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/initval.h> 23 #include <sound/soc.h> 24 25 static const struct snd_soc_dapm_widget wm8727_dapm_widgets[] = { 26 SND_SOC_DAPM_OUTPUT("VOUTL"), 27 SND_SOC_DAPM_OUTPUT("VOUTR"), 28 }; 29 30 static const struct snd_soc_dapm_route wm8727_dapm_routes[] = { 31 { "VOUTL", NULL, "Playback" }, 32 { "VOUTR", NULL, "Playback" }, 33 }; 34 35 /* 36 * Note this is a simple chip with no configuration interface, sample rate is 37 * determined automatically by examining the Master clock and Bit clock ratios 38 */ 39 #define WM8727_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ 40 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\ 41 SNDRV_PCM_RATE_192000) 42 43 static struct snd_soc_dai_driver wm8727_dai = { 44 .name = "wm8727-hifi", 45 .playback = { 46 .stream_name = "Playback", 47 .channels_min = 2, 48 .channels_max = 2, 49 .rates = WM8727_RATES, 50 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE, 51 }, 52 }; 53 54 static const struct snd_soc_component_driver soc_component_dev_wm8727 = { 55 .dapm_widgets = wm8727_dapm_widgets, 56 .num_dapm_widgets = ARRAY_SIZE(wm8727_dapm_widgets), 57 .dapm_routes = wm8727_dapm_routes, 58 .num_dapm_routes = ARRAY_SIZE(wm8727_dapm_routes), 59 .idle_bias_on = 1, 60 .use_pmdown_time = 1, 61 .endianness = 1, 62 .non_legacy_dai_naming = 1, 63 }; 64 65 static int wm8727_probe(struct platform_device *pdev) 66 { 67 return devm_snd_soc_register_component(&pdev->dev, 68 &soc_component_dev_wm8727, &wm8727_dai, 1); 69 } 70 71 static struct platform_driver wm8727_codec_driver = { 72 .driver = { 73 .name = "wm8727", 74 }, 75 76 .probe = wm8727_probe, 77 }; 78 79 module_platform_driver(wm8727_codec_driver); 80 81 MODULE_DESCRIPTION("ASoC wm8727 driver"); 82 MODULE_AUTHOR("Neil Jones"); 83 MODULE_LICENSE("GPL"); 84