1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * wm8727.c
4 *
5 * Created on: 15-Oct-2009
6 * Author: neil.jones@imgtec.com
7 *
8 * Copyright (C) 2009 Imagination Technologies Ltd.
9 */
10
11 #include <linux/init.h>
12 #include <linux/slab.h>
13 #include <linux/module.h>
14 #include <linux/kernel.h>
15 #include <linux/device.h>
16 #include <sound/core.h>
17 #include <sound/pcm.h>
18 #include <sound/initval.h>
19 #include <sound/soc.h>
20
21 static const struct snd_soc_dapm_widget wm8727_dapm_widgets[] = {
22 SND_SOC_DAPM_OUTPUT("VOUTL"),
23 SND_SOC_DAPM_OUTPUT("VOUTR"),
24 };
25
26 static const struct snd_soc_dapm_route wm8727_dapm_routes[] = {
27 { "VOUTL", NULL, "Playback" },
28 { "VOUTR", NULL, "Playback" },
29 };
30
31 /*
32 * Note this is a simple chip with no configuration interface, sample rate is
33 * determined automatically by examining the Master clock and Bit clock ratios
34 */
35 #define WM8727_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
36 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\
37 SNDRV_PCM_RATE_192000)
38
39 static struct snd_soc_dai_driver wm8727_dai = {
40 .name = "wm8727-hifi",
41 .playback = {
42 .stream_name = "Playback",
43 .channels_min = 2,
44 .channels_max = 2,
45 .rates = WM8727_RATES,
46 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
47 },
48 };
49
50 static const struct snd_soc_component_driver soc_component_dev_wm8727 = {
51 .dapm_widgets = wm8727_dapm_widgets,
52 .num_dapm_widgets = ARRAY_SIZE(wm8727_dapm_widgets),
53 .dapm_routes = wm8727_dapm_routes,
54 .num_dapm_routes = ARRAY_SIZE(wm8727_dapm_routes),
55 .idle_bias_on = 1,
56 .use_pmdown_time = 1,
57 .endianness = 1,
58 };
59
60 static int wm8727_probe(struct platform_device *pdev)
61 {
62 return devm_snd_soc_register_component(&pdev->dev,
63 &soc_component_dev_wm8727, &wm8727_dai, 1);
64 }
65
66 static struct platform_driver wm8727_codec_driver = {
67 .driver = {
68 .name = "wm8727",
69 },
70
71 .probe = wm8727_probe,
72 };
73
74 module_platform_driver(wm8727_codec_driver);
75
76 MODULE_DESCRIPTION("ASoC wm8727 driver");
77 MODULE_AUTHOR("Neil Jones");
78 MODULE_LICENSE("GPL");
79
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