1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * wm8727.c
4 *
5 *  Created on: 15-Oct-2009
6 *      Author: neil.jones@imgtec.com
7 *
8 * Copyright (C) 2009 Imagination Technologies Ltd.
9 */
10
11#include <linux/init.h>
12#include <linux/slab.h>
13#include <linux/module.h>
14#include <linux/kernel.h>
15#include <linux/device.h>
16#include <sound/core.h>
17#include <sound/pcm.h>
18#include <sound/initval.h>
19#include <sound/soc.h>
20
21static const struct snd_soc_dapm_widget wm8727_dapm_widgets[] = {
22SND_SOC_DAPM_OUTPUT("VOUTL"),
23SND_SOC_DAPM_OUTPUT("VOUTR"),
24};
25
26static const struct snd_soc_dapm_route wm8727_dapm_routes[] = {
27	{ "VOUTL", NULL, "Playback" },
28	{ "VOUTR", NULL, "Playback" },
29};
30
31/*
32 * Note this is a simple chip with no configuration interface, sample rate is
33 * determined automatically by examining the Master clock and Bit clock ratios
34 */
35#define WM8727_RATES  (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
36			SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\
37			SNDRV_PCM_RATE_192000)
38
39static struct snd_soc_dai_driver wm8727_dai = {
40	.name = "wm8727-hifi",
41	.playback = {
42		.stream_name = "Playback",
43		.channels_min = 2,
44		.channels_max = 2,
45		.rates = WM8727_RATES,
46		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
47		},
48};
49
50static const struct snd_soc_component_driver soc_component_dev_wm8727 = {
51	.dapm_widgets		= wm8727_dapm_widgets,
52	.num_dapm_widgets	= ARRAY_SIZE(wm8727_dapm_widgets),
53	.dapm_routes		= wm8727_dapm_routes,
54	.num_dapm_routes	= ARRAY_SIZE(wm8727_dapm_routes),
55	.idle_bias_on		= 1,
56	.use_pmdown_time	= 1,
57	.endianness		= 1,
58};
59
60static int wm8727_probe(struct platform_device *pdev)
61{
62	return devm_snd_soc_register_component(&pdev->dev,
63			&soc_component_dev_wm8727, &wm8727_dai, 1);
64}
65
66static struct platform_driver wm8727_codec_driver = {
67	.driver = {
68			.name = "wm8727",
69	},
70
71	.probe = wm8727_probe,
72};
73
74module_platform_driver(wm8727_codec_driver);
75
76MODULE_DESCRIPTION("ASoC wm8727 driver");
77MODULE_AUTHOR("Neil Jones");
78MODULE_LICENSE("GPL");
79