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dptf: Add support for Passive Policies

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This patch adds support for emitting the Thermal Relationship Table, as
well as _PSV Methods, which together form the basis for DPTF Passive
Policies.

BUG=b:143539650
TEST=compiles

Change-Id: I82e1c9022999b0a2a733aa6cd9c98a850e6f5408
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41886
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Tim Wawrzynczak
2020-05-29 14:10:53 -06:00
committed by Patrick Georgi
parent c41f7f15c1
commit 7eb1136c27
4 changed files with 131 additions and 0 deletions
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9
src/drivers/intel/dptf/dptf.c
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@@ -35,6 +35,12 @@ static bool is_participant_used(const struct drivers_intel_dptf_config *config,
if (config->policies.active[i].target == participant)
return true;
/* Passive? */
for (i = 0; i < DPTF_MAX_PASSIVE_POLICIES; ++i)
if (config->policies.passive[i].source == participant ||
config->policies.passive[i].target == participant)
return true;
/* Check fan as well (its use is implicit in the Active policy) */
if (participant == DPTF_FAN && config->policies.active[0].target != DPTF_NONE)
return true;
@@ -55,6 +61,9 @@ static void dptf_fill_ssdt(const struct device *dev)
dptf_write_active_policies(config->policies.active,
DPTF_MAX_ACTIVE_POLICIES);
dptf_write_passive_policies(config->policies.passive,
DPTF_MAX_PASSIVE_POLICIES);
printk(BIOS_INFO, "\\_SB.DPTF: %s at %s\n", dev->chip_ops->name, dev_path(dev));
}