dptf: Add support for generation of Active Policies

This change adds support for generating the different pieces of DPTF
Active Policies. This includes the Active Relationship Table, in
addition to _ACx methods.

BUG=b:143539650
TEST=compiles

Change-Id: Iea0ccbd96f88d0f3a8f2c77a7d0f3a284e5ee463
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41885
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>

src/drivers/intel/dptf/dptf.c

@@ -5,18 +5,6 @@
 #include <device/device.h>
 #include "chip.h"
 
-enum dptf_participant {
-	DPTF_NONE,
-	DPTF_CPU,
-	DPTF_CHARGER,
-	DPTF_FAN,
-	DPTF_TEMP_SENSOR_0,
-	DPTF_TEMP_SENSOR_1,
-	DPTF_TEMP_SENSOR_2,
-	DPTF_TEMP_SENSOR_3,
-	DPTF_PARTICIPANT_COUNT,
-};
-
 /* Generic DPTF participants have a PTYP field to distinguish them */
 enum dptf_generic_participant_type {
 	DPTF_GENERIC_PARTICIPANT_TYPE_TSR	= 0x3,
@@ -40,6 +28,17 @@ enum dptf_generic_participant_type {
 static bool is_participant_used(const struct drivers_intel_dptf_config *config,
 				enum dptf_participant participant)
 {
+	int i;
+
+	/* Active? */
+	for (i = 0; i < DPTF_MAX_ACTIVE_POLICIES; ++i)
+		if (config->policies.active[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;
+
 	return false;
 }
 
@@ -53,6 +52,9 @@ static void dptf_fill_ssdt(const struct device *dev)
 {
 	struct drivers_intel_dptf_config *config = config_of(dev);
 
+	dptf_write_active_policies(config->policies.active,
+				   DPTF_MAX_ACTIVE_POLICIES);
+
 	printk(BIOS_INFO, "\\_SB.DPTF: %s at %s\n", dev->chip_ops->name, dev_path(dev));
 }