- obsolete

[packages/kernel.git] / linux-2.4.25-i2c-2.8.3-1.patch

diff -urN linux-2.4.24.org/Documentation/Configure.help linux-2.4.24/Documentation/Configure.help
--- linux-2.4.24.org/Documentation/Configure.help       2004-02-04 22:35:48.287889651 +0100
+++ linux-2.4.24/Documentation/Configure.help   2004-02-04 22:36:36.607840921 +0100
@@ -20127,6 +20127,16 @@
   <file:Documentation/modules.txt>.
   The module will be called i2c-velleman.o.
 
+Basic I2C on Parallel Port adapter
+CONFIG_I2C_PPORT
+  This supports directly connecting I2C devices to the parallel port.
+  See <file:Documentation/i2c/i2c-pport> for more information.
+
+  This driver is also available as a module.  If you want to compile
+  it as a module, say M here and read
+  <file:Documentation/modules.txt>.
+  The module will be called i2c-pport.o.
+
 I2C PCF 8584 interfaces
 CONFIG_I2C_ALGOPCF
   This allows you to use a range of I2C adapters called PCF adapters.
@@ -20148,6 +20158,15 @@
   <file:Documentation/modules.txt>.
   The module will be called i2c-elektor.o.
 
+PCF on the EPP Parallel Port
+CONFIG_I2C_PCFEPP
+  This supports the PCF8584 connected to the parallel port.
+
+  This driver is also available as a module.  If you want to compile
+  it as a module, say M here and read
+  <file:Documentation/modules.txt>.
+  The module will be called i2c-pcf-epp.o.
+
 ITE I2C Algorithm
 CONFIG_ITE_I2C_ALGO
   This supports the use the ITE8172 I2C interface found on some MIPS
@@ -20185,6 +20204,51 @@
   Supports the SGI interfaces like the ones found on SGI Indy VINO
   or SGI O2 MACE.
 
+Motorola 8xx I2C algorithm
+CONFIG_I2C_ALGO8XX
+  This is the algorithm that allows you to use Motorola 8xx I2C adapters.
+
+  This driver is also available as a module.  If you want to compile
+  it as a module, say M here and read
+  <file:Documentation/modules.txt>.
+  The module will be called i2c-algo-8xx.o.
+
+Motorola 8xx I2C interface
+CONFIG_I2C_RPXLITE
+  This supports the Motorola 8xx I2C device.
+
+  This driver is also available as a module.  If you want to compile
+  it as a module, say M here and read
+  <file:Documentation/modules.txt>.
+  The module will be called i2c-rpx.o.
+
+IBM 405 I2C algorithm
+CONFIG_I2C_IBM_OCP_ALGO
+  This is the algorithm that allows you to use IBM 405 I2C adapters.
+
+  This driver is also available as a module.  If you want to compile
+  it as a module, say M here and read
+  <file:Documentation/modules.txt>.
+  The module will be called i2c-algo-ibm_ocp.o.
+
+IBM 405 I2C interface
+CONFIG_I2C_IBM_OCP_ADAP
+  This supports the IBM 405 I2C device.
+
+  This driver is also available as a module.  If you want to compile
+  it as a module, say M here and read
+  <file:Documentation/modules.txt>.
+  The module will be called i2c-adap-ibm_ocp.o.
+
+StrongARM SA-1110 interface
+CONFIG_I2C_FRODO
+  This supports the StrongARM SA-1110 Development Board.
+
+  This driver is also available as a module.  If you want to compile
+  it as a module, say M here and read
+  <file:Documentation/modules.txt>.
+  The module will be called i2c-frodo.o.
+
 I2C device interface
 CONFIG_I2C_CHARDEV
   Say Y here to use i2c-* device files, usually found in the /dev
diff -urN linux-2.4.24.org/Documentation/i2c/dev-interface linux-2.4.24/Documentation/i2c/dev-interface
--- linux-2.4.24.org/Documentation/i2c/dev-interface    2004-02-04 22:35:46.529255353 +0100
+++ linux-2.4.24/Documentation/i2c/dev-interface        2004-02-04 22:36:36.612839881 +0100
@@ -89,6 +89,11 @@
   Selects ten bit addresses if select not equals 0, selects normal 7 bit
   addresses if select equals 0. Default 0.
 
+ioctl(file,I2C_PEC,long select)
+  Selects SMBus PEC (packet error checking) generation and verification
+  if select not equals 0, disables if select equals 0. Default 0.
+  Used only for SMBus transactions.
+
 ioctl(file,I2C_FUNCS,unsigned long *funcs)
   Gets the adapter functionality and puts it in *funcs.
 
diff -urN linux-2.4.24.org/Documentation/i2c/i2c-pport linux-2.4.24/Documentation/i2c/i2c-pport
--- linux-2.4.24.org/Documentation/i2c/i2c-pport        1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.24/Documentation/i2c/i2c-pport    2004-02-04 22:36:36.619838425 +0100
@@ -0,0 +1,67 @@
+Parallel Port Adapters
+----------------------
+If you are installing parallel port adapters it means you are probably messing 
+around with wires and IC's and the like. If you have purchased a card that 
+provides an external i2c/smbus this will require combined algorithm and 
+adapter code in a single module.
+If you are doing it yourself by using the parallel port there 
+are basically 2 options.
+
+1) Using the parallel port and using the i2c-pport adapter module and the 
+i2c-algo-bit algorithm module together to enable you to wire up your parallel 
+port to act as an i2c/smbus. This provides a bus that will enable most 
+sensors to work but doesn't support the entire i2c/smbus capability.
+
+2) Using the parallel port to interface to a Philips PCF8584 parallel to i2c 
+adapter chip. You will need to build a bit of a circuit to do this. This 
+configuration needs the i2c-pcf-epp adapter module and the i2c-algo-pcf 
+algorithm module. This support almost all of the i2c/smbus capabilities.
+
+
+i2c-pport Documentation
+-----------------------
+This is a primitive parallel port driver for the i2c bus, which exploits 
+features of modern bidirectional parallel ports. 
+
+Bidirectional ports have particular bits connected in following way:
+   
+                        |
+            /-----|     R
+         --o|     |-----|
+      read  \-----|     /------- Out pin
+                      |/
+                   - -|\
+                write   V
+                        |
+                       ---  
+
+
+It means when output is set to 1 we can read the port. Therefore 
+we can use 2 pins of parallel port as SDA and SCL for i2c bus. It 
+is not necessary to add any external - additional parts, we can 
+read and write the same port simultaneously.
+       I only use register base+2 so it is possible to use all 
+8 data bits of parallel port for other applications (I have 
+connected EEPROM and LCD display). I do not use bit Enable Bi-directional
+ Port. The only disadvantage is we can only support 5V chips.
+
+Layout:
+
+Cannon 25 pin
+
+SDA - connect to pin 14 (Auto Linefeed)
+SCL - connect to pin 16 (Initialize Printer)
+GND - connect to pin 18-25
++5V - use external supply (I use 5V from 3.5" floppy connector)
+      
+no pullups  requied
+
+Module parameters:
+
+base = 0xXXX
+XXX - 278 or 378
+
+That's all.
+
+Daniel Smolik
+marvin@sitour.cz
diff -urN linux-2.4.24.org/Documentation/i2c/i2c-protocol linux-2.4.24/Documentation/i2c/i2c-protocol
--- linux-2.4.24.org/Documentation/i2c/i2c-protocol     2004-02-04 22:35:46.532254730 +0100
+++ linux-2.4.24/Documentation/i2c/i2c-protocol 2004-02-04 22:36:36.621838010 +0100
@@ -65,3 +65,12 @@
     need to emit an Rd instead of a Wr, or vice versa, you set this
     flag. For example:
       S Addr Rd [A] Data [A] Data [A] ... [A] Data [A] P
+
+  Flags I2C_M_IGNORE_NAK
+    Normally message is interrupted immediately if there is [NA] from the
+    client. Setting this flag treats any [NA] as [A], and all of
+    message is sent.
+    These messages may still fail to SCL lo->hi timeout.
+
+  Flags I2C_M_NO_RD_ACK
+    In a read message, master A/NA bit is skipped.
diff -urN linux-2.4.24.org/Documentation/i2c/summary linux-2.4.24/Documentation/i2c/summary
--- linux-2.4.24.org/Documentation/i2c/summary  2004-02-04 22:35:46.582244335 +0100
+++ linux-2.4.24/Documentation/i2c/summary      2004-02-04 22:36:36.624837386 +0100
@@ -59,16 +59,16 @@
 i2c-algo-8xx:    An algorithm for CPM's I2C device in Motorola 8xx processors (NOT BUILT BY DEFAULT)
 i2c-algo-bit:    A bit-banging algorithm
 i2c-algo-pcf:    A PCF 8584 style algorithm
-i2c-algo-ppc405: An algorithm for the I2C device in IBM 405xx processors (NOT BUILT BY DEFAULT)
+i2c-algo-ibm_ocp: An algorithm for the I2C device in IBM 4xx processors (NOT BUILT BY DEFAULT)
 
 Adapter drivers
 ---------------
 
 i2c-elektor:     Elektor ISA card (uses i2c-algo-pcf)
 i2c-elv:         ELV parallel port adapter (uses i2c-algo-bit)
-i2c-pcf-epp:     PCF8584 on a EPP parallel port (uses i2c-algo-pcf) (BROKEN - missing i2c-pcf-epp.h)
+i2c-pcf-epp:     PCF8584 on a EPP parallel port (uses i2c-algo-pcf) (NOT mkpatched)
 i2c-philips-par: Philips style parallel port adapter (uses i2c-algo-bit)
-i2c-ppc405:      IBM 405xx processor I2C device (uses i2c-algo-ppc405) (NOT BUILT BY DEFAULT)
+i2c-adap-ibm_ocp: IBM 4xx processor I2C device (uses i2c-algo-ibm_ocp) (NOT BUILT BY DEFAULT)
 i2c-pport:       Primitive parallel port adapter (uses i2c-algo-bit)
 i2c-rpx:         RPX board Motorola 8xx I2C device (uses i2c-algo-8xx) (NOT BUILT BY DEFAULT)
 i2c-velleman:    Velleman K8000 parallel port adapter (uses i2c-algo-bit)
diff -urN linux-2.4.24.org/Documentation/i2c/writing-clients linux-2.4.24/Documentation/i2c/writing-clients
--- linux-2.4.24.org/Documentation/i2c/writing-clients  2004-02-04 22:35:46.605239553 +0100
+++ linux-2.4.24/Documentation/i2c/writing-clients      2004-02-04 22:36:36.629836346 +0100
@@ -24,16 +24,14 @@
 routines, a client structure specific information like the actual I2C
 address.
 
-  struct i2c_driver foo_driver
-  {  
-    /* name           */  "Foo version 2.3 and later driver",
-    /* id             */  I2C_DRIVERID_FOO,
-    /* flags          */  I2C_DF_NOTIFY,
-    /* attach_adapter */  &foo_attach_adapter,
-    /* detach_client  */  &foo_detach_client,
-    /* command        */  &foo_command,   /* May be NULL */
-    /* inc_use        */  &foo_inc_use,   /* May be NULL */
-    /* dec_use        */  &foo_dec_use    /* May be NULL */
+  static struct i2c_driver foo_driver = {
+    .owner          = THIS_MODULE,
+    .name           = "Foo version 2.3 driver",
+    .id             = I2C_DRIVERID_FOO, /* usually from i2c-id.h */
+    .flags          = I2C_DF_NOTIFY,
+    .attach_adapter = &foo_attach_adapter,
+    .detach_client  = &foo_detach_client,
+    .command        = &foo_command /* may be NULL */
   }
  
 The name can be chosen freely, and may be upto 40 characters long. Please
@@ -50,43 +48,8 @@
 All other fields are for call-back functions which will be explained 
 below.
 
-
-Module usage count
-==================
-
-If your driver can also be compiled as a module, there are moments at 
-which the module can not be removed from memory. For example, when you
-are doing a lengthy transaction, or when you create a /proc directory,
-and some process has entered that directory (this last case is the
-main reason why these call-backs were introduced).
-
-To increase or decrease the module usage count, you can use the
-MOD_{INC,DEC}_USE_COUNT macros. They must be called from the module
-which needs to get its usage count changed; that is why each driver
-module has to implement its own callback.
-
-  void foo_inc_use (struct i2c_client *client)
-  {
-  #ifdef MODULE
-    MOD_INC_USE_COUNT;
-  #endif
-  }
-
-  void foo_dec_use (struct i2c_client *client)
-  {
-  #ifdef MODULE
-    MOD_DEC_USE_COUNT;
-  #endif
-  }
-
-Do not call these call-back functions directly; instead, use one of the
-following functions defined in i2c.h:
-  void i2c_inc_use_client(struct i2c_client *);
-  void i2c_dec_use_client(struct i2c_client *);
-
-You should *not* increase the module count just because a device is
-detected and a client created. This would make it impossible to remove
-an adapter driver! 
+There use to be two additional fields in this structure, inc_use et dec_use,
+for module usage count, but these fields were obsoleted and removed.
 
 
 Extra client data
diff -urN linux-2.4.24.org/drivers/i2c/i2c-adap-ibm_ocp.c linux-2.4.24/drivers/i2c/i2c-adap-ibm_ocp.c
--- linux-2.4.24.org/drivers/i2c/i2c-adap-ibm_ocp.c     1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.24/drivers/i2c/i2c-adap-ibm_ocp.c 2004-02-04 22:36:36.635835098 +0100
@@ -0,0 +1,346 @@
+/*
+   -------------------------------------------------------------------------
+   i2c-adap-ibm_ocp.c i2c-hw access for the IIC peripheral on the IBM PPC 405
+   -------------------------------------------------------------------------
+  
+   Ian DaSilva, MontaVista Software, Inc.
+   idasilva@mvista.com or source@mvista.com
+
+   Copyright 2000 MontaVista Software Inc.
+
+   Changes made to support the IIC peripheral on the IBM PPC 405 
+
+
+   ----------------------------------------------------------------------------
+   This file was highly leveraged from i2c-elektor.c, which was created
+   by Simon G. Vogl and Hans Berglund:
+
+ 
+     Copyright (C) 1995-97 Simon G. Vogl
+                   1998-99 Hans Berglund
+
+   With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
+   Frodo Looijaard <frodol@dds.nl>
+
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+   ----------------------------------------------------------------------------
+
+   History: 01/20/12 - Armin
+       akuster@mvista.com
+       ported up to 2.4.16+    
+
+   Version 02/03/25 - Armin
+       converted to ocp format
+       removed commented out or #if 0 code
+
+   TODO: convert to ocp_register
+         add PM hooks
+
+*/
+
+
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-ibm_ocp.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/ocp.h>
+
+/*
+ * This next section is configurable, and it is used to set the number
+ * of i2c controllers in the system.  The default number of instances is 1,
+ * however, this should be changed to reflect your system's configuration.
+ */ 
+
+/*
+ * The STB03xxx, with a PPC405 core, has two i2c controllers.
+ */
+//(sizeof(IIC_ADDR)/sizeof(struct iic_regs))
+extern iic_t *IIC_ADDR[];
+static struct iic_ibm iic_ibmocp_adaps[IIC_NUMS][5];
+
+static struct i2c_algo_iic_data *iic_ibmocp_data[IIC_NUMS];
+static struct i2c_adapter *iic_ibmocp_ops[IIC_NUMS];
+
+static int i2c_debug=0;
+static wait_queue_head_t iic_wait[IIC_NUMS];
+static int iic_pending;
+static spinlock_t irq_driver_lock = SPIN_LOCK_UNLOCKED;
+
+
+/* ----- global defines -----------------------------------------------        */
+#define DEB(x) if (i2c_debug>=1) x
+#define DEB2(x) if (i2c_debug>=2) x
+#define DEB3(x) if (i2c_debug>=3) x
+#define DEBE(x)        x       /* error messages                               */
+
+/* ----- local functions ----------------------------------------------        */
+
+//
+// Description: Write a byte to IIC hardware
+//
+static void iic_ibmocp_setbyte(void *data, int ctl, int val)
+{
+   // writeb resolves to a write to the specified memory location
+   // plus a call to eieio.  eieio ensures that all instructions
+   // preceding it are completed before any further stores are
+   // completed.
+   // Delays at this level (to protect writes) are not needed here.
+   writeb(val, ctl);
+}
+
+
+//
+// Description: Read a byte from IIC hardware
+//
+static int iic_ibmocp_getbyte(void *data, int ctl)
+{
+   int val;
+
+   val = readb(ctl);
+   return (val);
+}
+
+
+//
+// Description: Return our slave address.  This is the address
+// put on the I2C bus when another master on the bus wants to address us
+// as a slave
+//
+static int iic_ibmocp_getown(void *data)
+{
+   return(((struct iic_ibm *)(data))->iic_own);
+}
+
+
+//
+// Description: Return the clock rate
+//
+static int iic_ibmocp_getclock(void *data)
+{
+   return(((struct iic_ibm *)(data))->iic_clock);
+}
+
+
+
+//
+// Description:  Put this process to sleep.  We will wake up when the
+// IIC controller interrupts.
+//
+static void iic_ibmocp_waitforpin(void *data) {
+
+   int timeout = 2;
+   struct iic_ibm *priv_data = data;
+
+   //
+   // If interrupts are enabled (which they are), then put the process to
+   // sleep.  This process will be awakened by two events -- either the
+   // the IIC peripheral interrupts or the timeout expires. 
+   //
+   if (priv_data->iic_irq > 0) {
+      spin_lock_irq(&irq_driver_lock);
+      if (iic_pending == 0) {
+        interruptible_sleep_on_timeout(&(iic_wait[priv_data->index]), timeout*HZ );
+      } else
+        iic_pending = 0;
+      spin_unlock_irq(&irq_driver_lock);
+   } else {
+      //
+      // If interrupts are not enabled then delay for a reasonable amount
+      // of time and return.  We expect that by time we return to the calling
+      // function that the IIC has finished our requested transaction and
+      // the status bit reflects this.
+      //
+      // udelay is probably not the best choice for this since it is
+      // the equivalent of a busy wait
+      //
+      udelay(100);
+   }
+   //printk("iic_ibmocp_waitforpin: exitting\n");
+}
+
+
+//
+// Description: The registered interrupt handler
+//
+static void iic_ibmocp_handler(int this_irq, void *dev_id, struct pt_regs *regs) 
+{
+   int ret;
+   struct iic_regs *iic;
+   struct iic_ibm *priv_data = dev_id;
+   iic = (struct iic_regs *) priv_data->iic_base;
+   iic_pending = 1;
+   DEB2(printk("iic_ibmocp_handler: in interrupt handler\n"));
+   // Read status register
+   ret = readb((int) &(iic->sts));
+   DEB2(printk("iic_ibmocp_handler: status = %x\n", ret));
+   // Clear status register.  See IBM PPC 405 reference manual for details
+   writeb(0x0a, (int) &(iic->sts));
+   wake_up_interruptible(&(iic_wait[priv_data->index]));
+}
+
+
+//
+// Description: This function is very hardware dependent.  First, we lock
+// the region of memory where out registers exist.  Next, we request our
+// interrupt line and register its associated handler.  Our IIC peripheral
+// uses interrupt number 2, as specified by the 405 reference manual.
+//
+static int iic_hw_resrc_init(int instance)
+{
+
+   DEB(printk("iic_hw_resrc_init: Physical Base address: 0x%x\n", (u32) IIC_ADDR[instance] ));
+   iic_ibmocp_adaps[instance]->iic_base = (u32)ioremap((unsigned long)IIC_ADDR[instance],PAGE_SIZE);
+
+   DEB(printk("iic_hw_resrc_init: ioremapped base address: 0x%x\n", iic_ibmocp_adaps[instance]->iic_base));
+
+   if (iic_ibmocp_adaps[instance]->iic_irq > 0) {
+       
+      if (request_irq(iic_ibmocp_adaps[instance]->iic_irq, iic_ibmocp_handler,
+       0, "IBM OCP IIC", iic_ibmocp_adaps[instance]) < 0) {
+         printk(KERN_ERR "iic_hw_resrc_init: Request irq%d failed\n",
+          iic_ibmocp_adaps[instance]->iic_irq);
+        iic_ibmocp_adaps[instance]->iic_irq = 0;
+      } else {
+         DEB3(printk("iic_hw_resrc_init: Enabled interrupt\n"));
+      }
+   }
+   return 0;
+}
+
+
+//
+// Description: Release irq and memory
+//
+static void iic_ibmocp_release(void)
+{
+   int i;
+
+   for(i=0; i<IIC_NUMS; i++) {
+      struct iic_ibm *priv_data = (struct iic_ibm *)iic_ibmocp_data[i]->data;
+      if (priv_data->iic_irq > 0) {
+         disable_irq(priv_data->iic_irq);
+         free_irq(priv_data->iic_irq, 0);
+      }
+      kfree(iic_ibmocp_data[i]);
+      kfree(iic_ibmocp_ops[i]);
+   }
+}
+
+
+//
+// Description: Called when the module is loaded.  This function starts the
+// cascade of calls up through the heirarchy of i2c modules (i.e. up to the
+//  algorithm layer and into to the core layer)
+//
+static int __init iic_ibmocp_init(void) 
+{
+   int i;
+
+   printk(KERN_INFO "iic_ibmocp_init: IBM on-chip iic adapter module\n");
+ 
+   for(i=0; i<IIC_NUMS; i++) {
+      iic_ibmocp_data[i] = kmalloc(sizeof(struct i2c_algo_iic_data),GFP_KERNEL);
+      if(iic_ibmocp_data[i] == NULL) {
+         return -ENOMEM;
+      }
+      memset(iic_ibmocp_data[i], 0, sizeof(struct i2c_algo_iic_data));
+      
+      switch (i) {
+             case 0:
+              iic_ibmocp_adaps[i]->iic_irq = IIC_IRQ(0);
+             break;
+             case 1:
+              iic_ibmocp_adaps[i]->iic_irq = IIC_IRQ(1);
+             break;
+      }
+      iic_ibmocp_adaps[i]->iic_clock = IIC_CLOCK;
+      iic_ibmocp_adaps[i]->iic_own = IIC_OWN; 
+      iic_ibmocp_adaps[i]->index = i;
+ 
+      DEB(printk("irq %x\n", iic_ibmocp_adaps[i]->iic_irq));
+      DEB(printk("clock %x\n", iic_ibmocp_adaps[i]->iic_clock));
+      DEB(printk("own %x\n", iic_ibmocp_adaps[i]->iic_own));
+      DEB(printk("index %x\n", iic_ibmocp_adaps[i]->index));
+
+
+      iic_ibmocp_data[i]->data = (struct iic_regs *)iic_ibmocp_adaps[i]; 
+      iic_ibmocp_data[i]->setiic = iic_ibmocp_setbyte;
+      iic_ibmocp_data[i]->getiic = iic_ibmocp_getbyte;
+      iic_ibmocp_data[i]->getown = iic_ibmocp_getown;
+      iic_ibmocp_data[i]->getclock = iic_ibmocp_getclock;
+      iic_ibmocp_data[i]->waitforpin = iic_ibmocp_waitforpin;
+      iic_ibmocp_data[i]->udelay = 80;
+      iic_ibmocp_data[i]->mdelay = 80;
+      iic_ibmocp_data[i]->timeout = HZ;
+      
+            iic_ibmocp_ops[i] = kmalloc(sizeof(struct i2c_adapter), GFP_KERNEL);
+      if(iic_ibmocp_ops[i] == NULL) {
+         return -ENOMEM;
+      }
+      memset(iic_ibmocp_ops[i], 0, sizeof(struct i2c_adapter));
+      strcpy(iic_ibmocp_ops[i]->name, "IBM OCP IIC adapter");
+      iic_ibmocp_ops[i]->owner = THIS_MODULE;
+      iic_ibmocp_ops[i]->id = I2C_HW_OCP;
+      iic_ibmocp_ops[i]->algo = NULL;
+      iic_ibmocp_ops[i]->algo_data = iic_ibmocp_data[i];
+       
+      
+      init_waitqueue_head(&(iic_wait[i]));
+      if (iic_hw_resrc_init(i) == 0) {
+         if (i2c_ocp_add_bus(iic_ibmocp_ops[i]) < 0)
+         return -ENODEV;
+      } else {
+         return -ENODEV;
+      }
+      DEB(printk(KERN_INFO "iic_ibmocp_init: found device at %#x.\n\n", iic_ibmocp_adaps[i]->iic_base));
+   }
+   return 0;
+}
+
+
+static void __exit iic_ibmocp_exit(void)
+{
+   int i;
+
+   for(i=0; i<IIC_NUMS; i++) {
+      i2c_ocp_del_bus(iic_ibmocp_ops[i]);
+   }
+   iic_ibmocp_release();
+}
+
+//
+// If modules is NOT defined when this file is compiled, then the MODULE_*
+// macros will resolve to nothing
+//
+MODULE_AUTHOR("MontaVista Software <www.mvista.com>");
+MODULE_DESCRIPTION("I2C-Bus adapter routines for PPC 405 IIC bus adapter");
+MODULE_LICENSE("GPL");
+
+MODULE_PARM(base, "i");
+MODULE_PARM(irq, "i");
+MODULE_PARM(clock, "i");
+MODULE_PARM(own, "i");
+MODULE_PARM(i2c_debug,"i");
+
+
+module_init(iic_ibmocp_init);
+module_exit(iic_ibmocp_exit); 
diff -urN linux-2.4.24.org/drivers/i2c/i2c-algo-8xx.c linux-2.4.24/drivers/i2c/i2c-algo-8xx.c
--- linux-2.4.24.org/drivers/i2c/i2c-algo-8xx.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.24/drivers/i2c/i2c-algo-8xx.c     2004-02-04 22:36:36.640834059 +0100
@@ -0,0 +1,616 @@
+/*
+ * i2c-algo-8xx.c i2x driver algorithms for MPC8XX CPM
+ * Copyright (c) 1999 Dan Malek (dmalek@jlc.net).
+ *
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * moved into proper i2c interface; separated out platform specific 
+ * parts into i2c-rpx.c
+ * Brad Parker (brad@heeltoe.com)
+ */
+
+// XXX todo
+// timeout sleep?
+
+/* $Id$ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-8xx.h>
+#include <asm/mpc8xx.h>
+#include <asm/commproc.h>
+
+
+#define CPM_MAX_READ   513
+/* #define I2C_CHIP_ERRATA */ /* Try uncomment this if you have an older CPU(earlier than rev D4) */
+static wait_queue_head_t iic_wait;
+static ushort r_tbase, r_rbase;
+
+int cpm_debug = 0;
+
+static  void
+cpm_iic_interrupt(void *dev_id, struct pt_regs *regs)
+{
+       volatile i2c8xx_t *i2c = (i2c8xx_t *)dev_id;
+       if (cpm_debug > 1)
+               printk("cpm_iic_interrupt(dev_id=%p)\n", dev_id);
+#if 0
+       /* Chip errata, clear enable. This is not needed on rev D4 CPUs */
+        /* This should probably be removed and replaced by I2C_CHIP_ERRATA stuff */
+        /* Someone with a buggy CPU needs to confirm that */
+       i2c->i2c_i2mod &= ~1;
+#endif
+       /* Clear interrupt.
+       */
+       i2c->i2c_i2cer = 0xff;
+
+       /* Get 'me going again.
+       */
+       wake_up_interruptible(&iic_wait);
+}
+
+static void
+cpm_iic_init(struct i2c_algo_8xx_data *cpm)
+{
+       volatile iic_t          *iip = cpm->iip;
+       volatile i2c8xx_t       *i2c = cpm->i2c;
+       unsigned char brg;
+       bd_t *bd = (bd_t *)__res;
+
+       if (cpm_debug) printk(KERN_DEBUG "cpm_iic_init()\n");
+
+       /* Initialize the parameter ram.
+        * We need to make sure many things are initialized to zero,
+        * especially in the case of a microcode patch.
+        */
+       iip->iic_rstate = 0;
+       iip->iic_rdp = 0;
+       iip->iic_rbptr = 0;
+       iip->iic_rbc = 0;
+       iip->iic_rxtmp = 0;
+       iip->iic_tstate = 0;
+       iip->iic_tdp = 0;
+       iip->iic_tbptr = 0;
+       iip->iic_tbc = 0;
+       iip->iic_txtmp = 0;
+
+       /* Set up the IIC parameters in the parameter ram.
+       */
+       iip->iic_tbase = r_tbase = cpm->dp_addr;
+       iip->iic_rbase = r_rbase = cpm->dp_addr + sizeof(cbd_t)*2;
+
+       iip->iic_tfcr = SMC_EB;
+       iip->iic_rfcr = SMC_EB;
+
+       /* Set maximum receive size.
+       */
+       iip->iic_mrblr = CPM_MAX_READ;
+
+       /* Initialize Tx/Rx parameters.
+       */
+       if (cpm->reloc == 0) {
+               volatile cpm8xx_t *cp = cpm->cp;
+
+               cp->cp_cpcr =
+                       mk_cr_cmd(CPM_CR_CH_I2C, CPM_CR_INIT_TRX) | CPM_CR_FLG;
+               while (cp->cp_cpcr & CPM_CR_FLG);
+       } else {
+               iip->iic_rbptr = iip->iic_rbase;
+               iip->iic_tbptr = iip->iic_tbase;
+               iip->iic_rstate = 0;
+               iip->iic_tstate = 0;
+       }
+
+       /* Select an arbitrary address.  Just make sure it is unique.
+       */
+       i2c->i2c_i2add = 0xfe;
+
+       /* Make clock run at 60 KHz.
+       */
+       brg = (unsigned char) (bd->bi_intfreq/(32*2*60000) -3);
+       i2c->i2c_i2brg = brg;
+
+       i2c->i2c_i2mod = 0x00; 
+       i2c->i2c_i2com = 0x01; /* Master mode */
+
+       /* Disable interrupts.
+       */
+       i2c->i2c_i2cmr = 0;
+       i2c->i2c_i2cer = 0xff;
+
+       init_waitqueue_head(&iic_wait);
+
+       /* Install interrupt handler.
+       */
+       if (cpm_debug) {
+               printk ("%s[%d] Install ISR for IRQ %d\n",
+                       __func__,__LINE__, CPMVEC_I2C);
+       }
+       (*cpm->setisr)(CPMVEC_I2C, cpm_iic_interrupt, (void *)i2c);
+}
+
+
+static int
+cpm_iic_shutdown(struct i2c_algo_8xx_data *cpm)
+{
+       volatile i2c8xx_t *i2c = cpm->i2c;
+
+       /* Shut down IIC.
+       */
+       i2c->i2c_i2mod &= ~1;
+       i2c->i2c_i2cmr = 0;
+       i2c->i2c_i2cer = 0xff;
+
+       return(0);
+}
+
+static void 
+cpm_reset_iic_params(volatile iic_t *iip)
+{
+       iip->iic_tbase = r_tbase;
+       iip->iic_rbase = r_rbase;
+
+       iip->iic_tfcr = SMC_EB;
+       iip->iic_rfcr = SMC_EB;
+
+       iip->iic_mrblr = CPM_MAX_READ;
+
+       iip->iic_rstate = 0;
+       iip->iic_rdp = 0;
+       iip->iic_rbptr = iip->iic_rbase;
+       iip->iic_rbc = 0;
+       iip->iic_rxtmp = 0;
+       iip->iic_tstate = 0;
+       iip->iic_tdp = 0;
+       iip->iic_tbptr = iip->iic_tbase;
+       iip->iic_tbc = 0;
+       iip->iic_txtmp = 0;
+}
+
+#define BD_SC_NAK              ((ushort)0x0004) /* NAK - did not respond */
+#define BD_SC_OV               ((ushort)0x0002) /* OV - receive overrun */
+#define CPM_CR_CLOSE_RXBD      ((ushort)0x0007)
+
+static void force_close(struct i2c_algo_8xx_data *cpm)
+{
+       volatile i2c8xx_t *i2c = cpm->i2c;
+       if (cpm->reloc == 0) { /* micro code disabled */
+               volatile cpm8xx_t *cp = cpm->cp;
+
+               if (cpm_debug) printk("force_close()\n");
+               cp->cp_cpcr =
+                       mk_cr_cmd(CPM_CR_CH_I2C, CPM_CR_CLOSE_RXBD) |
+                       CPM_CR_FLG;
+
+               while (cp->cp_cpcr & CPM_CR_FLG);
+       }
+       i2c->i2c_i2cmr = 0x00;  /* Disable all interrupts */
+       i2c->i2c_i2cer = 0xff; 
+}
+
+
+/* Read from IIC...
+ * abyte = address byte, with r/w flag already set
+ */
+static int
+cpm_iic_read(struct i2c_algo_8xx_data *cpm, u_char abyte, char *buf, int count)
+{
+       volatile iic_t *iip = cpm->iip;
+       volatile i2c8xx_t *i2c = cpm->i2c;
+       volatile cpm8xx_t *cp = cpm->cp;
+       volatile cbd_t  *tbdf, *rbdf;
+       u_char *tb;
+       unsigned long flags, tmo;
+
+       if (count >= CPM_MAX_READ)
+               return -EINVAL;
+
+       /* check for and use a microcode relocation patch */
+       if (cpm->reloc) {
+               cpm_reset_iic_params(iip);
+       }
+
+       tbdf = (cbd_t *)&cp->cp_dpmem[iip->iic_tbase];
+       rbdf = (cbd_t *)&cp->cp_dpmem[iip->iic_rbase];
+
+       /* To read, we need an empty buffer of the proper length.
+        * All that is used is the first byte for address, the remainder
+        * is just used for timing (and doesn't really have to exist).
+        */
+       tb = cpm->temp;
+       tb = (u_char *)(((uint)tb + 15) & ~15);
+       tb[0] = abyte;          /* Device address byte w/rw flag */
+
+       flush_dcache_range((unsigned long) tb, (unsigned long) (tb+1));
+
+       if (cpm_debug) printk("cpm_iic_read(abyte=0x%x)\n", abyte);
+
+       tbdf->cbd_bufaddr = __pa(tb);
+       tbdf->cbd_datlen = count + 1;
+       tbdf->cbd_sc =
+               BD_SC_READY | BD_SC_LAST |
+               BD_SC_WRAP | BD_IIC_START;
+
+       iip->iic_mrblr = count +1; /* prevent excessive read, +1
+                                     is needed otherwise will the
+                                     RXB interrupt come too early */
+
+       /* flush will invalidate too. */
+       flush_dcache_range((unsigned long) buf, (unsigned long) (buf+count));
+
+       rbdf->cbd_datlen = 0;
+       rbdf->cbd_bufaddr = __pa(buf);
+       rbdf->cbd_sc = BD_SC_EMPTY | BD_SC_WRAP| BD_SC_INTRPT;
+       if(count > 16){
+               /* Chip bug, set enable here */
+               local_irq_save(flags);
+               i2c->i2c_i2cmr = 0x13;  /* Enable some interupts */
+               i2c->i2c_i2cer = 0xff;
+               i2c->i2c_i2mod |= 1;    /* Enable */
+               i2c->i2c_i2com |= 0x80; /* Begin transmission */
+
+               /* Wait for IIC transfer */
+               tmo = interruptible_sleep_on_timeout(&iic_wait,1*HZ);
+               local_irq_restore(flags);
+       } else { /* busy wait for small transfers, its faster */
+               i2c->i2c_i2cmr = 0x00;  /* Disable I2C interupts */
+               i2c->i2c_i2cer = 0xff;
+               i2c->i2c_i2mod |= 1;    /* Enable */
+               i2c->i2c_i2com |= 0x80; /* Begin transmission */
+               tmo = jiffies + 1*HZ; 
+               while(!(i2c->i2c_i2cer & 0x11 || time_after(jiffies, tmo))); /* Busy wait, with a timeout */
+       }               
+
+       if (signal_pending(current) || !tmo){
+               force_close(cpm);
+               if(cpm_debug) 
+                       printk("IIC read: timeout!\n");
+               return -EIO;
+       }
+#ifdef I2C_CHIP_ERRATA
+       /* Chip errata, clear enable. This is not needed on rev D4 CPUs.
+        Disabling I2C too early may cause too short stop condition */
+       udelay(4);
+       i2c->i2c_i2mod &= ~1;
+#endif
+       if (cpm_debug) {
+               printk("tx sc %04x, rx sc %04x\n",
+                      tbdf->cbd_sc, rbdf->cbd_sc);
+       }
+
+       if (tbdf->cbd_sc & BD_SC_READY) {
+               printk("IIC read; complete but tbuf ready\n");
+               force_close(cpm);
+               printk("tx sc %04x, rx sc %04x\n",
+                      tbdf->cbd_sc, rbdf->cbd_sc);
+       }
+
+       if (tbdf->cbd_sc & BD_SC_NAK) {
+               if (cpm_debug)
+                       printk("IIC read; no ack\n");
+               return -EREMOTEIO;
+       }
+
+       if (rbdf->cbd_sc & BD_SC_EMPTY) {
+               /* force_close(cpm); */
+               if (cpm_debug){
+                       printk("IIC read; complete but rbuf empty\n");
+                       printk("tx sc %04x, rx sc %04x\n",
+                              tbdf->cbd_sc, rbdf->cbd_sc);
+               }
+               return -EREMOTEIO;
+       }
+
+       if (rbdf->cbd_sc & BD_SC_OV) {
+               if (cpm_debug)
+                       printk("IIC read; Overrun\n");
+               return -EREMOTEIO;;
+       }
+
+       if (cpm_debug) printk("read %d bytes\n", rbdf->cbd_datlen);
+
+       if (rbdf->cbd_datlen < count) {
+               if (cpm_debug)
+                       printk("IIC read; short, wanted %d got %d\n",
+                              count, rbdf->cbd_datlen);
+               return 0;
+       }
+
+       return count;
+}
+
+/* Write to IIC...
+ * addr = address byte, with r/w flag already set
+ */
+static int
+cpm_iic_write(struct i2c_algo_8xx_data *cpm, u_char abyte, char *buf,int count)
+{
+       volatile iic_t *iip = cpm->iip;
+       volatile i2c8xx_t *i2c = cpm->i2c;
+       volatile cpm8xx_t *cp = cpm->cp;
+       volatile cbd_t  *tbdf;
+       u_char *tb;
+       unsigned long flags, tmo;
+
+       /* check for and use a microcode relocation patch */
+       if (cpm->reloc) {
+               cpm_reset_iic_params(iip);
+       }
+       tb = cpm->temp;
+       tb = (u_char *)(((uint)tb + 15) & ~15);
+       *tb = abyte;            /* Device address byte w/rw flag */
+
+       flush_dcache_range((unsigned long) tb, (unsigned long) (tb+1));
+       flush_dcache_range((unsigned long) buf, (unsigned long) (buf+count));
+
+       if (cpm_debug) printk("cpm_iic_write(abyte=0x%x)\n", abyte);
+
+       /* set up 2 descriptors */
+       tbdf = (cbd_t *)&cp->cp_dpmem[iip->iic_tbase];
+
+       tbdf[0].cbd_bufaddr = __pa(tb);
+       tbdf[0].cbd_datlen = 1;
+       tbdf[0].cbd_sc = BD_SC_READY | BD_IIC_START;
+
+       tbdf[1].cbd_bufaddr = __pa(buf);
+       tbdf[1].cbd_datlen = count;
+       tbdf[1].cbd_sc = BD_SC_READY | BD_SC_INTRPT | BD_SC_LAST | BD_SC_WRAP;
+
+       if(count > 16){
+               /* Chip bug, set enable here */
+               local_irq_save(flags);
+               i2c->i2c_i2cmr = 0x13;  /* Enable some interupts */
+               i2c->i2c_i2cer = 0xff;
+               i2c->i2c_i2mod |= 1;    /* Enable */
+               i2c->i2c_i2com |= 0x80; /* Begin transmission */
+               
+               /* Wait for IIC transfer */
+               tmo = interruptible_sleep_on_timeout(&iic_wait,1*HZ);
+               local_irq_restore(flags);
+       } else {  /* busy wait for small transfers, its faster */
+               i2c->i2c_i2cmr = 0x00;  /* Disable I2C interupts */
+               i2c->i2c_i2cer = 0xff;
+               i2c->i2c_i2mod |= 1;    /* Enable */
+               i2c->i2c_i2com |= 0x80; /* Begin transmission */
+               tmo = jiffies + 1*HZ; 
+               while(!(i2c->i2c_i2cer & 0x12 || time_after(jiffies, tmo))); /* Busy wait, with a timeout */
+       }               
+
+       if (signal_pending(current) || !tmo){
+               force_close(cpm);
+               if(cpm_debug && !tmo) 
+                       printk("IIC write: timeout!\n");
+               return -EIO;
+       }
+       
+#if I2C_CHIP_ERRATA
+       /* Chip errata, clear enable. This is not needed on rev D4 CPUs.
+        Disabling I2C too early may cause too short stop condition */
+       udelay(4);
+       i2c->i2c_i2mod &= ~1;
+#endif
+       if (cpm_debug) {
+               printk("tx0 sc %04x, tx1 sc %04x\n",
+                      tbdf[0].cbd_sc, tbdf[1].cbd_sc);
+       }
+
+       if (tbdf->cbd_sc & BD_SC_NAK) {
+               if (cpm_debug) 
+                       printk("IIC write; no ack\n");
+               return 0;
+       }
+         
+       if (tbdf->cbd_sc & BD_SC_READY) {
+               if (cpm_debug)
+                       printk("IIC write; complete but tbuf ready\n");
+               return 0;
+       }
+
+       return count;
+}
+
+/* See if an IIC address exists..
+ * addr = 7 bit address, unshifted
+ */
+static int
+cpm_iic_tryaddress(struct i2c_algo_8xx_data *cpm, int addr)
+{
+       volatile iic_t *iip = cpm->iip;
+       volatile i2c8xx_t *i2c = cpm->i2c;
+       volatile cpm8xx_t *cp = cpm->cp;
+       volatile cbd_t *tbdf, *rbdf;
+       u_char *tb;
+       unsigned long flags, len, tmo;
+
+       if (cpm_debug > 1)
+               printk("cpm_iic_tryaddress(cpm=%p,addr=%d)\n", cpm, addr);
+
+       /* check for and use a microcode relocation patch */
+       if (cpm->reloc) {
+               cpm_reset_iic_params(iip);
+       }
+
+       if (cpm_debug && addr == 0) {
+               printk("iip %p, dp_addr 0x%x\n", cpm->iip, cpm->dp_addr);
+               printk("iic_tbase %d, r_tbase %d\n", iip->iic_tbase, r_tbase);
+       }
+
+       tbdf = (cbd_t *)&cp->cp_dpmem[iip->iic_tbase];
+       rbdf = (cbd_t *)&cp->cp_dpmem[iip->iic_rbase];
+
+       tb = cpm->temp;
+       tb = (u_char *)(((uint)tb + 15) & ~15);
+
+       /* do a simple read */
+       tb[0] = (addr << 1) | 1;        /* device address (+ read) */
+       len = 2;
+
+       flush_dcache_range((unsigned long) tb, (unsigned long) (tb+2));
+
+       tbdf->cbd_bufaddr = __pa(tb);
+       tbdf->cbd_datlen = len;
+       tbdf->cbd_sc =
+               BD_SC_READY | BD_SC_LAST |
+               BD_SC_WRAP | BD_IIC_START;
+
+       rbdf->cbd_datlen = 0;
+       rbdf->cbd_bufaddr = __pa(tb+2);
+       rbdf->cbd_sc = BD_SC_EMPTY | BD_SC_WRAP | BD_SC_INTRPT;
+
+       local_irq_save(flags);
+       i2c->i2c_i2cmr = 0x13;  /* Enable some interupts */
+       i2c->i2c_i2cer = 0xff;
+       i2c->i2c_i2mod |= 1;    /* Enable */
+       i2c->i2c_i2com |= 0x80; /* Begin transmission */
+
+       if (cpm_debug > 1) printk("about to sleep\n");
+
+       /* wait for IIC transfer */
+       tmo = interruptible_sleep_on_timeout(&iic_wait,1*HZ);
+       local_irq_restore(flags);
+
+#ifdef I2C_CHIP_ERRATA
+       /* Chip errata, clear enable. This is not needed on rev D4 CPUs.
+        Disabling I2C too early may cause too short stop condition */
+       udelay(4);
+       i2c->i2c_i2mod &= ~1;
+#endif
+
+       if (signal_pending(current) || !tmo){
+               force_close(cpm);
+               if(cpm_debug && !tmo) 
+                       printk("IIC tryaddress: timeout!\n");
+               return -EIO;
+       }
+
+       if (cpm_debug > 1) printk("back from sleep\n");
+
+       if (tbdf->cbd_sc & BD_SC_NAK) {
+               if (cpm_debug > 1) printk("IIC try; no ack\n");
+               return 0;
+       }
+         
+       if (tbdf->cbd_sc & BD_SC_READY) {
+               printk("IIC try; complete but tbuf ready\n");
+       }
+       
+       return 1;
+}
+
+static int cpm_xfer(struct i2c_adapter *adap,
+                   struct i2c_msg msgs[], 
+                   int num)
+{
+       struct i2c_algo_8xx_data *cpm = adap->algo_data;
+       struct i2c_msg *pmsg;
+       int i, ret;
+       u_char addr;
+    
+       for (i = 0; i < num; i++) {
+               pmsg = &msgs[i];
+
+               if (cpm_debug)
+                       printk("i2c-algo-8xx.o: "
+                              "#%d addr=0x%x flags=0x%x len=%d\n buf=%lx\n",
+                              i, pmsg->addr, pmsg->flags, pmsg->len, (unsigned long)pmsg->buf);
+
+               addr = pmsg->addr << 1;
+               if (pmsg->flags & I2C_M_RD )
+                       addr |= 1;
+               if (pmsg->flags & I2C_M_REV_DIR_ADDR )
+                       addr ^= 1;
+    
+               if (!(pmsg->flags & I2C_M_NOSTART)) {
+               }
+               if (pmsg->flags & I2C_M_RD ) {
+                       /* read bytes into buffer*/
+                       ret = cpm_iic_read(cpm, addr, pmsg->buf, pmsg->len);
+                       if (cpm_debug)
+                               printk("i2c-algo-8xx.o: read %d bytes\n", ret);
+                       if (ret < pmsg->len ) {
+                               return (ret<0)? ret : -EREMOTEIO;
+                       }
+               } else {
+                       /* write bytes from buffer */
+                       ret = cpm_iic_write(cpm, addr, pmsg->buf, pmsg->len);
+                       if (cpm_debug)
+                               printk("i2c-algo-8xx.o: wrote %d\n", ret);
+                       if (ret < pmsg->len ) {
+                               return (ret<0) ? ret : -EREMOTEIO;
+                       }
+               }
+       }
+       return (num);
+}
+
+static u32 cpm_func(struct i2c_adapter *adap)
+{
+       return I2C_FUNC_SMBUS_EMUL | I2C_FUNC_10BIT_ADDR | 
+              I2C_FUNC_PROTOCOL_MANGLING; 
+}
+
+/* -----exported algorithm data: ------------------------------------- */
+
+static struct i2c_algorithm cpm_algo = {
+       .owner          = THIS_MODULE,
+       .name           = "MPC8xx CPM algorithm",
+       .id             = I2C_ALGO_MPC8XX,
+       .master_xfer    = cpm_xfer,
+       .functionality  = cpm_func,
+};
+
+/* 
+ * registering functions to load algorithms at runtime 
+ */
+int i2c_8xx_add_bus(struct i2c_adapter *adap)
+{
+       int i;
+       struct i2c_algo_8xx_data *cpm = adap->algo_data;
+
+       if (cpm_debug)
+               printk("i2c-algo-8xx.o: hw routines for %s registered.\n",
+                      adap->name);
+
+       /* register new adapter to i2c module... */
+
+       adap->id |= cpm_algo.id;
+       adap->algo = &cpm_algo;
+
+       i2c_add_adapter(adap);
+       cpm_iic_init(cpm);
+}
+
+
+int i2c_8xx_del_bus(struct i2c_adapter *adap)
+{
+       struct i2c_algo_8xx_data *cpm = adap->algo_data;
+
+       cpm_iic_shutdown(cpm);
+
+       return i2c_del_adapter(adap);
+}
+
+EXPORT_SYMBOL(i2c_8xx_add_bus);
+EXPORT_SYMBOL(i2c_8xx_del_bus);
+
+MODULE_AUTHOR("Brad Parker <brad@heeltoe.com>");
+MODULE_DESCRIPTION("I2C-Bus MPC8XX algorithm");
+MODULE_LICENSE("GPL");
diff -urN linux-2.4.24.org/drivers/i2c/i2c-algo-bit.c linux-2.4.24/drivers/i2c/i2c-algo-bit.c
--- linux-2.4.24.org/drivers/i2c/i2c-algo-bit.c 2004-02-04 22:33:47.392029625 +0100
+++ linux-2.4.24/drivers/i2c/i2c-algo-bit.c     2004-02-04 22:36:36.644833227 +0100
@@ -18,24 +18,22 @@
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               */
 /* ------------------------------------------------------------------------- */
 
