1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/hwmon/peci-hwmon.h b/drivers/hwmon/peci-hwmon.h
new file mode 100644
index 000000000000..6ca1855a86bb
--- /dev/null
+++ b/drivers/hwmon/peci-hwmon.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2018 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
+
+/**
+ * struct temp_data - PECI temperature information
+ * @valid: flag to indicate the temperature value is valid
+ * @value: temperature value in millidegree Celsius
+ * @last_updated: time of the last update in jiffies
+ */
+struct temp_data {
+	uint  valid;
+	s32   value;
+	ulong last_updated;
+};
+
+/**
+ * peci_temp_need_update - check whether temperature update is needed or not
+ * @temp: pointer to temperature data struct
+ *
+ * Return: true if update is needed, false if not.
+ */
+static inline bool peci_temp_need_update(struct temp_data *temp)
+{
+	if (temp->valid &&
+	    time_before(jiffies, temp->last_updated + UPDATE_INTERVAL))
+		return false;
+
+	return true;
+}
+
+/**
+ * peci_temp_mark_updated - mark the temperature is updated
+ * @temp: pointer to temperature data struct
+ */
+static inline void peci_temp_mark_updated(struct temp_data *temp)
+{
+	temp->valid = 1;
+	temp->last_updated = jiffies;
+}
+
+#endif /* __PECI_HWMON_H */