[PATCH] i2c updates 2/4

Please apply the two of four tested patches that update
2.5.31 with these I2C changes:
 o Support for SMBus 2.0 PEC Packet Error Checking
 o New adapter-i2c-frodo for SA 1110 board
 o New adapter-i2c-rpx for embeded MPC8XX
 o Replace depreciated cli()&sti() with spin_{un}lock_irq()
 o Updated documentation

drivers/i2c/i2c-core.c

@@ -18,9 +18,10 @@
 /* ------------------------------------------------------------------------- */
 
 /* With some changes from Kysti Mlkki <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 1.73 2002/03/03 17:37:44 mds Exp $ */
+/* $Id: i2c-core.c,v 1.83 2002/07/08 01:37:15 mds Exp $ */
 
 #include <linux/module.h>
 #include <linux/kernel.h>
@@ -371,7 +372,7 @@ int i2c_del_driver(struct i2c_driver *driver)
 				struct i2c_client *client = adap->clients[j];
 				if (client != NULL && 
 				    client->driver == driver) {
-					DEB2(printk("i2c-core.o: "
+					DEB2(printk(KERN_DEBUG "i2c-core.o: "
 						    "detaching client %s:\n",
 					            client->name));
 					if ((res = driver->
@@ -1002,6 +1003,123 @@ int i2c_adapter_id(struct i2c_adapter *adap)
 
 /* 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,
@@ -1020,8 +1138,9 @@ extern s32 i2c_smbus_read_byte(struct i2c_client * client)
 
 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)
@@ -1099,8 +1218,8 @@ extern s32 i2c_smbus_write_block_data(struct i2c_client * client,
 {
 	union i2c_smbus_data data;
 	int i;
-	if (length > 32)
-		length = 32;
+	if (length > I2C_SMBUS_BLOCK_MAX)
+		length = I2C_SMBUS_BLOCK_MAX;
 	for (i = 1; i <= length; i++)
 		data.block[i] = values[i-1];
 	data.block[0] = length;
@@ -1109,6 +1228,26 @@ extern s32 i2c_smbus_write_block_data(struct i2c_client * client,
 	                      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)
@@ -1131,8 +1270,8 @@ extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client * client,
 {
 	union i2c_smbus_data data;
 	int i;
-	if (length > 32)
-		length = 32;
+	if (length > I2C_SMBUS_I2C_BLOCK_MAX)
+		length = I2C_SMBUS_I2C_BLOCK_MAX;
 	for (i = 1; i <= length; i++)
 		data.block[i] = values[i-1];
 	data.block[0] = length;
@@ -1194,34 +1333,43 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
 		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");
+			printk(KERN_ERR "i2c-core.o: Block read not supported "
+			       "under I2C emulation!\n");
 			return -1;
 		} else {
 			msg[0].len = data->block[0] + 2;
-			if (msg[0].len > 34) {
+			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;
 			}
+			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:
+		printk(KERN_ERR "i2c-core.o: Block process call not supported "
+		       "under I2C emulation!\n");
+		return -1;
 	case I2C_SMBUS_I2C_BLOCK_DATA:
 		if (read_write == I2C_SMBUS_READ) {
-			msg[1].len = 32;
+			msg[1].len = I2C_SMBUS_I2C_BLOCK_MAX;
 		} else {
 			msg[0].len = data->block[0] + 2;
-			if (msg[0].len > 34) {
+			if (msg[0].len > I2C_SMBUS_I2C_BLOCK_MAX + 2) {
 				printk("i2c-core.o: i2c_smbus_xfer_emulated called with "
 				       "invalid block write size (%d)\n",
 				       data->block[0]);
@@ -1254,8 +1402,8 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
 				break;
 			case I2C_SMBUS_I2C_BLOCK_DATA:
 				/* fixed at 32 for now */
-				data->block[0] = 32;
-				for (i = 0; i < 32; i++)
+				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;
 		}
@@ -1268,7 +1416,29 @@ s32 i2c_smbus_xfer(struct i2c_adapter * adapter, u16 addr, unsigned short flags,
                    union i2c_smbus_data * data)
 {
 	s32 res;
-	flags = flags & I2C_M_TEN;
+	int swpec = 0;
+	u8 partial = 0;
+
+	flags &= I2C_M_TEN | I2C_CLIENT_PEC;
+	if((flags & I2C_CLIENT_PEC) &&
+	   !(i2c_check_functionality(adapter, 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 (adapter->algo->smbus_xfer) {
 		I2C_LOCK(adapter);
 		res = adapter->algo->smbus_xfer(adapter,addr,flags,read_write,
@@ -1277,6 +1447,14 @@ s32 i2c_smbus_xfer(struct i2c_adapter * adapter, u16 addr, unsigned short flags,
 	} else
 		res = i2c_smbus_xfer_emulated(adapter,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;
 }
 

