1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2014 Marvell
4 *
5 * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
6 */
7
8 #include <linux/module.h>
9 #include <linux/moduleparam.h>
10 #include <linux/interrupt.h>
11 #include <linux/platform_device.h>
12 #include <linux/slab.h>
13 #include <sound/soc.h>
14 #include <linux/of.h>
15 #include <linux/platform_data/asoc-kirkwood.h>
16 #include "../codecs/cs42l51.h"
17
18 static int a370db_hw_params(struct snd_pcm_substream *substream,
19 struct snd_pcm_hw_params *params)
20 {
21 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
22 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
23 unsigned int freq;
24
25 switch (params_rate(params)) {
26 default:
27 case 44100:
28 freq = 11289600;
29 break;
30 case 48000:
31 freq = 12288000;
32 break;
33 case 96000:
34 freq = 24576000;
35 break;
36 }
37
38 return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN);
39 }
40
41 static const struct snd_soc_ops a370db_ops = {
42 .hw_params = a370db_hw_params,
43 };
44
45 static const struct snd_soc_dapm_widget a370db_dapm_widgets[] = {
46 SND_SOC_DAPM_HP("Out Jack", NULL),
47 SND_SOC_DAPM_LINE("In Jack", NULL),
48 };
49
50 static const struct snd_soc_dapm_route a370db_route[] = {
51 { "Out Jack", NULL, "HPL" },
52 { "Out Jack", NULL, "HPR" },
53 { "AIN1L", NULL, "In Jack" },
54 { "AIN1L", NULL, "In Jack" },
55 };
56
57 SND_SOC_DAILINK_DEFS(analog,
58 DAILINK_COMP_ARRAY(COMP_CPU("i2s")),
59 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42l51-hifi")),
60 DAILINK_COMP_ARRAY(COMP_EMPTY()));
61
62 SND_SOC_DAILINK_DEFS(spdif_out,
63 DAILINK_COMP_ARRAY(COMP_CPU("spdif")),
64 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "dit-hifi")),
65 DAILINK_COMP_ARRAY(COMP_EMPTY()));
66
67 SND_SOC_DAILINK_DEFS(spdif_in,
68 DAILINK_COMP_ARRAY(COMP_CPU("spdif")),
69 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "dir-hifi")),
70 DAILINK_COMP_ARRAY(COMP_EMPTY()));
71
72 static struct snd_soc_dai_link a370db_dai[] = {
73 {
74 .name = "CS42L51",
75 .stream_name = "analog",
76 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
77 .ops = &a370db_ops,
78 SND_SOC_DAILINK_REG(analog),
79 },
80 {
81 .name = "S/PDIF out",
82 .stream_name = "spdif-out",
83 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
84 SND_SOC_DAILINK_REG(spdif_out),
85 },
86 {
87 .name = "S/PDIF in",
88 .stream_name = "spdif-in",
89 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
90 SND_SOC_DAILINK_REG(spdif_in),
91 },
92 };
93
94 static struct snd_soc_card a370db = {
95 .name = "a370db",
96 .owner = THIS_MODULE,
97 .dai_link = a370db_dai,
98 .num_links = ARRAY_SIZE(a370db_dai),
99 .dapm_widgets = a370db_dapm_widgets,
100 .num_dapm_widgets = ARRAY_SIZE(a370db_dapm_widgets),
101 .dapm_routes = a370db_route,
102 .num_dapm_routes = ARRAY_SIZE(a370db_route),
103 };
104
105 static int a370db_probe(struct platform_device *pdev)
106 {
107 struct snd_soc_card *card = &a370db;
108
109 card->dev = &pdev->dev;
110
111 a370db_dai[0].cpus->of_node =
112 of_parse_phandle(pdev->dev.of_node,
113 "marvell,audio-controller", 0);
114 a370db_dai[0].platforms->of_node = a370db_dai[0].cpus->of_node;
115
116 a370db_dai[0].codecs->of_node =
117 of_parse_phandle(pdev->dev.of_node,
118 "marvell,audio-codec", 0);
119
120 a370db_dai[1].cpus->of_node = a370db_dai[0].cpus->of_node;
121 a370db_dai[1].platforms->of_node = a370db_dai[0].cpus->of_node;
122
123 a370db_dai[1].codecs->of_node =
124 of_parse_phandle(pdev->dev.of_node,
125 "marvell,audio-codec", 1);
126
127 a370db_dai[2].cpus->of_node = a370db_dai[0].cpus->of_node;
128 a370db_dai[2].platforms->of_node = a370db_dai[0].cpus->of_node;
129
130 a370db_dai[2].codecs->of_node =
131 of_parse_phandle(pdev->dev.of_node,
132 "marvell,audio-codec", 2);
133
134 return devm_snd_soc_register_card(card->dev, card);
135 }
136
137 static const struct of_device_id a370db_dt_ids[] __maybe_unused = {
138 { .compatible = "marvell,a370db-audio" },
139 { },
140 };
141 MODULE_DEVICE_TABLE(of, a370db_dt_ids);
142
143 static struct platform_driver a370db_driver = {
144 .driver = {
145 .name = "a370db-audio",
146 .of_match_table = of_match_ptr(a370db_dt_ids),
147 },
148 .probe = a370db_probe,
149 };
150
151 module_platform_driver(a370db_driver);
152
153 MODULE_AUTHOR("Thomas Petazzoni <thomas.petazzoni@free-electrons.com>");
154 MODULE_DESCRIPTION("ALSA SoC a370db audio client");
155 MODULE_LICENSE("GPL");
156 MODULE_ALIAS("platform:a370db-audio");
157
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