-/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
-   Frodo Looijaard <frodol@dds.nl> */
+/* With some changes from Frodo Looijaard <frodol@dds.nl>, Kyösti Mälkki
+   <kmalkki@cc.hut.fi> and Jean Delvare <khali@linux-fr.org> */
 
-/* $Id$ */
+/* $Id$ */
 
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/init.h>
-#include <asm/uaccess.h>
-#include <linux/ioport.h>
 #include <linux/errno.h>
 #include <linux/sched.h>
-
 #include <linux/i2c.h>
 #include <linux/i2c-algo-bit.h>
 
+
 /* ----- global defines ----------------------------------------------- */
 #define DEB(x) if (i2c_debug>=1) x;
 #define DEB2(x) if (i2c_debug>=2) x;
@@ -43,27 +41,13 @@
 #define DEBPROTO(x) if (i2c_debug>=9) { x; }
        /* debug the protocol by showing transferred bits */
 
-/* debugging - slow down transfer to have a look at the data ..        */
-/* I use this with two leds&resistors, each one connected to sda,scl   */
-/* respectively. This makes sure that the algorithm works. Some chips   */
-/* might not like this, as they have an internal timeout of some mils  */
-/*
-#define SLO_IO      jif=jiffies;while(time_before_eq(jiffies, jif+i2c_table[minor].veryslow))\
-                        if (need_resched) schedule();
-*/
-
 
 /* ----- global variables ---------------------------------------------        */
 
-#ifdef SLO_IO
-       int jif;
-#endif
-
 /* module parameters:
  */
 static int i2c_debug;
 static int bit_test;   /* see if the line-setting functions work       */
-static int bit_scan;   /* have a look at what's hanging 'round         */
 
 /* --- setting states on the bus with the right timing: ---------------        */
 
@@ -88,9 +72,6 @@
 {
        setscl(adap,0);
        udelay(adap->udelay);
-#ifdef SLO_IO
-       SLO_IO
-#endif
 }
 
 /*
@@ -99,33 +80,35 @@
  */
 static inline int sclhi(struct i2c_algo_bit_data *adap)
 {
-       int start=jiffies;
+       int start;
 
        setscl(adap,1);
 
-       udelay(adap->udelay);
-
        /* Not all adapters have scl sense line... */
-       if (adap->getscl == NULL )
+       if (adap->getscl == NULL ) {
+               udelay(adap->udelay);
                return 0;
+       }
 
-       while (! getscl(adap) ) {       
+       start=jiffies;
+       while (! getscl(adap) ) {       
                /* the hw knows how to read the clock line,
                 * so we wait until it actually gets high.
                 * This is safer as some chips may hold it low
                 * while they are processing data internally. 
                 */
-               setscl(adap,1);
                if (time_after_eq(jiffies, start+adap->timeout)) {
                        return -ETIMEDOUT;
                }
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
                if (current->need_resched)
                        schedule();
+#else
+               cond_resched();
+#endif
        }
        DEBSTAT(printk(KERN_DEBUG "needed %ld jiffies\n", jiffies-start));
-#ifdef SLO_IO
-       SLO_IO
-#endif
+       udelay(adap->udelay);
        return 0;
 } 
 
@@ -144,7 +127,7 @@
        /* scl, sda may not be high */
        DEBPROTO(printk(" Sr "));
        setsda(adap,1);
-       setscl(adap,1);
+       sclhi(adap);
        udelay(adap->udelay);
        
        sdalo(adap);
@@ -178,7 +161,6 @@
        struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
 
        /* assert: scl is low */
-       DEB2(printk(KERN_DEBUG " i2c_outb:%2.2X\n",c&0xff));
        for ( i=7 ; i>=0 ; i-- ) {
                sb = c & ( 1 << i );
                setsda(adap,sb);
@@ -186,6 +168,7 @@
                DEBPROTO(printk(KERN_DEBUG "%d",sb!=0));
                if (sclhi(adap)<0) { /* timed out */
                        sdahi(adap); /* we don't want to block the net */
+                       DEB2(printk(KERN_DEBUG " i2c_outb: 0x%02x, timeout at bit #%d\n", c&0xff, i));
                        return -ETIMEDOUT;
                };
                /* do arbitration here: 
@@ -196,11 +179,12 @@
        }
        sdahi(adap);
        if (sclhi(adap)<0){ /* timeout */
+               DEB2(printk(KERN_DEBUG " i2c_outb: 0x%02x, timeout at ack\n", c&0xff));
                return -ETIMEDOUT;
        };
        /* read ack: SDA should be pulled down by slave */
        ack=getsda(adap);       /* ack: sda is pulled low ->success.     */
-       DEB2(printk(KERN_DEBUG " i2c_outb: getsda() =  0x%2.2x\n", ~ack ));
+       DEB2(printk(KERN_DEBUG " i2c_outb: 0x%02x , getsda() = %d\n", c & 0xff, ack));
 
        DEBPROTO( printk(KERN_DEBUG "[%2.2x]",c&0xff) );
        DEBPROTO(if (0==ack){ printk(KERN_DEBUG " A ");} else printk(KERN_DEBUG " NA ") );
@@ -219,11 +203,10 @@
        struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
 
        /* assert: scl is low */
-       DEB2(printk(KERN_DEBUG "i2c_inb.\n"));
-
        sdahi(adap);
        for (i=0;i<8;i++) {
                if (sclhi(adap)<0) { /* timeout */
+                       DEB2(printk(KERN_DEBUG " i2c_inb: timeout at bit #%d\n", 7-i));
                        return -ETIMEDOUT;
                };
                indata *= 2;
@@ -232,6 +215,8 @@
                scllo(adap);
        }
        /* assert: scl is low */
+       DEB2(printk(KERN_DEBUG "i2c_inb: 0x%02x\n", indata & 0xff));
+
        DEBPROTO(printk(KERN_DEBUG " 0x%02x", indata & 0xff));
        return (int) (indata & 0xff);
 }
@@ -242,71 +227,75 @@
  */
 static int test_bus(struct i2c_algo_bit_data *adap, char* name) {
        int scl,sda;
+
+       if (adap->getscl==NULL)
+               printk(KERN_INFO "i2c-algo-bit.o: Testing SDA only, "
+                       "SCL is not readable.\n");
+
        sda=getsda(adap);
-       if (adap->getscl==NULL) {
-               printk("i2c-algo-bit.o: Warning: Adapter can't read from clock line - skipping test.\n");
-               return 0;               
-       }
-       scl=getscl(adap);
-       printk("i2c-algo-bit.o: Adapter: %s scl: %d  sda: %d -- testing...\n",
-              name,getscl(adap),getsda(adap));
+       scl=(adap->getscl==NULL?1:getscl(adap));
+       printk(KERN_DEBUG "i2c-algo-bit.o: (0) scl=%d, sda=%d\n",scl,sda);
        if (!scl || !sda ) {
-               printk("i2c-algo-bit.o: %s seems to be busy.\n",name);
+               printk(KERN_WARNING "i2c-algo-bit.o: %s seems to be busy.\n", name);
                goto bailout;
        }
+
        sdalo(adap);
-       printk("i2c-algo-bit.o:1 scl: %d  sda: %d \n",getscl(adap),
-              getsda(adap));
-       if ( 0 != getsda(adap) ) {
-               printk("i2c-algo-bit.o: %s SDA stuck high!\n",name);
-               sdahi(adap);
+       sda=getsda(adap);
+       scl=(adap->getscl==NULL?1:getscl(adap));
+       printk(KERN_DEBUG "i2c-algo-bit.o: (1) scl=%d, sda=%d\n",scl,sda);
+       if ( 0 != sda ) {
+               printk(KERN_WARNING "i2c-algo-bit.o: SDA stuck high!\n");
                goto bailout;
        }
-       if ( 0 == getscl(adap) ) {
-               printk("i2c-algo-bit.o: %s SCL unexpected low while pulling SDA low!\n",
-                       name);
+       if ( 0 == scl ) {
+               printk(KERN_WARNING "i2c-algo-bit.o: SCL unexpected low "
+                       "while pulling SDA low!\n");
                goto bailout;
        }               
+
        sdahi(adap);
-       printk("i2c-algo-bit.o:2 scl: %d  sda: %d \n",getscl(adap),
-              getsda(adap));
-       if ( 0 == getsda(adap) ) {
-               printk("i2c-algo-bit.o: %s SDA stuck low!\n",name);
-               sdahi(adap);
+       sda=getsda(adap);
+       scl=(adap->getscl==NULL?1:getscl(adap));
+       printk(KERN_DEBUG "i2c-algo-bit.o: (2) scl=%d, sda=%d\n",scl,sda);
+       if ( 0 == sda ) {
+               printk(KERN_WARNING "i2c-algo-bit.o: SDA stuck low!\n");
                goto bailout;
        }
-       if ( 0 == getscl(adap) ) {
-               printk("i2c-algo-bit.o: %s SCL unexpected low while SDA high!\n",
-                      name);
-       goto bailout;
+       if ( 0 == scl ) {
+               printk(KERN_WARNING "i2c-algo-bit.o: SCL unexpected low "
+                       "while pulling SDA high!\n");
+               goto bailout;
        }
+
        scllo(adap);
-       printk("i2c-algo-bit.o:3 scl: %d  sda: %d \n",getscl(adap),
-              getsda(adap));
-       if ( 0 != getscl(adap) ) {
-               printk("i2c-algo-bit.o: %s SCL stuck high!\n",name);
-               sclhi(adap);
+       sda=getsda(adap);
+       scl=(adap->getscl==NULL?0:getscl(adap));
+       printk(KERN_DEBUG "i2c-algo-bit.o: (3) scl=%d, sda=%d\n",scl,sda);
+       if ( 0 != scl ) {
+               printk(KERN_WARNING "i2c-algo-bit.o: SCL stuck high!\n");
                goto bailout;
        }
-       if ( 0 == getsda(adap) ) {
-               printk("i2c-algo-bit.o: %s SDA unexpected low while pulling SCL low!\n",
-                       name);
+       if ( 0 == sda ) {
+               printk(KERN_WARNING "i2c-algo-bit.o: SDA unexpected low "
+                       "while pulling SCL low!\n");
                goto bailout;
        }
+       
        sclhi(adap);
-       printk("i2c-algo-bit.o:4 scl: %d  sda: %d \n",getscl(adap),
-              getsda(adap));
-       if ( 0 == getscl(adap) ) {
-               printk("i2c-algo-bit.o: %s SCL stuck low!\n",name);
-               sclhi(adap);
+       sda=getsda(adap);
+       scl=(adap->getscl==NULL?1:getscl(adap));
+       printk(KERN_DEBUG "i2c-algo-bit.o: (4) scl=%d, sda=%d\n",scl,sda);
+       if ( 0 == scl ) {
+               printk(KERN_WARNING "i2c-algo-bit.o: SCL stuck low!\n");
                goto bailout;
        }
-       if ( 0 == getsda(adap) ) {
-               printk("i2c-algo-bit.o: %s SDA unexpected low while SCL high!\n",
-                       name);
+       if ( 0 == sda ) {
+               printk(KERN_WARNING "i2c-algo-bit.o: SDA unexpected low "
+                       "while pulling SCL high!\n");
                goto bailout;
        }
-       printk("i2c-algo-bit.o: %s passed test.\n",name);
+       printk(KERN_INFO "i2c-algo-bit.o: %s passed test.\n",name);
        return 0;
 bailout:
        sdahi(adap);
@@ -340,16 +329,21 @@
                i2c_start(adap);
                udelay(adap->udelay);
        }
-       DEB2(if (i) printk(KERN_DEBUG "i2c-algo-bit.o: needed %d retries for %d\n",
-                          i,addr));
+       DEB2(if (i)
+            printk(KERN_DEBUG "i2c-algo-bit.o: Used %d tries to %s client at 0x%02x : %s\n",
+                   i+1, addr & 1 ? "read" : "write", addr>>1,
+                   ret==1 ? "success" : ret==0 ? "no ack" : "failed, timeout?" )
+           );
        return ret;
 }
 
-static int sendbytes(struct i2c_adapter *i2c_adap,const char *buf, int count)
+static int sendbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
 {
        struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
        char c;
-       const char *temp = buf;
+       const char *temp = msg->buf;
+       int count = msg->len;
+       unsigned short nak_ok = msg->flags & I2C_M_IGNORE_NAK; 
        int retval;
        int wrcount=0;
 
@@ -358,7 +352,7 @@
                DEB2(printk(KERN_DEBUG "i2c-algo-bit.o: %s sendbytes: writing %2.2X\n",
                            i2c_adap->name, c&0xff));
                retval = i2c_outb(i2c_adap,c);
-               if (retval>0) {
+               if ((retval>0) || (nak_ok && (retval==0)))  { /* ok or ignored NAK */
                        count--; 
                        temp++;
                        wrcount++;
@@ -377,12 +371,18 @@
        return wrcount;
 }
 
-static inline int readbytes(struct i2c_adapter *i2c_adap,char *buf,int count)
+static inline int readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
 {
-       char *temp = buf;
        int inval;
        int rdcount=0;          /* counts bytes read */
        struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
+       char *temp = msg->buf;
+       int count = msg->len;
+       int recv_len = 0;
+
+       /* Receive [Count] for I2C_SMBUS_BLOCK_DATA or I2C_SMBUS_BLOCK_PROC_CALL protocol */
+       if (msg->flags & I2C_M_RECV_LEN)
+               recv_len = 1;
 
        while (count > 0) {
                inval = i2c_inb(i2c_adap);
@@ -395,6 +395,20 @@
                        break;
                }
 
+               if (recv_len) {
+                       recv_len = 0;
+                       /* [Count] should be between 1 and 31 (I2C_SMBUS_BLOCK_MAX - 1). */
+                       if (inval > 0 && inval < I2C_SMBUS_BLOCK_MAX) {
+                               count = inval + 1;      /* plus one for [Count] itself */
+                               msg->len = count;
+                               if (msg->flags & I2C_M_RECV_PEC)
+                                       count++; /* plus one for PEC */
+                       } else {
+                               printk(KERN_ERR "i2c-algo-bit.o: readbytes: bad block count (%d).\n", inval);
+                               break;
+                       }
+               }
+               
                if ( count > 1 ) {              /* send ack */
                        sdalo(adap);
                        DEBPROTO(printk(" Am "));
@@ -419,31 +433,34 @@
  * try_address) and transmits the address in the necessary format to handle
  * reads, writes as well as 10bit-addresses.
  * returns:
- *  0 everything went okay, the chip ack'ed
+ *  0 everything went okay, the chip ack'ed, or IGNORE_NAK flag was set
  * -x an error occurred (like: -EREMOTEIO if the device did not answer, or
  *     -ETIMEDOUT, for example if the lines are stuck...) 
  */
-static inline int bit_doAddress(struct i2c_adapter *i2c_adap,
-                                struct i2c_msg *msg, int retries) 
+static inline int bit_doAddress(struct i2c_adapter *i2c_adap, struct i2c_msg *msg) 
 {
        unsigned short flags = msg->flags;
+       unsigned short nak_ok = msg->flags & I2C_M_IGNORE_NAK;
        struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
 
        unsigned char addr;
-       int ret;
+       int ret, retries;
+
+       retries = nak_ok ? 0 : i2c_adap->retries;
+       
        if ( (flags & I2C_M_TEN)  ) { 
                /* a ten bit address */
                addr = 0xf0 | (( msg->addr >> 7) & 0x03);
                DEB2(printk(KERN_DEBUG "addr0: %d\n",addr));
                /* try extended address code...*/
                ret = try_address(i2c_adap, addr, retries);
-               if (ret!=1) {
+               if ((ret != 1) && !nak_ok)  {
                        printk(KERN_ERR "died at extended address code.\n");
                        return -EREMOTEIO;
                }
                /* the remaining 8 bit address */
                ret = i2c_outb(i2c_adap,msg->addr & 0x7f);
-               if (ret != 1) {
+               if ((ret != 1) && !nak_ok) {
                        /* the chip did not ack / xmission error occurred */
                        printk(KERN_ERR "died at 2nd address code.\n");
                        return -EREMOTEIO;
@@ -453,7 +470,7 @@
                        /* okay, now switch into reading mode */
                        addr |= 0x01;
                        ret = try_address(i2c_adap, addr, retries);
-                       if (ret!=1) {
+                       if ((ret!=1) && !nak_ok) {
                                printk(KERN_ERR "died at extended address code.\n");
                                return -EREMOTEIO;
                        }
@@ -465,10 +482,10 @@
                if (flags & I2C_M_REV_DIR_ADDR )
                        addr ^= 1;
                ret = try_address(i2c_adap, addr, retries);
-               if (ret!=1) {
+               if ((ret!=1) && !nak_ok)
                        return -EREMOTEIO;
-               }
        }
+
        return 0;
 }
 
@@ -479,16 +496,18 @@
        struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
        
        int i,ret;
+       unsigned short nak_ok;
 
        i2c_start(adap);
        for (i=0;i<num;i++) {
                pmsg = &msgs[i];
+               nak_ok = pmsg->flags & I2C_M_IGNORE_NAK; 
                if (!(pmsg->flags & I2C_M_NOSTART)) {
                        if (i) {
                                i2c_repstart(adap);
                        }
-                       ret = bit_doAddress(i2c_adap,pmsg,i2c_adap->retries);
-                       if (ret != 0) {
+                       ret = bit_doAddress(i2c_adap, pmsg);
+                       if ((ret != 0) && !nak_ok) {
                                DEB2(printk(KERN_DEBUG "i2c-algo-bit.o: NAK from device addr %2.2x msg #%d\n",
                                        msgs[i].addr,i));
                                return (ret<0) ? ret : -EREMOTEIO;
@@ -496,14 +515,14 @@
                }
                if (pmsg->flags & I2C_M_RD ) {
                        /* read bytes into buffer*/
-                       ret = readbytes(i2c_adap,pmsg->buf,pmsg->len);
+                       ret = readbytes(i2c_adap, pmsg);
                        DEB2(printk(KERN_DEBUG "i2c-algo-bit.o: read %d bytes.\n",ret));
                        if (ret < pmsg->len ) {
                                return (ret<0)? ret : -EREMOTEIO;
                        }
                } else {
                        /* write bytes from buffer */
-                       ret = sendbytes(i2c_adap,pmsg->buf,pmsg->len);
+                       ret = sendbytes(i2c_adap, pmsg);
                        DEB2(printk(KERN_DEBUG "i2c-algo-bit.o: wrote %d bytes.\n",ret));
                        if (ret < pmsg->len ) {
                                return (ret<0) ? ret : -EREMOTEIO;
@@ -514,30 +533,25 @@
        return num;
 }
 
-static int algo_control(struct i2c_adapter *adapter, 
-       unsigned int cmd, unsigned long arg)
-{
-       return 0;
-}
-
-static u32 bit_func(struct i2c_adapter *adap)
+static u32 bit_func(struct i2c_adapter *i2c_adap)
 {
        return I2C_FUNC_SMBUS_EMUL | I2C_FUNC_10BIT_ADDR | 
-              I2C_FUNC_PROTOCOL_MANGLING;
+              I2C_FUNC_PROTOCOL_MANGLING |
+              I2C_FUNC_SMBUS_BLOCK_PROC_CALL |
+              I2C_FUNC_SMBUS_READ_BLOCK_DATA |
+              I2C_FUNC_SMBUS_BLOCK_PROC_CALL_PEC |
+              I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC;
 }
 
 
 /* -----exported algorithm data: ------------------------------------- */
 
 static struct i2c_algorithm i2c_bit_algo = {
-       "Bit-shift algorithm",
-       I2C_ALGO_BIT,
-       bit_xfer,
-       NULL,
-       NULL,                           /* slave_xmit           */
-       NULL,                           /* slave_recv           */
-       algo_control,                   /* ioctl                */
-       bit_func,                       /* functionality        */
+       .owner          = THIS_MODULE,
+       .name           = "Bit-shift algorithm",
+       .id             = I2C_ALGO_BIT,
+       .master_xfer    = bit_xfer,
+       .functionality  = bit_func,
 };
 
 /* 
@@ -545,7 +559,6 @@
  */
 int i2c_bit_add_bus(struct i2c_adapter *adap)
 {
-       int i;
        struct i2c_algo_bit_data *bit_adap = adap->algo_data;
 
        if (bit_test) {
@@ -565,78 +578,26 @@
        adap->timeout = 100;    /* default values, should       */
        adap->retries = 3;      /* be replaced by defines       */
 
-       /* scan bus */
-       if (bit_scan) {
-               int ack;
-               printk(KERN_INFO " i2c-algo-bit.o: scanning bus %s.\n",
-                      adap->name);
-               for (i = 0x00; i < 0xff; i+=2) {
-                       i2c_start(bit_adap);
-                       ack = i2c_outb(adap,i);
-                       i2c_stop(bit_adap);
-                       if (ack>0) {
-                               printk("(%02x)",i>>1); 
-                       } else 
-                               printk("."); 
-               }
-               printk("\n");
-       }
-
-#ifdef MODULE
-       MOD_INC_USE_COUNT;
-#endif
        i2c_add_adapter(adap);
-
        return 0;
 }
 
 
 int i2c_bit_del_bus(struct i2c_adapter *adap)
 {
-       int res;
-
-       if ((res = i2c_del_adapter(adap)) < 0)
-               return res;
-
-       DEB2(printk("i2c-algo-bit.o: adapter unregistered: %s\n",adap->name));
-
-#ifdef MODULE
-       MOD_DEC_USE_COUNT;
-#endif
-       return 0;
-}
-
-int __init i2c_algo_bit_init (void)
-{
-       printk(KERN_INFO "i2c-algo-bit.o: i2c bit algorithm module\n");
-       return 0;
+       return i2c_del_adapter(adap);
 }
 
-
-
 EXPORT_SYMBOL(i2c_bit_add_bus);
 EXPORT_SYMBOL(i2c_bit_del_bus);
 
