Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

Conflicts:

	drivers/power/Makefile

18 files changed, 1209 insertions, 218 deletions

diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 6ee997b2817..acadbc51fc0 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -55,7 +55,7 @@ config I2C_AMD756
 
 config I2C_AMD756_S4882
 	tristate "SMBus multiplexing on the Tyan S4882"
-	depends on I2C_AMD756 && EXPERIMENTAL
+	depends on I2C_AMD756 && X86 && EXPERIMENTAL
 	help
 	  Enabling this option will add specific SMBus support for the Tyan
 	  S4882 motherboard.  On this 4-CPU board, the SMBus is multiplexed
@@ -148,7 +148,7 @@ config I2C_NFORCE2
 
 config I2C_NFORCE2_S4985
 	tristate "SMBus multiplexing on the Tyan S4985"
-	depends on I2C_NFORCE2 && EXPERIMENTAL
+	depends on I2C_NFORCE2 && X86 && EXPERIMENTAL
 	help
 	  Enabling this option will add specific SMBus support for the Tyan
 	  S4985 motherboard.  On this 4-CPU board, the SMBus is multiplexed
@@ -209,7 +209,7 @@ config I2C_VIA
 	  will be called i2c-via.
 
 config I2C_VIAPRO
-	tristate "VIA VT82C596/82C686/82xx and CX700"
+	tristate "VIA VT82C596/82C686/82xx and CX700/VX800/VX820"
 	depends on PCI
 	help
 	  If you say yes to this option, support will be included for the VIA
@@ -223,6 +223,8 @@ config I2C_VIAPRO
 	    VT8237R/A/S
 	    VT8251
 	    CX700
+	    VX800
+	    VX820
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-viapro.
@@ -330,6 +332,18 @@ config I2C_GPIO
 	  This is a very simple bitbanging I2C driver utilizing the
 	  arch-neutral GPIO API to control the SCL and SDA lines.
 
