Joerg Reisenweber wrote:
Am Sa 31. Mai 2008 schrieb Carsten Haitzler:
On Sat, 31 May 2008 03:37:02 +0200 Joerg Reisenweber <[EMAIL PROTECTED]>
babbled:
Am Sa 31. Mai 2008 schrieb Andy Green:
Somebody in the thread at some point said:
| Extension question: How about a list of all such files and devices,
| along with a short description of their behavior?
|
| Michael
|
| Joerg Reisenweber wrote:
|> related question: where's the watchdog-timer device I regularly write
|> some "garbage" to it to keep NEO from suspending? Scriptable solution
|> preferred!
Yeah. How about those things.
-Andy
hey don*t take this easy! It's hard to find any info on it, and not even
an
experienced developer has spare time to "reverse-engineer" the driver code
to
get it. There HAS TO BE a man page. If there is already: probably my
fault,
toss me a pointer.
in userspace its simple like this:
1. screenblank kickis in (if enabled).
2. a timer starts for N seconds (default is 10)
2.1. if screenblank interrupted (but touschreen press) timer is aborted
3. when timer ticks off "apm -s" is executed.
the rest is the job of the apm subsystem and anything intercepting apm
suspend
requests via the apm bios. technically qpe should be doing this and halting
any
suspend requests during a phone call for example. no reason any other
process
can't do the same. apparently the suspend can't be stopped - but it can be
indefinitely delayed (which is kind of odd - and well... bad - but that's
the
infra used).
--
Carsten Haitzler (The Rasterman) <[EMAIL PROTECTED]>
So I can intercept apm -s (e.g replace by some script), and decide whether I
like to let the device go to sleep or just discard the call. No?
Does anybody care about apm -s call return code?
no device to write to each 5sec to simulate a touch action and thus reset
timer?
/j
You might want to take a look at the public git repository for Android's
kernel. It includes a nice little power management scheme where it uses
a locking mechanism to prevent suspend. It is found in device/android...
http://git.android.com/
Cheers,
Sean
