linux-kernel - [PATCH 3.16.y-ckt 119/128] ASoC: arizona: Fix bclk for sample rates that are multiple of 4kHz

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Message-Id: <1453672883-2708-120-git-send-email-luis.henriques@canonical.com>
Date:	Sun, 24 Jan 2016 22:01:14 +0000
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Nikesh Oswal <Nikesh.Oswal@...rus.com>,
	Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>,
	Mark Brown <broonie@...nel.org>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 119/128] ASoC: arizona: Fix bclk for sample rates that are multiple of 4kHz

3.16.7-ckt23 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Nikesh Oswal <Nikesh.Oswal@...rus.com>

commit e73694d871867cae8471d2350ce89acb38bc2b63 upstream.

For a sample rate of 12kHz the bclk was taken from the 44.1kHz table as
we test for a multiple of 8kHz. This patch fixes this issue by testing
for multiples of 4kHz instead.

Signed-off-by: Nikesh Oswal <Nikesh.Oswal@...rus.com>
Signed-off-by: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
[ luis: backported to 3.16: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 sound/soc/codecs/arizona.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index 29e198f57d4c..131fc593a4e8 100644
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -1188,7 +1188,7 @@ static int arizona_hw_params(struct snd_pcm_substream *substream,
 	int chan_limit = arizona->pdata.max_channels_clocked[dai->id - 1];
 	int bclk, lrclk, wl, frame, bclk_target;
 
-	if (params_rate(params) % 8000)
+	if (params_rate(params) % 4000)
 		rates = &arizona_44k1_bclk_rates[0];
 	else
 		rates = &arizona_48k_bclk_rates[0];