| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * wm8727.c |
| 3 | * |
| 4 | * Created on: 15-Oct-2009 |
| 5 | * Author: neil.jones@imgtec.com |
| 6 | * |
| 7 | * Copyright (C) 2009 Imagination Technologies Ltd. |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify it |
| 10 | * under the terms of the GNU General Public License as published by the |
| 11 | * Free Software Foundation; either version 2 of the License, or (at your |
| 12 | * option) any later version. |
| 13 | */ |
| 14 | |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/device.h> |
| 20 | #include <sound/core.h> |
| 21 | #include <sound/pcm.h> |
| 22 | #include <sound/ac97_codec.h> |
| 23 | #include <sound/initval.h> |
| 24 | #include <sound/soc.h> |
| 25 | |
| 26 | static const struct snd_soc_dapm_widget wm8727_dapm_widgets[] = { |
| 27 | SND_SOC_DAPM_OUTPUT("VOUTL"), |
| 28 | SND_SOC_DAPM_OUTPUT("VOUTR"), |
| 29 | }; |
| 30 | |
| 31 | static const struct snd_soc_dapm_route wm8727_dapm_routes[] = { |
| 32 | { "VOUTL", NULL, "Playback" }, |
| 33 | { "VOUTR", NULL, "Playback" }, |
| 34 | }; |
| 35 | |
| 36 | /* |
| 37 | * Note this is a simple chip with no configuration interface, sample rate is |
| 38 | * determined automatically by examining the Master clock and Bit clock ratios |
| 39 | */ |
| 40 | #define WM8727_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ |
| 41 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\ |
| 42 | SNDRV_PCM_RATE_192000) |
| 43 | |
| 44 | |
| 45 | static struct snd_soc_dai_driver wm8727_dai = { |
| 46 | .name = "wm8727-hifi", |
| 47 | .playback = { |
| 48 | .stream_name = "Playback", |
| 49 | .channels_min = 2, |
| 50 | .channels_max = 2, |
| 51 | .rates = WM8727_RATES, |
| 52 | .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE, |
| 53 | }, |
| 54 | }; |
| 55 | |
| 56 | static const struct snd_soc_codec_driver soc_codec_dev_wm8727 = { |
| 57 | .component_driver = { |
| 58 | .dapm_widgets = wm8727_dapm_widgets, |
| 59 | .num_dapm_widgets = ARRAY_SIZE(wm8727_dapm_widgets), |
| 60 | .dapm_routes = wm8727_dapm_routes, |
| 61 | .num_dapm_routes = ARRAY_SIZE(wm8727_dapm_routes), |
| 62 | }, |
| 63 | }; |
| 64 | |
| 65 | static int wm8727_probe(struct platform_device *pdev) |
| 66 | { |
| 67 | return snd_soc_register_codec(&pdev->dev, |
| 68 | &soc_codec_dev_wm8727, &wm8727_dai, 1); |
| 69 | } |
| 70 | |
| 71 | static int wm8727_remove(struct platform_device *pdev) |
| 72 | { |
| 73 | snd_soc_unregister_codec(&pdev->dev); |
| 74 | return 0; |
| 75 | } |
| 76 | |
| 77 | static struct platform_driver wm8727_codec_driver = { |
| 78 | .driver = { |
| 79 | .name = "wm8727", |
| 80 | }, |
| 81 | |
| 82 | .probe = wm8727_probe, |
| 83 | .remove = wm8727_remove, |
| 84 | }; |
| 85 | |
| 86 | module_platform_driver(wm8727_codec_driver); |
| 87 | |
| 88 | MODULE_DESCRIPTION("ASoC wm8727 driver"); |
| 89 | MODULE_AUTHOR("Neil Jones"); |
| 90 | MODULE_LICENSE("GPL"); |