1 files changed, 84 insertions, 0 deletions
diff --git a/include/i2c_eeprom.h b/include/i2c_eeprom.h
new file mode 100644
index 00000000000..1fe32d2dd68
--- /dev/null
+++ b/include/i2c_eeprom.h
@@ -0,0 +1,84 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2014 Google, Inc
+ */
+
+#ifndef __I2C_EEPROM
+#define __I2C_EEPROM
+
+#include <linux/errno.h>
+#include <linux/types.h>
+
+struct udevice;
+
+struct i2c_eeprom_ops {
+	int (*read)(struct udevice *dev, int offset, uint8_t *buf, int size);
+	int (*write)(struct udevice *dev, int offset, const uint8_t *buf,
+		     int size);
+	int (*size)(struct udevice *dev);
+};
+
+struct i2c_eeprom {
+	/* The EEPROM's page size in byte */
+	unsigned long pagesize;
+	/* The EEPROM's capacity in bytes */
+	unsigned long size;
+};
+
+#if CONFIG_IS_ENABLED(I2C_EEPROM)
+/*
+ * i2c_eeprom_read() - read bytes from an I2C EEPROM chip
+ *
+ * @dev:	Chip to read from
+ * @offset:	Offset within chip to start reading
+ * @buf:	Place to put data
+ * @size:	Number of bytes to read
+ *
+ * Return: 0 on success, -ve on failure
+ */
+int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size);
+
+/*
+ * i2c_eeprom_write() - write bytes to an I2C EEPROM chip
+ *
+ * @dev:	Chip to write to
+ * @offset:	Offset within chip to start writing
+ * @buf:	Buffer containing data to write
+ * @size:	Number of bytes to write
+ *
+ * Return: 0 on success, -ve on failure
+ */
+int i2c_eeprom_write(struct udevice *dev, int offset, const uint8_t *buf,
+		     int size);
+
+/*
+ * i2c_eeprom_size() - get size of I2C EEPROM chip
+ *
+ * @dev:	Chip to query
+ *
+ * Return: +ve size in bytes on success, -ve on failure
+ */
+int i2c_eeprom_size(struct udevice *dev);
+
+#else /* !I2C_EEPROM */
+
+static inline int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf,
+				  int size)
+{
+	return -ENOSYS;
+}
+
+static inline int i2c_eeprom_write(struct udevice *dev, int offset,
+				   const uint8_t *buf, int size)
+{
+	return -ENOSYS;
+}
+
+static inline int i2c_eeprom_size(struct udevice *dev)
+{
+	return -ENOSYS;
+}
+
+#endif /* I2C_EEPROM */
+
+#endif