1 files changed, 161 insertions, 0 deletions
diff --git a/include/drivers/brcm/i2c/i2c.h b/include/drivers/brcm/i2c/i2c.h
new file mode 100644
index 000000000..24d42e208
--- /dev/null
+++ b/include/drivers/brcm/i2c/i2c.h
@@ -0,0 +1,161 @@
+/*
+ * Copyright (c) 2016 - 2021, Broadcom
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef I2C_H
+#define I2C_H
+
+#include <stdint.h>
+
+#define I2C_SPEED_100KHz	100000
+#define I2C_SPEED_400KHz	400000
+#define I2C_SPEED_DEFAULT	I2C_SPEED_100KHz
+
+/*
+ * Function Name:    i2c_probe
+ *
+ * Description:
+ *	This function probes the I2C bus for the existence of the specified
+ *	device.
+ *
+ * Parameters:
+ *	bus_id  - I2C bus ID
+ *	devaddr - Device Address
+ *
+ * Return:
+ *	0 on success, or -1 on failure.
+ */
+int i2c_probe(uint32_t bus_id, uint8_t devaddr);
+
+/*
+ * Function Name:    i2c_init
+ *
+ * Description:
+ *	This function initializes the SMBUS.
+ *
+ * Parameters:
+ *	bus_id - I2C bus ID
+ *	speed  - I2C bus speed in Hz
+ *
+ * Return:
+ *	0 on success, or -1 on failure.
+ */
+int i2c_init(uint32_t bus_id, int speed);
+
+/*
+ * Function Name:    i2c_set_bus_speed
+ *
+ * Description:
+ *	This function configures the SMBUS speed
+ *
+ * Parameters:
+ *	bus_id - I2C bus ID
+ *	speed  - I2C bus speed in Hz
+ *
+ * Return:
+ *	0 on success, or -1 on failure.
+ */
+int i2c_set_bus_speed(uint32_t bus_id, uint32_t speed);
+
+/*
+ * Function Name:    i2c_get_bus_speed
+ *
+ * Description:
+ *	This function returns the SMBUS speed.
+ *
+ * Parameters:
+ *	bus_id - I2C bus ID
+ *
+ * Return:
+ *	Bus speed in Hz, 0 on failure
+ */
+uint32_t i2c_get_bus_speed(uint32_t bus_id);
+
+/*
+ * Function Name:    i2c_recv_byte
+ *
+ * Description:
+ *	This function reads I2C data from a device without specifying
+ *	a command regsiter.
+ *
+ * Parameters:
+ *	bus_id  - I2C bus ID
+ *	devaddr - Device Address
+ *	value   - Data Read
+ *
+ * Return:
+ *	0 on success, or -1 on failure.
+ */
+int i2c_recv_byte(uint32_t bus_id, uint8_t devaddr, uint8_t *value);
+
+/*
+ * Function Name:    i2c_send_byte
+ *
+ * Description:
+ *	This function send I2C data to a device without specifying
+ *	a command regsiter.
+ *
+ * Parameters:
+ *	bus_id  - I2C bus ID
+ *	devaddr - Device Address
+ *	value   - Data Send
+ *
+ * Return:
+ *	0 on success, or -1 on failure.
+ */
+int i2c_send_byte(uint32_t bus_id, uint8_t devaddr, uint8_t value);
+
+/*
+ * Function Name:    i2c_read
+ *
+ * Description:
+ *	This function reads I2C data from a device with a designated
+ *	command register
+ *
+ * Parameters:
+ *	bus_id  - I2C bus ID
+ *	devaddr - Device Address
+ *	addr    - Register Offset
+ *	alen    - Address Length, 1 for byte, 2 for word (not supported)
+ *	buffer  - Data Buffer
+ *	len     - Data Length in bytes
+ *
+ * Return:
+ *	0 on success, or -1 on failure.
+ */
+int i2c_read(uint32_t bus_id,
+	     uint8_t devaddr,
+	     uint32_t addr,
+	     int alen,
+	     uint8_t *buffer,
+	     int len);
+
+/*
+ * Function Name:    i2c_write
+ *
+ * Description:
+ *	This function write I2C data to a device with a designated
+ *	command register
+ *
+ * Parameters:
+ *	bus_id  - I2C bus ID
+ *	devaddr - Device Address
+ *	addr    - Register Offset
+ *	alen    - Address Length, 1 for byte, 2 for word (not supported)
+ *	buffer  - Data Buffer
+ *	len     - Data Length in bytes
+ *
+ * Return:
+ *	0 on success, or -1 on failure.
+ */
+int i2c_write(uint32_t bus_id,
+	      uint8_t devaddr,
+	      uint32_t addr,
+	      int alen,
+	      uint8_t *buffer,
+	      int len);
+
+
+#endif /* I2C_H */