linux-kernel - [alsa-devel] [PATCH 6/9] ASoC: da7210: bugfix for head phone volume control

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Date:	Wed, 12 Oct 2011 20:35:34 +0530
From:	Ashish Chavan <ashish.chavan@...tcummins.com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>, <lrg@...com>,
	alsa-devel <alsa-devel@...a-project.org>
CC:	David Dajun Chen <david.chen@...semi.com>,
	<kuninori.morimoto.gx@...esas.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: [alsa-devel] [PATCH 6/9] ASoC: da7210: bugfix for head phone
 volume control

This patch takes care of reserved bits of headphone volume
register by using correct volume range.

Tested on Samsung SMDK6410 board with DA7210 evaluation board.

Signed-off-by: Ashish Chavan <ashish.chavan@...tcummins.com>
Signed-off-by: David Dajun Chen <dchen@...semi.com>
---
 sound/soc/codecs/da7210.c |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/sound/soc/codecs/da7210.c b/sound/soc/codecs/da7210.c
index 60f403b..eb12c82 100644
--- a/sound/soc/codecs/da7210.c
+++ b/sound/soc/codecs/da7210.c
@@ -196,12 +196,15 @@
  * mute		: 0x10
  * reserved	: 0x00 - 0x0F
  *
- * ** FIXME **
- *
  * Reserved area are considered as "mute".
- * -> min = -79.5 dB
  */
-static const DECLARE_TLV_DB_SCALE(hp_out_tlv, -7950, 150, 1);
+static const unsigned int hp_out_tlv[] = {
+	TLV_DB_RANGE_HEAD(2),
+	0x0, 0x10, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 1),
+	/* -54 dB to +15 dB */
+	0x11, 0x3f, TLV_DB_SCALE_ITEM(-5400, 150, 0),
+};
+
 static const DECLARE_TLV_DB_SCALE(dac_gain_tlv, -7725, 75, 0);
 static const DECLARE_TLV_DB_SCALE(mic_vol_tlv, -600, 600, 0);
 static const DECLARE_TLV_DB_SCALE(aux2_vol_tlv, -600, 600, 0);
-- 
1.7.1


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