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 = asoc_substream_to_rtd(substream);
 22	struct snd_soc_dai *codec_dai = asoc_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");