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-rw-r--r--include/drivers/mentor/mi2cv.h40
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diff --git a/include/drivers/mentor/mi2cv.h b/include/drivers/mentor/mi2cv.h
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+++ b/include/drivers/mentor/mi2cv.h
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+/*
+ * Copyright (C) 2018 Marvell International Ltd.
+ * Copyright (C) 2018 Icenowy Zheng <icenowy@aosc.io>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * https://spdx.org/licenses
+ */
+
+/* This driver provides support for Mentor Graphics MI2CV IP core */
+
+#ifndef MI2CV_H
+#define MI2CV_H
+
+#include <stdint.h>
+
+/*
+ * Initialization, must be called once on start up, may be called
+ * repeatedly to change the speed and slave addresses.
+ */
+void i2c_init(void *i2c_base);
+
+/*
+ * Read/Write interface:
+ * chip: I2C chip address, range 0..127
+ * addr: Memory (register) address within the chip
+ * alen: Number of bytes to use for addr (typically 1, 2 for larger
+ * memories, 0 for register type devices with only one
+ * register)
+ * buffer: Where to read/write the data
+ * len: How many bytes to read/write
+ *
+ * Returns: 0 on success, not 0 on failure
+ */
+int i2c_read(uint8_t chip,
+ unsigned int addr, int alen, uint8_t *buffer, int len);
+
+int i2c_write(uint8_t chip,
+ unsigned int addr, int alen, uint8_t *buffer, int len);
+
+#endif /* MI2CV_H */