Commit be681a82 authored by Bo Shen's avatar Bo Shen Committed by Mark Brown
Browse files

ASoC: atmel-ssc-dai: register dai and pcm directly 



change the method for register dai and pcm
  - let the atmel-ssc-dai no longer as a standalone platform device
  - remap ssc and then register dai directly
  - register pcm from dai directly
  - modify the code which related with this change

Signed-off-by: default avatarBo Shen <voice.shen@atmel.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 099343c6

sound/soc/atmel/atmel-pcm.c

+6 −17
Original line number Diff line number Diff line
@@ -473,28 +473,17 @@ static struct snd_soc_platform_driver atmel_soc_platform = { 
	.resume		= atmel_pcm_resume,

};



static int __devinit atmel_soc_platform_probe(struct platform_device *pdev)

int atmel_pcm_platform_register(struct device *dev)

{

	return snd_soc_register_platform(&pdev->dev, &atmel_soc_platform);

	return snd_soc_register_platform(dev, &atmel_soc_platform);

}

EXPORT_SYMBOL(atmel_pcm_platform_register);



static int __devexit atmel_soc_platform_remove(struct platform_device *pdev)

void atmel_pcm_platform_unregister(struct device *dev)

{

	snd_soc_unregister_platform(&pdev->dev);

	return 0;

	snd_soc_unregister_platform(dev);

}



static struct platform_driver atmel_pcm_driver = {

	.driver = {

			.name = "atmel-pcm-audio",

			.owner = THIS_MODULE,

	},



	.probe = atmel_soc_platform_probe,

	.remove = __devexit_p(atmel_soc_platform_remove),

};



module_platform_driver(atmel_pcm_driver);

EXPORT_SYMBOL(atmel_pcm_platform_unregister);



MODULE_AUTHOR("Sedji Gaouaou <sedji.gaouaou@atmel.com>");

MODULE_DESCRIPTION("Atmel PCM module");

sound/soc/atmel/atmel-pcm.h

+3 −0
Original line number Diff line number Diff line
@@ -80,4 +80,7 @@ struct atmel_pcm_dma_params { 
#define ssc_readx(base, reg)            (__raw_readl((base) + (reg)))

#define ssc_writex(base, reg, value)    __raw_writel((value), (base) + (reg))



int atmel_pcm_platform_register(struct device *dev);

void atmel_pcm_platform_unregister(struct device *dev);



#endif /* _ATMEL_PCM_H */

sound/soc/atmel/atmel_ssc_dai.c

+39 −118
Original line number Diff line number Diff line
@@ -48,11 +48,7 @@ 
#include "atmel_ssc_dai.h"





#if defined(CONFIG_ARCH_AT91SAM9260) || defined(CONFIG_ARCH_AT91SAM9G20)

#define NUM_SSC_DEVICES		1

#else

#define NUM_SSC_DEVICES		3

#endif



/*

 * SSC PDC registers required by the PCM DMA engine.
@@ -107,7 +103,6 @@ static struct atmel_pcm_dma_params ssc_dma_params[NUM_SSC_DEVICES][2] = { 
	.pdc		= &pdc_rx_reg,

	.mask		= &ssc_rx_mask,

	} },

#if NUM_SSC_DEVICES == 3

	{{

	.name		= "SSC1 PCM out",

	.pdc		= &pdc_tx_reg,
@@ -128,7 +123,6 @@ static struct atmel_pcm_dma_params ssc_dma_params[NUM_SSC_DEVICES][2] = { 
	.pdc		= &pdc_rx_reg,

	.mask		= &ssc_rx_mask,

	} },

#endif

};
@@ -139,7 +133,6 @@ static struct atmel_ssc_info ssc_info[NUM_SSC_DEVICES] = { 
	.dir_mask	= SSC_DIR_MASK_UNUSED,

