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-rw-r--r--cpu/mpc824x/drivers/i2c/Makefile84
-rw-r--r--cpu/mpc824x/drivers/i2c/Makefile_pc91
-rw-r--r--cpu/mpc824x/drivers/i2c/README105
-rw-r--r--cpu/mpc824x/drivers/i2c/i2c_export.h103
4 files changed, 383 insertions, 0 deletions
diff --git a/cpu/mpc824x/drivers/i2c/Makefile b/cpu/mpc824x/drivers/i2c/Makefile
new file mode 100644
index 0000000..ae1a94c
--- /dev/null
+++ b/cpu/mpc824x/drivers/i2c/Makefile
@@ -0,0 +1,84 @@
+##########################################################################
+#
+# Copyright Motorola, Inc. 1997
+# ALL RIGHTS RESERVED
+#
+# You are hereby granted a copyright license to use, modify, and
+# distribute the SOFTWARE so long as this entire notice is retained
+# without alteration in any modified and/or redistributed versions,
+# and that such modified versions are clearly identified as such.
+# No licenses are granted by implication, estoppel or otherwise under
+# any patents or trademarks of Motorola, Inc.
+#
+# The SOFTWARE is provided on an "AS IS" basis and without warranty.
+# To the maximum extent permitted by applicable law, MOTOROLA DISCLAIMS
+# ALL WARRANTIES WHETHER EXPRESS OR IMPLIED, INCLUDING IMPLIED
+# WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
+# PURPOSE AND ANY WARRANTY AGAINST INFRINGEMENT WITH
+# REGARD TO THE SOFTWARE (INCLUDING ANY MODIFIED VERSIONS
+# THEREOF) AND ANY ACCOMPANYING WRITTEN MATERIALS.
+#
+# To the maximum extent permitted by applicable law, IN NO EVENT SHALL
+# MOTOROLA BE LIABLE FOR ANY DAMAGES WHATSOEVER
+# (INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF
+# BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS
+# INFORMATION, OR OTHER PECUNIARY LOSS) ARISING OF THE USE OR
+# INABILITY TO USE THE SOFTWARE.
+#
+############################################################################
+TARGET = libi2c.a
+
+#DEBUG = -g
+DEBUG = -DI2CDBG
+LST = -Hanno -S
+OPTIM =
+CC = /risc/tools/pkgs/metaware/bin/hcppc
+CFLAGS = -Hnocopyr -c -Hsds -Hon=Char_default_unsigned -Hon=Char_is_rep -I../inc -I/risc/tools/pkgs/metaware/inc
+CCobj = $(CC) $(CFLAGS) $(DEBUG) $(OPTIM)
+PREP = $(CC) $(CFLAGS) -P
+
+# Assembler used to build the .s files (for the board version)
+
+ASOPT = -big_si -c
+ASDEBUG = -l -fm
+AS = /risc/tools/pkgs/metaware/bin/asppc
+
+# Linker to bring .o files together into an executable.
