From: Randy Cushman <rcushman_linux@earthlink.net>
To: alsa-devel@alsa-project.org
Subject: RFC: Enhance AD AC '97 mixer control names
Date: Fri, 09 Mar 2007 10:53:49 -0500 [thread overview]
Message-ID: <45F1830D.9020609@earthlink.net> (raw)
The Analog Devices multichannel AC '97 CODECs are configured in ALSA to
use ADI Compatibility Mode (aka AC '97 No Compatibility Mode). Because
of this, the function of some "Playback" controls differ from the AC '97
standard. I propose renaming the controls to more closely match their
function. If no one objects, I will prepare a patch for this. Details
follow:
(For each table I will identify the controls using the default AC '97
names.)
Standard AC '97 control functions:
Master - Front pin attenuation
Headphone - Headphone pin attenuation
PCM - Multichannel DAC level
Surround - Surround pin attenuation
Center - Center pin attenuation
LFE - LFE pin attenuation
Names currently assigned for the AD1888, AD1980 and AD1985 CODECs (the
AD1986 currently uses the default names):
Master - Master Surround
Headphone - Master
PCM - PCM
Surround - Surround
Center - Center
LFE - LFE
ADI function for AD1888, AD1980 and AD1985 CODECs:
Master - Front, Center and LFE pin attenuation
Headphone - Surround or Headphone pin attenuation
(These CODECs have shared pins that are used for either Surround or
Headphone)
PCM - Front channel DAC level
Surround - Surround channel DAC level
Center - Center channel DAC level
LFE - LFE channel DAC level
ADI function for AD1986 CODEC:
Master - Multichannel pin attenuation
Headphone - Headphone pin attenuation
PCM - Front channel DAC level
Surround - Surround channel DAC level
Center - Center channel DAC level
LFE - LFE channel DAC level
Proposed control names for AD1888, AD1980 and AD1985 CODECs:
Master - Master (Front, Center and LFE)
Headphone - Surround or Headphone
PCM - PCM Front
Surround - PCM Surround
Center - PCM Center
LFE - PCM LFE
Proposed control names for AD1986 CODEC:
Master - Master Multichannel
Headphone - Headphone
PCM - PCM Front
Surround - PCM Surround
Center - PCM Center
LFE - PCM LFE
Randy Cushman
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next reply other threads:[~2007-03-09 15:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-09 15:53 Randy Cushman [this message]
2007-03-12 12:27 ` RFC: Enhance AD AC '97 mixer control names Takashi Iwai
2007-03-14 0:21 ` Inexplicable mixer control creation Randy Cushman
2007-03-16 15:27 ` Takashi Iwai
2007-03-16 17:45 ` Randy Cushman
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