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-rw-r--r--src/acpi/acpigen_dptf.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/src/acpi/acpigen_dptf.c b/src/acpi/acpigen_dptf.c
index c18caf673e..6caf8bfcaf 100644
--- a/src/acpi/acpigen_dptf.c
+++ b/src/acpi/acpigen_dptf.c
@@ -12,6 +12,7 @@
enum {
ART_REVISION = 0,
DEFAULT_PRIORITY = 100,
+ DEFAULT_TRIP_POINT = 0xFFFFFFFFull,
DEFAULT_WEIGHT = 100,
DPTF_MAX_ART_THRESHOLDS = 10,
};
@@ -321,3 +322,39 @@ void dptf_write_charger_perf(const struct dptf_charger_perf *states, int max_cou
acpigen_pop_len(); /* Method PPSS */
acpigen_pop_len(); /* Scope */
}
+
+void dptf_write_fan_perf(const struct dptf_fan_perf *states, int max_count)
+{
+ char *pkg_count;
+ int i;
+
+ if (!max_count || !states[0].percent)
+ return;
+
+ dptf_write_scope(DPTF_FAN);
+
+ /* _FPS - Fan Performance States */
+ acpigen_write_name("_FPS");
+ pkg_count = acpigen_write_package(0);
+
+ for (i = 0; i < max_count; ++i) {
+ /*
+ * Some _FPS tables do include a last entry where Percent is 0, but Power is
+ * called out, so this table is finished when both are zero.
+ */
+ if (!states[i].percent && !states[i].power)
+ break;
+
+ (*pkg_count)++;
+ acpigen_write_package(5);
+ acpigen_write_integer(states[i].percent);
+ acpigen_write_integer(DEFAULT_TRIP_POINT);
+ acpigen_write_integer(states[i].speed);
+ acpigen_write_integer(states[i].noise_level);
+ acpigen_write_integer(states[i].power);
+ acpigen_pop_len(); /* inner Package */
+ }
+
+ acpigen_pop_len(); /* Package */
+ acpigen_pop_len(); /* Scope */
+}