+
+LKOPT = -Bbase=0 -q -Qn -r
+LKCMD =
+LINK = /risc/tools/pkgs/metaware/bin/ldppc $(LKCMD) $(LKOPT)
+
+# DOS Utilities
+
+DEL = rm
+COPY = cp
+LIST = ls
+
+OBJECTS = i2c1.o i2c2.o
+
+all: $(TARGET)
+
+objects: $(OBJECTS)
+
+$(TARGET): $(OBJECTS)
+ $(LINK) $(OBJECTS) -o $@
+
+clean:
+ $(DEL) -f *.o *.i *.map *.lst $(TARGET) $(OBJECTS)
+
+.s.o:
+ $(DEL) -f $*.i
+ $(PREP) -Hasmcpp $<
+ $(AS) $(ASOPT) $*.i
+# $(AS) $(ASOPT) $(ASDEBUG) $*.i > $*.lst
+
+.c.o:
+ $(CCobj) $<
+
+.c.s:
+ $(CCobj) $(LST) $<
+
+i2c1.o: i2c_export.h i2c.h i2c1.c
+
+i2c2.o: i2c.h i2c2.s
diff --git a/cpu/mpc824x/drivers/i2c/Makefile_pc b/cpu/mpc824x/drivers/i2c/Makefile_pc
new file mode 100644
index 0000000..4d42c7b
--- /dev/null
+++ b/cpu/mpc824x/drivers/i2c/Makefile_pc
@@ -0,0 +1,91 @@
+##########################################################################
+#
+# makefile_pc for use with PC mksnt tools dink32/drivers/i2c
+#
+# Copyright Motorola, Inc. 1997
+# ALL RIGHTS RESERVED
+#
+# You are hereby granted a copyright license to use, modify, and
+# distribute the SOFTWARE so long as this entire notice is retained
+# without alteration in any modified and/or redistributed versions,
+# and that such modified versions are clearly identified as such.
+# No licenses are granted by implication, estoppel or otherwise under
+# any patents or trademarks of Motorola, Inc.
+#
+# The SOFTWARE is provided on an "AS IS" basis and without warranty.
+# To the maximum extent permitted by applicable law, MOTOROLA DISCLAIMS
+# ALL WARRANTIES WHETHER EXPRESS OR IMPLIED, INCLUDING IMPLIED
+# WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
+# PURPOSE AND ANY WARRANTY AGAINST INFRINGEMENT WITH
+# REGARD TO THE SOFTWARE (INCLUDING ANY MODIFIED VERSIONS
+# THEREOF) AND ANY ACCOMPANYING WRITTEN MATERIALS.
+#
+# To the maximum extent permitted by applicable law, IN NO EVENT SHALL
+# MOTOROLA BE LIABLE FOR ANY DAMAGES WHATSOEVER
+# (INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF
+# BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS
+# INFORMATION, OR OTHER PECUNIARY LOSS) ARISING OF THE USE OR
+# INABILITY TO USE THE SOFTWARE.
+#
+############################################################################
+TARGET = libi2c.a
+
+#DEBUG = -g
+DEBUG = -DI2CDBG
+LST = -Hanno -S
+OPTIM =
+CC = m:/old_tools/tools/hcppc/bin/hcppc
+CFLAGS = -Hnocopyr -c -Hsds -Hon=Char_default_unsigned -Hon=Char_is_rep -I../inc -I/risc/tools/pkgs/metaware/inc
+CCobj = $(CC) $(CFLAGS) $(DEBUG) $(OPTIM)
+PREP = $(CC) $(CFLAGS) -P
+
+# Assembler used to build the .s files (for the board version)
+
+ASOPT = -big_si -c
+ASDEBUG = -l -fm
+AS = m:/old_tools/tools/hcppc/bin/asppc
+
+# Linker to bring .o files together into an executable.
+
+LKOPT = -Bbase=0 -q -Qn -r
+LKCMD =
+LINK = m:/old_tools/tools/hcppc/bin/ldppc $(LKCMD) $(LKOPT)
+
+# DOS Utilities
+
+DEL = rm
+COPY = cp
+LIST = ls
+
+OBJECTS = i2c1.o i2c2.o
+
+all: $(TARGET)
+
+objects: $(OBJECTS)
+
+$(TARGET): $(OBJECTS)
+ $(LINK) $(OBJECTS) -o $@
+
+clean:
+ $(DEL) -f *.o *.i *.map *.lst $(TARGET) $(OBJECTS)
+
+.s.o:
+ $(DEL) -f $*.i
+ $(PREP) -Hasmcpp $<
+ $(AS) $(ASOPT) $*.i
+# $(AS) $(ASOPT) $(ASDEBUG) $*.i > $*.lst
+
+.c.o:
+ $(CCobj) $<
+
+.c.s:
+ $(CCobj) $(LST) $<
+
+i2c1.o: i2c_export.h i2c.h i2c1.c
+ $(CCobj) $<
+
+
+i2c2.o: i2c.h i2c2.s
+ $(DEL) -f $*.i
+ $(PREP) -Hasmcpp $<
+ $(AS) $(ASOPT) $*.i
diff --git a/cpu/mpc824x/drivers/i2c/README b/cpu/mpc824x/drivers/i2c/README
new file mode 100644
index 0000000..8d82df3
--- /dev/null
+++ b/cpu/mpc824x/drivers/i2c/README
@@ -0,0 +1,105 @@
+CONTENT:
+
+ i2c.h
+ i2c1.c
+ i2c2.s
+
+WHAT ARE THESE FILES:
+
+These files contain MPC8240 (Kahlua) I2C
+driver routines. The driver routines are not
+written for any specific operating system.
