From 2dcf9fb99d4ecadecb2685a9eb82e6b85511c960 Mon Sep 17 00:00:00 2001 From: Graeme Gregory Date: Wed, 4 Nov 2009 17:49:22 +0000 Subject: ASoC: ADS117x ADC driver This patch adds support for the TI ADS117x family of multichannel ADCs and was sponsored by Shotspotter Inc. Signed-off-by: Graeme Gregory Signed-off-by: Liam Girdwood Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 4a3e8dc..52b005f 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -15,6 +15,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_AD1836 if SPI_MASTER select SND_SOC_AD1938 if SPI_MASTER select SND_SOC_AD1980 if SND_SOC_AC97_BUS + select SND_SOC_ADS117X select SND_SOC_AD73311 if I2C select SND_SOC_AK4104 if SPI_MASTER select SND_SOC_AK4535 if I2C @@ -91,6 +92,9 @@ config SND_SOC_AD1980 config SND_SOC_AD73311 tristate + +config SND_SOC_ADS117X + tristate config SND_SOC_AK4104 tristate diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index cacfc76..dbaecb1 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -3,6 +3,7 @@ snd-soc-ad1836-objs := ad1836.o snd-soc-ad1938-objs := ad1938.o snd-soc-ad1980-objs := ad1980.o snd-soc-ad73311-objs := ad73311.o +snd-soc-ads117x-objs := ads117x.o snd-soc-ak4104-objs := ak4104.o snd-soc-ak4535-objs := ak4535.o snd-soc-ak4642-objs := ak4642.o @@ -58,6 +59,7 @@ obj-$(CONFIG_SND_SOC_AD1836) += snd-soc-ad1836.o obj-$(CONFIG_SND_SOC_AD1938) += snd-soc-ad1938.o obj-$(CONFIG_SND_SOC_AD1980) += snd-soc-ad1980.o obj-$(CONFIG_SND_SOC_AD73311) += snd-soc-ad73311.o +obj-$(CONFIG_SND_SOC_ADS117X) += snd-soc-ads117x.o obj-$(CONFIG_SND_SOC_AK4104) += snd-soc-ak4104.o obj-$(CONFIG_SND_SOC_AK4535) += snd-soc-ak4535.o obj-$(CONFIG_SND_SOC_AK4642) += snd-soc-ak4642.o diff --git a/sound/soc/codecs/ads117x.c b/sound/soc/codecs/ads117x.c new file mode 100644 index 0000000..f323092 --- /dev/null +++ b/sound/soc/codecs/ads117x.c @@ -0,0 +1,127 @@ +/* + * ads117x.c -- Driver for ads1174/8 ADC chips + * + * Copyright 2009 ShotSpotter Inc. + * Author: Graeme Gregory + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "ads117x.h" + +#define ADS117X_RATES (SNDRV_PCM_RATE_8000_48000) + +#define ADS117X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE) + +struct snd_soc_dai ads117x_dai = { +/* ADC */ + .name = "ADS117X ADC", + .id = 1, + .capture = { + .stream_name = "Capture", + .channels_min = 1, + .channels_max = 32, + .rates = ADS117X_RATES, + .formats = ADS117X_FORMATS,}, +}; +EXPORT_SYMBOL_GPL(ads117x_dai); + +/* + * initialise the ads117x driver + */ +static int ads117x_init(struct snd_soc_device *socdev) +{ + struct snd_soc_codec *codec = socdev->card->codec; + int ret = 0; + + codec->name = "ADS117X"; + codec->owner = THIS_MODULE; + codec->dai = &ads117x_dai; + codec->num_dai = 1; + + /* register pcms */ + ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); + if (ret < 0) { + printk(KERN_ERR "ads117x: failed to create pcms\n"); + return ret; + } + + ret = snd_soc_init_card(socdev); + if (ret < 0) { + printk(KERN_ERR "ads117x: failed to register card\n"); + goto card_err; + } + return ret; + +card_err: + snd_soc_free_pcms(socdev); + return ret; +} + +static int ads117x_probe(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec; + int ret; + + pr_info("ads117x ADC\n"); + + codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); + if (codec == NULL) + return -ENOMEM; + + socdev->card->codec = codec; + mutex_init(&codec->mutex); + INIT_LIST_HEAD(&codec->dapm_widgets); + INIT_LIST_HEAD(&codec->dapm_paths); + + ret = ads117x_init(socdev); + if (ret != 0) + kfree(codec); + + return ret; +} + +static int ads117x_remove(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec = socdev->card->codec; + + snd_soc_free_pcms(socdev); + kfree(codec); + + return 0; +} + +struct snd_soc_codec_device soc_codec_dev_ads117x = { + .probe = ads117x_probe, + .remove = ads117x_remove, +}; +EXPORT_SYMBOL_GPL(soc_codec_dev_ads117x); + +static