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/of.h> |
17 | #include <sound/core.h> |
18 | #include <sound/pcm.h> |
19 | #include <sound/initval.h> |
20 | #include <sound/soc.h> |
21 | |
22 | static const struct snd_soc_dapm_widget gtm601_dapm_widgets[] = { |
23 | SND_SOC_DAPM_OUTPUT("AOUT" ), |
24 | SND_SOC_DAPM_INPUT("AIN" ), |
25 | }; |
26 | |
27 | static const struct snd_soc_dapm_route gtm601_dapm_routes[] = { |
28 | { "AOUT" , NULL, "Playback" }, |
29 | { "Capture" , NULL, "AIN" }, |
30 | }; |
31 | |
32 | static 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 | |
50 | static struct snd_soc_dai_driver bm818_dai = { |
51 | .name = "bm818" , |
52 | .playback = { |
53 | .stream_name = "Playback" , |
54 | .channels_min = 2, |
55 | .channels_max = 2, |
56 | .rates = SNDRV_PCM_RATE_48000, |
57 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
58 | }, |
59 | .capture = { |
60 | .stream_name = "Capture" , |
61 | .channels_min = 2, |
62 | .channels_max = 2, |
63 | .rates = SNDRV_PCM_RATE_48000, |
64 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
65 | }, |
66 | }; |
67 | |
68 | static const struct snd_soc_component_driver soc_component_dev_gtm601 = { |
69 | .dapm_widgets = gtm601_dapm_widgets, |
70 | .num_dapm_widgets = ARRAY_SIZE(gtm601_dapm_widgets), |
71 | .dapm_routes = gtm601_dapm_routes, |
72 | .num_dapm_routes = ARRAY_SIZE(gtm601_dapm_routes), |
73 | .idle_bias_on = 1, |
74 | .use_pmdown_time = 1, |
75 | .endianness = 1, |
76 | }; |
77 | |
78 | static int gtm601_platform_probe(struct platform_device *pdev) |
79 | { |
80 | const struct snd_soc_dai_driver *dai_driver; |
81 | |
82 | dai_driver = of_device_get_match_data(dev: &pdev->dev); |
83 | |
84 | return devm_snd_soc_register_component(dev: &pdev->dev, |
85 | component_driver: &soc_component_dev_gtm601, |
86 | dai_drv: (struct snd_soc_dai_driver *)dai_driver, num_dai: 1); |
87 | } |
88 | |
89 | static const struct of_device_id gtm601_codec_of_match[] __maybe_unused = { |
90 | { .compatible = "option,gtm601" , .data = (void *)>m601_dai }, |
91 | { .compatible = "broadmobi,bm818" , .data = (void *)&bm818_dai }, |
92 | {}, |
93 | }; |
94 | MODULE_DEVICE_TABLE(of, gtm601_codec_of_match); |
95 | |
96 | static struct platform_driver gtm601_codec_driver = { |
97 | .driver = { |
98 | .name = "gtm601" , |
99 | .of_match_table = of_match_ptr(gtm601_codec_of_match), |
100 | }, |
101 | .probe = gtm601_platform_probe, |
102 | }; |
103 | |
104 | module_platform_driver(gtm601_codec_driver); |
105 | |
106 | MODULE_DESCRIPTION("ASoC gtm601 driver" ); |
107 | MODULE_AUTHOR("Marek Belisko <marek@goldelico.com>" ); |
108 | MODULE_LICENSE("GPL" ); |
109 | MODULE_ALIAS("platform:gtm601" ); |
110 | |