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
18static 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
41static const struct snd_soc_ops a370db_ops = {
42	.hw_params = a370db_hw_params,
43};
44
45static 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
50static 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
57SND_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
62SND_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
67SND_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
72static 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
94static 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
105static 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
137static const struct of_device_id a370db_dt_ids[] __maybe_unused = {
138	{ .compatible = "marvell,a370db-audio" },
139	{ },
140};
141MODULE_DEVICE_TABLE(of, a370db_dt_ids);
142
143static 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
151module_platform_driver(a370db_driver);
152
153MODULE_AUTHOR("Thomas Petazzoni <thomas.petazzoni@free-electrons.com>");
154MODULE_DESCRIPTION("ALSA SoC a370db audio client");
155MODULE_LICENSE("GPL");
156MODULE_ALIAS("platform:a370db-audio");
157