1/*
 2 * wm8727.c
 3 *
 4 *  Created on: 15-Oct-2009
 5 *      Author: neil.jones@imgtec.com
 6 *
 7 * Copyright (C) 2009 Imagination Technologies Ltd.
 8 *
 9 *  This program is free software; you can redistribute  it and/or modify it
10 *  under  the terms of  the GNU General  Public License as published by the
11 *  Free Software Foundation;  either version 2 of the  License, or (at your
12 *  option) any later version.
13 */
14
15#include <linux/init.h>
16#include <linux/slab.h>
17#include <linux/module.h>
18#include <linux/kernel.h>
19#include <linux/device.h>
20#include <sound/core.h>
21#include <sound/pcm.h>
22#include <sound/initval.h>
23#include <sound/soc.h>
24
25static const struct snd_soc_dapm_widget wm8727_dapm_widgets[] = {
26SND_SOC_DAPM_OUTPUT("VOUTL"),
27SND_SOC_DAPM_OUTPUT("VOUTR"),
28};
29
30static const struct snd_soc_dapm_route wm8727_dapm_routes[] = {
31	{ "VOUTL", NULL, "Playback" },
32	{ "VOUTR", NULL, "Playback" },
33};
34
35/*
36 * Note this is a simple chip with no configuration interface, sample rate is
37 * determined automatically by examining the Master clock and Bit clock ratios
38 */
39#define WM8727_RATES  (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
40			SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\
41			SNDRV_PCM_RATE_192000)
42
43static struct snd_soc_dai_driver wm8727_dai = {
44	.name = "wm8727-hifi",
45	.playback = {
46		.stream_name = "Playback",
47		.channels_min = 2,
48		.channels_max = 2,
49		.rates = WM8727_RATES,
50		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
51		},
52};
53
54static const struct snd_soc_component_driver soc_component_dev_wm8727 = {
55	.dapm_widgets		= wm8727_dapm_widgets,
56	.num_dapm_widgets	= ARRAY_SIZE(wm8727_dapm_widgets),
57	.dapm_routes		= wm8727_dapm_routes,
58	.num_dapm_routes	= ARRAY_SIZE(wm8727_dapm_routes),
59	.idle_bias_on		= 1,
60	.use_pmdown_time	= 1,
61	.endianness		= 1,
62	.non_legacy_dai_naming	= 1,
63};
64
65static int wm8727_probe(struct platform_device *pdev)
66{
67	return devm_snd_soc_register_component(&pdev->dev,
68			&soc_component_dev_wm8727, &wm8727_dai, 1);
69}
70
71static struct platform_driver wm8727_codec_driver = {
72	.driver = {
73			.name = "wm8727",
74	},
75
76	.probe = wm8727_probe,
77};
78
79module_platform_driver(wm8727_codec_driver);
80
81MODULE_DESCRIPTION("ASoC wm8727 driver");
82MODULE_AUTHOR("Neil Jones");
83MODULE_LICENSE("GPL");