Re: touch-panel driver and manpage for PERSONA SH3 mahicne

[KIYOHARA Takashi <kiyohara%kk.iij4u.or.jp@localhost>]

Hi,


From: "Valeriy E. Ushakov" <uwe%ptc.spbu.ru@localhost>
Date: Sun, 19 Jun 2005 02:27:49 +0400

> This is great news.  May be we should look into merging jornada and
> persona drivers.  I've looked at the touch-panel code, and a lot of
> code can be factored out, they only differ in the bits to pull and ADC
> channels to read.

That. I think it is possible.  ;-)

psh3pwr uses interrupt for in/out of plug.  And POWER button not uses
interrupt.
psh3lcd can control contrast, power by GPIO.  brightness controled by
HG71C105FE.  It is custom IC.  I don't know spec.


> BTW, what does persona use for audio, sh7709 onboard DAC or a real
> audio chip?  Jornada uses DAC, but I cannot make a driver that uses
> DMAC/CMT to feed DAC to work - the machine locks up.  I wonder if
> that's a hw design flaw or something.  WinCE on jornada does not use
> DMAC at all.

It is not interpretable. The mike is connected with ADC4 via BA3410AF.
However, where the speaker is connected has not been understood. 

  BA3410AF is 3V recoding / playback system preamplifier IC.

--
kiyohara