drivers/i2c/i2c-dev.c

@@ -28,7 +28,7 @@
 /* The devfs code is contributed by Philipp Matthias Hahn 
    <pmhahn@titan.lahn.de> */
 
-/* $Id: i2c-dev.c,v 1.44 2001/11/19 18:45:02 mds Exp $ */
+/* $Id: i2c-dev.c,v 1.46 2002/07/06 02:07:39 mds Exp $ */
 
 #include <linux/config.h>
 #include <linux/kernel.h>
@@ -236,6 +236,12 @@ int i2cdev_ioctl (struct inode *inode, struct file *file, unsigned int cmd,
 		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,
@@ -312,7 +318,8 @@ int i2cdev_ioctl (struct inode *inode, struct file *file, unsigned int cmd,
 		    (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);
@@ -355,10 +362,11 @@ int i2cdev_ioctl (struct inode *inode, struct file *file, unsigned int cmd,
 		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;
@@ -367,6 +375,7 @@ int i2cdev_ioctl (struct inode *inode, struct file *file, unsigned int cmd,
 		      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;
@@ -535,6 +544,8 @@ int i2cdev_cleanup(void)
 	return 0;
 }
 
+EXPORT_NO_SYMBOLS;
+
 #ifdef MODULE
 
 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and Simon G. Vogl <simon@tk.uni-linz.ac.at>");

drivers/i2c/i2c-proc.c

@@ -60,6 +60,7 @@ int __init sensors_init(void);
 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},
@@ -172,7 +173,7 @@ int i2c_register_entry(struct i2c_client *client, const char *prefix,
 		printk(KERN_ERR "i2c-proc.o: error: sysctl interface not supported by kernel!\n");
 		kfree(new_table);
 		kfree(name);
-		return -ENOMEM;
+		return -EPERM;
 	}
 
 	i2c_entries[id - 256] = new_header;
@@ -188,6 +189,8 @@ int i2c_register_entry(struct i2c_client *client, const char *prefix,
 		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;
@@ -210,6 +213,49 @@ void i2c_deregister_entry(int id)
 	}
 }
 
+/* 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;
+
+#ifdef DEBUG
+	if (!inode) {
+		printk(KERN_ERR "i2c-proc.o: Warning: inode NULL in fill_inode()\n");
+		return;
+	}
+#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
+		    (KERN_ERR "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);
+}
+
 int i2c_proc_chips(ctl_table * ctl, int write, struct file *filp,
 		       void *buffer, size_t * lenp)
 {

include/linux/i2c-dev.h

@@ -19,7 +19,7 @@
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
 
-/* $Id: i2c-dev.h,v 1.10 2001/11/19 19:01:46 mds Exp $ */
+/* $Id: i2c-dev.h,v 1.11 2002/07/07 15:42:47 mds Exp $ */
 
 #ifndef I2C_DEV_H
 #define I2C_DEV_H
@@ -192,6 +192,27 @@ static inline __s32 i2c_smbus_write_i2c_block_data(int file, __u8 command,
 	                        I2C_SMBUS_I2C_BLOCK_DATA, &data);
 }
 
