Add a new field to struct cf_setting for special values. These are driver-

specific values that other components may want to use.  Add support to
acpi_perf(4) to export the control and status values via this field.

1 files changed, 7 insertions, 1 deletions

diff --git a/sys/dev/acpica/acpi_perf.c b/sys/dev/acpica/acpi_perf.c
index 539a06a..040f2d5 100644
--- a/sys/dev/acpica/acpi_perf.c
+++ b/sys/dev/acpica/acpi_perf.c
@@ -64,7 +64,11 @@ struct acpi_px {
 	uint32_t	 sts_val;
 };
 
-#define MAX_PX_STATES	 16
+/* Offsets in struct cf_setting array for storing driver-specific values. */
+#define PX_SPEC_CONTROL	0
+#define PX_SPEC_STATUS	1
+
+#define MAX_PX_STATES	16
 
 struct acpi_perf_softc {
 	device_t	 dev;
@@ -389,6 +393,8 @@ acpi_px_to_set(device_t dev, struct acpi_px *px, struct cf_setting *set)
 	set->lat = px->trans_lat;
 	set->volts = CPUFREQ_VAL_UNKNOWN;
 	set->dev = dev;
+	set->spec[PX_SPEC_CONTROL] = px->ctrl_val;
+	set->spec[PX_SPEC_STATUS] = px->sts_val;
 
 	return (0);
 }