1/*
 2 * ALSA SoC SPDIF DIT driver
 3 *
 4 *  This driver is used by controllers which can operate in DIT (SPDI/F) where
 5 *  no codec is needed.  This file provides stub codec that can be used
 6 *  in these configurations. TI DaVinci Audio controller uses this driver.
 7 *
 8 * Author:      Steve Chen,  <schen@mvista.com>
 9 * Copyright:   (C) 2009 MontaVista Software, Inc., <source@mvista.com>
10 * Copyright:   (C) 2009  Texas Instruments, India
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 */
16
17#include <linux/module.h>
18#include <linux/moduleparam.h>
19#include <linux/slab.h>
20#include <sound/soc.h>
21#include <sound/pcm.h>
22#include <sound/initval.h>
23
24#define DRV_NAME "spdif-dit"
25
26#define STUB_RATES	SNDRV_PCM_RATE_8000_96000
27#define STUB_FORMATS	SNDRV_PCM_FMTBIT_S16_LE
28
29
30static struct snd_soc_codec_driver soc_codec_spdif_dit;
31
32static struct snd_soc_dai_driver dit_stub_dai = {
33	.name		= "dit-hifi",
34	.playback 	= {
35		.stream_name	= "Playback",
36		.channels_min	= 1,
37		.channels_max	= 384,
38		.rates		= STUB_RATES,
39		.formats	= STUB_FORMATS,
40	},
41};
42
43static int spdif_dit_probe(struct platform_device *pdev)
44{
45	return snd_soc_register_codec(&pdev->dev, &soc_codec_spdif_dit,
46			&dit_stub_dai, 1);
47}
48
49static int spdif_dit_remove(struct platform_device *pdev)
50{
51	snd_soc_unregister_codec(&pdev->dev);
52	return 0;
53}
54
55static struct platform_driver spdif_dit_driver = {
56	.probe		= spdif_dit_probe,
57	.remove		= spdif_dit_remove,
58	.driver		= {
59		.name	= DRV_NAME,
60		.owner	= THIS_MODULE,
61	},
62};
63
64module_platform_driver(spdif_dit_driver);
65
66MODULE_AUTHOR("Steve Chen <schen@mvista.com>");
67MODULE_DESCRIPTION("SPDIF dummy codec driver");
68MODULE_LICENSE("GPL");
69MODULE_ALIAS("platform:" DRV_NAME);