1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Driver for generic Bluetooth SCO link
4*4882a593Smuzhiyun * Copyright 2011 Lars-Peter Clausen <lars@metafoo.de>
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <linux/init.h>
8*4882a593Smuzhiyun #include <linux/module.h>
9*4882a593Smuzhiyun #include <linux/platform_device.h>
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #include <sound/soc.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun static const struct snd_soc_dapm_widget bt_sco_widgets[] = {
14*4882a593Smuzhiyun SND_SOC_DAPM_INPUT("RX"),
15*4882a593Smuzhiyun SND_SOC_DAPM_OUTPUT("TX"),
16*4882a593Smuzhiyun };
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun static const struct snd_soc_dapm_route bt_sco_routes[] = {
19*4882a593Smuzhiyun { "Capture", NULL, "RX" },
20*4882a593Smuzhiyun { "TX", NULL, "Playback" },
21*4882a593Smuzhiyun };
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun static struct snd_soc_dai_driver bt_sco_dai[] = {
24*4882a593Smuzhiyun {
25*4882a593Smuzhiyun .name = "bt-sco-pcm",
26*4882a593Smuzhiyun .playback = {
27*4882a593Smuzhiyun .stream_name = "Playback",
28*4882a593Smuzhiyun .channels_min = 1,
29*4882a593Smuzhiyun .channels_max = 2,
30*4882a593Smuzhiyun .rates = SNDRV_PCM_RATE_8000,
31*4882a593Smuzhiyun .formats = SNDRV_PCM_FMTBIT_S16_LE,
32*4882a593Smuzhiyun },
33*4882a593Smuzhiyun .capture = {
34*4882a593Smuzhiyun .stream_name = "Capture",
35*4882a593Smuzhiyun .channels_min = 1,
36*4882a593Smuzhiyun .channels_max = 2,
37*4882a593Smuzhiyun .rates = SNDRV_PCM_RATE_8000,
38*4882a593Smuzhiyun .formats = SNDRV_PCM_FMTBIT_S16_LE,
39*4882a593Smuzhiyun },
40*4882a593Smuzhiyun },
41*4882a593Smuzhiyun {
42*4882a593Smuzhiyun .name = "bt-sco-pcm-wb",
43*4882a593Smuzhiyun .playback = {
44*4882a593Smuzhiyun .stream_name = "Playback",
45*4882a593Smuzhiyun .channels_min = 1,
46*4882a593Smuzhiyun .channels_max = 2,
47*4882a593Smuzhiyun .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
48*4882a593Smuzhiyun .formats = SNDRV_PCM_FMTBIT_S16_LE,
49*4882a593Smuzhiyun },
50*4882a593Smuzhiyun .capture = {
51*4882a593Smuzhiyun .stream_name = "Capture",
52*4882a593Smuzhiyun .channels_min = 1,
53*4882a593Smuzhiyun .channels_max = 2,
54*4882a593Smuzhiyun .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
55*4882a593Smuzhiyun .formats = SNDRV_PCM_FMTBIT_S16_LE,
56*4882a593Smuzhiyun },
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun };
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun static const struct snd_soc_component_driver soc_component_dev_bt_sco = {
61*4882a593Smuzhiyun .dapm_widgets = bt_sco_widgets,
62*4882a593Smuzhiyun .num_dapm_widgets = ARRAY_SIZE(bt_sco_widgets),
63*4882a593Smuzhiyun .dapm_routes = bt_sco_routes,
64*4882a593Smuzhiyun .num_dapm_routes = ARRAY_SIZE(bt_sco_routes),
65*4882a593Smuzhiyun .idle_bias_on = 1,
66*4882a593Smuzhiyun .use_pmdown_time = 1,
67*4882a593Smuzhiyun .endianness = 1,
68*4882a593Smuzhiyun .non_legacy_dai_naming = 1,
69*4882a593Smuzhiyun };
70*4882a593Smuzhiyun
bt_sco_probe(struct platform_device * pdev)71*4882a593Smuzhiyun static int bt_sco_probe(struct platform_device *pdev)
72*4882a593Smuzhiyun {
73*4882a593Smuzhiyun return devm_snd_soc_register_component(&pdev->dev,
74*4882a593Smuzhiyun &soc_component_dev_bt_sco,
75*4882a593Smuzhiyun bt_sco_dai, ARRAY_SIZE(bt_sco_dai));
76*4882a593Smuzhiyun }
77*4882a593Smuzhiyun
bt_sco_remove(struct platform_device * pdev)78*4882a593Smuzhiyun static int bt_sco_remove(struct platform_device *pdev)
79*4882a593Smuzhiyun {
80*4882a593Smuzhiyun return 0;
81*4882a593Smuzhiyun }
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun static const struct platform_device_id bt_sco_driver_ids[] = {
84*4882a593Smuzhiyun {
85*4882a593Smuzhiyun .name = "dfbmcs320",
86*4882a593Smuzhiyun },
87*4882a593Smuzhiyun {
88*4882a593Smuzhiyun .name = "bt-sco",
89*4882a593Smuzhiyun },
90*4882a593Smuzhiyun {},
91*4882a593Smuzhiyun };
92*4882a593Smuzhiyun MODULE_DEVICE_TABLE(platform, bt_sco_driver_ids);
93*4882a593Smuzhiyun
94*4882a593Smuzhiyun #if defined(CONFIG_OF)
95*4882a593Smuzhiyun static const struct of_device_id bt_sco_codec_of_match[] = {
96*4882a593Smuzhiyun { .compatible = "delta,dfbmcs320", },
97*4882a593Smuzhiyun { .compatible = "linux,bt-sco", },
98*4882a593Smuzhiyun {},
99*4882a593Smuzhiyun };
100*4882a593Smuzhiyun MODULE_DEVICE_TABLE(of, bt_sco_codec_of_match);
101*4882a593Smuzhiyun #endif
102*4882a593Smuzhiyun
103*4882a593Smuzhiyun static struct platform_driver bt_sco_driver = {
104*4882a593Smuzhiyun .driver = {
105*4882a593Smuzhiyun .name = "bt-sco",
106*4882a593Smuzhiyun .of_match_table = of_match_ptr(bt_sco_codec_of_match),
107*4882a593Smuzhiyun },
108*4882a593Smuzhiyun .probe = bt_sco_probe,
109*4882a593Smuzhiyun .remove = bt_sco_remove,
110*4882a593Smuzhiyun .id_table = bt_sco_driver_ids,
111*4882a593Smuzhiyun };
112*4882a593Smuzhiyun
113*4882a593Smuzhiyun module_platform_driver(bt_sco_driver);
114*4882a593Smuzhiyun
115*4882a593Smuzhiyun MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
116*4882a593Smuzhiyun MODULE_DESCRIPTION("ASoC generic bluetooth sco link driver");
117*4882a593Smuzhiyun MODULE_LICENSE("GPL");
118