1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * sound/soc/codecs/wm8782.c
4 * simple, strap-pin configured 24bit 2ch ADC
5 *
6 * Copyright: 2011 Raumfeld GmbH
7 * Author: Johannes Stezenbach <js@sig21.net>
8 *
9 * based on ad73311.c
10 * Copyright:	Analog Devices Inc.
11 * Author:	Cliff Cai <cliff.cai@analog.com>
12 */
13
14#include <linux/init.h>
15#include <linux/slab.h>
16#include <linux/module.h>
17#include <linux/kernel.h>
18#include <linux/device.h>
19#include <linux/regulator/consumer.h>
20#include <sound/core.h>
21#include <sound/pcm.h>
22#include <sound/ac97_codec.h>
23#include <sound/initval.h>
24#include <sound/soc.h>
25
26static const struct snd_soc_dapm_widget wm8782_dapm_widgets[] = {
27SND_SOC_DAPM_INPUT("AINL"),
28SND_SOC_DAPM_INPUT("AINR"),
29};
30
31static const struct snd_soc_dapm_route wm8782_dapm_routes[] = {
32	{ "Capture", NULL, "AINL" },
33	{ "Capture", NULL, "AINR" },
34};
35
36static struct snd_soc_dai_driver wm8782_dai = {
37	.name = "wm8782",
38	.capture = {
39		.stream_name = "Capture",
40		.channels_min = 2,
41		.channels_max = 2,
42		/* For configurations with FSAMPEN=0 */
43		.rates = SNDRV_PCM_RATE_8000_48000,
44		.formats = SNDRV_PCM_FMTBIT_S16_LE |
45			   SNDRV_PCM_FMTBIT_S20_3LE |
46			   SNDRV_PCM_FMTBIT_S24_LE,
47	},
48};
49
50/* regulator power supply names */
51static const char *supply_names[] = {
52	"Vdda", /* analog supply, 2.7V - 3.6V */
53	"Vdd",  /* digital supply, 2.7V - 5.5V */
54};
55
56struct wm8782_priv {
57	struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
58};
59
60static int wm8782_soc_probe(struct snd_soc_component *component)
61{
62	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
63	return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
64}
65
66static void wm8782_soc_remove(struct snd_soc_component *component)
67{
68	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
69	regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
70}
71
72#ifdef CONFIG_PM
73static int wm8782_soc_suspend(struct snd_soc_component *component)
74{
75	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
76	regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
77	return 0;
78}
79
80static int wm8782_soc_resume(struct snd_soc_component *component)
81{
82	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
83	return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
84}
85#else
86#define wm8782_soc_suspend      NULL
87#define wm8782_soc_resume       NULL
88#endif /* CONFIG_PM */
89
90static const struct snd_soc_component_driver soc_component_dev_wm8782 = {
91	.probe			= wm8782_soc_probe,
92	.remove			= wm8782_soc_remove,
93	.suspend		= wm8782_soc_suspend,
94	.resume			= wm8782_soc_resume,
95	.dapm_widgets		= wm8782_dapm_widgets,
96	.num_dapm_widgets	= ARRAY_SIZE(wm8782_dapm_widgets),
97	.dapm_routes		= wm8782_dapm_routes,
98	.num_dapm_routes	= ARRAY_SIZE(wm8782_dapm_routes),
99	.idle_bias_on		= 1,
100	.use_pmdown_time	= 1,
101	.endianness		= 1,
102	.non_legacy_dai_naming	= 1,
103};
104
105static int wm8782_probe(struct platform_device *pdev)
106{
107	struct device *dev = &pdev->dev;
108	struct wm8782_priv *priv;
109	int ret, i;
110
111	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
112	if (!priv)
113		return -ENOMEM;
114
115	dev_set_drvdata(dev, priv);
116
117	for (i = 0; i < ARRAY_SIZE(supply_names); i++)
118		priv->supplies[i].supply = supply_names[i];
119
120	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(priv->supplies),
121				      priv->supplies);
122	if (ret < 0)
123		return ret;
124
125	return devm_snd_soc_register_component(&pdev->dev,
126			&soc_component_dev_wm8782, &wm8782_dai, 1);
127}
128
129#ifdef CONFIG_OF
130static const struct of_device_id wm8782_of_match[] = {
131	{ .compatible = "wlf,wm8782", },
132	{ }
133};
134MODULE_DEVICE_TABLE(of, wm8782_of_match);
135#endif
136
137static struct platform_driver wm8782_codec_driver = {
138	.driver = {
139		.name = "wm8782",
140		.of_match_table = of_match_ptr(wm8782_of_match),
141	},
142	.probe = wm8782_probe,
143};
144
145module_platform_driver(wm8782_codec_driver);
146
147MODULE_DESCRIPTION("ASoC WM8782 driver");
148MODULE_AUTHOR("Johannes Stezenbach <js@sig21.net>");
149MODULE_LICENSE("GPL");
150