+They serves the purpose of code sample, and
+jump-start for using the MPC8240 I2C unit.
+
+For the reason of correctness of C language
+syntax, these files are compiled by Metaware
+C compiler and assembler.
+
+ENDIAN NOTATION:
+
+The algorithm is designed for big-endian mode,
+software is responsible for byte swapping.
+
+USAGE:
+
+1. The host system that is running on MPC8240
+ shall link the files listed here. The memory
+ location of driver routines shall take into
+ account of that driver routines need to run
+ in supervisor mode and they process I2C
+ interrupt.
+
+2. The host system is responsible for configuring
+ the MPC8240 including Embedded Utilities Memory
+ Block. All I2C driver functions require the
+ content of Embedded Utilities Memory Block
+ Base Address Register, EUMBBAR, as the first
+ parameter.
+
+3. Before I2C unit of MPC8240 can be used,
+ initialize I2C unit by calling I2C_Init
+ with the corresponding parameters.
+
+ Note that the I2CFDR register shall be written
+ once during the initialization. If it is written
+ in the midst of transers, or after I2C STOPs or
+ REPEAT STATRs, depending on the data written,
+ a long reset time may be encountered.
+
+4. After I2C unit has been successfully initialized,
+ use the Application level API to send data or
+ receive data upon the desired mode, Master or
+ Slave.
+
+5. If the host system is also using the EPIC unit
+ on MPC8240, the system can register the
+ I2C_ISR with the EPIC including other
+ desired resources.
+
+ If the host system does not using the EPIC unit
+ on MPC8240, I2C_Timer_Event function can
+ be called for each desired time interval.
+
+ In both cases, the host system is free to provide
+ its own timer event handler and interrupt service
+ routine.
+
+6. The I2C driver routines contains a set
+ of utilities, Set and Get, for host system
+ to query and modify the desired I2C registers.
+
+7. It is the host system's responsibility of
+ queueing the I2C I/O request. The host
+ system shall check the I2C_ISR return code
+ for I2C I/O status. If I2C_ISR returns
+ I2CBUFFEMPTY or I2CBUFFFULL, it means
+ I2C unit has completed a I/O request
+ stated by the Application API.
+
+8. If the host system has more than one master
+ mode I2C unit I/O requests but doesn't want
+ to be intervented by being addressed as slave,
+ the host system can use the master mode
+ Application API with stop_flag set to 0 in
+ conjunction with is_cnt flag set to 1.
+ The first API call sets both stop_flag and
+ is_cnt to 0, indicating a START condition
+ shall be generated but when the end of
+ transaction is reached, do not generate a
+ STOP condition. Once the host system is
+ informed that the transaction has been
+ completed, the next Application API call
+ shall set is_cnt flag to 1, indicating a
+ repeated START condition shall be generated.
+ The last Application API call shall set
+ stop_flag
+ to 1.
+
+9. The I2C_Timer_Event function containes
+ a user defined function pointer. It
+ serves the purpose of providing the
+ host system a way to use its own event
+ handler instead of the I2C_ISR provided
+ here.
