Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6

* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: (44 commits) i2c-s3c2410: Fix bug in releasing driver i2c-s3c2410: Fix I2C SDA to SCL setup time i2c: New i2c-tiny-usb bus driver i2c: Documentation update i2c: SPIN_LOCK_UNLOCKED cleanup i2c: Obsolete i2c-ixp2000, i2c-ixp4xx and scx200_i2c i2c: New Simtec I2C bus driver i2c: Bitbanging I2C bus driver using the GPIO API Use menuconfig objects - I2C i2c: Restore i2c_smbus_read_block_data i2c-pxa: Clean transaction stop i2c-algo-bit: Improve debugging i2c-algo-bit: Implement a 50/50 SCL duty cycle i2c-omap: Switch to static adapter numbering i2c: Blackfin Two Wire Interface driver i2c-algo-sgi: Comment and whitespace cleanups i2c: Make i2c_del_driver a void function i2c: Move i2c-isa-only exported symbol declarations i2c: Document i2c_new_device() i2c: Add i2c_new_probed_device() ... Fixed trivial conflict in Documentation/feature-removal-schedule.txt manually. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
author: Linus Torvalds <torvalds@woody.linux-foundation.org> 2007-05-04 17:46:27 -0700
committer: Linus Torvalds <torvalds@woody.linux-foundation.org> 2007-05-04 17:46:27 -0700
commit: 8d41f0e8d51742aba5bbcab9acb5238a8578c917 (patch)
tree: c69e7ffaf2a8598283422d20643154a298d08293 /drivers
parent: 8bc8493063f938c932819958a7b5a0d56046bc96 (diff)
parent: 5b68790cd5e2879067bcbc45b01eeb6081e7d731 (diff)
46 files changed, 2528 insertions, 540 deletions
diff --git a/drivers/Makefile b/drivers/Makefile
index 920c975bb6d..26ca9031ea4 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -58,7 +58,7 @@ obj-$(CONFIG_GAMEPORT)		+= input/gameport/
 obj-$(CONFIG_INPUT)		+= input/
 obj-$(CONFIG_I2O)		+= message/
 obj-$(CONFIG_RTC_LIB)		+= rtc/
-obj-$(CONFIG_I2C)		+= i2c/
+obj-y				+= i2c/
 obj-$(CONFIG_W1)		+= w1/
 obj-$(CONFIG_HWMON)		+= hwmon/
 obj-$(CONFIG_PHONE)		+= telephony/
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 11935f66fcd..434a61b415a 100644
--- a/drivers/i2c/Kconfig
+++ b/drivers/i2c/Kconfig
@@ -2,9 +2,7 @@
 # I2C subsystem configuration
 #
 
-menu "I2C support"
-
-config I2C
+menuconfig I2C
 	tristate "I2C support"
 	---help---
 	  I2C (pronounce: I-square-C) is a slow serial bus protocol used in
@@ -22,9 +20,14 @@ config I2C
 	  This I2C support can also be built as a module.  If so, the module
 	  will be called i2c-core.
 
+if I2C
+
+config I2C_BOARDINFO
+	boolean
+	default y
+
 config I2C_CHARDEV
 	tristate "I2C device interface"
-	depends on I2C
 	help
 	  Say Y here to use i2c-* device files, usually found in the /dev
 	  directory on your system.  They make it possible to have user-space
@@ -40,7 +43,6 @@ source drivers/i2c/chips/Kconfig
 
 config I2C_DEBUG_CORE
 	bool "I2C Core debugging messages"
-	depends on I2C
 	help
 	  Say Y here if you want the I2C core to produce a bunch of debug
 	  messages to the system log.  Select this if you are having a
@@ -48,7 +50,6 @@ config I2C_DEBUG_CORE
 
 config I2C_DEBUG_ALGO
 	bool "I2C Algorithm debugging messages"
-	depends on I2C
 	help
 	  Say Y here if you want the I2C algorithm drivers to produce a bunch
 	  of debug messages to the system log.  Select this if you are having
@@ -57,7 +58,6 @@ config I2C_DEBUG_ALGO
 
 config I2C_DEBUG_BUS
 	bool "I2C Bus debugging messages"
-	depends on I2C
 	help
 	  Say Y here if you want the I2C bus drivers to produce a bunch of
 	  debug messages to the system log.  Select this if you are having
@@ -66,12 +66,10 @@ config I2C_DEBUG_BUS
 
 config I2C_DEBUG_CHIP
 	bool "I2C Chip debugging messages"
-	depends on I2C
 	help
 	  Say Y here if you want the I2C chip drivers to produce a bunch of
 	  debug messages to the system log.  Select this if you are having
 	  a problem with I2C support and want to see more of what is going
 	  on.
 
-endmenu
-
+endif # I2C
diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile
index 71c5a854ac5..ba26e6cbe74 100644
--- a/drivers/i2c/Makefile
+++ b/drivers/i2c/Makefile
@@ -2,6 +2,7 @@
 # Makefile for the i2c core.
 #
 
+obj-$(CONFIG_I2C_BOARDINFO)	+= i2c-boardinfo.o
 obj-$(CONFIG_I2C)		+= i2c-core.o
 obj-$(CONFIG_I2C_CHARDEV)	+= i2c-dev.o
 obj-y				+= busses/ chips/ algos/
diff --git a/drivers/i2c/algos/Kconfig b/drivers/i2c/algos/Kconfig
index af0203409dd..58899078810 100644
--- a/drivers/i2c/algos/Kconfig
+++ b/drivers/i2c/algos/Kconfig
@@ -3,11 +3,9 @@
 #
 
 menu "I2C Algorithms"
-	depends on I2C
 
 config I2C_ALGOBIT
 	tristate "I2C bit-banging interfaces"
-	depends on I2C
 	help
 	  This allows you to use a range of I2C adapters called bit-banging
 	  adapters.  Say Y if you own an I2C adapter belonging to this class
@@ -18,7 +16,6 @@ config I2C_ALGOBIT
 
 config I2C_ALGOPCF
 	tristate "I2C PCF 8584 interfaces"
-	depends on I2C
 	help
 	  This allows you to use a range of I2C adapters called PCF adapters.
 	  Say Y if you own an I2C adapter belonging to this class and then say
@@ -29,7 +26,6 @@ config I2C_ALGOPCF
 
 config I2C_ALGOPCA
 	tristate "I2C PCA 9564 interfaces"
-	depends on I2C
 	help
 	  This allows you to use a range of I2C adapters called PCA adapters.
 	  Say Y if you own an I2C adapter belonging to this class and then say
@@ -40,11 +36,11 @@ config I2C_ALGOPCA
 
 config I2C_ALGO8XX
 	tristate "MPC8xx CPM I2C interface"
-	depends on 8xx && I2C
+	depends on 8xx
 
 config I2C_ALGO_SGI
 	tristate "I2C SGI interfaces"
-	depends on I2C && (SGI_IP22 || SGI_IP32 || X86_VISWS)
+	depends on SGI_IP22 || SGI_IP32 || X86_VISWS
 	help
 	  Supports the SGI interfaces like the ones found on SGI Indy VINO
 	  or SGI O2 MACE.
diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c
index 95aa5395a5b..8a5f5825bb7 100644
--- a/drivers/i2c/algos/i2c-algo-bit.c
+++ b/drivers/i2c/algos/i2c-algo-bit.c
@@ -33,19 +33,30 @@
 
 
 /* ----- global defines ----------------------------------------------- */
-#define DEB(x) if (i2c_debug>=1) x;
-#define DEB2(x) if (i2c_debug>=2) x;
-#define DEBSTAT(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 */
 
+#ifdef DEBUG
+#define bit_dbg(level, dev, format, args...) \
+	do { \
+		if (i2c_debug >= level) \
+			dev_dbg(dev, format, ##args); \
+	} while (0)
+#else
+#define bit_dbg(level, dev, format, args...) \
+	do {} while (0)
+#endif /* DEBUG */
 
 /* ----- global variables ---------------------------------------------	*/
 
-/* module parameters:
- */
-static int i2c_debug;
 static int bit_test;	/* see if the line-setting functions work	*/
+module_param(bit_test, bool, 0);
+MODULE_PARM_DESC(bit_test, "Test the lines of the bus to see if it is stuck");
+
+#ifdef DEBUG
+static int i2c_debug = 1;
+module_param(i2c_debug, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(i2c_debug,
+		 "debug level - 0 off; 1 normal; 2 verbose; 3 very verbose");
+#endif
 
 /* --- setting states on the bus with the right timing: ---------------	*/
 
@@ -57,19 +68,19 @@ static int bit_test;	/* see if the line-setting functions work	*/
 static inline void sdalo(struct i2c_algo_bit_data *adap)
 {
 	setsda(adap,0);
-	udelay(adap->udelay);
+	udelay((adap->udelay + 1) / 2);
 }
 
 static inline void sdahi(struct i2c_algo_bit_data *adap)
 {
 	setsda(adap,1);
-	udelay(adap->udelay);
+	udelay((adap->udelay + 1) / 2);
 }
 
 static inline void scllo(struct i2c_algo_bit_data *adap)
 {
 	setscl(adap,0);
-	udelay(adap->udelay);
+	udelay(adap->udelay / 2);
 }
 
 /*
@@ -98,7 +109,11 @@ static int sclhi(struct i2c_algo_bit_data *adap)
 		}
 		cond_resched();
 	}
-	DEBSTAT(printk(KERN_DEBUG "needed %ld jiffies\n", jiffies-start));
+#ifdef DEBUG
+	if (jiffies != start && i2c_debug >= 3)
+		pr_debug("i2c-algo-bit: needed %ld jiffies for SCL to go "
+			 "high\n", jiffies - start);
+#endif
 
 done:
 	udelay(adap->udelay);
@@ -110,30 +125,29 @@ done:
 static void i2c_start(struct i2c_algo_bit_data *adap) 
 {
 	/* assert: scl, sda are high */
-	DEBPROTO(printk("S "));
-	sdalo(adap);
+	setsda(adap, 0);
+	udelay(adap->udelay);
 	scllo(adap);
 }
 
 static void i2c_repstart(struct i2c_algo_bit_data *adap) 
 {
-	/* scl, sda may not be high */
-	DEBPROTO(printk(" Sr "));
-	setsda(adap,1);
+	/* assert: scl is low */
+	sdahi(adap);
 	sclhi(adap);
-	
-	sdalo(adap);
+	setsda(adap, 0);
+	udelay(adap->udelay);
 	scllo(adap);
 }
 
 
 static void i2c_stop(struct i2c_algo_bit_data *adap) 
 {
-	DEBPROTO(printk("P\n"));
 	/* assert: scl is low */
 	sdalo(adap);
 	sclhi(adap); 
-	sdahi(adap);
+	setsda(adap, 1);
+	udelay(adap->udelay);
 }
 
 
@@ -145,7 +159,7 @@ static void i2c_stop(struct i2c_algo_bit_data *adap)
  * 0 if the device did not ack
  * -ETIMEDOUT if an error occurred (while raising the scl line)
  */
-static int i2c_outb(struct i2c_adapter *i2c_adap, char c)
+static int i2c_outb(struct i2c_adapter *i2c_adap, unsigned char c)
 {
 	int i;
 	int sb;
@@ -154,34 +168,32 @@ static int i2c_outb(struct i2c_adapter *i2c_adap, char c)
 
 	/* assert: scl is low */
 	for ( i=7 ; i>=0 ; i-- ) {
-		sb = c & ( 1 << i );
+		sb = (c >> i) & 1;
 		setsda(adap,sb);
-		udelay(adap->udelay);
-		DEBPROTO(printk(KERN_DEBUG "%d",sb!=0));
+		udelay((adap->udelay + 1) / 2);
 		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));
+			bit_dbg(1, &i2c_adap->dev, "i2c_outb: 0x%02x, "
+				"timeout at bit #%d\n", (int)c, i);
 			return -ETIMEDOUT;
 		};
 		/* do arbitration here: 
 		 * if ( sb && ! getsda(adap) ) -> ouch! Get out of here.
 		 */
-		setscl(adap, 0 );
-		udelay(adap->udelay);
+		scllo(adap);
 	}
 	sdahi(adap);
 	if (sclhi(adap)<0){ /* timeout */
-	    DEB2(printk(KERN_DEBUG " i2c_outb: 0x%02x, timeout at ack\n", c&0xff));
-	    return -ETIMEDOUT;
+		bit_dbg(1, &i2c_adap->dev, "i2c_outb: 0x%02x, "
+			"timeout at ack\n", (int)c);
+		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: 0x%02x , getsda() = %d\n", c & 0xff, ack));
+	ack = !getsda(adap);    /* ack: sda is pulled low -> success */
+	bit_dbg(2, &i2c_adap->dev, "i2c_outb: 0x%02x %s\n", (int)c,
+		ack ? "A" : "NA");
 
-	DEBPROTO( printk(KERN_DEBUG "[%2.2x]",c&0xff) );
-	DEBPROTO(if (0==ack){ printk(KERN_DEBUG " A ");} else printk(KERN_DEBUG " NA ") );
 	scllo(adap);
-	return 0==ack;		/* return 1 if device acked	 */
+	return ack;
 	/* assert: scl is low (sda undef) */
 }
 
@@ -198,19 +210,18 @@ static int i2c_inb(struct i2c_adapter *i2c_adap)
 	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));
+			bit_dbg(1, &i2c_adap->dev, "i2c_inb: timeout at bit "
+				"#%d\n", 7 - i);
 			return -ETIMEDOUT;
 		};
 		indata *= 2;
 		if ( getsda(adap) ) 
 			indata |= 0x01;
-		scllo(adap);
+		setscl(adap, 0);
+		udelay(i == 7 ? adap->udelay / 2 : adap->udelay);
 	}
 	/* 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);
+	return indata;
 }
 
 /*
@@ -221,73 +232,67 @@ 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");
+		pr_info("%s: Testing SDA only, SCL is not readable\n", name);
 
 	sda=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(KERN_WARNING "i2c-algo-bit.o: %s seems to be busy.\n", name);
+		printk(KERN_WARNING "%s: bus seems to be busy\n", name);
 		goto bailout;
 	}
 
 	sdalo(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");
+		printk(KERN_WARNING "%s: SDA stuck high!\n", name);
 		goto bailout;
 	}
 	if ( 0 == scl ) {
-		printk(KERN_WARNING "i2c-algo-bit.o: SCL unexpected low "
-			"while pulling SDA low!\n");
+		printk(KERN_WARNING "%s: SCL unexpected low "
+		       "while pulling SDA low!\n", name);
 		goto bailout;
 	}		
 
 	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");
+		printk(KERN_WARNING "%s: SDA stuck low!\n", name);
 		goto bailout;
 	}
 	if ( 0 == scl ) {
-		printk(KERN_WARNING "i2c-algo-bit.o: SCL unexpected low "
-			"while pulling SDA high!\n");
+		printk(KERN_WARNING "%s: SCL unexpected low "
+		       "while pulling SDA high!\n", name);
 		goto bailout;
 	}
 
 	scllo(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");
+		printk(KERN_WARNING "%s: SCL stuck high!\n", name);
 		goto bailout;
 	}
 	if ( 0 == sda ) {
-		printk(KERN_WARNING "i2c-algo-bit.o: SDA unexpected low "
-			"while pulling SCL low!\n");
+		printk(KERN_WARNING "%s: SDA unexpected low "
+		       "while pulling SCL low!\n", name);
 		goto bailout;
 	}
 	
 	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");
+		printk(KERN_WARNING "%s: SCL stuck low!\n", name);
 		goto bailout;
 	}
 	if ( 0 == sda ) {
-		printk(KERN_WARNING "i2c-algo-bit.o: SDA unexpected low "
-			"while pulling SCL high!\n");
+		printk(KERN_WARNING "%s: SDA unexpected low "
+		       "while pulling SCL high!\n", name);
 		goto bailout;
 	}
-	printk(KERN_INFO "i2c-algo-bit.o: %s passed test.\n",name);
+	pr_info("%s: Test OK\n", name);
 	return 0;
 bailout:
 	sdahi(adap);
@@ -312,44 +317,39 @@ static int try_address(struct i2c_adapter *i2c_adap,
 	int i,ret = -1;
 	for (i=0;i<=retries;i++) {
 		ret = i2c_outb(i2c_adap,addr);
-		if (ret==1)
-			break;	/* success! */
-		i2c_stop(adap);
-		udelay(5/*adap->udelay*/);
-		if (i==retries)  /* no success */
+		if (ret == 1 || i == retries)
 			break;
-		i2c_start(adap);
+		bit_dbg(3, &i2c_adap->dev, "emitting stop condition\n");
+		i2c_stop(adap);
 		udelay(adap->udelay);
+		yield();
+		bit_dbg(3, &i2c_adap->dev, "emitting start condition\n");
+		i2c_start(adap);
 	}
-	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?" )
-	    );
+	if (i && ret)
+		bit_dbg(1, &i2c_adap->dev, "Used %d tries to %s client at "
+			"0x%02x: %s\n", i + 1,
+			addr & 1 ? "read from" : "write to", addr >> 1,
+			ret == 1 ? "success" : "failed, timeout?");
 	return ret;
 }
 
 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 = msg->buf;
+	const unsigned char *temp = msg->buf;
 	int count = msg->len;
 	unsigned short nak_ok = msg->flags & I2C_M_IGNORE_NAK; 
 	int retval;
 	int wrcount=0;
 
 	while (count > 0) {
-		c = *temp;
-		DEB2(dev_dbg(&i2c_adap->dev, "sendbytes: writing %2.2X\n", c&0xff));
-		retval = i2c_outb(i2c_adap,c);
+		retval = i2c_outb(i2c_adap, *temp);
 		if ((retval>0) || (nak_ok && (retval==0)))  { /* ok or ignored NAK */
 			count--; 
 			temp++;
 			wrcount++;
 		} else { /* arbitration or no acknowledge */
 			dev_err(&i2c_adap->dev, "sendbytes: error - bailout.\n");
-			i2c_stop(adap);
 			return (retval<0)? retval : -EFAULT;
 			        /* got a better one ?? */
 		}
@@ -362,7 +362,7 @@ static int readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
 	int inval;
 	int rdcount=0;   	/* counts bytes read */
 	struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
-	char *temp = msg->buf;
+	unsigned char *temp = msg->buf;
 	int count = msg->len;
 
 	while (count > 0) {
@@ -371,30 +371,44 @@ static int readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
 			*temp = inval;
 			rdcount++;
 		} else {   /* read timed out */
-			printk(KERN_ERR "i2c-algo-bit.o: readbytes: i2c_inb timed out.\n");
 			break;
 		}
 
 		temp++;
 		count--;
 
-		if (msg->flags & I2C_M_NO_RD_ACK)
+		if (msg->flags & I2C_M_NO_RD_ACK) {
+			bit_dbg(2, &i2c_adap->dev, "i2c_inb: 0x%02x\n",
+				inval);
 			continue;
-
-		if ( count > 0 ) {		/* send ack */
-			sdalo(adap);
-			DEBPROTO(printk(" Am "));
-		} else {
-			sdahi(adap);	/* neg. ack on last byte */
-			DEBPROTO(printk(" NAm "));
 		}
+
+		/* assert: sda is high */
+		if (count)		/* send ack */
+			setsda(adap, 0);
+		udelay((adap->udelay + 1) / 2);
+		bit_dbg(2, &i2c_adap->dev, "i2c_inb: 0x%02x %s\n", inval,
+			count ? "A" : "NA");
 		if (sclhi(adap)<0) {	/* timeout */
-			sdahi(adap);
-			printk(KERN_ERR "i2c-algo-bit.o: readbytes: Timeout at ack\n");
+			dev_err(&i2c_adap->dev, "readbytes: timeout at ack\n");
 			return -ETIMEDOUT;
 		};
 		scllo(adap);
-		sdahi(adap);
+
+		/* Some SMBus transactions require that we receive the
+		   transaction length as the first read byte. */
+		if (rdcount == 1 && (msg->flags & I2C_M_RECV_LEN)) {
+			if (inval <= 0 || inval > I2C_SMBUS_BLOCK_MAX) {
+				dev_err(&i2c_adap->dev, "readbytes: invalid "
+					"block length (%d)\n", inval);
+				return -EREMOTEIO;
+			}
+			/* The original count value accounts for the extra
+			   bytes, that is, either 1 for a regular transaction,
+			   or 2 for a PEC transaction. */
+			count += inval;
+			msg->len += inval;
+		}
 	}
 	return rdcount;
 }
@@ -421,27 +435,31 @@ static int bit_doAddress(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
 	if ( (flags & I2C_M_TEN)  ) { 
 		/* a ten bit address */
 		addr = 0xf0 | (( msg->addr >> 7) & 0x03);
-		DEB2(printk(KERN_DEBUG "addr0: %d\n",addr));
+		bit_dbg(2, &i2c_adap->dev, "addr0: %d\n", addr);
 		/* try extended address code...*/
 		ret = try_address(i2c_adap, addr, retries);
 		if ((ret != 1) && !nak_ok)  {
-			printk(KERN_ERR "died at extended address code.\n");
+			dev_err(&i2c_adap->dev,
+				"died at extended address code\n");
 			return -EREMOTEIO;
 		}
 		/* the remaining 8 bit address */
 		ret = i2c_outb(i2c_adap,msg->addr & 0x7f);
 		if ((ret != 1) && !nak_ok) {
 			/* the chip did not ack / xmission error occurred */
-			printk(KERN_ERR "died at 2nd address code.\n");
+			dev_err(&i2c_adap->dev, "died at 2nd address code\n");
 			return -EREMOTEIO;
 		}
 		if ( flags & I2C_M_RD ) {
+			bit_dbg(3, &i2c_adap->dev, "emitting repeated "
+				"start condition\n");
 			i2c_repstart(adap);
 			/* okay, now switch into reading mode */
 			addr |= 0x01;
 			ret = try_address(i2c_adap, addr, retries);
 			if ((ret!=1) && !nak_ok) {
-				printk(KERN_ERR "died at extended address code.\n");
+				dev_err(&i2c_adap->dev,
+					"died at repeated address code\n");
 				return -EREMOTEIO;
 			}
 		}
@@ -468,44 +486,62 @@ static int bit_xfer(struct i2c_adapter *i2c_adap,
 	int i,ret;
 	unsigned short nak_ok;
 
+	bit_dbg(3, &i2c_adap->dev, "emitting start condition\n");
 	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) {
+				bit_dbg(3, &i2c_adap->dev, "emitting "
+					"repeated start condition\n");
 				i2c_repstart(adap);
 			}
 			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;
+				bit_dbg(1, &i2c_adap->dev, "NAK from "
+					"device addr 0x%02x msg #%d\n",
+					msgs[i].addr, i);
+				goto bailout;
 			}
 		}
 		if (pmsg->flags & I2C_M_RD ) {
 			/* read bytes into buffer*/
 			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;
+			if (ret >= 1)
+				bit_dbg(2, &i2c_adap->dev, "read %d byte%s\n",
+					ret, ret == 1 ? "" : "s");
+			if (ret < pmsg->len) {
+				if (ret >= 0)
+					ret = -EREMOTEIO;
+				goto bailout;
 			}
 		} else {
 			/* write bytes from buffer */
 			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;
+			if (ret >= 1)
+				bit_dbg(2, &i2c_adap->dev, "wrote %d byte%s\n",
+					ret, ret == 1 ? "" : "s");
+			if (ret < pmsg->len) {
+				if (ret >= 0)
+					ret = -EREMOTEIO;
+				goto bailout;
 			}
 		}
 	}
+	ret = i;
+
+bailout:
+	bit_dbg(3, &i2c_adap->dev, "emitting stop condition\n");
 	i2c_stop(adap);
-	return num;
+	return ret;
 }
 
 static u32 bit_func(struct i2c_adapter *adap)
 {
 	return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL | 
+	       I2C_FUNC_SMBUS_READ_BLOCK_DATA |
+	       I2C_FUNC_SMBUS_BLOCK_PROC_CALL |
 	       I2C_FUNC_10BIT_ADDR | I2C_FUNC_PROTOCOL_MANGLING;
 }
 
