Re: [Kernel-discuss] h4000 sound - earphones problem. Need info.

Hello uyamba,

Tuesday, November 28, 2006, 8:57:16 PM, you wrote:

> Hi guys!

> I want to fix some problems with h4150 :-)

  Welcome, and thanks for joining ;-)

> 1) Sound work nice, but earphone detection don't work :-(
> It seems that there is GPIO port that enable earphone driver.
> Function snd_h4000_audio_set_speaker_power() in h4000_audio.c only
> switches on/off speaker, but when speaker is off sound in earphones is
> very-very low. And this function doesn't run automatically when
> earphones are inserted (maybe something with wrong configured
> interrupts?).

  Apparently. You should check if there're any discrepancies with
earphone detection interrupt handling comparing to other ports (it all
should be the same, modulo GPIO numbers).

> I am new in linux kernel so please help me :-)
> Could anybody provide any info about iPAQ h1450 GPIO and sound
> switching schenematics?

  No ;-)

> What info was the source for h4000-asic.h?

  HaRET, apparently ;-). So, once you check that the code is correct, you
will need to use HaRET to check that ASIC3 GPIO numbers in
h4000-asic.h are correct, and you actually can see GPIO flip when
inserting/removing earphone jack in WinCE.

> --
> Anton

-- 
Best regards,
 Paul                            mailto:pmiscml_at_gmail.com