+config I2C_HIGHLANDER
+	tristate "Highlander FPGA SMBus interface"
+	depends on SH_HIGHLANDER
+	help
+	  If you say yes to this option, support will be included for
+	  the SMBus interface located in the FPGA on various Highlander
+	  boards, particularly the R0P7780LC0011RL and R0P7785LC0011RL
+	  FPGAs. This is wholly unrelated to the SoC I2C.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called i2c-highlander.
+
 config I2C_IBM_IIC
 	tristate "IBM PPC 4xx on-chip I2C interface"
 	depends on 4xx
diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
index 97dbfa2107f..0c2c4b26cdf 100644
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@@ -31,6 +31,7 @@ obj-$(CONFIG_I2C_BLACKFIN_TWI)	+= i2c-bfin-twi.o
 obj-$(CONFIG_I2C_CPM)		+= i2c-cpm.o
 obj-$(CONFIG_I2C_DAVINCI)	+= i2c-davinci.o
 obj-$(CONFIG_I2C_GPIO)		+= i2c-gpio.o
+obj-$(CONFIG_I2C_HIGHLANDER)	+= i2c-highlander.o
 obj-$(CONFIG_I2C_IBM_IIC)	+= i2c-ibm_iic.o
 obj-$(CONFIG_I2C_IOP3XX)	+= i2c-iop3xx.o
 obj-$(CONFIG_I2C_IXP2000)	+= i2c-ixp2000.o
diff --git a/drivers/i2c/busses/i2c-highlander.c b/drivers/i2c/busses/i2c-highlander.c
new file mode 100644
index 00000000000..f4d22ae9d29
--- /dev/null
+++ b/drivers/i2c/busses/i2c-highlander.c
@@ -0,0 +1,498 @@
+/*
+ * Renesas Solutions Highlander FPGA I2C/SMBus support.
+ *
+ * Supported devices: R0P7780LC0011RL, R0P7785LC0011RL
+ *
+ * Copyright (C) 2008  Paul Mundt
+ * Copyright (C) 2008  Renesas Solutions Corp.
+ * Copyright (C) 2008  Atom Create Engineering Co., Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License version 2. See the file "COPYING" in the main directory
+ * of this archive for more details.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/completion.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+
+#define SMCR		0x00
+#define SMCR_START	(1 << 0)
+#define SMCR_IRIC	(1 << 1)
+#define SMCR_BBSY	(1 << 2)
+#define SMCR_ACKE	(1 << 3)
+#define SMCR_RST	(1 << 4)
+#define SMCR_IEIC	(1 << 6)
+
+#define SMSMADR		0x02
+
+#define SMMR		0x04
+#define SMMR_MODE0	(1 << 0)
+#define SMMR_MODE1	(1 << 1)
+#define SMMR_CAP	(1 << 3)
+#define SMMR_TMMD	(1 << 4)
+#define SMMR_SP		(1 << 7)
+
+#define SMSADR		0x06
+#define SMTRDR		0x46
+
+struct highlander_i2c_dev {
+	struct device		*dev;
+	void __iomem		*base;
+	struct i2c_adapter	adapter;
+	struct completion	cmd_complete;
+	unsigned long		last_read_time;
+	int			irq;
+	u8			*buf;
+	size_t			buf_len;
+};
+
+static int iic_force_poll, iic_force_normal;
+static int iic_timeout = 1000, iic_read_delay;
+
+static inline void highlander_i2c_irq_enable(struct highlander_i2c_dev *dev)
+{
+	iowrite16(ioread16(dev->base + SMCR) | SMCR_IEIC, dev->base + SMCR);
+}
+
+static inline void highlander_i2c_irq_disable(struct highlander_i2c_dev *dev)
+{
+	iowrite16(ioread16(dev->base + SMCR) & ~SMCR_IEIC, dev->base + SMCR);
+}
+
+static inline void highlander_i2c_start(struct highlander_i2c_dev *dev)
+{
+	iowrite16(ioread16(dev->base + SMCR) | SMCR_START, dev->base + SMCR);
+}
+
+static inline void highlander_i2c_done(struct highlander_i2c_dev *dev)
+{
+	iowrite16(ioread16(dev->base + SMCR) | SMCR_IRIC, dev->base + SMCR);
+}
+
+static void highlander_i2c_setup(struct highlander_i2c_dev *dev)
+{
+	u16 smmr;
+
+	smmr = ioread16(dev->base + SMMR);
+	smmr |= SMMR_TMMD;
+
+	if (iic_force_normal)
+		smmr &= ~SMMR_SP;
+	else
+		smmr |= SMMR_SP;
+
+	iowrite16(smmr, dev->base + SMMR);
+}
+
+static void smbus_write_data(u8 *src, u16 *dst, int len)
+{
+	for (; len > 1; len -= 2) {
+		*dst++ = be16_to_cpup((u16 *)src);
+		src += 2;
+	}
+
+	if (len)
+		*dst = *src << 8;
+}
+
+static void smbus_read_data(u16 *src, u8 *dst, int len)
+{
+	for (; len > 1; len -= 2) {
+		*(u16 *)dst = cpu_to_be16p(src++);
+		dst += 2;
+	}
+
+	if (len)
+		*dst = *src >> 8;
+}
+
+static void highlander_i2c_command(struct highlander_i2c_dev *dev,
+				   u8 command, int len)
+{
+	unsigned int i;
+	u16 cmd = (command << 8) | command;
+
+	for (i = 0; i < len; i += 2) {
+		if (len - i == 1)
+			cmd = command << 8;
+		iowrite16(cmd, dev->base + SMSADR + i);
+		dev_dbg(dev->dev, "command data[%x] 0x%04x\n", i/2, cmd);
+	}
+}
+
+static int highlander_i2c_wait_for_bbsy(struct highlander_i2c_dev *dev)
+{
+	unsigned long timeout;
+
+	timeout = jiffies + msecs_to_jiffies(iic_timeout);
+	while (ioread16(dev->base + SMCR) & SMCR_BBSY) {
+		if (time_after(jiffies, timeout)) {
+			dev_warn(dev->dev, "timeout waiting for bus ready\n");
+			return -ETIMEDOUT;
+		}
+
+		msleep(1);
+	}
+
+	return 0;
+}
+
+static int highlander_i2c_reset(struct highlander_i2c_dev *dev)
+{
+	iowrite16(ioread16(dev->base + SMCR) | SMCR_RST, dev->base + SMCR);
+	return highlander_i2c_wait_for_bbsy(dev);
+}
+
+static int highlander_i2c_wait_for_ack(struct highlander_i2c_dev *dev)
+{
+	u16 tmp = ioread16(dev->base + SMCR);
+
+	if ((tmp & (SMCR_IRIC | SMCR_ACKE)) == SMCR_ACKE) {
+		dev_warn(dev->dev, "ack abnormality\n");
+		return highlander_i2c_reset(dev);
+	}
+
+	return 0;
+}
+
+static irqreturn_t highlander_i2c_irq(int irq, void *dev_id)
+{
+	struct highlander_i2c_dev *dev = dev_id;
+
+	highlander_i2c_done(dev);
+	complete(&dev->cmd_complete);
+
+	return IRQ_HANDLED;
+}
+
+static void highlander_i2c_poll(struct highlander_i2c_dev *dev)
+{
+	unsigned long timeout;
+	u16 smcr;
+
+	timeout = jiffies + msecs_to_jiffies(iic_timeout);
+	for (;;) {
+		smcr = ioread16(dev->base + SMCR);
+
+		/*
+		 * Don't bother checking ACKE here, this and the reset
+		 * are handled in highlander_i2c_wait_xfer_done() when
+		 * waiting for the ACK.
+		 */
+
+		if (smcr & SMCR_IRIC)
+			return;
+		if (time_after(jiffies, timeout))
+			break;
+
+		cpu_relax();
+		cond_resched();
+	}
+
+	dev_err(dev->dev, "polling timed out\n");
+}
+
+static inline int highlander_i2c_wait_xfer_done(struct highlander_i2c_dev *dev)
+{
+	if (dev->irq)
+		wait_for_completion_timeout(&dev->cmd_complete,
+					  msecs_to_jiffies(iic_timeout));
+	else
+		/* busy looping, the IRQ of champions */
+		highlander_i2c_poll(dev);
+
+	return highlander_i2c_wait_for_ack(dev);
+}
+
+static int highlander_i2c_read(struct highlander_i2c_dev *dev)
+{
+	int i, cnt;
+	u16 data[16];
+
+	if (highlander_i2c_wait_for_bbsy(dev))
+		return -EAGAIN;
+
+	highlander_i2c_start(dev);
+
+	if (highlander_i2c_wait_xfer_done(dev)) {
+		dev_err(dev->dev, "Arbitration loss\n");
+		return -EAGAIN;
+	}
+
+	/*
+	 * The R0P7780LC0011RL FPGA needs a significant delay between
+	 * data read cycles, otherwise the transciever gets confused and
+	 * garbage is returned when the read is subsequently aborted.
+	 *
+	 * It is not sufficient to wait for BBSY.
+	 *
+	 * While this generally only applies to the older SH7780-based
