lkml.org 
[lkml]   [2012]   [Jan]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[095/129] ALSA: virtuoso: Xonar DS: fix polarity of front output
3.2-stable review patch.  If anyone has any objections, please let me know.

------------------
Content-Length: 1146
Lines: 30

From: Clemens Ladisch <clemens@ladisch.de>

commit f0e48b6bd4e407459715240cd241ddb6b89bdf81 upstream.

The two DACs for the front output and the surround/center/LFE/back
outputs are wired up out of phase, so when channels are duplicated,
their sound can cancel out each other and result in a weaker bass
response. To fix this, reverse the polarity of the neutron flow to
the front output.

Reported-any-tested-by: Daniel Hill <daniel@enemyplanet.geek.nz>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
sound/pci/oxygen/xonar_wm87x6.c | 1 +
1 file changed, 1 insertion(+)

--- a/sound/pci/oxygen/xonar_wm87x6.c
+++ b/sound/pci/oxygen/xonar_wm87x6.c
@@ -177,6 +177,7 @@ static void wm8776_registers_init(struct
struct xonar_wm87x6 *data = chip->model_data;

wm8776_write(chip, WM8776_RESET, 0);
+ wm8776_write(chip, WM8776_PHASESWAP, WM8776_PH_MASK);
wm8776_write(chip, WM8776_DACCTRL1, WM8776_DZCEN |
WM8776_PL_LEFT_LEFT | WM8776_PL_RIGHT_RIGHT);
wm8776_write(chip, WM8776_DACMUTE, chip->dac_mute ? WM8776_DMUTE : 0);



\
 
 \ /
  Last update: 2012-01-24 04:01    [W:0.450 / U:0.352 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site