Unverified Commit 1760df5b authored by Chancel Liu's avatar Chancel Liu Committed by Mark Brown
Browse files

ASoC: fsl_xcvr: Add constraints of period size while using eDMA 



eDMA on i.MX93 platform requires the period size to be multiple of
maxburst.

Signed-off-by: default avatarChancel Liu <chancel.liu@nxp.com>
Acked-by: default avatarShengjiu Wang <shengjiu.wang@gmail.com>
Link: https://lore.kernel.org/r/20230104023953.2973362-4-chancel.liu@nxp.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent e240b932

sound/soc/fsl/fsl_xcvr.c

+12 −0
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ 
struct fsl_xcvr_soc_data {

	const char *fw_name;

	bool spdif_only;

	bool use_edma;

};



struct fsl_xcvr {
@@ -538,6 +539,16 @@ static int fsl_xcvr_startup(struct snd_pcm_substream *substream, 
		return -EBUSY;

	}



	/*

	 * EDMA controller needs period size to be a multiple of

	 * tx/rx maxburst

	 */

	if (xcvr->soc_data->use_edma)

		snd_pcm_hw_constraint_step(substream->runtime, 0,

					   SNDRV_PCM_HW_PARAM_PERIOD_SIZE,

					   tx ? xcvr->dma_prms_tx.maxburst :

					   xcvr->dma_prms_rx.maxburst);



	switch (xcvr->mode) {

	case FSL_XCVR_MODE_SPDIF:

	case FSL_XCVR_MODE_ARC:
@@ -1207,6 +1218,7 @@ static const struct fsl_xcvr_soc_data fsl_xcvr_imx8mp_data = { 


static const struct fsl_xcvr_soc_data fsl_xcvr_imx93_data = {

	.spdif_only = true,

	.use_edma = true,

};



static const struct of_device_id fsl_xcvr_dt_ids[] = {