+	 * Highlanders, the same issue can be observed on SH7785 ones,
+	 * albeit less frequently. SH7780-based Highlanders may need
+	 * this to be as high as 1000 ms.
+	 */
+	if (iic_read_delay && time_before(jiffies, dev->last_read_time +
+				 msecs_to_jiffies(iic_read_delay)))
+		msleep(jiffies_to_msecs((dev->last_read_time +
+				msecs_to_jiffies(iic_read_delay)) - jiffies));
+
+	cnt = (dev->buf_len + 1) >> 1;
+	for (i = 0; i < cnt; i++) {
+		data[i] = ioread16(dev->base + SMTRDR + (i * sizeof(u16)));
+		dev_dbg(dev->dev, "read data[%x] 0x%04x\n", i, data[i]);
+	}
+
+	smbus_read_data(data, dev->buf, dev->buf_len);
+
+	dev->last_read_time = jiffies;
+
+	return 0;
+}
+
+static int highlander_i2c_write(struct highlander_i2c_dev *dev)
+{
+	int i, cnt;
+	u16 data[16];
+
+	smbus_write_data(dev->buf, data, dev->buf_len);
+
+	cnt = (dev->buf_len + 1) >> 1;
+	for (i = 0; i < cnt; i++) {
+		iowrite16(data[i], dev->base + SMTRDR + (i * sizeof(u16)));
+		dev_dbg(dev->dev, "write data[%x] 0x%04x\n", i, data[i]);
+	}
+
+	if (highlander_i2c_wait_for_bbsy(dev))
+		return -EAGAIN;
+
+	highlander_i2c_start(dev);
+
+	return highlander_i2c_wait_xfer_done(dev);
+}
+
+static int highlander_i2c_smbus_xfer(struct i2c_adapter *adap, u16 addr,
+				  unsigned short flags, char read_write,
+				  u8 command, int size,
+				  union i2c_smbus_data *data)
+{
+	struct highlander_i2c_dev *dev = i2c_get_adapdata(adap);
+	int read = read_write & I2C_SMBUS_READ;
+	u16 tmp;
+
+	init_completion(&dev->cmd_complete);
+
+	dev_dbg(dev->dev, "addr %04x, command %02x, read_write %d, size %d\n",
+		addr, command, read_write, size);
+
+	/*
+	 * Set up the buffer and transfer size
+	 */
+	switch (size) {
+	case I2C_SMBUS_BYTE_DATA:
+		dev->buf = &data->byte;
+		dev->buf_len = 1;
+		break;
+	case I2C_SMBUS_I2C_BLOCK_DATA:
+		dev->buf = &data->block[1];
+		dev->buf_len = data->block[0];
+		break;
+	default:
+		dev_err(dev->dev, "unsupported command %d\n", size);
+		return -EINVAL;
+	}
+
+	/*
+	 * Encode the mode setting
+	 */
+	tmp = ioread16(dev->base + SMMR);
+	tmp &= ~(SMMR_MODE0 | SMMR_MODE1);
+
+	switch (dev->buf_len) {
+	case 1:
+		/* default */
+		break;
+	case 8:
+		tmp |= SMMR_MODE0;
+		break;
+	case 16:
+		tmp |= SMMR_MODE1;
+		break;
+	case 32:
+		tmp |= (SMMR_MODE0 | SMMR_MODE1);
+		break;
+	default:
+		dev_err(dev->dev, "unsupported xfer size %d\n", dev->buf_len);
+		return -EINVAL;
+	}
+
+	iowrite16(tmp, dev->base + SMMR);
+
+	/* Ensure we're in a sane state */
+	highlander_i2c_done(dev);
+
+	/* Set slave address */
+	iowrite16((addr << 1) | read, dev->base + SMSMADR);
+
+	highlander_i2c_command(dev, command, dev->buf_len);
+
+	if (read)
+		return highlander_i2c_read(dev);
+	else
+		return highlander_i2c_write(dev);
+}
+
+static u32 highlander_i2c_func(struct i2c_adapter *adapter)
+{
+	return I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_I2C_BLOCK;
+}
+
+static const struct i2c_algorithm highlander_i2c_algo = {
+	.smbus_xfer	= highlander_i2c_smbus_xfer,
+	.functionality	= highlander_i2c_func,
+};
+
+static int __devinit highlander_i2c_probe(struct platform_device *pdev)
+{
+	struct highlander_i2c_dev *dev;
+	struct i2c_adapter *adap;
+	struct resource *res;
+	int ret;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (unlikely(!res)) {
+		dev_err(&pdev->dev, "no mem resource\n");
+		return -ENODEV;
+	}
+
+	dev = kzalloc(sizeof(struct highlander_i2c_dev), GFP_KERNEL);
+	if (unlikely(!dev))
+		return -ENOMEM;
+
+	dev->base = ioremap_nocache(res->start, res->end - res->start + 1);
+	if (unlikely(!dev->base)) {
+		ret = -ENXIO;
+		goto err;
+	}
+
+	dev->dev = &pdev->dev;
+	platform_set_drvdata(pdev, dev);
+
+	dev->irq = platform_get_irq(pdev, 0);
+	if (iic_force_poll)
+		dev->irq = 0;
+
+	if (dev->irq) {
+		ret = request_irq(dev->irq, highlander_i2c_irq, IRQF_DISABLED,
+				  pdev->name, dev);
+		if (unlikely(ret))
+			goto err_unmap;
+
+		highlander_i2c_irq_enable(dev);
+	} else {
+		dev_notice(&pdev->dev, "no IRQ, using polling mode\n");
+		highlander_i2c_irq_disable(dev);
+	}
+
+	dev->last_read_time = jiffies;	/* initial read jiffies */
+
+	highlander_i2c_setup(dev);
+
+	adap = &dev->adapter;
+	i2c_set_adapdata(adap, dev);
+	adap->owner = THIS_MODULE;
+	adap->class = I2C_CLASS_HWMON;
+	strlcpy(adap->name, "HL FPGA I2C adapter", sizeof(adap->name));
+	adap->algo = &highlander_i2c_algo;
+	adap->dev.parent = &pdev->dev;
+	adap->nr = pdev->id;
+
+	/*
+	 * Reset the adapter
+	 */
+	ret = highlander_i2c_reset(dev);
+	if (unlikely(ret)) {
+		dev_err(&pdev->dev, "controller didn't come up\n");
+		goto err_free_irq;
+	}
+
+	ret = i2c_add_numbered_adapter(adap);
+	if (unlikely(ret)) {
+		dev_err(&pdev->dev, "failure adding adapter\n");
+		goto err_free_irq;
+	}
+
+	return 0;
+
+err_free_irq:
+	if (dev->irq)
+		free_irq(dev->irq, dev);
+err_unmap:
+	iounmap(dev->base);
+err:
+	kfree(dev);
+
+	platform_set_drvdata(pdev, NULL);
+
+	return ret;
+}
+
+static int __devexit highlander_i2c_remove(struct platform_device *pdev)
+{
+	struct highlander_i2c_dev *dev = platform_get_drvdata(pdev);
+
+	i2c_del_adapter(&dev->adapter);
+
+	if (dev->irq)
+		free_irq(dev->irq, dev);
+
+	iounmap(dev->base);
+	kfree(dev);
+
+	platform_set_drvdata(pdev, NULL);
+
+	return 0;
+}
+
+static struct platform_driver highlander_i2c_driver = {
+	.driver		= {
+		.name	= "i2c-highlander",
+		.owner	= THIS_MODULE,
+	},
+
+	.probe		= highlander_i2c_probe,
+	.remove		= __devexit_p(highlander_i2c_remove),
+};
+
+static int __init highlander_i2c_init(void)
+{
+	return platform_driver_register(&highlander_i2c_driver);
+}
+
+static void __exit highlander_i2c_exit(void)
+{
+	platform_driver_unregister(&highlander_i2c_driver);
+}
+
+module_init(highlander_i2c_init);
+module_exit(highlander_i2c_exit);
+
+MODULE_AUTHOR("Paul Mundt");
+MODULE_DESCRIPTION("Renesas Highlander FPGA I2C/SMBus adapter");
+MODULE_LICENSE("GPL v2");
+
+module_param(iic_force_poll, bool, 0);
+module_param(iic_force_normal, bool, 0);
+module_param(iic_timeout, int, 0);
+module_param(iic_read_delay, int, 0);
+
+MODULE_PARM_DESC(iic_force_poll, "Force polling mode");
+MODULE_PARM_DESC(iic_force_normal,
+		 "Force normal mode (100 kHz), default is fast mode (400 kHz)");
+MODULE_PARM_DESC(iic_timeout, "Set timeout value in msecs (default 1000 ms)");
+MODULE_PARM_DESC(iic_read_delay,
+		 "Delay between data read cycles (default 0 ms)");
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
index 27443f073bc..a9a45fcc854 100644
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c
@@ -312,7 +312,6 @@ static struct i2c_adapter mpc_ops = {
 	.name = "MPC adapter",
 	.id = I2C_HW_MPC107,
 	.algo = &mpc_algo,
-	.class = I2C_CLASS_HWMON | I2C_CLASS_SPD,
 	.timeout = 1,
 };
 
