linux-kernel - [PATCH 2/2] ASoC: tlv320aic3x: Clear BIT_CLK_MASTER and WORD_CLK

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Message-ID: <1319704722.2673.5.camel@phoenix>
Date:	Thu, 27 Oct 2011 16:38:42 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Vladimir Barinov <vbarinov@...eddedalley.com>,
	Liam Girdwood <lrg@...com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Jarkko Nikula <jarkko.nikula@...mer.com>,
	Peter Ujfalusi <peter.ujfalusi@...com>,
	alsa-devel@...a-project.org
Subject: [PATCH 2/2] ASoC: tlv320aic3x: Clear BIT_CLK_MASTER and
 WORD_CLK_MASTER bits for for slave mode

According to the datasheet:

Page0 / Register8: Audio Serial Data interface Control Register A
BIT 7: Bit Clock Directional Control
        0: Bit clock is an input (slave mode)
        1: Bit clock is an output (master mode)

BIT 6: Word Clock Directional Control
        0: Word clock is an input (slave mode)
        1: Word clock is an output (master mode)

Current code sets BIT_CLK_MASTER and WORD_CLK_MASTER bits for master mode,
but does not clear these bits for slave mode.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 sound/soc/codecs/tlv320aic3x.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
index a77f6ea..14cb553 100644
--- a/sound/soc/codecs/tlv320aic3x.c
+++ b/sound/soc/codecs/tlv320aic3x.c
@@ -1021,6 +1021,7 @@ static int aic3x_set_dai_fmt(struct snd_soc_dai *codec_dai,
 		break;
 	case SND_SOC_DAIFMT_CBS_CFS:
 		aic3x->master = 0;
+		iface_areg &= ~(BIT_CLK_MASTER | WORD_CLK_MASTER);
 		break;
 	default:
 		return -EINVAL;
-- 
1.7.5.4



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