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-rw-r--r--include/linux/mfd/rsmu.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/include/linux/mfd/rsmu.h b/include/linux/mfd/rsmu.h
new file mode 100644
index 000000000000..6870de608233
--- /dev/null
+++ b/include/linux/mfd/rsmu.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Core interface for Renesas Synchronization Management Unit (SMU) devices.
+ *
+ * Copyright (C) 2021 Integrated Device Technology, Inc., a Renesas Company.
+ */
+
+#ifndef __LINUX_MFD_RSMU_H
+#define __LINUX_MFD_RSMU_H
+
+/* The supported devices are ClockMatrix, Sabre and SnowLotus */
+enum rsmu_type {
+ RSMU_CM = 0x34000,
+ RSMU_SABRE = 0x33810,
+ RSMU_SL = 0x19850,
+};
+
+/**
+ *
+ * struct rsmu_ddata - device data structure for sub devices.
+ *
+ * @dev: i2c/spi device.
+ * @regmap: i2c/spi bus access.
+ * @lock: mutex used by sub devices to make sure a series of
+ * bus access requests are not interrupted.
+ * @type: RSMU device type.
+ * @page: i2c/spi bus driver internal use only.
+ */
+struct rsmu_ddata {
+ struct device *dev;
+ struct regmap *regmap;
+ struct mutex lock;
+ enum rsmu_type type;
+ u16 page;
+};
+#endif /* __LINUX_MFD_RSMU_H */