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index e7eb7bf9dde..608038d64f8 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -589,11 +589,16 @@ omap_i2c_probe(struct platform_device *pdev)
 
 	dev->dev = &pdev->dev;
 	dev->irq = irq->start;
-	dev->base = (void __iomem *) IO_ADDRESS(mem->start);
+	dev->base = ioremap(mem->start, mem->end - mem->start + 1);
+	if (!dev->base) {
+		r = -ENOMEM;
+		goto err_free_mem;
+	}
+
 	platform_set_drvdata(pdev, dev);
 
 	if ((r = omap_i2c_get_clocks(dev)) != 0)
-		goto err_free_mem;
+		goto err_iounmap;
 
 	omap_i2c_unidle(dev);
 
@@ -640,6 +645,8 @@ err_unuse_clocks:
 	omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, 0);
 	omap_i2c_idle(dev);
 	omap_i2c_put_clocks(dev);
+err_iounmap:
+	iounmap(dev->base);
 err_free_mem:
 	platform_set_drvdata(pdev, NULL);
 	kfree(dev);
@@ -661,6 +668,7 @@ omap_i2c_remove(struct platform_device *pdev)
 	i2c_del_adapter(&dev->adapter);
 	omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, 0);
 	omap_i2c_put_clocks(dev);
+	iounmap(dev->base);
 	kfree(dev);
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	release_mem_region(mem->start, (mem->end - mem->start) + 1);
diff --git a/drivers/i2c/busses/i2c-parport-light.c b/drivers/i2c/busses/i2c-parport-light.c
index c6faf9bdad1..b2b8380f660 100644
--- a/drivers/i2c/busses/i2c-parport-light.c
+++ b/drivers/i2c/busses/i2c-parport-light.c
@@ -123,11 +123,6 @@ static struct i2c_adapter parport_adapter = {
 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);
@@ -138,29 +133,19 @@ static int __devinit i2c_parport_probe(struct platform_device *pdev)
 
 	parport_adapter.dev.parent = &pdev->dev;
 	err = i2c_bit_add_bus(&parport_adapter);
-	if (err) {
+	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;
 }
 
@@ -175,12 +160,6 @@ static struct platform_driver i2c_parport_driver = {
 
 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);
@@ -190,13 +169,6 @@ static int __init i2c_parport_device_add(u16 address)
 		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",
@@ -231,13 +203,16 @@ static int __init i2c_parport_init(void)
 		base = DEFAULT_BASE;
 	}
 
+	if (!request_region(base, 3, DRVNAME))
+		return -EBUSY;
+
         if (!adapter_parm[type].getscl.val)
 		parport_algo_data.getscl = NULL;
 
 	/* Sets global pdev as a side effect */
 	err = i2c_parport_device_add(base);
 	if (err)
-		goto exit;
+		goto exit_release;
 
 	err = platform_driver_register(&i2c_parport_driver);
 	if (err)
@@ -247,7 +222,8 @@ static int __init i2c_parport_init(void)
 
 exit_device:
 	platform_device_unregister(pdev);
-exit:
+exit_release:
+	release_region(base, 3);
 	return err;
 }
 
@@ -255,6 +231,7 @@ static void __exit i2c_parport_exit(void)
 {
 	platform_driver_unregister(&i2c_parport_driver);
 	platform_device_unregister(pdev);
+	release_region(base, 3);
 }
 
