target/linux/layerscape/patches-5.4/801-audio-0001-Revert-ASoC-fsl_sai-Fix-noise-when-using-EDMA.patch

From cf07127ea019b78f7ea5e009d494e2bd0bd475fa Mon Sep 17 00:00:00 2001
From: Leonard Crestez <leonard.crestez@nxp.com>
Date: Thu, 3 Oct 2019 20:44:56 +0300
Subject: [PATCH] Revert "ASoC: fsl_sai: Fix noise when using EDMA"

This reverts commit e75f4940e8ad0dd76527302a10c06b58bf7eb590.
---
 sound/soc/fsl/fsl_sai.c | 15 ---------------
 sound/soc/fsl/fsl_sai.h |  1 -
 2 files changed, 16 deletions(-)

--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -629,16 +629,6 @@ static int fsl_sai_startup(struct snd_pc
 			   FSL_SAI_CR3_TRCE_MASK,
 			   FSL_SAI_CR3_TRCE);
 
-	/*
-	 * EDMA controller needs period size to be a multiple of
-	 * tx/rx maxburst
-	 */
-	if (sai->soc_data->use_edma)
-		snd_pcm_hw_constraint_step(substream->runtime, 0,
-					   SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
-					   tx ? sai->dma_params_tx.maxburst :
-					   sai->dma_params_rx.maxburst);
-
 	ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
 			SNDRV_PCM_HW_PARAM_RATE, &fsl_sai_rate_constraints);
 
@@ -1053,35 +1043,30 @@ static int fsl_sai_remove(struct platfor
 
 static const struct fsl_sai_soc_data fsl_sai_vf610_data = {
 	.use_imx_pcm = false,
-	.use_edma = false,
 	.fifo_depth = 32,
 	.reg_offset = 0,
 };
 
 static const struct fsl_sai_soc_data fsl_sai_imx6sx_data = {
 	.use_imx_pcm = true,
-	.use_edma = false,
 	.fifo_depth = 32,
 	.reg_offset = 0,
 };
 
 static const struct fsl_sai_soc_data fsl_sai_imx7ulp_data = {
 	.use_imx_pcm = true,
-	.use_edma = false,
 	.fifo_depth = 16,
 	.reg_offset = 8,
 };
 
 static const struct fsl_sai_soc_data fsl_sai_imx8mq_data = {
 	.use_imx_pcm = true,
-	.use_edma = false,
 	.fifo_depth = 128,
 	.reg_offset = 8,
 };
 
 static const struct fsl_sai_soc_data fsl_sai_imx8qm_data = {
 	.use_imx_pcm = true,
-	.use_edma = true,
 	.fifo_depth = 64,
 	.reg_offset = 0,
 };
--- a/sound/soc/fsl/fsl_sai.h
+++ b/sound/soc/fsl/fsl_sai.h
@@ -157,7 +157,6 @@
 
 struct fsl_sai_soc_data {
 	bool use_imx_pcm;
-	bool use_edma;
 	unsigned int fifo_depth;
 	unsigned int reg_offset;
 };