1/*
2 * Copyright (C) 2014 Samsung Electronics Co., Ltd.
3 *
4 * This program is free software; you can redistribute  it and/or modify it
5 * under  the terms of  the GNU General  Public License as published by the
6 * Free Software Foundation;  either version 2 of the  License, or (at your
7 * option) any later version.
8 */
9
10#include <linux/of.h>
11#include <linux/module.h>
12#include <sound/soc.h>
13#include <sound/pcm_params.h>
14#include "i2s.h"
15
16struct odroidx2_drv_data {
17	const struct snd_soc_dapm_widget *dapm_widgets;
18	unsigned int num_dapm_widgets;
19};
20
21/* The I2S CDCLK output clock frequency for the MAX98090 codec */
22#define MAX98090_MCLK 19200000
23
24static struct snd_soc_dai_link odroidx2_dai[];
25
26static int odroidx2_late_probe(struct snd_soc_card *card)
27{
28	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
29	struct snd_soc_dai *cpu_dai = card->rtd[0].cpu_dai;
30	int ret;
31
32	ret = snd_soc_dai_set_sysclk(codec_dai, 0, MAX98090_MCLK,
33						SND_SOC_CLOCK_IN);
34
35	if (ret < 0 || of_find_property(odroidx2_dai[0].codec_of_node,
36					"clocks", NULL))
37		return ret;
38
39	/* Set the cpu DAI configuration in order to use CDCLK */
40	return snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
41					0, SND_SOC_CLOCK_OUT);
42}
43
44static const struct snd_soc_dapm_widget odroidx2_dapm_widgets[] = {
45	SND_SOC_DAPM_HP("Headphone Jack", NULL),
46	SND_SOC_DAPM_MIC("Mic Jack", NULL),
47	SND_SOC_DAPM_MIC("DMIC", NULL),
48};
49
50static const struct snd_soc_dapm_widget odroidu3_dapm_widgets[] = {
51	SND_SOC_DAPM_HP("Headphone Jack", NULL),
52	SND_SOC_DAPM_SPK("Speakers", NULL),
53};
54
55static struct snd_soc_dai_link odroidx2_dai[] = {
56	{
57		.name		= "MAX98090",
58		.stream_name	= "MAX98090 PCM",
59		.codec_dai_name	= "HiFi",
60		.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
61				  SND_SOC_DAIFMT_CBM_CFM,
62	}
63};
64
65static struct snd_soc_card odroidx2 = {
66	.owner			= THIS_MODULE,
67	.dai_link		= odroidx2_dai,
68	.num_links		= ARRAY_SIZE(odroidx2_dai),
69	.fully_routed		= true,
70	.late_probe		= odroidx2_late_probe,
71};
72
73static const struct odroidx2_drv_data odroidx2_drvdata = {
74	.dapm_widgets		= odroidx2_dapm_widgets,
75	.num_dapm_widgets	= ARRAY_SIZE(odroidx2_dapm_widgets),
76};
77
78static const struct odroidx2_drv_data odroidu3_drvdata = {
79	.dapm_widgets		= odroidu3_dapm_widgets,
80	.num_dapm_widgets	= ARRAY_SIZE(odroidu3_dapm_widgets),
81};
82
83static const struct of_device_id odroidx2_audio_of_match[] = {
84	{
85		.compatible	= "samsung,odroidx2-audio",
86		.data		= &odroidx2_drvdata,
87	}, {
88		.compatible	= "samsung,odroidu3-audio",
89		.data		= &odroidu3_drvdata,
90	},
91	{ },
92};
93MODULE_DEVICE_TABLE(of, odroidx2_audio_of_match);
94
95static int odroidx2_audio_probe(struct platform_device *pdev)
96{
97	struct device_node *snd_node = pdev->dev.of_node;
98	struct snd_soc_card *card = &odroidx2;
99	struct device_node *i2s_node, *codec_node;
100	struct odroidx2_drv_data *dd;
101	const struct of_device_id *of_id;
102	int ret;
103
104	of_id = of_match_node(odroidx2_audio_of_match, snd_node);
105	dd = (struct odroidx2_drv_data *)of_id->data;
106
107	card->num_dapm_widgets = dd->num_dapm_widgets;
108	card->dapm_widgets = dd->dapm_widgets;
109
110	card->dev = &pdev->dev;
111
112	ret = snd_soc_of_parse_card_name(card, "samsung,model");
113	if (ret < 0)
114		return ret;
115
116	ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
117	if (ret < 0)
118		return ret;
119
120	codec_node = of_parse_phandle(snd_node, "samsung,audio-codec", 0);
121	if (!codec_node) {
122		dev_err(&pdev->dev,
123			"Failed parsing samsung,i2s-codec property\n");
124		return -EINVAL;
125	}
126
127	i2s_node = of_parse_phandle(snd_node, "samsung,i2s-controller", 0);
128	if (!i2s_node) {
129		dev_err(&pdev->dev,
130			"Failed parsing samsung,i2s-controller property\n");
131		ret = -EINVAL;
132		goto err_put_codec_n;
133	}
134
135	odroidx2_dai[0].codec_of_node = codec_node;
136	odroidx2_dai[0].cpu_of_node = i2s_node;
137	odroidx2_dai[0].platform_of_node = i2s_node;
138
139	ret = snd_soc_register_card(card);
140	if (ret) {
141		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
142			ret);
143		goto err_put_i2s_n;
144	}
145	return 0;
146
147err_put_i2s_n:
148	of_node_put(i2s_node);
149err_put_codec_n:
150	of_node_put(codec_node);
151	return ret;
152}
153
154static int odroidx2_audio_remove(struct platform_device *pdev)
155{
156	struct snd_soc_card *card = platform_get_drvdata(pdev);
157
158	snd_soc_unregister_card(card);
159
160	of_node_put(odroidx2_dai[0].cpu_of_node);
161	of_node_put(odroidx2_dai[0].codec_of_node);
162
163	return 0;
164}
165
166static struct platform_driver odroidx2_audio_driver = {
167	.driver = {
168		.name		= "odroidx2-audio",
169		.of_match_table	= odroidx2_audio_of_match,
170		.pm		= &snd_soc_pm_ops,
171	},
172	.probe	= odroidx2_audio_probe,
173	.remove	= odroidx2_audio_remove,
174};
175module_platform_driver(odroidx2_audio_driver);
176
177MODULE_AUTHOR("Chen Zhen <zhen1.chen@samsung.com>");
178MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
179MODULE_DESCRIPTION("ALSA SoC Odroid X2/U3 Audio Support");
180MODULE_LICENSE("GPL v2");
181