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superio/ite/common: Add temperature limits

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Add devicetree options to set temperature limits that are used to alarm
user when temperature exceeds defined values.

Audio alerts by superio are not implemented yet, but since limits are
visible to userland, some software might use them as is. For instance,
lm-sensors displays "ALERT" when temperature exceeds limits.

Change-Id: I56e041fb78f518d6a9640dc2b3985459991242b9
Signed-off-by: Vagiz Tarkhanov <rakkin@autistici.org>
Reviewed-on: https://review.coreboot.org/21844
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Vagiz Trakhanov
2017-09-28 14:25:59 +00:00
committed by Martin Roth
parent 17c5771530
commit cc9c0cbc7e
3 changed files with 12 additions and 0 deletions
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6
src/superio/ite/common/env_ctrl.c
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@ -129,6 +129,12 @@ static void enable_tmpin(const u16 base, const u8 tmpin,
ite_ec_write(base, ITE_EC_TEMP_ADJUST[tmpin-1], conf->offset);
}
/* Set temperature limits */
u8 max = conf->max;
ite_ec_write(base, ITE_EC_HIGH_TEMP_LIMIT(tmpin),
max ? max : 127);
ite_ec_write(base, ITE_EC_LOW_TEMP_LIMIT(tmpin), conf->min);
/* Enable the startup of monitoring operation */
reg = ite_ec_read(base, ITE_EC_CONFIGURATION);
reg |= ITE_EC_CONFIGURATION_START;