[PATCH v2 2/2] ASoC: fsl_ssi: call _fsl_ssi_set_dai_fmt() just once in AC'97 mode

From: Maciej S. Szmigiero
Date: Tue Nov 21 2017 - 18:55:24 EST

In AC'97 mode we configure and start SSI RX / TX on probe path via
a call to _fsl_ssi_set_dai_fmt() function.
We don't need to call this function again later and in fact don't want to
do it since this function temporarily sets STCR, SRCR and SCR to some
intermediate values.

Signed-off-by: Maciej S. Szmigiero <mail@xxxxxxxxxxxxxxxxxxxxx>
Changes from v1: The SACCST setup code was split out into a separate

sound/soc/fsl/fsl_ssi.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index 375aaaf6080d..70df6bf832df 100644
--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -1116,6 +1116,9 @@ static int fsl_ssi_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt)
struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(cpu_dai);

+ if (fsl_ssi_is_ac97(ssi_private))
+ return 0;
return _fsl_ssi_set_dai_fmt(cpu_dai->dev, ssi_private, fmt);