-#ifdef MODULE
 MODULE_AUTHOR("Simon G. Vogl <simon@tk.uni-linz.ac.at>");
 MODULE_DESCRIPTION("I2C-Bus bit-banging algorithm");
 MODULE_LICENSE("GPL");
 
 MODULE_PARM(bit_test, "i");
-MODULE_PARM(bit_scan, "i");
 MODULE_PARM(i2c_debug,"i");
 
 MODULE_PARM_DESC(bit_test, "Test the lines of the bus to see if it is stuck");
-MODULE_PARM_DESC(bit_scan, "Scan for active chips on the bus");
 MODULE_PARM_DESC(i2c_debug,
             "debug level - 0 off; 1 normal; 2,3 more verbose; 9 bit-protocol");
-
-int init_module(void) 
-{
-       return i2c_algo_bit_init();
-}
-
-void cleanup_module(void) 
-{
-}
-#endif
diff -urN linux-2.4.24.org/drivers/i2c/i2c-algo-ibm_ocp.c linux-2.4.24/drivers/i2c/i2c-algo-ibm_ocp.c
--- linux-2.4.24.org/drivers/i2c/i2c-algo-ibm_ocp.c     1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.24/drivers/i2c/i2c-algo-ibm_ocp.c 2004-02-04 22:36:36.653831355 +0100
@@ -0,0 +1,901 @@
+/*
+   -------------------------------------------------------------------------
+   i2c-algo-ibm_ocp.c i2c driver algorithms for IBM PPC 405 adapters       
+   -------------------------------------------------------------------------
+      
+   Ian DaSilva, MontaVista Software, Inc.
+   idasilva@mvista.com or source@mvista.com
+
+   Copyright 2000 MontaVista Software Inc.
+
+   Changes made to support the IIC peripheral on the IBM PPC 405
+
+
+   ---------------------------------------------------------------------------
+   This file was highly leveraged from i2c-algo-pcf.c, which was created
+   by Simon G. Vogl and Hans Berglund:
+
+
+     Copyright (C) 1995-1997 Simon G. Vogl
+                   1998-2000 Hans Berglund
+
+   With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and 
+   Frodo Looijaard <frodol@dds.nl> ,and also from Martin Bailey
+   <mbailey@littlefeet-inc.com>
+
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+   ---------------------------------------------------------------------------
+
+   History: 01/20/12 - Armin
+       akuster@mvista.com
+       ported up to 2.4.16+    
+
+   Version 02/03/25 - Armin
+       converted to ocp format
+       removed commented out or #if 0 code
+       added Gérard Basler's fix to iic_combined_transaction() such that it 
+       returns the number of successfully completed transfers .
+*/
+
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-ibm_ocp.h>
+#include <asm/ocp.h>
+
+
+/* ----- global defines ----------------------------------------------- */
+#define DEB(x) if (i2c_debug>=1) x
+#define DEB2(x) if (i2c_debug>=2) x
+#define DEB3(x) if (i2c_debug>=3) x /* print several statistical values*/
+#define DEBPROTO(x) if (i2c_debug>=9) x;
+       /* debug the protocol by showing transferred bits */
+#define DEF_TIMEOUT 5
+
+
+/* ----- global variables ---------------------------------------------        */
+
+
+/* module parameters:
+ */
+static int i2c_debug=0;
+
+/* --- setting states on the bus with the right timing: ---------------        */
+
+#define iic_outb(adap, reg, val) adap->setiic(adap->data, (int) &(reg), val)
+#define iic_inb(adap, reg) adap->getiic(adap->data, (int) &(reg))
+
+#define IICO_I2C_SDAHIGH       0x0780
+#define IICO_I2C_SDALOW                0x0781
+#define IICO_I2C_SCLHIGH       0x0782
+#define IICO_I2C_SCLLOW                0x0783
+#define IICO_I2C_LINEREAD      0x0784
+
+#define IIC_SINGLE_XFER                0
+#define IIC_COMBINED_XFER      1
+
+#define IIC_ERR_LOST_ARB        -2
+#define IIC_ERR_INCOMPLETE_XFR  -3
+#define IIC_ERR_NACK            -1
+
+/* --- other auxiliary functions --------------------------------------        */
+
+
+//
+// Description: Puts this process to sleep for a period equal to timeout 
+//
+static inline void iic_sleep(unsigned long timeout)
+{
+       schedule_timeout( timeout * HZ);
+}
+
+
+//
+// Description: This performs the IBM PPC 405 IIC initialization sequence
+// as described in the PPC405GP data book.
+//
+static int iic_init (struct i2c_algo_iic_data *adap)
+{
+       struct iic_regs *iic;   
+       struct iic_ibm *adap_priv_data = adap->data;
+       unsigned short  retval;
+       iic = (struct iic_regs *) adap_priv_data->iic_base;
+
+        /* Clear master low master address */
+        iic_outb(adap,iic->lmadr, 0);
+
+        /* Clear high master address */
+        iic_outb(adap,iic->hmadr, 0);
+
+        /* Clear low slave address */
+        iic_outb(adap,iic->lsadr, 0);
+
+        /* Clear high slave address */
+        iic_outb(adap,iic->hsadr, 0);
+
+        /* Clear status */
+        iic_outb(adap,iic->sts, 0x0a);
+
+        /* Clear extended status */
+        iic_outb(adap,iic->extsts, 0x8f);
+
+        /* Set clock division */
+        iic_outb(adap,iic->clkdiv, 0x04);
+
+       retval = iic_inb(adap, iic->clkdiv);
+       DEB(printk("iic_init: CLKDIV register = %x\n", retval));
+
+        /* Enable interrupts on Requested Master Transfer Complete */
+        iic_outb(adap,iic->intmsk, 0x01);
+
+        /* Clear transfer count */
+        iic_outb(adap,iic->xfrcnt, 0x0);
+
+        /* Clear extended control and status */
+        iic_outb(adap,iic->xtcntlss, 0xf0);
+
+        /* Set mode control (flush master data buf, enable hold SCL, exit */
+        /* unknown state.                                                 */
+        iic_outb(adap,iic->mdcntl, 0x47);
+
+        /* Clear control register */
+        iic_outb(adap,iic->cntl, 0x0);
+
+        DEB2(printk(KERN_DEBUG "iic_init: Initialized IIC on PPC 405\n"));
+        return 0;
+}
+
+
+//
+// Description: After we issue a transaction on the IIC bus, this function
+// is called.  It puts this process to sleep until we get an interrupt from
+// from the controller telling us that the transaction we requested in complete.
+//
+static int wait_for_pin(struct i2c_algo_iic_data *adap, int *status) 
+{
+
+       int timeout = DEF_TIMEOUT;
+       int retval;
+       struct iic_regs *iic;
+       struct iic_ibm *adap_priv_data = adap->data;
+       iic = (struct iic_regs *) adap_priv_data->iic_base;
+
+
+       *status = iic_inb(adap, iic->sts);
+#ifndef STUB_I2C
+
+       while (timeout-- && (*status & 0x01)) {
+          adap->waitforpin(adap->data);
+          *status = iic_inb(adap, iic->sts);
+       }
+#endif
+       if (timeout <= 0) {
+          /* Issue stop signal on the bus, and force an interrupt */
+           retval = iic_inb(adap, iic->cntl);
+           iic_outb(adap, iic->cntl, retval | 0x80);
+           /* Clear status register */
+          iic_outb(adap, iic->sts, 0x0a);
+          /* Exit unknown bus state */
+          retval = iic_inb(adap, iic->mdcntl);
+          iic_outb(adap, iic->mdcntl, (retval | 0x02));
+
+          // Check the status of the controller.  Does it still see a
+          // pending transfer, even though we've tried to stop any
+          // ongoing transaction?
+           retval = iic_inb(adap, iic->sts);
+           retval = retval & 0x01;
+           if(retval) {
+             // The iic controller is hosed.  It is not responding to any
+             // of our commands.  We have already tried to force it into
+             // a known state, but it has not worked.  Our only choice now
+             // is a soft reset, which will clear all registers, and force
+             // us to re-initialize the controller.
+             /* Soft reset */
+              iic_outb(adap, iic->xtcntlss, 0x01);
+              udelay(500);
+              iic_init(adap);
+             /* Is the pending transfer bit in the sts reg finally cleared? */
+              retval = iic_inb(adap, iic->sts);
+              retval = retval & 0x01;
+              if(retval) {
+                 printk(KERN_CRIT "The IIC Controller is hosed.  A processor reset is required\n");
+              }
+             // For some reason, even though the interrupt bit in this
+             // register was set during iic_init, it didn't take.  We
+             // need to set it again.  Don't ask me why....this is just what
+             // I saw when testing timeouts.
+              iic_outb(adap, iic->intmsk, 0x01);
+           }
+          return(-1);
+       }
+       else
+          return(0);
+}
+
+
+//------------------------------------
+// Utility functions
+//
+
+
+//
+// Description: Look at the status register to see if there was an error
+// in the requested transaction.  If there is, look at the extended status
+// register and determine the exact cause.
+//
+int analyze_status(struct i2c_algo_iic_data *adap, int *error_code)
+{
+   int ret;
+   struct iic_regs *iic;
+   struct iic_ibm *adap_priv_data = adap->data;
+   iic = (struct iic_regs *) adap_priv_data->iic_base;
+
+       
+   ret = iic_inb(adap, iic->sts);
+   if(ret & 0x04) {
+      // Error occurred
+      ret = iic_inb(adap, iic->extsts);
+      if(ret & 0x04) {
+         // Lost arbitration
+         *error_code =  IIC_ERR_LOST_ARB;
+      }
+      if(ret & 0x02) {
+         // Incomplete transfer
+         *error_code = IIC_ERR_INCOMPLETE_XFR;
+      }
+      if(ret & 0x01) {
+         // Master transfer aborted by a NACK during the transfer of the 
+        // address byte
+         *error_code = IIC_ERR_NACK;
+      }
+      return -1;
+   }
+   return 0;
+}
+
+
+//
+// Description: This function is called by the upper layers to do the
+// grunt work for a master send transaction
+//
+static int iic_sendbytes(struct i2c_adapter *i2c_adap,const char *buf,
+                         int count, int xfer_flag)
+{
+       struct iic_regs *iic;
+       struct i2c_algo_iic_data *adap = i2c_adap->algo_data;
+       struct iic_ibm *adap_priv_data = adap->data;
+       int wrcount, status, timeout;
+       int loops, remainder, i, j;
+       int ret, error_code;
+       iic = (struct iic_regs *) adap_priv_data->iic_base;
+
+ 
+       if( count == 0 ) return 0;
+       wrcount = 0;
+       loops =  count / 4;
+       remainder = count % 4;
+
+       if((loops > 1) && (remainder == 0)) {
+          for(i=0; i<(loops-1); i++) {
+                     //
+             // Write four bytes to master data buffer
+             //
+             for(j=0; j<4; j++) {
+                iic_outb(adap, iic->mdbuf, 
+                buf[wrcount++]);
+             }
+             //
+             // Issue command to IICO device to begin transmission
+             //
+             iic_outb(adap, iic->cntl, 0x35);
+             //
+             // Wait for transmission to complete.  When it does, 
+             //loop to the top of the for statement and write the 
+             // next four bytes.
+             //
+             timeout = wait_for_pin(adap, &status);
+             if(timeout < 0) {
+                //
+                // Error handling
+                //
+                 //printk(KERN_ERR "Error: write timeout\n");
+                 return wrcount;
+             }
+             ret = analyze_status(adap, &error_code);
+             if(ret < 0) {
+                 if(error_code == IIC_ERR_INCOMPLETE_XFR) {
+                    // Return the number of bytes transferred
+                    ret = iic_inb(adap, iic->xfrcnt);
+                    ret = ret & 0x07;
+                    return (wrcount-4+ret);
+                 }
+                 else return error_code;
+              }
+           }
+       }
+       else if((loops >= 1) && (remainder > 0)){
+          //printk(KERN_DEBUG "iic_sendbytes: (loops >= 1)\n");
+          for(i=0; i<loops; i++) {
+              //
+              // Write four bytes to master data buffer
+              //
+              for(j=0; j<4; j++) {
+                 iic_outb(adap, iic->mdbuf,
+                 buf[wrcount++]);
+              }
+              //
+              // Issue command to IICO device to begin transmission
+              //
+              iic_outb(adap, iic->cntl, 0x35);
+              //
+              // Wait for transmission to complete.  When it does,
+              //loop to the top of the for statement and write the
+              // next four bytes.
+              //
+              timeout = wait_for_pin(adap, &status);
+              if(timeout < 0) {
+                 //
+                 // Error handling
+                 //
+                 //printk(KERN_ERR "Error: write timeout\n");
+                 return wrcount;
+              }
+              ret = analyze_status(adap, &error_code);
+              if(ret < 0) {
+                 if(error_code == IIC_ERR_INCOMPLETE_XFR) {
+                    // Return the number of bytes transferred
+                    ret = iic_inb(adap, iic->xfrcnt);
+                    ret = ret & 0x07;
+                    return (wrcount-4+ret);
+                 }
+                 else return error_code;
+              }
+           }
+        }
+
+       //printk(KERN_DEBUG "iic_sendbytes: expedite write\n");
+       if(remainder == 0) remainder = 4;
+       // remainder = remainder - 1;
+       //
+       // Write the remaining bytes (less than or equal to 4)
+       //
+       for(i=0; i<remainder; i++) {
+          iic_outb(adap, iic->mdbuf, buf[wrcount++]);
+          //printk(KERN_DEBUG "iic_sendbytes:  data transferred = %x, wrcount = %d\n", buf[wrcount-1], (wrcount-1));
+       }
+        //printk(KERN_DEBUG "iic_sendbytes: Issuing write\n");
+
+        if(xfer_flag == IIC_COMBINED_XFER) {
+           iic_outb(adap, iic->cntl, (0x09 | ((remainder-1) << 4)));
+        }
+       else {
+           iic_outb(adap, iic->cntl, (0x01 | ((remainder-1) << 4)));
+        }
+       DEB2(printk(KERN_DEBUG "iic_sendbytes: Waiting for interrupt\n"));
+       timeout = wait_for_pin(adap, &status);
+        if(timeout < 0) {
+                  //
+           // Error handling
+           //
+           //printk(KERN_ERR "Error: write timeout\n");
+           return wrcount;
+        }
+        ret = analyze_status(adap, &error_code);
+        if(ret < 0) {
+           if(error_code == IIC_ERR_INCOMPLETE_XFR) {
+              // Return the number of bytes transferred
+              ret = iic_inb(adap, iic->xfrcnt);
+              ret = ret & 0x07;
+              return (wrcount-4+ret);
+           }
+           else return error_code;
+        }
+       DEB2(printk(KERN_DEBUG "iic_sendbytes: Got interrupt\n"));
+       return wrcount;
+}
+
+
+//
+// Description: Called by the upper layers to do the grunt work for
+// a master read transaction.
+//
+static int iic_readbytes(struct i2c_adapter *i2c_adap, char *buf, int count, int xfer_type)
+{
+       struct iic_regs *iic;
+       int rdcount=0, i, status, timeout;
+       struct i2c_algo_iic_data *adap = i2c_adap->algo_data;
+       struct iic_ibm *adap_priv_data = adap->data;
+       int loops, remainder, j;
+        int ret, error_code;
+       iic = (struct iic_regs *) adap_priv_data->iic_base;
+
+       if(count == 0) return 0;
+       loops = count / 4;
+       remainder = count % 4;
+
+       //printk(KERN_DEBUG "iic_readbytes: loops = %d, remainder = %d\n", loops, remainder);
+
+       if((loops > 1) && (remainder == 0)) {
+       //printk(KERN_DEBUG "iic_readbytes: (loops > 1) && (remainder == 0)\n");
+          for(i=0; i<(loops-1); i++) {
+             //
+              // Issue command to begin master read (4 bytes maximum)
+              //
+             //printk(KERN_DEBUG "--->Issued read command\n");
+             iic_outb(adap, iic->cntl, 0x37);
+             //
+              // Wait for transmission to complete.  When it does,
+              // loop to the top of the for statement and write the
+              // next four bytes.
+              //
+             //printk(KERN_DEBUG "--->Waiting for interrupt\n");
+              timeout = wait_for_pin(adap, &status);
+              if(timeout < 0) {
+                // Error Handler
+                //printk(KERN_ERR "Error: read timed out\n");
+                 return rdcount;
+             }
+              //printk(KERN_DEBUG "--->Got interrupt\n");
+
+              ret = analyze_status(adap, &error_code);
+             if(ret < 0) {
+                 if(error_code == IIC_ERR_INCOMPLETE_XFR)
+                    return rdcount;
+                 else
+                    return error_code;
+              }
+
+             for(j=0; j<4; j++) {
+                 // Wait for data to shuffle to top of data buffer
+                 // This value needs to optimized.
+                udelay(1);
+                buf[rdcount] = iic_inb(adap, iic->mdbuf);
+                rdcount++;
+                //printk(KERN_DEBUG "--->Read one byte\n");
+              }
+           }
+       }
+
+       else if((loops >= 1) && (remainder > 0)){
+       //printk(KERN_DEBUG "iic_readbytes: (loops >=1) && (remainder > 0)\n");
+          for(i=0; i<loops; i++) {
+              //
+              // Issue command to begin master read (4 bytes maximum)
+              //
+              //printk(KERN_DEBUG "--->Issued read command\n");
+              iic_outb(adap, iic->cntl, 0x37);
+              //
+              // Wait for transmission to complete.  When it does,
+              // loop to the top of the for statement and write the
+              // next four bytes.
+              //
+              //printk(KERN_DEBUG "--->Waiting for interrupt\n");
+              timeout = wait_for_pin(adap, &status);
+              if(timeout < 0) {
+                 // Error Handler
+                 //printk(KERN_ERR "Error: read timed out\n");
+                 return rdcount;
+              }
+              //printk(KERN_DEBUG "--->Got interrupt\n");
+
+              ret = analyze_status(adap, &error_code);
+              if(ret < 0) {
+                 if(error_code == IIC_ERR_INCOMPLETE_XFR)
+                    return rdcount;
+                 else
+                    return error_code;
+              }
+
+              for(j=0; j<4; j++) {
+                 // Wait for data to shuffle to top of data buffer
+                 // This value needs to optimized.
+                 udelay(1);
+                 buf[rdcount] = iic_inb(adap, iic->mdbuf);
+                 rdcount++;
+                 //printk(KERN_DEBUG "--->Read one byte\n");
+              }
+           }
+        }
+
+       //printk(KERN_DEBUG "iic_readbytes: expedite read\n");
+       if(remainder == 0) remainder = 4;
+       DEB2(printk(KERN_DEBUG "iic_readbytes: writing %x to IICO_CNTL\n", (0x03 | ((remainder-1) << 4))));
+
+       if(xfer_type == IIC_COMBINED_XFER) {
+          iic_outb(adap, iic->cntl, (0x0b | ((remainder-1) << 4)));
+        }
+        else {
+          iic_outb(adap, iic->cntl, (0x03 | ((remainder-1) << 4)));
+        }
+       DEB2(printk(KERN_DEBUG "iic_readbytes: Wait for pin\n"));
+        timeout = wait_for_pin(adap, &status);
+       DEB2(printk(KERN_DEBUG "iic_readbytes: Got the interrupt\n"));
+        if(timeout < 0) {
+           // Error Handler
+          //printk(KERN_ERR "Error: read timed out\n");
+           return rdcount;
+        }
+
+        ret = analyze_status(adap, &error_code);
+        if(ret < 0) {
+           if(error_code == IIC_ERR_INCOMPLETE_XFR)
+              return rdcount;
+           else
+              return error_code;
+        }
+
+       //printk(KERN_DEBUG "iic_readbyte: Begin reading data buffer\n");
+       for(i=0; i<remainder; i++) {
+          buf[rdcount] = iic_inb(adap, iic->mdbuf);
+          // printk(KERN_DEBUG "iic_readbytes:  Character read = %x\n", buf[rdcount]);
+           rdcount++;
+       }
+
+       return rdcount;
+}
+
+
+//
+// Description:  This function implements combined transactions.  Combined
+// transactions consist of combinations of reading and writing blocks of data.
+// Each transfer (i.e. a read or a write) is separated by a repeated start
+// condition.
+//
+static int iic_combined_transaction(struct i2c_adapter *i2c_adap, struct i2c_msg msgs[], int num) 
+{
+   int i;
+   struct i2c_msg *pmsg;
+   int ret;
+
+   DEB2(printk(KERN_DEBUG "Beginning combined transaction\n"));
+       for(i=0; i < num; i++) {
+               pmsg = &msgs[i];
+               if(pmsg->flags & I2C_M_RD) {
+
+                       // Last read or write segment needs to be terminated with a stop
+                       if(i < num-1) {
+                               DEB2(printk(KERN_DEBUG "This one is a read\n"));
+                       }
+                       else {
+                               DEB2(printk(KERN_DEBUG "Doing the last read\n"));
+                       }
+                       ret = iic_readbytes(i2c_adap, pmsg->buf, pmsg->len, (i < num-1) ? IIC_COMBINED_XFER : IIC_SINGLE_XFER);
+
+                       if (ret != pmsg->len) {
+                               DEB2(printk("i2c-algo-ppc405.o: fail: "
+                                                       "only read %d bytes.\n",ret));
+                               return i;
+                       }
+                       else {
+                               DEB2(printk("i2c-algo-ppc405.o: read %d bytes.\n",ret));
+                       }
+               }
+               else if(!(pmsg->flags & I2C_M_RD)) {
+
+                       // Last read or write segment needs to be terminated with a stop
+                       if(i < num-1) {
+                               DEB2(printk(KERN_DEBUG "This one is a write\n"));
+                       }
+                       else {
+                               DEB2(printk(KERN_DEBUG "Doing the last write\n"));
+                       }
+                       ret = iic_sendbytes(i2c_adap, pmsg->buf, pmsg->len, (i < num-1) ? IIC_COMBINED_XFER : IIC_SINGLE_XFER);
+
+                       if (ret != pmsg->len) {
+                               DEB2(printk("i2c-algo-ppc405.o: fail: "
+                                                       "only wrote %d bytes.\n",ret));
+                               return i;
+                       }
+                       else {
+                               DEB2(printk("i2c-algo-ppc405.o: wrote %d bytes.\n",ret));
+                       }
+               }
+       }
+ 
+       return num;
+}
+
+
+//
+// Description: Whenever we initiate a transaction, the first byte clocked
+// onto the bus after the start condition is the address (7 bit) of the
+// device we want to talk to.  This function manipulates the address specified
+// so that it makes sense to the hardware when written to the IIC peripheral.
+//
+// Note: 10 bit addresses are not supported in this driver, although they are
+// supported by the hardware.  This functionality needs to be implemented.
+//
+static inline int iic_doAddress(struct i2c_algo_iic_data *adap,
+                                struct i2c_msg *msg, int retries) 
+{
+       struct iic_regs *iic;
+       unsigned short flags = msg->flags;
+       unsigned char addr;
+       struct iic_ibm *adap_priv_data = adap->data;
+       iic = (struct iic_regs *) adap_priv_data->iic_base;
+
+//
+// The following segment for 10 bit addresses needs to be ported
+//
+/* Ten bit addresses not supported right now
+       if ( (flags & I2C_M_TEN)  ) { 
+               // a ten bit address
+               addr = 0xf0 | (( msg->addr >> 7) & 0x03);
+               DEB2(printk(KERN_DEBUG "addr0: %d\n",addr));
+               // try extended address code...
+               ret = try_address(adap, addr, retries);
+               if (ret!=1) {
+                       printk(KERN_ERR "iic_doAddress: died at extended address code.\n");
+                       return -EREMOTEIO;
+               }
+               // the remaining 8 bit address
+               iic_outb(adap,msg->addr & 0x7f);
+               // Status check comes here
+               if (ret != 1) {
+                       printk(KERN_ERR "iic_doAddress: died at 2nd address code.\n");
+                       return -EREMOTEIO;
+               }
+               if ( flags & I2C_M_RD ) {
+                       i2c_repstart(adap);
+                       // okay, now switch into reading mode
+                       addr |= 0x01;
+                       ret = try_address(adap, addr, retries);
+                       if (ret!=1) {
+                               printk(KERN_ERR "iic_doAddress: died at extended address code.\n");
+                               return -EREMOTEIO;
+                       }
+               }
+       } else ----------> // normal 7 bit address
+
+Ten bit addresses not supported yet */
+
+       addr = ( msg->addr << 1 );
+       if (flags & I2C_M_RD )
+               addr |= 1;
+       if (flags & I2C_M_REV_DIR_ADDR )
+               addr ^= 1;
+       //
+       // Write to the low slave address
+       //
+       iic_outb(adap, iic->lmadr, addr);
+       //
+       // Write zero to the high slave register since we are
+       // only using 7 bit addresses
+       //
+       iic_outb(adap, iic->hmadr, 0);
+
+       return 0;
+}
+
+
+//
+// Description: Prepares the controller for a transaction (clearing status
+// registers, data buffers, etc), and then calls either iic_readbytes or
+// iic_sendbytes to do the actual transaction.
+//
+static int iic_xfer(struct i2c_adapter *i2c_adap,
+                   struct i2c_msg msgs[], 
+                   int num)
+{
+       struct iic_regs *iic;
+       struct i2c_algo_iic_data *adap = i2c_adap->algo_data;
+       struct iic_ibm *adap_priv_data = adap->data;
+       struct i2c_msg *pmsg;
+       int i = 0;
+       int ret;
+       iic = (struct iic_regs *) adap_priv_data->iic_base;
+
+       pmsg = &msgs[i];
+
+       //
+       // Clear status register
+       //
+       DEB2(printk(KERN_DEBUG "iic_xfer: iic_xfer: Clearing status register\n"));
+       iic_outb(adap, iic->sts, 0x0a);
+
+       //
+       // Wait for any pending transfers to complete
+       //
+       DEB2(printk(KERN_DEBUG "iic_xfer: Waiting for any pending transfers to complete\n"));
+       while((ret = iic_inb(adap, iic->sts)) == 0x01) {
+               ;
+       }
+
+       //
+       // Flush master data buf
+       //
+       DEB2(printk(KERN_DEBUG "iic_xfer: Clearing master data buffer\n"));             
+       ret = iic_inb(adap, iic->mdcntl);
+       iic_outb(adap, iic->mdcntl, ret | 0x40);
+
+       //
+       // Load slave address
+       //
+       DEB2(printk(KERN_DEBUG "iic_xfer: Loading slave address\n"));
+       ret = iic_doAddress(adap, pmsg, i2c_adap->retries);
+
+        //
+        // Check to see if the bus is busy
+        //
+        ret = iic_inb(adap, iic->extsts);
+        // Mask off the irrelevent bits
+        ret = ret & 0x70;
+        // When the bus is free, the BCS bits in the EXTSTS register are 0b100
+        if(ret != 0x40) return IIC_ERR_LOST_ARB;
+
+       //
+       // Combined transaction (read and write)
+       //
+       if(num > 1) {
+           DEB2(printk(KERN_DEBUG "iic_xfer: Call combined transaction\n"));
+           ret = iic_combined_transaction(i2c_adap, msgs, num);
+        }
+       //
+       // Read only
+       //
+       else if((num == 1) && (pmsg->flags & I2C_M_RD)) {
+          //
+          // Tell device to begin reading data from the  master data 
+          //
+          DEB2(printk(KERN_DEBUG "iic_xfer: Call adapter's read\n"));
+          ret = iic_readbytes(i2c_adap, pmsg->buf, pmsg->len, IIC_SINGLE_XFER);
+       } 
+        //
+       // Write only
+       //
+       else if((num == 1 ) && (!(pmsg->flags & I2C_M_RD))) {
+          //
+          // Write data to master data buffers and tell our device
+          // to begin transmitting
+          //
+          DEB2(printk(KERN_DEBUG "iic_xfer: Call adapter's write\n"));
+          ret = iic_sendbytes(i2c_adap, pmsg->buf, pmsg->len, IIC_SINGLE_XFER);
+       }       
+
+       return ret;   
+}
+
+
+//
+// Description: Implements device specific ioctls.  Higher level ioctls can
+// be found in i2c-core.c and are typical of any i2c controller (specifying
+// slave address, timeouts, etc).  These ioctls take advantage of any hardware
+// features built into the controller for which this algorithm-adapter set
+// was written.  These ioctls allow you to take control of the data and clock
+// lines on the IBM PPC 405 IIC controller and set the either high or low,
+// similar to a GPIO pin.
+//
+static int algo_control(struct i2c_adapter *adapter, 
+       unsigned int cmd, unsigned long arg)
+{
+       struct iic_regs *iic;
+       struct i2c_algo_iic_data *adap = adapter->algo_data;
+       struct iic_ibm *adap_priv_data = adap->data;
+       int ret=0;
+       int lines;
+       iic = (struct iic_regs *) adap_priv_data->iic_base;
+
+       lines = iic_inb(adap, iic->directcntl);
+
+       if (cmd == IICO_I2C_SDAHIGH) {
+             lines = lines & 0x01;
+             if( lines ) lines = 0x04;
+             else lines = 0;
+             iic_outb(adap, iic->directcntl,(0x08|lines));
+       }
+       else if (cmd == IICO_I2C_SDALOW) {
+             lines = lines & 0x01;
+             if( lines ) lines = 0x04;
+              else lines = 0;
+              iic_outb(adap, iic->directcntl,(0x00|lines));
+       }
+       else if (cmd == IICO_I2C_SCLHIGH) {
+              lines = lines & 0x02;
+              if( lines ) lines = 0x08;
+              else lines = 0;
+              iic_outb(adap, iic->directcntl,(0x04|lines));
+       }
+       else if (cmd == IICO_I2C_SCLLOW) {
+              lines = lines & 0x02;
+             if( lines ) lines = 0x08;
+              else lines = 0;
+              iic_outb(adap, iic->directcntl,(0x00|lines));
+       }
+       else if (cmd == IICO_I2C_LINEREAD) {
+             ret = lines;
+       }
+       return ret;
+}
+
+
+static u32 iic_func(struct i2c_adapter *adap)
+{
+       return I2C_FUNC_SMBUS_EMUL | I2C_FUNC_10BIT_ADDR | 
+              I2C_FUNC_PROTOCOL_MANGLING; 
+}
+
+
+/* -----exported algorithm data: ------------------------------------- */
+
+static struct i2c_algorithm iic_algo = {
+       .owner          = THIS_MODULE,
+       .name           = "IBM on-chip IIC algorithm",
+       .id             = I2C_ALGO_OCP,
+       .master_xfer    = iic_xfer,
+       .algo_control   = algo_control,
+       .functionality  = iic_func,
+};
+
+/* 
+ * registering functions to load algorithms at runtime 
+ */
+
+
+//
+// Description: Register bus structure
+//
+int i2c_ocp_add_bus(struct i2c_adapter *adap)
+{
+       struct i2c_algo_iic_data *iic_adap = adap->algo_data;
+
+       DEB2(printk(KERN_DEBUG "i2c-algo-iic.o: hw routines for %s registered.\n",
+                   adap->name));
+
+       /* register new adapter to i2c module... */
+
+       adap->id |= iic_algo.id;
+       adap->algo = &iic_algo;
+
+       adap->timeout = 100;    /* default values, should       */
+       adap->retries = 3;              /* be replaced by defines       */
+
+       iic_init(iic_adap);
+       i2c_add_adapter(adap);
+       return 0;
+}
+
+
+//
+// Done
+//
+int i2c_ocp_del_bus(struct i2c_adapter *adap)
+{
+       return i2c_del_adapter(adap);
+}
+
+
+EXPORT_SYMBOL(i2c_ocp_add_bus);
+EXPORT_SYMBOL(i2c_ocp_del_bus);
+
+//
+// The MODULE_* macros resolve to nothing if MODULES is not defined
+// when this file is compiled.
+//
+MODULE_AUTHOR("MontaVista Software <www.mvista.com>");
+MODULE_DESCRIPTION("PPC 405 iic algorithm");
+MODULE_LICENSE("GPL");
+
+MODULE_PARM(i2c_debug,"i");
+
+MODULE_PARM_DESC(i2c_debug,
+        "debug level - 0 off; 1 normal; 2,3 more verbose; 9 iic-protocol");
+
diff -urN linux-2.4.24.org/drivers/i2c/i2c-algo-pcf.c linux-2.4.24/drivers/i2c/i2c-algo-pcf.c
--- linux-2.4.24.org/drivers/i2c/i2c-algo-pcf.c 2004-02-04 22:33:47.589988460 +0100
+++ linux-2.4.24/drivers/i2c/i2c-algo-pcf.c     2004-02-04 22:36:36.656830731 +0100
@@ -32,14 +32,11 @@
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/init.h>
-#include <asm/uaccess.h>
-#include <linux/ioport.h>
 #include <linux/errno.h>
 #include <linux/sched.h>
-
 #include <linux/i2c.h>
 #include <linux/i2c-algo-pcf.h>
-#include "i2c-pcf8584.h"
+
 
 /* ----- global defines ----------------------------------------------- */
 #define DEB(x) if (i2c_debug>=1) x
@@ -52,7 +49,6 @@
 /* module parameters:
  */
 static int i2c_debug=0;
-static int pcf_scan=0; /* have a look at what's hanging 'round         */
 
 /* --- setting states on the bus with the right timing: ---------------        */
 
@@ -149,8 +145,7 @@
        set_pcf(adap, 1, I2C_PCF_PIN);
        /* check to see S1 now used as R/W ctrl -
           PCF8584 does that when ESO is zero */
-       /* PCF also resets PIN bit */
-       if ((temp = get_pcf(adap, 1)) != (0)) {
+       if (((temp = get_pcf(adap, 1)) & 0x7f) != (0)) {
                DEB2(printk(KERN_ERR "i2c-algo-pcf.o: PCF detection failed -- can't select S0 (0x%02x).\n", temp));
                return -ENXIO; /* definetly not PCF8584 */
        }
@@ -166,7 +161,7 @@
        /* S1=0xA0, next byte in S2                                     */
        set_pcf(adap, 1, I2C_PCF_PIN | I2C_PCF_ES1);
        /* check to see S2 now selected */
-       if ((temp = get_pcf(adap, 1)) != I2C_PCF_ES1) {
+       if (((temp = get_pcf(adap, 1)) & 0x7f) != I2C_PCF_ES1) {
                DEB2(printk(KERN_ERR "i2c-algo-pcf.o: PCF detection failed -- can't select S2 (0x%02x).\n", temp));
                return -ENXIO;
        }
@@ -427,12 +422,6 @@
        return (i);
 }
 
-static int algo_control(struct i2c_adapter *adapter, 
-       unsigned int cmd, unsigned long arg)
-{
-       return 0;
-}
-
 static u32 pcf_func(struct i2c_adapter *adap)
 {
        return I2C_FUNC_SMBUS_EMUL | I2C_FUNC_10BIT_ADDR | 
@@ -442,14 +431,11 @@
 /* -----exported algorithm data: ------------------------------------- */
 
 static struct i2c_algorithm pcf_algo = {
-       "PCF8584 algorithm",
-       I2C_ALGO_PCF,
-       pcf_xfer,
-       NULL,
-       NULL,                           /* slave_xmit           */
-       NULL,                           /* slave_recv           */
-       algo_control,                   /* ioctl                */
-       pcf_func,                       /* functionality        */
+       .owner          = THIS_MODULE,
+       .name           = "PCF8584 algorithm",
+       .id             = I2C_ALGO_PCF,
+       .master_xfer    = pcf_xfer,
+       .functionality  = pcf_func,
 };
 