 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
diff --git a/drivers/i2c/busses/i2c-pca-isa.c b/drivers/i2c/busses/i2c-pca-isa.c
index a119784bae1..9eb76268ec7 100644
--- a/drivers/i2c/busses/i2c-pca-isa.c
+++ b/drivers/i2c/busses/i2c-pca-isa.c
@@ -36,8 +36,8 @@
 #define DRIVER "i2c-pca-isa"
 #define IO_SIZE 4
 
-static unsigned long base   = 0x330;
-static int irq 	  = 10;
+static unsigned long base;
+static int irq = -1;
 
 /* Data sheet recommends 59kHz for 100kHz operation due to variation
  * in the actual clock rate */
@@ -107,13 +107,26 @@ static struct i2c_adapter pca_isa_ops = {
 	.timeout	= 100,
 };
 
+static int __devinit pca_isa_match(struct device *dev, unsigned int id)
+{
+	int match = base != 0;
+
+	if (match) {
+		if (irq <= -1)
+			dev_warn(dev, "Using polling mode (specify irq)\n");
+	} else
+		dev_err(dev, "Please specify I/O base\n");
+
+	return match;
+}
+
 static int __devinit pca_isa_probe(struct device *dev, unsigned int id)
 {
 	init_waitqueue_head(&pca_wait);
 
 	dev_info(dev, "i/o base %#08lx. irq %d\n", base, irq);
 
-#ifdef CONFIG_PPC_MERGE
+#ifdef CONFIG_PPC
 	if (check_legacy_ioport(base)) {
 		dev_err(dev, "I/O address %#08lx is not available\n", base);
 		goto out;
@@ -153,7 +166,7 @@ static int __devexit pca_isa_remove(struct device *dev, unsigned int id)
 {
 	i2c_del_adapter(&pca_isa_ops);
 
-	if (irq > 0) {
+	if (irq > -1) {
 		disable_irq(irq);
 		free_irq(irq, &pca_isa_ops);
 	}
@@ -163,6 +176,7 @@ static int __devexit pca_isa_remove(struct device *dev, unsigned int id)
 }
 
 static struct isa_driver pca_isa_driver = {
+	.match		= pca_isa_match,
 	.probe		= pca_isa_probe,
 	.remove		= __devexit_p(pca_isa_remove),
 	.driver = {
diff --git a/drivers/i2c/busses/i2c-powermac.c b/drivers/i2c/busses/i2c-powermac.c
index 22f6d5c00d8..60ca91745e5 100644
--- a/drivers/i2c/busses/i2c-powermac.c
+++ b/drivers/i2c/busses/i2c-powermac.c
@@ -180,7 +180,7 @@ static const struct i2c_algorithm i2c_powermac_algorithm = {
 };
 
 
-static int i2c_powermac_remove(struct platform_device *dev)
+static int __devexit i2c_powermac_remove(struct platform_device *dev)
 {
 	struct i2c_adapter	*adapter = platform_get_drvdata(dev);
 	struct pmac_i2c_bus	*bus = i2c_get_adapdata(adapter);
@@ -200,7 +200,7 @@ static int i2c_powermac_remove(struct platform_device *dev)
 }
 
 
-static int __devexit i2c_powermac_probe(struct platform_device *dev)
+static int __devinit i2c_powermac_probe(struct platform_device *dev)
 {
 	struct pmac_i2c_bus *bus = dev->dev.platform_data;
 	struct device_node *parent = NULL;
@@ -259,6 +259,35 @@ static int __devexit i2c_powermac_probe(struct platform_device *dev)
 	}
 
 	printk(KERN_INFO "PowerMac i2c bus %s registered\n", name);
+
+	if (!strncmp(basename, "uni-n", 5)) {
+		struct device_node *np;
+		const u32 *prop;
+		struct i2c_board_info info;
+
+		/* Instantiate I2C motion sensor if present */
+		np = of_find_node_by_name(NULL, "accelerometer");
+		if (np && of_device_is_compatible(np, "AAPL,accelerometer_1") &&
+		    (prop = of_get_property(np, "reg", NULL))) {
+			int i2c_bus;
+			const char *tmp_bus;
+
+			/* look for bus either using "reg" or by path */
+			tmp_bus = strstr(np->full_name, "/i2c-bus@");
+			if (tmp_bus)
+				i2c_bus = *(tmp_bus + 9) - '0';
+			else
+				i2c_bus = ((*prop) >> 8) & 0x0f;
+
+			if (pmac_i2c_get_channel(bus) == i2c_bus) {
+				memset(&info, 0, sizeof(struct i2c_board_info));
+				info.addr = ((*prop) & 0xff) >> 1;
+				strlcpy(info.type, "ams", I2C_NAME_SIZE);
+				i2c_new_device(adapter, &info);
+			}
+		}
+	}
+
 	return rc;
 }
 