	.initialized	= 0,

	},

#if NUM_SSC_DEVICES == 3

	{

	.name		= "ssc1",

	.lock		= __SPIN_LOCK_UNLOCKED(ssc_info[1].lock),
@@ -152,7 +145,6 @@ static struct atmel_ssc_info ssc_info[NUM_SSC_DEVICES] = { 
	.dir_mask	= SSC_DIR_MASK_UNUSED,

	.initialized	= 0,

	},

#endif

};
@@ -690,27 +682,9 @@ static int atmel_ssc_resume(struct snd_soc_dai *cpu_dai) 
static int atmel_ssc_probe(struct snd_soc_dai *dai)

{

	struct atmel_ssc_info *ssc_p = &ssc_info[dai->id];

	int ret = 0;



	snd_soc_dai_set_drvdata(dai, ssc_p);



	/*

	 * Request SSC device

	 */

	ssc_p->ssc = ssc_request(dai->id);

	if (IS_ERR(ssc_p->ssc)) {

		printk(KERN_ERR "ASoC: Failed to request SSC %d\n", dai->id);

		ret = PTR_ERR(ssc_p->ssc);

	}



	return ret;

}



static int atmel_ssc_remove(struct snd_soc_dai *dai)

{

	struct atmel_ssc_info *ssc_p = snd_soc_dai_get_drvdata(dai);



	ssc_free(ssc_p->ssc);

	return 0;

}
@@ -728,11 +702,8 @@ static const struct snd_soc_dai_ops atmel_ssc_dai_ops = { 
	.set_clkdiv	= atmel_ssc_set_dai_clkdiv,

};



static struct snd_soc_dai_driver atmel_ssc_dai[NUM_SSC_DEVICES] = {

	{

		.name = "atmel-ssc-dai.0",

static struct snd_soc_dai_driver atmel_ssc_dai = {

		.probe = atmel_ssc_probe,

		.remove = atmel_ssc_remove,

		.suspend = atmel_ssc_suspend,

		.resume = atmel_ssc_resume,

		.playback = {
@@ -746,69 +717,37 @@ static struct snd_soc_dai_driver atmel_ssc_dai[NUM_SSC_DEVICES] = { 
			.rates = ATMEL_SSC_RATES,

			.formats = ATMEL_SSC_FORMATS,},

		.ops = &atmel_ssc_dai_ops,

	},

#if NUM_SSC_DEVICES == 3

	{

		.name = "atmel-ssc-dai.1",

		.probe = atmel_ssc_probe,

		.remove = atmel_ssc_remove,

		.suspend = atmel_ssc_suspend,

		.resume = atmel_ssc_resume,

		.playback = {

			.channels_min = 1,

			.channels_max = 2,

			.rates = ATMEL_SSC_RATES,

			.formats = ATMEL_SSC_FORMATS,},

		.capture = {

			.channels_min = 1,

			.channels_max = 2,

			.rates = ATMEL_SSC_RATES,

			.formats = ATMEL_SSC_FORMATS,},

		.ops = &atmel_ssc_dai_ops,

	},

	{

		.name = "atmel-ssc-dai.2",

		.probe = atmel_ssc_probe,

		.remove = atmel_ssc_remove,

		.suspend = atmel_ssc_suspend,

		.resume = atmel_ssc_resume,

		.playback = {

			.channels_min = 1,

			.channels_max = 2,

			.rates = ATMEL_SSC_RATES,

			.formats = ATMEL_SSC_FORMATS,},

		.capture = {

			.channels_min = 1,

			.channels_max = 2,

			.rates = ATMEL_SSC_RATES,

			.formats = ATMEL_SSC_FORMATS,},

		.ops = &atmel_ssc_dai_ops,

	},

#endif

};



static __devinit int asoc_ssc_probe(struct platform_device *pdev)

static int asoc_ssc_init(struct device *dev)

{

	BUG_ON(pdev->id < 0);

	BUG_ON(pdev->id >= ARRAY_SIZE(atmel_ssc_dai));

	return snd_soc_register_dai(&pdev->dev, &atmel_ssc_dai[pdev->id]);

	int ret;



	ret = snd_soc_register_dai(dev, &atmel_ssc_dai);

	if (ret) {

		dev_err(dev, "Could not register DAI: %d\n", ret);

		goto err;

