linux-kernel - [PATCH 3.11 003/144] ALSA: oxygen: Xonar DG(X): modify DAC routing

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Date:	Tue,  1 Apr 2014 12:13:27 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Roman Volkov <v1ron@...l.ru>, Clemens Ladisch <clemens@...isch.de>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.11 003/144] ALSA: oxygen: Xonar DG(X): modify DAC routing

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

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

From: Clemens Ladisch <clemens@...isch.de>

commit 1f91ecc14deea9461aca93273d78871ec4d98fcd upstream.

When selecting the audio output destinations (headphones, FP headphones,
multichannel output), unnecessary I2S channels are digitally muted to
avoid invalid signal levels on the other outputs.

Signed-off-by: Roman Volkov <v1ron@...l.ru>
Signed-off-by: Clemens Ladisch <clemens@...isch.de>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 sound/pci/oxygen/xonar_dg.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/sound/pci/oxygen/xonar_dg.c b/sound/pci/oxygen/xonar_dg.c
index 5519b8f..eb7ad77 100644
--- a/sound/pci/oxygen/xonar_dg.c
+++ b/sound/pci/oxygen/xonar_dg.c
@@ -294,6 +294,16 @@ static int output_switch_put(struct snd_kcontrol *ctl,
 		oxygen_write16_masked(chip, OXYGEN_GPIO_DATA,
 				      data->output_sel == 1 ? GPIO_HP_REAR : 0,
 				      GPIO_HP_REAR);
+		oxygen_write8_masked(chip, OXYGEN_PLAY_ROUTING,
+				     data->output_sel == 0 ?
+				     OXYGEN_PLAY_MUTE01 :
+				     OXYGEN_PLAY_MUTE23 |
+				     OXYGEN_PLAY_MUTE45 |
+				     OXYGEN_PLAY_MUTE67,
+				     OXYGEN_PLAY_MUTE01 |
+				     OXYGEN_PLAY_MUTE23 |
+				     OXYGEN_PLAY_MUTE45 |
+				     OXYGEN_PLAY_MUTE67);
 	}
 	mutex_unlock(&chip->mutex);
 	return changed;
-- 
1.9.1

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