From: Takashi Iwai <tiwai@suse.de>
To: alsa-devel@lists.sourceforge.net
Subject: ALC650 GPIO bits
Date: Wed, 03 Mar 2004 16:30:03 +0100 [thread overview]
Message-ID: <s5h7jy2lzic.wl@alsa2.suse.de> (raw)
Hi,
it seems that some mobo with ALC650 uses GPIO 0 as the mic bias +5V.
in ac97_patch.c, the GPIO 0 is turned on/off in conjunction with
the mic/center sharing switch, but this handling appears only for the
old ALC650 revision (D or older).
interestingly, there is a report that even a mobo with the newer
revision of ALC650 has this GPIO bit.
now, the question is why GPIO is not handled with the revision E and
F. i can't remember the reason (google gives no good info) -- does
anyone still know?
is there any mobo with a side effect of this GPIO?
Takashi
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next reply other threads:[~2004-03-03 15:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-03 15:30 Takashi Iwai [this message]
2004-03-03 15:48 ` ALC650 GPIO bits James Courtier-Dutton
-- strict thread matches above, loose matches on Subject: below --
2004-03-03 17:13 p z oooo
2004-03-03 17:54 ` Takashi Iwai
2004-03-03 17:14 p z oooo
2004-03-03 17:22 p z oooo
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