Re: Use mic from headphone jack on freebsd laptop?

Hi Johannes,


I have been wanting the exact same thing on my laptop, so I have been 
digging around in the hda code.

I have got to the point where I can use the headset mic, but I have to 
manually switch from the internal one.

There is no configuration magic, I had to patch the driver.

It seems nearly impossible to find docs on Realtek codecs, I have looked 
at what Linux does in their driver.

They change some mysterious registers in the codec, so I my patch just 
does the same.

Which codec do you have? I have the ALC283 ('cat /dev/sndstat' should 
tell you)


Jakob



On 3/18/19 4:02 PM, Johannes Lundberg wrote:
> Hi
>
> On my Dell laptop the output audio switches to the headphones
> automatically when plugged in, however, the same does not seem to be
> true for the mic. Is there any configuration magic that can be done to
> use the headphone mic instead of the internal one?
>
> Here's pin config:
>
> hdaa0: Dumping AFG pins:
> hdaa0: nid   0x    as seq device       conn  jack    loc        color   misc
> hdaa0: 18 90a60140 4  0  Mic           Fixed Digital Internal   Unknown 1
> hdaa0:     Caps: IN
> hdaa0: 19 40000000 0  0  Line-out      None  Unknown 0x00       Unknown
> 0 DISA
> hdaa0:     Caps: IN
> hdaa0: 20 90170110 1  0  Speaker       Fixed Analog  Internal   Unknown 1
> hdaa0:     Caps:    OUT    EAPD      Sense: 0x00000000 (disconnected)
> hdaa0: 24 411111f0 15 0  Speaker       None  1/8     Rear       Black
> 1 DISA
> hdaa0:     Caps: IN             VREF Sense: 0x00000000 (disconnected)
> hdaa0: 25 411111f0 15 0  Speaker       None  1/8     Rear       Black
> 1 DISA
> hdaa0:     Caps: IN             VREF Sense: 0x80000000 (connected)
> hdaa0: 26 411111f0 15 0  Speaker       None  1/8     Rear       Black
> 1 DISA
> hdaa0:     Caps: IN             VREF Sense: 0x00000000 (disconnected)
> hdaa0: 27 411111f0 15 0  Speaker       None  1/8     Rear       Black
> 1 DISA
> hdaa0:     Caps: IN OUT    EAPD VREF Sense: 0x00000000 (disconnected)
> hdaa0: 30 421212f2 15 2  Speaker       None  1/4     Front      Black
> 2 DISA
> hdaa0:     Caps:    OUT              Sense: 0x00000000 (disconnected)
> hdaa0: 33 0221101f 1  15 Headphones    Jack  1/8     Front      Black   0
> hdaa0:     Caps:    OUT HP EAPD      Sense: 0x80000000 (connected)
> hdaa0: NumGPIO=3 NumGPO=0 NumGPI=0 GPIWake=0 GPIUnsol=1
> hdaa0:  GPIO0: disabled
> hdaa0:  GPIO1: disabled
> hdaa0:  GPIO2: disabled
> hdaa1: Dumping AFG pins:
> hdaa1: nid   0x    as seq device       conn  jack    loc        color   misc
> hdaa1:  3 18560010 1  0  Digital-out   Jack  Digital 0x18       Unknown 0
> hdaa1:     Caps:    OUT             hdac0: Command timeout on address 2
>   Sense: 0xffffffff (connected, ELD valid)
> hdaa1: NumGPIO=0 NumGPO=0 NumGPI=0 GPIWake=0 GPIUnsol=0
>
> And in /boot/loader.conf I have this (don't remember why I put it there
> or if I need it - it might have been copied over from previous laptop)
>
> hint.hdaa.0.nid33.config="as=1 seq=15 device=Headphones"
>
> I'm assuming here that the headphone jack supports mic - it's a 2018
> laptop after all.
>
> Cheers
>
> /Johannes
>
>
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