	}



static int __devexit asoc_ssc_remove(struct platform_device *pdev)

{

	snd_soc_unregister_dai(&pdev->dev);

	ret = atmel_pcm_platform_register(dev);

	if (ret) {

		dev_err(dev, "Could not register PCM: %d\n", ret);

		goto err_unregister_dai;

	};



	return 0;

}



static struct platform_driver asoc_ssc_driver = {

	.driver = {

			.name = "atmel-ssc-dai",

			.owner = THIS_MODULE,

	},

err_unregister_dai:

	snd_soc_unregister_dai(dev);

err:

	return ret;

}



	.probe = asoc_ssc_probe,

	.remove = __devexit_p(asoc_ssc_remove),

};

static void asoc_ssc_exit(struct device *dev)

{

	atmel_pcm_platform_unregister(dev);

	snd_soc_unregister_dai(dev);

}



/**

 * atmel_ssc_set_audio - Allocate the specified SSC for audio use.
@@ -816,50 +755,32 @@ static struct platform_driver asoc_ssc_driver = { 
int atmel_ssc_set_audio(int ssc_id)

{

	struct ssc_device *ssc;

	static struct platform_device *dma_pdev;

	struct platform_device *ssc_pdev;

	int ret;



	if (ssc_id < 0 || ssc_id >= ARRAY_SIZE(atmel_ssc_dai))

		return -EINVAL;



	/* Allocate a dummy device for DMA if we don't have one already */

	if (!dma_pdev) {

		dma_pdev = platform_device_alloc("atmel-pcm-audio", -1);

		if (!dma_pdev)

			return -ENOMEM;



		ret = platform_device_add(dma_pdev);

		if (ret < 0) {

			platform_device_put(dma_pdev);

			dma_pdev = NULL;

			return ret;

		}

	}



	ssc_pdev = platform_device_alloc("atmel-ssc-dai", ssc_id);

	if (!ssc_pdev)

		return -ENOMEM;



	/* If we can grab the SSC briefly to parent the DAI device off it */

	ssc = ssc_request(ssc_id);

	if (IS_ERR(ssc))

		pr_warn("Unable to parent ASoC SSC DAI on SSC: %ld\n",

	if (IS_ERR(ssc)) {

		pr_err("Unable to parent ASoC SSC DAI on SSC: %ld\n",

			PTR_ERR(ssc));

	else {

		ssc_pdev->dev.parent = &(ssc->pdev->dev);

		ssc_free(ssc);

		return PTR_ERR(ssc);

	} else {

		ssc_info[ssc_id].ssc = ssc;

	}



	ret = platform_device_add(ssc_pdev);

	if (ret < 0)

		platform_device_put(ssc_pdev);

	ret = asoc_ssc_init(&ssc->pdev->dev);



	return ret;

}

EXPORT_SYMBOL_GPL(atmel_ssc_set_audio);



module_platform_driver(asoc_ssc_driver);

void atmel_ssc_put_audio(int ssc_id)

{

	struct ssc_device *ssc = ssc_info[ssc_id].ssc;



	ssc_free(ssc);

	asoc_ssc_exit(&ssc->pdev->dev);

}

EXPORT_SYMBOL_GPL(atmel_ssc_put_audio);



/* Module information */

MODULE_AUTHOR("Sedji Gaouaou, sedji.gaouaou@atmel.com, www.atmel.com");

sound/soc/atmel/atmel_ssc_dai.h

+2 −1
Original line number Diff line number Diff line
@@ -117,6 +117,7 @@ struct atmel_ssc_info { 
	struct atmel_ssc_state ssc_state;

};



int atmel_ssc_set_audio(int ssc);

int atmel_ssc_set_audio(int ssc_id);

void atmel_ssc_put_audio(int ssc_id);



#endif /* _AT91_SSC_DAI_H */

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