sound/soc/codecs/wm8727.c

   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         .non_legacy_dai_naming  = 1,
  59 };
  60
  61 static int wm8727_probe(struct platform_device *pdev)
  62 {
  63         return devm_snd_soc_register_component(&pdev->dev,
  64                         &soc_component_dev_wm8727, &wm8727_dai, 1);
  65 }
  66
  67 static struct platform_driver wm8727_codec_driver = {
  68         .driver = {
  69                         .name = "wm8727",
  70         },
  71
  72         .probe = wm8727_probe,
  73 };
  74
  75 module_platform_driver(wm8727_codec_driver);
  76
  77 MODULE_DESCRIPTION("ASoC wm8727 driver");
  78 MODULE_AUTHOR("Neil Jones");
  79 MODULE_LICENSE("GPL");