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"); 80