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From: Benjamin Herrenschmidt <bh40@calva.net>
To: <daenzerm@student.ethz.ch>, <linuxppc-dev@lists.linuxppc.org>
Subject: Re: sound again [was: Re: xf4 bug report]
Date: Wed, 26 Jul 2000 13:09:23 +0200	[thread overview]
Message-ID: <20000726110923.9381@mailhost.mipsys.com> (raw)
In-Reply-To: <397EB684.592827BD@relog.ch>


>> Just wanted to tell that after putting earphones to the Mac, the sound
>> comes. Appearently it is only the internal speaker which does not work.
>
>Just for the record:
>
>My Pismo shows the same behaviour, the 'compatible' file in /proc/device-tree
>says 'screamerawacs'.

I'm not completely sure, but some of these machines have the sound output
routed to an external I2C "SRS"/ampilfier module that drives the
speakers. We have code to set it up via Cuda on older machines, but not
for newer Core99 machines.

An interesting note also: When using this external module, Darwin driver
"fix" the AWACS volume to a constant value and uses the amplifier volume
control via I2C.

Ben.


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

  reply	other threads:[~2000-07-26 11:09 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2000-07-25 19:30 sound again [was: Re: xf4 bug report] Iain Sandoe
2000-07-26 14:37 ` Steffen Haeuser
2000-07-26  9:59   ` Michel Dänzer
2000-07-26 11:09     ` Benjamin Herrenschmidt [this message]
2000-07-26 12:55   ` Topi Kanerva
2000-07-26 13:10     ` Benjamin Herrenschmidt
2000-07-26 13:13       ` Topi Kanerva
  -- strict thread matches above, loose matches on Subject: below --
2000-07-26 18:38 Iain Sandoe
2000-07-26 18:29 Iain Sandoe
2000-07-25 21:41 Iain Sandoe
2000-07-25 19:53 Iain Sandoe
2000-07-26  3:51 ` Steffen Haeuser
2000-07-25 19:25 Iain Sandoe
2000-07-26  2:53 ` Steffen Haeuser
2000-07-25 18:53 Iain Sandoe
2000-07-26  2:31 ` Steffen Haeuser
2000-07-25 18:35 Iain Sandoe
2000-07-26  1:59 ` Steffen Haeuser
2000-07-26  2:30 ` Steffen Haeuser
2000-07-25 15:58 Iain Sandoe
2000-07-25 23:30 ` Steffen Haeuser
2000-07-25 16:46   ` Franz Sirl
2000-07-25 14:42 Iain Sandoe
2000-07-25 22:50 ` Steffen Haeuser
2000-07-25 18:49   ` Geert Uytterhoeven
2000-07-26 18:59     ` Steffen Haeuser
2000-07-26 17:27       ` Michael Schmitz
2000-07-27  0:49         ` Steffen Haeuser
2000-07-26 17:58           ` Michael Schmitz
2000-07-26 18:48             ` Michel Dänzer
2000-07-26 19:28               ` Michael Schmitz
2000-07-27  1:29             ` Steffen Haeuser
2000-07-27 12:13           ` Geert Uytterhoeven
2000-07-27 20:44             ` Steffen Haeuser

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