dptf: Add support for Passive Policies
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>
diff --git a/src/drivers/intel/dptf/chip.h b/src/drivers/intel/dptf/chip.h
index 730d23e..0cd2ad2 100644
--- a/src/drivers/intel/dptf/chip.h
+++ b/src/drivers/intel/dptf/chip.h
@@ -8,6 +8,7 @@
struct drivers_intel_dptf_config {
struct {
struct dptf_active_policy active[DPTF_MAX_ACTIVE_POLICIES];
+ struct dptf_passive_policy passive[DPTF_MAX_PASSIVE_POLICIES];
} policies;
};
diff --git a/src/drivers/intel/dptf/dptf.c b/src/drivers/intel/dptf/dptf.c
index 20f8d9b..74f4812 100644
--- a/src/drivers/intel/dptf/dptf.c
+++ b/src/drivers/intel/dptf/dptf.c
@@ -35,6 +35,12 @@
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 @@
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));
}