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index 44d838410f1..906f9b9d715 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -38,7 +38,44 @@
 #include <asm/irq.h>
 #include <asm/io.h>
 #include <mach/i2c.h>
-#include <mach/pxa-regs.h>
+
+/*
+ * I2C registers and bit definitions
+ */
+#define IBMR		(0x00)
+#define IDBR		(0x08)
+#define ICR		(0x10)
+#define ISR		(0x18)
+#define ISAR		(0x20)
+
+#define ICR_START	(1 << 0)	   /* start bit */
+#define ICR_STOP	(1 << 1)	   /* stop bit */
+#define ICR_ACKNAK	(1 << 2)	   /* send ACK(0) or NAK(1) */
+#define ICR_TB		(1 << 3)	   /* transfer byte bit */
+#define ICR_MA		(1 << 4)	   /* master abort */
+#define ICR_SCLE	(1 << 5)	   /* master clock enable */
+#define ICR_IUE		(1 << 6)	   /* unit enable */
+#define ICR_GCD		(1 << 7)	   /* general call disable */
+#define ICR_ITEIE	(1 << 8)	   /* enable tx interrupts */
+#define ICR_IRFIE	(1 << 9)	   /* enable rx interrupts */
+#define ICR_BEIE	(1 << 10)	   /* enable bus error ints */
+#define ICR_SSDIE	(1 << 11)	   /* slave STOP detected int enable */
+#define ICR_ALDIE	(1 << 12)	   /* enable arbitration interrupt */
+#define ICR_SADIE	(1 << 13)	   /* slave address detected int enable */
+#define ICR_UR		(1 << 14)	   /* unit reset */
+#define ICR_FM		(1 << 15)	   /* fast mode */
+
+#define ISR_RWM		(1 << 0)	   /* read/write mode */
+#define ISR_ACKNAK	(1 << 1)	   /* ack/nak status */
+#define ISR_UB		(1 << 2)	   /* unit busy */
+#define ISR_IBB		(1 << 3)	   /* bus busy */
+#define ISR_SSD		(1 << 4)	   /* slave stop detected */
+#define ISR_ALD		(1 << 5)	   /* arbitration loss detected */
+#define ISR_ITE		(1 << 6)	   /* tx buffer empty */
+#define ISR_IRF		(1 << 7)	   /* rx buffer full */
+#define ISR_GCAD	(1 << 8)	   /* general call address detected */
+#define ISR_SAD		(1 << 9)	   /* slave address detected */
+#define ISR_BED		(1 << 10)	   /* bus error no ACK/NAK */
 
 struct pxa_i2c {
 	spinlock_t		lock;
@@ -60,19 +97,21 @@ struct pxa_i2c {
 	u32			icrlog[32];
 
 	void __iomem		*reg_base;
+	unsigned int		reg_shift;
 
 	unsigned long		iobase;
 	unsigned long		iosize;
 
 	int			irq;
-	int			use_pio;
+	unsigned int		use_pio :1;
+	unsigned int		fast_mode :1;
 };
 
-#define _IBMR(i2c)	((i2c)->reg_base + 0)
-#define _IDBR(i2c)	((i2c)->reg_base + 8)
-#define _ICR(i2c)	((i2c)->reg_base + 0x10)
-#define _ISR(i2c)	((i2c)->reg_base + 0x18)
-#define _ISAR(i2c)	((i2c)->reg_base + 0x20)
+#define _IBMR(i2c)	((i2c)->reg_base + (0x0 << (i2c)->reg_shift))
+#define _IDBR(i2c)	((i2c)->reg_base + (0x4 << (i2c)->reg_shift))
+#define _ICR(i2c)	((i2c)->reg_base + (0x8 << (i2c)->reg_shift))
+#define _ISR(i2c)	((i2c)->reg_base + (0xc << (i2c)->reg_shift))
+#define _ISAR(i2c)	((i2c)->reg_base + (0x10 << (i2c)->reg_shift))
 
 /*
  * I2C Slave mode address
@@ -188,14 +227,14 @@ static inline int i2c_pxa_is_slavemode(struct pxa_i2c *i2c)
 
 static void i2c_pxa_abort(struct pxa_i2c *i2c)
 {
-	unsigned long timeout = jiffies + HZ/4;
+	int i = 250;
 
 	if (i2c_pxa_is_slavemode(i2c)) {
 		dev_dbg(&i2c->adap.dev, "%s: called in slave mode\n", __func__);
 		return;
 	}
 
-	while (time_before(jiffies, timeout) && (readl(_IBMR(i2c)) & 0x1) == 0) {
+	while ((i > 0) && (readl(_IBMR(i2c)) & 0x1) == 0) {
 		unsigned long icr = readl(_ICR(i2c));
 
 		icr &= ~ICR_START;
@@ -205,7 +244,8 @@ static void i2c_pxa_abort(struct pxa_i2c *i2c)
 
 		show_state(i2c);
 
-		msleep(1);
+		mdelay(1);
+		i --;
 	}
 
 	writel(readl(_ICR(i2c)) & ~(ICR_MA | ICR_START | ICR_STOP),
@@ -364,7 +404,7 @@ static void i2c_pxa_reset(struct pxa_i2c *i2c)
 	writel(i2c->slave_addr, _ISAR(i2c));
 
 	/* set control register values */
-	writel(I2C_ICR_INIT, _ICR(i2c));
+	writel(I2C_ICR_INIT | (i2c->fast_mode ? ICR_FM : 0), _ICR(i2c));
 
 #ifdef CONFIG_I2C_PXA_SLAVE
 	dev_info(&i2c->adap.dev, "Enabling slave mode\n");
@@ -907,12 +947,6 @@ static int i2c_pxa_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num
 	struct pxa_i2c *i2c = adap->algo_data;
 	int ret, i;
 
-	/* If the I2C controller is disabled we need to reset it (probably due
- 	   to a suspend/resume destroying state). We do this here as we can then
- 	   avoid worrying about resuming the controller before its users. */
-	if (!(readl(_ICR(i2c)) & ICR_IUE))
-		i2c_pxa_reset(i2c);
-
 	for (i = adap->retries; i >= 0; i--) {
 		ret = i2c_pxa_do_xfer(i2c, msgs, num);
 		if (ret != I2C_RETRY)
@@ -993,6 +1027,7 @@ static int i2c_pxa_probe(struct platform_device *dev)
 		ret = -EIO;
 		goto eremap;
 	}
+	i2c->reg_shift = (cpu_is_pxa3xx() && (dev->id == 1)) ? 0 : 1;
 
 	i2c->iobase = res->start;
 	i2c->iosize = res_len(res);
@@ -1013,6 +1048,7 @@ static int i2c_pxa_probe(struct platform_device *dev)
 	if (plat) {
 		i2c->adap.class = plat->class;
 		i2c->use_pio = plat->use_pio;
+		i2c->fast_mode = plat->fast_mode;
 	}
 
 	if (i2c->use_pio) {
@@ -1082,9 +1118,33 @@ static int __exit i2c_pxa_remove(struct platform_device *dev)
 	return 0;
 }
 