+/* Returns the number of read bytes */
+static inline __s32 i2c_smbus_block_process_call(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;
+	if (i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
+	                     I2C_SMBUS_BLOCK_PROC_CALL,&data))
+		return -1;
+	else {
+		for (i = 1; i <= data.block[0]; i++)
+			values[i-1] = data.block[i];
+		return data.block[0];
+	}
+}
+
 #endif /* ndef __KERNEL__ */
 
 #endif

include/linux/i2c-id.h

@@ -20,7 +20,7 @@
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.		     */
 /* ------------------------------------------------------------------------- */
 
-/* $Id: i2c-id.h,v 1.41 2002/03/11 07:18:55 simon Exp $ */
+/* $Id: i2c-id.h,v 1.52 2002/07/10 13:28:44 abz Exp $ */
 
 #ifndef I2C_ID_H
 #define I2C_ID_H
@@ -91,7 +91,11 @@
 #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_ADV717x	48     /* ADV 7175/7176 video encoder	*/
+#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	*/
 
 
 
@@ -102,6 +106,8 @@
 
 #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 */
@@ -134,6 +140,9 @@
 #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
 
 /*
  * ---- Adapter types ----------------------------------------------------
@@ -155,6 +164,7 @@
 #define I2C_ALGO_EC     0x100000        /* ACPI embedded controller     */
 
 #define I2C_ALGO_MPC8XX 0x110000	/* MPC8xx PowerPC I2C algorithm */
+#define I2C_ALGO_OCP    0x120000	/* IBM or otherwise On-chip I2C algorithm */
 
 #define I2C_ALGO_EXP	0x800000	/* experimental			*/
 
@@ -182,9 +192,11 @@
 #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_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 */
 
 /* --- PCF 8584 based algorithms					*/
 #define I2C_HW_P_LP	0x00	/* Parallel port interface		*/
@@ -200,6 +212,10 @@
 /* --- 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 	*/
+
+
 /* --- SMBus only adapters						*/
 #define I2C_HW_SMBUS_PIIX4	0x00
 #define I2C_HW_SMBUS_ALI15X3	0x01

include/linux/i2c.h

@@ -23,13 +23,13 @@
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and
    Frodo Looijaard <frodol@dds.nl> */
 
-/* $Id: i2c.h,v 1.50 2002/03/23 00:53:38 phil Exp $ */
+/* $Id: i2c.h,v 1.59 2002/07/19 20:53:45 phil Exp $ */
 
 #ifndef I2C_H
 #define I2C_H
 
-#define I2C_DATE "20020322"
-#define I2C_VERSION "2.6.3"
+#define I2C_DATE "20020719"
+#define I2C_VERSION "2.6.4"
 
 #include <linux/i2c-id.h>	/* id values of adapters et. al. 	*/
 #include <linux/types.h>
@@ -280,6 +280,9 @@ struct i2c_adapter {
 #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
@@ -395,6 +398,12 @@ struct i2c_msg {
 #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_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 
@@ -409,6 +418,8 @@ struct i2c_msg {
 #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
@@ -422,6 +433,17 @@ struct i2c_msg {
                                   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 | \
@@ -429,16 +451,20 @@ struct i2c_msg {
                             I2C_FUNC_SMBUS_WORD_DATA | \
                             I2C_FUNC_SMBUS_PROC_CALL | \
                             I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \
-                            I2C_FUNC_SMBUS_I2C_BLOCK | \
-                            I2C_FUNC_SMBUS_I2C_BLOCK_2
+                            I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC | \
+                            I2C_FUNC_SMBUS_I2C_BLOCK
 
 /* 
  * Data for SMBus Messages 
  */
+#define I2C_SMBUS_BLOCK_MAX	32	/* As specified in SMBus standard */	
+#define I2C_SMBUS_I2C_BLOCK_MAX	32	/* Not specified but we use same structure */
 union i2c_smbus_data {
 	__u8 byte;
 	__u16 word;
-	__u8 block[33]; /* 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 */
@@ -454,6 +480,11 @@ union i2c_smbus_data {
 #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:
@@ -479,6 +510,7 @@ union i2c_smbus_data {
 
 #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