@@ -520,7 +556,7 @@ static const struct i2c_algorithm i2c_bit_algo = {
 /* 
  * registering functions to load algorithms at runtime 
  */
-int i2c_bit_add_bus(struct i2c_adapter *adap)
+static int i2c_bit_prepare_bus(struct i2c_adapter *adap)
 {
 	struct i2c_algo_bit_data *bit_adap = adap->algo_data;
 
@@ -530,25 +566,39 @@ int i2c_bit_add_bus(struct i2c_adapter *adap)
 			return -ENODEV;
 	}
 
-	DEB2(dev_dbg(&adap->dev, "hw routines registered.\n"));
-
 	/* register new adapter to i2c module... */
 	adap->algo = &i2c_bit_algo;
 
 	adap->timeout = 100;	/* default values, should	*/
 	adap->retries = 3;	/* be replaced by defines	*/
 
+	return 0;
+}
+
+int i2c_bit_add_bus(struct i2c_adapter *adap)
+{
+	int err;
+
+	err = i2c_bit_prepare_bus(adap);
+	if (err)
+		return err;
+
 	return i2c_add_adapter(adap);
 }
 EXPORT_SYMBOL(i2c_bit_add_bus);
 
+int i2c_bit_add_numbered_bus(struct i2c_adapter *adap)
+{
+	int err;
+
+	err = i2c_bit_prepare_bus(adap);
+	if (err)
+		return err;
+
+	return i2c_add_numbered_adapter(adap);
+}
+EXPORT_SYMBOL(i2c_bit_add_numbered_bus);
+
 MODULE_AUTHOR("Simon G. Vogl <simon@tk.uni-linz.ac.at>");
 MODULE_DESCRIPTION("I2C-Bus bit-banging algorithm");
 MODULE_LICENSE("GPL");
-
-module_param(bit_test, bool, 0);
-module_param(i2c_debug, int, S_IRUGO | S_IWUSR);
-
-MODULE_PARM_DESC(bit_test, "Test the lines of the bus to see if it is stuck");
-MODULE_PARM_DESC(i2c_debug,
-		 "debug level - 0 off; 1 normal; 2,3 more verbose; 9 bit-protocol");
diff --git a/drivers/i2c/algos/i2c-algo-sgi.c b/drivers/i2c/algos/i2c-algo-sgi.c
index ac2d5053078..6eaf145e1ad 100644
--- a/drivers/i2c/algos/i2c-algo-sgi.c
+++ b/drivers/i2c/algos/i2c-algo-sgi.c
@@ -1,6 +1,7 @@
 /*
- * i2c-algo-sgi.c: i2c driver algorithms for SGI adapters.
- * 
+ * i2c-algo-sgi.c: i2c driver algorithm used by the VINO (SGI Indy) and
+ * MACE (SGI O2) chips.
+ *
  * This file is subject to the terms and conditions of the GNU General Public
  * License version 2 as published by the Free Software Foundation.
  *
@@ -162,8 +163,8 @@ static const struct i2c_algorithm sgi_algo = {
 	.functionality	= sgi_func,
 };
 
-/* 
- * registering functions to load algorithms at runtime 
+/*
+ * registering functions to load algorithms at runtime
  */
 int i2c_sgi_add_bus(struct i2c_adapter *adap)
 {
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index ece31d2c6c6..838dc1c19d6 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -3,11 +3,10 @@
 #
 
 menu "I2C Hardware Bus support"
-	depends on I2C
 
 config I2C_ALI1535
 	tristate "ALI 1535"
-	depends on I2C && PCI
+	depends on PCI
 	help
 	  If you say yes to this option, support will be included for the SMB
 	  Host controller on Acer Labs Inc. (ALI) M1535 South Bridges.  The SMB
@@ -19,7 +18,7 @@ config I2C_ALI1535
 
 config I2C_ALI1563
 	tristate "ALI 1563"
-	depends on I2C && PCI && EXPERIMENTAL
+	depends on PCI && EXPERIMENTAL
 	help
 	  If you say yes to this option, support will be included for the SMB
 	  Host controller on Acer Labs Inc. (ALI) M1563 South Bridges.  The SMB
@@ -31,7 +30,7 @@ config I2C_ALI1563
 
 config I2C_ALI15X3
 	tristate "ALI 15x3"
-	depends on I2C && PCI
+	depends on PCI
 	help
 	  If you say yes to this option, support will be included for the
 	  Acer Labs Inc. (ALI) M1514 and M1543 motherboard I2C interfaces.
@@ -41,7 +40,7 @@ config I2C_ALI15X3
 
 config I2C_AMD756
 	tristate "AMD 756/766/768/8111 and nVidia nForce"
-	depends on I2C && PCI
+	depends on PCI
 	help
 	  If you say yes to this option, support will be included for the AMD
 	  756/766/768 mainboard I2C interfaces.  The driver also includes
@@ -66,7 +65,7 @@ config I2C_AMD756_S4882
 
 config I2C_AMD8111
 	tristate "AMD 8111"
-	depends on I2C && PCI
+	depends on PCI
 	help
 	  If you say yes to this option, support will be included for the
 	  second (SMBus 2.0) AMD 8111 mainboard I2C interface.
@@ -76,14 +75,14 @@ config I2C_AMD8111
 
 config I2C_AT91
 	tristate "Atmel AT91 I2C Two-Wire interface (TWI)"
-	depends on I2C && ARCH_AT91 && EXPERIMENTAL
+	depends on ARCH_AT91 && EXPERIMENTAL
 	help
 	  This supports the use of the I2C interface on Atmel AT91
 	  processors.
 
 config I2C_AU1550
 	tristate "Au1550/Au1200 SMBus interface"
-	depends on I2C && (SOC_AU1550 || SOC_AU1200)
+	depends on SOC_AU1550 || SOC_AU1200
 	help
 	  If you say yes to this option, support will be included for the
 	  Au1550 and Au1200 SMBus interface.
@@ -91,9 +90,25 @@ config I2C_AU1550
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-au1550.
 
+config I2C_BLACKFIN_TWI
+	tristate "Blackfin TWI I2C support"
+	depends on BF534 || BF536 || BF537
+	help
+	  This is the TWI I2C device driver for Blackfin 534/536/537.
+	  This driver can also be built as a module.  If so, the module
+	  will be called i2c-bfin-twi.
+
+config I2C_BLACKFIN_TWI_CLK_KHZ
+	int "Blackfin TWI I2C clock (kHz)"
+	depends on I2C_BLACKFIN_TWI
+	range 10 400
+	default 50
+	help
+	  The unit of the TWI clock is kHz.
+
 config I2C_ELEKTOR
 	tristate "Elektor ISA card"
-	depends on I2C && ISA && BROKEN_ON_SMP
+	depends on ISA && BROKEN_ON_SMP
 	select I2C_ALGOPCF
 	help
 	  This supports the PCF8584 ISA bus I2C adapter.  Say Y if you own
@@ -102,9 +117,17 @@ config I2C_ELEKTOR
 	  This support is also available as a module.  If so, the module 
 	  will be called i2c-elektor.
 
+config I2C_GPIO
+	tristate "GPIO-based bitbanging I2C"
+	depends on GENERIC_GPIO
+	select I2C_ALGOBIT
+	help
+	  This is a very simple bitbanging I2C driver utilizing the
+	  arch-neutral GPIO API to control the SCL and SDA lines.
+
 config I2C_HYDRA
 	tristate "CHRP Apple Hydra Mac I/O I2C interface"
-	depends on I2C && PCI && PPC_CHRP && EXPERIMENTAL
+	depends on PCI && PPC_CHRP && EXPERIMENTAL
 	select I2C_ALGOBIT
 	help
 	  This supports the use of the I2C interface in the Apple Hydra Mac
@@ -116,7 +139,7 @@ config I2C_HYDRA
 
 config I2C_I801
 	tristate "Intel 82801 (ICH)"
-	depends on I2C && PCI
+	depends on PCI
 	help
 	  If you say yes to this option, support will be included for the Intel
 	  801 family of mainboard I2C interfaces.  Specifically, the following
@@ -139,7 +162,7 @@ config I2C_I801
 
 config I2C_I810
 	tristate "Intel 810/815"
-	depends on I2C && PCI
+	depends on PCI
 	select I2C_ALGOBIT
 	help
 	  If you say yes to this option, support will be included for the Intel
@@ -156,7 +179,7 @@ config I2C_I810
 
 config I2C_PXA
 	tristate "Intel PXA2XX I2C adapter (EXPERIMENTAL)"
-	depends on I2C && EXPERIMENTAL && ARCH_PXA
+	depends on EXPERIMENTAL && ARCH_PXA
 	help
 	  If you have devices in the PXA I2C bus, say yes to this option.
 	  This driver can also be built as a module.  If so, the module
@@ -172,7 +195,7 @@ config I2C_PXA_SLAVE
 
 config I2C_PIIX4
 	tristate "Intel PIIX4 and compatible (ATI/Serverworks/Broadcom/SMSC)"
-	depends on I2C && PCI
+	depends on PCI
 	help
 	  If you say yes to this option, support will be included for the Intel
 	  PIIX4 family of mainboard I2C interfaces.  Specifically, the following
@@ -195,7 +218,7 @@ config I2C_PIIX4
 
 config I2C_IBM_IIC
 	tristate "IBM PPC 4xx on-chip I2C interface"
-	depends on IBM_OCP && I2C
+	depends on IBM_OCP
 	help
 	  Say Y here if you want to use IIC peripheral found on 
 	  embedded IBM PPC 4xx based systems. 
@@ -205,7 +228,7 @@ config I2C_IBM_IIC
 
 config I2C_IOP3XX
 	tristate "Intel IOPx3xx and IXP4xx on-chip I2C interface"
-	depends on (ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX || ARCH_IOP13XX) && I2C
+	depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX || ARCH_IOP13XX
 	help
 	  Say Y here if you want to use the IIC bus controller on
 	  the Intel IOPx3xx I/O Processors or IXP4xx Network Processors.
@@ -215,11 +238,10 @@ config I2C_IOP3XX
 
 config I2C_ISA
 	tristate
-	depends on I2C
 
 config I2C_IXP4XX
-	tristate "IXP4xx GPIO-Based I2C Interface"
-	depends on I2C && ARCH_IXP4XX
+	tristate "IXP4xx GPIO-Based I2C Interface (DEPRECATED)"
+	depends on ARCH_IXP4XX
 	select I2C_ALGOBIT
 	help
 	  Say Y here if you have an Intel IXP4xx(420,421,422,425) based 
@@ -228,9 +250,12 @@ config I2C_IXP4XX
 	  This support is also available as a module. If so, the module
 	  will be called i2c-ixp4xx.
 
+	  This driver is deprecated and will be dropped soon. Use i2c-gpio
+	  instead.
+
 config I2C_IXP2000
-	tristate "IXP2000 GPIO-Based I2C Interface"
-	depends on I2C && ARCH_IXP2000
+	tristate "IXP2000 GPIO-Based I2C Interface (DEPRECATED)"
+	depends on ARCH_IXP2000
 	select I2C_ALGOBIT
 	help
 	  Say Y here if you have an Intel IXP2000(2400, 2800, 2850) based 
@@ -239,9 +264,12 @@ config I2C_IXP2000
 	  This support is also available as a module. If so, the module
 	  will be called i2c-ixp2000.
 
+	  This driver is deprecated and will be dropped soon. Use i2c-gpio
+	  instead.
+
 config I2C_POWERMAC
 	tristate "Powermac I2C interface"
-	depends on I2C && PPC_PMAC
+	depends on PPC_PMAC
 	default y
 	help
 	  This exposes the various PowerMac i2c interfaces to the linux i2c
@@ -253,7 +281,7 @@ config I2C_POWERMAC
 
 config I2C_MPC
 	tristate "MPC107/824x/85xx/52xx/86xx"
-	depends on I2C && PPC32
+	depends on PPC32
 	help
 	  If you say yes to this option, support will be included for the
 	  built-in I2C interface on the MPC107/Tsi107/MPC8240/MPC8245 and
@@ -265,7 +293,7 @@ config I2C_MPC
 
 config I2C_NFORCE2
 	tristate "Nvidia nForce2, nForce3 and nForce4"
-	depends on I2C && PCI
+	depends on PCI
 	help
 	  If you say yes to this option, support will be included for the Nvidia
 	  nForce2, nForce3 and nForce4 families of mainboard I2C interfaces.
@@ -275,7 +303,7 @@ config I2C_NFORCE2
 
 config I2C_OCORES
 	tristate "OpenCores I2C Controller"
-	depends on I2C && EXPERIMENTAL
+	depends on EXPERIMENTAL
 	help
 	  If you say yes to this option, support will be included for the
 	  OpenCores I2C controller. For details see
@@ -286,7 +314,7 @@ config I2C_OCORES
 
 config I2C_OMAP
 	tristate "OMAP I2C adapter"
-	depends on I2C && ARCH_OMAP
+	depends on ARCH_OMAP
 	default y if MACH_OMAP_H3 || MACH_OMAP_OSK
 	help
 	  If you say yes to this option, support will be included for the
@@ -296,7 +324,7 @@ config I2C_OMAP
 
 config I2C_PARPORT
 	tristate "Parallel port adapter"
-	depends on I2C && PARPORT
+	depends on PARPORT
 	select I2C_ALGOBIT
 	help
 	  This supports parallel port I2C adapters such as the ones made by
@@ -320,7 +348,6 @@ config I2C_PARPORT
 
 config I2C_PARPORT_LIGHT
 	tristate "Parallel port adapter (light)"
-	depends on I2C
 	select I2C_ALGOBIT
 	help
 	  This supports parallel port I2C adapters such as the ones made by
@@ -344,13 +371,13 @@ config I2C_PARPORT_LIGHT
 
 config I2C_PASEMI
 	tristate "PA Semi SMBus interface"
-	depends on PPC_PASEMI && I2C && PCI
+	depends on PPC_PASEMI && PCI
 	help
 	  Supports the PA Semi PWRficient on-chip SMBus interfaces.
 
 config I2C_PROSAVAGE
 	tristate "S3/VIA (Pro)Savage"
-	depends on I2C && PCI
+	depends on PCI
 	select I2C_ALGOBIT
 	help
 	  If you say yes to this option, support will be included for the
@@ -365,19 +392,19 @@ config I2C_PROSAVAGE
 
 config I2C_RPXLITE
 	tristate "Embedded Planet RPX Lite/Classic support"
-	depends on (RPXLITE || RPXCLASSIC) && I2C
+	depends on RPXLITE || RPXCLASSIC
 	select I2C_ALGO8XX
 
 config I2C_S3C2410
 	tristate "S3C2410 I2C Driver"
-	depends on I2C && ARCH_S3C2410
+	depends on ARCH_S3C2410
 	help
 	  Say Y here to include support for I2C controller in the
 	  Samsung S3C2410 based System-on-Chip devices.
 
 config I2C_SAVAGE4
 	tristate "S3 Savage 4"
-	depends on I2C && PCI && EXPERIMENTAL
+	depends on PCI && EXPERIMENTAL
 	select I2C_ALGOBIT
 	help
 	  If you say yes to this option, support will be included for the 
@@ -388,13 +415,25 @@ config I2C_SAVAGE4
 
 config I2C_SIBYTE
 	tristate "SiByte SMBus interface"
-	depends on SIBYTE_SB1xxx_SOC && I2C
+	depends on SIBYTE_SB1xxx_SOC
 	help
 	  Supports the SiByte SOC on-chip I2C interfaces (2 channels).
 
+config I2C_SIMTEC
+	tristate "Simtec Generic I2C interface"
+	select I2C_ALGOBIT
+	help
+	  If you say yes to this option, support will be inclyded for
+	  the Simtec Generic I2C interface. This driver is for the
+	  simple I2C bus used on newer Simtec products for general
+	  I2C, such as DDC on the Simtec BBD2016A.
+
+	  This driver can also be build as a module. If so, the module
+	  will be called i2c-simtec.
+
 config SCx200_I2C
-	tristate "NatSemi SCx200 I2C using GPIO pins"
-	depends on SCx200_GPIO && I2C
+	tristate "NatSemi SCx200 I2C using GPIO pins (DEPRECATED)"
+	depends on SCx200_GPIO
 	select I2C_ALGOBIT
 	help
 	  Enable the use of two GPIO pins of a SCx200 processor as an I2C bus.
@@ -404,6 +443,9 @@ config SCx200_I2C
 	  This support is also available as a module.  If so, the module 
 	  will be called scx200_i2c.
 
+	  This driver is deprecated and will be dropped soon. Use i2c-gpio
+	  (or scx200_acb) instead.
+
 config SCx200_I2C_SCL
 	int "GPIO pin used for SCL"
 	depends on SCx200_I2C
@@ -422,7 +464,7 @@ config SCx200_I2C_SDA
 
 config SCx200_ACB
 	tristate "Geode ACCESS.bus support"
-	depends on X86_32 && I2C && PCI
+	depends on X86_32 && PCI
 	help
 	  Enable the use of the ACCESS.bus controllers on the Geode SCx200 and
 	  SC1100 processors and the CS5535 and CS5536 Geode companion devices.
@@ -434,7 +476,7 @@ config SCx200_ACB
 
 config I2C_SIS5595
 	tristate "SiS 5595"
-	depends on I2C && PCI
+	depends on PCI
 	help
 	  If you say yes to this option, support will be included for the 
 	  SiS5595 SMBus (a subset of I2C) interface.
@@ -444,7 +486,7 @@ config I2C_SIS5595
 
 config I2C_SIS630
 	tristate "SiS 630/730"
-	depends on I2C && PCI
+	depends on PCI
 	help
 	  If you say yes to this option, support will be included for the 
 	  SiS630 and SiS730 SMBus (a subset of I2C) interface.
@@ -454,7 +496,7 @@ config I2C_SIS630
 
 config I2C_SIS96X
 	tristate "SiS 96x"
-	depends on I2C && PCI
+	depends on PCI
 	help
 	  If you say yes to this option, support will be included for the SiS
 	  96x SMBus (a subset of I2C) interfaces.  Specifically, the following
@@ -472,7 +514,7 @@ config I2C_SIS96X
 
 config I2C_STUB
 	tristate "I2C/SMBus Test Stub"
-	depends on I2C && EXPERIMENTAL && 'm'
+	depends on EXPERIMENTAL && m
 	default 'n'
 	help
 	  This module may be useful to developers of SMBus client drivers,
@@ -483,9 +525,20 @@ config I2C_STUB
 
 	  If you don't know what to do here, definitely say N.
 
+config I2C_TINY_USB
+	tristate "I2C-Tiny-USB"
+	depends on USB
+	help
+	  If you say yes to this option, support will be included for the
+	  i2c-tiny-usb, a simple do-it-yourself USB to I2C interface. See
+	  http://www.harbaum.org/till/i2c_tiny_usb for hardware details.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called i2c-tiny-usb.
+
 config I2C_VERSATILE
 	tristate "ARM Versatile/Realview I2C bus support"
-	depends on I2C && (ARCH_VERSATILE || ARCH_REALVIEW)
+	depends on ARCH_VERSATILE || ARCH_REALVIEW
 	select I2C_ALGOBIT
 	help
 	  Say yes if you want to support the I2C serial bus on ARMs Versatile
@@ -496,7 +549,7 @@ config I2C_VERSATILE
 
 config I2C_ACORN
 	bool "Acorn IOC/IOMD I2C bus support"
-	depends on I2C && ARCH_ACORN
+	depends on ARCH_ACORN
 	default y
 	select I2C_ALGOBIT
 	help
@@ -506,7 +559,7 @@ config I2C_ACORN
 
 config I2C_VIA
 	tristate "VIA 82C586B"
-	depends on I2C && PCI && EXPERIMENTAL
+	depends on PCI && EXPERIMENTAL
 	select I2C_ALGOBIT
 	help
 	  If you say yes to this option, support will be included for the VIA
@@ -517,7 +570,7 @@ config I2C_VIA
 
 config I2C_VIAPRO
 	tristate "VIA VT82C596/82C686/82xx and CX700"
-	depends on I2C && PCI
+	depends on PCI
 	help
 	  If you say yes to this option, support will be included for the VIA
 	  VT82C596 and later SMBus interface.  Specifically, the following
@@ -536,7 +589,7 @@ config I2C_VIAPRO
 
 config I2C_VOODOO3
 	tristate "Voodoo 3"
-	depends on I2C && PCI
+	depends on PCI
 	select I2C_ALGOBIT
 	help
 	  If you say yes to this option, support will be included for the
@@ -547,7 +600,7 @@ config I2C_VOODOO3
 
 config I2C_PCA_ISA
 	tristate "PCA9564 on an ISA bus"
-	depends on I2C
+	depends on ISA
 	select I2C_ALGOPCA
 	default n
 	help
@@ -564,7 +617,7 @@ config I2C_PCA_ISA
 
 config I2C_MV64XXX
 	tristate "Marvell mv64xxx I2C Controller"
-	depends on I2C && MV64X60 && EXPERIMENTAL
+	depends on MV64X60 && EXPERIMENTAL
 	help
 	  If you say yes to this option, support will be included for the
 	  built-in I2C interface on the Marvell 64xxx line of host bridges.
@@ -574,7 +627,7 @@ config I2C_MV64XXX
 
 config I2C_PNX
 	tristate "I2C bus support for Philips PNX targets"
-	depends on ARCH_PNX4008 && I2C
+	depends on ARCH_PNX4008
 	help
 	  This driver supports the Philips IP3204 I2C IP block master and/or
 	  slave controller
diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
index 290b5401835..14d1432f698 100644
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@@ -10,7 +10,9 @@ obj-$(CONFIG_I2C_AMD756_S4882)	+= i2c-amd756-s4882.o
 obj-$(CONFIG_I2C_AMD8111)	+= i2c-amd8111.o
 obj-$(CONFIG_I2C_AT91)		+= i2c-at91.o
 obj-$(CONFIG_I2C_AU1550)	+= i2c-au1550.o
+obj-$(CONFIG_I2C_BLACKFIN_TWI)	+= i2c-bfin-twi.o
 obj-$(CONFIG_I2C_ELEKTOR)	+= i2c-elektor.o
+obj-$(CONFIG_I2C_GPIO)		+= i2c-gpio.o
 obj-$(CONFIG_I2C_HYDRA)		+= i2c-hydra.o
 obj-$(CONFIG_I2C_I801)		+= i2c-i801.o
 obj-$(CONFIG_I2C_I810)		+= i2c-i810.o
@@ -37,10 +39,12 @@ obj-$(CONFIG_I2C_RPXLITE)	+= i2c-rpx.o
 obj-$(CONFIG_I2C_S3C2410)	+= i2c-s3c2410.o
 obj-$(CONFIG_I2C_SAVAGE4)	+= i2c-savage4.o
 obj-$(CONFIG_I2C_SIBYTE)	+= i2c-sibyte.o
+obj-$(CONFIG_I2C_SIMTEC)	+= i2c-simtec.o
 obj-$(CONFIG_I2C_SIS5595)	+= i2c-sis5595.o
 obj-$(CONFIG_I2C_SIS630)	+= i2c-sis630.o
 obj-$(CONFIG_I2C_SIS96X)	+= i2c-sis96x.o
 obj-$(CONFIG_I2C_STUB)		+= i2c-stub.o
+obj-$(CONFIG_I2C_TINY_USB)	+= i2c-tiny-usb.o
 obj-$(CONFIG_I2C_VERSATILE)	+= i2c-versatile.o
 obj-$(CONFIG_I2C_ACORN)		+= i2c-acorn.o
 obj-$(CONFIG_I2C_VIA)		+= i2c-via.o
diff --git a/drivers/i2c/busses/i2c-ali1535.c b/drivers/i2c/busses/i2c-ali1535.c
index 1e277ba5a9f..f14372ac2fc 100644
--- a/drivers/i2c/busses/i2c-ali1535.c
+++ b/drivers/i2c/busses/i2c-ali1535.c
@@ -497,7 +497,7 @@ static int __devinit ali1535_probe(struct pci_dev *dev, const struct pci_device_
 	/* set up the sysfs linkage to our parent device */
 	ali1535_adapter.dev.parent = &dev->dev;
 
