVAL; |
63 | } | |
64 | ||
65 | if (!cinfo->name || | |
66 | !cinfo->card || | |
f2390880 KM |
67 | !cinfo->codec || |
68 | !cinfo->platform || | |
a4a2992c KM |
69 | !cinfo->cpu_dai.name || |
70 | !cinfo->codec_dai.name) { | |
f89983ef | 71 | dev_err(dev, "insufficient asoc_simple_card_info settings\n"); |
f2390880 KM |
72 | return -EINVAL; |
73 | } | |
74 | ||
75 | /* | |
76 | * init snd_soc_dai_link | |
77 | */ | |
78 | cinfo->snd_link.name = cinfo->name; | |
79 | cinfo->snd_link.stream_name = cinfo->name; | |
a4a2992c | 80 | cinfo->snd_link.cpu_dai_name = cinfo->cpu_dai.name; |
f2390880 KM |
81 | cinfo->snd_link.platform_name = cinfo->platform; |
82 | cinfo->snd_link.codec_name = cinfo->codec; | |
a4a2992c KM |
83 | cinfo->snd_link.codec_dai_name = cinfo->codec_dai.name; |
84 | cinfo->snd_link.init = asoc_simple_card_dai_init; | |
f2390880 KM |
85 | |
86 | /* | |
87 | * init snd_soc_card | |
88 | */ | |
89 | cinfo->snd_card.name = cinfo->card; | |
90 | cinfo->snd_card.owner = THIS_MODULE; | |
91 | cinfo->snd_card.dai_link = &cinfo->snd_link; | |
92 | cinfo->snd_card.num_links = 1; | |
93 | cinfo->snd_card.dev = &pdev->dev; | |
94 | ||
95 | return snd_soc_register_card(&cinfo->snd_card); | |
96 | } | |
97 | ||
98 | static int asoc_simple_card_remove(struct platform_device *pdev) | |
99 | { | |
100 | struct asoc_simple_card_info *cinfo = pdev->dev.platform_data; | |
101 | ||
102 | return snd_soc_unregister_card(&cinfo->snd_card); | |
103 | } | |
104 | ||
105 | static struct platform_driver asoc_simple_card = { | |
106 | .driver = { | |
107 | .name = "asoc-simple-card", | |
108 | }, | |
109 | .probe = asoc_simple_card_probe, | |
110 | .remove = asoc_simple_card_remove, | |
111 | }; | |
112 | ||
113 | module_platform_driver(asoc_simple_card); | |
114 | ||
115 | MODULE_LICENSE("GPL"); | |
116 | MODULE_DESCRIPTION("ASoC Simple Sound Card"); | |
117 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); |