On Mon, 18 Jan 2016 22:03:19 +0000 One Thousand Gnomes <[email protected]> wrote:
> > > Your user space can do it (as most Android does).
> >
> > How can it do it in automatically in a standardized way without need for
> > daemon support?
>
> You don't need to - it can be device specific. In Android it usually is.
> I've never understood why low end devices don't also abstract user space
> descriptions of power control into DT nodes as well as kernel properties ?
>
Well, on these android devices, they are only intended to run android and
have another abstraction layer where you can hide things.
If doing actions on opening or closing a tty should not be implemented in
kernel space, then an alternative I see would be to at least have proper
rfkill support for bluetooth and gps in kernel. Then userspace can at least
can talk to a standardised interface. So userspace just has to implement
generic things.
That would mean for the kernel drivers needed:
W2CBW003/bluetooth:
map the rfkill to just a simple regulator
W2SG0004/gps:
being notified about incoming data
a) the nice way: getting it from the tty/tty_port layer
(but requiring changes at generic kernel code)
or
b) the ugly way:
remux the data line as a gpio and simply look for state
changes during rfkill call (probably only during unblock)
The first characters after power on would probably be lost
toggle a gpio depending on the desired and detected state
Regards,
Andreas
pgpqngTdjTOU8.pgp
Description: OpenPGP digital signature
_______________________________________________ Gta04-owner mailing list [email protected] http://lists.goldelico.com/mailman/listinfo.cgi/gta04-owner
