[linux-2.6-block.git] / sound / soc / codecs / ads117x.c

/*
 * ads117x.c  --  Driver for ads1174/8 ADC chips
 *
 * Copyright 2009 ShotSpotter Inc.
 * Author: Graeme Gregory <gg@slimlogic.co.uk>
 *
 *  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 <linux/kernel.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/initval.h>
#include <sound/soc.h>

#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);

static int ads117x_probe(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	struct snd_soc_codec *codec;
	int ret;

	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);
	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");
		kfree(codec);
		return ret;
	}

	return 0;
}

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 __devinit int ads117x_platform_probe(struct platform_device *pdev)
{
	ads117x_dai.dev = &pdev->dev;
	return snd_soc_register_dai(&ads117x_dai);
}

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);

MODULE_DESCRIPTION("ASoC ads117x driver");
MODULE_AUTHOR("Graeme Gregory");
MODULE_LICENSE("GPL");
Commit	Line	Data
2dcf9fb9 GG	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>
5a0e3ad6	14	#include <linux/slab.h>
2dcf9fb9 GG	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	#include "ads117x.h"
	23
	24	#define ADS117X_RATES (SNDRV_PCM_RATE_8000_48000)
	25
	26	#define ADS117X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
	27
	28	struct snd_soc_dai ads117x_dai = {
	29	/* ADC */
	30	.name = "ADS117X ADC",
	31	.id = 1,
	32	.capture = {
	33	.stream_name = "Capture",
	34	.channels_min = 1,
	35	.channels_max = 32,
	36	.rates = ADS117X_RATES,
	37	.formats = ADS117X_FORMATS,},
	38	};
	39	EXPORT_SYMBOL_GPL(ads117x_dai);
	40
2dcf9fb9 GG	41	static int ads117x_probe(struct platform_device *pdev)
	42	{
	43	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	44	struct snd_soc_codec *codec;
	45	int ret;
	46
2dcf9fb9 GG	47	codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
	48	if (codec == NULL)
	49	return -ENOMEM;
	50
	51	socdev->card->codec = codec;
	52	mutex_init(&codec->mutex);
	53	INIT_LIST_HEAD(&codec->dapm_widgets);
	54	INIT_LIST_HEAD(&codec->dapm_paths);
f3d0e82f MB	55	codec->name = "ADS117X";
	56	codec->owner = THIS_MODULE;
	57	codec->dai = &ads117x_dai;
	58	codec->num_dai = 1;
2dcf9fb9	59
f3d0e82f MB	60	/* register pcms */
	61	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	62	if (ret < 0) {
	63	printk(KERN_ERR "ads117x: failed to create pcms\n");
2dcf9fb9	64	kfree(codec);
f3d0e82f MB	65	return ret;
f3d0e82f MB	66	}
2dcf9fb9	67
f3d0e82f	68	return 0;
2dcf9fb9 GG	69	}
	70
	71	static int ads117x_remove(struct platform_device *pdev)
	72	{
	73	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	74	struct snd_soc_codec *codec = socdev->card->codec;
	75
	76	snd_soc_free_pcms(socdev);
	77	kfree(codec);
	78
	79	return 0;
	80	}
	81
	82	struct snd_soc_codec_device soc_codec_dev_ads117x = {
	83	.probe = ads117x_probe,
	84	.remove = ads117x_remove,
	85	};
	86	EXPORT_SYMBOL_GPL(soc_codec_dev_ads117x);
	87
f3d0e82f	88	static __devinit int ads117x_platform_probe(struct platform_device *pdev)
2dcf9fb9	89	{
f3d0e82f	90	ads117x_dai.dev = &pdev->dev;
2dcf9fb9 GG	91	return snd_soc_register_dai(&ads117x_dai);
2dcf9fb9 GG	92	}
2dcf9fb9	93
f3d0e82f	94	static int __devexit ads117x_platform_remove(struct platform_device *pdev)
2dcf9fb9 GG	95	{
2dcf9fb9 GG	96	snd_soc_unregister_dai(&ads117x_dai);
f3d0e82f MB	97	return 0;
	98	}
	99
	100	static struct platform_driver ads117x_codec_driver = {
	101	.driver = {
	102	.name = "ads117x",
	103	.owner = THIS_MODULE,
	104	},
	105
	106	.probe = ads117x_platform_probe,
	107	.remove = __devexit_p(ads117x_platform_remove),
	108	};
	109
	110	static int __init ads117x_init(void)
	111	{
	112	return platform_driver_register(&ads117x_codec_driver);
	113	}
	114	module_init(ads117x_init);
	115
	116	static void __exit ads117x_exit(void)
	117	{
	118	platform_driver_unregister(&ads117x_codec_driver);
2dcf9fb9 GG	119	}
	120	module_exit(ads117x_exit);
	121
	122	MODULE_DESCRIPTION("ASoC ads117x driver");
	123	MODULE_AUTHOR("Graeme Gregory");
	124	MODULE_LICENSE("GPL");