Re: [PATCH v2 2/3] bq2415x_charger: Use power_supply notifier forautomode

[Pavel Machek]

Hi!

On Sun 2013-11-24 20:41:46, Pali Rohár wrote:
> On Sunday 24 November 2013 20:26:09 Sebastian Reichel wrote:
> > On Sun, Nov 24, 2013 at 08:01:16PM +0100, Pali Rohár wrote:
> > > Currently on Maemo 5 this is handled in userspace (with open
> > > source dsme daemon).
> > 
> > I assume it currently also takes care of the bq2415x watchdog?
> > That means if the daemon dies charging will stop, because the
> > watchdog does no longer trigger.
> > 
> > When your patch is applied you have introduced a safety issue.
> > When the daemon dies charging will continue and temperature is
> > no longer checked.
> > 
> > -- Sebastian
> 
> No dsme checking battery temperature and does not handle bq24510 
> timer (previously this was in closed bme daemon which 
> functionality is now in kernel drivers). But dsme daemon also 
> kicking tlw4030 watchdog, so when daemon dies after 30s tlw4030 
> reboot device.
> 
> But right you can implement correctly this in userspace (e.g. 
> when daemon not running/crashed, you can restart daemon or reboot 
> system or disable charing, whatever...) and you do not need to 
> have it in kernel...

Charging handling really should be in kernel.

1st) you want charging to work with init=/bin/bash, and you want it
with regular (not n900-specific) debian/arm.

2st) normally hardware, firmware or kernel does the charging. (PCs,
Sharp Zaurus). Yes, it pulls us farther away from Maemo...

Where can I get dsme sources?
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/