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Neil Jones89933de2009-11-02 15:14:17 +00001/*
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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090016#include <linux/slab.h>
Neil Jones89933de2009-11-02 15:14:17 +000017#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/ac97_codec.h>
23#include <sound/initval.h>
24#include <sound/soc.h>
25
Neil Jones89933de2009-11-02 15:14:17 +000026/*
27 * Note this is a simple chip with no configuration interface, sample rate is
28 * determined automatically by examining the Master clock and Bit clock ratios
29 */
30#define WM8727_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
31 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\
32 SNDRV_PCM_RATE_192000)
33
34
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000035static struct snd_soc_dai_driver wm8727_dai = {
36 .name = "wm8727-hifi",
Neil Jones89933de2009-11-02 15:14:17 +000037 .playback = {
38 .stream_name = "Playback",
39 .channels_min = 2,
40 .channels_max = 2,
41 .rates = WM8727_RATES,
42 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
43 },
44};
Neil Jones89933de2009-11-02 15:14:17 +000045
Mark Brown48bd3472010-08-12 15:02:36 +010046static struct snd_soc_codec_driver soc_codec_dev_wm8727;
Mark Browncce2e9d2009-12-08 21:50:01 +000047
Bill Pemberton7a79e942012-12-07 09:26:37 -050048static int wm8727_probe(struct platform_device *pdev)
Neil Jones89933de2009-11-02 15:14:17 +000049{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000050 return snd_soc_register_codec(&pdev->dev,
51 &soc_codec_dev_wm8727, &wm8727_dai, 1);
Neil Jones89933de2009-11-02 15:14:17 +000052}
53
Bill Pemberton7a79e942012-12-07 09:26:37 -050054static int wm8727_remove(struct platform_device *pdev)
Neil Jones89933de2009-11-02 15:14:17 +000055{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000056 snd_soc_unregister_codec(&pdev->dev);
Neil Jones89933de2009-11-02 15:14:17 +000057 return 0;
58}
59
Mark Brown529697c2009-11-03 22:13:30 +000060static struct platform_driver wm8727_codec_driver = {
Neil Jones89933de2009-11-02 15:14:17 +000061 .driver = {
Mark Brown091edcc2011-12-02 22:08:49 +000062 .name = "wm8727",
Neil Jones89933de2009-11-02 15:14:17 +000063 .owner = THIS_MODULE,
64 },
65
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000066 .probe = wm8727_probe,
Bill Pemberton7a79e942012-12-07 09:26:37 -050067 .remove = wm8727_remove,
Neil Jones89933de2009-11-02 15:14:17 +000068};
69
Mark Brown5bbcc3c2011-11-23 22:52:08 +000070module_platform_driver(wm8727_codec_driver);
Neil Jones89933de2009-11-02 15:14:17 +000071
72MODULE_DESCRIPTION("ASoC wm8727 driver");
73MODULE_AUTHOR("Neil Jones");
74MODULE_LICENSE("GPL");