1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Driver for generic Bluetooth SCO link
4 * Copyright 2011 Lars-Peter Clausen <lars@metafoo.de>
5 */
6
7#include <linux/init.h>
8#include <linux/module.h>
9#include <linux/platform_device.h>
10
11#include <sound/soc.h>
12
13static const struct snd_soc_dapm_widget bt_sco_widgets[] = {
14	SND_SOC_DAPM_INPUT("RX"),
15	SND_SOC_DAPM_OUTPUT("TX"),
16	SND_SOC_DAPM_AIF_IN("BT_SCO_RX", "Playback", 0,
17			    SND_SOC_NOPM, 0, 0),
18	SND_SOC_DAPM_AIF_OUT("BT_SCO_TX", "Capture", 0,
19			     SND_SOC_NOPM, 0, 0),
20};
21
22static const struct snd_soc_dapm_route bt_sco_routes[] = {
23	{ "BT_SCO_TX", NULL, "RX" },
24	{ "TX", NULL, "BT_SCO_RX" },
25};
26
27static struct snd_soc_dai_driver bt_sco_dai[] = {
28	{
29		.name = "bt-sco-pcm",
30		.playback = {
31			.stream_name = "Playback",
32			.channels_min = 1,
33			.channels_max = 1,
34			.rates = SNDRV_PCM_RATE_8000,
35			.formats = SNDRV_PCM_FMTBIT_S16_LE,
36		},
37		.capture = {
38			 .stream_name = "Capture",
39			.channels_min = 1,
40			.channels_max = 1,
41			.rates = SNDRV_PCM_RATE_8000,
42			.formats = SNDRV_PCM_FMTBIT_S16_LE,
43		},
44	},
45	{
46		.name = "bt-sco-pcm-wb",
47		.playback = {
48			.stream_name = "Playback",
49			.channels_min = 1,
50			.channels_max = 1,
51			.rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
52			.formats = SNDRV_PCM_FMTBIT_S16_LE,
53		},
54		.capture = {
55			 .stream_name = "Capture",
56			.channels_min = 1,
57			.channels_max = 1,
58			.rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
59			.formats = SNDRV_PCM_FMTBIT_S16_LE,
60		},
61	}
62};
63
64static const struct snd_soc_component_driver soc_component_dev_bt_sco = {
65	.dapm_widgets		= bt_sco_widgets,
66	.num_dapm_widgets	= ARRAY_SIZE(bt_sco_widgets),
67	.dapm_routes		= bt_sco_routes,
68	.num_dapm_routes	= ARRAY_SIZE(bt_sco_routes),
69	.idle_bias_on		= 1,
70	.use_pmdown_time	= 1,
71	.endianness		= 1,
72};
73
74static int bt_sco_probe(struct platform_device *pdev)
75{
76	return devm_snd_soc_register_component(&pdev->dev,
77				      &soc_component_dev_bt_sco,
78				      bt_sco_dai, ARRAY_SIZE(bt_sco_dai));
79}
80
81static const struct platform_device_id bt_sco_driver_ids[] = {
82	{
83		.name		= "dfbmcs320",
84	},
85	{
86		.name		= "bt-sco",
87	},
88	{},
89};
90MODULE_DEVICE_TABLE(platform, bt_sco_driver_ids);
91
92#if defined(CONFIG_OF)
93static const struct of_device_id bt_sco_codec_of_match[] = {
94	{ .compatible = "delta,dfbmcs320", },
95	{ .compatible = "linux,bt-sco", },
96	{},
97};
98MODULE_DEVICE_TABLE(of, bt_sco_codec_of_match);
99#endif
100
101static struct platform_driver bt_sco_driver = {
102	.driver = {
103		.name = "bt-sco",
104		.of_match_table = of_match_ptr(bt_sco_codec_of_match),
105	},
106	.probe = bt_sco_probe,
107	.id_table = bt_sco_driver_ids,
108};
109
110module_platform_driver(bt_sco_driver);
111
112MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
113MODULE_DESCRIPTION("ASoC generic bluetooth sco link driver");
114MODULE_LICENSE("GPL");
115