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37 lines
1.4 KiB
Diff
37 lines
1.4 KiB
Diff
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From 96412158397ca0e41db1eb7cec4f51a2280d1bf1 Mon Sep 17 00:00:00 2001
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From: Mihai Serban <mihai.serban@nxp.com>
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Date: Thu, 27 Apr 2017 18:47:42 +0300
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Subject: [PATCH] MLK-14935: ASoC: fsl_sai: Fix mixing initialization data with
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actual audio samples
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When starting a playback the initialization data used to reduce underruns
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was send to the transmit data register after the DMA requests were enabled.
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This patch moves the initialization phase before enabling the DMA so the
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data is transmitted in correct order.
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Signed-off-by: Mihai Serban <mihai.serban@nxp.com>
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---
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sound/soc/fsl/fsl_sai.c | 5 ++---
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1 file changed, 2 insertions(+), 3 deletions(-)
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--- a/sound/soc/fsl/fsl_sai.c
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+++ b/sound/soc/fsl/fsl_sai.c
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@@ -594,15 +594,14 @@ static int fsl_sai_trigger(struct snd_pc
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case SNDRV_PCM_TRIGGER_START:
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case SNDRV_PCM_TRIGGER_RESUME:
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case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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- regmap_update_bits(sai->regmap, FSL_SAI_xCSR(tx),
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- FSL_SAI_CSR_FRDE, FSL_SAI_CSR_FRDE);
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-
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for (i = 0; tx && i < channels; i++)
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regmap_write(sai->regmap, FSL_SAI_TDR0, 0x0);
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if (tx)
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udelay(10);
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regmap_update_bits(sai->regmap, FSL_SAI_xCSR(tx),
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+ FSL_SAI_CSR_FRDE, FSL_SAI_CSR_FRDE);
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+ regmap_update_bits(sai->regmap, FSL_SAI_xCSR(tx),
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FSL_SAI_CSR_TERE, FSL_SAI_CSR_TERE);
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regmap_update_bits(sai->regmap, FSL_SAI_xCSR(tx),
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FSL_SAI_CSR_SE, FSL_SAI_CSR_SE);
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