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Commit 0b61d2b9 authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Liam Girdwood
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ASoC: tlv320dac33: Manage a pointer for snd_pcm_substream in private structure 



As a preparation for supporting codec to be turned off,
when we are in BIAS_STANDBY.

The substream must be easily available in other places than
pcm_* callbacks.

Manage a pointer in _startup, and _shutdown for this.

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
parent 239fe55c

sound/soc/codecs/tlv320dac33.c

+28 −0
Original line number Original line Diff line number Diff line
@@ -91,6 +91,7 @@ struct tlv320dac33_priv { 
	struct work_struct work;

	struct work_struct work;

	struct snd_soc_codec codec;

	struct snd_soc_codec codec;

	struct regulator_bulk_data supplies[DAC33_NUM_SUPPLIES];

	struct regulator_bulk_data supplies[DAC33_NUM_SUPPLIES];

	struct snd_pcm_substream *substream;

	int power_gpio;

	int power_gpio;

	int chip_power;

	int chip_power;

	int irq;

	int irq;
@@ -720,6 +721,31 @@ static void dac33_oscwait(struct snd_soc_codec *codec) 
			"internal oscillator calibration failed\n");

			"internal oscillator calibration failed\n");

}

}





static int dac33_startup(struct snd_pcm_substream *substream,

			   struct snd_soc_dai *dai)

{

	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	struct snd_soc_device *socdev = rtd->socdev;

	struct snd_soc_codec *codec = socdev->card->codec;

	struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);



	/* Stream started, save the substream pointer */

	dac33->substream = substream;



	return 0;

}



static void dac33_shutdown(struct snd_pcm_substream *substream,

			     struct snd_soc_dai *dai)

{

	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	struct snd_soc_device *socdev = rtd->socdev;

	struct snd_soc_codec *codec = socdev->card->codec;

	struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);



	dac33->substream = NULL;

}



static int dac33_hw_params(struct snd_pcm_substream *substream,

static int dac33_hw_params(struct snd_pcm_substream *substream,

			   struct snd_pcm_hw_params *params,

			   struct snd_pcm_hw_params *params,

			   struct snd_soc_dai *dai)

			   struct snd_soc_dai *dai)
@@ -1367,6 +1393,8 @@ EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320dac33); 
#define DAC33_FORMATS	SNDRV_PCM_FMTBIT_S16_LE

#define DAC33_FORMATS	SNDRV_PCM_FMTBIT_S16_LE





static struct snd_soc_dai_ops dac33_dai_ops = {

static struct snd_soc_dai_ops dac33_dai_ops = {

	.startup	= dac33_startup,

	.shutdown	= dac33_shutdown,

	.hw_params	= dac33_hw_params,

	.hw_params	= dac33_hw_params,

	.prepare	= dac33_pcm_prepare,

	.prepare	= dac33_pcm_prepare,

	.trigger	= dac33_pcm_trigger,

	.trigger	= dac33_pcm_trigger,