 /* 
@@ -457,7 +443,7 @@
  */
 int i2c_pcf_add_bus(struct i2c_adapter *adap)
 {
-       int i, status;
+       int i;
        struct i2c_algo_pcf_data *pcf_adap = adap->algo_data;
 
        DEB2(printk(KERN_DEBUG "i2c-algo-pcf.o: hw routines for %s registered.\n",
@@ -475,81 +461,23 @@
                return i;
        }
 
-#ifdef MODULE
-       MOD_INC_USE_COUNT;
-#endif
-
        i2c_add_adapter(adap);
-
-       /* scan bus */
-       if (pcf_scan) {
-               printk(KERN_INFO " i2c-algo-pcf.o: scanning bus %s.\n",
-                      adap->name);
-               for (i = 0x00; i < 0xff; i+=2) {
-                       if (wait_for_bb(pcf_adap)) {
-                       printk(KERN_INFO " i2c-algo-pcf.o: scanning bus %s - TIMEOUTed.\n",
-                          adap->name);
-                           break;
-                       }
-                       i2c_outb(pcf_adap, i);
-                       i2c_start(pcf_adap);
-                       if ((wait_for_pin(pcf_adap, &status) >= 0) && 
-                           ((status & I2C_PCF_LRB) == 0)) { 
-                               printk("(%02x)",i>>1); 
-                       } else {
-                               printk("."); 
-                       }
-                       i2c_stop(pcf_adap);
-                       udelay(pcf_adap->udelay);
-               }
-               printk("\n");
-       }
        return 0;
 }
 
 
 int i2c_pcf_del_bus(struct i2c_adapter *adap)
 {
-       int res;
-       if ((res = i2c_del_adapter(adap)) < 0)
-               return res;
-       DEB2(printk("i2c-algo-pcf.o: adapter unregistered: %s\n",adap->name));
-
-#ifdef MODULE
-       MOD_DEC_USE_COUNT;
-#endif
-       return 0;
-}
-
-int __init i2c_algo_pcf_init (void)
-{
-       printk("i2c-algo-pcf.o: i2c pcf8584 algorithm module\n");
-       return 0;
+       return i2c_del_adapter(adap);
 }
 
-
 EXPORT_SYMBOL(i2c_pcf_add_bus);
 EXPORT_SYMBOL(i2c_pcf_del_bus);
 
-#ifdef MODULE
 MODULE_AUTHOR("Hans Berglund <hb@spacetec.no>");
 MODULE_DESCRIPTION("I2C-Bus PCF8584 algorithm");
 MODULE_LICENSE("GPL");
 
-MODULE_PARM(pcf_scan, "i");
 MODULE_PARM(i2c_debug,"i");
-
-MODULE_PARM_DESC(pcf_scan, "Scan for active chips on the bus");
 MODULE_PARM_DESC(i2c_debug,
         "debug level - 0 off; 1 normal; 2,3 more verbose; 9 pcf-protocol");
-
-
-int init_module(void) 
-{
-       return i2c_algo_pcf_init();
-}
-
-void cleanup_module(void) 
-{
-}
-#endif
diff -urN linux-2.4.24.org/drivers/i2c/i2c-core.c linux-2.4.24/drivers/i2c/i2c-core.c
--- linux-2.4.24.org/drivers/i2c/i2c-core.c     2004-02-04 22:33:47.354037526 +0100
+++ linux-2.4.24/drivers/i2c/i2c-core.c 2004-02-04 22:36:36.665828860 +0100
@@ -18,56 +18,33 @@
 /* ------------------------------------------------------------------------- */
 
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi>.
-   All SMBus-related things are written by Frodo Looijaard <frodol@dds.nl> */
+   All SMBus-related things are written by Frodo Looijaard <frodol@dds.nl>
+   SMBus 2.0 support by Mark Studebaker <mdsxyz123@yahoo.com>                */
 
-/* $Id$ */
+/* i2c-core.c,v 1.91.2.2 2003/01/21 10:00:19 kmalkki Exp */
 
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/slab.h>
 #include <linux/proc_fs.h>
-#include <linux/config.h>
-
-#include <linux/i2c.h>
-
-/* ----- compatibility stuff ----------------------------------------------- */
-
 #include <linux/init.h>
-
+#include <linux/i2c.h>
 #include <asm/uaccess.h>
 
 /* ----- global defines ---------------------------------------------------- */
 
-/* exclusive access to the bus */
-#define I2C_LOCK(adap) down(&adap->lock)
-#define I2C_UNLOCK(adap) up(&adap->lock) 
-
-#define ADAP_LOCK()    down(&adap_lock)
-#define ADAP_UNLOCK()  up(&adap_lock)
-
-#define DRV_LOCK()     down(&driver_lock)
-#define DRV_UNLOCK()   up(&driver_lock)
-
 #define DEB(x) if (i2c_debug>=1) x;
 #define DEB2(x) if (i2c_debug>=2) x;
 
 /* ----- global variables -------------------------------------------------- */
 
-/**** lock for writing to global variables: the adapter & driver list */
-struct semaphore adap_lock;
-struct semaphore driver_lock;
-
-/**** adapter list */
+DECLARE_MUTEX(core_lists);
 static struct i2c_adapter *adapters[I2C_ADAP_MAX];
-static int adap_count;
-
-/**** drivers list */
 static struct i2c_driver *drivers[I2C_DRIVER_MAX];
-static int driver_count;
 
 /**** debug level */
-static int i2c_debug=1;
+static int i2c_debug;
 
 /* ---------------------------------------------------
  * /proc entry declarations
@@ -75,10 +52,6 @@
  */
 
 #ifdef CONFIG_PROC_FS
-
-static int i2cproc_init(void);
-static int i2cproc_cleanup(void);
-
 static ssize_t i2cproc_bus_read(struct file * file, char * buf,size_t count, 
                                 loff_t *ppos);
 static int read_bus_i2c(char *buf, char **start, off_t offset, int len,
@@ -87,15 +60,11 @@
 /* To implement the dynamic /proc/bus/i2c-? files, we need our own 
    implementation of the read hook */
 static struct file_operations i2cproc_operations = {
-       read:           i2cproc_bus_read,
+       .read           = i2cproc_bus_read,
 };
 
-static int i2cproc_initialized = 0;
-
-#else /* undef CONFIG_PROC_FS */
-
-#define i2cproc_init() 0
-#define i2cproc_cleanup() 0
+static int i2cproc_register(struct i2c_adapter *adap, int bus);
+static void i2cproc_remove(int bus);
 
 #endif /* CONFIG_PROC_FS */
 
@@ -112,9 +81,9 @@
  */
 int i2c_add_adapter(struct i2c_adapter *adap)
 {
-       int i,j,res;
+       int i,j,res = 0;
 
-       ADAP_LOCK();
+       down(&core_lists);
        for (i = 0; i < I2C_ADAP_MAX; i++)
                if (NULL == adapters[i])
                        break;
@@ -125,68 +94,39 @@
                res = -ENOMEM;
                goto ERROR0;
        }
+       
+#ifdef CONFIG_PROC_FS
+       res = i2cproc_register(adap, i);
+       if (res<0)
+           goto ERROR0;
+#endif /* def CONFIG_PROC_FS */
 
        adapters[i] = adap;
-       adap_count++;
-       ADAP_UNLOCK();
        
        /* init data types */
-       init_MUTEX(&adap->lock);
-
-#ifdef CONFIG_PROC_FS
-
-       if (i2cproc_initialized) {
-               char name[8];
-               struct proc_dir_entry *proc_entry;
-
-               sprintf(name,"i2c-%d", i);
-
-               proc_entry = create_proc_entry(name,0,proc_bus);
-               if (! proc_entry) {
-                       printk("i2c-core.o: Could not create /proc/bus/%s\n",
-                              name);
-                       res = -ENOENT;
-                       goto ERROR1;
-               }
-
-               proc_entry->proc_fops = &i2cproc_operations;
-               proc_entry->owner = THIS_MODULE;
-               adap->inode = proc_entry->low_ino;
-       }
-
-#endif /* def CONFIG_PROC_FS */
+       init_MUTEX(&adap->bus);
+       init_MUTEX(&adap->list);
 
        /* inform drivers of new adapters */
-       DRV_LOCK();     
        for (j=0;j<I2C_DRIVER_MAX;j++)
                if (drivers[j]!=NULL && 
                    (drivers[j]->flags&(I2C_DF_NOTIFY|I2C_DF_DUMMY)))
                        /* We ignore the return code; if it fails, too bad */
                        drivers[j]->attach_adapter(adap);
-       DRV_UNLOCK();
        
        DEB(printk(KERN_DEBUG "i2c-core.o: adapter %s registered as adapter %d.\n",
                   adap->name,i));
-
-       return 0;       
-
-
-ERROR1:
-       ADAP_LOCK();
-       adapters[i] = NULL;
-       adap_count--;
 ERROR0:
-       ADAP_UNLOCK();
+       up(&core_lists);
        return res;
 }
 
 
 int i2c_del_adapter(struct i2c_adapter *adap)
 {
-       int i,j,res;
-
-       ADAP_LOCK();
+       int i,j,res = 0;
 
+       down(&core_lists);
        for (i = 0; i < I2C_ADAP_MAX; i++)
                if (adap == adapters[i])
                        break;
@@ -202,17 +142,14 @@
         * *detach* it! Of course, each dummy driver should know about
         * this or hell will break loose...
         */
-       DRV_LOCK();
        for (j = 0; j < I2C_DRIVER_MAX; j++) 
                if (drivers[j] && (drivers[j]->flags & I2C_DF_DUMMY))
                        if ((res = drivers[j]->attach_adapter(adap))) {
                                printk(KERN_WARNING "i2c-core.o: can't detach adapter %s "
                                       "while detaching driver %s: driver not "
                                       "detached!",adap->name,drivers[j]->name);
-                               goto ERROR1;    
+                               goto ERROR0;
                        }
-       DRV_UNLOCK();
-
 
        /* detach any active clients. This must be done first, because
         * it can fail; in which case we give upp. */
@@ -231,26 +168,15 @@
                                goto ERROR0;
                        }
        }
+
 #ifdef CONFIG_PROC_FS
-       if (i2cproc_initialized) {
-               char name[8];
-               sprintf(name,"i2c-%d", i);
-               remove_proc_entry(name,proc_bus);
-       }
+       i2cproc_remove(i);
 #endif /* def CONFIG_PROC_FS */
 
        adapters[i] = NULL;
-       adap_count--;
-       
-       ADAP_UNLOCK();  
        DEB(printk(KERN_DEBUG "i2c-core.o: adapter unregistered: %s\n",adap->name));
-       return 0;
-
 ERROR0:
-       ADAP_UNLOCK();
-       return res;
-ERROR1:
-       DRV_UNLOCK();
+       up(&core_lists);
        return res;
 }
 
@@ -264,7 +190,8 @@
 int i2c_add_driver(struct i2c_driver *driver)
 {
        int i;
-       DRV_LOCK();
+
+       down(&core_lists);
        for (i = 0; i < I2C_DRIVER_MAX; i++)
                if (NULL == drivers[i])
                        break;
@@ -273,19 +200,12 @@
                       " i2c-core.o: register_driver(%s) "
                       "- enlarge I2C_DRIVER_MAX.\n",
                        driver->name);
-               DRV_UNLOCK();
+               up(&core_lists);
                return -ENOMEM;
        }
-
        drivers[i] = driver;
-       driver_count++;
-       
-       DRV_UNLOCK();   /* driver was successfully added */
-       
        DEB(printk(KERN_DEBUG "i2c-core.o: driver %s registered.\n",driver->name));
        
-       ADAP_LOCK();
-
        /* now look for instances of driver on our adapters
         */
        if (driver->flags& (I2C_DF_NOTIFY|I2C_DF_DUMMY)) {
@@ -294,15 +214,15 @@
                                /* Ignore errors */
                                driver->attach_adapter(adapters[i]);
        }
-       ADAP_UNLOCK();
+       up(&core_lists);
        return 0;
 }
 
 int i2c_del_driver(struct i2c_driver *driver)
 {
-       int i,j,k,res;
+       int i,j,k,res = 0;
 
-       DRV_LOCK();
+       down(&core_lists);
        for (i = 0; i < I2C_DRIVER_MAX; i++)
                if (driver == drivers[i])
                        break;
@@ -310,7 +230,7 @@
                printk(KERN_WARNING " i2c-core.o: unregister_driver: "
                                    "[%s] not found\n",
                        driver->name);
-               DRV_UNLOCK();
+               up(&core_lists);
                return -ENODEV;
        }
        /* Have a look at each adapter, if clients of this driver are still
@@ -322,7 +242,6 @@
         * invalid operation might (will!) result, when using stale client
         * pointers.
         */
-       ADAP_LOCK(); /* should be moved inside the if statement... */
        for (k=0;k<I2C_ADAP_MAX;k++) {
                struct i2c_adapter *adap = adapters[k];
                if (adap == NULL) /* skip empty entries. */
@@ -341,8 +260,7 @@
                                       "not be detached properly; driver "
                                       "not unloaded!",driver->name,
                                       adap->name);
-                               ADAP_UNLOCK();
-                               return res;
+                               goto ERROR0;
                        }
                } else {
                        for (j=0;j<I2C_CLIENT_MAX;j++) { 
@@ -359,37 +277,47 @@
                                                       "unregistering driver "
                                                       "`%s', the client at "
                                                       "address %02x of "
-                                                      "adapter `%s' could not"
-                                                      "be detached; driver"
+                                                      "adapter `%s' could not "
+                                                      "be detached; driver "
                                                       "not unloaded!",
                                                       driver->name,
                                                       client->addr,
                                                       adap->name);
-                                               ADAP_UNLOCK();
-                                               return res;
+                                               goto ERROR0;
                                        }
                                }
                        }
                }
        }
-       ADAP_UNLOCK();
        drivers[i] = NULL;
-       driver_count--;
-       DRV_UNLOCK();
-       
        DEB(printk(KERN_DEBUG "i2c-core.o: driver unregistered: %s\n",driver->name));
-       return 0;
+
+ERROR0:
+       up(&core_lists);
+       return res;
 }
 
-int i2c_check_addr (struct i2c_adapter *adapter, int addr)
+static int __i2c_check_addr (struct i2c_adapter *adapter, int addr)
 {
        int i;
        for (i = 0; i < I2C_CLIENT_MAX ; i++) 
                if (adapter->clients[i] && (adapter->clients[i]->addr == addr))
                        return -EBUSY;
+
        return 0;
 }
 
+int i2c_check_addr (struct i2c_adapter *adapter, int addr)
+{
+       int rval;
+
+       down(&adapter->list);
+       rval = __i2c_check_addr(adapter, addr);
+       up(&adapter->list);
+
+       return rval;
+}
+
 int i2c_attach_client(struct i2c_client *client)
 {
        struct i2c_adapter *adapter = client->adapter;
@@ -398,6 +326,7 @@
        if (i2c_check_addr(client->adapter,client->addr))
                return -EBUSY;
 
+       down(&adapter->list);
        for (i = 0; i < I2C_CLIENT_MAX; i++)
                if (NULL == adapter->clients[i])
                        break;
@@ -405,11 +334,11 @@
                printk(KERN_WARNING 
                       " i2c-core.o: attach_client(%s) - enlarge I2C_CLIENT_MAX.\n",
                        client->name);
+               up(&adapter->list);
                return -ENOMEM;
        }
-
        adapter->clients[i] = client;
-       adapter->client_count++;
+       up(&adapter->list);
        
        if (adapter->client_register) 
                if (adapter->client_register(client)) 
@@ -431,16 +360,6 @@
        struct i2c_adapter *adapter = client->adapter;
        int i,res;
 
-       for (i = 0; i < I2C_CLIENT_MAX; i++)
-               if (client == adapter->clients[i])
-                       break;
-       if (I2C_CLIENT_MAX == i) {
-               printk(KERN_WARNING " i2c-core.o: unregister_client "
-                                   "[%s] not found\n",
-                       client->name);
-               return -ENODEV;
-       }
-       
        if( (client->flags & I2C_CLIENT_ALLOW_USE) && 
            (client->usage_count>0))
                return -EBUSY;
@@ -452,33 +371,41 @@
                        return res;
                }
 
+       down(&adapter->list);
+       for (i = 0; i < I2C_CLIENT_MAX; i++)
+               if (client == adapter->clients[i])
+                       break;
+       if (I2C_CLIENT_MAX == i) {
+               printk(KERN_WARNING " i2c-core.o: unregister_client "
+                                   "[%s] not found\n",
+                       client->name);
+               up(&adapter->list);
+               return -ENODEV;
+       }
        adapter->clients[i] = NULL;
-       adapter->client_count--;
+       up(&adapter->list);
 
        DEB(printk(KERN_DEBUG "i2c-core.o: client [%s] unregistered.\n",client->name));
        return 0;
 }
 
-void i2c_inc_use_client(struct i2c_client *client)
+static void i2c_inc_use_client(struct i2c_client *client)
 {
-
-       if (client->driver->inc_use != NULL)
-               client->driver->inc_use(client);
-
-       if (client->adapter->inc_use != NULL)
-               client->adapter->inc_use(client->adapter);
+       if(client->driver->owner)
+               __MOD_INC_USE_COUNT(client->driver->owner);
+       if(client->adapter->owner)
+               __MOD_INC_USE_COUNT(client->adapter->owner);
 }
 
-void i2c_dec_use_client(struct i2c_client *client)
+static void i2c_dec_use_client(struct i2c_client *client)
 {
-       
-       if (client->driver->dec_use != NULL)
-               client->driver->dec_use(client);
-
-       if (client->adapter->dec_use != NULL)
-               client->adapter->dec_use(client->adapter);
+       if(client->driver->owner)
+               __MOD_DEC_USE_COUNT(client->driver->owner);
+       if(client->adapter->owner)
+               __MOD_DEC_USE_COUNT(client->adapter->owner);
 }
 
+#if 0 /* just forget about this for now --km */
 struct i2c_client *i2c_get_client(int driver_id, int adapter_id, 
                                        struct i2c_client *prev)
 {
@@ -545,18 +472,17 @@
 
        return 0;
 }
+#endif
 
 int i2c_use_client(struct i2c_client *client)
 {
-       if(client->flags & I2C_CLIENT_ALLOW_USE) {
-               if (client->flags & I2C_CLIENT_ALLOW_MULTIPLE_USE) 
+       if (client->flags & I2C_CLIENT_ALLOW_USE) {
+               if (client->flags & I2C_CLIENT_ALLOW_MULTIPLE_USE)
+                       client->usage_count++;
+               else if (client->usage_count > 0) 
+                       return -EBUSY;
+               else 
                        client->usage_count++;
-               else {
-                       if(client->usage_count > 0) 
-                               return -EBUSY;
-                        else 
-                               client->usage_count++;
-               }
        }
 
        i2c_inc_use_client(client);
@@ -589,12 +515,13 @@
 #ifdef CONFIG_PROC_FS
 
 /* This function generates the output for /proc/bus/i2c */
-int read_bus_i2c(char *buf, char **start, off_t offset, int len, int *eof, 
+static int read_bus_i2c(char *buf, char **start, off_t offset, int len, int *eof, 
                  void *private)
 {
        int i;
        int nr = 0;
        /* Note that it is safe to write a `little' beyond len. Yes, really. */
+       down(&core_lists);
        for (i = 0; (i < I2C_ADAP_MAX) && (nr < len); i++)
                if (adapters[i]) {
                        nr += sprintf(buf+nr, "i2c-%d\t", i);
@@ -611,6 +538,7 @@
                                      adapters[i]->name,
                                      adapters[i]->algo->name);
                }
+       up(&core_lists);
        return nr;
 }
 
@@ -621,98 +549,125 @@
        struct inode * inode = file->f_dentry->d_inode;
        char *kbuf;
        struct i2c_client *client;
+       struct i2c_adapter *adap;
        int i,j,k,order_nr,len=0;
        size_t len_total;
        int order[I2C_CLIENT_MAX];
+#define OUTPUT_LENGTH_PER_LINE 70
 
-       if (count > 4000)
-               return -EINVAL; 
        len_total = file->f_pos + count;
-       /* Too bad if this gets longer (unlikely) */
-       if (len_total > 4000)
-               len_total = 4000;
-       for (i = 0; i < I2C_ADAP_MAX; i++)
-               if (adapters[i]->inode == inode->i_ino) {
-               /* We need a bit of slack in the kernel buffer; this makes the
-                  sprintf safe. */
-                       if (! (kbuf = kmalloc(count + 80,GFP_KERNEL)))
-                               return -ENOMEM;
-                       /* Order will hold the indexes of the clients
-                          sorted by address */
-                       order_nr=0;
-                       for (j = 0; j < I2C_CLIENT_MAX; j++) {
-                               if ((client = adapters[i]->clients[j]) && 
-                                   (client->driver->id != I2C_DRIVERID_I2CDEV))  {
-                                       for(k = order_nr; 
-                                           (k > 0) && 
-                                           adapters[i]->clients[order[k-1]]->
-                                                    addr > client->addr; 
-                                           k--)
-                                               order[k] = order[k-1];
-                                       order[k] = j;
-                                       order_nr++;
-                               }
-                       }
-
-
-                       for (j = 0; (j < order_nr) && (len < len_total); j++) {
-                               client = adapters[i]->clients[order[j]];
-                               len += sprintf(kbuf+len,"%02x\t%-32s\t%-32s\n",
-                                             client->addr,
-                                             client->name,
-                                             client->driver->name);
-                       }
-                       len = len - file->f_pos;
-                       if (len > count)
-                               len = count;
-                       if (len < 0) 
-                               len = 0;
-                       if (copy_to_user (buf,kbuf+file->f_pos, len)) {
-                               kfree(kbuf);
-                               return -EFAULT;
-                       }
-                       file->f_pos += len;
-                       kfree(kbuf);
-                       return len;
-               }
-       return -ENOENT;
+       if (len_total > (I2C_CLIENT_MAX * OUTPUT_LENGTH_PER_LINE) )
+               /* adjust to maximum file size */
+               len_total = (I2C_CLIENT_MAX * OUTPUT_LENGTH_PER_LINE);
+
+       down(&core_lists);
+       /* adap = file->private_data; ?? --km */
+       for (i = 0; i < I2C_ADAP_MAX; i++) {
+           adap = adapters[i];
+           if (adap && (adap->inode == inode->i_ino))
+               break;
+       }
+       if ( I2C_ADAP_MAX == i ) {
+           up(&core_lists);
+           return -ENOENT;
+       }
+
+       /* We need a bit of slack in the kernel buffer; this makes the
+          sprintf safe. */
+       if (! (kbuf = kmalloc(len_total +
+                             OUTPUT_LENGTH_PER_LINE,
+                             GFP_KERNEL)))
+           return -ENOMEM;
+
+       /* Order will hold the indexes of the clients
+          sorted by address */
+       order_nr=0;
+       down(&adap->list);
+       for (j = 0; j < I2C_CLIENT_MAX; j++) {
+           if ((client = adap->clients[j]) && 
+               (client->driver->id != I2C_DRIVERID_I2CDEV))  {
+               for(k = order_nr; 
+                   (k > 0) && 
+                       adap->clients[order[k-1]]->
+                       addr > client->addr; 
+                   k--)
+                   order[k] = order[k-1];
+               order[k] = j;
+               order_nr++;
+           }
+       }
+
+
+       for (j = 0; (j < order_nr) && (len < len_total); j++) {
+           client = adap->clients[order[j]];
+           len += sprintf(kbuf+len,"%02x\t%-32s\t%-32s\n",
+                          client->addr,
+                          client->name,
+                          client->driver->name);
+       }
+       up(&adap->list);
+       up(&core_lists);
+       
+       len = len - file->f_pos;
+       if (len > count)
+           len = count;
+       if (len < 0) 
+           len = 0;
+       if (copy_to_user (buf,kbuf+file->f_pos, len)) {
+           kfree(kbuf);
+           return -EFAULT;
+       }
+       file->f_pos += len;
+       kfree(kbuf);
+       return len;
+}
+
+static int i2cproc_register(struct i2c_adapter *adap, int bus)
+{
+       char name[8];
+       struct proc_dir_entry *proc_entry;
+
+       sprintf(name,"i2c-%d", bus);
+       proc_entry = create_proc_entry(name,0,proc_bus);
+       if (! proc_entry) {
+               printk(KERN_ERR "i2c-core.o: Could not create /proc/bus/%s\n",
+                      name);
+               return -ENOENT;
+       }
+           
+       proc_entry->proc_fops = &i2cproc_operations;
+       proc_entry->owner = adap->owner;
+       adap->inode = proc_entry->low_ino;
+       return 0;
 }
 
-int i2cproc_init(void)
+static void i2cproc_remove(int bus)
 {
+       char name[8];
+       sprintf(name,"i2c-%d", bus);
+       remove_proc_entry(name, proc_bus);
+}
 
+static int __init i2cproc_init(void)
+{
        struct proc_dir_entry *proc_bus_i2c;
 
-       i2cproc_initialized = 0;
-
-       if (! proc_bus) {
-               printk("i2c-core.o: /proc/bus/ does not exist");
-               i2cproc_cleanup();
-               return -ENOENT;
-       } 
        proc_bus_i2c = create_proc_entry("i2c",0,proc_bus);
        if (!proc_bus_i2c) {
                printk(KERN_ERR "i2c-core.o: Could not create /proc/bus/i2c");
-               i2cproc_cleanup();
                return -ENOENT;
        }
+
        proc_bus_i2c->read_proc = &read_bus_i2c;
        proc_bus_i2c->owner = THIS_MODULE;
-       i2cproc_initialized += 2;
        return 0;
 }
 
-int i2cproc_cleanup(void)
+static void __exit i2cproc_cleanup(void)
 {
-
-       if (i2cproc_initialized >= 1) {
-               remove_proc_entry("i2c",proc_bus);
-               i2cproc_initialized -= 2;
-       }
-       return 0;
+       remove_proc_entry("i2c",proc_bus);
 }
 
-
 #endif /* def CONFIG_PROC_FS */
 
 /* ----------------------------------------------------
@@ -728,9 +683,9 @@
                DEB2(printk(KERN_DEBUG "i2c-core.o: master_xfer: %s with %d msgs.\n",
                            adap->name,num));
 
-               I2C_LOCK(adap);
+               down(&adap->bus);
                ret = adap->algo->master_xfer(adap,msgs,num);
-               I2C_UNLOCK(adap);
+               up(&adap->bus);
 
                return ret;
        } else {
@@ -755,9 +710,9 @@
                DEB2(printk(KERN_DEBUG "i2c-core.o: master_send: writing %d bytes on %s.\n",
                        count,client->adapter->name));
        
-               I2C_LOCK(adap);
+               down(&adap->bus);
                ret = adap->algo->master_xfer(adap,&msg,1);
-               I2C_UNLOCK(adap);
+               up(&adap->bus);
 
                /* if everything went ok (i.e. 1 msg transmitted), return #bytes
                 * transmitted, else error code.
@@ -785,9 +740,9 @@
                DEB2(printk(KERN_DEBUG "i2c-core.o: master_recv: reading %d bytes on %s.\n",
                        count,client->adapter->name));
        
-               I2C_LOCK(adap);
+               down(&adap->bus);
                ret = adap->algo->master_xfer(adap,&msg,1);
-               I2C_UNLOCK(adap);
+               up(&adap->bus);
        
                DEB2(printk(KERN_DEBUG "i2c-core.o: master_recv: return:%d (count:%d, addr:0x%02x)\n",
                        ret, count, client->addr));
@@ -965,6 +920,123 @@
 
 /* The SMBus parts */
 
+#define POLY    (0x1070U << 3) 
+static u8
+crc8(u16 data)
+{
+       int i;
+  
+       for(i = 0; i < 8; i++) {
+               if (data & 0x8000) 
+                       data = data ^ POLY;
+               data = data << 1;
+       }
+       return (u8)(data >> 8);
+}
+
+/* CRC over count bytes in the first array plus the bytes in the rest
+   array if it is non-null. rest[0] is the (length of rest) - 1
+   and is included. */
+u8 i2c_smbus_partial_pec(u8 crc, int count, u8 *first, u8 *rest)
+{
+       int i;
+
+       for(i = 0; i < count; i++)
+               crc = crc8((crc ^ first[i]) << 8);
+       if(rest != NULL)
+               for(i = 0; i <= rest[0]; i++)
+                       crc = crc8((crc ^ rest[i]) << 8);
+       return crc;
+}
+
+u8 i2c_smbus_pec(int count, u8 *first, u8 *rest)
+{
+       return i2c_smbus_partial_pec(0, count, first, rest);
+}
+
+/* Returns new "size" (transaction type)
+   Note that we convert byte to byte_data and byte_data to word_data
+   rather than invent new xxx_PEC transactions. */
+int i2c_smbus_add_pec(u16 addr, u8 command, int size,
+                      union i2c_smbus_data *data)
+{
+       u8 buf[3];
+
+       buf[0] = addr << 1;
+       buf[1] = command;
+       switch(size) {
+               case I2C_SMBUS_BYTE:
+                       data->byte = i2c_smbus_pec(2, buf, NULL);
+                       size = I2C_SMBUS_BYTE_DATA;
+                       break;
+               case I2C_SMBUS_BYTE_DATA:
+                       buf[2] = data->byte;
+                       data->word = buf[2] ||
+                                   (i2c_smbus_pec(3, buf, NULL) << 8);
+                       size = I2C_SMBUS_WORD_DATA;
+                       break;
+               case I2C_SMBUS_WORD_DATA:
+                       /* unsupported */
+                       break;
+               case I2C_SMBUS_BLOCK_DATA:
+                       data->block[data->block[0] + 1] =
+                                    i2c_smbus_pec(2, buf, data->block);
+                       size = I2C_SMBUS_BLOCK_DATA_PEC;
+                       break;
+       }
+       return size;    
+}
+
+int i2c_smbus_check_pec(u16 addr, u8 command, int size, u8 partial,
+                        union i2c_smbus_data *data)
+{
+       u8 buf[3], rpec, cpec;
+
+       buf[1] = command;
+       switch(size) {
+               case I2C_SMBUS_BYTE_DATA:
+                       buf[0] = (addr << 1) | 1;
+                       cpec = i2c_smbus_pec(2, buf, NULL);
+                       rpec = data->byte;
+                       break;
+               case I2C_SMBUS_WORD_DATA:
+                       buf[0] = (addr << 1) | 1;
+                       buf[2] = data->word & 0xff;
+                       cpec = i2c_smbus_pec(3, buf, NULL);
+                       rpec = data->word >> 8;
+                       break;
+               case I2C_SMBUS_WORD_DATA_PEC:
+                       /* unsupported */
+                       cpec = rpec = 0;
+                       break;
+               case I2C_SMBUS_PROC_CALL_PEC:
+                       /* unsupported */
+                       cpec = rpec = 0;
+                       break;
+               case I2C_SMBUS_BLOCK_DATA_PEC:
+                       buf[0] = (addr << 1);
+                       buf[2] = (addr << 1) | 1;
+                       cpec = i2c_smbus_pec(3, buf, data->block);
+                       rpec = data->block[data->block[0] + 1];
+                       break;
+               case I2C_SMBUS_BLOCK_PROC_CALL_PEC:
+                       buf[0] = (addr << 1) | 1;
+                       rpec = i2c_smbus_partial_pec(partial, 1,
+                                                    buf, data->block);
+                       cpec = data->block[data->block[0] + 1];
+                       break;
+               default:
+                       cpec = rpec = 0;
+                       break;
+       }
+       if(rpec != cpec) {
+               DEB(printk(KERN_DEBUG "i2c-core.o: Bad PEC 0x%02x vs. 0x%02x\n",
+                          rpec, cpec));
+               return -1;
+       }
+       return 0;       
+}
+
 extern s32 i2c_smbus_write_quick(struct i2c_client * client, u8 value)
 {
        return i2c_smbus_xfer(client->adapter,client->addr,client->flags,
@@ -983,8 +1055,9 @@
 
 extern s32 i2c_smbus_write_byte(struct i2c_client * client, u8 value)
 {
+       union i2c_smbus_data data;      /* only for PEC */
        return i2c_smbus_xfer(client->adapter,client->addr,client->flags,
-                             I2C_SMBUS_WRITE,value, I2C_SMBUS_BYTE,NULL);
+                             I2C_SMBUS_WRITE,value, I2C_SMBUS_BYTE,&data);
 }
 
 extern s32 i2c_smbus_read_byte_data(struct i2c_client * client, u8 command)
@@ -1072,6 +1145,43 @@
                              I2C_SMBUS_BLOCK_DATA,&data);
 }
 
