1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/hwmon/peci-hwmon.h b/drivers/hwmon/peci-hwmon.h
new file mode 100644
index 000000000000..4d78c528c4c8
--- /dev/null
+++ b/drivers/hwmon/peci-hwmon.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2018-2019 Intel Corporation */
+
+#ifndef __PECI_HWMON_H
+#define __PECI_HWMON_H
+
+#include <linux/peci.h>
+
+#define TEMP_TYPE_PECI			6 /* Sensor type 6: Intel PECI */
+#define UPDATE_INTERVAL			HZ
+
+#define PECI_HWMON_LABEL_STR_LEN	10
+
+/**
+ * struct peci_sensor_data - PECI sensor information
+ * @valid: flag to indicate the sensor value is valid
+ * @value: sensor value in millidegree Celsius
+ * @last_updated: time of the last update in jiffies
+ */
+struct peci_sensor_data {
+	uint  valid;
+	s32   value;
+	ulong last_updated;
+};
+
+/**
+ * peci_sensor_need_update - check whether sensor update is needed or not
+ * @sensor: pointer to sensor data struct
+ *
+ * Return: true if update is needed, false if not.
+ */
+static inline bool peci_sensor_need_update(struct peci_sensor_data *sensor)
+{
+	return !sensor->valid ||
+	       time_after(jiffies, sensor->last_updated + UPDATE_INTERVAL);
+}
+
+/**
+ * peci_sensor_mark_updated - mark the sensor is updated
+ * @sensor: pointer to sensor data struct
+ */
+static inline void peci_sensor_mark_updated(struct peci_sensor_data *sensor)
+{
+	sensor->valid = 1;
+	sensor->last_updated = jiffies;
+}
+
+#endif /* __PECI_HWMON_H */