+/* /dev/i2c-X ioctl commands. The ioctl's parameter is always an
+ * unsigned long, except for:
+ * - I2C_FUNCS, takes pointer to an unsigned long
+ * - I2C_RDWR, takes pointer to struct i2c_rdwr_ioctl_data
+ * - I2C_SMBUS, takes pointer to struct i2c_smbus_ioctl_data
+ */
+#define I2C_RETRIES 0x0701 /* number of times a device address should
+ be polled when not acknowledging */
+#define I2C_TIMEOUT 0x0702 /* set timeout in jiffies - call with int */
+
+/* NOTE: Slave address is 7 or 10 bits, but 10-bit addresses
+ * are NOT supported! (due to code brokenness)
+ */
+#define I2C_SLAVE 0x0703 /* Use this slave address */
+#define I2C_SLAVE_FORCE 0x0706 /* Use this slave address, even if it
+ is already in use by a driver! */
+#define I2C_TENBIT 0x0704 /* 0 for 7 bit addrs, != 0 for 10 bit */
+
+#define I2C_FUNCS 0x0705 /* Get the adapter functionality mask */
+
+#define I2C_RDWR 0x0707 /* Combined R/W transfer (one STOP only) */
+
+#define I2C_PEC 0x0708 /* != 0 to use PEC with SMBus */
+#define I2C_SMBUS 0x0720 /* SMBus transfer */
+