linux-kernel - [PATCH 3.19.y-ckt 063/155] ASoC: tas2552: fix dBscale-min declaration

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Message-Id: <1447370309-357-64-git-send-email-kamal@canonical.com>
Date:	Thu, 12 Nov 2015 15:16:57 -0800
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Andreas Dannenberg <dannenberg@...com>,
	Mark Brown <broonie@...nel.org>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.19.y-ckt 063/155] ASoC: tas2552: fix dBscale-min declaration

3.19.8-ckt10 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andreas Dannenberg <dannenberg@...com>

commit e2600460bc3aa14ca1df86318a327cbbabedf9a8 upstream.

The minimum volume level for the TAS2552 (control register value 0x00)
is -7dB however the driver declares it as -0.07dB.

Running amixer before the patch reports:
dBscale-min=-0.07dB,step=1.00dB,mute=0

Running amixer with the patch applied reports:
dBscale-min=-7.00dB,step=1.00dB,mute=0

Signed-off-by: Andreas Dannenberg <dannenberg@...com>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 sound/soc/codecs/tas2552.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/tas2552.c b/sound/soc/codecs/tas2552.c
index 6c76015..8cca1be 100644
--- a/sound/soc/codecs/tas2552.c
+++ b/sound/soc/codecs/tas2552.c
@@ -333,7 +333,7 @@ static struct snd_soc_dai_driver tas2552_dai[] = {
 /*
  * DAC digital volumes. From -7 to 24 dB in 1 dB steps
  */
-static DECLARE_TLV_DB_SCALE(dac_tlv, -7, 100, 0);
+static DECLARE_TLV_DB_SCALE(dac_tlv, -700, 100, 0);
 
 static const struct snd_kcontrol_new tas2552_snd_controls[] = {
 	SOC_SINGLE_TLV("Speaker Driver Playback Volume",
-- 
1.9.1

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