sound/soc/msm/msm-dai-fe.c

/* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */


#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>

static struct snd_soc_dai_ops msm_fe_dai_ops = {};

/* Conventional and unconventional sample rate supported */
static unsigned int supported_sample_rates[] = {
	8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000
};

static struct snd_pcm_hw_constraint_list constraints_sample_rates = {
	.count = ARRAY_SIZE(supported_sample_rates),
	.list = supported_sample_rates,
	.mask = 0,
};

static int multimedia_startup(struct snd_pcm_substream *substream,
	struct snd_soc_dai *dai)
{
	snd_pcm_hw_constraint_list(substream->runtime, 0,
		SNDRV_PCM_HW_PARAM_RATE,
		&constraints_sample_rates);

	return 0;
}

static struct snd_soc_dai_ops msm_fe_Multimedia_dai_ops = {
	.startup	= multimedia_startup,
};

static struct snd_soc_dai_driver msm_fe_dais[] = {
	{
		.playback = {
			.stream_name = "Multimedia1 Playback",
			.rates = SNDRV_PCM_RATE_8000_48000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =     8000,
			.rate_max =	48000,
		},
		.capture = {
			.stream_name = "Multimedia1 Capture",
			.rates = SNDRV_PCM_RATE_8000_48000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =     8000,
			.rate_max =	48000,
		},
		.ops = &msm_fe_dai_ops,
		.name = "MultiMedia1",
	},
	{
		.playback = {
			.stream_name = "Multimedia2 Playback",
			.rates = SNDRV_PCM_RATE_8000_48000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =     8000,
			.rate_max =	48000,
		},
		.capture = {
			.stream_name = "Multimedia2 Capture",
			.rates = SNDRV_PCM_RATE_8000_48000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =     8000,
			.rate_max =	48000,
		},
		.ops = &msm_fe_dai_ops,
		.name = "MultiMedia2",
	},
	{
		.playback = {
			.stream_name = "Voice Playback",
			.rates = SNDRV_PCM_RATE_8000_48000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =     8000,
			.rate_max =     48000,
		},
		.capture = {
			.stream_name = "Voice Capture",
			.rates = SNDRV_PCM_RATE_8000_48000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =     8000,
			.rate_max =     48000,
		},
		.ops = &msm_fe_dai_ops,
		.name = "CS-VOICE",
	},
	{
		.playback = {
			.stream_name = "VoIP Playback",
			.rates = SNDRV_PCM_RATE_8000_48000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE |
					SNDRV_PCM_FMTBIT_SPECIAL,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =	8000,
			.rate_max = 48000,
		},
		.capture = {
			.stream_name = "VoIP Capture",
			.rates = SNDRV_PCM_RATE_8000_48000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE |
					SNDRV_PCM_FMTBIT_SPECIAL,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =	8000,
			.rate_max = 48000,
		},
		.ops = &msm_fe_dai_ops,
		.name = "VoIP",
	},
	{
		.playback = {
			.stream_name = "MultiMedia3 Playback",
			.rates = (SNDRV_PCM_RATE_8000_48000 |
					SNDRV_PCM_RATE_KNOT),
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =	8000,
			.rate_max = 48000,
		},
		.ops = &msm_fe_Multimedia_dai_ops,
		.name = "MultiMedia3",
	},
	{
		.playback = {
			.stream_name = "MultiMedia4 Playback",
			.rates = (SNDRV_PCM_RATE_8000_48000 |
					SNDRV_PCM_RATE_KNOT),
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =	8000,
			.rate_max = 48000,
		},
		.ops = &msm_fe_Multimedia_dai_ops,
		.name = "MultiMedia4",
	},
	/* FE DAIs created for hostless operation purpose */
	{
		.playback = {
			.stream_name = "SLIMBUS0 Hostless Playback",
			.rates = SNDRV_PCM_RATE_8000_48000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =     8000,
			.rate_max =     48000,
		},
		.capture = {
			.stream_name = "SLIMBUS0 Hostless Capture",
			.rates = SNDRV_PCM_RATE_8000_48000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =     8000,
			.rate_max =     48000,
		},
		.ops = &msm_fe_dai_ops,
		.name = "SLIMBUS0_HOSTLESS",
	},
	{
		.playback = {
			.stream_name = "INT_FM Hostless Playback",
			.rates = SNDRV_PCM_RATE_8000_48000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =     8000,
			.rate_max =     48000,
		},
		.capture = {
			.stream_name = "INT_FM Hostless Capture",
			.rates = SNDRV_PCM_RATE_8000_48000,
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =     8000,
			.rate_max =     48000,
		},
		.ops = &msm_fe_dai_ops,
		.name = "INT_FM_HOSTLESS",
	},
	{
		.playback = {
			.stream_name = "AFE-PROXY Playback",
			.rates = (SNDRV_PCM_RATE_8000 |
				SNDRV_PCM_RATE_16000 |
				SNDRV_PCM_RATE_48000),
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =     8000,
			.rate_max =     48000,
		},
		.capture = {
			.stream_name = "AFE-PROXY Capture",
			.rates = (SNDRV_PCM_RATE_8000 |
				SNDRV_PCM_RATE_16000 |
				SNDRV_PCM_RATE_48000),
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
			.channels_min = 1,
			.channels_max = 2,
			.rate_min =     8000,
			.rate_max =     48000,
		},
		.ops = &msm_fe_dai_ops,
		.name = "AFE-PROXY",
	},
};

static __devinit int msm_fe_dai_dev_probe(struct platform_device *pdev)
{
	dev_dbg(&pdev->dev, "%s: dev name %s\n", __func__,
	dev_name(&pdev->dev));
	return snd_soc_register_dais(&pdev->dev, msm_fe_dais,
		ARRAY_SIZE(msm_fe_dais));
}

static __devexit int msm_fe_dai_dev_remove(struct platform_device *pdev)
{
	snd_soc_unregister_dai(&pdev->dev);
	return 0;
}

static struct platform_driver msm_fe_dai_driver = {
	.probe  = msm_fe_dai_dev_probe,
	.remove = msm_fe_dai_dev_remove,
	.driver = {
		.name = "msm-dai-fe",
		.owner = THIS_MODULE,
	},
};

static int __init msm_fe_dai_init(void)
{
	return platform_driver_register(&msm_fe_dai_driver);
}
module_init(msm_fe_dai_init);

static void __exit msm_fe_dai_exit(void)
{
	platform_driver_unregister(&msm_fe_dai_driver);
}
module_exit(msm_fe_dai_exit);

/* Module information */
MODULE_DESCRIPTION("MSM Frontend DAI driver");
MODULE_LICENSE("GPL v2");