+/* Returns the number of read bytes */
+extern s32 i2c_smbus_block_process_call(struct i2c_client * client,
+                                        u8 command, u8 length, u8 *values)
+{
+       union i2c_smbus_data data;
+       int i;
+       if (length > I2C_SMBUS_BLOCK_MAX - 1)
+               return -1;
+       data.block[0] = length;
+       for (i = 1; i <= length; i++)
+               data.block[i] = values[i-1];
+       if(i2c_smbus_xfer(client->adapter,client->addr,client->flags,
+                         I2C_SMBUS_WRITE, command,
+                         I2C_SMBUS_BLOCK_PROC_CALL, &data))
+               return -1;
+       for (i = 1; i <= data.block[0]; i++)
+               values[i-1] = data.block[i];
+       return data.block[0];
+}
+
+/* Returns the number of read bytes */
+extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client,
+                                         u8 command, u8 *values)
+{
+       union i2c_smbus_data data;
+       int i;
+       if (i2c_smbus_xfer(client->adapter,client->addr,client->flags,
+                             I2C_SMBUS_READ,command,
+                             I2C_SMBUS_I2C_BLOCK_DATA,&data))
+               return -1;
+       else {
+               for (i = 1; i <= data.block[0]; i++)
+                       values[i-1] = data.block[i];
+               return data.block[0];
+       }
+}
+
 extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client * client,
                                           u8 command, u8 length, u8 *values)
 {
@@ -1098,13 +1208,13 @@
          need to use only one message; when reading, we need two. We initialize
          most things with sane defaults, to keep the code below somewhat
          simpler. */
-       unsigned char msgbuf0[34];
-       unsigned char msgbuf1[34];
+       unsigned char msgbuf0[I2C_SMBUS_BLOCK_MAX+2];
+       unsigned char msgbuf1[I2C_SMBUS_BLOCK_MAX+2];
        int num = read_write == I2C_SMBUS_READ?2:1;
        struct i2c_msg msg[2] = { { addr, flags, 1, msgbuf0 }, 
                                  { addr, flags | I2C_M_RD, 0, msgbuf1 }
                                };
-       int i;
+       int i, len;
 
        msgbuf0[0] = command;
        switch(size) {
@@ -1140,16 +1250,30 @@
                break;
        case I2C_SMBUS_PROC_CALL:
                num = 2; /* Special case */
+               read_write = I2C_SMBUS_READ;
                msg[0].len = 3;
                msg[1].len = 2;
                msgbuf0[1] = data->word & 0xff;
                msgbuf0[2] = (data->word >> 8) & 0xff;
                break;
        case I2C_SMBUS_BLOCK_DATA:
+       case I2C_SMBUS_BLOCK_DATA_PEC:
                if (read_write == I2C_SMBUS_READ) {
-                       printk(KERN_ERR "i2c-core.o: Block read not supported "
-                              "under I2C emulation!\n");
-                       return -1;
+                       /* I2C_FUNC_SMBUS_EMUL doesn't include I2C_FUNC_SMBUS_READ_BLOCK_DATA */
+                       if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_READ_BLOCK_DATA)) {
+                               printk(KERN_ERR "i2c-core.o: Block read not supported "
+                                      "under I2C emulation!\n");
+                               return -1;
+                       }
+                       /* set send message */
+                       msg[0].len = 1;
+                       /* set recv message */
+                       msg[1].flags |= I2C_M_RECV_LEN;
+                       msg[1].len = I2C_SMBUS_BLOCK_MAX + 1;
+                       if (size == I2C_SMBUS_BLOCK_DATA_PEC) {
+                               msg[1].len++;
+                               msg[1].flags |= I2C_M_RECV_PEC;
+                       }
                } else {
                        msg[0].len = data->block[0] + 2;
                        if (msg[0].len > I2C_SMBUS_BLOCK_MAX + 2) {
@@ -1158,10 +1282,57 @@
                                       data->block[0]);
                                return -1;
                        }
+                       if(size == I2C_SMBUS_BLOCK_DATA_PEC)
+                               (msg[0].len)++;
                        for (i = 1; i <= msg[0].len; i++)
                                msgbuf0[i] = data->block[i-1];
                }
                break;
+       case I2C_SMBUS_BLOCK_PROC_CALL:
+       case I2C_SMBUS_BLOCK_PROC_CALL_PEC:
+               /* I2C_FUNC_SMBUS_EMUL doesn't include I2C_FUNC_SMBUS_BLOCK_PROC_CALL */
+               if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BLOCK_PROC_CALL)) {
+                       printk(KERN_ERR "i2c-core.o: adapter doesn't support block process call!\n");
+                       return -1;
+               }
+
+               /* Another special case */
+               num = 2;
+               read_write = I2C_SMBUS_READ;
+               
+               /* set send message */
+               msg[0].len = data->block[0] + 2;
+               if (msg[0].len > I2C_SMBUS_BLOCK_MAX + 2) {
+                       printk(KERN_ERR "i2c-core.o: smbus_access called with "
+                               "invalid block write size (%d)\n", data->block[0]);
+                       return -1;
+               }
+               for (i = 1; i <= msg[0].len; i++)
+                       msgbuf0[i] = data->block[i-1];
+               
+               /* set recv message */
+               msg[1].flags |= I2C_M_RECV_LEN;
+               msg[1].len = I2C_SMBUS_BLOCK_MAX + 1;
+               if (size == I2C_SMBUS_BLOCK_PROC_CALL_PEC) {
+                       msg[1].len++;
+                       msg[1].flags |= I2C_M_RECV_PEC;
+               }
+               break;
+       case I2C_SMBUS_I2C_BLOCK_DATA:
+               if (read_write == I2C_SMBUS_READ) {
+                       msg[1].len = I2C_SMBUS_I2C_BLOCK_MAX;
+               } else {
+                       msg[0].len = data->block[0] + 1;
+                       if (msg[0].len > I2C_SMBUS_I2C_BLOCK_MAX + 1) {
+                               printk("i2c-core.o: i2c_smbus_xfer_emulated called with "
+                                      "invalid block write size (%d)\n",
+                                      data->block[0]);
+                               return -1;
+                       }
+                       for (i = 1; i <= data->block[0]; i++)
+                               msgbuf0[i] = data->block[i];
+               }
+               break;
        default:
                printk(KERN_ERR "i2c-core.o: smbus_access called with invalid size (%d)\n",
                       size);
@@ -1183,25 +1354,72 @@
                        case I2C_SMBUS_PROC_CALL:
                                data->word = msgbuf1[0] | (msgbuf1[1] << 8);
                                break;
+                       case I2C_SMBUS_I2C_BLOCK_DATA:
+                               /* fixed at 32 for now */
+                               data->block[0] = I2C_SMBUS_I2C_BLOCK_MAX;
+                               for (i = 0; i < I2C_SMBUS_I2C_BLOCK_MAX; i++)
+                                       data->block[i+1] = msgbuf1[i];
+                               break;
+                       case I2C_SMBUS_BLOCK_DATA:
+                       case I2C_SMBUS_BLOCK_PROC_CALL:
+                       case I2C_SMBUS_BLOCK_DATA_PEC:
+                       case I2C_SMBUS_BLOCK_PROC_CALL_PEC:
+                               len = msgbuf1[0] + 1;
+                               if(size == I2C_SMBUS_BLOCK_DATA_PEC ||
+                                  size == I2C_SMBUS_BLOCK_PROC_CALL_PEC)
+                                       len++;
+                               for (i = 0; i < len; i++)
+                                       data->block[i] = msgbuf1[i];
+                               break;
                }
        return 0;
 }
 
 
-s32 i2c_smbus_xfer(struct i2c_adapter * adapter, u16 addr, unsigned short flags,
+s32 i2c_smbus_xfer(struct i2c_adapter * adap, u16 addr, unsigned short flags,
                    char read_write, u8 command, int size, 
                    union i2c_smbus_data * data)
 {
        s32 res;
-       flags = flags & I2C_M_TEN;
-       if (adapter->algo->smbus_xfer) {
-               I2C_LOCK(adapter);
-               res = adapter->algo->smbus_xfer(adapter,addr,flags,read_write,
+       int swpec = 0;
+       u8 partial = 0;
+
+       flags &= I2C_M_TEN | I2C_CLIENT_PEC;
+       if((flags & I2C_CLIENT_PEC) &&
+          !(i2c_check_functionality(adap, I2C_FUNC_SMBUS_HWPEC_CALC))) {
+               swpec = 1;
+               if(read_write == I2C_SMBUS_READ &&
+                  size == I2C_SMBUS_BLOCK_DATA)
+                       size = I2C_SMBUS_BLOCK_DATA_PEC;
+               else if(size == I2C_SMBUS_PROC_CALL)
+                       size = I2C_SMBUS_PROC_CALL_PEC;
+               else if(size == I2C_SMBUS_BLOCK_PROC_CALL) {
+                       i2c_smbus_add_pec(addr, command,
+                                         I2C_SMBUS_BLOCK_DATA, data);
+                       partial = data->block[data->block[0] + 1];
+                       size = I2C_SMBUS_BLOCK_PROC_CALL_PEC;
+               } else if(read_write == I2C_SMBUS_WRITE &&
+                         size != I2C_SMBUS_QUICK &&
+                         size != I2C_SMBUS_I2C_BLOCK_DATA)
+                       size = i2c_smbus_add_pec(addr, command, size, data);
+       }
+
+       if (adap->algo->smbus_xfer) {
+               down(&adap->bus);
+               res = adap->algo->smbus_xfer(adap,addr,flags,read_write,
                                                command,size,data);
-               I2C_UNLOCK(adapter);
+               up(&adap->bus);
        } else
-               res = i2c_smbus_xfer_emulated(adapter,addr,flags,read_write,
+               res = i2c_smbus_xfer_emulated(adap,addr,flags,read_write,
                                              command,size,data);
+
+       if(res >= 0 && swpec &&
+          size != I2C_SMBUS_QUICK && size != I2C_SMBUS_I2C_BLOCK_DATA &&
+          (read_write == I2C_SMBUS_READ || size == I2C_SMBUS_PROC_CALL_PEC ||
+           size == I2C_SMBUS_BLOCK_PROC_CALL_PEC)) {
+               if(i2c_smbus_check_pec(addr, command, size, partial, data))
+                       return -1;
+       }
        return res;
 }
 
@@ -1228,136 +1446,37 @@
        printk(KERN_INFO "i2c-core.o: i2c core module version %s (%s)\n", I2C_VERSION, I2C_DATE);
        memset(adapters,0,sizeof(adapters));
        memset(drivers,0,sizeof(drivers));
-       adap_count=0;
-       driver_count=0;
 
-       init_MUTEX(&adap_lock);
-       init_MUTEX(&driver_lock);
-       
-       i2cproc_init();
-       
+#ifdef CONFIG_PROC_FS
+       return i2cproc_init();
+#else
        return 0;
-}
-
-#ifndef MODULE
-#ifdef CONFIG_I2C_CHARDEV
-       extern int i2c_dev_init(void);
-#endif
-#ifdef CONFIG_I2C_ALGOBIT
-       extern int i2c_algo_bit_init(void);
-#endif
-#ifdef CONFIG_I2C_PHILIPSPAR
-       extern int i2c_bitlp_init(void);
-#endif
-#ifdef CONFIG_I2C_ELV
-       extern int i2c_bitelv_init(void);
-#endif
-#ifdef CONFIG_I2C_VELLEMAN
-       extern int i2c_bitvelle_init(void);
-#endif
-#ifdef CONFIG_I2C_BITVIA
-       extern int i2c_bitvia_init(void);
-#endif
-
-#ifdef CONFIG_I2C_ALGOPCF
-       extern int i2c_algo_pcf_init(void);     
-#endif
-#ifdef CONFIG_I2C_ELEKTOR
-       extern int i2c_pcfisa_init(void);
-#endif
-
-#ifdef CONFIG_I2C_ALGO8XX
-       extern int i2c_algo_8xx_init(void);
-#endif
-#ifdef CONFIG_I2C_RPXLITE
-       extern int i2c_rpx_init(void);
-#endif
-
-#ifdef CONFIG_I2C_ALGO_SIBYTE
-       extern int i2c_algo_sibyte_init(void);
-       extern int i2c_sibyte_init(void);
-#endif
-#ifdef CONFIG_I2C_MAX1617
-       extern int i2c_max1617_init(void);
 #endif
+}
 
-#ifdef CONFIG_I2C_PROC
-       extern int sensors_init(void);
+static void __exit i2c_exit(void) 
+{
+#ifdef CONFIG_PROC_FS
+       i2cproc_cleanup();
 #endif
+}
 
-/* This is needed for automatic patch generation: sensors code starts here */
-/* This is needed for automatic patch generation: sensors code ends here   */
-
+/* leave this in for now simply to make patching easier so we don't have
+   to remove the call in drivers/char/mem.c */
 int __init i2c_init_all(void)
 {
-       /* --------------------- global ----- */
-       i2c_init();
-
-#ifdef CONFIG_I2C_CHARDEV
-       i2c_dev_init();
-#endif
-       /* --------------------- bit -------- */
-#ifdef CONFIG_I2C_ALGOBIT
-       i2c_algo_bit_init();
-#endif
-#ifdef CONFIG_I2C_PHILIPSPAR
-       i2c_bitlp_init();
-#endif
-#ifdef CONFIG_I2C_ELV
-       i2c_bitelv_init();
-#endif
-#ifdef CONFIG_I2C_VELLEMAN
-       i2c_bitvelle_init();
-#endif
-
-       /* --------------------- pcf -------- */
-#ifdef CONFIG_I2C_ALGOPCF
-       i2c_algo_pcf_init();    
-#endif
-#ifdef CONFIG_I2C_ELEKTOR
-       i2c_pcfisa_init();
-#endif
-
-       /* --------------------- 8xx -------- */
-#ifdef CONFIG_I2C_ALGO8XX
-       i2c_algo_8xx_init();
-#endif
-#ifdef CONFIG_I2C_RPXLITE
-       i2c_rpx_init();
-#endif
-
-       /* --------------------- SiByte -------- */
-#ifdef CONFIG_I2C_ALGO_SIBYTE
-       i2c_algo_sibyte_init();
-       i2c_sibyte_init();
-#endif
-#ifdef CONFIG_I2C_MAX1617
-       i2c_max1617_init();
-#endif
-
-       /* -------------- proc interface ---- */
-#ifdef CONFIG_I2C_PROC
-       sensors_init();
-#endif
-/* This is needed for automatic patch generation: sensors code starts here */
-/* This is needed for automatic patch generation: sensors code ends here */
-
        return 0;
 }
 
-#endif
-
-
-
 EXPORT_SYMBOL(i2c_add_adapter);
 EXPORT_SYMBOL(i2c_del_adapter);
 EXPORT_SYMBOL(i2c_add_driver);
 EXPORT_SYMBOL(i2c_del_driver);
 EXPORT_SYMBOL(i2c_attach_client);
 EXPORT_SYMBOL(i2c_detach_client);
-EXPORT_SYMBOL(i2c_inc_use_client);
-EXPORT_SYMBOL(i2c_dec_use_client);
+#if 0
 EXPORT_SYMBOL(i2c_get_client);
+#endif
 EXPORT_SYMBOL(i2c_use_client);
 EXPORT_SYMBOL(i2c_release_client);
 EXPORT_SYMBOL(i2c_check_addr);
@@ -1381,11 +1500,12 @@
 EXPORT_SYMBOL(i2c_smbus_process_call);
 EXPORT_SYMBOL(i2c_smbus_read_block_data);
 EXPORT_SYMBOL(i2c_smbus_write_block_data);
+EXPORT_SYMBOL(i2c_smbus_read_i2c_block_data);
+EXPORT_SYMBOL(i2c_smbus_write_i2c_block_data);
 
 EXPORT_SYMBOL(i2c_get_functionality);
 EXPORT_SYMBOL(i2c_check_functionality);
 
-#ifdef MODULE
 MODULE_AUTHOR("Simon G. Vogl <simon@tk.uni-linz.ac.at>");
 MODULE_DESCRIPTION("I2C-Bus main module");
 MODULE_LICENSE("GPL");
@@ -1393,13 +1513,5 @@
 MODULE_PARM(i2c_debug, "i");
 MODULE_PARM_DESC(i2c_debug,"debug level");
 
-int init_module(void) 
-{
-       return i2c_init();
-}
-
-void cleanup_module(void) 
-{
-       i2cproc_cleanup();
-}
-#endif
+module_init(i2c_init);
+module_exit(i2c_exit);
diff -urN linux-2.4.24.org/drivers/i2c/i2c-dev.c linux-2.4.24/drivers/i2c/i2c-dev.c
--- linux-2.4.24.org/drivers/i2c/i2c-dev.c      2004-02-04 22:33:47.320044595 +0100
+++ linux-2.4.24/drivers/i2c/i2c-dev.c  2004-02-04 22:36:36.672827404 +0100
@@ -28,9 +28,8 @@
 /* The devfs code is contributed by Philipp Matthias Hahn 
    <pmhahn@titan.lahn.de> */
 
-/* $Id$ */
+/* $Id$ */
 
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/fs.h>
@@ -39,21 +38,14 @@
 #ifdef CONFIG_DEVFS_FS
 #include <linux/devfs_fs_kernel.h>
 #endif
-
-
-/* If you want debugging uncomment: */
-/* #define DEBUG */
-
 #include <linux/init.h>
-#include <asm/uaccess.h>
-
 #include <linux/i2c.h>
 #include <linux/i2c-dev.h>
+#include <asm/uaccess.h>
+
+/* If you want debugging uncomment: */
+/* #define DEBUG */
 
-#ifdef MODULE
-extern int init_module(void);
-extern int cleanup_module(void);
-#endif /* def MODULE */
 
 /* struct file_operations changed too often in the 2.1 series for nice code */
 
@@ -73,22 +65,14 @@
 static int i2cdev_command(struct i2c_client *client, unsigned int cmd,
                            void *arg);
 
-#ifdef MODULE
-static
-#else
-extern
-#endif
-       int __init i2c_dev_init(void);
-static int i2cdev_cleanup(void);
-
 static struct file_operations i2cdev_fops = {
-       owner:          THIS_MODULE,
-       llseek:         no_llseek,
-       read:           i2cdev_read,
-       write:          i2cdev_write,
-       ioctl:          i2cdev_ioctl,
-       open:           i2cdev_open,
-       release:        i2cdev_release,
+       .owner          = THIS_MODULE,
+       .llseek         = no_llseek,
+       .read           = i2cdev_read,
+       .write          = i2cdev_write,
+       .ioctl          = i2cdev_ioctl,
+       .open           = i2cdev_open,
+       .release        = i2cdev_release,
 };
 
 #define I2CDEV_ADAPS_MAX I2C_ADAP_MAX
@@ -99,28 +83,22 @@
 #endif
 
 static struct i2c_driver i2cdev_driver = {
-       name:           "i2c-dev dummy driver",
-       id:             I2C_DRIVERID_I2CDEV,
-       flags:          I2C_DF_DUMMY,
-       attach_adapter: i2cdev_attach_adapter,
-       detach_client:  i2cdev_detach_client,
-       command:        i2cdev_command,
-/*     inc_use:        NULL,
-       dec_use:        NULL, */
+       .owner          = THIS_MODULE, /* not really used */
+       .name           = "i2c-dev dummy driver",
+       .id             = I2C_DRIVERID_I2CDEV,
+       .flags          = I2C_DF_DUMMY,
+       .attach_adapter = i2cdev_attach_adapter,
+       .detach_client  = i2cdev_detach_client,
+       .command        = i2cdev_command,
 };
 
 static struct i2c_client i2cdev_client_template = {
-       name:           "I2C /dev entry",
-       id:             1,
-       flags:          0,
-       addr:           -1,
-/*     adapter:        NULL, */
-       driver:         &i2cdev_driver,
-/*     data:           NULL */
+       .name           = "I2C /dev entry",
+       .id             = 1,
+       .addr           = -1,
+       .driver         = &i2cdev_driver,
 };
 
-static int i2cdev_initialized;
-
 static ssize_t i2cdev_read (struct file *file, char *buf, size_t count,
                             loff_t *offset)
 {
@@ -142,7 +120,7 @@
                return -ENOMEM;
 
 #ifdef DEBUG
-       printk(KERN_DEBUG "i2c-dev.o: i2c-%d reading %d bytes.\n",MINOR(inode->i_rdev),
+       printk(KERN_DEBUG "i2c-dev.o: i2c-%d reading %d bytes.\n",minor(inode->i_rdev),
               count);
 #endif
 
@@ -177,7 +155,7 @@
        }
 
 #ifdef DEBUG
-       printk(KERN_DEBUG "i2c-dev.o: i2c-%d writing %d bytes.\n",MINOR(inode->i_rdev),
+       printk(KERN_DEBUG "i2c-dev.o: i2c-%d writing %d bytes.\n",minor(inode->i_rdev),
               count);
 #endif
        ret = i2c_master_send(client,tmp,count);
@@ -199,7 +177,7 @@
 
 #ifdef DEBUG
        printk(KERN_DEBUG "i2c-dev.o: i2c-%d ioctl, cmd: 0x%x, arg: %lx.\n", 
-              MINOR(inode->i_rdev),cmd, arg);
+              minor(inode->i_rdev),cmd, arg);
 #endif /* DEBUG */
 
        switch ( cmd ) {
@@ -218,6 +196,12 @@
                else
                        client->flags &= ~I2C_M_TEN;
                return 0;
+       case I2C_PEC:
+               if (arg)
+                       client->flags |= I2C_CLIENT_PEC;
+               else
+                       client->flags &= ~I2C_CLIENT_PEC;
+               return 0;
        case I2C_FUNCS:
                funcs = i2c_get_functionality(client->adapter);
                return (copy_to_user((unsigned long *)arg,&funcs,
@@ -318,7 +302,8 @@
                    (data_arg.size != I2C_SMBUS_WORD_DATA) &&
                    (data_arg.size != I2C_SMBUS_PROC_CALL) &&
                    (data_arg.size != I2C_SMBUS_BLOCK_DATA) &&
-                   (data_arg.size != I2C_SMBUS_I2C_BLOCK_DATA)) {
+                   (data_arg.size != I2C_SMBUS_I2C_BLOCK_DATA) &&
+                   (data_arg.size != I2C_SMBUS_BLOCK_PROC_CALL)) {
 #ifdef DEBUG
                        printk(KERN_DEBUG "i2c-dev.o: size out of range (%x) in ioctl I2C_SMBUS.\n",
                               data_arg.size);
@@ -361,10 +346,11 @@
                else if ((data_arg.size == I2C_SMBUS_WORD_DATA) || 
                         (data_arg.size == I2C_SMBUS_PROC_CALL))
                        datasize = sizeof(data_arg.data->word);
-               else /* size == I2C_SMBUS_BLOCK_DATA */
+               else /* size == smbus block, i2c block, or block proc. call */
                        datasize = sizeof(data_arg.data->block);
 
                if ((data_arg.size == I2C_SMBUS_PROC_CALL) || 
+                   (data_arg.size == I2C_SMBUS_BLOCK_PROC_CALL) || 
                    (data_arg.read_write == I2C_SMBUS_WRITE)) {
                        if (copy_from_user(&temp, data_arg.data, datasize))
                                return -EFAULT;
@@ -373,6 +359,7 @@
                      data_arg.read_write,
                      data_arg.command,data_arg.size,&temp);
                if (! res && ((data_arg.size == I2C_SMBUS_PROC_CALL) || 
+                             (data_arg.size == I2C_SMBUS_BLOCK_PROC_CALL) || 
                              (data_arg.read_write == I2C_SMBUS_READ))) {
                        if (copy_to_user(data_arg.data, &temp, datasize))
                                return -EFAULT;
@@ -387,7 +374,7 @@
 
 int i2cdev_open (struct inode *inode, struct file *file)
 {
-       unsigned int minor = MINOR(inode->i_rdev);
+       unsigned int minor = minor(inode->i_rdev);
        struct i2c_client *client;
 
        if ((minor >= I2CDEV_ADAPS_MAX) || ! (i2cdev_adaps[minor])) {
@@ -403,11 +390,13 @@
        if(! (client = kmalloc(sizeof(struct i2c_client),GFP_KERNEL)))
                return -ENOMEM;
        memcpy(client,&i2cdev_client_template,sizeof(struct i2c_client));
+
+       /* registered with adapter, passed as client to user */
        client->adapter = i2cdev_adaps[minor];
        file->private_data = client;
 
-       if (i2cdev_adaps[minor]->inc_use)
-               i2cdev_adaps[minor]->inc_use(i2cdev_adaps[minor]);
+       if(client->adapter->owner)
+               __MOD_INC_USE_COUNT(client->adapter->owner);
 
 #ifdef DEBUG
        printk(KERN_DEBUG "i2c-dev.o: opened i2c-%d\n",minor);
@@ -417,16 +406,19 @@
 
 static int i2cdev_release (struct inode *inode, struct file *file)
 {
-       unsigned int minor = MINOR(inode->i_rdev);
-       kfree(file->private_data);
-       file->private_data=NULL;
+       struct i2c_client *client;
+#ifdef DEBUG
+       unsigned int minor = minor(inode->i_rdev);
+#endif
+
+       client = file->private_data;
+       file->private_data = NULL;
+       if(client->adapter->owner)
+               __MOD_DEC_USE_COUNT(client->adapter->owner);
+       kfree(client);
 #ifdef DEBUG
        printk(KERN_DEBUG "i2c-dev.o: Closed: i2c-%d\n", minor);
 #endif
-       lock_kernel();
-       if (i2cdev_adaps[minor]->dec_use)
-               i2cdev_adaps[minor]->dec_use(i2cdev_adaps[minor]);
-       unlock_kernel();
        return 0;
 }
 
@@ -451,7 +443,7 @@
                devfs_i2c[i] = devfs_register (devfs_handle, name,
                        DEVFS_FL_DEFAULT, I2C_MAJOR, i,
                        S_IFCHR | S_IRUSR | S_IWUSR,
-                       &i2cdev_fops, NULL);
+                       &i2cdev_fops, adap);
 #endif
                printk(KERN_DEBUG "i2c-dev.o: Registered '%s' as minor %d\n",adap->name,i);
        } else {
@@ -479,13 +471,12 @@
        return -1;
 }
 
-int __init i2c_dev_init(void)
+static int __init i2c_dev_init(void)
 {
        int res;
 
        printk(KERN_INFO "i2c-dev.o: i2c /dev entries driver module version %s (%s)\n", I2C_VERSION, I2C_DATE);
 
-       i2cdev_initialized = 0;
 #ifdef CONFIG_DEVFS_FS
        if (devfs_register_chrdev(I2C_MAJOR, "i2c", &i2cdev_fops)) {
 #else
@@ -498,63 +489,31 @@
 #ifdef CONFIG_DEVFS_FS
        devfs_handle = devfs_mk_dir(NULL, "i2c", NULL);
 #endif
-       i2cdev_initialized ++;
-
        if ((res = i2c_add_driver(&i2cdev_driver))) {
                printk(KERN_ERR "i2c-dev.o: Driver registration failed, module not inserted.\n");
-               i2cdev_cleanup();
+#ifdef CONFIG_DEVFS_FS
+               devfs_unregister(devfs_handle);
+#endif
+               unregister_chrdev(I2C_MAJOR,"i2c");
                return res;
        }
-       i2cdev_initialized ++;
        return 0;
 }
 
-int i2cdev_cleanup(void)
+static void __exit i2c_dev_exit(void)
 {
-       int res;
-
-       if (i2cdev_initialized >= 2) {
-               if ((res = i2c_del_driver(&i2cdev_driver))) {
-                       printk("i2c-dev.o: Driver deregistration failed, "
-                              "module not removed.\n");
-                       return res;
-               }
-       i2cdev_initialized --;
-       }
-
-       if (i2cdev_initialized >= 1) {
+       i2c_del_driver(&i2cdev_driver);
 #ifdef CONFIG_DEVFS_FS
-               devfs_unregister(devfs_handle);
-               if ((res = devfs_unregister_chrdev(I2C_MAJOR, "i2c"))) {
-#else
-               if ((res = unregister_chrdev(I2C_MAJOR,"i2c"))) {
+       devfs_unregister(devfs_handle);
 #endif
-                       printk("i2c-dev.o: unable to release major %d for i2c bus\n",
-                              I2C_MAJOR);
-                       return res;
-               }
-               i2cdev_initialized --;
-       }
-       return 0;
+       unregister_chrdev(I2C_MAJOR,"i2c");
 }
 
 EXPORT_NO_SYMBOLS;
 
-#ifdef MODULE
-
 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and Simon G. Vogl <simon@tk.uni-linz.ac.at>");
 MODULE_DESCRIPTION("I2C /dev entries driver");
 MODULE_LICENSE("GPL");
 
-int init_module(void)
-{
-       return i2c_dev_init();
-}
-
-int cleanup_module(void)
-{
-       return i2cdev_cleanup();
-}
-
-#endif /* def MODULE */
-
+module_init(i2c_dev_init);
+module_exit(i2c_dev_exit);
diff -urN linux-2.4.24.org/drivers/i2c/i2c-elektor.c linux-2.4.24/drivers/i2c/i2c-elektor.c
--- linux-2.4.24.org/drivers/i2c/i2c-elektor.c  2004-02-04 22:33:47.601985965 +0100
+++ linux-2.4.24/drivers/i2c/i2c-elektor.c      2004-02-04 22:36:36.682825325 +0100
@@ -31,23 +31,22 @@
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/init.h>
+#include <linux/interrupt.h>
 #include <linux/pci.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-
+#include <linux/wait.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-pcf.h>
-#include <linux/i2c-elektor.h>
-#include "i2c-pcf8584.h"
+#include <asm/io.h>
+#include <asm/irq.h>
 
 #define DEFAULT_BASE 0x330
 
-static int base   = 0;
-static int irq    = 0;
+static int base;
+static int irq;
 static int clock  = 0x1c;
 static int own    = 0x55;
-static int mmapped = 0;
-static int i2c_debug = 0;
+static int mmapped;
+static int i2c_debug;
 
 /* vdovikin: removed static struct i2c_pcf_isa gpi; code - 
   this module in real supports only one device, due to missing arguments
@@ -56,6 +55,7 @@
 
 static wait_queue_head_t pcf_wait;
 static int pcf_pending;
+static spinlock_t irq_driver_lock = SPIN_LOCK_UNLOCKED;
 
 /* ----- global defines -----------------------------------------------        */
 #define DEB(x) if (i2c_debug>=1) x
@@ -63,13 +63,24 @@
 #define DEB3(x) if (i2c_debug>=3) x
 #define DEBE(x)        x       /* error messages                               */
 
+
+/* compatibility */
+#ifndef isa_readb
+#define isa_readb readb
+#endif
+
+#ifndef isa_writeb
+#define isa_writeb writeb
+#endif
+
 /* ----- local functions ----------------------------------------------        */
 
 static void pcf_isa_setbyte(void *data, int ctl, int val)
 {
        int address = ctl ? (base + 1) : base;
 
-       if (ctl && irq) {
+       /* enable irq if any specified for serial operation */
+       if (ctl && irq && (val & I2C_PCF_ESO)) {
                val |= I2C_PCF_ENI;
        }
 
@@ -81,10 +92,10 @@
                break;
        case 2: /* double mapped I/O needed for UP2000 board,
                    I don't know why this... */
-               writeb(val, address);
+               isa_writeb(val, address);
                /* fall */
        case 1: /* memory mapped I/O */
-               writeb(val, address);
+               isa_writeb(val, address);
                break;
        }
 }
@@ -92,7 +103,7 @@
 static int pcf_isa_getbyte(void *data, int ctl)
 {
        int address = ctl ? (base + 1) : base;
-       int val = mmapped ? readb(address) : inb(address);
+       int val = mmapped ? isa_readb(address) : inb(address);
 
        DEB3(printk(KERN_DEBUG "i2c-elektor.o: Read 0x%X 0x%02X\n", address, val));
 
@@ -115,12 +126,12 @@
        int timeout = 2;
 
        if (irq > 0) {
-               cli();
+               spin_lock_irq(&irq_driver_lock);
                if (pcf_pending == 0) {
                        interruptible_sleep_on_timeout(&pcf_wait, timeout*HZ );
                } else
                        pcf_pending = 0;
-               sti();
+               spin_unlock_irq(&irq_driver_lock);
        } else {
                udelay(100);
        }
@@ -136,13 +147,11 @@
 static int pcf_isa_init(void)
 {
        if (!mmapped) {
-               if (check_region(base, 2) < 0 ) {
+               if (!request_region(base, 2, "i2c (isa bus adapter)")) {
                        printk(KERN_ERR
                               "i2c-elektor.o: requested I/O region (0x%X:2) "
                               "is in use.\n", base);
                        return -ENODEV;
-               } else {
-                       request_region(base, 2, "i2c (isa bus adapter)");
                }
        }
        if (irq > 0) {
@@ -156,70 +165,29 @@
 }
 
 
-static void __exit pcf_isa_exit(void)
-{
-       if (irq > 0) {
-               disable_irq(irq);
-               free_irq(irq, 0);
-       }
-       if (!mmapped) {
-               release_region(base , 2);
-       }
-}
-
-
-static int pcf_isa_reg(struct i2c_client *client)
-{
-       return 0;
-}
-
-
-static int pcf_isa_unreg(struct i2c_client *client)
-{
-       return 0;
-}
-
-static void pcf_isa_inc_use(struct i2c_adapter *adap)
-{
-#ifdef MODULE
-       MOD_INC_USE_COUNT;
-#endif
-}
-
-static void pcf_isa_dec_use(struct i2c_adapter *adap)
-{
-#ifdef MODULE
-       MOD_DEC_USE_COUNT;
-#endif
-}
-
-
 /* ------------------------------------------------------------------------
  * Encapsulate the above functions in the correct operations structure.
  * This is only done when more than one hardware adapter is supported.
  */
 static struct i2c_algo_pcf_data pcf_isa_data = {
-       NULL,
-       pcf_isa_setbyte,
-       pcf_isa_getbyte,
-       pcf_isa_getown,
-       pcf_isa_getclock,
-       pcf_isa_waitforpin,
-       10, 10, 100,            /*      waits, timeout */
+       .setpcf     = pcf_isa_setbyte,
+       .getpcf     = pcf_isa_getbyte,
+       .getown     = pcf_isa_getown,
+       .getclock   = pcf_isa_getclock,
+       .waitforpin = pcf_isa_waitforpin,
+       .udelay     = 10,
+       .mdelay     = 10,
+       .timeout    = HZ,
 };
 
 static struct i2c_adapter pcf_isa_ops = {
-       "PCF8584 ISA adapter",
-       I2C_HW_P_ELEK,
-       NULL,
-       &pcf_isa_data,
-       pcf_isa_inc_use,
-       pcf_isa_dec_use,
-       pcf_isa_reg,
-       pcf_isa_unreg,
+       .owner             = THIS_MODULE,
+       .name              = "PCF8584 ISA adapter",
+       .id                = I2C_HW_P_ELEK,
+       .algo_data         = &pcf_isa_data,
 };
 
-int __init i2c_pcfisa_init(void) 
+static int __init i2c_pcfisa_init(void) 
 {
 #ifdef __alpha__
        /* check to see we have memory mapped PCF8584 connected to the 
@@ -277,22 +245,41 @@
        }
 
        init_waitqueue_head(&pcf_wait);
-       if (pcf_isa_init() == 0) {
-               if (i2c_pcf_add_bus(&pcf_isa_ops) < 0)
-                       return -ENODEV;
-       } else {
+       if (pcf_isa_init())
                return -ENODEV;
-       }
+       if (i2c_pcf_add_bus(&pcf_isa_ops) < 0)
+               goto fail;
        
        printk(KERN_DEBUG "i2c-elektor.o: found device at %#x.\n", base);
 
        return 0;
+
+ fail:
+       if (irq > 0) {
+               disable_irq(irq);
+               free_irq(irq, 0);
+       }
+
+       if (!mmapped)
+               release_region(base , 2);
+       return -ENODEV;
 }
 
+static void __exit i2c_pcfisa_exit(void)
+{
+       i2c_pcf_del_bus(&pcf_isa_ops);
+
+       if (irq > 0) {
+               disable_irq(irq);
+               free_irq(irq, 0);
+       }
+
+       if (!mmapped)
+               release_region(base , 2);
+}
 
 EXPORT_NO_SYMBOLS;
 
-#ifdef MODULE
 MODULE_AUTHOR("Hans Berglund <hb@spacetec.no>");
 MODULE_DESCRIPTION("I2C-Bus adapter routines for PCF8584 ISA bus adapter");
 MODULE_LICENSE("GPL");
@@ -304,15 +291,5 @@
 MODULE_PARM(mmapped, "i");
 MODULE_PARM(i2c_debug, "i");
 
-int init_module(void) 
-{
-       return i2c_pcfisa_init();
-}
-
-void cleanup_module(void) 
-{
-       i2c_pcf_del_bus(&pcf_isa_ops);
-       pcf_isa_exit();
-}
-
-#endif
+module_init(i2c_pcfisa_init);
+module_exit(i2c_pcfisa_exit);
diff -urN linux-2.4.24.org/drivers/i2c/i2c-elv.c linux-2.4.24/drivers/i2c/i2c-elv.c
--- linux-2.4.24.org/drivers/i2c/i2c-elv.c      2004-02-04 22:33:47.624981184 +0100
+++ linux-2.4.24/drivers/i2c/i2c-elv.c  2004-02-04 22:36:36.688824077 +0100
@@ -21,21 +21,18 @@
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
    Frodo Looijaard <frodol@dds.nl> */
 
-/* $Id$ */
+/* $Id$ */
 
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/init.h>
-
-#include <asm/uaccess.h>
-
 #include <linux/ioport.h>
-#include <asm/io.h>
 #include <linux/errno.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-bit.h>
+#include <asm/io.h>
 
