Date: Mon, 16 Nov 2009 10:44:43 +0900 From: "kabe@sra-tohoku.co.jp" <kabe@sra-tohoku.co.jp> (added by vega) To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/140591: [PATCH][sound] No sound output on lineout/headphone jacks using AD1980 AC'97 codec chip (Fujitsu C610) Message-ID: <2301916200910.Jf0K9deD231127$@sra-tohoku.co.jp.msg> Resent-Message-ID: <200911160230.nAG2U1Xu027325@freefall.freebsd.org>
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>Number: 140591
>Category: kern
>Synopsis: [PATCH][sound] No sound output on lineout/headphone jacks using AD1980 AC'97 codec chip (Fujitsu C610)
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Nov 16 02:30:01 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator: kabe@sra-tohoku.co.jp
>Release: FreeBSD 7.2-RELEASE i386
>Organization:
-
>Environment:
System: FreeBSD capricorn.five.ten 7.2-RELEASE FreeBSD 7.2-RELEASE #0: Fri Nov 13 02:26:07 JST 2009 kabe@capricorn.five.ten:/usr/obj/usr/src/sys/GENERIC i386
Fujitsu (Fujitsu-Siemens) C610
Intel ICH5 + AD1980 AC'97 codec
>Description:
Internal speaker perfectly works, but
headphone or lineout jacks have no audio output.
>How-To-Repeat:
With motherboards with AD1980 codec, and monitoring its LINE_OUT pins,
play some audio. No audio output.
SURR_OUT/HP_OUT pins will have output.
These AD1980 pins may be wired in various ways to lineout/headphone/internal
speakers, and some configuration (particulary laptops) may not have
one of the output wired.
>Fix:
The patch below will only fix Fujitsu C610,
but just collapsing into
void ad198x_patch(struct ac97_info* codec)
{
ac97_wrcd(codec, 0x76, ac97_rdcd(codec, 0x76) | 0x0400);
}
seems to be the better solution. Also backportable to older FreeBSD.
(cd /usr/src; env TZ=GMT diff -u sys/dev/sound/pcm/ac97_patch.c{.dist,})
--- sys/dev/sound/pcm/ac97_patch.c.dist 2009-04-15 03:14:26.000000000 +0000
+++ sys/dev/sound/pcm/ac97_patch.c 2009-11-15 16:10:10.000000000 +0000
@@ -44,9 +44,46 @@
void ad198x_patch(struct ac97_info* codec)
{
+ /*
+ * AD198x series have 2 pairs of analog output:
+ * SURR_OUT/HP_OUT(surround or headphone) and LINE_OUT.
+ *
+ * Since SURR_OUT/HP_OUT output pins are equipped with power amps,
+ * retail machines often wire these to headphones jacks and/or
+ * internal speakers.
+ * This also means "mixer phout" will adjust speaker volume
+ * and "mixer vol" adjust lineout level, _independently_.
+ *
+ * (Linux has flags to swap vol/phout, and FreeBSD can do similar
+ * by mix_setrealdev() and gang them with mix_setparentchild())
+ *
+ * AD198x register 0x76
+ * 0x0400: select mixer for SURR_OUT/HP_OUT output pins (default surround DAC)
+ * 0x0020: select surround DAC for LINE_OUT output pins (default mixer)
+ *
+ * Selecting surround DAC for any output will yield "no sound",
+ * until FreeBSD supports surround DAC handling.
+ *
+ * Previous ad198x_patch() had set 0x0420, but 0x0400 seems to be
+ * better for all instances. At least you have mixer output
+ * for all output pins.
+ * The value is valid for all AD1888, AD1980, AD1985 and AD1986.
+ * (AD1986, having independent SURR_OUT and HP_OUT, will select
+ * mixer output for SURR_OUT by setting 0x0400 bit.)
+ *
+ * Fujitsu C610 seems to wire SURR_OUT/HP_OUT for
+ * internal speaker, and LINE_OUT for lineout AND headphone jacks;
+ * by setting previous 0x0420, internal speaker works but
+ * no output for either jacks.
+ * ASUS A9T may had been working by not setting the register because
+ * it only wired LINE_OUT.
+ */
switch (ac97_getsubvendor(codec)) {
case 0x11931043: /* Not for ASUS A9T (probably else too). */
break;
+ case 0x122f10cf: /* Fujitsu C610 (perhaps for others) */
+ ac97_wrcd(codec, 0x76, ac97_rdcd(codec, 0x76) | 0x0400);
+ break;
default:
ac97_wrcd(codec, 0x76, ac97_rdcd(codec, 0x76) | 0x0420);
break;
>Release-Note:
>Audit-Trail:
>Unformatted:
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