1 files changed, 42 insertions, 0 deletions
diff --git a/include/linux/mfd/rsmu.h b/include/linux/mfd/rsmu.h
new file mode 100644
index 000000000000..f8a4ba8dcc9d
--- /dev/null
+++ b/include/linux/mfd/rsmu.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Multi-function driver for the IDT ClockMatrix(TM) and 82p33xxx families of
+ * timing and synchronization devices.
+ *
+ * Copyright (C) 2019 Integrated Device Technology, Inc., a Renesas Company.
+ */
+
+#ifndef __LINUX_MFD_RSMU_H
+#define __LINUX_MFD_RSMU_H
+
+/* We only support Clockmatrix and Sabre now */
+enum rsmu_type {
+	RSMU_CM		= 0,
+	RSMU_SABRE	= 1,
+	RSMU_NONE	= 2,
+};
+
+/**
+ *
+ * struct rsmu_pdata - platform data structure for MFD cell devices.
+ *
+ * @lock: Mutex used by cell devices to make sure a series of requests
+ * are not interrupted.
+ *
+ * @type: RSMU device type.
+ *
+ * @index: Device index.
+ */
+struct rsmu_pdata {
+	enum rsmu_type type;
+	struct mutex *lock;
+	u8 index;
+};
+
+/**
+ * NOTE: the functions below are not intended for use outside
+ * of the IDT synchronization management unit drivers
+ */
+extern int rsmu_write(struct device *dev, u16 reg, u8 *buf, u16 size);
+extern int rsmu_read(struct device *dev, u16 reg, u8 *buf, u16 size);
+#endif /*  __LINUX_MFD_RSMU_H */