 #define DEFAULT_BASE 0x378
 static int base=0;
@@ -89,58 +86,31 @@
 
 static int bit_elv_init(void)
 {
-       if (check_region(base,(base == 0x3bc)? 3 : 8) < 0 ) {
-               return -ENODEV; 
-       } else {
-                                               /* test for ELV adap.   */
-               if (inb(base+1) & 0x80) {       /* BUSY should be high  */
-                       DEBINIT(printk(KERN_DEBUG "i2c-elv.o: Busy was low.\n"));
-                       return -ENODEV;
-               } else {
-                       outb(0x0c,base+2);      /* SLCT auf low         */
-                       udelay(400);
-                       if ( !(inb(base+1) && 0x10) ) {
-                               outb(0x04,base+2);
-                               DEBINIT(printk(KERN_DEBUG "i2c-elv.o: Select was high.\n"));
-                               return -ENODEV;
-                       }
-               }
-               request_region(base,(base == 0x3bc)? 3 : 8,
-                       "i2c (ELV adapter)");
-               PortData = 0;
-               bit_elv_setsda((void*)base,1);
-               bit_elv_setscl((void*)base,1);
+       if (!request_region(base, (base == 0x3bc) ? 3 : 8,
+                               "i2c (ELV adapter)"))
+               return -ENODEV;
+
+       if (inb(base+1) & 0x80) {       /* BUSY should be high  */
+               DEBINIT(printk(KERN_DEBUG "i2c-elv.o: Busy was low.\n"));
+               goto fail;
+       } 
+
+       outb(0x0c,base+2);      /* SLCT auf low         */
+       udelay(400);
+       if (!(inb(base+1) && 0x10)) {
+               outb(0x04,base+2);
+               DEBINIT(printk(KERN_DEBUG "i2c-elv.o: Select was high.\n"));
+               goto fail;
        }
-       return 0;
-}
-
-static void __exit bit_elv_exit(void)
-{
-       release_region( base , (base == 0x3bc)? 3 : 8 );
-}
-
-static int bit_elv_reg(struct i2c_client *client)
-{
-       return 0;
-}
 
-static int bit_elv_unreg(struct i2c_client *client)
-{
+       PortData = 0;
+       bit_elv_setsda((void*)base,1);
+       bit_elv_setscl((void*)base,1);
        return 0;
-}
 
-static void bit_elv_inc_use(struct i2c_adapter *adap)
-{
-#ifdef MODULE
-       MOD_INC_USE_COUNT;
-#endif
-}
-
-static void bit_elv_dec_use(struct i2c_adapter *adap)
-{
-#ifdef MODULE
-       MOD_DEC_USE_COUNT;
-#endif
+fail:
+       release_region(base , (base == 0x3bc) ? 3 : 8);
+       return -ENODEV;
 }
 
 /* ------------------------------------------------------------------------
@@ -148,26 +118,23 @@
  * This is only done when more than one hardware adapter is supported.
  */
 static struct i2c_algo_bit_data bit_elv_data = {
-       NULL,
-       bit_elv_setsda,
-       bit_elv_setscl,
-       bit_elv_getsda,
-       bit_elv_getscl,
-       80, 80, 100,            /*      waits, timeout */
+       .setsda         = bit_elv_setsda,
+       .setscl         = bit_elv_setscl,
+       .getsda         = bit_elv_getsda,
+       .getscl         = bit_elv_getscl,
+       .udelay         = 80,
+       .mdelay         = 80,
+       .timeout        = HZ
 };
 
 static struct i2c_adapter bit_elv_ops = {
-       "ELV Parallel port adaptor",
-       I2C_HW_B_ELV,
-       NULL,
-       &bit_elv_data,
-       bit_elv_inc_use,
-       bit_elv_dec_use,
-       bit_elv_reg,
-       bit_elv_unreg,  
+       .owner          = THIS_MODULE,
+       .name           = "ELV Parallel port adaptor",
+       .id             = I2C_HW_B_ELV,
+       .algo_data      = &bit_elv_data,
 };
 
-int __init i2c_bitelv_init(void)
+static int __init i2c_bitelv_init(void)
 {
        printk(KERN_INFO "i2c-elv.o: i2c ELV parallel port adapter module version %s (%s)\n", I2C_VERSION, I2C_DATE);
        if (base==0) {
@@ -193,25 +160,19 @@
        return 0;
 }
 
+static void __exit i2c_bitelv_exit(void)
+{
+       i2c_bit_del_bus(&bit_elv_ops);
+       release_region(base, (base == 0x3bc) ? 3 : 8);
+}
 
 EXPORT_NO_SYMBOLS;
 
-#ifdef MODULE
 MODULE_AUTHOR("Simon G. Vogl <simon@tk.uni-linz.ac.at>");
 MODULE_DESCRIPTION("I2C-Bus adapter routines for ELV parallel port adapter");
 MODULE_LICENSE("GPL");
 
 MODULE_PARM(base, "i");
 
-int init_module(void)
-{
-       return i2c_bitelv_init();
-}
-
-void cleanup_module(void)
-{
-       i2c_bit_del_bus(&bit_elv_ops);
-       bit_elv_exit();
-}
-
-#endif
+module_init(i2c_bitelv_init);
+module_exit(i2c_bitelv_exit);
diff -urN linux-2.4.24.org/drivers/i2c/i2c-frodo.c linux-2.4.24/drivers/i2c/i2c-frodo.c
--- linux-2.4.24.org/drivers/i2c/i2c-frodo.c    1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.24/drivers/i2c/i2c-frodo.c        2004-02-04 22:36:36.692823246 +0100
@@ -0,0 +1,83 @@
+
+/*
+ * linux/drivers/i2c/i2c-frodo.c
+ *
+ * Author: Abraham van der Merwe <abraham@2d3d.co.za>
+ *
+ * An I2C adapter driver for the 2d3D, Inc. StrongARM SA-1110
+ * Development board (Frodo).
+ *
+ * This source code is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+#include <asm/hardware.h>
+
+
+static void frodo_setsda (void *data,int state)
+{
+       if (state)
+               FRODO_CPLD_I2C |= FRODO_I2C_SDA_OUT;
+       else
+               FRODO_CPLD_I2C &= ~FRODO_I2C_SDA_OUT;
+}
+
+static void frodo_setscl (void *data,int state)
+{
+       if (state)
+               FRODO_CPLD_I2C |= FRODO_I2C_SCL_OUT;
+       else
+               FRODO_CPLD_I2C &= ~FRODO_I2C_SCL_OUT;
+}
+
+static int frodo_getsda (void *data)
+{
+       return ((FRODO_CPLD_I2C & FRODO_I2C_SDA_IN) != 0);
+}
+
+static int frodo_getscl (void *data)
+{
+       return ((FRODO_CPLD_I2C & FRODO_I2C_SCL_IN) != 0);
+}
+
+static struct i2c_algo_bit_data bit_frodo_data = {
+       .setsda         = frodo_setsda,
+       .setscl         = frodo_setscl,
+       .getsda         = frodo_getsda,
+       .getscl         = frodo_getscl,
+       .udelay         = 80,
+       .mdelay         = 80,
+       .timeout        = HZ
+};
+
+static struct i2c_adapter frodo_ops = {
+       .owner                  = THIS_MODULE,
+       .name                   = "Frodo adapter driver",
+       .id                     = I2C_HW_B_FRODO,
+       .algo_data              = &bit_frodo_data,
+};
+
+static int __init i2c_frodo_init (void)
+{
+       return i2c_bit_add_bus(&frodo_ops);
+}
+
+static void __exit i2c_frodo_exit (void)
+{
+       i2c_bit_del_bus(&frodo_ops);
+}
+
+MODULE_AUTHOR ("Abraham van der Merwe <abraham@2d3d.co.za>");
+MODULE_DESCRIPTION ("I2C-Bus adapter routines for Frodo");
+MODULE_LICENSE ("GPL");
+
+module_init (i2c_frodo_init);
+module_exit (i2c_frodo_exit);
+
diff -urN linux-2.4.24.org/drivers/i2c/i2c-pcf-epp.c linux-2.4.24/drivers/i2c/i2c-pcf-epp.c
--- linux-2.4.24.org/drivers/i2c/i2c-pcf-epp.c  1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.24/drivers/i2c/i2c-pcf-epp.c      2004-02-04 22:36:36.696822414 +0100
@@ -0,0 +1,281 @@
+/* ------------------------------------------------------------------------- */
+/* i2c-pcf-epp.c i2c-hw access for PCF8584 style EPP parallel port adapters  */
+/* ------------------------------------------------------------------------- */
+/*   Copyright (C) 1998-99 Hans Berglund
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               */
+/* ------------------------------------------------------------------------- */
+
+/* With some changes from Ryosuke Tajima <rosk@jsk.t.u-tokyo.ac.jp> */
+
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/parport.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-pcf.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+
+
+struct  i2c_pcf_epp {
+  int pe_base;
+  int pe_irq;
+  int pe_clock;
+  int pe_own;
+} ;
+
+#define DEFAULT_BASE 0x378
+#define DEFAULT_IRQ      7
+#define DEFAULT_CLOCK 0x1c
+#define DEFAULT_OWN   0x55
+
+static int base  = 0;
+static int irq   = 0;
+static int clock = 0;
+static int own   = 0;
+static int i2c_debug=0;
+static struct i2c_pcf_epp gpe;
+static wait_queue_head_t pcf_wait;
+static int pcf_pending;
+static spinlock_t irq_driver_lock = SPIN_LOCK_UNLOCKED;
+
+/* ----- global defines -----------------------------------------------        */
+#define DEB(x) if (i2c_debug>=1) x
+#define DEB2(x) if (i2c_debug>=2) x
+#define DEB3(x) if (i2c_debug>=3) x
+#define DEBE(x)        x       /* error messages                               */
+
+/* --- Convenience defines for the EPP/SPP port:                       */
+#define BASE   ((struct i2c_pcf_epp *)(data))->pe_base
+// #define DATA        BASE                    /* SPP data port */
+#define STAT   (BASE+1)                /* SPP status port */
+#define CTRL   (BASE+2)                /* SPP control port */
+#define EADD   (BASE+3)                /* EPP address port */
+#define EDAT   (BASE+4)                /* EPP data port */
+
+/* ----- local functions ----------------------------------------------        */
+
+static void pcf_epp_setbyte(void *data, int ctl, int val)
+{
+  if (ctl) {
+    if (gpe.pe_irq > 0) {
+      DEB3(printk(KERN_DEBUG "i2c-pcf-epp.o: Write control 0x%x\n",
+                 val|I2C_PCF_ENI));
+      // set A0 pin HIGH
+      outb(inb(CTRL) | PARPORT_CONTROL_INIT, CTRL);
+      // DEB3(printk(KERN_DEBUG "i2c-pcf-epp.o: CTRL port = 0x%x\n", inb(CTRL)));
+      // DEB3(printk(KERN_DEBUG "i2c-pcf-epp.o: STAT port = 0x%x\n", inb(STAT)));
+      
+      // EPP write data cycle
+      outb(val | I2C_PCF_ENI, EDAT);
+    } else {
+      DEB3(printk(KERN_DEBUG "i2c-pcf-epp.o: Write control 0x%x\n", val));
+      // set A0 pin HIGH
+      outb(inb(CTRL) | PARPORT_CONTROL_INIT, CTRL);
+      outb(val, CTRL);
+    }
+  } else {
+    DEB3(printk(KERN_DEBUG "i2c-pcf-epp.o: Write data 0x%x\n", val));
+    // set A0 pin LO
+    outb(inb(CTRL) & ~PARPORT_CONTROL_INIT, CTRL);
+    // DEB3(printk(KERN_DEBUG "i2c-pcf-epp.o: CTRL port = 0x%x\n", inb(CTRL)));
+    // DEB3(printk(KERN_DEBUG "i2c-pcf-epp.o: STAT port = 0x%x\n", inb(STAT)));
+    outb(val, EDAT);
+  }
+}
+
+static int pcf_epp_getbyte(void *data, int ctl)
+{
+  int val;
+
+  if (ctl) {
+    // set A0 pin HIGH
+    outb(inb(CTRL) | PARPORT_CONTROL_INIT, CTRL);
+    val = inb(EDAT);
+    DEB3(printk(KERN_DEBUG "i2c-pcf-epp.o: Read control 0x%x\n", val));
+  } else {
+    // set A0 pin LOW
+    outb(inb(CTRL) & ~PARPORT_CONTROL_INIT, CTRL);
+    val = inb(EDAT);
+    DEB3(printk(KERN_DEBUG "i2c-pcf-epp.o: Read data 0x%x\n", val));
+  }
+  return (val);
+}
+
+static int pcf_epp_getown(void *data)
+{
+  return (gpe.pe_own);
+}
+
+
+static int pcf_epp_getclock(void *data)
+{
+  return (gpe.pe_clock);
+}
+
+#if 0
+static void pcf_epp_sleep(unsigned long timeout)
+{
+  schedule_timeout( timeout * HZ);
+}
+#endif
+
+static void pcf_epp_waitforpin(void) {
+  int timeout = 10;
+
+  if (gpe.pe_irq > 0) {
+    spin_lock_irq(&irq_driver_lock);
+    if (pcf_pending == 0) {
+      interruptible_sleep_on_timeout(&pcf_wait, timeout*HZ);
+      //udelay(100);
+    } else {
+      pcf_pending = 0;
+    }
+    spin_unlock_irq(&irq_driver_lock);
+  } else {
+    udelay(100);
+  }
+}
+
+static void pcf_epp_handler(int this_irq, void *dev_id, struct pt_regs *regs) {
+  pcf_pending = 1;
+  wake_up_interruptible(&pcf_wait);
+  DEB3(printk(KERN_DEBUG "i2c-pcf-epp.o: in interrupt handler.\n"));
+}
+
+
+static int pcf_epp_init(void *data)
+{
+  if (check_region(gpe.pe_base, 5) < 0 ) {
+    
+    printk(KERN_WARNING "Could not request port region with base 0x%x\n", gpe.pe_base);
+    return -ENODEV;
+  } else {
+    request_region(gpe.pe_base, 5, "i2c (EPP parallel port adapter)");
+  }
+
+  DEB3(printk(KERN_DEBUG "i2c-pcf-epp.o: init status port = 0x%x\n", inb(0x379)));
+  
+  if (gpe.pe_irq > 0) {
+    if (request_irq(gpe.pe_irq, pcf_epp_handler, 0, "PCF8584", 0) < 0) {
+      printk(KERN_NOTICE "i2c-pcf-epp.o: Request irq%d failed\n", gpe.pe_irq);
+      gpe.pe_irq = 0;
+    } else
+      disable_irq(gpe.pe_irq);
+      enable_irq(gpe.pe_irq);
+  }
+  // EPP mode initialize
+  // enable interrupt from nINTR pin
+  outb(inb(CTRL)|0x14, CTRL);
+  // clear ERROR bit of STAT
+  outb(inb(STAT)|0x01, STAT);
+  outb(inb(STAT)&~0x01,STAT);
+  
+  return 0;
+}
+
+/* ------------------------------------------------------------------------
+ * Encapsulate the above functions in the correct operations structure.
+ * This is only done when more than one hardware adapter is supported.
+ */
+static struct i2c_algo_pcf_data pcf_epp_data = {
+       .setpcf     = pcf_epp_setbyte,
+       .getpcf     = pcf_epp_getbyte,
+       .getown     = pcf_epp_getown,
+       .getclock   = pcf_epp_getclock,
+       .waitforpin = pcf_epp_waitforpin,
+       .udelay     = 80,
+       .mdelay     = 80,
+       .timeout    = HZ,
+};
+
+static struct i2c_adapter pcf_epp_ops = {
+       .owner          = THIS_MODULE,
+       .name           = "PCF8584 EPP adapter",
+       .id             = I2C_HW_P_LP,
+       .algo_data      = &pcf_epp_data,
+};
+
+static int __init i2c_pcfepp_init(void) 
+{
+  struct i2c_pcf_epp *pepp = &gpe;
+
+  printk(KERN_DEBUG "i2c-pcf-epp.o: i2c pcf8584-epp adapter module version %s (%s)\n", I2C_VERSION, I2C_DATE);
+  if (base == 0)
+    pepp->pe_base = DEFAULT_BASE;
+  else
+    pepp->pe_base = base;
+
+  if (irq == 0)
+    pepp->pe_irq = DEFAULT_IRQ;
+  else if (irq<0) {
+    // switch off irq
+    pepp->pe_irq=0;
+  } else {
+    pepp->pe_irq = irq;
+  }
+  if (clock == 0)
+    pepp->pe_clock = DEFAULT_CLOCK;
+  else
+    pepp->pe_clock = clock;
+
+  if (own == 0)
+    pepp->pe_own = DEFAULT_OWN;
+  else
+    pepp->pe_own = own;
+
+  pcf_epp_data.data = (void *)pepp;
+  init_waitqueue_head(&pcf_wait);
+  if (pcf_epp_init(pepp) == 0) {
+    int ret;
+    if ( (ret = i2c_pcf_add_bus(&pcf_epp_ops)) < 0) {
+      printk(KERN_WARNING "i2c_pcf_add_bus caused an error: %d\n",ret);
+      release_region(pepp->pe_base , 5);
+      return ret;
+    }
+  } else {
+    
+    return -ENODEV;
+  }
+  printk(KERN_DEBUG "i2c-pcf-epp.o: found device at %#x.\n", pepp->pe_base);
+  return 0;
+}
+
+static void __exit pcf_epp_exit(void)
+{
+  i2c_pcf_del_bus(&pcf_epp_ops);
+  if (gpe.pe_irq > 0) {
+    disable_irq(gpe.pe_irq);
+    free_irq(gpe.pe_irq, 0);
+  }
+  release_region(gpe.pe_base , 5);
+}
+
+MODULE_AUTHOR("Hans Berglund <hb@spacetec.no> \n modified by Ryosuke Tajima <rosk@jsk.t.u-tokyo.ac.jp>");
+MODULE_DESCRIPTION("I2C-Bus adapter routines for PCF8584 EPP parallel port adapter");
+MODULE_LICENSE("GPL");
+
+MODULE_PARM(base, "i");
+MODULE_PARM(irq, "i");
+MODULE_PARM(clock, "i");
+MODULE_PARM(own, "i");
+MODULE_PARM(i2c_debug, "i");
+
+module_init(i2c_pcfepp_init);
+module_exit(pcf_epp_exit);
diff -urN linux-2.4.24.org/drivers/i2c/i2c-philips-par.c linux-2.4.24/drivers/i2c/i2c-philips-par.c
--- linux-2.4.24.org/drivers/i2c/i2c-philips-par.c      2004-02-04 22:33:47.661973491 +0100
+++ linux-2.4.24/drivers/i2c/i2c-philips-par.c  2004-02-04 22:37:38.775910804 +0100
@@ -21,7 +21,7 @@
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
    Frodo Looijaard <frodol@dds.nl> */
 
-/* $Id$ */
+/* $Id$ */
 
 #include <linux/kernel.h>
 #include <linux/ioport.h>
@@ -29,14 +29,10 @@
 #include <linux/init.h>
 #include <linux/stddef.h>
 #include <linux/parport.h>
-
+#include <linux/slab.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-bit.h>
 
-#ifndef __exit
-#define __exit __init
-#endif
-
 static int type;
 
 struct i2c_par
@@ -130,59 +126,34 @@
                                     PARPORT_STATUS_BUSY) ? 0 : 1;
 }
 
-static int bit_lp_reg(struct i2c_client *client)
-{
-       return 0;
-}
-
-static int bit_lp_unreg(struct i2c_client *client)
-{
-       return 0;
-}
-
-static void bit_lp_inc_use(struct i2c_adapter *adap)
-{
-       MOD_INC_USE_COUNT;
-}
-
-static void bit_lp_dec_use(struct i2c_adapter *adap)
-{
-       MOD_DEC_USE_COUNT;
-}
-
 /* ------------------------------------------------------------------------
  * Encapsulate the above functions in the correct operations structure.
  * This is only done when more than one hardware adapter is supported.
  */
  
 static struct i2c_algo_bit_data bit_lp_data = {
-       NULL,
-       bit_lp_setsda,
-       bit_lp_setscl,
-       bit_lp_getsda,
-       bit_lp_getscl,
-       80, 80, 100,            /*      waits, timeout */
+       .setsda         = bit_lp_setsda,
+       .setscl         = bit_lp_setscl,
+       .getsda         = bit_lp_getsda,
+       .getscl         = bit_lp_getscl,
+       .udelay         = 80,
+       .mdelay         = 80,
+       .timeout        = HZ
 }; 
 
 static struct i2c_algo_bit_data bit_lp_data2 = {
-       NULL,
-       bit_lp_setsda2,
-       bit_lp_setscl2,
-       bit_lp_getsda2,
-       NULL,
-       80, 80, 100,            /*      waits, timeout */
+       .setsda         = bit_lp_setsda2,
+       .setscl         = bit_lp_setscl2,
+       .getsda         = bit_lp_getsda2,
+       .udelay         = 80,
+       .mdelay         = 80,
+       .timeout        = HZ
 }; 
 
 static struct i2c_adapter bit_lp_ops = {
-       "Philips Parallel port adapter",
-       I2C_HW_B_LP,
-       NULL,
-       NULL,
-       bit_lp_inc_use,
-       bit_lp_dec_use,
-       bit_lp_reg,
-
-       bit_lp_unreg,
+       .owner          = THIS_MODULE,
+       .name           = "Philips Parallel port adapter",
+       .id             = I2C_HW_B_LP,
 };
 
 static void i2c_parport_attach (struct parport *port)
@@ -202,6 +173,7 @@
                                                NULL);
        if (!adapter->pdev) {
                printk(KERN_ERR "i2c-philips-par: Unable to register with parport.\n");
+               kfree(adapter);
                return;
        }
 
@@ -211,7 +183,11 @@
        adapter->bit_lp_data.data = port;
 
        /* reset hardware to sane state */
-       parport_claim_or_block(adapter->pdev);
+       if (parport_claim_or_block(adapter->pdev) < 0 ) {
+               printk(KERN_ERR "i2c-philips-par: Could not claim parallel port.\n");
+               kfree(adapter);
+               return;
+       }
        adapter->bit_lp_data.setsda(port, 1);
        adapter->bit_lp_data.setscl(port, 1);
        parport_release(adapter->pdev);
@@ -257,7 +233,7 @@
        NULL
 };
 
-int __init i2c_bitlp_init(void)
+static int __init i2c_bitlp_init(void)
 {
        printk(KERN_INFO "i2c-philips-par.o: i2c Philips parallel port adapter module version %s (%s)\n", I2C_VERSION, I2C_DATE);
 
@@ -266,7 +242,7 @@
        return 0;
 }
 
-void __exit i2c_bitlp_exit(void)
+static void __exit i2c_bitlp_exit(void)
 {
        parport_unregister_driver(&i2c_driver);
 }
@@ -279,14 +255,5 @@
 
 MODULE_PARM(type, "i");
 
-#ifdef MODULE
-int init_module(void)
-{
-       return i2c_bitlp_init();
-}
-
-void cleanup_module(void)
-{
-       i2c_bitlp_exit();
-}
-#endif
+module_init(i2c_bitlp_init);
+module_exit(i2c_bitlp_exit);
diff -urN linux-2.4.24.org/drivers/i2c/i2c-pport.c linux-2.4.24/drivers/i2c/i2c-pport.c
--- linux-2.4.24.org/drivers/i2c/i2c-pport.c    1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.24/drivers/i2c/i2c-pport.c        2004-02-04 22:36:36.706820334 +0100
@@ -0,0 +1,205 @@
+/* ------------------------------------------------------------------------- */
+/* i2c-pport.c i2c-hw access  for primitive i2c par. port adapter           */
+/* ------------------------------------------------------------------------- */
+/*   Copyright (C) 2001    Daniel Smolik
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               */
+/* ------------------------------------------------------------------------- */
+
+/*
+       See doc/i2c-pport for instructions on wiring to the
+       parallel port connector.
+
+       Cut & paste :-)  based on Velleman K8000 driver by Simon G. Vogl
+*/
+
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/errno.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+#include <asm/io.h>
+
+
+#define DEFAULT_BASE 0x378
+static int base=0;
+static unsigned char PortData = 0;
+
+/* ----- global defines -----------------------------------------------        */
+#define DEB(x)         /* should be reasonable open, close &c.         */
+#define DEB2(x)        /* low level debugging - very slow              */
+#define DEBE(x)        x       /* error messages                               */
+#define DEBINIT(x) x   /* detection status messages                    */
+
+/* --- Convenience defines for the parallel port:                      */
+#define BASE   (unsigned int)(data)
+#define DATA   BASE                    /* Centronics data port         */
+#define STAT   (BASE+1)                /* Centronics status port       */
+#define CTRL   (BASE+2)                /* Centronics control port      */
+
+/* we will use SDA  - Auto Linefeed(14)   bit 1  POUT   */
+/* we will use SCL - Initialize printer(16)    BUSY bit 2*/
+
+#define  SET_SCL    | 0x04
+#define  CLR_SCL    & 0xFB
+
+
+
+
+#define  SET_SDA    & 0x04
+#define  CLR_SDA    | 0x02
+
+
+/* ----- local functions ----------------------------------------------        */
+
+
+static void bit_pport_setscl(void *data, int state)
+{
+       if (state) {
+               //high
+               PortData = PortData SET_SCL;
+       } else {
+               //low
+               PortData = PortData CLR_SCL; 
+       }
+       outb(PortData, CTRL);
+}
+
+static void bit_pport_setsda(void *data, int state)
+{
+       if (state) {
+               
+               PortData = PortData SET_SDA;
+       } else {
+
+               PortData = PortData CLR_SDA;
+       }
+       outb(PortData, CTRL);
+} 
+
+static int bit_pport_getscl(void *data)
+{
+
+       return ( 4 == ( (inb_p(CTRL)) & 0x04 ) );
+}
+
+static int bit_pport_getsda(void *data)
+{
+       return ( 0 == ( (inb_p(CTRL)) & 0x02 ) );
+}
+
+static int bit_pport_init(void)
+{
+       if (!request_region((base+2),1, "i2c (PPORT adapter)")) {
+               return -ENODEV; 
+       } else {
+               /* test for PPORT adap.         */
+       
+
+               PortData=inb(base+2);
+               PortData= (PortData SET_SDA) SET_SCL;
+               outb(PortData,base+2);                          
+
+               if (!(inb(base+2) | 0x06)) {    /* SDA and SCL will be high     */
+                       DEBINIT(printk("i2c-pport.o: SDA and SCL was low.\n"));
+                       return -ENODEV;
+               } else {
+               
+                       /*SCL high and SDA low*/
+                       PortData = PortData SET_SCL CLR_SDA;
+                       outb(PortData,base+2);  
+                       schedule_timeout(400);
+                       if ( !(inb(base+2) | 0x4) ) {
+                               //outb(0x04,base+2);
+                               DEBINIT(printk("i2c-port.o: SDA was high.\n"));
+                               return -ENODEV;
+                       }
+               }
+               bit_pport_setsda((void*)base,1);
+               bit_pport_setscl((void*)base,1);
+       }
+       return 0;
+}
+
+
+/* ------------------------------------------------------------------------
+ * Encapsulate the above functions in the correct operations structure.
+ * This is only done when more than one hardware adapter is supported.
+ */
+static struct i2c_algo_bit_data bit_pport_data = {
+       .setsda         = bit_pport_setsda,
+       .setscl         = bit_pport_setscl,
+       .getsda         = bit_pport_getsda,
+       .getscl         = bit_pport_getscl,
+       .udelay         = 40,
+       .mdelay         = 80,
+       .timeout        = HZ
+};
+
+static struct i2c_adapter bit_pport_ops = {
+       .owner          = THIS_MODULE,
+       .name           = "Primitive Parallel port adaptor",
+       .id             = I2C_HW_B_PPORT,
+       .algo_data      = &bit_pport_data,
+};
+
+static int __init i2c_bitpport_init(void)
+{
+       printk("i2c-pport.o: i2c Primitive parallel port adapter module version %s (%s)\n", I2C_VERSION, I2C_DATE);
+
+       if (base==0) {
+               /* probe some values */
+               base=DEFAULT_BASE;
+               bit_pport_data.data=(void*)DEFAULT_BASE;
+               if (bit_pport_init()==0) {
+                       if(i2c_bit_add_bus(&bit_pport_ops) < 0)
+                               return -ENODEV;
+               } else {
+                       return -ENODEV;
+               }
+       } else {
+               bit_pport_data.data=(void*)base;
+               if (bit_pport_init()==0) {
+                       if(i2c_bit_add_bus(&bit_pport_ops) < 0)
+                               return -ENODEV;
+               } else {
+                       return -ENODEV;
+               }
+       }
+       printk("i2c-pport.o: found device at %#x.\n",base);
+       return 0;
+}
+
+static void __exit i2c_bitpport_exit(void)
+{
+       i2c_bit_del_bus(&bit_pport_ops);
+       release_region((base+2),1);
+}
+
+EXPORT_NO_SYMBOLS;
+
+MODULE_AUTHOR("Daniel Smolik <marvin@sitour.cz>");
+MODULE_DESCRIPTION("I2C-Bus adapter routines for Primitive parallel port adapter");
+MODULE_LICENSE("GPL");
+
+MODULE_PARM(base, "i");
+
+module_init(i2c_bitpport_init);
+module_exit(i2c_bitpport_exit);
diff -urN linux-2.4.24.org/drivers/i2c/i2c-proc.c linux-2.4.24/drivers/i2c/i2c-proc.c
--- linux-2.4.24.org/drivers/i2c/i2c-proc.c     2004-02-04 22:33:47.507005716 +0100
+++ linux-2.4.24/drivers/i2c/i2c-proc.c 2004-02-04 22:36:36.711819295 +0100
@@ -29,23 +29,15 @@
 #include <linux/ctype.h>
 #include <linux/sysctl.h>
 #include <linux/proc_fs.h>
+#include <linux/init.h>
 #include <linux/ioport.h>
-#include <asm/uaccess.h>
-
 #include <linux/i2c.h>
 #include <linux/i2c-proc.h>
+#include <asm/uaccess.h>
 
-#include <linux/init.h>
-
-#ifndef THIS_MODULE
-#define THIS_MODULE NULL
-#endif
-
-static int i2c_create_name(char **name, const char *prefix,
-                              struct i2c_adapter *adapter, int addr);
 static int i2c_parse_reals(int *nrels, void *buffer, int bufsize,
                               long *results, int magnitude);
-static int i2c_write_reals(int nrels, void *buffer, int *bufsize,
+static int i2c_write_reals(int nrels, void *buffer, size_t *bufsize,
                               long *results, int magnitude);
 static int i2c_proc_chips(ctl_table * ctl, int write,
                              struct file *filp, void *buffer,
@@ -55,22 +47,10 @@
                                void *newval, size_t newlen,
                                void **context);
 
-int __init sensors_init(void);
-
 #define SENSORS_ENTRY_MAX 20
 static struct ctl_table_header *i2c_entries[SENSORS_ENTRY_MAX];
 
 static struct i2c_client *i2c_clients[SENSORS_ENTRY_MAX];
-static unsigned short i2c_inodes[SENSORS_ENTRY_MAX];
-
-static ctl_table sysctl_table[] = {
-       {CTL_DEV, "dev", NULL, 0, 0555},
-       {0},
-       {DEV_SENSORS, "sensors", NULL, 0, 0555},
-       {0},
-       {0, NULL, NULL, 0, 0555},
-       {0}
-};
 
 static ctl_table i2c_proc_dev_sensors[] = {
        {SENSORS_CHIPS, "chips", NULL, 0, 0644, NULL, &i2c_proc_chips,
@@ -91,31 +71,45 @@
 
 
 static struct ctl_table_header *i2c_proc_header;
-static int i2c_initialized;
 
 /* This returns a nice name for a new directory; for example lm78-isa-0310
    (for a LM78 chip on the ISA bus at port 0x310), or lm75-i2c-3-4e (for
    a LM75 chip on the third i2c bus at address 0x4e).  
    name is allocated first. */
-int i2c_create_name(char **name, const char *prefix,
-                       struct i2c_adapter *adapter, int addr)
+static char *generate_name(struct i2c_client *client, const char *prefix)
 {
-       char name_buffer[50];
-       int id;
-       if (i2c_is_isa_adapter(adapter))
+       struct i2c_adapter *adapter = client->adapter;
+       int addr = client->addr;
+       char name_buffer[50], *name;
+
+       if (i2c_is_isa_adapter(adapter)) {
                sprintf(name_buffer, "%s-isa-%04x", prefix, addr);
-       else {
-               if ((id = i2c_adapter_id(adapter)) < 0)
-                       return -ENOENT;
+       } else if (adapter->algo->smbus_xfer || adapter->algo->master_xfer) {
+               int id = i2c_adapter_id(adapter);
+               if (id < 0)
+                       return ERR_PTR(-ENOENT);
                sprintf(name_buffer, "%s-i2c-%d-%02x", prefix, id, addr);
+       } else {        /* dummy adapter, generate prefix */
+               int end, i;
+
+               sprintf(name_buffer, "%s-", prefix);
+               end = strlen(name_buffer);
+
+               for (i = 0; i < 32; i++) {
+                       if (adapter->algo->name[i] == ' ')
+                               break;
+                       name_buffer[end++] = tolower(adapter->algo->name[i]);
+               }
+
+               name_buffer[end] = 0;
+               sprintf(name_buffer + end, "-%04x", addr);
        }
-       *name = kmalloc(strlen(name_buffer) + 1, GFP_KERNEL);
-       if (!*name) {
-               printk (KERN_WARNING "i2c_create_name: not enough memory\n");
-               return -ENOMEM;
-       }
-       strcpy(*name, name_buffer);
-       return 0;
+
+       name = kmalloc(strlen(name_buffer) + 1, GFP_KERNEL);
+       if (!name)
+               return ERR_PTR(-ENOMEM);
+       strcpy(name, name_buffer);
+       return name;
 }
 
 /* This rather complex function must be called when you want to add an entry
@@ -124,139 +118,91 @@
    ctl_template should be a template of the newly created directory. It is
    copied in memory. The extra2 field of each file is set to point to client.
    If any driver wants subdirectories within the newly created directory,
-   this function must be updated! 
-   controlling_mod is the controlling module. It should usually be
-   THIS_MODULE when calling. Note that this symbol is not defined in
-   kernels before 2.3.13; define it to NULL in that case. We will not use it
-   for anything older than 2.3.27 anyway. */
+   this function must be updated!  */
 int i2c_register_entry(struct i2c_client *client, const char *prefix,
-                          ctl_table * ctl_template,
-                          struct module *controlling_mod)
+                      struct ctl_table *ctl_template)
 {
-       int i, res, len, id;
-       ctl_table *new_table;
-       char *name;
-       struct ctl_table_header *new_header;
+       struct { struct ctl_table root[2], dev[2], sensors[2]; } *tbl;
+       struct ctl_table_header *hdr;
+       struct ctl_table *tmp, *leaf;
+       const char *name;
+       int id, len = 0;
 
-       if ((res = i2c_create_name(&name, prefix, client->adapter,
-                                      client->addr))) return res;
+       name = generate_name(client, prefix);
+       if (IS_ERR(name))
+               return PTR_ERR(name);
 
-       for (id = 0; id < SENSORS_ENTRY_MAX; id++)
-               if (!i2c_entries[id]) {
-                       break;
-               }
-       if (id == SENSORS_ENTRY_MAX) {
-               kfree(name);
-               return -ENOMEM;
+       for (id = 0; id < SENSORS_ENTRY_MAX; id++) {
+               if (!i2c_entries[id])
+                       goto free_slot;
        }
-       id += 256;
 