+#ifdef CONFIG_PM
+static int i2c_pxa_suspend_late(struct platform_device *dev, pm_message_t state)
+{
+	struct pxa_i2c *i2c = platform_get_drvdata(dev);
+	clk_disable(i2c->clk);
+	return 0;
+}
+
+static int i2c_pxa_resume_early(struct platform_device *dev)
+{
+	struct pxa_i2c *i2c = platform_get_drvdata(dev);
+
+	clk_enable(i2c->clk);
+	i2c_pxa_reset(i2c);
+
+	return 0;
+}
+#else
+#define i2c_pxa_suspend_late NULL
+#define i2c_pxa_resume_early NULL
+#endif
+
 static struct platform_driver i2c_pxa_driver = {
 	.probe		= i2c_pxa_probe,
 	.remove		= __exit_p(i2c_pxa_remove),
+	.suspend_late	= i2c_pxa_suspend_late,
+	.resume_early	= i2c_pxa_resume_early,
 	.driver		= {
 		.name	= "pxa2xx-i2c",
 		.owner	= THIS_MODULE,
diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c
index 840e634fa31..640cbb23732 100644
--- a/drivers/i2c/busses/i2c-sh_mobile.c
+++ b/drivers/i2c/busses/i2c-sh_mobile.c
@@ -31,13 +31,84 @@
 #include <linux/clk.h>
 #include <linux/io.h>
 
+/* Transmit operation:                                                      */
+/*                                                                          */
+/* 0 byte transmit                                                          */
+/* BUS:     S     A8     ACK   P                                            */
+/* IRQ:       DTE   WAIT                                                    */
+/* ICIC:                                                                    */
+/* ICCR: 0x94 0x90                                                          */
+/* ICDR:      A8                                                            */
+/*                                                                          */
+/* 1 byte transmit                                                          */
+/* BUS:     S     A8     ACK   D8(1)   ACK   P                              */
+/* IRQ:       DTE   WAIT         WAIT                                       */
+/* ICIC:      -DTE                                                          */
+/* ICCR: 0x94       0x90                                                    */
+/* ICDR:      A8    D8(1)                                                   */
+/*                                                                          */
+/* 2 byte transmit                                                          */
+/* BUS:     S     A8     ACK   D8(1)   ACK   D8(2)   ACK   P                */
+/* IRQ:       DTE   WAIT         WAIT          WAIT                         */
+/* ICIC:      -DTE                                                          */
+/* ICCR: 0x94                    0x90                                       */
+/* ICDR:      A8    D8(1)        D8(2)                                      */
+/*                                                                          */
+/* 3 bytes or more, +---------+ gets repeated                               */
+/*                                                                          */
+/*                                                                          */
+/* Receive operation:                                                       */
+/*                                                                          */
+/* 0 byte receive - not supported since slave may hold SDA low              */
+/*                                                                          */
+/* 1 byte receive       [TX] | [RX]                                         */
+/* BUS:     S     A8     ACK | D8(1)   ACK   P                              */
+/* IRQ:       DTE   WAIT     |   WAIT     DTE                               */
+/* ICIC:      -DTE           |   +DTE                                       */
+/* ICCR: 0x94       0x81     |   0xc0                                       */
+/* ICDR:      A8             |            D8(1)                             */
+/*                                                                          */
+/* 2 byte receive        [TX]| [RX]                                         */
+/* BUS:     S     A8     ACK | D8(1)   ACK   D8(2)   ACK   P                */
+/* IRQ:       DTE   WAIT     |   WAIT          WAIT     DTE                 */
+/* ICIC:      -DTE           |                 +DTE                         */
+/* ICCR: 0x94       0x81     |                 0xc0                         */
+/* ICDR:      A8             |                 D8(1)    D8(2)               */
+/*                                                                          */
+/* 3 byte receive       [TX] | [RX]                                         */
+/* BUS:     S     A8     ACK | D8(1)   ACK   D8(2)   ACK   D8(3)   ACK    P */
+/* IRQ:       DTE   WAIT     |   WAIT          WAIT         WAIT      DTE   */
+/* ICIC:      -DTE           |                              +DTE            */
+/* ICCR: 0x94       0x81     |                              0xc0            */
+/* ICDR:      A8             |                 D8(1)        D8(2)     D8(3) */
+/*                                                                          */
+/* 4 bytes or more, this part is repeated    +---------+                    */
+/*                                                                          */
+/*                                                                          */
+/* Interrupt order and BUSY flag                                            */
+/*     ___                                                 _                */
+/* SDA ___\___XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXAAAAAAAAA___/                 */
+/* SCL      \_/1\_/2\_/3\_/4\_/5\_/6\_/7\_/8\___/9\_____/                   */
+/*                                                                          */
+/*        S   D7  D6  D5  D4  D3  D2  D1  D0              P                 */
+/*                                           ___                            */
+/* WAIT IRQ ________________________________/   \___________                */
+/* TACK IRQ ____________________________________/   \_______                */
+/* DTE  IRQ __________________________________________/   \_                */
+/* AL   IRQ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                */
+/*         _______________________________________________                  */
+/* BUSY __/                                               \_                */
+/*                                                                          */
+
 enum sh_mobile_i2c_op {
 	OP_START = 0,
-	OP_TX_ONLY,
+	OP_TX_FIRST,
+	OP_TX,
 	OP_TX_STOP,
 	OP_TX_TO_RX,
-	OP_RX_ONLY,
+	OP_RX,
 	OP_RX_STOP,
+	OP_RX_STOP_DATA,
 };
 
 struct sh_mobile_i2c_data {
@@ -127,25 +198,34 @@ static unsigned char i2c_op(struct sh_mobile_i2c_data *pd,
 	spin_lock_irqsave(&pd->lock, flags);
 
