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-rw-r--r--src/acpi/acpigen_dptf.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/src/acpi/acpigen_dptf.c b/src/acpi/acpigen_dptf.c
index 59afa551a5..c8849261d6 100644
--- a/src/acpi/acpigen_dptf.c
+++ b/src/acpi/acpigen_dptf.c
@@ -9,6 +9,11 @@
/* Defaults */
#define DEFAULT_RAW_UNIT "ma"
+/* DPTF-specific UUIDs */
+#define DPTF_PASSIVE_POLICY_1_0_UUID "42A441D6-AE6A-462B-A84B-4A8CE79027D3"
+#define DPTF_CRITICAL_POLICY_UUID "97C68AE7-15FA-499c-B8C9-5DA81D606E0A"
+#define DPTF_ACTIVE_POLICY_UUID "3A95C389-E4B8-4629-A526-C52C88626BAE"
+
enum {
ART_REVISION = 0,
DEFAULT_PRIORITY = 100,
@@ -432,3 +437,40 @@ void dptf_write_tsr_hysteresis(uint8_t hysteresis)
acpigen_write_name_integer("GTSH", hysteresis);
}
+
+void dptf_write_enabled_policies(const struct dptf_active_policy *active_policies,
+ int active_count,
+ const struct dptf_passive_policy *passive_policies,
+ int passive_count,
+ const struct dptf_critical_policy *critical_policies,
+ int critical_count)
+{
+ bool is_active_used;
+ bool is_passive_used;
+ bool is_critical_used;
+ int pkg_count;
+
+ is_active_used = (active_count && active_policies[0].target != DPTF_NONE);
+ is_passive_used = (passive_count && passive_policies[0].target != DPTF_NONE);
+ is_critical_used = (critical_count && critical_policies[0].source != DPTF_NONE);
+ pkg_count = is_active_used + is_passive_used + is_critical_used;
+
+ if (!pkg_count)
+ return;
+
+ acpigen_write_scope(TOPLEVEL_DPTF_SCOPE);
+ acpigen_write_name("IDSP");
+ acpigen_write_package(pkg_count);
+
+ if (is_active_used)
+ acpigen_write_uuid(DPTF_ACTIVE_POLICY_UUID);
+
+ if (is_passive_used)
+ acpigen_write_uuid(DPTF_PASSIVE_POLICY_1_0_UUID);
+
+ if (is_critical_used)
+ acpigen_write_uuid(DPTF_CRITICAL_POLICY_UUID);
+
+ acpigen_pop_len(); /* Package */
+ acpigen_pop_len(); /* Scope */
+}