-       len = 0;
+       goto out_free_name;
+
+ free_slot:
        while (ctl_template[len].procname)
                len++;
-       len += 7;
-       if (!(new_table = kmalloc(sizeof(ctl_table) * len, GFP_KERNEL))) {
-               kfree(name);
-               return -ENOMEM;
-       }
-
-       memcpy(new_table, sysctl_table, 6 * sizeof(ctl_table));
-       new_table[0].child = &new_table[2];
-       new_table[2].child = &new_table[4];
-       new_table[4].child = &new_table[6];
-       new_table[4].procname = name;
-       new_table[4].ctl_name = id;
-       memcpy(new_table + 6, ctl_template, (len - 6) * sizeof(ctl_table));
-       for (i = 6; i < len; i++)
-               new_table[i].extra2 = client;
-
-       if (!(new_header = register_sysctl_table(new_table, 0))) {
-               kfree(new_table);
-               kfree(name);
-               return -ENOMEM;
-       }
-
-       i2c_entries[id - 256] = new_header;
-
-       i2c_clients[id - 256] = client;
-#ifdef DEBUG
-       if (!new_header || !new_header->ctl_table ||
-           !new_header->ctl_table->child ||
-           !new_header->ctl_table->child->child ||
-           !new_header->ctl_table->child->child->de) {
-               printk
-                   ("i2c-proc.o: NULL pointer when trying to install fill_inode fix!\n");
-               return id;
-       }
-#endif                         /* DEBUG */
-       i2c_inodes[id - 256] =
-           new_header->ctl_table->child->child->de->low_ino;
-       new_header->ctl_table->child->child->de->owner = controlling_mod;
-
-       return id;
+       tbl = kmalloc(sizeof(*tbl) + sizeof(ctl_table) * (len + 1), 
+                                 GFP_KERNEL);
+       if (!tbl)
+               goto out_free_name;
+       memset(tbl, 0, sizeof(*tbl));
+
+       /* The client sysctls */
+       leaf = (struct ctl_table *) (tbl + 1);
+       memcpy(leaf, ctl_template, sizeof(ctl_table) * (len+1));
+       for (tmp = leaf; tmp->ctl_name; tmp++)
+               tmp->extra2 = client;
+
+       tbl->sensors->ctl_name = id+256;
+       tbl->sensors->procname = name;
+       tbl->sensors->mode = 0555;
+       tbl->sensors->child = leaf;
+
+       tbl->dev->ctl_name = DEV_SENSORS;
+       tbl->dev->procname = "sensors";
+       tbl->dev->mode = 0555;
+       tbl->dev->child = tbl->sensors;
+
+       tbl->root->ctl_name = CTL_DEV;
+       tbl->root->procname = "dev";
+       tbl->root->mode = 0555;
+       tbl->root->child = tbl->dev;
+
+       hdr = register_sysctl_table(tbl->root, 0);
+       if (!hdr)
+               goto out_free_tbl;
+
+       i2c_entries[id] = hdr;
+       i2c_clients[id] = client;
+
+       return (id + 256);      /* XXX(hch) why?? */
+
+ out_free_tbl:
+       kfree(tbl);
+ out_free_name:
+       kfree(name);
+       return -ENOMEM;
 }
 
 void i2c_deregister_entry(int id)
 {
-       ctl_table *table;
-       char *temp;
        id -= 256;
-       if (i2c_entries[id]) {
-               table = i2c_entries[id]->ctl_table;
-               unregister_sysctl_table(i2c_entries[id]);
-               /* 2-step kfree needed to keep gcc happy about const points */
-               (const char *) temp = table[4].procname;
-               kfree(temp);
-               kfree(table);
-               i2c_entries[id] = NULL;
-               i2c_clients[id] = NULL;
-       }
-}
 
-/* Monitor access for /proc/sys/dev/sensors; make unloading i2c-proc.o 
-   impossible if some process still uses it or some file in it */
-void i2c_fill_inode(struct inode *inode, int fill)
-{
-       if (fill)
-               MOD_INC_USE_COUNT;
-       else
-               MOD_DEC_USE_COUNT;
-}
-
-/* Monitor access for /proc/sys/dev/sensors/ directories; make unloading
-   the corresponding module impossible if some process still uses it or
-   some file in it */
-void i2c_dir_fill_inode(struct inode *inode, int fill)
-{
-       int i;
-       struct i2c_client *client;
+       if (i2c_entries[id]) {
+               struct ctl_table_header *hdr = i2c_entries[id];
+               struct ctl_table *tbl = hdr->ctl_table;
 
-#ifdef DEBUG
-       if (!inode) {
-               printk("i2c-proc.o: Warning: inode NULL in fill_inode()\n");
-               return;
+               unregister_sysctl_table(hdr);
+               kfree(tbl->child->child->procname);
+               kfree(tbl); /* actually the whole anonymous struct */
        }
-#endif                         /* def DEBUG */
 
-       for (i = 0; i < SENSORS_ENTRY_MAX; i++)
-               if (i2c_clients[i]
-                   && (i2c_inodes[i] == inode->i_ino)) break;
-#ifdef DEBUG
-       if (i == SENSORS_ENTRY_MAX) {
-               printk
-                   ("i2c-proc.o: Warning: inode (%ld) not found in fill_inode()\n",
-                    inode->i_ino);
-               return;
-       }
-#endif                         /* def DEBUG */
-       client = i2c_clients[i];
-       if (fill)
-               client->driver->inc_use(client);
-       else
-               client->driver->dec_use(client);
+       i2c_entries[id] = NULL;
+       i2c_clients[id] = NULL;
 }
 
-int i2c_proc_chips(ctl_table * ctl, int write, struct file *filp,
+static int i2c_proc_chips(ctl_table * ctl, int write, struct file *filp,
                       void *buffer, size_t * lenp)
 {
        char BUF[SENSORS_PREFIX_MAX + 30];
@@ -294,7 +240,7 @@
        return 0;
 }
 
-int i2c_sysctl_chips(ctl_table * table, int *name, int nlen,
+static int i2c_sysctl_chips(ctl_table * table, int *name, int nlen,
                         void *oldval, size_t * oldlenp, void *newval,
                         size_t newlen, void **context)
 {
@@ -456,7 +402,7 @@
    WARNING! This is tricky code. I have tested it, but there may still be
             hidden bugs in it, even leading to crashes and things!
 */
-int i2c_parse_reals(int *nrels, void *buffer, int bufsize,
+static int i2c_parse_reals(int *nrels, void *buffer, int bufsize,
                         long *results, int magnitude)
 {
        int maxels, min, mag;
@@ -557,7 +503,7 @@
        return 0;
 }
 
-int i2c_write_reals(int nrels, void *buffer, int *bufsize,
+static int i2c_write_reals(int nrels, void *buffer, size_t *bufsize,
                         long *results, int magnitude)
 {
 #define BUFLEN 20
@@ -646,6 +592,7 @@
                                        I2C_FUNC_SMBUS_QUICK)) return -1;
 
        for (addr = 0x00; addr <= (is_isa ? 0xffff : 0x7f); addr++) {
+               /* XXX: WTF is going on here??? */
                if ((is_isa && check_region(addr, 1)) ||
                    (!is_isa && i2c_check_addr(adapter, addr)))
                        continue;
@@ -846,46 +793,33 @@
        return 0;
 }
 
-int __init sensors_init(void)
+static int __init i2c_proc_init(void)
 {
        printk(KERN_INFO "i2c-proc.o version %s (%s)\n", I2C_VERSION, I2C_DATE);
-       i2c_initialized = 0;
        if (!
            (i2c_proc_header =
-            register_sysctl_table(i2c_proc, 0))) return -ENOMEM;
+            register_sysctl_table(i2c_proc, 0))) {
+               printk(KERN_ERR "i2c-proc.o: error: sysctl interface not supported by kernel!\n");
+               return -EPERM;
+       }
        i2c_proc_header->ctl_table->child->de->owner = THIS_MODULE;
-       i2c_initialized++;
        return 0;
 }
 
+static void __exit i2c_proc_exit(void)
+{
+       unregister_sysctl_table(i2c_proc_header);
+}
+
+EXPORT_SYMBOL(i2c_register_entry);
 EXPORT_SYMBOL(i2c_deregister_entry);
-EXPORT_SYMBOL(i2c_detect);
 EXPORT_SYMBOL(i2c_proc_real);
-EXPORT_SYMBOL(i2c_register_entry);
 EXPORT_SYMBOL(i2c_sysctl_real);
-
-#ifdef MODULE
+EXPORT_SYMBOL(i2c_detect);
 
 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>");
 MODULE_DESCRIPTION("i2c-proc driver");
 MODULE_LICENSE("GPL");
 
-int i2c_cleanup(void)
-{
-       if (i2c_initialized >= 1) {
-               unregister_sysctl_table(i2c_proc_header);
-               i2c_initialized--;
-       }
-       return 0;
-}
-
-int init_module(void)
-{
-       return sensors_init();
-}
-
-int cleanup_module(void)
-{
-       return i2c_cleanup();
-}
-#endif                         /* MODULE */
+module_init(i2c_proc_init);
+module_exit(i2c_proc_exit);
diff -urN linux-2.4.24.org/drivers/i2c/i2c-rpx.c linux-2.4.24/drivers/i2c/i2c-rpx.c
--- linux-2.4.24.org/drivers/i2c/i2c-rpx.c      1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.24/drivers/i2c/i2c-rpx.c  2004-02-04 22:36:36.715818463 +0100
@@ -0,0 +1,101 @@
+/*
+ * Embedded Planet RPX Lite MPC8xx CPM I2C interface.
+ * Copyright (c) 1999 Dan Malek (dmalek@jlc.net).
+ *
+ * moved into proper i2c interface;
+ * Brad Parker (brad@heeltoe.com)
+ *
+ * RPX lite specific parts of the i2c interface
+ * Update:  There actually isn't anything RPXLite-specific about this module.
+ * This should work for most any 8xx board.  The console messages have been 
+ * changed to eliminate RPXLite references.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/stddef.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-8xx.h>
+#include <asm/mpc8xx.h>
+#include <asm/commproc.h>
+
+
+static void
+rpx_iic_init(struct i2c_algo_8xx_data *data)
+{
+       volatile cpm8xx_t *cp;
+       volatile immap_t *immap;
+
+       cp = cpmp;      /* Get pointer to Communication Processor */
+       immap = (immap_t *)IMAP_ADDR;   /* and to internal registers */
+
+       data->iip = (iic_t *)&cp->cp_dparam[PROFF_IIC];
+
+       /* Check for and use a microcode relocation patch.
+       */
+       if ((data->reloc = data->iip->iic_rpbase))
+               data->iip = (iic_t *)&cp->cp_dpmem[data->iip->iic_rpbase];
+               
+       data->i2c = (i2c8xx_t *)&(immap->im_i2c);
+       data->cp = cp;
+
+       /* Initialize Port B IIC pins.
+       */
+       cp->cp_pbpar |= 0x00000030;
+       cp->cp_pbdir |= 0x00000030;
+       cp->cp_pbodr |= 0x00000030;
+
+       /* Allocate space for two transmit and two receive buffer
+        * descriptors in the DP ram.
+        */
+       data->dp_addr = m8xx_cpm_dpalloc(sizeof(cbd_t) * 4);
+
+       /* ptr to i2c area */
+       data->i2c = (i2c8xx_t *)&(((immap_t *)IMAP_ADDR)->im_i2c);
+}
+
+static int rpx_install_isr(int irq, void (*func)(void *, void *), void *data)
+{
+       /* install interrupt handler */
+       cpm_install_handler(irq, (void (*)(void *, struct pt_regs *)) func, data);
+
+       return 0;
+}
+
+static struct i2c_algo_8xx_data rpx_data = {
+       .setisr = rpx_install_isr
+};
+
+static struct i2c_adapter rpx_ops = {
+       .owner          = THIS_MODULE,
+       .name           = "m8xx",
+       .id             = I2C_HW_MPC8XX_EPON,
+       .algo_data      = &rpx_data,
+};
+
+static int __init i2c_rpx_init(void)
+{
+       printk("i2c-rpx.o: i2c MPC8xx module version %s (%s)\n", I2C_VERSION, I2C_DATE);
+
+       /* reset hardware to sane state */
+       rpx_iic_init(&rpx_data);
+
+       if (i2c_8xx_add_bus(&rpx_ops) < 0) {
+               printk("i2c-rpx: Unable to register with I2C\n");
+               return -ENODEV;
+       }
+
+       return 0;
+}
+
+static void __exit i2c_rpx_exit(void)
+{
+       i2c_8xx_del_bus(&rpx_ops);
+}
+
+MODULE_AUTHOR("Dan Malek <dmalek@jlc.net>");
+MODULE_DESCRIPTION("I2C-Bus adapter routines for MPC8xx boards");
+
+module_init(i2c_rpx_init);
+module_exit(i2c_rpx_exit);
diff -urN linux-2.4.24.org/drivers/i2c/i2c-velleman.c linux-2.4.24/drivers/i2c/i2c-velleman.c
--- linux-2.4.24.org/drivers/i2c/i2c-velleman.c 2004-02-04 22:33:47.695966422 +0100
+++ linux-2.4.24/drivers/i2c/i2c-velleman.c     2004-02-04 22:36:36.718817839 +0100
@@ -18,18 +18,18 @@
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               */
 /* ------------------------------------------------------------------------- */
 
-/* $Id$ */
+/* $Id$ */
 
 #include <linux/kernel.h>
 #include <linux/ioport.h>
 #include <linux/module.h>
 #include <linux/init.h>
-#include <linux/string.h>  /* for 2.0 kernels to get NULL   */
-#include <asm/errno.h>     /* for 2.0 kernels to get ENODEV */
-#include <asm/io.h>
-
+#include <linux/errno.h>
+#include <linux/delay.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-bit.h>
+#include <asm/io.h>
+#include <asm/param.h> /* for HZ */
 
 /* ----- global defines -----------------------------------------------        */
 #define DEB(x)         /* should be reasonable open, close &c.         */
@@ -90,75 +90,38 @@
 
 static int bit_velle_init(void)
 {
-       if (check_region(base,(base == 0x3bc)? 3 : 8) < 0 ) {
-               DEBE(printk("i2c-velleman.o: Port %#x already in use.\n",
-                    base));
+       if (!request_region(base, (base == 0x3bc) ? 3 : 8, 
+                       "i2c (Vellemann adapter)"))
                return -ENODEV;
-       } else {
-               request_region(base, (base == 0x3bc)? 3 : 8, 
-                       "i2c (Vellemann adapter)");
-               bit_velle_setsda((void*)base,1);
-               bit_velle_setscl((void*)base,1);
-       }
-       return 0;
-}
 
-static void __exit bit_velle_exit(void)
-{      
-       release_region( base , (base == 0x3bc)? 3 : 8 );
-}
-
-
-static int bit_velle_reg(struct i2c_client *client)
-{
-       return 0;
-}
-
-static int bit_velle_unreg(struct i2c_client *client)
-{
+       bit_velle_setsda((void*)base,1);
+       bit_velle_setscl((void*)base,1);
        return 0;
 }
 
-static void bit_velle_inc_use(struct i2c_adapter *adap)
-{
-#ifdef MODULE
-       MOD_INC_USE_COUNT;
-#endif
-}
-
-static void bit_velle_dec_use(struct i2c_adapter *adap)
-{
-#ifdef MODULE
-       MOD_DEC_USE_COUNT;
-#endif
-}
-
 /* ------------------------------------------------------------------------
  * Encapsulate the above functions in the correct operations structure.
  * This is only done when more than one hardware adapter is supported.
  */
 
 static struct i2c_algo_bit_data bit_velle_data = {
-       NULL,
-       bit_velle_setsda,
-       bit_velle_setscl,
-       bit_velle_getsda,
-       bit_velle_getscl,
-       10, 10, 100,            /*      waits, timeout */
+       .setsda         = bit_velle_setsda,
+       .setscl         = bit_velle_setscl,
+       .getsda         = bit_velle_getsda,
+       .getscl         = bit_velle_getscl,
+       .udelay         = 10,
+       .mdelay         = 10,
+       .timeout        = HZ
 };
 
 static struct i2c_adapter bit_velle_ops = {
-       "Velleman K8000",
-       I2C_HW_B_VELLE,
-       NULL,
-       &bit_velle_data,
-       bit_velle_inc_use,
-       bit_velle_dec_use,
-       bit_velle_reg,
-       bit_velle_unreg,
+       .owner          = THIS_MODULE,
+       .name           = "Velleman K8000",
+       .id             = I2C_HW_B_VELLE,
+       .algo_data      = &bit_velle_data,
 };
 
-int __init  i2c_bitvelle_init(void)
+static int __init i2c_bitvelle_init(void)
 {
        printk(KERN_INFO "i2c-velleman.o: i2c Velleman K8000 adapter module version %s (%s)\n", I2C_VERSION, I2C_DATE);
        if (base==0) {
@@ -184,24 +147,19 @@
        return 0;
 }
 
+static void __exit i2c_bitvelle_exit(void)
+{      
+       i2c_bit_del_bus(&bit_velle_ops);
+       release_region(base, (base == 0x3bc) ? 3 : 8);
+}
+
 EXPORT_NO_SYMBOLS;
 
-#ifdef MODULE
 MODULE_AUTHOR("Simon G. Vogl <simon@tk.uni-linz.ac.at>");
 MODULE_DESCRIPTION("I2C-Bus adapter routines for Velleman K8000 adapter");
 MODULE_LICENSE("GPL");
 
 MODULE_PARM(base, "i");
 
-int init_module(void) 
-{
-       return i2c_bitvelle_init();
-}
-
-void cleanup_module(void) 
-{
-       i2c_bit_del_bus(&bit_velle_ops);
-       bit_velle_exit();
-}
-
-#endif
+module_init(i2c_bitvelle_init);
+module_exit(i2c_bitvelle_exit);
diff -urN linux-2.4.24.org/drivers/i2c/scx200_acb.c linux-2.4.24/drivers/i2c/scx200_acb.c
--- linux-2.4.24.org/drivers/i2c/scx200_acb.c   2004-02-04 22:33:47.486010082 +0100
+++ linux-2.4.24/drivers/i2c/scx200_acb.c       2004-02-04 22:36:36.724816591 +0100
@@ -408,16 +408,6 @@
        return 0;
 }
 
-static void scx200_acb_inc_use(struct i2c_adapter *adapter)
-{
-       MOD_INC_USE_COUNT;
-}
-
-static void scx200_acb_dec_use(struct i2c_adapter *adapter)
-{
-       MOD_DEC_USE_COUNT;
-}
-
 /* For now, we only handle combined mode (smbus) */
 static struct i2c_algorithm scx200_acb_algorithm = {
        name:           "NatSemi SCx200 ACCESS.bus",
@@ -482,8 +472,6 @@
        sprintf(adapter->name, "SCx200 ACB%d", index);
        adapter->id = I2C_ALGO_SMBUS;
        adapter->algo = &scx200_acb_algorithm;
-       adapter->inc_use = scx200_acb_inc_use;
-       adapter->dec_use = scx200_acb_dec_use;
        adapter->client_register = scx200_acb_reg;
        adapter->client_unregister = scx200_acb_unreg;
 
diff -urN linux-2.4.24.org/drivers/i2c/scx200_i2c.c linux-2.4.24/drivers/i2c/scx200_i2c.c
--- linux-2.4.24.org/drivers/i2c/scx200_i2c.c   2004-02-04 22:33:47.451017359 +0100
+++ linux-2.4.24/drivers/i2c/scx200_i2c.c       2004-02-04 22:36:36.728815760 +0100
@@ -76,16 +76,6 @@
        return 0;
 }
 
-static void scx200_i2c_inc_use(struct i2c_adapter *adap)
-{
-       MOD_INC_USE_COUNT;
-}
-
-static void scx200_i2c_dec_use(struct i2c_adapter *adap)
-{
-       MOD_DEC_USE_COUNT;
-}
-
 /* ------------------------------------------------------------------------
  * Encapsulate the above functions in the correct operations structure.
  * This is only done when more than one hardware adapter is supported.
@@ -104,8 +94,6 @@
        .name              = "NatSemi SCx200 I2C",
        .id                = I2C_HW_B_VELLE,
        .algo_data         = &scx200_i2c_data,
-       .inc_use           = scx200_i2c_inc_use,
-       .dec_use           = scx200_i2c_dec_use,
        .client_register   = scx200_i2c_reg,
        .client_unregister = scx200_i2c_unreg,
 };
diff -urN linux-2.4.24.org/drivers/media/video/saa5249.c linux-2.4.24/drivers/media/video/saa5249.c
--- linux-2.4.24.org/drivers/media/video/saa5249.c      2004-02-04 22:33:53.966662445 +0100
+++ linux-2.4.24/drivers/media/video/saa5249.c  2004-02-04 22:36:37.042750465 +0100
@@ -258,12 +258,12 @@
 
 static struct i2c_driver i2c_driver_videotext = 
 {
-       IF_NAME,                /* name */
-       I2C_DRIVERID_SAA5249, /* in i2c.h */
-       I2C_DF_NOTIFY,
-       saa5249_probe,
-       saa5249_detach,
-       saa5249_command
+       .name = IF_NAME,                /* name */
+       .id = I2C_DRIVERID_SAA5249, /* in i2c.h */
+       .flags = I2C_DF_NOTIFY,
+       .attach_adapter = saa5249_probe,
+       .detach_client = saa5249_detach,
+       .command = saa5249_command
 };
 
 static struct i2c_client client_template = {
diff -urN linux-2.4.24.org/drivers/media/video/tuner-3036.c linux-2.4.24/drivers/media/video/tuner-3036.c
--- linux-2.4.24.org/drivers/media/video/tuner-3036.c   2004-02-04 22:33:54.024650387 +0100
+++ linux-2.4.24/drivers/media/video/tuner-3036.c       2004-02-04 22:36:37.049749010 +0100
@@ -185,12 +185,12 @@
 static struct i2c_driver 
 i2c_driver_tuner = 
 {
-       "sab3036",              /* name       */
-       I2C_DRIVERID_SAB3036,   /* ID         */
-        I2C_DF_NOTIFY,
-       tuner_probe,
-       tuner_detach,
-       tuner_command
+       .name = "sab3036",              /* name       */
+       .id = I2C_DRIVERID_SAB3036,     /* ID         */
+        .flags = I2C_DF_NOTIFY,
+       .attach_adapter = tuner_probe,
+       .detach_client = tuner_detach,
+       .command = tuner_command
 };
 
 static struct i2c_client client_template =
diff -urN linux-2.4.24.org/drivers/video/matrox/i2c-matroxfb.c linux-2.4.24/drivers/video/matrox/i2c-matroxfb.c
--- linux-2.4.24.org/drivers/video/matrox/i2c-matroxfb.c        2004-02-04 22:33:29.409768997 +0100
+++ linux-2.4.24/drivers/video/matrox/i2c-matroxfb.c    2004-02-04 22:36:37.057747346 +0100
@@ -87,19 +87,9 @@
        return (matroxfb_read_gpio(b->minfo) & b->mask.clock) ? 1 : 0;
 }
 
-static void matroxfb_dh_inc_use(struct i2c_adapter* dummy) {
-       MOD_INC_USE_COUNT;
-}
-
-static void matroxfb_dh_dec_use(struct i2c_adapter* dummy) {
-       MOD_DEC_USE_COUNT;
-}
-
 static struct i2c_adapter matrox_i2c_adapter_template =
 {
        .id =           I2C_HW_B_G400,
-       .inc_use =      matroxfb_dh_inc_use,
-       .dec_use =      matroxfb_dh_dec_use,
 };
 
 static struct i2c_algo_bit_data matrox_i2c_algo_template =
diff -urN linux-2.4.24.org/drivers/video/matrox/matroxfb_maven.c linux-2.4.24/drivers/video/matrox/matroxfb_maven.c
--- linux-2.4.24.org/drivers/video/matrox/matroxfb_maven.c      2004-02-04 22:33:29.237804756 +0100
+++ linux-2.4.24/drivers/video/matrox/matroxfb_maven.c  2004-02-04 22:36:37.061746514 +0100
@@ -1246,14 +1246,6 @@
 static unsigned short normal_i2c_range[] = { MAVEN_I2CID, MAVEN_I2CID, I2C_CLIENT_END };
 I2C_CLIENT_INSMOD;
 
-static void maven_inc_use(struct i2c_client* clnt) {
-       MOD_INC_USE_COUNT;
-}
-
-static void maven_dec_use(struct i2c_client* clnt) {
-       MOD_DEC_USE_COUNT;
-}
-
 static struct i2c_driver maven_driver;
 
 static int maven_detect_client(struct i2c_adapter* adapter, int address, unsigned short flags,
@@ -1320,14 +1312,12 @@
 static int maven_driver_registered = 0;
 
 static struct i2c_driver maven_driver={
-       "maven",
-       I2C_DRIVERID_MGATVO,
-       I2C_DF_NOTIFY,
-       maven_attach_adapter,
-       maven_detach_client,
-       maven_command,
-       maven_inc_use,
-       maven_dec_use
+       .name = "maven",
+       .id = I2C_DRIVERID_MGATVO,
+       .flags = I2C_DF_NOTIFY,
+       .attach_adapter = maven_attach_adapter,
+       .detach_client = maven_detach_client,
+       .command = maven_command,
 };
 
 /* ************************** */
diff -urN linux-2.4.24.org/include/linux/i2c-algo-8xx.h linux-2.4.24/include/linux/i2c-algo-8xx.h
--- linux-2.4.24.org/include/linux/i2c-algo-8xx.h       1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.24/include/linux/i2c-algo-8xx.h   2004-02-04 22:36:36.749811393 +0100
@@ -0,0 +1,43 @@
+/* ------------------------------------------------------------------------- */
+/* i2c-algo-8xx.h i2c driver algorithms for MPX8XX CPM                      */
+/*
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.                */
+/* ------------------------------------------------------------------------- */
+
+/* $Id$ */
+
+#ifndef _LINUX_I2C_ALGO_8XX_H
+#define _LINUX_I2C_ALGO_8XX_H
+
+#include "asm/commproc.h"
+
+struct i2c_algo_8xx_data {
+       uint dp_addr;
+       int reloc;
+       volatile i2c8xx_t *i2c;
+       volatile iic_t  *iip;
+       volatile cpm8xx_t *cp;
+
+       int     (*setisr) (int irq,
+                          void (*func)(void *, void *),
+                          void *data);
+
+       u_char  temp[513];
+};
+
+int i2c_8xx_add_bus(struct i2c_adapter *);
+int i2c_8xx_del_bus(struct i2c_adapter *);
+
+#endif /* _LINUX_I2C_ALGO_8XX_H */
diff -urN linux-2.4.24.org/include/linux/i2c-algo-bit.h linux-2.4.24/include/linux/i2c-algo-bit.h
--- linux-2.4.24.org/include/linux/i2c-algo-bit.h       2004-02-04 22:30:56.871489160 +0100
+++ linux-2.4.24/include/linux/i2c-algo-bit.h   2004-02-04 22:36:36.784804115 +0100
@@ -21,12 +21,10 @@
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
    Frodo Looijaard <frodol@dds.nl> */
 
-/* $Id$ */
+/* $Id$ */
 
-#ifndef I2C_ALGO_BIT_H
-#define I2C_ALGO_BIT_H 1
-
-#include <linux/i2c.h>
+#ifndef _LINUX_I2C_ALGO_BIT_H
+#define _LINUX_I2C_ALGO_BIT_H
 
 /* --- Defines for bit-adapters ---------------------------------------        */
 /*
@@ -42,9 +40,10 @@
        int  (*getscl) (void *data);
 
        /* local settings */
-       int udelay;
-       int mdelay;
-       int timeout;
+       int udelay;             /* half-clock-cycle time in microsecs */
+                               /* i.e. clock is (500 / udelay) KHz */
+       int mdelay;             /* in millisecs, unused */
+       int timeout;            /* in jiffies */
 };
 
 #define I2C_BIT_ADAP_MAX       16
@@ -52,4 +51,4 @@
 int i2c_bit_add_bus(struct i2c_adapter *);
 int i2c_bit_del_bus(struct i2c_adapter *);
 
-#endif /* I2C_ALGO_BIT_H */
+#endif /* _LINUX_I2C_ALGO_BIT_H */
diff -urN linux-2.4.24.org/include/linux/i2c-algo-ibm_ocp.h linux-2.4.24/include/linux/i2c-algo-ibm_ocp.h
--- linux-2.4.24.org/include/linux/i2c-algo-ibm_ocp.h   1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.24/include/linux/i2c-algo-ibm_ocp.h       2004-02-04 22:36:36.788803283 +0100
@@ -0,0 +1,52 @@
+/* ------------------------------------------------------------------------- */
+/* i2c-algo-ibm_ocp.h i2c driver algorithms for IBM PPC 405 IIC adapters         */
+/* ------------------------------------------------------------------------- */
+/*   Copyright (C) 1995-97 Simon G. Vogl
+                   1998-99 Hans Berglund
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.                */
+/* ------------------------------------------------------------------------- */
+
+/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
+   Frodo Looijaard <frodol@dds.nl> */
+
+/* Modifications by MontaVista Software, August 2000
+   Changes made to support the IIC peripheral on the IBM PPC 405 */
+
+#ifndef _LINUX_I2C_ALGO_IBM_OCP_H
+#define _LINUX_I2C_ALGO_IBM_OCP_H
+
+struct i2c_algo_iic_data {
+       struct iic_regs *data;          /* private data for lolevel routines    */
+       void (*setiic) (void *data, int ctl, int val);
+       int  (*getiic) (void *data, int ctl);
+       int  (*getown) (void *data);
+       int  (*getclock) (void *data);
+       void (*waitforpin) (void *data);     
+
+       /* local settings */
+       int udelay;
+       int mdelay;
+       int timeout;
+};
+
+
+#define I2C_IIC_ADAP_MAX       16
+
+
+int i2c_ocp_add_bus(struct i2c_adapter *);
+int i2c_ocp_del_bus(struct i2c_adapter *);
+
+#endif /* _LINUX_I2C_ALGO_IBM_OCP_H */
diff -urN linux-2.4.24.org/include/linux/i2c-algo-pcf.h linux-2.4.24/include/linux/i2c-algo-pcf.h
--- linux-2.4.24.org/include/linux/i2c-algo-pcf.h       2004-02-04 22:30:56.872488952 +0100
+++ linux-2.4.24/include/linux/i2c-algo-pcf.h   2004-02-04 22:36:36.810798708 +0100
@@ -22,13 +22,12 @@
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
    Frodo Looijaard <frodol@dds.nl> */
 
-/* $Id$ */
+/* $Id$ */
 
-#ifndef I2C_ALGO_PCF_H
-#define I2C_ALGO_PCF_H 1
+#ifndef _LINUX_I2C_ALGO_PCF_H
+#define _LINUX_I2C_ALGO_PCF_H
 
-/* --- Defines for pcf-adapters ---------------------------------------        */
-#include <linux/i2c.h>
+#include <linux/i2c-pcf8584.h>
 
 struct i2c_algo_pcf_data {
        void *data;             /* private data for lolevel routines    */
@@ -49,4 +48,4 @@
 int i2c_pcf_add_bus(struct i2c_adapter *);
 int i2c_pcf_del_bus(struct i2c_adapter *);
 
-#endif /* I2C_ALGO_PCF_H */
+#endif /* _LINUX_I2C_ALGO_PCF_H */
diff -urN linux-2.4.24.org/include/linux/i2c-dev.h linux-2.4.24/include/linux/i2c-dev.h
--- linux-2.4.24.org/include/linux/i2c-dev.h    2004-02-04 22:30:49.848949493 +0100
+++ linux-2.4.24/include/linux/i2c-dev.h        2004-02-04 22:36:36.831794341 +0100
@@ -19,14 +19,16 @@
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
 
-/* $Id$ */
-
-#ifndef I2C_DEV_H
-#define I2C_DEV_H
+/* $Id$ */
 
+#ifndef _LINUX_I2C_DEV_H
+#define _LINUX_I2C_DEV_H
 
 #include <linux/types.h>
-#include <linux/i2c.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,18)
+#define minor(d) MINOR(d)
+#endif
 
 /* Some IOCTL commands are defined in <linux/i2c.h> */
 /* Note: 10-bit addresses are NOT supported! */
@@ -45,137 +47,4 @@
        __u32 nmsgs;            /* number of i2c_msgs */
 };
 
-#ifndef __KERNEL__
-
-#include <sys/ioctl.h>
-
-static inline __s32 i2c_smbus_access(int file, char read_write, __u8 command, 
-                                     int size, union i2c_smbus_data *data)
-{
-       struct i2c_smbus_ioctl_data args;
-
-       args.read_write = read_write;
-       args.command = command;
-       args.size = size;
-       args.data = data;
-       return ioctl(file,I2C_SMBUS,&args);
-}
-
-
-static inline __s32 i2c_smbus_write_quick(int file, __u8 value)
-{
-       return i2c_smbus_access(file,value,0,I2C_SMBUS_QUICK,NULL);
-}
-       
-static inline __s32 i2c_smbus_read_byte(int file)
-{
-       union i2c_smbus_data data;
-       if (i2c_smbus_access(file,I2C_SMBUS_READ,0,I2C_SMBUS_BYTE,&data))
-               return -1;
-       else
-               return 0x0FF & data.byte;
-}
-
-static inline __s32 i2c_smbus_write_byte(int file, __u8 value)
-{
-       return i2c_smbus_access(file,I2C_SMBUS_WRITE,value,
-                               I2C_SMBUS_BYTE,NULL);
-}
-
-static inline __s32 i2c_smbus_read_byte_data(int file, __u8 command)
-{
-       union i2c_smbus_data data;
-       if (i2c_smbus_access(file,I2C_SMBUS_READ,command,
-                            I2C_SMBUS_BYTE_DATA,&data))
-               return -1;
-       else
-               return 0x0FF & data.byte;
-}
-
-static inline __s32 i2c_smbus_write_byte_data(int file, __u8 command, 
-                                              __u8 value)
-{
-       union i2c_smbus_data data;
-       data.byte = value;
-       return i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
-                               I2C_SMBUS_BYTE_DATA, &data);
-}
-
-static inline __s32 i2c_smbus_read_word_data(int file, __u8 command)
-{
-       union i2c_smbus_data data;
-       if (i2c_smbus_access(file,I2C_SMBUS_READ,command,
-                            I2C_SMBUS_WORD_DATA,&data))
-               return -1;
-       else
-               return 0x0FFFF & data.word;
-}
-
-static inline __s32 i2c_smbus_write_word_data(int file, __u8 command, 
-                                              __u16 value)
-{
-       union i2c_smbus_data data;
-       data.word = value;
-       return i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
-                               I2C_SMBUS_WORD_DATA, &data);
-}
-
-static inline __s32 i2c_smbus_process_call(int file, __u8 command, __u16 value)
-{
-       union i2c_smbus_data data;
-       data.word = value;
-       if (i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
-                            I2C_SMBUS_PROC_CALL,&data))
-               return -1;
-       else
-               return 0x0FFFF & data.word;
-}
-
-
-/* Returns the number of read bytes */
-static inline __s32 i2c_smbus_read_block_data(int file, __u8 command, 
-                                              __u8 *values)
-{
-       union i2c_smbus_data data;
-       int i;
-       if (i2c_smbus_access(file,I2C_SMBUS_READ,command,
-                            I2C_SMBUS_BLOCK_DATA,&data))
-               return -1;
-       else {
-               for (i = 1; i <= data.block[0]; i++)
-                       values[i-1] = data.block[i];
-                       return data.block[0];
-       }
-}
-
-static inline __s32 i2c_smbus_write_block_data(int file, __u8 command, 
-                                               __u8 length, __u8 *values)
-{
-       union i2c_smbus_data data;
-       int i;
-       if (length > 32)
-               length = 32;
-       for (i = 1; i <= length; i++)
-               data.block[i] = values[i-1];
-       data.block[0] = length;
-       return i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
-                               I2C_SMBUS_BLOCK_DATA, &data);
-}
-
-static inline __s32 i2c_smbus_write_i2c_block_data(int file, __u8 command,
-                                               __u8 length, __u8 *values)
-{
-       union i2c_smbus_data data;
-       int i;
-       if (length > 32)
-               length = 32;
-       for (i = 1; i <= length; i++)
-               data.block[i] = values[i-1];
-       data.block[0] = length;
-       return i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
-                               I2C_SMBUS_I2C_BLOCK_DATA, &data);
-}
-
-#endif /* ndef __KERNEL__ */
-
-#endif
+#endif /* _LINUX_I2C_DEV_H */
diff -urN linux-2.4.24.org/include/linux/i2c-elektor.h linux-2.4.24/include/linux/i2c-elektor.h
--- linux-2.4.24.org/include/linux/i2c-elektor.h        2004-02-04 22:30:56.931476685 +0100
+++ linux-2.4.24/include/linux/i2c-elektor.h    2004-02-04 22:36:36.834793718 +0100
@@ -1,47 +0,0 @@
-/* ------------------------------------------------------------------------- */
-/* i2c-elektor.c i2c-hw access for PCF8584 style isa bus adaptes             */
-/* ------------------------------------------------------------------------- */
-/*   Copyright (C) 1995-97 Simon G. Vogl
-                   1998-99 Hans Berglund
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.                */
-/* ------------------------------------------------------------------------- */
-
-/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
-   Frodo Looijaard <frodol@dds.nl> */
-
-/* $Id$ */
-
-#ifndef I2C_PCF_ELEKTOR_H
-#define I2C_PCF_ELEKTOR_H 1
-
-/*
- * This struct contains the hw-dependent functions of PCF8584 adapters to
- * manipulate the registers, and to init any hw-specific features.
- * vdovikin: removed: this module in real supports only one device,
- * due to missing arguments in some functions, called from the algo-pcf module.
- * Sometimes it's need to be rewriten -
- * but for now just remove this for simpler reading */
-
-/*
-struct i2c_pcf_isa {
-       int pi_base;
-       int pi_irq;
-       int pi_clock;
-       int pi_own;
-};
-*/
-
-#endif /* PCF_ELEKTOR_H */
diff -urN linux-2.4.24.org/include/linux/i2c.h linux-2.4.24/include/linux/i2c.h
--- linux-2.4.24.org/include/linux/i2c.h        2004-02-04 22:30:49.830953235 +0100
+++ linux-2.4.24/include/linux/i2c.h    2004-02-04 22:36:36.957768140 +0100
@@ -23,36 +23,33 @@
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and
    Frodo Looijaard <frodol@dds.nl> */
 
