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/ac97_codec.h> 23 #include <sound/initval.h> 24 #include <sound/soc.h> 25 26 /* 27 * Note this is a simple chip with no configuration interface, sample rate is 28 * determined automatically by examining the Master clock and Bit clock ratios 29 */ 30 #define WM8727_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ 31 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\ 32 SNDRV_PCM_RATE_192000) 33 34 35 static struct snd_soc_dai_driver wm8727_dai = { 36 .name = "wm8727-hifi", 37 .playback = { 38 .stream_name = "Playback", 39 .channels_min = 2, 40 .channels_max = 2, 41 .rates = WM8727_RATES, 42 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE, 43 }, 44 }; 45 46 static struct snd_soc_codec_driver soc_codec_dev_wm8727; 47 48 static int wm8727_probe(struct platform_device *pdev) 49 { 50 return snd_soc_register_codec(&pdev->dev, 51 &soc_codec_dev_wm8727, &wm8727_dai, 1); 52 } 53 54 static int wm8727_remove(struct platform_device *pdev) 55 { 56 snd_soc_unregister_codec(&pdev->dev); 57 return 0; 58 } 59 60 static struct platform_driver wm8727_codec_driver = { 61 .driver = { 62 .name = "wm8727", 63 .owner = THIS_MODULE, 64 }, 65 66 .probe = wm8727_probe, 67 .remove = wm8727_remove, 68 }; 69 70 module_platform_driver(wm8727_codec_driver); 71 72 MODULE_DESCRIPTION("ASoC wm8727 driver"); 73 MODULE_AUTHOR("Neil Jones"); 74 MODULE_LICENSE("GPL"); 75