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