| Date | Mon, 23 Jan 2012 18:35:15 -0800 | From | Greg KH <> | Subject | [095/129] ALSA: virtuoso: Xonar DS: fix polarity of front output |
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3.2-stable review patch. If anyone has any objections, please let me know.
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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);
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