-/* $Id$ */
+/* $Id$ */
 
-#ifndef I2C_H
-#define I2C_H
+#ifndef _LINUX_I2C_H
+#define _LINUX_I2C_H
 
-#define I2C_DATE "20010830"
-#define I2C_VERSION "2.6.1"
+#define I2C_DATE "20040115"
+#define I2C_VERSION "2.8.3"
 
-#include <linux/i2c-id.h>      /* id values of adapters et. al.        */
+#include <linux/module.h>
 #include <linux/types.h>
-
-
-struct i2c_msg;
-
-
-#ifdef __KERNEL__
-
-/* --- Includes and compatibility declarations ------------------------ */
-
+#include <linux/errno.h>
+#include <linux/sched.h>
 #include <asm/semaphore.h>
-#include <linux/config.h>
+#include <linux/i2c-id.h>
+
+#include <linux/version.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,10)
+#define MODULE_LICENSE(x)
+#endif
 
 /* --- General options ------------------------------------------------        */
 
-#define I2C_ALGO_MAX   4               /* control memory consumption   */
-#define I2C_ADAP_MAX   16
+#define I2C_ADAP_MAX   16              /* control memory consumption   */
 #define I2C_DRIVER_MAX 16
 #define I2C_CLIENT_MAX 32
-#define I2C_DUMMY_MAX 4
 
+struct i2c_msg;
 struct i2c_algorithm;
 struct i2c_adapter;
 struct i2c_client;
@@ -60,7 +57,6 @@
 struct i2c_client_address_data;
 union i2c_smbus_data;
 
-
 /*
  * The master routines are the ones normally used to transmit data to devices
  * on a bus (or read from them). Apart from two basic transfer functions to 
@@ -113,6 +109,8 @@
 extern s32 i2c_smbus_write_block_data(struct i2c_client * client,
                                       u8 command, u8 length,
                                       u8 *values);
+extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client,
+                                         u8 command, u8 *values);
 extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client * client,
                                           u8 command, u8 length,
                                           u8 *values);
@@ -125,6 +123,7 @@
  */
 
 struct i2c_driver {
+       struct module *owner;
        char name[32];
        int id;
        unsigned int flags;             /* div., see below              */
@@ -148,18 +147,6 @@
         * with the device.
         */
        int (*command)(struct i2c_client *client,unsigned int cmd, void *arg);
-       
-       /* These two are mainly used for bookkeeping & dynamic unloading of 
-        * kernel modules. inc_use tells the driver that a client is being  
-        * used by another module & that it should increase its ref. counter.
-        * dec_use is the inverse operation.
-        * NB: Make sure you have no circular dependencies, or else you get a 
-        * deadlock when trying to unload the modules.
-       * You should use the i2c_{inc,dec}_use_client functions instead of
-       * calling this function directly.
-        */
-       void (*inc_use)(struct i2c_client *client);
-       void (*dec_use)(struct i2c_client *client);
 };
 
 /*
@@ -192,6 +179,7 @@
  * to name two of the most common.
  */
 struct i2c_algorithm {
+       struct module *owner;                   /* future use --km      */
        char name[32];                          /* textual description  */
        unsigned int id;
 
@@ -221,16 +209,13 @@
  * with the access algorithms necessary to access it.
  */
 struct i2c_adapter {
+       struct module *owner;
        char name[32];  /* some useful name to identify the adapter     */
        unsigned int id;/* == is algo->id | hwdep.struct->id,           */
                        /* for registered values see below              */
        struct i2c_algorithm *algo;/* the algorithm to access the bus   */
        void *algo_data;
 
-       /* --- These may be NULL, but should increase the module use count */
-       void (*inc_use)(struct i2c_adapter *);
-       void (*dec_use)(struct i2c_adapter *);
-
        /* --- administration stuff. */
        int (*client_register)(struct i2c_client *);
        int (*client_unregister)(struct i2c_client *);
@@ -241,11 +226,11 @@
                        /* and can be set via the i2c_ioctl call        */
 
                        /* data fields that are valid for all devices   */
-       struct semaphore lock;  
+       struct semaphore bus;
+       struct semaphore list;  
        unsigned int flags;/* flags specifying div. data                */
 
        struct i2c_client *clients[I2C_CLIENT_MAX];
-       int client_count;
 
        int timeout;
        int retries;
@@ -264,6 +249,9 @@
 #define I2C_CLIENT_ALLOW_USE           0x01    /* Client allows access */
 #define I2C_CLIENT_ALLOW_MULTIPLE_USE  0x02    /* Allow multiple access-locks */
                                                /* on an i2c_client */
+#define I2C_CLIENT_PEC  0x04                   /* Use Packet Error Checking */
+#define I2C_CLIENT_TEN 0x10                    /* we have a ten bit chip address       */
+                                               /* Must equal I2C_M_TEN below */
 
 /* i2c_client_address_data is the struct for holding default client
  * addresses for a driver and for the parameters supplied on the
@@ -302,12 +290,6 @@
 extern int i2c_attach_client(struct i2c_client *);
 extern int i2c_detach_client(struct i2c_client *);
 
-/* Only call these if you grab a resource that makes unloading the
-   client and the adapter it is on completely impossible. Like when a
-   /proc directory is entered. */
-extern void i2c_inc_use_client(struct i2c_client *);
-extern void i2c_dec_use_client(struct i2c_client *);
-
 /* New function: This is to get an i2c_client-struct for controlling the 
    client either by using i2c_control-function or having the 
    client-module export functions that can be used with the i2c_client
@@ -341,6 +323,15 @@
                struct i2c_client_address_data *address_data,
                i2c_client_found_addr_proc *found_proc);
 
+static inline int i2c_client_command(struct i2c_client *client,
+                                    unsigned int cmd, void *arg)
+{
+       if (client->driver && client->driver->command)
+               return client->driver->command(client, cmd, arg);
+       else
+               return -EINVAL;
+}
+
 /* An ioctl like call to set div. parameters of the adapter.
  */
 extern int i2c_control(struct i2c_client *,unsigned int, unsigned long);
@@ -358,8 +349,6 @@
 /* Return 1 if adapter supports everything we need, 0 if not. */
 extern int i2c_check_functionality (struct i2c_adapter *adap, u32 func);
 
-#endif /* __KERNEL__ */
-
 /*
  * I2C Message - used for pure i2c transaction, also from /dev interface
  */
@@ -370,15 +359,28 @@
 #define I2C_M_RD       0x01
 #define I2C_M_NOSTART  0x4000
 #define I2C_M_REV_DIR_ADDR     0x2000
+#define I2C_M_IGNORE_NAK       0x1000
+#define I2C_M_NO_RD_ACK                0x0800
+#define I2C_M_RECV_LEN         0x0400 /* length will be first received byte */
+#define I2C_M_RECV_PEC         0x0200 /* receive one more than the returned
+                                         length byte for the PEC */
        __u16 len;              /* msg length                           */
        __u8 *buf;              /* pointer to msg data                  */
+       int err;
+       short done;
 };
 
 /* To determine what functionality is present */
 
 #define I2C_FUNC_I2C                   0x00000001
 #define I2C_FUNC_10BIT_ADDR            0x00000002
-#define I2C_FUNC_PROTOCOL_MANGLING     0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART} */
+#define I2C_FUNC_PROTOCOL_MANGLING     0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART,..} */
+#define I2C_FUNC_SMBUS_HWPEC_CALC      0x00000008 /* SMBus 2.0 */
+#define I2C_FUNC_SMBUS_READ_WORD_DATA_PEC  0x00000800 /* SMBus 2.0 */ 
+#define I2C_FUNC_SMBUS_WRITE_WORD_DATA_PEC 0x00001000 /* SMBus 2.0 */ 
+#define I2C_FUNC_SMBUS_PROC_CALL_PEC   0x00002000 /* SMBus 2.0 */
+#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL_PEC 0x00004000 /* SMBus 2.0 */
+#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */
 #define I2C_FUNC_SMBUS_QUICK           0x00010000 
 #define I2C_FUNC_SMBUS_READ_BYTE       0x00020000 
 #define I2C_FUNC_SMBUS_WRITE_BYTE      0x00040000 
@@ -389,8 +391,12 @@
 #define I2C_FUNC_SMBUS_PROC_CALL       0x00800000 
 #define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0x01000000 
 #define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000 
-#define I2C_FUNC_SMBUS_READ_I2C_BLOCK  0x04000000 /* New I2C-like block */
-#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* transfer */
+#define I2C_FUNC_SMBUS_READ_I2C_BLOCK  0x04000000 /* I2C-like block xfer  */
+#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* w/ 1-byte reg. addr. */
+#define I2C_FUNC_SMBUS_READ_I2C_BLOCK_2         0x10000000 /* I2C-like block xfer  */
+#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 0x20000000 /* w/ 2-byte reg. addr. */
+#define I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC  0x40000000 /* SMBus 2.0 */
+#define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC 0x80000000 /* SMBus 2.0 */
 
 #define I2C_FUNC_SMBUS_BYTE I2C_FUNC_SMBUS_READ_BYTE | \
                             I2C_FUNC_SMBUS_WRITE_BYTE
@@ -402,13 +408,28 @@
                                   I2C_FUNC_SMBUS_WRITE_BLOCK_DATA
 #define I2C_FUNC_SMBUS_I2C_BLOCK I2C_FUNC_SMBUS_READ_I2C_BLOCK | \
                                   I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
+#define I2C_FUNC_SMBUS_I2C_BLOCK_2 I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \
+                                   I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2
+#define I2C_FUNC_SMBUS_BLOCK_DATA_PEC I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC | \
+                                      I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC
+#define I2C_FUNC_SMBUS_WORD_DATA_PEC  I2C_FUNC_SMBUS_READ_WORD_DATA_PEC | \
+                                      I2C_FUNC_SMBUS_WRITE_WORD_DATA_PEC
+
+#define I2C_FUNC_SMBUS_READ_BYTE_PEC           I2C_FUNC_SMBUS_READ_BYTE_DATA
+#define I2C_FUNC_SMBUS_WRITE_BYTE_PEC          I2C_FUNC_SMBUS_WRITE_BYTE_DATA
+#define I2C_FUNC_SMBUS_READ_BYTE_DATA_PEC      I2C_FUNC_SMBUS_READ_WORD_DATA
+#define I2C_FUNC_SMBUS_WRITE_BYTE_DATA_PEC     I2C_FUNC_SMBUS_WRITE_WORD_DATA
+#define I2C_FUNC_SMBUS_BYTE_PEC                        I2C_FUNC_SMBUS_BYTE_DATA
+#define I2C_FUNC_SMBUS_BYTE_DATA_PEC           I2C_FUNC_SMBUS_WORD_DATA
 
 #define I2C_FUNC_SMBUS_EMUL I2C_FUNC_SMBUS_QUICK | \
                             I2C_FUNC_SMBUS_BYTE | \
                             I2C_FUNC_SMBUS_BYTE_DATA | \
                             I2C_FUNC_SMBUS_WORD_DATA | \
                             I2C_FUNC_SMBUS_PROC_CALL | \
-                            I2C_FUNC_SMBUS_WRITE_BLOCK_DATA
+                            I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \
+                            I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC | \
+                            I2C_FUNC_SMBUS_I2C_BLOCK
 
 /* 
  * Data for SMBus Messages 
@@ -418,8 +439,9 @@
 union i2c_smbus_data {
        __u8 byte;
        __u16 word;
-       __u8 block[I2C_SMBUS_BLOCK_MAX + 2]; /* block[0] is used for length */
+       __u8 block[I2C_SMBUS_BLOCK_MAX + 3]; /* block[0] is used for length */
                          /* one more for read length in block process call */
+                                                   /* and one more for PEC */
 };
 
 /* smbus_access read or write markers */
@@ -435,6 +457,11 @@
 #define I2C_SMBUS_PROC_CALL        4
 #define I2C_SMBUS_BLOCK_DATA       5
 #define I2C_SMBUS_I2C_BLOCK_DATA    6
+#define I2C_SMBUS_BLOCK_PROC_CALL   7          /* SMBus 2.0 */
+#define I2C_SMBUS_BLOCK_DATA_PEC    8          /* SMBus 2.0 */
+#define I2C_SMBUS_PROC_CALL_PEC     9          /* SMBus 2.0 */
+#define I2C_SMBUS_BLOCK_PROC_CALL_PEC  10      /* SMBus 2.0 */
+#define I2C_SMBUS_WORD_DATA_PEC           11           /* SMBus 2.0 */
 
 
 /* ----- commands for the ioctl like i2c_command call:
@@ -460,6 +487,7 @@
 
 #define I2C_FUNCS      0x0705  /* Get the adapter functionality */
 #define I2C_RDWR       0x0707  /* Combined R/W transfer (one stop only)*/
+#define I2C_PEC                0x0708  /* != 0 for SMBus PEC                   */
 #if 0
 #define I2C_ACK_TEST   0x0710  /* See if a slave is at a specific address */
 #endif
@@ -475,16 +503,6 @@
 
 #define I2C_MAJOR      89              /* Device major number          */
 
-#ifdef __KERNEL__
-
-#  ifndef NULL
-#    define NULL ( (void *) 0 )
-#  endif
-
-#  ifndef ENODEV
-#    include <asm/errno.h>
-#  endif
-
 /* These defines are used for probing i2c client addresses */
 /* Default fill of many variables */
 #define I2C_CLIENT_DEFAULTS {I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
@@ -546,5 +564,11 @@
 #define i2c_is_isa_adapter(adapptr) \
         ((adapptr)->algo->id == I2C_ALGO_ISA)
 
-#endif /* def __KERNEL__ */
-#endif /* I2C_H */
+/* Tiny delay function used by the i2c bus drivers */
+static inline void i2c_delay(signed long timeout)
+{
+       set_current_state(TASK_INTERRUPTIBLE);
+       schedule_timeout(timeout);
+}
+
+#endif /* _LINUX_I2C_H */
diff -urN linux-2.4.24.org/include/linux/i2c-id.h linux-2.4.24/include/linux/i2c-id.h
--- linux-2.4.24.org/include/linux/i2c-id.h     2004-02-04 22:30:48.969132451 +0100
+++ linux-2.4.24/include/linux/i2c-id.h 2004-02-04 22:36:37.005758159 +0100
@@ -20,10 +20,11 @@
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               */
 /* ------------------------------------------------------------------------- */
 
-/* $Id$ */
+/* $Id$ */
+
+#ifndef LINUX_I2C_ID_H
+#define LINUX_I2C_ID_H
 
-#ifndef I2C_ID_H
-#define I2C_ID_H
 /*
  * This file is part of the i2c-bus package and contains the identifier
  * values for drivers, adapters and other folk populating these serial
@@ -90,10 +91,25 @@
 #define I2C_DRIVERID_DRP3510   43     /* ADR decoder (Astra Radio)     */
 #define I2C_DRIVERID_SP5055    44     /* Satellite tuner               */
 #define I2C_DRIVERID_STV0030   45     /* Multipurpose switch           */
+#define I2C_DRIVERID_SAA7108   46     /* video decoder, image scaler   */
+#define I2C_DRIVERID_DS1307    47     /* DS1307 real time clock        */
 #define I2C_DRIVERID_ADV7175   48     /* ADV 7175/7176 video encoder   */
-#define I2C_DRIVERID_MAX1617   56     /* temp sensor                   */
-#define I2C_DRIVERID_SAA7191   57     /* video decoder                 */
-#define I2C_DRIVERID_INDYCAM   58     /* SGI IndyCam                   */
+#define I2C_DRIVERID_ZR36067   49     /* Zoran 36067 video encoder     */
+#define I2C_DRIVERID_ZR36120   50     /* Zoran 36120 video encoder     */
+#define I2C_DRIVERID_24LC32A   51      /* Microchip 24LC32A 32k EEPROM */
+#define I2C_DRIVERID_STM41T00  52      /* real time clock              */
+#define I2C_DRIVERID_UDA1342   53      /* UDA1342 audio codec          */
+#define I2C_DRIVERID_ADV7170   54      /* video encoder                */
+#define I2C_DRIVERID_RADEON    55      /* I2C bus on Radeon boards     */
+#define I2C_DRIVERID_MAX1617   56      /* temp sensor                  */
+#define I2C_DRIVERID_SAA7191   57      /* video encoder                */
+#define I2C_DRIVERID_INDYCAM   58      /* SGI IndyCam                  */
+#define I2C_DRIVERID_BT832     59      /* CMOS camera video processor  */
+#define I2C_DRIVERID_TDA9887   60      /* TDA988x IF-PLL demodulator   */
+#define I2C_DRIVERID_OVCAMCHIP 61      /* OmniVision CMOS image sens.  */
+#define I2C_DRIVERID_TDA7313   62      /* TDA7313 audio processor      */
+
+
 
 #define I2C_DRIVERID_EXP0      0xF0    /* experimental use id's        */
 #define I2C_DRIVERID_EXP1      0xF1
@@ -102,6 +118,8 @@
 
 #define I2C_DRIVERID_I2CDEV    900
 #define I2C_DRIVERID_I2CPROC   901
+#define I2C_DRIVERID_ARP        902    /* SMBus ARP Client              */
+#define I2C_DRIVERID_ALERT      903    /* SMBus Alert Responder Client  */
 
 /* IDs --   Use DRIVERIDs 1000-1999 for sensors. 
    These were originally in sensors.h in the lm_sensors package */
@@ -131,6 +149,26 @@
 #define I2C_DRIVERID_ADM1024 1025
 #define I2C_DRIVERID_IT87 1026
 #define I2C_DRIVERID_CH700X 1027 /* single driver for CH7003-7009 digital pc to tv encoders */
+#define I2C_DRIVERID_FSCPOS 1028
+#define I2C_DRIVERID_FSCSCY 1029
+#define I2C_DRIVERID_PCF8591 1030
+#define I2C_DRIVERID_SMSC47M1 1031
+#define I2C_DRIVERID_VT1211 1032
+#define I2C_DRIVERID_LM92 1033
+#define I2C_DRIVERID_VT8231 1034
+#define I2C_DRIVERID_SMARTBATT 1035
+#define I2C_DRIVERID_BMCSENSORS 1036
+#define I2C_DRIVERID_FS451 1037
+#define I2C_DRIVERID_W83627HF 1038
+#define I2C_DRIVERID_LM85 1039
+#define I2C_DRIVERID_LM83 1040
+#define I2C_DRIVERID_SAA1064 1041
+#define I2C_DRIVERID_LM90 1042
+#define I2C_DRIVERID_ASB100 1043
+#define I2C_DRIVERID_MAX6650 1044
+#define I2C_DRIVERID_XEONTEMP 1045
+#define I2C_DRIVERID_FSCHER 1046
+#define I2C_DRIVERID_W83L785TS 1047
 
 /*
  * ---- Adapter types ----------------------------------------------------
@@ -147,14 +185,21 @@
 #define I2C_ALGO_ISA   0x050000        /* lm_sensors ISA pseudo-adapter */
 #define I2C_ALGO_SAA7146 0x060000      /* SAA 7146 video decoder bus   */
 #define I2C_ALGO_ACB   0x070000        /* ACCESS.bus algorithm         */
-
+#define I2C_ALGO_IIC    0x080000       /* ITE IIC bus */
+#define I2C_ALGO_SAA7134 0x090000
+#define I2C_ALGO_MPC824X 0x0a0000      /* Motorola 8240 / 8245         */
+#define I2C_ALGO_IPMI  0x0b0000        /* IPMI dummy adapter */
+#define I2C_ALGO_IPMB  0x0c0000        /* IPMB adapter */
+#define I2C_ALGO_MPC107 0x0d0000
 #define I2C_ALGO_EC     0x100000        /* ACPI embedded controller     */
 
 #define I2C_ALGO_MPC8XX 0x110000       /* MPC8xx PowerPC I2C algorithm */
-
-#define I2C_ALGO_SIBYTE 0x120000       /* Broadcom SiByte SOCs         */
-
-#define I2C_ALGO_SGI   0x130000        /* SGI algorithm                */
+#define I2C_ALGO_OCP    0x120000       /* IBM or otherwise On-chip I2C algorithm */
+#define I2C_ALGO_BITHS 0x130000        /* enhanced bit style adapters  */
+#define I2C_ALGO_OCP_IOP3XX  0x140000  /* XSCALE IOP3XX On-chip I2C alg */
+#define I2C_ALGO_SIBYTE        0x150000        /* Broadcom SiByte SOCs         */
+#define I2C_ALGO_SGI   0x160000        /* SGI algorithm                */
+#define I2C_ALGO_USB   0x170000        /* USB algorithm                */
 
 #define I2C_ALGO_EXP   0x800000        /* experimental                 */
 
@@ -182,27 +227,45 @@
 #define I2C_HW_B_I810  0x0a    /* Intel I810                           */
 #define I2C_HW_B_VOO   0x0b    /* 3dfx Voodoo 3 / Banshee              */
 #define I2C_HW_B_PPORT  0x0c   /* Primitive parallel port adapter      */
+#define I2C_HW_B_SAVG  0x0d    /* Savage 4                             */
+#define I2C_HW_B_SCX200        0x0e    /* Nat'l Semi SCx200 I2C                */
 #define I2C_HW_B_RIVA  0x10    /* Riva based graphics cards            */
 #define I2C_HW_B_IOC   0x11    /* IOC bit-wiggling                     */
 #define I2C_HW_B_TSUNA  0x12   /* DEC Tsunami chipset                  */
+#define I2C_HW_B_FRODO  0x13    /* 2d3D, Inc. SA-1110 Development Board */
+#define I2C_HW_B_OMAHA  0x14    /* Omaha I2C interface (ARM)           */
+#define I2C_HW_B_GUIDE  0x15    /* Guide bit-basher                    */
+#define I2C_HW_B_IXP2000 0x16  /* GPIO on IXP2000 systems              */
+#define I2C_HW_B_IXP425 0x17   /* GPIO on IXP425 systems               */
+#define I2C_HW_B_S3VIA 0x18    /* S3Via ProSavage adapter              */
+#define I2C_HW_B_ZR36067 0x19  /* Zoran-36057/36067 based boards       */
+#define I2C_HW_B_PCILYNX 0x20  /* TI PCILynx I2C adapter               */
 
 /* --- PCF 8584 based algorithms                                       */
 #define I2C_HW_P_LP    0x00    /* Parallel port interface              */
 #define I2C_HW_P_ISA   0x01    /* generic ISA Bus inteface card        */
 #define I2C_HW_P_ELEK  0x02    /* Elektor ISA Bus inteface card        */
 
+/* --- USB based adapters                                              */
+#define I2C_HW_USB_USBVISION   0x00
+
 /* --- ACPI Embedded controller algorithms                              */
 #define I2C_HW_ACPI_EC          0x00
 
+/* --- MPC824x PowerPC adapters                                                */
+#define I2C_HW_MPC824X 0x00    /* Motorola 8240 / 8245                 */
+
 /* --- MPC8xx PowerPC adapters                                         */
 #define I2C_HW_MPC8XX_EPON 0x00        /* Eponymous MPC8xx I2C adapter         */
 
-/* --- Broadcom SiByte adapters                                                */
-#define I2C_HW_SIBYTE  0x00
+/* --- ITE based algorithms                                            */
+#define I2C_HW_I_IIC   0x00    /* controller on the ITE */
+
+/* --- PowerPC on-chip adapters                                                */
+#define I2C_HW_OCP 0x00        /* IBM on-chip I2C adapter      */
 
-/* --- SGI adapters                                                    */
-#define I2C_HW_SGI_VINO        0x00
-#define I2C_HW_SGI_MACE        0x01
+/* --- XSCALE on-chip adapters                          */
+#define I2C_HW_IOP321 0x00
 
 /* --- SMBus only adapters                                             */
 #define I2C_HW_SMBUS_PIIX4     0x00
@@ -213,9 +276,27 @@
 #define I2C_HW_SMBUS_AMD756    0x05
 #define I2C_HW_SMBUS_SIS5595   0x06
 #define I2C_HW_SMBUS_ALI1535   0x07
+#define I2C_HW_SMBUS_SIS630    0x08
+#define I2C_HW_SMBUS_SIS645    0x09
+#define I2C_HW_SMBUS_AMD8111   0x0a
+#define I2C_HW_SMBUS_SCX200    0x0b
+#define I2C_HW_SMBUS_NFORCE2   0x0c
 #define I2C_HW_SMBUS_W9968CF   0x0d
+#define I2C_HW_SMBUS_OV511     0x0e    /* OV511(+) USB 1.1 webcam ICs  */
+#define I2C_HW_SMBUS_OV518     0x0f    /* OV518(+) USB 1.1 webcam ICs  */
+#define I2C_HW_SMBUS_OV519     0x10    /* OV519 USB 1.1 webcam IC      */
+#define I2C_HW_SMBUS_OVFX2     0x11    /* Cypress Ez-USB FX2 USB 2.0   */
 
 /* --- ISA pseudo-adapter                                              */
 #define I2C_HW_ISA 0x00
 
-#endif /* I2C_ID_H */
+/* --- IPMI pseudo-adapter                                             */
+#define I2C_HW_IPMI 0x00
+
+/* --- IPMB adapter                                            */
+#define I2C_HW_IPMB 0x00
+
+/* --- MCP107 adapter */
+#define I2C_HW_MPC107 0x00
+
+#endif /* LINUX_I2C_ID_H */
diff -urN linux-2.4.24.org/include/linux/i2c-pcf8584.h linux-2.4.24/include/linux/i2c-pcf8584.h
--- linux-2.4.24.org/include/linux/i2c-pcf8584.h        1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.24/include/linux/i2c-pcf8584.h    2004-02-04 22:36:37.010757119 +0100
@@ -0,0 +1,78 @@
+/* -------------------------------------------------------------------- */
+/* i2c-pcf8584.h: PCF 8584 global defines                              */
+/* -------------------------------------------------------------------- */
+/*   Copyright (C) 1996 Simon G. Vogl
+                   1999 Hans Berglund
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.          */
+/* --------------------------------------------------------------------        */
+
+/* With some changes from Frodo Looijaard <frodol@dds.nl> */
+
+/* $Id$ */
+
+#ifndef _LINUX_I2C_PCF8584_H
+#define _LINUX_I2C_PCF8584_H
+
+/* ----- Control register bits ----------------------------------------        */
+#define I2C_PCF_PIN    0x80
+#define I2C_PCF_ESO    0x40
+#define I2C_PCF_ES1    0x20
+#define I2C_PCF_ES2    0x10
+#define I2C_PCF_ENI    0x08
+#define I2C_PCF_STA    0x04
+#define I2C_PCF_STO    0x02
+#define I2C_PCF_ACK    0x01
+
+#define I2C_PCF_START    (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_STA | I2C_PCF_ACK)
+#define I2C_PCF_STOP     (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_STO | I2C_PCF_ACK)
+#define I2C_PCF_REPSTART (              I2C_PCF_ESO | I2C_PCF_STA | I2C_PCF_ACK)
+#define I2C_PCF_IDLE     (I2C_PCF_PIN | I2C_PCF_ESO               | I2C_PCF_ACK)
+
+/* ----- Status register bits -----------------------------------------        */
+/*#define I2C_PCF_PIN  0x80    as above*/
+
+#define I2C_PCF_INI 0x40   /* 1 if not initialized */
+#define I2C_PCF_STS 0x20
+#define I2C_PCF_BER 0x10
+#define I2C_PCF_AD0 0x08
+#define I2C_PCF_LRB 0x08
+#define I2C_PCF_AAS 0x04
+#define I2C_PCF_LAB 0x02
+#define I2C_PCF_BB  0x01
+
+/* ----- Chip clock frequencies ---------------------------------------        */
+#define I2C_PCF_CLK3   0x00
+#define I2C_PCF_CLK443 0x10
+#define I2C_PCF_CLK6   0x14
+#define I2C_PCF_CLK    0x18
+#define I2C_PCF_CLK12  0x1c
+
+/* ----- transmission frequencies -------------------------------------        */
+#define I2C_PCF_TRNS90 0x00    /*  90 kHz */
+#define I2C_PCF_TRNS45 0x01    /*  45 kHz */
+#define I2C_PCF_TRNS11 0x02    /*  11 kHz */
+#define I2C_PCF_TRNS15 0x03    /* 1.5 kHz */
+
+
+/* ----- Access to internal registers according to ES1,ES2 ------------        */
+/* they are mapped to the data port ( a0 = 0 )                                 */
+/* available when ESO == 0 :                                           */
+
+#define I2C_PCF_OWNADR 0
+#define I2C_PCF_INTREG I2C_PCF_ES2
+#define I2C_PCF_CLKREG I2C_PCF_ES1
+
+#endif /* _LINUX_I2C_PCF8584_H */
diff -urN linux-2.4.24.org/include/linux/i2c-proc.h linux-2.4.24/include/linux/i2c-proc.h
--- linux-2.4.24.org/include/linux/i2c-proc.h   2004-02-04 22:30:58.421166905 +0100
+++ linux-2.4.24/include/linux/i2c-proc.h       2004-02-04 22:36:37.038751297 +0100
@@ -1,6 +1,7 @@
 /*
-    sensors.h - Part of lm_sensors, Linux kernel modules for hardware
-                monitoring
+    i2c-proc.h - Part of the i2c package
+    was originally sensors.h - Part of lm_sensors, Linux kernel modules
+                               for hardware monitoring
     Copyright (c) 1998, 1999  Frodo Looijaard <frodol@dds.nl>
 
     This program is free software; you can redistribute it and/or modify
@@ -18,14 +19,9 @@
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
 
-#ifndef SENSORS_SENSORS_H
-#define SENSORS_SENSORS_H
+#ifndef _LINUX_I2C_PROC_H
+#define _LINUX_I2C_PROC_H
 
-#ifdef __KERNEL__
-
-/* Next two must be included before sysctl.h can be included, in 2.0 kernels */
-#include <linux/types.h>
-#include <linux/fs.h>
 #include <linux/sysctl.h>
 
 /* The type of callback functions used in sensors_{proc,sysctl}_real */
@@ -73,8 +69,7 @@
    these functions must be updated! */
 extern int i2c_register_entry(struct i2c_client *client,
                                  const char *prefix,
-                                 ctl_table * ctl_template,
-                                 struct module *controlling_mod);
+                                 ctl_table * ctl_template);
 
 extern void i2c_deregister_entry(int id);
 
@@ -347,6 +342,31 @@
                                                  {NULL}}; \
   SENSORS_INSMOD
 
+#define SENSORS_INSMOD_8(chip1,chip2,chip3,chip4,chip5,chip6,chip7,chip8) \
+  enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6, chip7, chip8 }; \
+  SENSORS_MODULE_PARM(force, \
+                      "List of adapter,address pairs to boldly assume " \
+                      "to be present"); \
+  SENSORS_MODULE_PARM_FORCE(chip1); \
+  SENSORS_MODULE_PARM_FORCE(chip2); \
+  SENSORS_MODULE_PARM_FORCE(chip3); \
+  SENSORS_MODULE_PARM_FORCE(chip4); \
+  SENSORS_MODULE_PARM_FORCE(chip5); \
+  SENSORS_MODULE_PARM_FORCE(chip6); \
+  SENSORS_MODULE_PARM_FORCE(chip7); \
+  SENSORS_MODULE_PARM_FORCE(chip8); \
+  static struct i2c_force_data forces[] = {{force,any_chip}, \
+                                                 {force_ ## chip1,chip1}, \
+                                                 {force_ ## chip2,chip2}, \
+                                                 {force_ ## chip3,chip3}, \
+                                                 {force_ ## chip4,chip4}, \
+                                                 {force_ ## chip5,chip5}, \
+                                                 {force_ ## chip6,chip6}, \
+                                                 {force_ ## chip7,chip7}, \
+                                                 {force_ ## chip8,chip8}, \
+                                                 {NULL}}; \
+  SENSORS_INSMOD
+
 typedef int i2c_found_addr_proc(struct i2c_adapter *adapter,
                                    int addr, unsigned short flags,
                                    int kind);
@@ -362,7 +382,7 @@
 
 /* This macro is used to scale user-input to sensible values in almost all
    chip drivers. */
-extern inline int SENSORS_LIMIT(long value, long low, long high)
+static inline int SENSORS_LIMIT(long value, long low, long high)
 {
        if (value < low)
                return low;
@@ -372,8 +392,6 @@
                return value;
 }
 
-#endif                         /* def __KERNEL__ */
-
 
 /* The maximum length of the prefix */
 #define SENSORS_PREFIX_MAX 20
@@ -392,5 +410,5 @@
        char name[SENSORS_PREFIX_MAX + 13];
 };
 
-#endif                         /* def SENSORS_SENSORS_H */
+#endif                         /* def _LINUX_I2C_PROC_H */