Unverified Commit 63d1a348 authored by Viorel Suman's avatar Viorel Suman Committed by Mark Brown
Browse files

ASoC: fsl_sai: Implement set_bclk_ratio 



This is to allow machine drivers to set a certain bitclk rate
which might not be exactly rate * frame size.

Cc: NXP Linux Team <linux-imx@nxp.com>
Signed-off-by: default avatarViorel Suman <viorel.suman@nxp.com>
Signed-off-by: default avatarDaniel Baluta <daniel.baluta@nxp.com>
Acked-by: default avatarNicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/20190830215910.31590-1-daniel.baluta@nxp.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent d1c9e44a

sound/soc/fsl/fsl_sai.c

+19 −2
Original line number Diff line number Diff line
@@ -137,6 +137,16 @@ static int fsl_sai_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask, 
	return 0;

}



static int fsl_sai_set_dai_bclk_ratio(struct snd_soc_dai *dai,

				      unsigned int ratio)

{

	struct fsl_sai *sai = snd_soc_dai_get_drvdata(dai);



	sai->bclk_ratio = ratio;



	return 0;

}



static int fsl_sai_set_dai_sysclk_tr(struct snd_soc_dai *cpu_dai,

		int clk_id, unsigned int freq, int fsl_dir)

{
@@ -423,8 +433,14 @@ static int fsl_sai_hw_params(struct snd_pcm_substream *substream, 
		slot_width = sai->slot_width;



	if (!sai->is_slave_mode) {

		if (sai->bclk_ratio)

			ret = fsl_sai_set_bclk(cpu_dai, tx,

					       sai->bclk_ratio *

					       params_rate(params));

		else

			ret = fsl_sai_set_bclk(cpu_dai, tx,

				slots * slot_width * params_rate(params));

					       slots * slot_width *

					       params_rate(params));

		if (ret)

			return ret;
@@ -630,6 +646,7 @@ static void fsl_sai_shutdown(struct snd_pcm_substream *substream, 
}



static const struct snd_soc_dai_ops fsl_sai_pcm_dai_ops = {

	.set_bclk_ratio	= fsl_sai_set_dai_bclk_ratio,

	.set_sysclk	= fsl_sai_set_dai_sysclk,

	.set_fmt	= fsl_sai_set_dai_fmt,

	.set_tdm_slot	= fsl_sai_set_dai_tdm_slot,

sound/soc/fsl/fsl_sai.h

+1 −0
Original line number Diff line number Diff line
@@ -176,6 +176,7 @@ struct fsl_sai { 
	unsigned int mclk_streams;

	unsigned int slots;

	unsigned int slot_width;

	unsigned int bclk_ratio;



	const struct fsl_sai_soc_data *soc_data;

	struct snd_dmaengine_dai_dma_data dma_params_rx;

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