[gta04] Meeting minutes for GTA04 discussion 20080411

[Carsten Haitzler (The Rasterman)]

On Mon, 14 Apr 2008 19:10:11 +0100 Andy Green <andy at openmoko.com> babbled:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Somebody in the thread at some point said:
> | Andy Green wrote:
> |> ~ - If we see any user interaction with the phone, ie, touchscreen,
> |> buttons, we always power the LCM backlight and S3C6400 ready to respond
> |> to what it is he wanted to do
> |
> | Hmm, I'd leave the decision whether to power on the backlight or not
> | to the CPU. Before the CPU is up, there's nothing useful to display
> | anyway, and the CPU (application, really) may very well decide not to
> | bring up the LCM.
> 
> OK, fair enough.  I guess a button might cause the CPU to make a beep
> for feedback or something.

the problem is x will bring the screen up the moment it gets any touchscreen
interrupts. backlight then must be on and screen will display whatever contents
it has. we need to do some mods to x to have backlight controls in x and then
leave it entirely to the "screensaver" to decide what to do on wakeup (when x
will report the sceensaver/blank has ended).

-- 
Carsten Haitzler (The Rasterman) <raster at openmoko.org>