On Sat, 2021-04-17 at 06:57 +0200, Daniel Lezcano wrote: > On 14/04/2021 07:52, Matti Vaittinen wrote: > > Thermal core contains a logic for safety shutdown. System is > > attempted to > > be powered off if temperature exceeds safety limits. > > > > Currently this can be also utilized by regulator subsystem as a > > final > > protection measure if PMICs report dangerous over-voltage, over- > > current or > > over-temperature and if per regulator counter measures fail or do > > not > > exist. > > > > Move this logic to kernel/reboot.c and export the functionality for > > other > > subsystems to use. Also replace the mutex with a spinlock to allow > > using > > the function from any context. > > > > Also the EMIF bus code has implemented a safety shut-down. EMIF > > does not > > attempt orderly_poweroff at all. Thus the EMIF code is not > > converted to use > > this new function. > > > > Signed-off-by: Matti Vaittinen <matti.vaittinen@xxxxxxxxxxxxxxxxx> > > --- > > Changelog > > v7: > > - new patch > > > > Please note - this patch has received only a minimal amount of > > testing. > > (The new API call was tested to shut-down my system at driver probe > > but > > no odd corner-cases have been tested). > > > > Any testing for thermal shutdown is appreciated. > > You can test it easily by enabling the option > CONFIG_THERMAL_EMULATION > > Then in any thermal zone: > > Assuming the critical temp is below the one specified in the command: > > echo 100000 > /sys/class/thermal/thermal_zone0/emul_temp > Thanks Daniel, I will see how that works when I create the next version :) Best Regards Matti Vaittinen
