Re: [alsa-devel] [PATCH] Initial support of the Mitac 8252D (based on ALC883)

Hi Andy Shevchenko!

On Thu, Dec 06, 2007 at 11:46:12AM +0200, Andy Shevchenko wrote next:

The attached patch adds initial support of the Mitac 8252D (http://www.mitac-mtc.com.tw/English/products/8252Dspec.htm).

Working:

• Front speakers (volume + mute)
• Center/LFE speakers (volume + mute)
• HP out (with Front Volume)
• HP individual mute switch
• HP Jack sense
• Front Mic and its volume

Not tested:

• external mic and its volume

Not working while now:

• Mic Jack sense

Questionable:

• is Mic have Jack sense?
• one or two Mic volume controls?
• CD/Line-in: presense in the mixer

Additional info here.

All jacks are connected to the one Jack sense input pin via different impedances (1:2:4 scale). However p.50 of the datasheet says 'The ALC883 does not support hardware impedance detect.' Due to above the Mic and S/PDIF sense couldn't be evaluated.

Also, the laptop has S/PDIF jack. And specifications are included the 5.1 outputs.