LXR linux/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
  21static const struct snd_soc_dapm_widget wm8727_dapm_widgets[] = {
  22SND_SOC_DAPM_OUTPUT("VOUTL"),
  23SND_SOC_DAPM_OUTPUT("VOUTR"),
  24};
  25
  26static 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
  39static 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
  50static 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
  61static 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
  67static struct platform_driver wm8727_codec_driver = {
  68        .driver = {
  69                        .name = "wm8727",
  70        },
  71
  72        .probe = wm8727_probe,
  73};
  74
  75module_platform_driver(wm8727_codec_driver);
  76
  77MODULE_DESCRIPTION("ASoC wm8727 driver");
  78MODULE_AUTHOR("Neil Jones");
  79MODULE_LICENSE("GPL");
  80