-	snprintf(ali1535_adapter.name, I2C_NAME_SIZE, 
+	snprintf(ali1535_adapter.name, sizeof(ali1535_adapter.name),
 		"SMBus ALI1535 adapter at %04x", ali1535_smba);
 	return i2c_add_adapter(&ali1535_adapter);
 }
diff --git a/drivers/i2c/busses/i2c-ali15x3.c b/drivers/i2c/busses/i2c-ali15x3.c
index e47fe01bf42..93bf87d7096 100644
--- a/drivers/i2c/busses/i2c-ali15x3.c
+++ b/drivers/i2c/busses/i2c-ali15x3.c
@@ -492,7 +492,7 @@ static int __devinit ali15x3_probe(struct pci_dev *dev, const struct pci_device_
 	/* set up the sysfs linkage to our parent device */
 	ali15x3_adapter.dev.parent = &dev->dev;
 
-	snprintf(ali15x3_adapter.name, I2C_NAME_SIZE,
+	snprintf(ali15x3_adapter.name, sizeof(ali15x3_adapter.name),
 		"SMBus ALI15X3 adapter at %04x", ali15x3_smba);
 	return i2c_add_adapter(&ali15x3_adapter);
 }
diff --git a/drivers/i2c/busses/i2c-amd8111.c b/drivers/i2c/busses/i2c-amd8111.c
index 0c70f829334..c9fca7b4926 100644
--- a/drivers/i2c/busses/i2c-amd8111.c
+++ b/drivers/i2c/busses/i2c-amd8111.c
@@ -365,7 +365,7 @@ static int __devinit amd8111_probe(struct pci_dev *dev,
 	}
 
 	smbus->adapter.owner = THIS_MODULE;
-	snprintf(smbus->adapter.name, I2C_NAME_SIZE,
+	snprintf(smbus->adapter.name, sizeof(smbus->adapter.name),
 		"SMBus2 AMD8111 adapter at %04x", smbus->base);
 	smbus->adapter.id = I2C_HW_SMBUS_AMD8111;
 	smbus->adapter.class = I2C_CLASS_HWMON;
diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c
new file mode 100644
index 00000000000..6311039dfe6
--- /dev/null
+++ b/drivers/i2c/busses/i2c-bfin-twi.c
@@ -0,0 +1,644 @@
+/*
+ * drivers/i2c/busses/i2c-bfin-twi.c
+ *
+ * Description: Driver for Blackfin Two Wire Interface
+ *
+ * Author:      sonicz  <sonic.zhang@analog.com>
+ *
+ * Copyright (c) 2005-2007 Analog Devices, Inc.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/mm.h>
+#include <linux/timer.h>
+#include <linux/spinlock.h>
+#include <linux/completion.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+
+#include <asm/blackfin.h>
+#include <asm/irq.h>
+
+#define POLL_TIMEOUT       (2 * HZ)
+
+/* SMBus mode*/
+#define TWI_I2C_MODE_STANDARD		0x01
+#define TWI_I2C_MODE_STANDARDSUB	0x02
+#define TWI_I2C_MODE_COMBINED		0x04
+
+struct bfin_twi_iface {
+	struct mutex		twi_lock;
+	int			irq;
+	spinlock_t		lock;
+	char			read_write;
+	u8			command;
+	u8			*transPtr;
+	int			readNum;
+	int			writeNum;
+	int			cur_mode;
+	int			manual_stop;
+	int			result;
+	int			timeout_count;
+	struct timer_list	timeout_timer;
+	struct i2c_adapter	adap;
+	struct completion	complete;
+};
+
+static struct bfin_twi_iface twi_iface;
+
+static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface)
+{
+	unsigned short twi_int_status = bfin_read_TWI_INT_STAT();
+	unsigned short mast_stat = bfin_read_TWI_MASTER_STAT();
+
+	if (twi_int_status & XMTSERV) {
+		/* Transmit next data */
+		if (iface->writeNum > 0) {
+			bfin_write_TWI_XMT_DATA8(*(iface->transPtr++));
+			iface->writeNum--;
+		}
+		/* start receive immediately after complete sending in
+		 * combine mode.
+		 */
+		else if (iface->cur_mode == TWI_I2C_MODE_COMBINED) {
+			bfin_write_TWI_MASTER_CTL(bfin_read_TWI_MASTER_CTL()
+				| MDIR | RSTART);
+		} else if (iface->manual_stop)
+			bfin_write_TWI_MASTER_CTL(bfin_read_TWI_MASTER_CTL()
+				| STOP);
+		SSYNC();
+		/* Clear status */
+		bfin_write_TWI_INT_STAT(XMTSERV);
+		SSYNC();
+	}
+	if (twi_int_status & RCVSERV) {
+		if (iface->readNum > 0) {
+			/* Receive next data */
+			*(iface->transPtr) = bfin_read_TWI_RCV_DATA8();
+			if (iface->cur_mode == TWI_I2C_MODE_COMBINED) {
+				/* Change combine mode into sub mode after
+				 * read first data.
+				 */
+				iface->cur_mode = TWI_I2C_MODE_STANDARDSUB;
+				/* Get read number from first byte in block
+				 * combine mode.
+				 */
+				if (iface->readNum == 1 && iface->manual_stop)
+					iface->readNum = *iface->transPtr + 1;
+			}
+			iface->transPtr++;
+			iface->readNum--;
+		} else if (iface->manual_stop) {
+			bfin_write_TWI_MASTER_CTL(bfin_read_TWI_MASTER_CTL()
+				| STOP);
+			SSYNC();
+		}
+		/* Clear interrupt source */
+		bfin_write_TWI_INT_STAT(RCVSERV);
+		SSYNC();
+	}
+	if (twi_int_status & MERR) {
+		bfin_write_TWI_INT_STAT(MERR);
+		bfin_write_TWI_INT_MASK(0);
+		bfin_write_TWI_MASTER_STAT(0x3e);
+		bfin_write_TWI_MASTER_CTL(0);
+		SSYNC();
+		iface->result = -1;
+		/* if both err and complete int stats are set, return proper
+		 * results.
+		 */
+		if (twi_int_status & MCOMP) {
+			bfin_write_TWI_INT_STAT(MCOMP);
+			bfin_write_TWI_INT_MASK(0);
+			bfin_write_TWI_MASTER_CTL(0);
+			SSYNC();
+			/* If it is a quick transfer, only address bug no data,
+			 * not an err, return 1.
+			 */
+			if (iface->writeNum == 0 && (mast_stat & BUFRDERR))
+				iface->result = 1;
+			/* If address not acknowledged return -1,
+			 * else return 0.
+			 */
+			else if (!(mast_stat & ANAK))
+				iface->result = 0;
+		}
+		complete(&iface->complete);
+		return;
+	}
+	if (twi_int_status & MCOMP) {
+		bfin_write_TWI_INT_STAT(MCOMP);
+		SSYNC();
+		if (iface->cur_mode == TWI_I2C_MODE_COMBINED) {
+			if (iface->readNum == 0) {
+				/* set the read number to 1 and ask for manual
+				 * stop in block combine mode
+				 */
+				iface->readNum = 1;
+				iface->manual_stop = 1;
+				bfin_write_TWI_MASTER_CTL(
+					bfin_read_TWI_MASTER_CTL()
+					| (0xff << 6));
+			} else {
+				/* set the readd number in other
+				 * combine mode.
+				 */
+				bfin_write_TWI_MASTER_CTL(
+					(bfin_read_TWI_MASTER_CTL() &
+					(~(0xff << 6))) |
+					( iface->readNum << 6));
+			}
+			/* remove restart bit and enable master receive */
+			bfin_write_TWI_MASTER_CTL(bfin_read_TWI_MASTER_CTL() &
+				~RSTART);
+			bfin_write_TWI_MASTER_CTL(bfin_read_TWI_MASTER_CTL() |
+				MEN | MDIR);
+			SSYNC();
+		} else {
+			iface->result = 1;
+			bfin_write_TWI_INT_MASK(0);
+			bfin_write_TWI_MASTER_CTL(0);
+			SSYNC();
+			complete(&iface->complete);
+		}
+	}
+}
+
+/* Interrupt handler */
+static irqreturn_t bfin_twi_interrupt_entry(int irq, void *dev_id)
+{
+	struct bfin_twi_iface *iface = dev_id;
+	unsigned long flags;
+
+	spin_lock_irqsave(&iface->lock, flags);
+	del_timer(&iface->timeout_timer);
+	bfin_twi_handle_interrupt(iface);
+	spin_unlock_irqrestore(&iface->lock, flags);
+	return IRQ_HANDLED;
+}
+
+static void bfin_twi_timeout(unsigned long data)
+{
+	struct bfin_twi_iface *iface = (struct bfin_twi_iface *)data;
+	unsigned long flags;
+
+	spin_lock_irqsave(&iface->lock, flags);
+	bfin_twi_handle_interrupt(iface);
+	if (iface->result == 0) {
+		iface->timeout_count--;
+		if (iface->timeout_count > 0) {
+			iface->timeout_timer.expires = jiffies + POLL_TIMEOUT;
+			add_timer(&iface->timeout_timer);
+		} else {
+			iface->result = -1;
+			complete(&iface->complete);
+		}
+	}
+	spin_unlock_irqrestore(&iface->lock, flags);
+}
+
+/*
+ * Generic i2c master transfer entrypoint
+ */
+static int bfin_twi_master_xfer(struct i2c_adapter *adap,
+				struct i2c_msg *msgs, int num)
+{
+	struct bfin_twi_iface *iface = adap->algo_data;
+	struct i2c_msg *pmsg;
+	int i, ret;
+	int rc = 0;
+
+	if (!(bfin_read_TWI_CONTROL() & TWI_ENA))
+		return -ENXIO;
+
+	mutex_lock(&iface->twi_lock);
+
+	while (bfin_read_TWI_MASTER_STAT() & BUSBUSY) {
+		mutex_unlock(&iface->twi_lock);
+		yield();
+		mutex_lock(&iface->twi_lock);
+	}
+
+	ret = 0;
+	for (i = 0; rc >= 0 && i < num; i++) {
+		pmsg = &msgs[i];
+		if (pmsg->flags & I2C_M_TEN) {
+			dev_err(&(adap->dev), "i2c-bfin-twi: 10 bits addr "
+				"not supported !\n");
+			rc = -EINVAL;
+			break;
+		}
+
+		iface->cur_mode = TWI_I2C_MODE_STANDARD;
+		iface->manual_stop = 0;
+		iface->transPtr = pmsg->buf;
+		iface->writeNum = iface->readNum = pmsg->len;
+		iface->result = 0;
+		iface->timeout_count = 10;
+		/* Set Transmit device address */
+		bfin_write_TWI_MASTER_ADDR(pmsg->addr);
+
+		/* FIFO Initiation. Data in FIFO should be
+		 *  discarded before start a new operation.
+		 */
+		bfin_write_TWI_FIFO_CTL(0x3);
+		SSYNC();
+		bfin_write_TWI_FIFO_CTL(0);
+		SSYNC();
+
+		if (pmsg->flags & I2C_M_RD)
+			iface->read_write = I2C_SMBUS_READ;
+		else {
+			iface->read_write = I2C_SMBUS_WRITE;
+			/* Transmit first data */
+			if (iface->writeNum > 0) {
+				bfin_write_TWI_XMT_DATA8(*(iface->transPtr++));
+				iface->writeNum--;
+				SSYNC();
+			}
+		}
+
+		/* clear int stat */
+		bfin_write_TWI_INT_STAT(MERR|MCOMP|XMTSERV|RCVSERV);
+
+		/* Interrupt mask . Enable XMT, RCV interrupt */
+		bfin_write_TWI_INT_MASK(MCOMP | MERR |
+			((iface->read_write == I2C_SMBUS_READ)?
+			RCVSERV : XMTSERV));
+		SSYNC();
+
+		if (pmsg->len > 0 && pmsg->len <= 255)
+			bfin_write_TWI_MASTER_CTL(pmsg->len << 6);
+		else if (pmsg->len > 255) {
+			bfin_write_TWI_MASTER_CTL(0xff << 6);
+			iface->manual_stop = 1;
+		} else
+			break;
+
+		iface->timeout_timer.expires = jiffies + POLL_TIMEOUT;
+		add_timer(&iface->timeout_timer);
+
+		/* Master enable */
+		bfin_write_TWI_MASTER_CTL(bfin_read_TWI_MASTER_CTL() | MEN |
+			((iface->read_write == I2C_SMBUS_READ) ? MDIR : 0) |
+			((CONFIG_I2C_BLACKFIN_TWI_CLK_KHZ>100) ? FAST : 0));
+		SSYNC();
+
+		wait_for_completion(&iface->complete);
+
+		rc = iface->result;
+		if (rc == 1)
+			ret++;
+		else if (rc == -1)
+			break;
+	}
+
+	/* Release mutex */
+	mutex_unlock(&iface->twi_lock);
+
+	return ret;
+}
+
+/*
+ * SMBus type transfer entrypoint
+ */
+
+int bfin_twi_smbus_xfer(struct i2c_adapter *adap, u16 addr,
+			unsigned short flags, char read_write,
+			u8 command, int size, union i2c_smbus_data *data)
+{
+	struct bfin_twi_iface *iface = adap->algo_data;
+	int rc = 0;
+
+	if (!(bfin_read_TWI_CONTROL() & TWI_ENA))
+		return -ENXIO;
+
+	mutex_lock(&iface->twi_lock);
+
+	while (bfin_read_TWI_MASTER_STAT() & BUSBUSY) {
+		mutex_unlock(&iface->twi_lock);
+		yield();
+		mutex_lock(&iface->twi_lock);
+	}
+
+	iface->writeNum = 0;
+	iface->readNum = 0;
+
+	/* Prepare datas & select mode */
+	switch (size) {
+	case I2C_SMBUS_QUICK:
+		iface->transPtr = NULL;
+		iface->cur_mode = TWI_I2C_MODE_STANDARD;
+		break;
+	case I2C_SMBUS_BYTE:
+		if (data == NULL)
+			iface->transPtr = NULL;
+		else {
+			if (read_write == I2C_SMBUS_READ)
+				iface->readNum = 1;
+			else
+				iface->writeNum = 1;
+			iface->transPtr = &data->byte;
+		}
+		iface->cur_mode = TWI_I2C_MODE_STANDARD;
+		break;
+	case I2C_SMBUS_BYTE_DATA:
+		if (read_write == I2C_SMBUS_READ) {
+			iface->readNum = 1;
+			iface->cur_mode = TWI_I2C_MODE_COMBINED;
+		} else {
+			iface->writeNum = 1;
+			iface->cur_mode = TWI_I2C_MODE_STANDARDSUB;
+		}
+		iface->transPtr = &data->byte;
+		break;
+	case I2C_SMBUS_WORD_DATA:
+		if (read_write == I2C_SMBUS_READ) {
+			iface->readNum = 2;
+			iface->cur_mode = TWI_I2C_MODE_COMBINED;
+		} else {
+			iface->writeNum = 2;
+			iface->cur_mode = TWI_I2C_MODE_STANDARDSUB;
+		}
+		iface->transPtr = (u8 *)&data->word;
+		break;
+	case I2C_SMBUS_PROC_CALL:
+		iface->writeNum = 2;
+		iface->readNum = 2;
+		iface->cur_mode = TWI_I2C_MODE_COMBINED;
+		iface->transPtr = (u8 *)&data->word;
+		break;
+	case I2C_SMBUS_BLOCK_DATA:
+		if (read_write == I2C_SMBUS_READ) {
+			iface->readNum = 0;
+			iface->cur_mode = TWI_I2C_MODE_COMBINED;
+		} else {
+			iface->writeNum = data->block[0] + 1;
+			iface->cur_mode = TWI_I2C_MODE_STANDARDSUB;
+		}
+		iface->transPtr = data->block;
+		break;
+	default:
+		return -1;
+	}
+
+	iface->result = 0;
+	iface->manual_stop = 0;
+	iface->read_write = read_write;
+	iface->command = command;
+	iface->timeout_count = 10;
+
+	/* FIFO Initiation. Data in FIFO should be discarded before
+	 * start a new operation.
+	 */
+	bfin_write_TWI_FIFO_CTL(0x3);
+	SSYNC();
+	bfin_write_TWI_FIFO_CTL(0);
+
+	/* clear int stat */
+	bfin_write_TWI_INT_STAT(MERR|MCOMP|XMTSERV|RCVSERV);
+
+	/* Set Transmit device address */
+	bfin_write_TWI_MASTER_ADDR(addr);
+	SSYNC();
+
+	iface->timeout_timer.expires = jiffies + POLL_TIMEOUT;
+	add_timer(&iface->timeout_timer);
+
+	switch (iface->cur_mode) {
+	case TWI_I2C_MODE_STANDARDSUB:
+		bfin_write_TWI_XMT_DATA8(iface->command);
+		bfin_write_TWI_INT_MASK(MCOMP | MERR |
+			((iface->read_write == I2C_SMBUS_READ) ?
+			RCVSERV : XMTSERV));
+		SSYNC();
+
+		if (iface->writeNum + 1 <= 255)
+			bfin_write_TWI_MASTER_CTL((iface->writeNum + 1) << 6);
+		else {
+			bfin_write_TWI_MASTER_CTL(0xff << 6);
+			iface->manual_stop = 1;
+		}
+		/* Master enable */
+		bfin_write_TWI_MASTER_CTL(bfin_read_TWI_MASTER_CTL() | MEN |
+			((CONFIG_I2C_BLACKFIN_TWI_CLK_KHZ>100) ? FAST : 0));
+		break;
+	case TWI_I2C_MODE_COMBINED:
+		bfin_write_TWI_XMT_DATA8(iface->command);
+		bfin_write_TWI_INT_MASK(MCOMP | MERR | RCVSERV | XMTSERV);
+		SSYNC();
+
+		if (iface->writeNum > 0)
+			bfin_write_TWI_MASTER_CTL((iface->writeNum + 1) << 6);
+		else
+			bfin_write_TWI_MASTER_CTL(0x1 << 6);
+		/* Master enable */
+		bfin_write_TWI_MASTER_CTL(bfin_read_TWI_MASTER_CTL() | MEN |
+			((CONFIG_I2C_BLACKFIN_TWI_CLK_KHZ>100) ? FAST : 0));
+		break;
+	default:
+		bfin_write_TWI_MASTER_CTL(0);
+		if (size != I2C_SMBUS_QUICK) {
+			/* Don't access xmit data register when this is a
+			 * read operation.
+			 */
+			if (iface->read_write != I2C_SMBUS_READ) {
+				if (iface->writeNum > 0) {
+					bfin_write_TWI_XMT_DATA8(*(iface->transPtr++));
+					if (iface->writeNum <= 255)
+						bfin_write_TWI_MASTER_CTL(iface->writeNum << 6);
+					else {
+						bfin_write_TWI_MASTER_CTL(0xff << 6);
+						iface->manual_stop = 1;
+					}
+					iface->writeNum--;
+				} else {
+					bfin_write_TWI_XMT_DATA8(iface->command);
+					bfin_write_TWI_MASTER_CTL(1 << 6);
+				}
+			} else {
+				if (iface->readNum > 0 && iface->readNum <= 255)
+					bfin_write_TWI_MASTER_CTL(iface->readNum << 6);
+				else if (iface->readNum > 255) {
+					bfin_write_TWI_MASTER_CTL(0xff << 6);
+					iface->manual_stop = 1;
+				} else {
+					del_timer(&iface->timeout_timer);
+					break;
+				}
+			}
+		}
+		bfin_write_TWI_INT_MASK(MCOMP | MERR |
+			((iface->read_write == I2C_SMBUS_READ) ?
+			RCVSERV : XMTSERV));
+		SSYNC();
+
+		/* Master enable */
+		bfin_write_TWI_MASTER_CTL(bfin_read_TWI_MASTER_CTL() | MEN |
+			((iface->read_write == I2C_SMBUS_READ) ? MDIR : 0) |
+			((CONFIG_I2C_BLACKFIN_TWI_CLK_KHZ > 100) ? FAST : 0));
+		break;
+	}
+	SSYNC();
+
+	wait_for_completion(&iface->complete);
+
+	rc = (iface->result >= 0) ? 0 : -1;
+
+	/* Release mutex */
+	mutex_unlock(&iface->twi_lock);
+
+	return rc;
+}
+
+/*
+ * Return what the adapter supports
+ */
+static u32 bfin_twi_functionality(struct i2c_adapter *adap)
+{
+	return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
+	       I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
+	       I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_PROC_CALL |
+	       I2C_FUNC_I2C;
+}
+
+
+static struct i2c_algorithm bfin_twi_algorithm = {
+	.master_xfer   = bfin_twi_master_xfer,
+	.smbus_xfer    = bfin_twi_smbus_xfer,
+	.functionality = bfin_twi_functionality,
+};
+
+
+static int i2c_bfin_twi_suspend(struct platform_device *dev, pm_message_t state)
+{
+/*	struct bfin_twi_iface *iface = platform_get_drvdata(dev);*/
+
+	/* Disable TWI */
+	bfin_write_TWI_CONTROL(bfin_read_TWI_CONTROL() & ~TWI_ENA);
+	SSYNC();
+
+	return 0;
+}
+
+static int i2c_bfin_twi_resume(struct platform_device *dev)
+{
+/*	struct bfin_twi_iface *iface = platform_get_drvdata(dev);*/
+
+	/* Enable TWI */
+	bfin_write_TWI_CONTROL(bfin_read_TWI_CONTROL() | TWI_ENA);
+	SSYNC();
+
+	return 0;
+}
+
+static int i2c_bfin_twi_probe(struct platform_device *dev)
+{
+	struct bfin_twi_iface *iface = &twi_iface;
+	struct i2c_adapter *p_adap;
+	int rc;
+
+	mutex_init(&(iface->twi_lock));
+	spin_lock_init(&(iface->lock));
+	init_completion(&(iface->complete));
+	iface->irq = IRQ_TWI;
+
+	init_timer(&(iface->timeout_timer));
+	iface->timeout_timer.function = bfin_twi_timeout;
+	iface->timeout_timer.data = (unsigned long)iface;
+
+	p_adap = &iface->adap;
+	p_adap->id = I2C_HW_BLACKFIN;
+	strlcpy(p_adap->name, dev->name, sizeof(p_adap->name));
+	p_adap->algo = &bfin_twi_algorithm;
+	p_adap->algo_data = iface;
+	p_adap->class = I2C_CLASS_ALL;
+	p_adap->dev.parent = &dev->dev;
+
+	rc = request_irq(iface->irq, bfin_twi_interrupt_entry,
+		IRQF_DISABLED, dev->name, iface);
+	if (rc) {
+		dev_err(&(p_adap->dev), "i2c-bfin-twi: can't get IRQ %d !\n",
+			iface->irq);
+		return -ENODEV;
+	}
+
+	/* Set TWI internal clock as 10MHz */
+	bfin_write_TWI_CONTROL(((get_sclk() / 1024 / 1024 + 5) / 10) & 0x7F);
+
+	/* Set Twi interface clock as specified */
+	bfin_write_TWI_CLKDIV((( 5*1024 / CONFIG_I2C_BLACKFIN_TWI_CLK_KHZ )
+			<< 8) | (( 5*1024 / CONFIG_I2C_BLACKFIN_TWI_CLK_KHZ )
+			& 0xFF));
+
+	/* Enable TWI */
+	bfin_write_TWI_CONTROL(bfin_read_TWI_CONTROL() | TWI_ENA);
+	SSYNC();
+
+	rc = i2c_add_adapter(p_adap);
+	if (rc < 0)
+		free_irq(iface->irq, iface);
+	else
+		platform_set_drvdata(dev, iface);
+
+	return rc;
+}
+
+static int i2c_bfin_twi_remove(struct platform_device *pdev)
+{
+	struct bfin_twi_iface *iface = platform_get_drvdata(pdev);
+
+	platform_set_drvdata(pdev, NULL);
+
+	i2c_del_adapter(&(iface->adap));
+	free_irq(iface->irq, iface);
+
+	return 0;
+}
+
+static struct platform_driver i2c_bfin_twi_driver = {
+	.probe		= i2c_bfin_twi_probe,
+	.remove		= i2c_bfin_twi_remove,
+	.suspend	= i2c_bfin_twi_suspend,
+	.resume		= i2c_bfin_twi_resume,
+	.driver		= {
+		.name	= "i2c-bfin-twi",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int __init i2c_bfin_twi_init(void)
+{
+	pr_info("I2C: Blackfin I2C TWI driver\n");
+
+	return platform_driver_register(&i2c_bfin_twi_driver);
+}
+
+static void __exit i2c_bfin_twi_exit(void)
+{
+	platform_driver_unregister(&i2c_bfin_twi_driver);
+}
+
+MODULE_AUTHOR("Sonic Zhang <sonic.zhang@analog.com>");
+MODULE_DESCRIPTION("I2C-Bus adapter routines for Blackfin TWI");
+MODULE_LICENSE("GPL");
+
+module_init(i2c_bfin_twi_init);
+module_exit(i2c_bfin_twi_exit);
diff --git a/drivers/i2c/busses/i2c-elektor.c b/drivers/i2c/busses/i2c-elektor.c
index 83496746481..804f0a551c0 100644
--- a/drivers/i2c/busses/i2c-elektor.c
+++ b/drivers/i2c/busses/i2c-elektor.c
@@ -35,6 +35,7 @@
 #include <linux/pci.h>
 #include <linux/wait.h>
 
