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 = substream->private_data;
22 	struct snd_soc_dai *codec_dai = rtd->codec_dai;
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 static struct snd_soc_dai_link a370db_dai[] = {
58 {
59 	.name = "CS42L51",
60 	.stream_name = "analog",
61 	.cpu_dai_name = "i2s",
62 	.codec_dai_name = "cs42l51-hifi",
63 	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
64 	.ops = &a370db_ops,
65 },
66 {
67 	.name = "S/PDIF out",
68 	.stream_name = "spdif-out",
69 	.cpu_dai_name = "spdif",
70 	.codec_dai_name = "dit-hifi",
71 	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
72 },
73 {
74 	.name = "S/PDIF in",
75 	.stream_name = "spdif-in",
76 	.cpu_dai_name = "spdif",
77 	.codec_dai_name = "dir-hifi",
78 	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
79 },
80 };
81 
82 static struct snd_soc_card a370db = {
83 	.name = "a370db",
84 	.owner = THIS_MODULE,
85 	.dai_link = a370db_dai,
86 	.num_links = ARRAY_SIZE(a370db_dai),
87 	.dapm_widgets = a370db_dapm_widgets,
88 	.num_dapm_widgets = ARRAY_SIZE(a370db_dapm_widgets),
89 	.dapm_routes = a370db_route,
90 	.num_dapm_routes = ARRAY_SIZE(a370db_route),
91 };
92 
93 static int a370db_probe(struct platform_device *pdev)
94 {
95 	struct snd_soc_card *card = &a370db;
96 
97 	card->dev = &pdev->dev;
98 
99 	a370db_dai[0].cpu_of_node =
100 		of_parse_phandle(pdev->dev.of_node,
101 				 "marvell,audio-controller", 0);
102 	a370db_dai[0].platform_of_node = a370db_dai[0].cpu_of_node;
103 
104 	a370db_dai[0].codec_of_node =
105 		of_parse_phandle(pdev->dev.of_node,
106 				 "marvell,audio-codec", 0);
107 
108 	a370db_dai[1].cpu_of_node = a370db_dai[0].cpu_of_node;
109 	a370db_dai[1].platform_of_node = a370db_dai[0].cpu_of_node;
110 
111 	a370db_dai[1].codec_of_node =
112 		of_parse_phandle(pdev->dev.of_node,
113 				 "marvell,audio-codec", 1);
114 
115 	a370db_dai[2].cpu_of_node = a370db_dai[0].cpu_of_node;
116 	a370db_dai[2].platform_of_node = a370db_dai[0].cpu_of_node;
117 
118 	a370db_dai[2].codec_of_node =
119 		of_parse_phandle(pdev->dev.of_node,
120 				 "marvell,audio-codec", 2);
121 
122 	return devm_snd_soc_register_card(card->dev, card);
123 }
124 
125 static const struct of_device_id a370db_dt_ids[] = {
126 	{ .compatible = "marvell,a370db-audio" },
127 	{ },
128 };
129 MODULE_DEVICE_TABLE(of, a370db_dt_ids);
130 
131 static struct platform_driver a370db_driver = {
132 	.driver		= {
133 		.name	= "a370db-audio",
134 		.of_match_table = of_match_ptr(a370db_dt_ids),
135 	},
136 	.probe		= a370db_probe,
137 };
138 
139 module_platform_driver(a370db_driver);
140 
141 MODULE_AUTHOR("Thomas Petazzoni <thomas.petazzoni@free-electrons.com>");
142 MODULE_DESCRIPTION("ALSA SoC a370db audio client");
143 MODULE_LICENSE("GPL");
144 MODULE_ALIAS("platform:a370db-audio");
145