1 /* 2 * ads117x.c -- Driver for ads1174/8 ADC chips 3 * 4 * Copyright 2009 ShotSpotter Inc. 5 * Author: Graeme Gregory <gg@slimlogic.co.uk> 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the 9 * Free Software Foundation; either version 2 of the License, or (at your 10 * option) any later version. 11 */ 12 13 #include <linux/kernel.h> 14 #include <linux/slab.h> 15 #include <linux/init.h> 16 #include <linux/device.h> 17 #include <sound/core.h> 18 #include <sound/pcm.h> 19 #include <sound/initval.h> 20 #include <sound/soc.h> 21 22 #define ADS117X_RATES (SNDRV_PCM_RATE_8000_48000) 23 #define ADS117X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE) 24 25 static struct snd_soc_dai_driver ads117x_dai = { 26 /* ADC */ 27 .name = "ads117x-hifi", 28 .capture = { 29 .stream_name = "Capture", 30 .channels_min = 1, 31 .channels_max = 32, 32 .rates = ADS117X_RATES, 33 .formats = ADS117X_FORMATS,}, 34 }; 35 36 static struct snd_soc_codec_driver soc_codec_dev_ads117x; 37 38 static __devinit int ads117x_probe(struct platform_device *pdev) 39 { 40 return snd_soc_register_codec(&pdev->dev, 41 &soc_codec_dev_ads117x, &ads117x_dai, 1); 42 } 43 44 static int __devexit ads117x_remove(struct platform_device *pdev) 45 { 46 snd_soc_unregister_codec(&pdev->dev); 47 return 0; 48 } 49 50 static struct platform_driver ads117x_codec_driver = { 51 .driver = { 52 .name = "ads117x-codec", 53 .owner = THIS_MODULE, 54 }, 55 56 .probe = ads117x_probe, 57 .remove = __devexit_p(ads117x_remove), 58 }; 59 60 static int __init ads117x_init(void) 61 { 62 return platform_driver_register(&ads117x_codec_driver); 63 } 64 module_init(ads117x_init); 65 66 static void __exit ads117x_exit(void) 67 { 68 platform_driver_unregister(&ads117x_codec_driver); 69 } 70 module_exit(ads117x_exit); 71 72 MODULE_DESCRIPTION("ASoC ads117x driver"); 73 MODULE_AUTHOR("Graeme Gregory"); 74 MODULE_LICENSE("GPL"); 75