+#include <linux/isa.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-pcf.h>
 
@@ -207,7 +208,7 @@ static struct i2c_adapter pcf_isa_ops = {
 	.name		= "i2c-elektor",
 };
 
-static int __init i2c_pcfisa_init(void)
+static int __devinit elektor_match(struct device *dev, unsigned int id)
 {
 #ifdef __alpha__
 	/* check to see we have memory mapped PCF8584 connected to the
@@ -222,9 +223,8 @@ static int __init i2c_pcfisa_init(void)
 			/* yeap, we've found cypress, let's check config */
 			if (!pci_read_config_byte(cy693_dev, 0x47, &config)) {
 
-				pr_debug("%s: found cy82c693, config "
-					 "register 0x47 = 0x%02x\n",
-					 pcf_isa_ops.name, config);
+				dev_dbg(dev, "found cy82c693, config "
+					"register 0x47 = 0x%02x\n", config);
 
 				/* UP2000 board has this register set to 0xe1,
 				   but the most significant bit as seems can be
@@ -244,9 +244,9 @@ static int __init i2c_pcfisa_init(void)
 					   8.25 MHz (PCI/4) clock
 					   (this can be read from cypress) */
 					clock = I2C_PCF_CLK | I2C_PCF_TRNS90;
-					pr_info("%s: found API UP2000 like "
-						"board, will probe PCF8584 "
-						"later\n", pcf_isa_ops.name);
+					dev_info(dev, "found API UP2000 like "
+						 "board, will probe PCF8584 "
+						 "later\n");
 				}
 			}
 			pci_dev_put(cy693_dev);
@@ -256,22 +256,27 @@ static int __init i2c_pcfisa_init(void)
 
 	/* sanity checks for mmapped I/O */
 	if (mmapped && base < 0xc8000) {
-		printk(KERN_ERR "%s: incorrect base address (%#x) specified "
-		       "for mmapped I/O\n", pcf_isa_ops.name, base);
-		return -ENODEV;
+		dev_err(dev, "incorrect base address (%#x) specified "
+		       "for mmapped I/O\n", base);
+		return 0;
 	}
 
 	if (base == 0) {
 		base = DEFAULT_BASE;
 	}
+	return 1;
+}
 
+static int __devinit elektor_probe(struct device *dev, unsigned int id)
+{
 	init_waitqueue_head(&pcf_wait);
 	if (pcf_isa_init())
 		return -ENODEV;
+	pcf_isa_ops.dev.parent = dev;
 	if (i2c_pcf_add_bus(&pcf_isa_ops) < 0)
 		goto fail;
 
-	dev_info(&pcf_isa_ops.dev, "found device at %#x\n", base);
+	dev_info(dev, "found device at %#x\n", base);
 
 	return 0;
 
@@ -291,7 +296,7 @@ static int __init i2c_pcfisa_init(void)
 	return -ENODEV;
 }
 
-static void i2c_pcfisa_exit(void)
+static int __devexit elektor_remove(struct device *dev, unsigned int id)
 {
 	i2c_del_adapter(&pcf_isa_ops);
 
@@ -307,6 +312,28 @@ static void i2c_pcfisa_exit(void)
 		iounmap(base_iomem);
 		release_mem_region(base, 2);
 	}
+
+	return 0;
+}
+
+static struct isa_driver i2c_elektor_driver = {
+	.match		= elektor_match,
+	.probe		= elektor_probe,
+	.remove		= __devexit_p(elektor_remove),
+	.driver = {
+		.owner	= THIS_MODULE,
+		.name	= "i2c-elektor",
+	},
+};
+
+static int __init i2c_pcfisa_init(void)
+{
+	return isa_register_driver(&i2c_elektor_driver, 1);
+}
+
+static void __exit i2c_pcfisa_exit(void)
+{
+	isa_unregister_driver(&i2c_elektor_driver);
 }
 
 MODULE_AUTHOR("Hans Berglund <hb@spacetec.no>");
diff --git a/drivers/i2c/busses/i2c-gpio.c b/drivers/i2c/busses/i2c-gpio.c
new file mode 100644
index 00000000000..a7dd54654a9
--- /dev/null
+++ b/drivers/i2c/busses/i2c-gpio.c
@@ -0,0 +1,215 @@
+/*
+ * Bitbanging I2C bus driver using the GPIO API
+ *
+ * Copyright (C) 2007 Atmel Corporation
+ *
+ * This program 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/i2c.h>
+#include <linux/i2c-algo-bit.h>
+#include <linux/i2c-gpio.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <asm/gpio.h>
+
+/* Toggle SDA by changing the direction of the pin */
+static void i2c_gpio_setsda_dir(void *data, int state)
+{
+	struct i2c_gpio_platform_data *pdata = data;
+
+	if (state)
+		gpio_direction_input(pdata->sda_pin);
+	else
+		gpio_direction_output(pdata->sda_pin, 0);
+}
+
+/*
+ * Toggle SDA by changing the output value of the pin. This is only
+ * valid for pins configured as open drain (i.e. setting the value
+ * high effectively turns off the output driver.)
+ */
+static void i2c_gpio_setsda_val(void *data, int state)
+{
+	struct i2c_gpio_platform_data *pdata = data;
+
+	gpio_set_value(pdata->sda_pin, state);
+}
+
+/* Toggle SCL by changing the direction of the pin. */
+static void i2c_gpio_setscl_dir(void *data, int state)
+{
+	struct i2c_gpio_platform_data *pdata = data;
+
+	if (state)
+		gpio_direction_input(pdata->scl_pin);
+	else
+		gpio_direction_output(pdata->scl_pin, 0);
+}
+
+/*
+ * Toggle SCL by changing the output value of the pin. This is used
+ * for pins that are configured as open drain and for output-only
+ * pins. The latter case will break the i2c protocol, but it will
+ * often work in practice.
+ */
+static void i2c_gpio_setscl_val(void *data, int state)
+{
+	struct i2c_gpio_platform_data *pdata = data;
+
+	gpio_set_value(pdata->scl_pin, state);
+}
+
+int i2c_gpio_getsda(void *data)
+{
+	struct i2c_gpio_platform_data *pdata = data;
+
+	return gpio_get_value(pdata->sda_pin);
+}
+
+int i2c_gpio_getscl(void *data)
+{
+	struct i2c_gpio_platform_data *pdata = data;
+
+	return gpio_get_value(pdata->scl_pin);
+}
+
+static int __init i2c_gpio_probe(struct platform_device *pdev)
+{
+	struct i2c_gpio_platform_data *pdata;
+	struct i2c_algo_bit_data *bit_data;
+	struct i2c_adapter *adap;
+	int ret;
+
+	pdata = pdev->dev.platform_data;
+	if (!pdata)
+		return -ENXIO;
+
+	ret = -ENOMEM;
+	adap = kzalloc(sizeof(struct i2c_adapter), GFP_KERNEL);
+	if (!adap)
+		goto err_alloc_adap;
+	bit_data = kzalloc(sizeof(struct i2c_algo_bit_data), GFP_KERNEL);
+	if (!bit_data)
+		goto err_alloc_bit_data;
+
+	ret = gpio_request(pdata->sda_pin, "sda");
+	if (ret)
+		goto err_request_sda;
+	ret = gpio_request(pdata->scl_pin, "scl");
+	if (ret)
+		goto err_request_scl;
+
+	if (pdata->sda_is_open_drain) {
+		gpio_direction_output(pdata->sda_pin, 1);
+		bit_data->setsda = i2c_gpio_setsda_val;
+	} else {
+		gpio_direction_input(pdata->sda_pin);
+		bit_data->setsda = i2c_gpio_setsda_dir;
+	}
+
+	if (pdata->scl_is_open_drain || pdata->scl_is_output_only) {
+		gpio_direction_output(pdata->scl_pin, 1);
+		bit_data->setscl = i2c_gpio_setscl_val;
+	} else {
+		gpio_direction_input(pdata->scl_pin);
+		bit_data->setscl = i2c_gpio_setscl_dir;
+	}
+
+	if (!pdata->scl_is_output_only)
+		bit_data->getscl = i2c_gpio_getscl;
+	bit_data->getsda = i2c_gpio_getsda;
+
+	if (pdata->udelay)
+		bit_data->udelay = pdata->udelay;
+	else if (pdata->scl_is_output_only)
+		bit_data->udelay = 50;			/* 10 kHz */
+	else
+		bit_data->udelay = 5;			/* 100 kHz */
+
+	if (pdata->timeout)
+		bit_data->timeout = pdata->timeout;
+	else
+		bit_data->timeout = HZ / 10;		/* 100 ms */
+
+	bit_data->data = pdata;
+
+	adap->owner = THIS_MODULE;
+	snprintf(adap->name, sizeof(adap->name), "i2c-gpio%d", pdev->id);
+	adap->algo_data = bit_data;
+	adap->dev.parent = &pdev->dev;
+
+	ret = i2c_bit_add_bus(adap);
+	if (ret)
+		goto err_add_bus;
+
+	platform_set_drvdata(pdev, adap);
+
+	dev_info(&pdev->dev, "using pins %u (SDA) and %u (SCL%s)\n",
+		 pdata->sda_pin, pdata->scl_pin,
+		 pdata->scl_is_output_only
+		 ? ", no clock stretching" : "");
+
+	return 0;
+
+err_add_bus:
+	gpio_free(pdata->scl_pin);
+err_request_scl:
+	gpio_free(pdata->sda_pin);
+err_request_sda:
+	kfree(bit_data);
+err_alloc_bit_data:
+	kfree(adap);
+err_alloc_adap:
+	return ret;
+}
+
+static int __exit i2c_gpio_remove(struct platform_device *pdev)
+{
+	struct i2c_gpio_platform_data *pdata;
+	struct i2c_adapter *adap;
+
+	adap = platform_get_drvdata(pdev);
+	pdata = pdev->dev.platform_data;
+
+	i2c_del_adapter(adap);
+	gpio_free(pdata->scl_pin);
+	gpio_free(pdata->sda_pin);
+	kfree(adap->algo_data);
+	kfree(adap);
+
+	return 0;
+}
+
+static struct platform_driver i2c_gpio_driver = {
+	.driver		= {
+		.name	= "i2c-gpio",
+		.owner	= THIS_MODULE,
+	},
+	.remove		= __exit_p(i2c_gpio_remove),
+};
+
+static int __init i2c_gpio_init(void)
+{
+	int ret;
+
+	ret = platform_driver_probe(&i2c_gpio_driver, i2c_gpio_probe);
+	if (ret)
+		printk(KERN_ERR "i2c-gpio: probe failed: %d\n", ret);
+
+	return ret;
+}
+module_init(i2c_gpio_init);
+
+static void __exit i2c_gpio_exit(void)
+{
+	platform_driver_unregister(&i2c_gpio_driver);
+}
+module_exit(i2c_gpio_exit);
+
+MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>");
+MODULE_DESCRIPTION("Platform-independent bitbanging I2C driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index a320e7d82c1..611b57192c9 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -527,7 +527,7 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
 	/* set up the sysfs linkage to our parent device */
 	i801_adapter.dev.parent = &dev->dev;
 
-	snprintf(i801_adapter.name, I2C_NAME_SIZE,
+	snprintf(i801_adapter.name, sizeof(i801_adapter.name),
 		"SMBus I801 adapter at %04lx", i801_smba);
 	err = i2c_add_adapter(&i801_adapter);
 	if (err) {
diff --git a/drivers/i2c/busses/i2c-isa.c b/drivers/i2c/busses/i2c-isa.c
index 5f33bc9c1e0..b0e1370075d 100644
--- a/drivers/i2c/busses/i2c-isa.c
+++ b/drivers/i2c/busses/i2c-isa.c
@@ -41,6 +41,10 @@
 #include <linux/platform_device.h>
 #include <linux/completion.h>
 
+/* Exported by i2c-core for i2c-isa only */
+extern void i2c_adapter_dev_release(struct device *dev);
+extern struct class i2c_adapter_class;
+
 static u32 isa_func(struct i2c_adapter *adapter);
 
 /* This is the actual algorithm we define */
@@ -64,16 +68,6 @@ static u32 isa_func(struct i2c_adapter *adapter)
 }
 
 
-/* Copied from i2c-core */
-static ssize_t show_adapter_name(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct i2c_adapter *adap = dev_to_i2c_adapter(dev);
-	return sprintf(buf, "%s\n", adap->name);
-}
-static DEVICE_ATTR(name, S_IRUGO, show_adapter_name, NULL);
-
-
 /* We implement an interface which resembles i2c_{add,del}_driver,
    but for i2c-isa drivers. We don't have to remember and handle lists
    of drivers and adapters so this is much more simple, of course. */
@@ -139,41 +133,18 @@ static int __init i2c_isa_init(void)
 	isa_adapter.nr = ANY_I2C_ISA_BUS;
 	isa_adapter.dev.parent = &platform_bus;
 	sprintf(isa_adapter.dev.bus_id, "i2c-%d", isa_adapter.nr);
-	isa_adapter.dev.driver = &i2c_adapter_driver;
 	isa_adapter.dev.release = &i2c_adapter_dev_release;
+	isa_adapter.dev.class = &i2c_adapter_class;
 	err = device_register(&isa_adapter.dev);
 	if (err) {
 		printk(KERN_ERR "i2c-isa: Failed to register device\n");
 		goto exit;
 	}
-	err = device_create_file(&isa_adapter.dev, &dev_attr_name);
-	if (err) {
-		printk(KERN_ERR "i2c-isa: Failed to create name file\n");
-		goto exit_unregister;
-	}
-
-	/* Add this adapter to the i2c_adapter class */
-	memset(&isa_adapter.class_dev, 0x00, sizeof(struct class_device));
-	isa_adapter.class_dev.dev = &isa_adapter.dev;
-	isa_adapter.class_dev.class = &i2c_adapter_class;
-	strlcpy(isa_adapter.class_dev.class_id, isa_adapter.dev.bus_id,
-		BUS_ID_SIZE);
-	err = class_device_register(&isa_adapter.class_dev);
-	if (err) {
-		printk(KERN_ERR "i2c-isa: Failed to register class device\n");
-		goto exit_remove_name;
-	}
 
 	dev_dbg(&isa_adapter.dev, "%s registered\n", isa_adapter.name);
 
 	return 0;
 
-exit_remove_name:
-	device_remove_file(&isa_adapter.dev, &dev_attr_name);
-exit_unregister:
-	init_completion(&isa_adapter.dev_released); /* Needed? */
-	device_unregister(&isa_adapter.dev);
-	wait_for_completion(&isa_adapter.dev_released);
 exit:
 	return err;
 }
@@ -201,15 +172,11 @@ static void __exit i2c_isa_exit(void)
 	/* Clean up the sysfs representation */
 	dev_dbg(&isa_adapter.dev, "Unregistering from sysfs\n");
 	init_completion(&isa_adapter.dev_released);
-	init_completion(&isa_adapter.class_dev_released);
-	class_device_unregister(&isa_adapter.class_dev);
-	device_remove_file(&isa_adapter.dev, &dev_attr_name);
 	device_unregister(&isa_adapter.dev);
 
 	/* Wait for sysfs to drop all references */
 	dev_dbg(&isa_adapter.dev, "Waiting for sysfs completion\n");
 	wait_for_completion(&isa_adapter.dev_released);
-	wait_for_completion(&isa_adapter.class_dev_released);
 
 	dev_dbg(&isa_adapter.dev, "%s unregistered\n", isa_adapter.name);
 }
diff --git a/drivers/i2c/busses/i2c-ixp2000.c b/drivers/i2c/busses/i2c-ixp2000.c
index efa3ecc5522..6352121a282 100644
--- a/drivers/i2c/busses/i2c-ixp2000.c
+++ b/drivers/i2c/busses/i2c-ixp2000.c
@@ -118,7 +118,7 @@ static int ixp2000_i2c_probe(struct platform_device *plat_dev)
 
 	drv_data->adapter.id = I2C_HW_B_IXP2000,
 	strlcpy(drv_data->adapter.name, plat_dev->dev.driver->name,
-		I2C_NAME_SIZE);
+		sizeof(drv_data->adapter.name));
 	drv_data->adapter.algo_data = &drv_data->algo_data,
 
 	drv_data->adapter.dev.parent = &plat_dev->dev;
diff --git a/drivers/i2c/busses/i2c-ixp4xx.c b/drivers/i2c/busses/i2c-ixp4xx.c
index 08e89b83984..069ed7f3b39 100644
--- a/drivers/i2c/busses/i2c-ixp4xx.c
+++ b/drivers/i2c/busses/i2c-ixp4xx.c
@@ -127,7 +127,7 @@ static int ixp4xx_i2c_probe(struct platform_device *plat_dev)
 	drv_data->adapter.id = I2C_HW_B_IXP4XX;
 	drv_data->adapter.class = I2C_CLASS_HWMON;
 	strlcpy(drv_data->adapter.name, plat_dev->dev.driver->name,
-		I2C_NAME_SIZE);
+		sizeof(drv_data->adapter.name));
 	drv_data->adapter.algo_data = &drv_data->algo_data;
 
 	drv_data->adapter.dev.parent = &plat_dev->dev;
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index a3283b907eb..a55b3335d1b 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -508,7 +508,7 @@ mv64xxx_i2c_probe(struct platform_device *pd)
 	}
 
 	strlcpy(drv_data->adapter.name, MV64XXX_I2C_CTLR_NAME " adapter",
-		I2C_NAME_SIZE);
+		sizeof(drv_data->adapter.name));
 
 	init_waitqueue_head(&drv_data->waitq);
 	spin_lock_init(&drv_data->lock);
diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c
index 1514ec5b77f..3cd0d63e7b5 100644
--- a/drivers/i2c/busses/i2c-nforce2.c
+++ b/drivers/i2c/busses/i2c-nforce2.c
@@ -33,6 +33,8 @@
     nForce4 MCP-04		0034
     nForce4 MCP51		0264
     nForce4 MCP55		0368
+    nForce MCP61		03EB
+    nForce MCP65		0446
 
     This driver supports the 2 SMBuses that are included in the MCP of the
     nForce2/3/4/5xx chipsets.
@@ -200,6 +202,8 @@ static struct pci_device_id nforce2_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SMBUS) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SMBUS) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SMBUS) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SMBUS) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP65_SMBUS) },
 	{ 0 }
 };
 
@@ -240,7 +244,7 @@ static int __devinit nforce2_probe_smb (struct pci_dev *dev, int bar,
 	smbus->adapter.algo = &smbus_algorithm;
 	smbus->adapter.algo_data = smbus;
 	smbus->adapter.dev.parent = &dev->dev;
-	snprintf(smbus->adapter.name, I2C_NAME_SIZE,
+	snprintf(smbus->adapter.name, sizeof(smbus->adapter.name),
 		"SMBus nForce2 adapter at %04x", smbus->base);
 
 	error = i2c_add_adapter(&smbus->adapter);
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index bcd8367cede..e471e3bfdc1 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -605,7 +605,8 @@ omap_i2c_probe(struct platform_device *pdev)
 	adap->dev.parent = &pdev->dev;
 
 	/* i2c device drivers may be active on return from add_adapter() */
-	r = i2c_add_adapter(adap);
+	adap->nr = pdev->id;
+	r = i2c_add_numbered_adapter(adap);
 	if (r) {
 		dev_err(dev->dev, "failure adding adapter\n");
 		goto err_free_irq;
diff --git a/drivers/i2c/busses/i2c-parport-light.c b/drivers/i2c/busses/i2c-parport-light.c
index 4bc42810b9a..49a95e2887b 100644
--- a/drivers/i2c/busses/i2c-parport-light.c
+++ b/drivers/i2c/busses/i2c-parport-light.c
@@ -1,7 +1,7 @@
 /* ------------------------------------------------------------------------ *
- * i2c-parport.c I2C bus over parallel port                                 *
+ * i2c-parport-light.c I2C bus over parallel port                           *
  * ------------------------------------------------------------------------ *
-   Copyright (C) 2003-2004 Jean Delvare <khali@linux-fr.org>
+   Copyright (C) 2003-2007 Jean Delvare <khali@linux-fr.org>
    
    Based on older i2c-velleman.c driver
    Copyright (C) 1995-2000 Simon G. Vogl
@@ -27,6 +27,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/platform_device.h>
 #include <linux/ioport.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-bit.h>
@@ -34,6 +35,9 @@
 #include "i2c-parport.h"
 
 #define DEFAULT_BASE 0x378
+#define DRVNAME "i2c-parport-light"
+
+static struct platform_device *pdev;
 
 static u16 base;
 module_param(base, ushort, 0);
@@ -106,7 +110,7 @@ static struct i2c_algo_bit_data parport_algo_data = {
 	.timeout	= HZ,
 }; 
 
-/* ----- I2c structure ---------------------------------------------------- */
+/* ----- Driver registration ---------------------------------------------- */
 
 static struct i2c_adapter parport_adapter = {
 	.owner		= THIS_MODULE,
@@ -116,55 +120,141 @@ static struct i2c_adapter parport_adapter = {
 	.name		= "Parallel port adapter (light)",
 };
 
