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ASoC: fsl-asoc-card: Add slot_width setting for cpu-dai 

ESAI may need to use fixed slot width to comply with external
CODEC. So this set_tdm_slot() call will allow the ESAI driver
to override its default dynamic slot width policy.

Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
hifive-unleashed-5.1
Nicolin Chen 2014-10-24 16:48:13 -07:00 committed by Mark Brown
parent 41282920aa
commit cb3fc1ff46
1 changed files with 12 additions and 0 deletions
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12
sound/soc/fsl/fsl-asoc-card.c
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@ -51,6 +51,7 @@ struct codec_priv {
* @sysclk_freq[2]: SYSCLK rates for set_sysclk()
* @sysclk_dir[2]: SYSCLK directions for set_sysclk()
* @sysclk_id[2]: SYSCLK ids for set_sysclk()
* @slot_width: Slot width of each frame
*
* Note: [1] for tx and [0] for rx
*/
@ -58,6 +59,7 @@ struct cpu_priv {
unsigned long sysclk_freq[2];
u32 sysclk_dir[2];
u32 sysclk_id[2];
u32 slot_width;
};
/**
@ -142,6 +144,15 @@ static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,
return ret;
}
if (cpu_priv->slot_width) {
ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2,
cpu_priv->slot_width);
if (ret) {
dev_err(dev, "failed to set TDM slot for cpu dai\n");
return ret;
}
}
return 0;
}
@ -453,6 +464,7 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
priv->cpu_priv.sysclk_freq[RX] = priv->codec_priv.mclk_freq;
priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_OUT;
priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_OUT;
priv->cpu_priv.slot_width = 32;
priv->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
} else if (of_device_is_compatible(np, "fsl,imx-audio-sgtl5000")) {
priv->codec_priv.mclk_id = SGTL5000_SYSCLK;