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}; 59 60static 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 66static struct platform_driver wm8727_codec_driver = { 67 .driver = { 68 .name = "wm8727", 69 }, 70 71 .probe = wm8727_probe, 72}; 73 74module_platform_driver(wm8727_codec_driver); 75 76MODULE_DESCRIPTION("ASoC wm8727 driver"); 77MODULE_AUTHOR("Neil Jones"); 78MODULE_LICENSE("GPL"); 79