tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * This is a simple driver for the GTM601 Voice PCM interface
4 *
5 * Copyright (C) 2015 Goldelico GmbH
6 *
7 * Author: Marek Belisko <marek@goldelico.com>
8 *
9 * Based on wm8727.c driver
10 */
11
12#include <linux/init.h>
13#include <linux/slab.h>
14#include <linux/module.h>
15#include <linux/kernel.h>
16#include <linux/device.h>
17#include <sound/core.h>
18#include <sound/pcm.h>
19#include <sound/initval.h>
20#include <sound/soc.h>
21
22static const struct snd_soc_dapm_widget gtm601_dapm_widgets[] = {
23 SND_SOC_DAPM_OUTPUT("AOUT"),
24 SND_SOC_DAPM_INPUT("AIN"),
25};
26
27static const struct snd_soc_dapm_route gtm601_dapm_routes[] = {
28 { "AOUT", NULL, "Playback" },
29 { "Capture", NULL, "AIN" },
30};
31
32static struct snd_soc_dai_driver gtm601_dai = {
33 .name = "gtm601",
34 .playback = {
35 .stream_name = "Playback",
36 .channels_min = 1,
37 .channels_max = 1,
38 .rates = SNDRV_PCM_RATE_8000,
39 .formats = SNDRV_PCM_FMTBIT_S16_LE,
40 },
41 .capture = {
42 .stream_name = "Capture",
43 .channels_min = 1,
44 .channels_max = 1,
45 .rates = SNDRV_PCM_RATE_8000,
46 .formats = SNDRV_PCM_FMTBIT_S16_LE,
47 },
48};
49
50static const struct snd_soc_component_driver soc_component_dev_gtm601 = {
51 .dapm_widgets = gtm601_dapm_widgets,
52 .num_dapm_widgets = ARRAY_SIZE(gtm601_dapm_widgets),
53 .dapm_routes = gtm601_dapm_routes,
54 .num_dapm_routes = ARRAY_SIZE(gtm601_dapm_routes),
55 .idle_bias_on = 1,
56 .use_pmdown_time = 1,
57 .endianness = 1,
58 .non_legacy_dai_naming = 1,
59};
60
61static int gtm601_platform_probe(struct platform_device *pdev)
62{
63 return devm_snd_soc_register_component(&pdev->dev,
64 &soc_component_dev_gtm601, >m601_dai, 1);
65}
66
67#if defined(CONFIG_OF)
68static const struct of_device_id gtm601_codec_of_match[] = {
69 { .compatible = "option,gtm601", },
70 {},
71};
72MODULE_DEVICE_TABLE(of, gtm601_codec_of_match);
73#endif
74
75static struct platform_driver gtm601_codec_driver = {
76 .driver = {
77 .name = "gtm601",
78 .of_match_table = of_match_ptr(gtm601_codec_of_match),
79 },
80 .probe = gtm601_platform_probe,
81};
82
83module_platform_driver(gtm601_codec_driver);
84
85MODULE_DESCRIPTION("ASoC gtm601 driver");
86MODULE_AUTHOR("Marek Belisko <marek@goldelico.com>");
87MODULE_LICENSE("GPL");
88MODULE_ALIAS("platform:gtm601");