1/*
 2 * This is a simple driver for the GTM601 Voice PCM interface
 3 *
 4 * Copyright (C) 2015 Goldelico GmbH
 5 *
 6 * Author: Marek Belisko <marek@goldelico.com>
 7 *
 8 * Based on wm8727.c driver
 9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
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/ac97_codec.h>
23#include <sound/initval.h>
24#include <sound/soc.h>
25
26static const struct snd_soc_dapm_widget gtm601_dapm_widgets[] = {
27	SND_SOC_DAPM_OUTPUT("AOUT"),
28	SND_SOC_DAPM_INPUT("AIN"),
29};
30
31static const struct snd_soc_dapm_route gtm601_dapm_routes[] = {
32	{ "AOUT", NULL, "Playback" },
33	{ "Capture", NULL, "AIN" },
34};
35
36static struct snd_soc_dai_driver gtm601_dai = {
37	.name = "gtm601",
38	.playback = {
39		.stream_name = "Playback",
40		.channels_min = 1,
41		.channels_max = 1,
42		.rates = SNDRV_PCM_RATE_8000,
43		.formats = SNDRV_PCM_FMTBIT_S16_LE,
44		},
45	.capture = {
46		.stream_name = "Capture",
47		.channels_min = 1,
48		.channels_max = 1,
49		.rates = SNDRV_PCM_RATE_8000,
50		.formats = SNDRV_PCM_FMTBIT_S16_LE,
51	},
52};
53
54static const struct snd_soc_codec_driver soc_codec_dev_gtm601 = {
55	.component_driver = {
56		.dapm_widgets		= gtm601_dapm_widgets,
57		.num_dapm_widgets	= ARRAY_SIZE(gtm601_dapm_widgets),
58		.dapm_routes		= gtm601_dapm_routes,
59		.num_dapm_routes	= ARRAY_SIZE(gtm601_dapm_routes),
60	},
61};
62
63static int gtm601_platform_probe(struct platform_device *pdev)
64{
65	return snd_soc_register_codec(&pdev->dev,
66			&soc_codec_dev_gtm601, &gtm601_dai, 1);
67}
68
69static int gtm601_platform_remove(struct platform_device *pdev)
70{
71	snd_soc_unregister_codec(&pdev->dev);
72	return 0;
73}
74
75#if defined(CONFIG_OF)
76static const struct of_device_id gtm601_codec_of_match[] = {
77	{ .compatible = "option,gtm601", },
78	{},
79};
80MODULE_DEVICE_TABLE(of, gtm601_codec_of_match);
81#endif
82
83static struct platform_driver gtm601_codec_driver = {
84	.driver = {
85		.name = "gtm601",
86		.of_match_table = of_match_ptr(gtm601_codec_of_match),
87	},
88	.probe = gtm601_platform_probe,
89	.remove = gtm601_platform_remove,
90};
91
92module_platform_driver(gtm601_codec_driver);
93
94MODULE_DESCRIPTION("ASoC gtm601 driver");
95MODULE_AUTHOR("Marek Belisko <marek@goldelico.com>");
96MODULE_LICENSE("GPL");
97MODULE_ALIAS("platform:gtm601");