int __init ads117x_modinit(void) +{ + return snd_soc_register_dai(&ads117x_dai); +} +module_init(ads117x_modinit); + +static void __exit ads117x_exit(void) +{ + snd_soc_unregister_dai(&ads117x_dai); +} +module_exit(ads117x_exit); + +MODULE_DESCRIPTION("ASoC ads117x driver"); +MODULE_AUTHOR("Graeme Gregory"); +MODULE_LICENSE("GPL"); diff --git a/sound/soc/codecs/ads117x.h b/sound/soc/codecs/ads117x.h new file mode 100644 index 0000000..dbcf50e --- /dev/null +++ b/sound/soc/codecs/ads117x.h @@ -0,0 +1,13 @@ +/* + * ads117x.h -- Driver for ads1174/8 ADC chips + * + * Copyright 2009 ShotSpotter Inc. + * Author: Graeme Gregory + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +extern struct snd_soc_dai ads117x_dai; +extern struct snd_soc_codec_device soc_codec_dev_ads117x; -- cgit v0.10.2 From f3d0e82fe3cce0dd3ffcd9c59e6caa671a30f929 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 4 Nov 2009 21:43:27 +0000 Subject: ASoC: Update ads117x to current APIs Probe as a platform driver (ads117x) and remove the call to snd_soc_init_card(). Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/ads117x.c b/sound/soc/codecs/ads117x.c index f323092..cc96411 100644 --- a/sound/soc/codecs/ads117x.c +++ b/sound/soc/codecs/ads117x.c @@ -37,46 +37,12 @@ struct snd_soc_dai ads117x_dai = { }; EXPORT_SYMBOL_GPL(ads117x_dai); -/* - * initialise the ads117x driver - */ -static int ads117x_init(struct snd_soc_device *socdev) -{ - struct snd_soc_codec *codec = socdev->card->codec; - int ret = 0; - - codec->name = "ADS117X"; - codec->owner = THIS_MODULE; - codec->dai = &ads117x_dai; - codec->num_dai = 1; - - /* register pcms */ - ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); - if (ret < 0) { - printk(KERN_ERR "ads117x: failed to create pcms\n"); - return ret; - } - - ret = snd_soc_init_card(socdev); - if (ret < 0) { - printk(KERN_ERR "ads117x: failed to register card\n"); - goto card_err; - } - return ret; - -card_err: - snd_soc_free_pcms(socdev); - return ret; -} - static int ads117x_probe(struct platform_device *pdev) { struct snd_soc_device *socdev = platform_get_drvdata(pdev); struct snd_soc_codec *codec; int ret; - pr_info("ads117x ADC\n"); - codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); if (codec == NULL) return -ENOMEM; @@ -85,12 +51,20 @@ static int ads117x_probe(struct platform_device *pdev) mutex_init(&codec->mutex); INIT_LIST_HEAD(&codec->dapm_widgets); INIT_LIST_HEAD(&codec->dapm_paths); + codec->name = "ADS117X"; + codec->owner = THIS_MODULE; + codec->dai = &ads117x_dai; + codec->num_dai = 1; - ret = ads117x_init(socdev); - if (ret != 0) + /* register pcms */ + ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); + if (ret < 0) { + printk(KERN_ERR "ads117x: failed to create pcms\n"); kfree(codec); + return ret; + } - return ret; + return 0; } static int ads117x_remove(struct platform_device *pdev) @@ -110,15 +84,37 @@ struct snd_soc_codec_device soc_codec_dev_ads117x = { }; EXPORT_SYMBOL_GPL(soc_codec_dev_ads117x); -static int __init ads117x_modinit(void) +static __devinit int ads117x_platform_probe(struct platform_device *pdev) { + ads117x_dai.dev = &pdev->dev; return snd_soc_register_dai(&ads117x_dai); } -module_init(ads117x_modinit); -static void __exit ads117x_exit(void) +static int __devexit ads117x_platform_remove(struct platform_device *pdev) { snd_soc_unregister_dai(&ads117x_dai); + return 0; +} + +static struct platform_driver ads117x_codec_driver = { + .driver = { + .name = "ads117x", + .owner = THIS_MODULE, + }, + + .probe = ads117x_platform_probe, + .remove = __devexit_p(ads117x_platform_remove), +}; + +static int __init ads117x_init(void) +{ + return platform_driver_register(&ads117x_codec_driver); +} +module_init(ads117x_init); + +static void __exit ads117x_exit(void) +{ + platform_driver_unregister(&ads117x_codec_driver); } module_exit(ads117x_exit); -- cgit v0.10.2