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(dev: &pdev->dev, |
63 | component_driver: &soc_component_dev_wm8727, dai_drv: &wm8727_dai, num_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 | |