-/* ----- Module loading, unloading and information ------------------------ */
+static int __devinit i2c_parport_probe(struct platform_device *pdev)
+{
+	int err;
+	struct resource *res;
+
+	res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+	if (!request_region(res->start, res->end - res->start + 1, DRVNAME))
+		return -EBUSY;
+
+	/* Reset hardware to a sane state (SCL and SDA high) */
+	parport_setsda(NULL, 1);
+	parport_setscl(NULL, 1);
+	/* Other init if needed (power on...) */
+	if (adapter_parm[type].init.val)
+		line_set(1, &adapter_parm[type].init);
+
+	parport_adapter.dev.parent = &pdev->dev;
+	err = i2c_bit_add_bus(&parport_adapter);
+	if (err) {
+		dev_err(&pdev->dev, "Unable to register with I2C\n");
+		goto exit_region;
+	}
+	return 0;
+
+exit_region:
+	release_region(res->start, res->end - res->start + 1);
+	return err;
+}
+
+static int __devexit i2c_parport_remove(struct platform_device *pdev)
+{
+	struct resource *res;
+
+	i2c_del_adapter(&parport_adapter);
+
+	/* Un-init if needed (power off...) */
+	if (adapter_parm[type].init.val)
+		line_set(0, &adapter_parm[type].init);
+
+	res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+	release_region(res->start, res->end - res->start + 1);
+	return 0;
+}
+
+static struct platform_driver i2c_parport_driver = {
+	.driver = {
+		.owner	= THIS_MODULE,
+		.name	= DRVNAME,
+	},
+	.probe		= i2c_parport_probe,
+	.remove		= __devexit_p(i2c_parport_remove),
+};
+
+static int __init i2c_parport_device_add(u16 address)
+{
+	struct resource res = {
+		.start	= address,
+		.end	= address + 2,
+		.name	= DRVNAME,
+		.flags	= IORESOURCE_IO,
+	};
+	int err;
+
+	pdev = platform_device_alloc(DRVNAME, -1);
+	if (!pdev) {
+		err = -ENOMEM;
+		printk(KERN_ERR DRVNAME ": Device allocation failed\n");
+		goto exit;
+	}
+
+	err = platform_device_add_resources(pdev, &res, 1);
+	if (err) {
+		printk(KERN_ERR DRVNAME ": Device resource addition failed "
+		       "(%d)\n", err);
+		goto exit_device_put;
+	}
+
+	err = platform_device_add(pdev);
+	if (err) {
+		printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
+		       err);
+		goto exit_device_put;
+	}
+
+	return 0;
+
+exit_device_put:
+	platform_device_put(pdev);
+exit:
+	return err;
+}
 
 static int __init i2c_parport_init(void)
 {
+	int err;
+
 	if (type < 0) {
-		printk(KERN_WARNING "i2c-parport: adapter type unspecified\n");
+		printk(KERN_ERR DRVNAME ": adapter type unspecified\n");
 		return -ENODEV;
 	}
 
 	if (type >= ARRAY_SIZE(adapter_parm)) {
-		printk(KERN_WARNING "i2c-parport: invalid type (%d)\n", type);
+		printk(KERN_ERR DRVNAME ": invalid type (%d)\n", type);
 		return -ENODEV;
 	}
 
 	if (base == 0) {
-		printk(KERN_INFO "i2c-parport: using default base 0x%x\n", DEFAULT_BASE);
+		pr_info(DRVNAME ": using default base 0x%x\n", DEFAULT_BASE);
 		base = DEFAULT_BASE;
 	}
 
-	if (!request_region(base, 3, "i2c-parport"))
-		return -ENODEV;
-
         if (!adapter_parm[type].getscl.val)
 		parport_algo_data.getscl = NULL;
 
-	/* Reset hardware to a sane state (SCL and SDA high) */
-	parport_setsda(NULL, 1);
-	parport_setscl(NULL, 1);
-	/* Other init if needed (power on...) */
-	if (adapter_parm[type].init.val)
-		line_set(1, &adapter_parm[type].init);
+	/* Sets global pdev as a side effect */
+	err = i2c_parport_device_add(base);
+	if (err)
+		goto exit;
 
-	if (i2c_bit_add_bus(&parport_adapter) < 0) {
-		printk(KERN_ERR "i2c-parport: Unable to register with I2C\n");
-		release_region(base, 3);
-		return -ENODEV;
-	}
+	err = platform_driver_register(&i2c_parport_driver);
+	if (err)
+		goto exit_device;
 
 	return 0;
+
+exit_device:
+	platform_device_unregister(pdev);
+exit:
+	return err;
 }
 
 static void __exit i2c_parport_exit(void)
 {
-	/* Un-init if needed (power off...) */
-	if (adapter_parm[type].init.val)
-		line_set(0, &adapter_parm[type].init);
-
-	i2c_del_adapter(&parport_adapter);
-	release_region(base, 3);
+	platform_driver_unregister(&i2c_parport_driver);
+	platform_device_unregister(pdev);
 }
 
 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
diff --git a/drivers/i2c/busses/i2c-parport.c b/drivers/i2c/busses/i2c-parport.c
index 66696a40c7b..8c953707253 100644
--- a/drivers/i2c/busses/i2c-parport.c
+++ b/drivers/i2c/busses/i2c-parport.c
@@ -1,7 +1,7 @@
 /* ------------------------------------------------------------------------ *
  * i2c-parport.c I2C bus over parallel port                                 *
  * ------------------------------------------------------------------------ *
-   Copyright (C) 2003-2004 Jean Delvare <khali@linux-fr.org>
+   Copyright (C) 2003-2007 Jean Delvare <khali@linux-fr.org>
    
    Based on older i2c-philips-par.c driver
    Copyright (C) 1995-2000 Simon G. Vogl
@@ -137,19 +137,12 @@ static struct i2c_algo_bit_data parport_algo_data = {
 	.setscl		= parport_setscl,
 	.getsda		= parport_getsda,
 	.getscl		= parport_getscl,
-	.udelay		= 60,
+	.udelay		= 10, /* ~50 kbps */
 	.timeout	= HZ,
 }; 
 
 /* ----- I2c and parallel port call-back functions and structures --------- */
 
-static struct i2c_adapter parport_adapter = {
-	.owner		= THIS_MODULE,
-	.class		= I2C_CLASS_HWMON,
-	.id		= I2C_HW_B_LP,
-	.name		= "Parallel port adapter",
-};
-
 static void i2c_parport_attach (struct parport *port)
 {
 	struct i2c_par *adapter;
@@ -169,10 +162,17 @@ static void i2c_parport_attach (struct parport *port)
 	}
 
 	/* Fill the rest of the structure */
-	adapter->adapter = parport_adapter;
+	adapter->adapter.owner = THIS_MODULE;
+	adapter->adapter.class = I2C_CLASS_HWMON;
+	adapter->adapter.id = I2C_HW_B_LP;
+	strlcpy(adapter->adapter.name, "Parallel port adapter",
+		sizeof(adapter->adapter.name));
 	adapter->algo_data = parport_algo_data;
-	if (!adapter_parm[type].getscl.val)
+	/* Slow down if we can't sense SCL */
+	if (!adapter_parm[type].getscl.val) {
 		adapter->algo_data.getscl = NULL;
+		adapter->algo_data.udelay = 50; /* ~10 kbps */
+	}
 	adapter->algo_data.data = port;
 	adapter->adapter.algo_data = &adapter->algo_data;
 
@@ -214,11 +214,12 @@ static void i2c_parport_detach (struct parport *port)
 	for (prev = NULL, adapter = adapter_list; adapter;
 	     prev = adapter, adapter = adapter->next) {
 		if (adapter->pdev->port == port) {
+			i2c_del_adapter(&adapter->adapter);
+
 			/* Un-init if needed (power off...) */
 			if (adapter_parm[type].init.val)
 				line_set(port, 0, &adapter_parm[type].init);
 				
-			i2c_del_adapter(&adapter->adapter);
 			parport_unregister_device(adapter->pdev);
 			if (prev)
 				prev->next = adapter->next;
diff --git a/drivers/i2c/busses/i2c-pasemi.c b/drivers/i2c/busses/i2c-pasemi.c
index bf89eeef74e..58e32714afb 100644
--- a/drivers/i2c/busses/i2c-pasemi.c
+++ b/drivers/i2c/busses/i2c-pasemi.c
@@ -358,7 +358,7 @@ static int __devinit pasemi_smb_probe(struct pci_dev *dev,
 	}
 
 	smbus->adapter.owner = THIS_MODULE;
-	snprintf(smbus->adapter.name, I2C_NAME_SIZE,
+	snprintf(smbus->adapter.name, sizeof(smbus->adapter.name),
 		 "PA Semi SMBus adapter at 0x%lx", smbus->base);
 	smbus->adapter.class = I2C_CLASS_HWMON;
 	smbus->adapter.algo = &smbus_algorithm;
diff --git a/drivers/i2c/busses/i2c-pca-isa.c b/drivers/i2c/busses/i2c-pca-isa.c
index cc6536a19ec..5f94e617fe0 100644
--- a/drivers/i2c/busses/i2c-pca-isa.c
+++ b/drivers/i2c/busses/i2c-pca-isa.c
@@ -28,6 +28,7 @@
 #include <linux/pci.h>
 #include <linux/wait.h>
 
+#include <linux/isa.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-pca.h>
 
@@ -119,27 +120,26 @@ static struct i2c_adapter pca_isa_ops = {
 	.name		= "PCA9564 ISA Adapter",
 };
 
-static int __init pca_isa_init(void)
+static int __devinit pca_isa_probe(struct device *dev, unsigned int id)
 {
-
 	init_waitqueue_head(&pca_wait);
 
-	printk(KERN_INFO "i2c-pca-isa: i/o base %#08lx. irq %d\n", base, irq);
+	dev_info(dev, "i/o base %#08lx. irq %d\n", base, irq);
 
 	if (!request_region(base, IO_SIZE, "i2c-pca-isa")) {
-		printk(KERN_ERR "i2c-pca-isa: I/O address %#08lx is in use.\n", base);
+		dev_err(dev, "I/O address %#08lx is in use\n", base);
 		goto out;
 	}
 
 	if (irq > -1) {
 		if (request_irq(irq, pca_handler, 0, "i2c-pca-isa", &pca_isa_ops) < 0) {
-			printk(KERN_ERR "i2c-pca-isa: Request irq%d failed\n", irq);
+			dev_err(dev, "Request irq%d failed\n", irq);
 			goto out_region;
 		}
 	}
 
 	if (i2c_pca_add_bus(&pca_isa_ops) < 0) {
-		printk(KERN_ERR "i2c-pca-isa: Failed to add i2c bus\n");
+		dev_err(dev, "Failed to add i2c bus\n");
 		goto out_irq;
 	}
 
@@ -154,7 +154,7 @@ static int __init pca_isa_init(void)
 	return -ENODEV;
 }
 
-static void pca_isa_exit(void)
+static int __devexit pca_isa_remove(struct device *dev, unsigned int id)
 {
 	i2c_del_adapter(&pca_isa_ops);
 
@@ -163,6 +163,27 @@ static void pca_isa_exit(void)
 		free_irq(irq, &pca_isa_ops);
 	}
 	release_region(base, IO_SIZE);
+
+	return 0;
+}
+
+static struct isa_driver pca_isa_driver = {
+	.probe		= pca_isa_probe,
+	.remove		= __devexit_p(pca_isa_remove),
+	.driver = {
+		.owner	= THIS_MODULE,
+		.name	= "i2c-pca-isa",
+	}
+};
+
+static int __init pca_isa_init(void)
+{
+	return isa_register_driver(&pca_isa_driver, 1);
+}
+
+static void __exit pca_isa_exit(void)
+{
+	isa_unregister_driver(&pca_isa_driver);
 }
 
 MODULE_AUTHOR("Ian Campbell <icampbell@arcom.com>");
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index 21b18090408..5a52bf5e3fb 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -428,7 +428,7 @@ static int __devinit piix4_probe(struct pci_dev *dev,
 	/* set up the sysfs linkage to our parent device */
 	piix4_adapter.dev.parent = &dev->dev;
 
-	snprintf(piix4_adapter.name, I2C_NAME_SIZE,
+	snprintf(piix4_adapter.name, sizeof(piix4_adapter.name),
 		"SMBus PIIX4 adapter at %04x", piix4_smba);
 
 	if ((retval = i2c_add_adapter(&piix4_adapter))) {
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index 14e83d0aac8..c059b27fa88 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -539,6 +539,18 @@ static inline void i2c_pxa_start_message(struct pxa_i2c *i2c)
 	writel(icr | ICR_START | ICR_TB, _ICR(i2c));
 }
 
+static inline void i2c_pxa_stop_message(struct pxa_i2c *i2c)
+{
+	u32 icr;
+
+	/*
+	 * Clear the STOP and ACK flags
+	 */
+	icr = readl(_ICR(i2c));
+	icr &= ~(ICR_STOP | ICR_ACKNAK);
+	writel(icr, _IRC(i2c));
+}
+
 /*
  * We are protected by the adapter bus mutex.
  */
@@ -581,6 +593,7 @@ static int i2c_pxa_do_xfer(struct pxa_i2c *i2c, struct i2c_msg *msg, int num)
 	 * The rest of the processing occurs in the interrupt handler.
 	 */
 	timeout = wait_event_timeout(i2c->wait, i2c->msg_num == 0, HZ * 5);
+	i2c_pxa_stop_message(i2c);
 
 	/*
 	 * We place the return code in i2c->msg_idx.
@@ -825,7 +838,7 @@ static const struct i2c_algorithm i2c_pxa_algorithm = {
 };
 
 static struct pxa_i2c i2c_pxa = {
-	.lock	= SPIN_LOCK_UNLOCKED,
+	.lock	= __SPIN_LOCK_UNLOCKED(i2c_pxa.lock),
 	.adap	= {
 		.owner		= THIS_MODULE,
 		.algo		= &i2c_pxa_algorithm,
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 556f244aae7..e68a96f589f 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -61,6 +61,8 @@ struct s3c24xx_i2c {
 	unsigned int		msg_idx;
 	unsigned int		msg_ptr;
 
+	unsigned int		tx_setup;
+
 	enum s3c24xx_i2c_state	state;
 
 	void __iomem		*regs;
@@ -199,8 +201,11 @@ static void s3c24xx_i2c_message_start(struct s3c24xx_i2c *i2c,
 	dev_dbg(i2c->dev, "START: %08lx to IICSTAT, %02x to DS\n", stat, addr);
 	writeb(addr, i2c->regs + S3C2410_IICDS);
 	
-	// delay a bit and reset iiccon before setting start (per samsung)
-	udelay(1);
+	/* delay here to ensure the data byte has gotten onto the bus
+	 * before the transaction is started */
+
+	ndelay(i2c->tx_setup);
+
 	dev_dbg(i2c->dev, "iiccon, %08lx\n", iiccon);
 	writel(iiccon, i2c->regs + S3C2410_IICCON);
 	
@@ -322,7 +327,15 @@ static int i2s_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
 		if (!is_msgend(i2c)) {
 			byte = i2c->msg->buf[i2c->msg_ptr++];
 			writeb(byte, i2c->regs + S3C2410_IICDS);
-			
+
+			/* delay after writing the byte to allow the
+			 * data setup time on the bus, as writing the
+			 * data to the register causes the first bit
+			 * to appear on SDA, and SCL will change as
+			 * soon as the interrupt is acknowledged */
+
+			ndelay(i2c->tx_setup);
+
 		} else if (!is_lastmsg(i2c)) {
 			/* we need to go to the next i2c message */
 
@@ -570,9 +583,10 @@ static const struct i2c_algorithm s3c24xx_i2c_algorithm = {
 };
 
 static struct s3c24xx_i2c s3c24xx_i2c = {
-	.lock	= SPIN_LOCK_UNLOCKED,
-	.wait	= __WAIT_QUEUE_HEAD_INITIALIZER(s3c24xx_i2c.wait),
-	.adap	= {
+	.lock		= __SPIN_LOCK_UNLOCKED(s3c24xx_i2c.lock),
+	.wait		= __WAIT_QUEUE_HEAD_INITIALIZER(s3c24xx_i2c.wait),
+	.tx_setup	= 50,
+	.adap		= {
 		.name			= "s3c2410-i2c",
 		.owner			= THIS_MODULE,
 		.algo			= &s3c24xx_i2c_algorithm,
@@ -731,26 +745,6 @@ static int s3c24xx_i2c_init(struct s3c24xx_i2c *i2c)
 	return 0;
 }
 
-static void s3c24xx_i2c_free(struct s3c24xx_i2c *i2c)
-{
-	if (i2c->clk != NULL && !IS_ERR(i2c->clk)) {
-		clk_disable(i2c->clk);
-		clk_put(i2c->clk);
-		i2c->clk = NULL;
-	}
-
-	if (i2c->regs != NULL) {
-		iounmap(i2c->regs);
-		i2c->regs = NULL;
-	}
-
-	if (i2c->ioarea != NULL) {
-		release_resource(i2c->ioarea);
-		kfree(i2c->ioarea);
-		i2c->ioarea = NULL;
-	}
-}
-
 /* s3c24xx_i2c_probe
  *
  * called by the bus driver when a suitable device is found
@@ -769,7 +763,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
 	if (IS_ERR(i2c->clk)) {
 		dev_err(&pdev->dev, "cannot get clock\n");
 		ret = -ENOENT;
-		goto out;
+		goto err_noclk;
 	}
 
 	dev_dbg(&pdev->dev, "clock source %p\n", i2c->clk);
@@ -782,7 +776,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
 	if (res == NULL) {
 		dev_err(&pdev->dev, "cannot find IO resource\n");
 		ret = -ENOENT;
-		goto out;
+		goto err_clk;
 	}
 
 	i2c->ioarea = request_mem_region(res->start, (res->end-res->start)+1,
@@ -791,7 +785,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
 	if (i2c->ioarea == NULL) {
 		dev_err(&pdev->dev, "cannot request IO\n");
 		ret = -ENXIO;
-		goto out;
+		goto err_clk;
 	}
 
 	i2c->regs = ioremap(res->start, (res->end-res->start)+1);
@@ -799,7 +793,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
 	if (i2c->regs == NULL) {
 		dev_err(&pdev->dev, "cannot map IO\n");
 		ret = -ENXIO;
-		goto out;
+		goto err_ioarea;
 	}
 
 	dev_dbg(&pdev->dev, "registers %p (%p, %p)\n", i2c->regs, i2c->ioarea, res);
@@ -813,7 +807,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
 
 	ret = s3c24xx_i2c_init(i2c);
 	if (ret != 0)
-		goto out;
+		goto err_iomap;
 
 	/* find the IRQ for this unit (note, this relies on the init call to
 	 * ensure no current IRQs pending 
@@ -823,7 +817,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
 	if (res == NULL) {
 		dev_err(&pdev->dev, "cannot find IRQ\n");
 		ret = -ENOENT;
-		goto out;
+		goto err_iomap;
 	}
 
 	ret = request_irq(res->start, s3c24xx_i2c_irq, IRQF_DISABLED,
@@ -831,7 +825,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
 
 	if (ret != 0) {
 		dev_err(&pdev->dev, "cannot claim IRQ\n");
-		goto out;
+		goto err_iomap;
 	}
 
 	i2c->irq = res;
@@ -841,17 +835,29 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
 	ret = i2c_add_adapter(&i2c->adap);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to add bus to i2c core\n");
-		goto out;
+		goto err_irq;
 	}
 
 	platform_set_drvdata(pdev, i2c);
 
 	dev_info(&pdev->dev, "%s: S3C I2C adapter\n", i2c->adap.dev.bus_id);
+	return 0;
 
- out:
-	if (ret < 0)
-		s3c24xx_i2c_free(i2c);
+ err_irq:
+	free_irq(i2c->irq->start, i2c);
+
+ err_iomap:
+	iounmap(i2c->regs);
 
+ err_ioarea:
+	release_resource(i2c->ioarea);
+	kfree(i2c->ioarea);
+
+ err_clk:
+	clk_disable(i2c->clk);
+	clk_put(i2c->clk);
+
+ err_noclk:
 	return ret;
 }
 
@@ -863,11 +869,17 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
 static int s3c24xx_i2c_remove(struct platform_device *pdev)
 {
 	struct s3c24xx_i2c *i2c = platform_get_drvdata(pdev);
-	
-	if (i2c != NULL) {
-		s3c24xx_i2c_free(i2c);
-		platform_set_drvdata(pdev, NULL);
-	}
+
+	i2c_del_adapter(&i2c->adap);
+	free_irq(i2c->irq->start, i2c);
+
+	clk_disable(i2c->clk);
+	clk_put(i2c->clk);
+
+	iounmap(i2c->regs);
+
+	release_resource(i2c->ioarea);
+	kfree(i2c->ioarea);
 
 	return 0;
 }
diff --git a/drivers/i2c/busses/i2c-simtec.c b/drivers/i2c/busses/i2c-simtec.c
new file mode 100644
index 00000000000..10af8d31e12
--- /dev/null
+++ b/drivers/i2c/busses/i2c-simtec.c
@@ -0,0 +1,186 @@
+/*
+ * Copyright (C) 2005 Simtec Electronics
+ *	Ben Dooks <ben@simtec.co.uk>
+ *
+ * Simtec Generic I2C Controller
+ *
+ * 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
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+
+#include <asm/io.h>
+
+struct simtec_i2c_data {
+	struct resource		*ioarea;
+	void __iomem		*reg;
+	struct i2c_adapter	 adap;
+	struct i2c_algo_bit_data bit;
+};
+
+#define CMD_SET_SDA	(1<<2)
+#define CMD_SET_SCL	(1<<3)
+
+#define STATE_SDA	(1<<0)
+#define STATE_SCL	(1<<1)
+
+/* i2c bit-bus functions */
+
+static void simtec_i2c_setsda(void *pw, int state)
+{
+	struct simtec_i2c_data *pd = pw;
+	writeb(CMD_SET_SDA | (state ? STATE_SDA : 0), pd->reg);
+}
+
+static void simtec_i2c_setscl(void *pw, int state)
+{
+	struct simtec_i2c_data *pd = pw;
+	writeb(CMD_SET_SCL | (state ? STATE_SCL : 0), pd->reg);
+}
+
+static int simtec_i2c_getsda(void *pw)
+{
+	struct simtec_i2c_data *pd = pw;
+	return readb(pd->reg) & STATE_SDA ? 1 : 0;
+}
+
+static int simtec_i2c_getscl(void *pw)
+{
+	struct simtec_i2c_data *pd = pw;
+	return readb(pd->reg) & STATE_SCL ? 1 : 0;
+}
+
+/* device registration */
+
+static int simtec_i2c_probe(struct platform_device *dev)
+{
+	struct simtec_i2c_data *pd;
+	struct resource *res;
+	int size;
+	int ret;
+
+	pd = kzalloc(sizeof(struct simtec_i2c_data), GFP_KERNEL);
+	if (pd == NULL) {
+		dev_err(&dev->dev, "cannot allocate private data\n");
+		return -ENOMEM;
+	}
+
+	platform_set_drvdata(dev, pd);
+
+	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+	if (res == NULL) {
+		dev_err(&dev->dev, "cannot find IO resource\n");
+		ret = -ENOENT;
+		goto err;
+	}
+
+	size = (res->end-res->start)+1;
+
+	pd->ioarea = request_mem_region(res->start, size, dev->name);
+	if (pd->ioarea == NULL) {
+		dev_err(&dev->dev, "cannot request IO\n");
+		ret = -ENXIO;
+		goto err;
+	}
+
+	pd->reg = ioremap(res->start, size);
+	if (pd->reg == NULL) {
+		dev_err(&dev->dev, "cannot map IO\n");
+		ret = -ENXIO;
+		goto err_res;
+	}
+
+	/* setup the private data */
+
+	pd->adap.owner = THIS_MODULE;
+	pd->adap.algo_data = &pd->bit;
+	pd->adap.dev.parent = &dev->dev;
+
+	strlcpy(pd->adap.name, "Simtec I2C", sizeof(pd->adap.name));
+
+	pd->bit.data = pd;
+	pd->bit.setsda = simtec_i2c_setsda;
+	pd->bit.setscl = simtec_i2c_setscl;
+	pd->bit.getsda = simtec_i2c_getsda;
+	pd->bit.getscl = simtec_i2c_getscl;
+	pd->bit.timeout = HZ;
+	pd->bit.udelay = 20;
+
+	ret = i2c_bit_add_bus(&pd->adap);
+	if (ret)
+		goto err_all;
+
+	return 0;
+
+ err_all:
+	iounmap(pd->reg);
+
+ err_res:
+	release_resource(pd->ioarea);
+	kfree(pd->ioarea);
+
+ err:
+	kfree(pd);
+	return ret;
+}
+
+static int simtec_i2c_remove(struct platform_device *dev)
+{
+	struct simtec_i2c_data *pd = platform_get_drvdata(dev);
+
+	i2c_del_adapter(&pd->adap);
+
+	iounmap(pd->reg);
+	release_resource(pd->ioarea);
+	kfree(pd->ioarea);
+	kfree(pd);
+
+	return 0;
+}
+
+
+/* device driver */
+
+static struct platform_driver simtec_i2c_driver = {
+	.driver		= {
+		.name		= "simtec-i2c",
+		.owner		= THIS_MODULE,
+	},
+	.probe		= simtec_i2c_probe,
+	.remove		= simtec_i2c_remove,
+};
+
+static int __init i2c_adap_simtec_init(void)
+{
+	return platform_driver_register(&simtec_i2c_driver);
+}
+
+static void __exit i2c_adap_simtec_exit(void)
+{
+	platform_driver_unregister(&simtec_i2c_driver);
+}
+
+module_init(i2c_adap_simtec_init);
+module_exit(i2c_adap_simtec_exit);
+
+MODULE_DESCRIPTION("Simtec Generic I2C Bus driver");
+MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/busses/i2c-sis96x.c b/drivers/i2c/busses/i2c-sis96x.c
index 4157b0cd604..dc235bb8e24 100644
--- a/drivers/i2c/busses/i2c-sis96x.c
+++ b/drivers/i2c/busses/i2c-sis96x.c
@@ -300,7 +300,7 @@ static int __devinit sis96x_probe(struct pci_dev *dev,
 	/* set up the sysfs linkage to our parent device */
 	sis96x_adapter.dev.parent = &dev->dev;
 
