> Am 18.10.2017 um 15:56 schrieb Pavel Machek <[email protected]>: > > On Wed 2017-10-18 06:22:04, Tony Lindgren wrote: >> * H. Nikolaus Schaller <[email protected]> [171018 05:49]: >>>> Am 18.10.2017 um 14:28 schrieb Pavel Machek <[email protected]>: >>>> >>>> So I started something, it is at. >>>> >>>> https://github.com/pavelmachek/libbattery >>>> >>>> My battery on n900 is currently uncalibrated (and charging), still it >>>> gets some kind of estimation: >>>> >>>> Battery -1 % >>>> Seconds -1 >>>> State 1 >>>> Voltage 3.88 V >>>> Battery 63 % >>>> >>>> Of course, there's a lot more work to be done. >>> >>> Nice start but not a solution to our problem. >>> >>> Our problem is that people simply expect that for example >>> https://packages.debian.org/wheezy/xfce/xfce4-battery-plugin >>> displays the battery percentage. >> >> I think we could make things compatible with various battery apps by >> having libbattery write back the capacity percentage and time remaining >> to the kernel driver via sysfs or a dev entry. Then the kernel interface >> can just display the data to whatever apps. > > Hmm. This could be as simple as providing symlink from > /sys/class/power/userland-battery to some place writable by > userspace...
Well, please implement arbitrary symlinks in /sysfs... root@letux:~# ln -sf /tmp/somewhere /sys/class/power_supply/fake-battery ln: failed to create symbolic link '/sys/class/power_supply/fake-battery': Operation not permitted root@letux:~# And you need to run a daemon so that the data is available somewhere. BR and thanks, Nikolaus
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