1 files changed, 64 insertions, 0 deletions

diff --git a/firmware/export/i2c-coldfire.h b/firmware/export/i2c-coldfire.h
new file mode 100644
index 0000000000..d4a5781116
--- /dev/null
+++ b/firmware/export/i2c-coldfire.h
@@ -0,0 +1,64 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Linus Nielsen Feltzing
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+/*
+ *  Driver for MCF52xx's I2C interface
+ *  2005-02-17 hubble@mochine.com
+ *
+ */
+ 
+#ifndef _I2C_COLDFIRE_H
+#define _I2C_COLDFIRE_H
+
+void i2c_init(void);
+int i2c_write(int device, unsigned char *buf, int count);
+void i2c_close(void);
+
+
+#define MAX_LOOP    0x100     /* TODO: select a better value */
+
+/* PLLCR control */
+#define QSPISEL (1 << 11)               /* Selects QSPI or I2C interface */
+
+/* Offsets to I2C registers from base address */
+#define O_MADR  0x00            /* Slave Address        */
+#define O_MFDR  0x04            /* Frequency divider    */
+#define O_MBCR  0x08            /* Control register     */
+#define O_MBSR  0x0c            /* Status register      */
+#define O_MBDR  0x10            /* Data register        */
+
+/* MBSR - Status register */
+#define ICF     (1 << 7)        /* Transfer Complete    */
+#define IAAS    (1 << 6)        /* Addressed As Alave   */
+#define IBB     (1 << 5)        /* Bus Busy                     */
+#define IAL     (1 << 4)        /* Arbitration Lost         */
+#define SRW     (1 << 2)        /* Slave R/W                */
+#define IFF     (1 << 1)        /* I2C Interrupt            */
+#define RXAK    (1 << 0)        /* No Ack bit               */
+
+/* MBCR - Control register */
+#define IEN     (1 << 7)                /* I2C Enable               */
+#define IIEN    (1 << 6)                /* Interrupt Enable         */
+#define MSTA    (1 << 5)                /* Master/Slave select  */
+#define MTX     (1 << 4)                /* Transmit/Receive         */
+#define TXAK    (1 << 3)                /* Transfer ACK             */
+#define RSTA    (1 << 2)                /* Restart..                */
+
+
+#endif