-	snprintf(sis96x_adapter.name, I2C_NAME_SIZE,
+	snprintf(sis96x_adapter.name, sizeof(sis96x_adapter.name),
 		"SiS96x SMBus adapter at 0x%04x", sis96x_smbus_base);
 
 	if ((retval = i2c_add_adapter(&sis96x_adapter))) {
diff --git a/drivers/i2c/busses/i2c-tiny-usb.c b/drivers/i2c/busses/i2c-tiny-usb.c
new file mode 100644
index 00000000000..907999049d5
--- /dev/null
+++ b/drivers/i2c/busses/i2c-tiny-usb.c
@@ -0,0 +1,277 @@
+/*
+ * driver for the i2c-tiny-usb adapter - 1.0
+ * http://www.harbaum.org/till/i2c_tiny_usb
+ *
+ * Copyright (C) 2006-2007 Till Harbaum (Till@Harbaum.org)
+ *
+ * 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, version 2.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+
+/* include interfaces to usb layer */
+#include <linux/usb.h>
+
+/* include interface to i2c layer */
+#include <linux/i2c.h>
+
+/* commands via USB, must match command ids in the firmware */
+#define CMD_ECHO		0
+#define CMD_GET_FUNC		1
+#define CMD_SET_DELAY		2
+#define CMD_GET_STATUS		3
+
+#define CMD_I2C_IO		4
+#define CMD_I2C_IO_BEGIN	(1<<0)
+#define CMD_I2C_IO_END		(1<<1)
+
+/* i2c bit delay, default is 10us -> 100kHz */
+static int delay = 10;
+module_param(delay, int, 0);
+MODULE_PARM_DESC(delay, "bit delay in microseconds, "
+		 "e.g. 10 for 100kHz (default is 100kHz)");
+
+static int usb_read(struct i2c_adapter *adapter, int cmd,
+		    int value, int index, void *data, int len);
+
+static int usb_write(struct i2c_adapter *adapter, int cmd,
+		     int value, int index, void *data, int len);
+
+/* ----- begin of i2c layer ---------------------------------------------- */
+
+#define STATUS_IDLE		0
+#define STATUS_ADDRESS_ACK	1
+#define STATUS_ADDRESS_NAK	2
+
+static int usb_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs, int num)
+{
+	unsigned char status;
+	struct i2c_msg *pmsg;
+	int i;
+
+	dev_dbg(&adapter->dev, "master xfer %d messages:\n", num);
+
+	for (i = 0 ; i < num ; i++) {
+		int cmd = CMD_I2C_IO;
+
+		if (i == 0)
+			cmd |= CMD_I2C_IO_BEGIN;
+
+		if (i == num-1)
+			cmd |= CMD_I2C_IO_END;
+
+		pmsg = &msgs[i];
+
+		dev_dbg(&adapter->dev,
+			"  %d: %s (flags %d) %d bytes to 0x%02x\n",
+			i, pmsg->flags & I2C_M_RD ? "read" : "write",
+			pmsg->flags, pmsg->len, pmsg->addr);
+
+		/* and directly send the message */
+		if (pmsg->flags & I2C_M_RD) {
+			/* read data */
+			if (usb_read(adapter, cmd,
+				     pmsg->flags, pmsg->addr,
+				     pmsg->buf, pmsg->len) != pmsg->len) {
+				dev_err(&adapter->dev,
+					"failure reading data\n");
+				return -EREMOTEIO;
+			}
+		} else {
+			/* write data */
+			if (usb_write(adapter, cmd,
+				      pmsg->flags, pmsg->addr,
+				      pmsg->buf, pmsg->len) != pmsg->len) {
+				dev_err(&adapter->dev,
+					"failure writing data\n");
+				return -EREMOTEIO;
+			}
+		}
+
+		/* read status */
+		if (usb_read(adapter, CMD_GET_STATUS, 0, 0, &status, 1) != 1) {
+			dev_err(&adapter->dev, "failure reading status\n");
+			return -EREMOTEIO;
+		}
+
+		dev_dbg(&adapter->dev, "  status = %d\n", status);
+		if (status == STATUS_ADDRESS_NAK)
+			return -EREMOTEIO;
+	}
+
+	return i;
+}
+
+static u32 usb_func(struct i2c_adapter *adapter)
+{
+	u32 func;
+
+	/* get functionality from adapter */
+	if (usb_read(adapter, CMD_GET_FUNC, 0, 0, &func, sizeof(func)) !=
+	    sizeof(func)) {
+		dev_err(&adapter->dev, "failure reading functionality\n");
+		return 0;
+	}
+
+	return func;
+}
+
+/* This is the actual algorithm we define */
+static const struct i2c_algorithm usb_algorithm = {
+	.master_xfer	= usb_xfer,
+	.functionality	= usb_func,
+};
+
+/* ----- end of i2c layer ------------------------------------------------ */
+
+/* ----- begin of usb layer ---------------------------------------------- */
+
+/* The usb i2c interface uses a vid/pid pair donated by */
+/* Future Technology Devices International Ltd. */
+static struct usb_device_id i2c_tiny_usb_table [] = {
+	{ USB_DEVICE(0x0403, 0xc631) },
+	{ }			/* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, i2c_tiny_usb_table);
+
+/* Structure to hold all of our device specific stuff */
+struct i2c_tiny_usb {
+	struct usb_device *usb_dev; /* the usb device for this device */
+	struct usb_interface *interface; /* the interface for this device */
+	struct i2c_adapter adapter; /* i2c related things */
+};
+
+static int usb_read(struct i2c_adapter *adapter, int cmd,
+		    int value, int index, void *data, int len)
+{
+	struct i2c_tiny_usb *dev = (struct i2c_tiny_usb *)adapter->algo_data;
+
+	/* do control transfer */
+	return usb_control_msg(dev->usb_dev, usb_rcvctrlpipe(dev->usb_dev, 0),
+			       cmd, USB_TYPE_VENDOR | USB_RECIP_INTERFACE |
+			       USB_DIR_IN, value, index, data, len, 2000);
+}
+
+static int usb_write(struct i2c_adapter *adapter, int cmd,
+		     int value, int index, void *data, int len)
+{
+	struct i2c_tiny_usb *dev = (struct i2c_tiny_usb *)adapter->algo_data;
+
+	/* do control transfer */
+	return usb_control_msg(dev->usb_dev, usb_sndctrlpipe(dev->usb_dev, 0),
+			       cmd, USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
+			       value, index, data, len, 2000);
+}
+
+static void i2c_tiny_usb_free(struct i2c_tiny_usb *dev)
+{
+	usb_put_dev(dev->usb_dev);
+	kfree(dev);
+}
+
+static int i2c_tiny_usb_probe(struct usb_interface *interface,
+			      const struct usb_device_id *id)
+{
+	struct i2c_tiny_usb *dev;
+	int retval = -ENOMEM;
+	u16 version;
+
+	dev_dbg(&interface->dev, "probing usb device\n");
+
+	/* allocate memory for our device state and initialize it */
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	if (dev == NULL) {
+		dev_err(&interface->dev, "Out of memory\n");
+		goto error;
+	}
+
+	dev->usb_dev = usb_get_dev(interface_to_usbdev(interface));
+	dev->interface = interface;
+
+	/* save our data pointer in this interface device */
+	usb_set_intfdata(interface, dev);
+
+	version = le16_to_cpu(dev->usb_dev->descriptor.bcdDevice);
+	dev_info(&interface->dev,
+		 "version %x.%02x found at bus %03d address %03d\n",
+		 version >> 8, version & 0xff,
+		 dev->usb_dev->bus->busnum, dev->usb_dev->devnum);
+
+	/* setup i2c adapter description */
+	dev->adapter.owner = THIS_MODULE;
+	dev->adapter.class = I2C_CLASS_HWMON;
+	dev->adapter.algo = &usb_algorithm;
+	dev->adapter.algo_data = dev;
+	snprintf(dev->adapter.name, I2C_NAME_SIZE,
+		 "i2c-tiny-usb at bus %03d device %03d",
+		 dev->usb_dev->bus->busnum, dev->usb_dev->devnum);
+
+	if (usb_write(&dev->adapter, CMD_SET_DELAY,
+		      cpu_to_le16(delay), 0, NULL, 0) != 0) {
+		dev_err(&dev->adapter.dev,
+			"failure setting delay to %dus\n", delay);
+		retval = -EIO;
+		goto error;
+	}
+
+	dev->adapter.dev.parent = &dev->interface->dev;
+
+	/* and finally attach to i2c layer */
+	i2c_add_adapter(&dev->adapter);
+
+	/* inform user about successful attachment to i2c layer */
+	dev_info(&dev->adapter.dev, "connected i2c-tiny-usb device\n");
+
+	return 0;
+
+ error:
+	if (dev)
+		i2c_tiny_usb_free(dev);
+
+	return retval;
+}
+
+static void i2c_tiny_usb_disconnect(struct usb_interface *interface)
+{
+	struct i2c_tiny_usb *dev = usb_get_intfdata(interface);
+
+	i2c_del_adapter(&dev->adapter);
+	usb_set_intfdata(interface, NULL);
+	i2c_tiny_usb_free(dev);
+
+	dev_dbg(&interface->dev, "disconnected\n");
+}
+
+static struct usb_driver i2c_tiny_usb_driver = {
+	.name		= "i2c-tiny-usb",
+	.probe		= i2c_tiny_usb_probe,
+	.disconnect	= i2c_tiny_usb_disconnect,
+	.id_table	= i2c_tiny_usb_table,
+};
+
+static int __init usb_i2c_tiny_usb_init(void)
+{
+	/* register this driver with the USB subsystem */
+	return usb_register(&i2c_tiny_usb_driver);
+}
+
+static void __exit usb_i2c_tiny_usb_exit(void)
+{
+	/* deregister this driver with the USB subsystem */
+	usb_deregister(&i2c_tiny_usb_driver);
+}
+
+module_init(usb_i2c_tiny_usb_init);
+module_exit(usb_i2c_tiny_usb_exit);
+
+/* ----- end of usb layer ------------------------------------------------ */
+
+MODULE_AUTHOR("Till Harbaum <Till@Harbaum.org>");
+MODULE_DESCRIPTION("i2c-tiny-usb driver v1.0");
+MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c
index 03c5fc86854..7a2bc06304f 100644
--- a/drivers/i2c/busses/i2c-viapro.c
+++ b/drivers/i2c/busses/i2c-viapro.c
@@ -404,7 +404,7 @@ found:
 	}
 
 	vt596_adapter.dev.parent = &pdev->dev;
-	snprintf(vt596_adapter.name, I2C_NAME_SIZE,
+	snprintf(vt596_adapter.name, sizeof(vt596_adapter.name),
 		 "SMBus Via Pro adapter at %04x", vt596_smba);
 
 	vt596_pdev = pci_dev_get(pdev);
diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c
index 0b082c5a019..0db56e7bc34 100644
--- a/drivers/i2c/busses/scx200_acb.c
+++ b/drivers/i2c/busses/scx200_acb.c
@@ -441,7 +441,7 @@ static __init struct scx200_acb_iface *scx200_create_iface(const char *text,
 
 	adapter = &iface->adapter;
 	i2c_set_adapdata(adapter, iface);
-	snprintf(adapter->name, I2C_NAME_SIZE, "%s ACB%d", text, index);
+	snprintf(adapter->name, sizeof(adapter->name), "%s ACB%d", text, index);
 	adapter->owner = THIS_MODULE;
 	adapter->id = I2C_HW_SMBUS_SCX200;
 	adapter->algo = &scx200_acb_algorithm;
@@ -599,6 +599,7 @@ static __init int scx200_scan_pci(void)
 		else {
 			int i;
 
+			pci_dev_put(pdev);
 			for (i = 0; i < MAX_DEVICES; ++i) {
 				if (base[i] == 0)
 					continue;
diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig
index 87ee3ce5861..ea085a006ea 100644
--- a/drivers/i2c/chips/Kconfig
+++ b/drivers/i2c/chips/Kconfig
@@ -3,11 +3,10 @@
 #
 
 menu "Miscellaneous I2C Chip support"
-	depends on I2C
 
 config SENSORS_DS1337
 	tristate "Dallas Semiconductor DS1337 and DS1339 Real Time Clock"
-	depends on I2C && EXPERIMENTAL
+	depends on EXPERIMENTAL
 	help
 	  If you say yes here you get support for Dallas Semiconductor
 	  DS1337 and DS1339 real-time clock chips.
@@ -17,7 +16,7 @@ config SENSORS_DS1337
 
 config SENSORS_DS1374
 	tristate "Maxim/Dallas Semiconductor DS1374 Real Time Clock"
-	depends on I2C && EXPERIMENTAL
+	depends on EXPERIMENTAL
 	help
 	  If you say yes here you get support for Dallas Semiconductor
 	  DS1374 real-time clock chips.
@@ -27,7 +26,7 @@ config SENSORS_DS1374
 
 config SENSORS_EEPROM
 	tristate "EEPROM reader"
-	depends on I2C && EXPERIMENTAL
+	depends on EXPERIMENTAL
 	help
 	  If you say yes here you get read-only access to the EEPROM data
 	  available on modern memory DIMMs and Sony Vaio laptops.  Such
@@ -38,7 +37,7 @@ config SENSORS_EEPROM
 
 config SENSORS_PCF8574
 	tristate "Philips PCF8574 and PCF8574A"
-	depends on I2C && EXPERIMENTAL
+	depends on EXPERIMENTAL
 	default n
 	help
 	  If you say yes here you get support for Philips PCF8574 and 
@@ -52,7 +51,7 @@ config SENSORS_PCF8574
 
 config SENSORS_PCA9539
 	tristate "Philips PCA9539 16-bit I/O port"
-	depends on I2C && EXPERIMENTAL
+	depends on EXPERIMENTAL
 	help
 	  If you say yes here you get support for the Philips PCA9539
 	  16-bit I/O port.
@@ -62,7 +61,7 @@ config SENSORS_PCA9539
 
 config SENSORS_PCF8591
 	tristate "Philips PCF8591"
-	depends on I2C && EXPERIMENTAL
+	depends on EXPERIMENTAL
 	default n
 	help
 	  If you say yes here you get support for Philips PCF8591 chips.
@@ -75,7 +74,7 @@ config SENSORS_PCF8591
 
 config ISP1301_OMAP
 	tristate "Philips ISP1301 with OMAP OTG"
-	depends on I2C && ARCH_OMAP_OTG
+	depends on ARCH_OMAP_OTG
 	help
 	  If you say yes here you get support for the Philips ISP1301
 	  USB-On-The-Go transceiver working with the OMAP OTG controller.
@@ -90,7 +89,7 @@ config ISP1301_OMAP
 # and having mostly OMAP-specific board support
 config TPS65010
 	tristate "TPS6501x Power Management chips"
-	depends on I2C && ARCH_OMAP
+	depends on ARCH_OMAP
 	default y if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_OSK
 	help
 	  If you say yes here you get support for the TPS6501x series of
@@ -103,7 +102,7 @@ config TPS65010
 
 config SENSORS_M41T00
 	tristate "ST M41T00 RTC chip"
-	depends on I2C && PPC32
+	depends on PPC32
 	help
 	  If you say yes here you get support for the ST M41T00 RTC chip.
 
@@ -112,7 +111,7 @@ config SENSORS_M41T00
 
 config SENSORS_MAX6875
 	tristate "Maxim MAX6875 Power supply supervisor"
-	depends on I2C && EXPERIMENTAL
+	depends on EXPERIMENTAL
 	help
 	  If you say yes here you get support for the Maxim MAX6875
 	  EEPROM-programmable, quad power-supply sequencer/supervisor.
diff --git a/drivers/i2c/i2c-boardinfo.c b/drivers/i2c/i2c-boardinfo.c
new file mode 100644
index 00000000000..ffb35f09df0
--- /dev/null
+++ b/drivers/i2c/i2c-boardinfo.c
@@ -0,0 +1,90 @@
+/*
+ * i2c-boardinfo.h - collect pre-declarations of I2C devices
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/i2c.h>
+
+#include "i2c-core.h"
+
+
+/* These symbols are exported ONLY FOR the i2c core.
+ * No other users will be supported.
+ */
+DEFINE_MUTEX(__i2c_board_lock);
+EXPORT_SYMBOL_GPL(__i2c_board_lock);
+
+LIST_HEAD(__i2c_board_list);
+EXPORT_SYMBOL_GPL(__i2c_board_list);
+
+int __i2c_first_dynamic_bus_num;
+EXPORT_SYMBOL_GPL(__i2c_first_dynamic_bus_num);
+
+
+/**
+ * i2c_register_board_info - statically declare I2C devices
+ * @busnum: identifies the bus to which these devices belong
+ * @info: vector of i2c device descriptors
+ * @len: how many descriptors in the vector; may be zero to reserve
+ *	the specified bus number.
+ *
+ * Systems using the Linux I2C driver stack can declare tables of board info
+ * while they initialize.  This should be done in board-specific init code
+ * near arch_initcall() time, or equivalent, before any I2C adapter driver is
+ * registered.  For example, mainboard init code could define several devices,
+ * as could the init code for each daughtercard in a board stack.
+ *
+ * The I2C devices will be created later, after the adapter for the relevant
+ * bus has been registered.  After that moment, standard driver model tools
+ * are used to bind "new style" I2C drivers to the devices.  The bus number
+ * for any device declared using this routine is not available for dynamic
+ * allocation.
+ *
+ * The board info passed can safely be __initdata, but be careful of embedded
+ * pointers (for platform_data, functions, etc) since that won't be copied.
+ */
+int __init
+i2c_register_board_info(int busnum,
+	struct i2c_board_info const *info, unsigned len)
+{
+	int status;
+
+	mutex_lock(&__i2c_board_lock);
+
+	/* dynamic bus numbers will be assigned after the last static one */
+	if (busnum >= __i2c_first_dynamic_bus_num)
+		__i2c_first_dynamic_bus_num = busnum + 1;
+
+	for (status = 0; len; len--, info++) {
+		struct i2c_devinfo	*devinfo;
+
+		devinfo = kzalloc(sizeof(*devinfo), GFP_KERNEL);
+		if (!devinfo) {
+			pr_debug("i2c-core: can't register boardinfo!\n");
+			status = -ENOMEM;
+			break;
+		}
+
+		devinfo->busnum = busnum;
+		devinfo->board_info = *info;
+		list_add_tail(&devinfo->list, &__i2c_board_list);
+	}
+
+	mutex_unlock(&__i2c_board_lock);
+
+	return status;
+}
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 21fe1406c8b..64f8e56d300 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -35,29 +35,92 @@
 #include <linux/completion.h>
 #include <asm/uaccess.h>
 
+#include "i2c-core.h"
+
 
 static LIST_HEAD(adapters);
 static LIST_HEAD(drivers);
 static DEFINE_MUTEX(core_lists);
 static DEFINE_IDR(i2c_adapter_idr);
 
+#define is_newstyle_driver(d) ((d)->probe || (d)->remove)
 
 /* ------------------------------------------------------------------------- */
 
-/* match always succeeds, as we want the probe() to tell if we really accept this match */
 static int i2c_device_match(struct device *dev, struct device_driver *drv)
 {
-	return 1;
+	struct i2c_client	*client = to_i2c_client(dev);
+	struct i2c_driver	*driver = to_i2c_driver(drv);
+
+	/* make legacy i2c drivers bypass driver model probing entirely;
+	 * such drivers scan each i2c adapter/bus themselves.
+	 */
+	if (!is_newstyle_driver(driver))
+		return 0;
+
+	/* new style drivers use the same kind of driver matching policy
+	 * as platform devices or SPI:  compare device and driver IDs.
+	 */
+	return strcmp(client->driver_name, drv->name) == 0;
+}
+
+#ifdef	CONFIG_HOTPLUG
+
+/* uevent helps with hotplug: modprobe -q $(MODALIAS) */
+static int i2c_device_uevent(struct device *dev, char **envp, int num_envp,
+		      char *buffer, int buffer_size)
+{
+	struct i2c_client	*client = to_i2c_client(dev);
+	int			i = 0, length = 0;
+
+	/* by definition, legacy drivers can't hotplug */
+	if (dev->driver || !client->driver_name)
+		return 0;
+
+	if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
+			"MODALIAS=%s", client->driver_name))
+		return -ENOMEM;
+	envp[i] = NULL;
+	dev_dbg(dev, "uevent\n");
+	return 0;
 }
 
+#else
+#define i2c_device_uevent	NULL
+#endif	/* CONFIG_HOTPLUG */
+
 static int i2c_device_probe(struct device *dev)
 {
-	return -ENODEV;
+	struct i2c_client	*client = to_i2c_client(dev);
+	struct i2c_driver	*driver = to_i2c_driver(dev->driver);
+
+	if (!driver->probe)
+		return -ENODEV;
+	client->driver = driver;
+	dev_dbg(dev, "probe\n");
+	return driver->probe(client);
 }
 
 static int i2c_device_remove(struct device *dev)
 {
-	return 0;
+	struct i2c_client	*client = to_i2c_client(dev);
+	struct i2c_driver	*driver;
+	int			status;
+
+	if (!dev->driver)
+		return 0;
+
+	driver = to_i2c_driver(dev->driver);
+	if (driver->remove) {
+		dev_dbg(dev, "remove\n");
+		status = driver->remove(client);
+	} else {
+		dev->driver = NULL;
+		status = 0;
+	}
+	if (status == 0)
+		client->driver = NULL;
+	return status;
 }
 
 static void i2c_device_shutdown(struct device *dev)
@@ -95,122 +158,184 @@ static int i2c_device_resume(struct device * dev)
 	return driver->resume(to_i2c_client(dev));
 }
 
