From: Takashi Iwai Date: Wed, 3 Aug 2011 05:48:37 +0000 (+0200) Subject: ALSA: hda - Fix digital-mic mono recording on ASUS Eee PC X-Git-Tag: v3.1-rc2~37^2~16 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=adabb3ec8b0bcbd2ca81973d33c3da726b939c7c;p=pandora-kernel.git ALSA: hda - Fix digital-mic mono recording on ASUS Eee PC The digital-mic unit on ASUS Eee PC gives PDM signals instead of the normal stereo PCM, thus you can't record a mono stream from the stereo stream as is; the summed stereo signal results in almost zero level, and you'll hear only soft noise. As a workaround, use ALC269-specific COEF to manipulate the dmic route for mono, like used for ALC271x. This is implemented as a fix-up, thus it works only with model=auto or without REALTEK_QUIRKS Kconfig. Reported-and-tested-by: Pavel Roskin Signed-off-by: Takashi Iwai --- Reading git-diff-tree failed