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From 0ab3461b68ccc1d4ffb37dbc7f2e57adc8aed0fb Mon Sep 17 00:00:00 2001
From: Zidan Wang <zidan.wang@freescale.com>
Date: Fri, 10 Apr 2015 09:52:36 +0800
Subject: [PATCH] MLK-10611-1 ASoC: fsl-sai: Just one device can
playback(captrue) when using the same SAI
Just one device can playback(captrue) when using the same SAI.
Signed-off-by: Zidan Wang <zidan.wang@freescale.com>
(cherry picked from commit 7981a488c4da440db21f0544b519b44636a0cabb)
---
sound/soc/fsl/fsl_sai.c | 10 ++++++++++
sound/soc/fsl/fsl_sai.h | 1 +
2 files changed, 11 insertions(+)
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -605,6 +605,11 @@ static int fsl_sai_startup(struct snd_pc
bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
int ret;
+ if (sai->is_stream_opened[tx])
+ return -EBUSY;
+ else
+ sai->is_stream_opened[tx] = true;
+
regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE,
FSL_SAI_CR3_TRCE);
@@ -621,6 +626,11 @@ static void fsl_sai_shutdown(struct snd_
bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE, 0);
+
+ if (sai->is_stream_opened[tx]) {
+ regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE, 0);
+ sai->is_stream_opened[tx] = false;
+ }
}
static const struct snd_soc_dai_ops fsl_sai_pcm_dai_ops = {
--- a/sound/soc/fsl/fsl_sai.h
+++ b/sound/soc/fsl/fsl_sai.h
@@ -137,6 +137,7 @@ struct fsl_sai {
bool is_dsp_mode;
bool sai_on_imx;
bool synchronous[2];
+ bool is_stream_opened[2];
unsigned int mclk_id[2];
unsigned int mclk_streams;
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