+static void i2c_client_release(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	complete(&client->released);
+}
+
+static void i2c_client_dev_release(struct device *dev)
+{
+	kfree(to_i2c_client(dev));
+}
+
+static ssize_t show_client_name(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	return sprintf(buf, "%s\n", client->name);
+}
+
+static ssize_t show_modalias(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	return client->driver_name
+		? sprintf(buf, "%s\n", client->driver_name)
+		: 0;
+}
+
+static struct device_attribute i2c_dev_attrs[] = {
+	__ATTR(name, S_IRUGO, show_client_name, NULL),
+	/* modalias helps coldplug:  modprobe $(cat .../modalias) */
+	__ATTR(modalias, S_IRUGO, show_modalias, NULL),
+	{ },
+};
+
 struct bus_type i2c_bus_type = {
 	.name		= "i2c",
+	.dev_attrs	= i2c_dev_attrs,
 	.match		= i2c_device_match,
+	.uevent		= i2c_device_uevent,
 	.probe		= i2c_device_probe,
 	.remove		= i2c_device_remove,
 	.shutdown	= i2c_device_shutdown,
 	.suspend	= i2c_device_suspend,
 	.resume		= i2c_device_resume,
 };
+EXPORT_SYMBOL_GPL(i2c_bus_type);
 
-/* ------------------------------------------------------------------------- */
+/**
+ * i2c_new_device - instantiate an i2c device for use with a new style driver
+ * @adap: the adapter managing the device
+ * @info: describes one I2C device; bus_num is ignored
+ *
+ * Create a device to work with a new style i2c driver, where binding is
+ * handled through driver model probe()/remove() methods.  This call is not
+ * appropriate for use by mainboad initialization logic, which usually runs
+ * during an arch_initcall() long before any i2c_adapter could exist.
+ *
+ * This returns the new i2c client, which may be saved for later use with
+ * i2c_unregister_device(); or NULL to indicate an error.
+ */
+struct i2c_client *
+i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info)
+{
+	struct i2c_client	*client;
+	int			status;
 
-void i2c_adapter_dev_release(struct device *dev)
+	client = kzalloc(sizeof *client, GFP_KERNEL);
+	if (!client)
+		return NULL;
+
+	client->adapter = adap;
+
+	client->dev.platform_data = info->platform_data;
+	client->flags = info->flags;
+	client->addr = info->addr;
+	client->irq = info->irq;
+
+	strlcpy(client->driver_name, info->driver_name,
+		sizeof(client->driver_name));
+	strlcpy(client->name, info->type, sizeof(client->name));
+
+	/* a new style driver may be bound to this device when we
+	 * return from this function, or any later moment (e.g. maybe
+	 * hotplugging will load the driver module).  and the device
+	 * refcount model is the standard driver model one.
+	 */
+	status = i2c_attach_client(client);
+	if (status < 0) {
+		kfree(client);
+		client = NULL;
+	}
+	return client;
+}
+EXPORT_SYMBOL_GPL(i2c_new_device);
+
+
+/**
+ * i2c_unregister_device - reverse effect of i2c_new_device()
+ * @client: value returned from i2c_new_device()
+ */
+void i2c_unregister_device(struct i2c_client *client)
 {
-	struct i2c_adapter *adap = dev_to_i2c_adapter(dev);
-	complete(&adap->dev_released);
+	struct i2c_adapter	*adapter = client->adapter;
+	struct i2c_driver	*driver = client->driver;
+
+	if (driver && !is_newstyle_driver(driver)) {
+		dev_err(&client->dev, "can't unregister devices "
+			"with legacy drivers\n");
+		WARN_ON(1);
+		return;
+	}
+
+	mutex_lock(&adapter->clist_lock);
+	list_del(&client->list);
+	mutex_unlock(&adapter->clist_lock);
+
+	device_unregister(&client->dev);
 }
+EXPORT_SYMBOL_GPL(i2c_unregister_device);
 
-struct device_driver i2c_adapter_driver = {
-	.owner = THIS_MODULE,
-	.name =	"i2c_adapter",
-	.bus = &i2c_bus_type,
-};
 
 /* ------------------------------------------------------------------------- */
 
 /* I2C bus adapters -- one roots each I2C or SMBUS segment */
 
-static void i2c_adapter_class_dev_release(struct class_device *dev)
+void i2c_adapter_dev_release(struct device *dev)
 {
-	struct i2c_adapter *adap = class_dev_to_i2c_adapter(dev);
-	complete(&adap->class_dev_released);
+	struct i2c_adapter *adap = to_i2c_adapter(dev);
+	complete(&adap->dev_released);
 }
+EXPORT_SYMBOL_GPL(i2c_adapter_dev_release);	/* exported to i2c-isa */
 
-static ssize_t i2c_adapter_show_name(struct class_device *cdev, char *buf)
+static ssize_t
+show_adapter_name(struct device *dev, struct device_attribute *attr, char *buf)
 {
-	struct i2c_adapter *adap = class_dev_to_i2c_adapter(cdev);
+	struct i2c_adapter *adap = to_i2c_adapter(dev);
 	return sprintf(buf, "%s\n", adap->name);
 }
 
-static struct class_device_attribute i2c_adapter_attrs[] = {
-	__ATTR(name, S_IRUGO, i2c_adapter_show_name, NULL),
+static struct device_attribute i2c_adapter_attrs[] = {
+	__ATTR(name, S_IRUGO, show_adapter_name, NULL),
 	{ },
 };
 
 struct class i2c_adapter_class = {
 	.owner			= THIS_MODULE,
 	.name			= "i2c-adapter",
-	.class_dev_attrs	= i2c_adapter_attrs,
-	.release		= &i2c_adapter_class_dev_release,
+	.dev_attrs		= i2c_adapter_attrs,
 };
+EXPORT_SYMBOL_GPL(i2c_adapter_class);		/* exported to i2c-isa */
 
-static ssize_t show_adapter_name(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct i2c_adapter *adap = dev_to_i2c_adapter(dev);
-	return sprintf(buf, "%s\n", adap->name);
-}
-static DEVICE_ATTR(name, S_IRUGO, show_adapter_name, NULL);
-
-
-static void i2c_client_release(struct device *dev)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	complete(&client->released);
-}
-
-static ssize_t show_client_name(struct device *dev, struct device_attribute *attr, char *buf)
+static void i2c_scan_static_board_info(struct i2c_adapter *adapter)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	return sprintf(buf, "%s\n", client->name);
+	struct i2c_devinfo	*devinfo;
+
+	mutex_lock(&__i2c_board_lock);
+	list_for_each_entry(devinfo, &__i2c_board_list, list) {
+		if (devinfo->busnum == adapter->nr
+				&& !i2c_new_device(adapter,
+						&devinfo->board_info))
+			printk(KERN_ERR "i2c-core: can't create i2c%d-%04x\n",
+				i2c_adapter_id(adapter),
+				devinfo->board_info.addr);
+	}
+	mutex_unlock(&__i2c_board_lock);
 }
 
-/*
- * We can't use the DEVICE_ATTR() macro here, as we used the same name for
- * an i2c adapter attribute (above).
- */
-static struct device_attribute dev_attr_client_name =
-	__ATTR(name, S_IRUGO, &show_client_name, NULL);
-
-
-/* ---------------------------------------------------
- * registering functions
- * ---------------------------------------------------
- */
-
-/* -----
- * i2c_add_adapter is called from within the algorithm layer,
- * when a new hw adapter registers. A new device is register to be
- * available for clients.
- */
-int i2c_add_adapter(struct i2c_adapter *adap)
+static int i2c_register_adapter(struct i2c_adapter *adap)
 {
-	int id, res = 0;
+	int res = 0;
 	struct list_head   *item;
 	struct i2c_driver  *driver;
 
-	mutex_lock(&core_lists);
-
-	if (idr_pre_get(&i2c_adapter_idr, GFP_KERNEL) == 0) {
-		res = -ENOMEM;
-		goto out_unlock;
-	}
-
-	res = idr_get_new(&i2c_adapter_idr, adap, &id);
-	if (res < 0) {
-		if (res == -EAGAIN)
-			res = -ENOMEM;
-		goto out_unlock;
-	}
-
-	adap->nr =  id & MAX_ID_MASK;
 	mutex_init(&adap->bus_lock);
 	mutex_init(&adap->clist_lock);
-	list_add_tail(&adap->list,&adapters);
 	INIT_LIST_HEAD(&adap->clients);
 
+	mutex_lock(&core_lists);
+	list_add_tail(&adap->list, &adapters);
+
 	/* Add the adapter to the driver core.
 	 * If the parent pointer is not set up,
 	 * we add this adapter to the host bus.
@@ -221,27 +346,19 @@ int i2c_add_adapter(struct i2c_adapter *adap)
 			 "physical device\n", adap->name);
 	}
 	sprintf(adap->dev.bus_id, "i2c-%d", adap->nr);
-	adap->dev.driver = &i2c_adapter_driver;
 	adap->dev.release = &i2c_adapter_dev_release;
+	adap->dev.class = &i2c_adapter_class;
 	res = device_register(&adap->dev);
 	if (res)
 		goto out_list;
-	res = device_create_file(&adap->dev, &dev_attr_name);
-	if (res)
-		goto out_unregister;
-
-	/* Add this adapter to the i2c_adapter class */
-	memset(&adap->class_dev, 0x00, sizeof(struct class_device));
-	adap->class_dev.dev = &adap->dev;
-	adap->class_dev.class = &i2c_adapter_class;
-	strlcpy(adap->class_dev.class_id, adap->dev.bus_id, BUS_ID_SIZE);
-	res = class_device_register(&adap->class_dev);
-	if (res)
-		goto out_remove_name;
 
 	dev_dbg(&adap->dev, "adapter [%s] registered\n", adap->name);
 
-	/* inform drivers of new adapters */
+	/* create pre-declared device nodes for new-style drivers */
+	if (adap->nr < __i2c_first_dynamic_bus_num)
+		i2c_scan_static_board_info(adap);
+
+	/* let legacy drivers scan this bus for matching devices */
 	list_for_each(item,&drivers) {
 		driver = list_entry(item, struct i2c_driver, list);
 		if (driver->attach_adapter)
@@ -253,18 +370,98 @@ out_unlock:
 	mutex_unlock(&core_lists);
 	return res;
 
-out_remove_name:
-	device_remove_file(&adap->dev, &dev_attr_name);
-out_unregister:
-	init_completion(&adap->dev_released); /* Needed? */
-	device_unregister(&adap->dev);
-	wait_for_completion(&adap->dev_released);
 out_list:
 	list_del(&adap->list);
 	idr_remove(&i2c_adapter_idr, adap->nr);
 	goto out_unlock;
 }
 
+/**
+ * i2c_add_adapter - declare i2c adapter, use dynamic bus number
+ * @adapter: the adapter to add
+ *
+ * This routine is used to declare an I2C adapter when its bus number
+ * doesn't matter.  Examples: for I2C adapters dynamically added by
+ * USB links or PCI plugin cards.
+ *
+ * When this returns zero, a new bus number was allocated and stored
+ * in adap->nr, and the specified adapter became available for clients.
+ * Otherwise, a negative errno value is returned.
+ */
+int i2c_add_adapter(struct i2c_adapter *adapter)
+{
+	int	id, res = 0;
+
+retry:
+	if (idr_pre_get(&i2c_adapter_idr, GFP_KERNEL) == 0)
+		return -ENOMEM;
+
+	mutex_lock(&core_lists);
+	/* "above" here means "above or equal to", sigh */
+	res = idr_get_new_above(&i2c_adapter_idr, adapter,
+				__i2c_first_dynamic_bus_num, &id);
+	mutex_unlock(&core_lists);
+
+	if (res < 0) {
+		if (res == -EAGAIN)
+			goto retry;
+		return res;
+	}
+
+	adapter->nr = id;
+	return i2c_register_adapter(adapter);
+}
+EXPORT_SYMBOL(i2c_add_adapter);
+
+/**
+ * i2c_add_numbered_adapter - declare i2c adapter, use static bus number
+ * @adap: the adapter to register (with adap->nr initialized)
+ *
+ * This routine is used to declare an I2C adapter when its bus number
+ * matters.  Example: for I2C adapters from system-on-chip CPUs, or
+ * otherwise built in to the system's mainboard, and where i2c_board_info
+ * is used to properly configure I2C devices.
+ *
+ * If no devices have pre-been declared for this bus, then be sure to
+ * register the adapter before any dynamically allocated ones.  Otherwise
+ * the required bus ID may not be available.
+ *
+ * When this returns zero, the specified adapter became available for
+ * clients using the bus number provided in adap->nr.  Also, the table
+ * of I2C devices pre-declared using i2c_register_board_info() is scanned,
+ * and the appropriate driver model device nodes are created.  Otherwise, a
+ * negative errno value is returned.
+ */
+int i2c_add_numbered_adapter(struct i2c_adapter *adap)
+{
+	int	id;
+	int	status;
+
+	if (adap->nr & ~MAX_ID_MASK)
+		return -EINVAL;
+
+retry:
+	if (idr_pre_get(&i2c_adapter_idr, GFP_KERNEL) == 0)
+		return -ENOMEM;
+
+	mutex_lock(&core_lists);
+	/* "above" here means "above or equal to", sigh;
+	 * we need the "equal to" result to force the result
+	 */
+	status = idr_get_new_above(&i2c_adapter_idr, adap, adap->nr, &id);
+	if (status == 0 && id != adap->nr) {
+		status = -EBUSY;
+		idr_remove(&i2c_adapter_idr, id);
+	}
+	mutex_unlock(&core_lists);
+	if (status == -EAGAIN)
+		goto retry;
+
+	if (status == 0)
+		status = i2c_register_adapter(adap);
+	return status;
+}
+EXPORT_SYMBOL_GPL(i2c_add_numbered_adapter);
 
 int i2c_del_adapter(struct i2c_adapter *adap)
 {
@@ -302,9 +499,19 @@ int i2c_del_adapter(struct i2c_adapter *adap)
 	/* detach any active clients. This must be done first, because
 	 * it can fail; in which case we give up. */
 	list_for_each_safe(item, _n, &adap->clients) {
+		struct i2c_driver	*driver;
+
 		client = list_entry(item, struct i2c_client, list);
+		driver = client->driver;
+
+		/* new style, follow standard driver model */
+		if (!driver || is_newstyle_driver(driver)) {
+			i2c_unregister_device(client);
+			continue;
+		}
 
-		if ((res=client->driver->detach_client(client))) {
+		/* legacy drivers create and remove clients themselves */
+		if ((res = driver->detach_client(client))) {
 			dev_err(&adap->dev, "detach_client failed for client "
 				"[%s] at address 0x%02x\n", client->name,
 				client->addr);
@@ -314,17 +521,13 @@ int i2c_del_adapter(struct i2c_adapter *adap)
 
 	/* clean up the sysfs representation */
 	init_completion(&adap->dev_released);
-	init_completion(&adap->class_dev_released);
-	class_device_unregister(&adap->class_dev);
-	device_remove_file(&adap->dev, &dev_attr_name);
 	device_unregister(&adap->dev);
 	list_del(&adap->list);
 
 	/* wait for sysfs to drop all references */
 	wait_for_completion(&adap->dev_released);
-	wait_for_completion(&adap->class_dev_released);
 
-	/* free dynamically allocated bus id */
+	/* free bus id */
 	idr_remove(&i2c_adapter_idr, adap->nr);
 
 	dev_dbg(&adap->dev, "adapter [%s] unregistered\n", adap->name);
@@ -333,24 +536,42 @@ int i2c_del_adapter(struct i2c_adapter *adap)
 	mutex_unlock(&core_lists);
 	return res;
 }
+EXPORT_SYMBOL(i2c_del_adapter);
+
 
+/* ------------------------------------------------------------------------- */
 
-/* -----
- * What follows is the "upwards" interface: commands for talking to clients,
- * which implement the functions to access the physical information of the
- * chips.
+/*
+ * An i2c_driver is used with one or more i2c_client (device) nodes to access
+ * i2c slave chips, on a bus instance associated with some i2c_adapter.  There
+ * are two models for binding the driver to its device:  "new style" drivers
+ * follow the standard Linux driver model and just respond to probe() calls
+ * issued if the driver core sees they match(); "legacy" drivers create device
+ * nodes themselves.
  */
 
 int i2c_register_driver(struct module *owner, struct i2c_driver *driver)
 {
-	struct list_head   *item;
-	struct i2c_adapter *adapter;
 	int res;
 
+	/* new style driver methods can't mix with legacy ones */
+	if (is_newstyle_driver(driver)) {
+		if (driver->attach_adapter || driver->detach_adapter
+				|| driver->detach_client) {
+			printk(KERN_WARNING
+					"i2c-core: driver [%s] is confused\n",
+					driver->driver.name);
+			return -EINVAL;
+		}
+	}
+
 	/* add the driver to the list of i2c drivers in the driver core */
 	driver->driver.owner = owner;
 	driver->driver.bus = &i2c_bus_type;
 
+	/* for new style drivers, when registration returns the driver core
+	 * will have called probe() for all matching-but-unbound devices.
+	 */
 	res = driver_register(&driver->driver);
 	if (res)
 		return res;
@@ -360,10 +581,11 @@ int i2c_register_driver(struct module *owner, struct i2c_driver *driver)
 	list_add_tail(&driver->list,&drivers);
 	pr_debug("i2c-core: driver [%s] registered\n", driver->driver.name);
 
-	/* now look for instances of driver on our adapters */
+	/* legacy drivers scan i2c busses directly */
 	if (driver->attach_adapter) {
-		list_for_each(item,&adapters) {
-			adapter = list_entry(item, struct i2c_adapter, list);
+		struct i2c_adapter *adapter;
+
+		list_for_each_entry(adapter, &adapters, list) {
 			driver->attach_adapter(adapter);
 		}
 	}
@@ -373,16 +595,22 @@ int i2c_register_driver(struct module *owner, struct i2c_driver *driver)
 }
 EXPORT_SYMBOL(i2c_register_driver);
 
-int i2c_del_driver(struct i2c_driver *driver)
+/**
+ * i2c_del_driver - unregister I2C driver
+ * @driver: the driver being unregistered
+ */
+void i2c_del_driver(struct i2c_driver *driver)
 {
 	struct list_head   *item1, *item2, *_n;
 	struct i2c_client  *client;
 	struct i2c_adapter *adap;
 
-	int res = 0;
-
 	mutex_lock(&core_lists);
 
+	/* new-style driver? */
+	if (is_newstyle_driver(driver))
+		goto unregister;
+
 	/* Have a look at each adapter, if clients of this driver are still
 	 * attached. If so, detach them to be able to kill the driver
 	 * afterwards.
@@ -390,11 +618,10 @@ int i2c_del_driver(struct i2c_driver *driver)
 	list_for_each(item1,&adapters) {
 		adap = list_entry(item1, struct i2c_adapter, list);
 		if (driver->detach_adapter) {
-			if ((res = driver->detach_adapter(adap))) {
+			if (driver->detach_adapter(adap)) {
 				dev_err(&adap->dev, "detach_adapter failed "
 					"for driver [%s]\n",
 					driver->driver.name);
-				goto out_unlock;
 			}
 		} else {
 			list_for_each_safe(item2, _n, &adap->clients) {
@@ -404,25 +631,26 @@ int i2c_del_driver(struct i2c_driver *driver)
 				dev_dbg(&adap->dev, "detaching client [%s] "
 					"at 0x%02x\n", client->name,
 					client->addr);
-				if ((res = driver->detach_client(client))) {
+				if (driver->detach_client(client)) {
 					dev_err(&adap->dev, "detach_client "
 						"failed for client [%s] at "
 						"0x%02x\n", client->name,
 						client->addr);
-					goto out_unlock;
 				}
 			}
 		}
 	}
 
+ unregister:
 	driver_unregister(&driver->driver);
 	list_del(&driver->list);
 	pr_debug("i2c-core: driver [%s] unregistered\n", driver->driver.name);
 
- out_unlock:
 	mutex_unlock(&core_lists);
-	return 0;
 }
+EXPORT_SYMBOL(i2c_del_driver);
+
+/* ------------------------------------------------------------------------- */
 
 static int __i2c_check_addr(struct i2c_adapter *adapter, unsigned int addr)
 {
@@ -447,6 +675,7 @@ int i2c_check_addr(struct i2c_adapter *adapter, int addr)
 
 	return rval;
 }
+EXPORT_SYMBOL(i2c_check_addr);
 
 int i2c_attach_client(struct i2c_client *client)
 {
@@ -463,9 +692,15 @@ int i2c_attach_client(struct i2c_client *client)
 	client->usage_count = 0;
 
 	client->dev.parent = &client->adapter->dev;
-	client->dev.driver = &client->driver->driver;
 	client->dev.bus = &i2c_bus_type;
-	client->dev.release = &i2c_client_release;
+
+	if (client->driver)
+		client->dev.driver = &client->driver->driver;
+
+	if (client->driver && !is_newstyle_driver(client->driver))
+		client->dev.release = i2c_client_release;
+	else
+		client->dev.release = i2c_client_dev_release;
 
 	snprintf(&client->dev.bus_id[0], sizeof(client->dev.bus_id),
 		"%d-%04x", i2c_adapter_id(adapter), client->addr);
@@ -474,9 +709,6 @@ int i2c_attach_client(struct i2c_client *client)
 	res = device_register(&client->dev);
 	if (res)
 		goto out_list;
-	res = device_create_file(&client->dev, &dev_attr_client_name);
-	if (res)
-		goto out_unregister;
 	mutex_unlock(&adapter->clist_lock);
 
 	if (adapter->client_register)  {
@@ -489,10 +721,6 @@ int i2c_attach_client(struct i2c_client *client)
 
 	return 0;
 
-out_unregister:
-	init_completion(&client->released); /* Needed? */
-	device_unregister(&client->dev);
-	wait_for_completion(&client->released);
 out_list:
 	list_del(&client->list);
 	dev_err(&adapter->dev, "Failed to attach i2c client %s at 0x%02x "
@@ -501,7 +729,7 @@ out_unlock:
 	mutex_unlock(&adapter->clist_lock);
 	return res;
 }
-
+EXPORT_SYMBOL(i2c_attach_client);
 
 int i2c_detach_client(struct i2c_client *client)
 {
@@ -527,7 +755,6 @@ int i2c_detach_client(struct i2c_client *client)
 	mutex_lock(&adapter->clist_lock);
 	list_del(&client->list);
 	init_completion(&client->released);
-	device_remove_file(&client->dev, &dev_attr_client_name);
 	device_unregister(&client->dev);
 	mutex_unlock(&adapter->clist_lock);
 	wait_for_completion(&client->released);
@@ -535,6 +762,7 @@ int i2c_detach_client(struct i2c_client *client)
  out:
 	return res;
 }
+EXPORT_SYMBOL(i2c_detach_client);
 
 static int i2c_inc_use_client(struct i2c_client *client)
 {
@@ -567,6 +795,7 @@ int i2c_use_client(struct i2c_client *client)
 
 	return 0;
 }
+EXPORT_SYMBOL(i2c_use_client);
 
 int i2c_release_client(struct i2c_client *client)
 {
@@ -581,6 +810,7 @@ int i2c_release_client(struct i2c_client *client)
 
 	return 0;
 }
+EXPORT_SYMBOL(i2c_release_client);
 
 void i2c_clients_command(struct i2c_adapter *adap, unsigned int cmd, void *arg)
 {
@@ -601,6 +831,7 @@ void i2c_clients_command(struct i2c_adapter *adap, unsigned int cmd, void *arg)
        }
        mutex_unlock(&adap->clist_lock);
 }
+EXPORT_SYMBOL(i2c_clients_command);
 
 static int __init i2c_init(void)
 {
@@ -609,16 +840,12 @@ static int __init i2c_init(void)
 	retval = bus_register(&i2c_bus_type);
 	if (retval)
 		return retval;
-	retval = driver_register(&i2c_adapter_driver);
-	if (retval)
-		return retval;
 	return class_register(&i2c_adapter_class);
 }
 
 static void __exit i2c_exit(void)
 {
 	class_unregister(&i2c_adapter_class);
-	driver_unregister(&i2c_adapter_driver);
 	bus_unregister(&i2c_bus_type);
 }
 