+
diff --git a/cpu/mpc824x/drivers/i2c/i2c_export.h b/cpu/mpc824x/drivers/i2c/i2c_export.h
new file mode 100644
index 0000000..17403ea
--- /dev/null
+++ b/cpu/mpc824x/drivers/i2c/i2c_export.h
@@ -0,0 +1,103 @@
+#ifndef I2C_EXPORT_H
+#define I2C_EXPORT_H
+
+/****************************************************
+ *
+ * Copyright Motrola 1999
+ *
+ ****************************************************/
+
+/* These are the defined return values for the I2C_do_transaction function.
+ * Any non-zero value indicates failure. Failure modes can be added for
+ * more detailed error reporting.
+ */
+typedef enum _i2c_status
+{
+ I2C_SUCCESS = 0,
+ I2C_ERROR,
+} I2C_Status;
+
+/* These are the defined tasks for I2C_do_transaction.
+ * Modes for SLAVE_RCV and SLAVE_XMIT will be added.
+ */
+typedef enum _i2c_transaction_mode
+{
+ I2C_MASTER_RCV = 0,
+ I2C_MASTER_XMIT = 1,
+} I2C_TRANSACTION_MODE;
+
+typedef enum _i2c_interrupt_mode
+{
+ I2C_INT_DISABLE = 0,
+ I2C_INT_ENABLE = 1,
+} I2C_INTERRUPT_MODE;
+
+typedef enum _i2c_stop
+{
+ I2C_NO_STOP = 0,
+ I2C_STOP = 1,
+} I2C_STOP_MODE;
+
+typedef enum _i2c_restart
+{
+ I2C_NO_RESTART = 0,
+ I2C_RESTART = 1,
+} I2C_RESTART_MODE;
+
+/******************** App. API ********************
+ * The application API is for user level application
+ * to use the functionality provided by I2C driver.
+ * This is a "generic" I2C interface, it should contain
+ * nothing specific to the Kahlua implementation.
+ * Only the generic functions are exported by the library.
+ *
+ * Note: Its App.s responsibility to swap the data
+ * byte. In our API, we just transfer whatever
+ * we are given
+ **************************************************/
+
+
+/* Initialize I2C unit with the following:
+ * driver's slave address
+ * interrupt enabled
+ * optional pointer to application layer print function
+ *
+ * These parameters may be added:
+ * desired clock rate
+ * digital filter frequency sampling rate
+ *
+ * This function must be called before I2C unit can be used.
+ */
+extern I2C_Status I2C_Initialize(
+ unsigned char addr, /* driver's I2C slave address */
+ I2C_INTERRUPT_MODE en_int, /* 1 - enable I2C interrupt
+ * 0 - disable I2C interrupt
+ */
+ int (*app_print_function)(char *,...)); /* pointer to optional "printf"
+ * provided by application
+ */
+
+/* Perform the given I2C transaction, only MASTER_XMIT and MASTER_RCV
+ * are implemented. Both are only in polling mode.
+ *
+ * en_int controls interrupt/polling mode
+ * act is the type of transaction
+ * addr is the I2C address of the slave device
+ * len is the length of data to send or receive
+ * buffer is the address of the data buffer
+ * stop = I2C_NO_STOP, don't signal STOP at end of transaction
+ * I2C_STOP, signal STOP at end of transaction
+ * retry is the timeout retry value, currently ignored
+ * rsta = I2C_NO_RESTART, this is not continuation of existing transaction
+ * I2C_RESTART, this is a continuation of existing transaction
+ */
+extern I2C_Status I2C_do_transaction( I2C_INTERRUPT_MODE en_int,
+ I2C_TRANSACTION_MODE act,
+ unsigned char i2c_addr,
+ unsigned char data_addr,
+ int len,
+ char *buffer,
+ I2C_STOP_MODE stop,
+ int retry,
+ I2C_RESTART_MODE rsta);
+#endif
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