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Diffstat (limited to 'kernel/drv/oss_hdaudio/oss_hdaudio.man')
| -rw-r--r-- | kernel/drv/oss_hdaudio/oss_hdaudio.man | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/kernel/drv/oss_hdaudio/oss_hdaudio.man b/kernel/drv/oss_hdaudio/oss_hdaudio.man new file mode 100644 index 0000000..e2bae7a --- /dev/null +++ b/kernel/drv/oss_hdaudio/oss_hdaudio.man @@ -0,0 +1,77 @@ +NAME + oss_hdaudio - Intel High Definition Audio (AZALIA) + +DESCRIPTION + Open Sound System driver for Intels high definition audio known as + "Azalia". This driver supports Intel 915/925 chipsets with the + Realtek ALC880 and CMedia 9880 8 channel codecs. + + The HDA driver supports: + + o 8-96Khz Playback/Recording + o 8 or 16 or 32 bits + o 2, 4, 6 or 8 channel audio. + o SPDIF digital output and Input + o AC3 passthrough + + HDAUDIO MIXER + The Intel HDA mixer is a new type of mixer that doesn't have + the normal volume controls found on AC97 or legacy SB devices. + The HDA mixer presents a concept of Jacks and you can configure + any jack to be either an output or an input jack. + + Some motherboards may not correctly initialize the jacks according + to their color and functionality but in general here's the + configuration that should generally be followed: + + o Orange = Center/LFE o Blue = Line-in + o Black = Rear o Green = Front + o Grey = Side o Pink = Mic + + Some Azalia codecs support front panel connectors and so if you see + fp-green and fp-pink connectors, then these are for front panel + speaker and mic/line-in Jacks. + + There is a function selector for most of the analog audio jacks (for example + connector.pink.mode). This selector is used to control if the jack is used + as an input (microphone or line in) or output (front, rear, side, speaker, + etc). + +KNOWN PROBLEMS +In general Azalia based systems (laptops/motherboards) would require a custom +driver to work properly. Due to enormous number of different systems it is not +possible to develop such custom drivers for all systems. A generic driver is +used for systems that don't have dedicated drivers. + +Unfortunately the mixer and control panel interface (see ossmix(1)) +for "generic" systems is very cryptic and difficult to +understand. To solve problems with volumes or signal routing you need to +start ossxmix(1) and change the controls one at time until you get the desired +effect. + +OPTIONS +o hdaudio_jacksense enables jack sensing mode when the hdaudio driver is + loaded. In this mode all I/O pin's that are not + in use will be disabled as well as the mixer controls + that are related with them. In this way the + mixer/control panel will become more intuitive. + However OSS will need to be restarted with soundoff; + soundon every time new inputs or outputs are attached + to the audio jacks. Default : 0. + + NOTE! hdaudio_jacksense=1 works only in some systems. + Many laptops and motherboards don't support jack + sensing. + +o hdaudio_noskip Disable skipping unconnected jack. All mixer controls + will be shown, even for disabled I/O pins. + Can get values 0-7. 1-7 is a bitmask, where every bit + masks a different check. Bit 3 (= value 4) overrides + jacksense check too. + Default: 0 - unconnected jacks are skipped. +FILES + CONFIGFILEPATH/oss_hdaudio.conf Device configuration file + +AUTHOR + 4Front Technologies + |