@@ -638,8 +865,9 @@ int i2c_transfer(struct i2c_adapter * adap, struct i2c_msg *msgs, int num)
 #ifdef DEBUG
 		for (ret = 0; ret < num; ret++) {
 			dev_dbg(&adap->dev, "master_xfer[%d] %c, addr=0x%02x, "
-				"len=%d\n", ret, msgs[ret].flags & I2C_M_RD ?
-				'R' : 'W', msgs[ret].addr, msgs[ret].len);
+				"len=%d%s\n", ret, (msgs[ret].flags & I2C_M_RD)
+				? 'R' : 'W', msgs[ret].addr, msgs[ret].len,
+				(msgs[ret].flags & I2C_M_RECV_LEN) ? "+" : "");
 		}
 #endif
 
@@ -653,6 +881,7 @@ int i2c_transfer(struct i2c_adapter * adap, struct i2c_msg *msgs, int num)
 		return -ENOSYS;
 	}
 }
+EXPORT_SYMBOL(i2c_transfer);
 
 int i2c_master_send(struct i2c_client *client,const char *buf ,int count)
 {
@@ -671,6 +900,7 @@ int i2c_master_send(struct i2c_client *client,const char *buf ,int count)
 	   transmitted, else error code. */
 	return (ret == 1) ? count : ret;
 }
+EXPORT_SYMBOL(i2c_master_send);
 
 int i2c_master_recv(struct i2c_client *client, char *buf ,int count)
 {
@@ -690,7 +920,7 @@ int i2c_master_recv(struct i2c_client *client, char *buf ,int count)
 	   transmitted, else error code. */
 	return (ret == 1) ? count : ret;
 }
-
+EXPORT_SYMBOL(i2c_master_recv);
 
 int i2c_control(struct i2c_client *client,
 	unsigned int cmd, unsigned long arg)
@@ -712,6 +942,7 @@ int i2c_control(struct i2c_client *client,
 	}
 	return ret;
 }
+EXPORT_SYMBOL(i2c_control);
 
 /* ----------------------------------------------------
  * the i2c address scanning function
@@ -853,6 +1084,70 @@ int i2c_probe(struct i2c_adapter *adapter,
 
 	return 0;
 }
+EXPORT_SYMBOL(i2c_probe);
+
+struct i2c_client *
+i2c_new_probed_device(struct i2c_adapter *adap,
+		      struct i2c_board_info *info,
+		      unsigned short const *addr_list)
+{
+	int i;
+
+	/* Stop here if the bus doesn't support probing */
+	if (!i2c_check_functionality(adap, I2C_FUNC_SMBUS_READ_BYTE)) {
+		dev_err(&adap->dev, "Probing not supported\n");
+		return NULL;
+	}
+
+	mutex_lock(&adap->clist_lock);
+	for (i = 0; addr_list[i] != I2C_CLIENT_END; i++) {
+		/* Check address validity */
+		if (addr_list[i] < 0x03 || addr_list[i] > 0x77) {
+			dev_warn(&adap->dev, "Invalid 7-bit address "
+				 "0x%02x\n", addr_list[i]);
+			continue;
+		}
+
+		/* Check address availability */
+		if (__i2c_check_addr(adap, addr_list[i])) {
+			dev_dbg(&adap->dev, "Address 0x%02x already in "
+				"use, not probing\n", addr_list[i]);
+			continue;
+		}
+
+		/* Test address responsiveness
+		   The default probe method is a quick write, but it is known
+		   to corrupt the 24RF08 EEPROMs due to a state machine bug,
+		   and could also irreversibly write-protect some EEPROMs, so
+		   for address ranges 0x30-0x37 and 0x50-0x5f, we use a byte
+		   read instead. Also, some bus drivers don't implement
+		   quick write, so we fallback to a byte read it that case
+		   too. */
+		if ((addr_list[i] & ~0x07) == 0x30
+		 || (addr_list[i] & ~0x0f) == 0x50
+		 || !i2c_check_functionality(adap, I2C_FUNC_SMBUS_QUICK)) {
+			if (i2c_smbus_xfer(adap, addr_list[i], 0,
+					   I2C_SMBUS_READ, 0,
+					   I2C_SMBUS_BYTE, NULL) >= 0)
+				break;
+		} else {
+			if (i2c_smbus_xfer(adap, addr_list[i], 0,
+					   I2C_SMBUS_WRITE, 0,
+					   I2C_SMBUS_QUICK, NULL) >= 0)
+				break;
+		}
+	}
+	mutex_unlock(&adap->clist_lock);
+
+	if (addr_list[i] == I2C_CLIENT_END) {
+		dev_dbg(&adap->dev, "Probing failed, no device found\n");
+		return NULL;
+	}
+
+	info->addr = addr_list[i];
+	return i2c_new_device(adap, info);
+}
+EXPORT_SYMBOL_GPL(i2c_new_probed_device);
 
 struct i2c_adapter* i2c_get_adapter(int id)
 {
@@ -866,11 +1161,13 @@ struct i2c_adapter* i2c_get_adapter(int id)
 	mutex_unlock(&core_lists);
 	return adapter;
 }
+EXPORT_SYMBOL(i2c_get_adapter);
 
 void i2c_put_adapter(struct i2c_adapter *adap)
 {
 	module_put(adap->owner);
 }
+EXPORT_SYMBOL(i2c_put_adapter);
 
 /* The SMBus parts */
 
@@ -939,6 +1236,7 @@ s32 i2c_smbus_write_quick(struct i2c_client *client, u8 value)
 	return i2c_smbus_xfer(client->adapter,client->addr,client->flags,
 	                      value,0,I2C_SMBUS_QUICK,NULL);
 }
+EXPORT_SYMBOL(i2c_smbus_write_quick);
 
 s32 i2c_smbus_read_byte(struct i2c_client *client)
 {
@@ -949,12 +1247,14 @@ s32 i2c_smbus_read_byte(struct i2c_client *client)
 	else
 		return data.byte;
 }
+EXPORT_SYMBOL(i2c_smbus_read_byte);
 
 s32 i2c_smbus_write_byte(struct i2c_client *client, u8 value)
 {
 	return i2c_smbus_xfer(client->adapter,client->addr,client->flags,
 	                      I2C_SMBUS_WRITE, value, I2C_SMBUS_BYTE, NULL);
 }
+EXPORT_SYMBOL(i2c_smbus_write_byte);
 
 s32 i2c_smbus_read_byte_data(struct i2c_client *client, u8 command)
 {
@@ -965,6 +1265,7 @@ s32 i2c_smbus_read_byte_data(struct i2c_client *client, u8 command)
 	else
 		return data.byte;
 }
+EXPORT_SYMBOL(i2c_smbus_read_byte_data);
 
 s32 i2c_smbus_write_byte_data(struct i2c_client *client, u8 command, u8 value)
 {
@@ -974,6 +1275,7 @@ s32 i2c_smbus_write_byte_data(struct i2c_client *client, u8 command, u8 value)
 	                      I2C_SMBUS_WRITE,command,
 	                      I2C_SMBUS_BYTE_DATA,&data);
 }
+EXPORT_SYMBOL(i2c_smbus_write_byte_data);
 
 s32 i2c_smbus_read_word_data(struct i2c_client *client, u8 command)
 {
@@ -984,6 +1286,7 @@ s32 i2c_smbus_read_word_data(struct i2c_client *client, u8 command)
 	else
 		return data.word;
 }
+EXPORT_SYMBOL(i2c_smbus_read_word_data);
 
 s32 i2c_smbus_write_word_data(struct i2c_client *client, u8 command, u16 value)
 {
@@ -993,6 +1296,23 @@ s32 i2c_smbus_write_word_data(struct i2c_client *client, u8 command, u16 value)
 	                      I2C_SMBUS_WRITE,command,
 	                      I2C_SMBUS_WORD_DATA,&data);
 }
+EXPORT_SYMBOL(i2c_smbus_write_word_data);
+
+/* Returns the number of read bytes */
+s32 i2c_smbus_read_block_data(struct i2c_client *client, u8 command,
+			      u8 *values)
+{
+	union i2c_smbus_data data;
+
+	if (i2c_smbus_xfer(client->adapter, client->addr, client->flags,
+	                   I2C_SMBUS_READ, command,
+	                   I2C_SMBUS_BLOCK_DATA, &data))
+		return -1;
+
+	memcpy(values, &data.block[1], data.block[0]);
+	return data.block[0];
+}
+EXPORT_SYMBOL(i2c_smbus_read_block_data);
 
 s32 i2c_smbus_write_block_data(struct i2c_client *client, u8 command,
 			       u8 length, const u8 *values)
@@ -1007,6 +1327,7 @@ s32 i2c_smbus_write_block_data(struct i2c_client *client, u8 command,
 			      I2C_SMBUS_WRITE,command,
 			      I2C_SMBUS_BLOCK_DATA,&data);
 }
+EXPORT_SYMBOL(i2c_smbus_write_block_data);
 
 /* Returns the number of read bytes */
 s32 i2c_smbus_read_i2c_block_data(struct i2c_client *client, u8 command, u8 *values)
@@ -1021,6 +1342,7 @@ s32 i2c_smbus_read_i2c_block_data(struct i2c_client *client, u8 command, u8 *val
 	memcpy(values, &data.block[1], data.block[0]);
 	return data.block[0];
 }
+EXPORT_SYMBOL(i2c_smbus_read_i2c_block_data);
 
 s32 i2c_smbus_write_i2c_block_data(struct i2c_client *client, u8 command,
 				   u8 length, const u8 *values)
@@ -1035,6 +1357,7 @@ s32 i2c_smbus_write_i2c_block_data(struct i2c_client *client, u8 command,
 			      I2C_SMBUS_WRITE, command,
 			      I2C_SMBUS_I2C_BLOCK_DATA, &data);
 }
+EXPORT_SYMBOL(i2c_smbus_write_i2c_block_data);
 
 /* Simulate a SMBus command using the i2c protocol
    No checking of parameters is done!  */
@@ -1098,9 +1421,9 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
 		break;
 	case I2C_SMBUS_BLOCK_DATA:
 		if (read_write == I2C_SMBUS_READ) {
-			dev_err(&adapter->dev, "Block read not supported "
-			       "under I2C emulation!\n");
-			return -1;
+			msg[1].flags |= I2C_M_RECV_LEN;
+			msg[1].len = 1; /* block length will be added by
+					   the underlying bus driver */
 		} else {
 			msg[0].len = data->block[0] + 2;
 			if (msg[0].len > I2C_SMBUS_BLOCK_MAX + 2) {
@@ -1114,9 +1437,21 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
 		}
 		break;
 	case I2C_SMBUS_BLOCK_PROC_CALL:
-		dev_dbg(&adapter->dev, "Block process call not supported "
-		       "under I2C emulation!\n");
-		return -1;
+		num = 2; /* Another special case */
+		read_write = I2C_SMBUS_READ;
+		if (data->block[0] > I2C_SMBUS_BLOCK_MAX) {
+			dev_err(&adapter->dev, "%s called with invalid "
+				"block proc call size (%d)\n", __FUNCTION__,
+				data->block[0]);
+			return -1;
+		}
+		msg[0].len = data->block[0] + 2;
+		for (i = 1; i < msg[0].len; i++)
+			msgbuf0[i] = data->block[i-1];
+		msg[1].flags |= I2C_M_RECV_LEN;
+		msg[1].len = 1; /* block length will be added by
+				   the underlying bus driver */
+		break;
 	case I2C_SMBUS_I2C_BLOCK_DATA:
 		if (read_write == I2C_SMBUS_READ) {
 			msg[1].len = I2C_SMBUS_BLOCK_MAX;
@@ -1180,6 +1515,11 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
 				for (i = 0; i < I2C_SMBUS_BLOCK_MAX; i++)
 					data->block[i+1] = msgbuf1[i];
 				break;
+			case I2C_SMBUS_BLOCK_DATA:
+			case I2C_SMBUS_BLOCK_PROC_CALL:
+				for (i = 0; i < msgbuf1[0] + 1; i++)
+					data->block[i] = msgbuf1[i];
+				break;
 		}
 	return 0;
 }
@@ -1204,43 +1544,7 @@ s32 i2c_smbus_xfer(struct i2c_adapter * adapter, u16 addr, unsigned short flags,
 
 	return res;
 }
-
-
-/* Next four are needed by i2c-isa */
-EXPORT_SYMBOL_GPL(i2c_adapter_dev_release);
-EXPORT_SYMBOL_GPL(i2c_adapter_driver);
-EXPORT_SYMBOL_GPL(i2c_adapter_class);
-EXPORT_SYMBOL_GPL(i2c_bus_type);
-
-EXPORT_SYMBOL(i2c_add_adapter);
-EXPORT_SYMBOL(i2c_del_adapter);
-EXPORT_SYMBOL(i2c_del_driver);
-EXPORT_SYMBOL(i2c_attach_client);
-EXPORT_SYMBOL(i2c_detach_client);
-EXPORT_SYMBOL(i2c_use_client);
-EXPORT_SYMBOL(i2c_release_client);
-EXPORT_SYMBOL(i2c_clients_command);
-EXPORT_SYMBOL(i2c_check_addr);
-
-EXPORT_SYMBOL(i2c_master_send);
-EXPORT_SYMBOL(i2c_master_recv);
-EXPORT_SYMBOL(i2c_control);
-EXPORT_SYMBOL(i2c_transfer);
-EXPORT_SYMBOL(i2c_get_adapter);
-EXPORT_SYMBOL(i2c_put_adapter);
-EXPORT_SYMBOL(i2c_probe);
-
 EXPORT_SYMBOL(i2c_smbus_xfer);
-EXPORT_SYMBOL(i2c_smbus_write_quick);
-EXPORT_SYMBOL(i2c_smbus_read_byte);
-EXPORT_SYMBOL(i2c_smbus_write_byte);
-EXPORT_SYMBOL(i2c_smbus_read_byte_data);
-EXPORT_SYMBOL(i2c_smbus_write_byte_data);
-EXPORT_SYMBOL(i2c_smbus_read_word_data);
-EXPORT_SYMBOL(i2c_smbus_write_word_data);
-EXPORT_SYMBOL(i2c_smbus_write_block_data);
-EXPORT_SYMBOL(i2c_smbus_read_i2c_block_data);
-EXPORT_SYMBOL(i2c_smbus_write_i2c_block_data);
 
 MODULE_AUTHOR("Simon G. Vogl <simon@tk.uni-linz.ac.at>");
 MODULE_DESCRIPTION("I2C-Bus main module");
diff --git a/drivers/i2c/i2c-core.h b/drivers/i2c/i2c-core.h
new file mode 100644
index 00000000000..cd5bff87485
--- /dev/null
+++ b/drivers/i2c/i2c-core.h
@@ -0,0 +1,31 @@
+/*
+ * i2c-core.h - interfaces internal to the I2C framework
+ *
+ * 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.
+ */
+
+struct i2c_devinfo {
+	struct list_head	list;
+	int			busnum;
+	struct i2c_board_info	board_info;
+};
+
+/* board_lock protects board_list and first_dynamic_bus_num.
+ * only i2c core components are allowed to use these symbols.
+ */
+extern struct mutex	__i2c_board_lock;
+extern struct list_head	__i2c_board_list;
+extern int		__i2c_first_dynamic_bus_num;
+
diff --git a/drivers/macintosh/therm_windtunnel.c b/drivers/macintosh/therm_windtunnel.c
index 35233de460a..3d0354e96a9 100644
--- a/drivers/macintosh/therm_windtunnel.c
+++ b/drivers/macintosh/therm_windtunnel.c
@@ -459,7 +459,8 @@ therm_of_probe( struct of_device *dev, const struct of_device_id *match )
 static int
 therm_of_remove( struct of_device *dev )
 {
-	return i2c_del_driver( &g4fan_driver );
+	i2c_del_driver( &g4fan_driver );
+	return 0;
 }
 
 static struct of_device_id therm_of_match[] = {{
diff --git a/drivers/media/dvb/b2c2/flexcop-i2c.c b/drivers/media/dvb/b2c2/flexcop-i2c.c
index 5347a406fff..02a0ea6e1c1 100644
--- a/drivers/media/dvb/b2c2/flexcop-i2c.c
+++ b/drivers/media/dvb/b2c2/flexcop-i2c.c
@@ -183,7 +183,8 @@ int flexcop_i2c_init(struct flexcop_device *fc)
 	mutex_init(&fc->i2c_mutex);
 
 	memset(&fc->i2c_adap, 0, sizeof(struct i2c_adapter));
-	strncpy(fc->i2c_adap.name, "B2C2 FlexCop device",I2C_NAME_SIZE);
+	strncpy(fc->i2c_adap.name, "B2C2 FlexCop device",
+		sizeof(fc->i2c_adap.name));
 
 	i2c_set_adapdata(&fc->i2c_adap,fc);
 
diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-i2c.c b/drivers/media/dvb/dvb-usb/dvb-usb-i2c.c
index 70df31b0a8a..088b6dee3a7 100644
--- a/drivers/media/dvb/dvb-usb/dvb-usb-i2c.c
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-i2c.c
@@ -19,7 +19,7 @@ int dvb_usb_i2c_init(struct dvb_usb_device *d)
 		return -EINVAL;
 	}
 
-	strncpy(d->i2c_adap.name,d->desc->name,I2C_NAME_SIZE);
+	strncpy(d->i2c_adap.name, d->desc->name, sizeof(d->i2c_adap.name));
 #ifdef I2C_ADAP_CLASS_TV_DIGITAL
 	d->i2c_adap.class = I2C_ADAP_CLASS_TV_DIGITAL,
 #else
diff --git a/drivers/media/dvb/frontends/dibx000_common.c b/drivers/media/dvb/frontends/dibx000_common.c
index a18c8f45a2e..315e09e95b0 100644
--- a/drivers/media/dvb/frontends/dibx000_common.c
+++ b/drivers/media/dvb/frontends/dibx000_common.c
@@ -105,9 +105,9 @@ struct i2c_adapter * dibx000_get_i2c_adapter(struct dibx000_i2c_master *mst, enu
 }
 EXPORT_SYMBOL(dibx000_get_i2c_adapter);
 
-static int i2c_adapter_init(struct i2c_adapter *i2c_adap, struct i2c_algorithm *algo, const char name[I2C_NAME_SIZE], struct dibx000_i2c_master *mst)
+static int i2c_adapter_init(struct i2c_adapter *i2c_adap, struct i2c_algorithm *algo, const char *name, struct dibx000_i2c_master *mst)
 {
-	strncpy(i2c_adap->name, name, I2C_NAME_SIZE);
+	strncpy(i2c_adap->name, name, sizeof(i2c_adap->name));
 	i2c_adap->class     = I2C_CLASS_TV_DIGITAL,
 	i2c_adap->algo      = algo;
 	i2c_adap->algo_data = NULL;
diff --git a/drivers/media/video/cx2341x.c b/drivers/media/video/cx2341x.c
index 88dbdddeec4..d73c86aeeaa 100644
--- a/drivers/media/video/cx2341x.c
+++ b/drivers/media/video/cx2341x.c
@@ -26,7 +26,6 @@
 #include <linux/init.h>
 #include <linux/types.h>
 #include <linux/videodev2.h>
-#include <linux/i2c.h>
 
 #include <media/tuner.h>
 #include <media/cx2341x.h>
diff --git a/drivers/media/video/ovcamchip/ovcamchip_priv.h b/drivers/media/video/ovcamchip/ovcamchip_priv.h
index 1231335a9f4..50c7763d44b 100644
--- a/drivers/media/video/ovcamchip/ovcamchip_priv.h
+++ b/drivers/media/video/ovcamchip/ovcamchip_priv.h
@@ -15,6 +15,7 @@
 #ifndef __LINUX_OVCAMCHIP_PRIV_H
 #define __LINUX_OVCAMCHIP_PRIV_H
 
+#include <linux/i2c.h>
 #include <media/ovcamchip.h>
 
 #ifdef DEBUG
diff --git a/drivers/media/video/usbvision/usbvision-cards.c b/drivers/media/video/usbvision/usbvision-cards.c
index 13f69fe6360..51ab265d566 100644
--- a/drivers/media/video/usbvision/usbvision-cards.c
+++ b/drivers/media/video/usbvision/usbvision-cards.c
@@ -24,7 +24,6 @@
 
 
 #include <linux/list.h>
-#include <linux/i2c.h>
 #include <media/v4l2-dev.h>
 #include <media/tuner.h>
 #include "usbvision.h"
diff --git a/drivers/video/intelfb/intelfb_i2c.c b/drivers/video/intelfb/intelfb_i2c.c
index f4ede5f6b58..61e4c8759b2 100644
--- a/drivers/video/intelfb/intelfb_i2c.c
+++ b/drivers/video/intelfb/intelfb_i2c.c
@@ -104,7 +104,8 @@ static int intelfb_setup_i2c_bus(struct intelfb_info *dinfo,
 
 	chan->dinfo					= dinfo;
 	chan->reg					= reg;
-	snprintf(chan->adapter.name, I2C_NAME_SIZE, "intelfb %s", name);
+	snprintf(chan->adapter.name, sizeof(chan->adapter.name),
+		 "intelfb %s", name);
 	chan->adapter.owner			= THIS_MODULE;
 	chan->adapter.id			= I2C_HW_B_INTELFB;
 	chan->adapter.algo_data		= &chan->algo;
diff --git a/drivers/video/matrox/i2c-matroxfb.c b/drivers/video/matrox/i2c-matroxfb.c
index 5ec718a5fe2..4baab7be58d 100644
--- a/drivers/video/matrox/i2c-matroxfb.c
+++ b/drivers/video/matrox/i2c-matroxfb.c
@@ -111,7 +111,7 @@ static int i2c_bus_reg(struct i2c_bit_adapter* b, struct matrox_fb_info* minfo,
 	b->mask.data = data;
 	b->mask.clock = clock;
 	b->adapter = matrox_i2c_adapter_template;
-	snprintf(b->adapter.name, I2C_NAME_SIZE, name,
+	snprintf(b->adapter.name, sizeof(b->adapter.name), name,
 		minfo->fbcon.node);
 	i2c_set_adapdata(&b->adapter, b);
 	b->adapter.algo_data = &b->bac;
author	Linus Torvalds <torvalds@woody.linux-foundation.org>	2007-05-04 17:46:27 -0700
committer	Linus Torvalds <torvalds@woody.linux-foundation.org>	2007-05-04 17:46:27 -0700
commit	8d41f0e8d51742aba5bbcab9acb5238a8578c917 (patch)
tree	c69e7ffaf2a8598283422d20643154a298d08293 /drivers
parent	8bc8493063f938c932819958a7b5a0d56046bc96 (diff)
parent	5b68790cd5e2879067bcbc45b01eeb6081e7d731 (diff)