1 /*
2 * sound/soc/codecs/wm8782.c
3 * simple, strap-pin configured 24bit 2ch ADC
4 *
5 * Copyright: 2011 Raumfeld GmbH
6 * Author: Johannes Stezenbach <js@sig21.net>
7 *
8 * based on ad73311.c
9 * Copyright: Analog Device Inc.
10 * Author: Cliff Cai <cliff.cai@analog.com>
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 */
17
18 #include <linux/init.h>
19 #include <linux/slab.h>
20 #include <linux/module.h>
21 #include <linux/kernel.h>
22 #include <linux/device.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/ac97_codec.h>
26 #include <sound/initval.h>
27 #include <sound/soc.h>
28
29 static const struct snd_soc_dapm_widget wm8782_dapm_widgets[] = {
30 SND_SOC_DAPM_INPUT("AINL"),
31 SND_SOC_DAPM_INPUT("AINR"),
32 };
33
34 static const struct snd_soc_dapm_route wm8782_dapm_routes[] = {
35 { "Capture", NULL, "AINL" },
36 { "Capture", NULL, "AINR" },
37 };
38
39 static struct snd_soc_dai_driver wm8782_dai = {
40 .name = "wm8782",
41 .capture = {
42 .stream_name = "Capture",
43 .channels_min = 2,
44 .channels_max = 2,
45 /* For configurations with FSAMPEN=0 */
46 .rates = SNDRV_PCM_RATE_8000_48000,
47 .formats = SNDRV_PCM_FMTBIT_S16_LE |
48 SNDRV_PCM_FMTBIT_S20_3LE |
49 SNDRV_PCM_FMTBIT_S24_LE,
50 },
51 };
52
53 static const struct snd_soc_component_driver soc_component_dev_wm8782 = {
54 .dapm_widgets = wm8782_dapm_widgets,
55 .num_dapm_widgets = ARRAY_SIZE(wm8782_dapm_widgets),
56 .dapm_routes = wm8782_dapm_routes,
57 .num_dapm_routes = ARRAY_SIZE(wm8782_dapm_routes),
58 .idle_bias_on = 1,
59 .use_pmdown_time = 1,
60 .endianness = 1,
61 .non_legacy_dai_naming = 1,
62 };
63
wm8782_probe(struct platform_device * pdev)64 static int wm8782_probe(struct platform_device *pdev)
65 {
66 return devm_snd_soc_register_component(&pdev->dev,
67 &soc_component_dev_wm8782, &wm8782_dai, 1);
68 }
69
70 #ifdef CONFIG_OF
71 static const struct of_device_id wm8782_of_match[] = {
72 { .compatible = "wlf,wm8782", },
73 { }
74 };
75 MODULE_DEVICE_TABLE(of, wm8782_of_match);
76 #endif
77
78 static struct platform_driver wm8782_codec_driver = {
79 .driver = {
80 .name = "wm8782",
81 .of_match_table = of_match_ptr(wm8782_of_match),
82 },
83 .probe = wm8782_probe,
84 };
85
86 module_platform_driver(wm8782_codec_driver);
87
88 MODULE_DESCRIPTION("ASoC WM8782 driver");
89 MODULE_AUTHOR("Johannes Stezenbach <js@sig21.net>");
90 MODULE_LICENSE("GPL");
91
