[PATCH] ASoC: rsnd: Reinitialize bit clock inversion flag for every format setting

[Junya Monden]

Unlike other format-related DAI parameters, rdai->bit_clk_inv flag
is not properly re-initialized when setting format for new stream
processing. The inversion, if requested, is then applied not to default,
but to a previous value, which leads to SCKP bit in SSICR register being
set incorrectly.
Fix this by re-setting the flag to its initial value, determined by format.

Fixes: 1a7889ca8aba3 ("ASoC: rsnd: fixup SND_SOC_DAIFMT_xB_xF behavior")
Cc: Andrew Gabbasov <andrew_gabbasov@xxxxxxxxxx>
Cc: Jiada Wang <jiada_wang@xxxxxxxxxx>
Cc: Timo Wischer <twischer@xxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # v3.17+
Signed-off-by: Junya Monden <jmonden@xxxxxxxxxxxxxx>
Signed-off-by: Eugeniu Rosca <erosca@xxxxxxxxxxxxxx>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20191016124255.7442-1-erosca@xxxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
 sound/soc/sh/rcar/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index bda5b958d0dc..e9596c2096cd 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -761,6 +761,7 @@ static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 	}
 
 	/* set format */
+	rdai->bit_clk_inv = 0;
 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 	case SND_SOC_DAIFMT_I2S:
 		rdai->sys_delay = 0;
-- 
2.20.1