 	switch (op) {
-	case OP_START:
+	case OP_START: /* issue start and trigger DTE interrupt */
 		iowrite8(0x94, ICCR(pd));
 		break;
-	case OP_TX_ONLY:
+	case OP_TX_FIRST: /* disable DTE interrupt and write data */
+		iowrite8(ICIC_WAITE | ICIC_ALE | ICIC_TACKE, ICIC(pd));
 		iowrite8(data, ICDR(pd));
 		break;
-	case OP_TX_STOP:
+	case OP_TX: /* write data */
 		iowrite8(data, ICDR(pd));
-		iowrite8(0x90, ICCR(pd));
-		iowrite8(ICIC_ALE | ICIC_TACKE, ICIC(pd));
 		break;
-	case OP_TX_TO_RX:
+	case OP_TX_STOP: /* write data and issue a stop afterwards */
 		iowrite8(data, ICDR(pd));
+		iowrite8(0x90, ICCR(pd));
+		break;
+	case OP_TX_TO_RX: /* select read mode */
 		iowrite8(0x81, ICCR(pd));
 		break;
-	case OP_RX_ONLY:
+	case OP_RX: /* just read data */
 		ret = ioread8(ICDR(pd));
 		break;
-	case OP_RX_STOP:
+	case OP_RX_STOP: /* enable DTE interrupt, issue stop */
+		iowrite8(ICIC_DTEE | ICIC_WAITE | ICIC_ALE | ICIC_TACKE,
+			 ICIC(pd));
+		iowrite8(0xc0, ICCR(pd));
+		break;
+	case OP_RX_STOP_DATA: /* enable DTE interrupt, read data, issue stop */
+		iowrite8(ICIC_DTEE | ICIC_WAITE | ICIC_ALE | ICIC_TACKE,
+			 ICIC(pd));
 		ret = ioread8(ICDR(pd));
 		iowrite8(0xc0, ICCR(pd));
 		break;
@@ -157,58 +237,120 @@ static unsigned char i2c_op(struct sh_mobile_i2c_data *pd,
 	return ret;
 }
 
+static int sh_mobile_i2c_is_first_byte(struct sh_mobile_i2c_data *pd)
+{
+	if (pd->pos == -1)
+		return 1;
+
+	return 0;
+}
+
+static int sh_mobile_i2c_is_last_byte(struct sh_mobile_i2c_data *pd)
+{
+	if (pd->pos == (pd->msg->len - 1))
+		return 1;
+
+	return 0;
+}
+
+static void sh_mobile_i2c_get_data(struct sh_mobile_i2c_data *pd,
+				   unsigned char *buf)
+{
+	switch (pd->pos) {
+	case -1:
+		*buf = (pd->msg->addr & 0x7f) << 1;
+		*buf |= (pd->msg->flags & I2C_M_RD) ? 1 : 0;
+		break;
+	default:
+		*buf = pd->msg->buf[pd->pos];
+	}
+}
+
+static int sh_mobile_i2c_isr_tx(struct sh_mobile_i2c_data *pd)
+{
+	unsigned char data;
+
+	if (pd->pos == pd->msg->len)
+		return 1;
+
+	sh_mobile_i2c_get_data(pd, &data);
+
+	if (sh_mobile_i2c_is_last_byte(pd))
+		i2c_op(pd, OP_TX_STOP, data);
+	else if (sh_mobile_i2c_is_first_byte(pd))
+		i2c_op(pd, OP_TX_FIRST, data);
+	else
+		i2c_op(pd, OP_TX, data);
+
+	pd->pos++;
+	return 0;
+}
+
+static int sh_mobile_i2c_isr_rx(struct sh_mobile_i2c_data *pd)
+{
+	unsigned char data;
+	int real_pos;
+
+	do {
+		if (pd->pos <= -1) {
+			sh_mobile_i2c_get_data(pd, &data);
+
+			if (sh_mobile_i2c_is_first_byte(pd))
+				i2c_op(pd, OP_TX_FIRST, data);
+			else
+				i2c_op(pd, OP_TX, data);
+			break;
+		}
+
+		if (pd->pos == 0) {
+			i2c_op(pd, OP_TX_TO_RX, 0);
+			break;
+		}
+
+		real_pos = pd->pos - 2;
+
+		if (pd->pos == pd->msg->len) {
+			if (real_pos < 0) {
+				i2c_op(pd, OP_RX_STOP, 0);
+				break;
+			}
+			data = i2c_op(pd, OP_RX_STOP_DATA, 0);
+		} else
+			data = i2c_op(pd, OP_RX, 0);
+
+		pd->msg->buf[real_pos] = data;
+	} while (0);
+
+	pd->pos++;
+	return pd->pos == (pd->msg->len + 2);
+}
+
 static irqreturn_t sh_mobile_i2c_isr(int irq, void *dev_id)
 {
 	struct platform_device *dev = dev_id;
 	struct sh_mobile_i2c_data *pd = platform_get_drvdata(dev);
-	struct i2c_msg *msg = pd->msg;
-	unsigned char data, sr;
-	int wakeup = 0;
+	unsigned char sr;
+	int wakeup;
 
 	sr = ioread8(ICSR(pd));
-	pd->sr |= sr;
+	pd->sr |= sr; /* remember state */
 
 	dev_dbg(pd->dev, "i2c_isr 0x%02x 0x%02x %s %d %d!\n", sr, pd->sr,
-	       (msg->flags & I2C_M_RD) ? "read" : "write",
-	       pd->pos, msg->len);
+	       (pd->msg->flags & I2C_M_RD) ? "read" : "write",
+	       pd->pos, pd->msg->len);
 
 	if (sr & (ICSR_AL | ICSR_TACK)) {
-		iowrite8(0, ICIC(pd)); /* disable interrupts */
-		wakeup = 1;
-		goto do_wakeup;
-	}
+		/* don't interrupt transaction - continue to issue stop */
+		iowrite8(sr & ~(ICSR_AL | ICSR_TACK), ICSR(pd));
+		wakeup = 0;
+	} else if (pd->msg->flags & I2C_M_RD)
+		wakeup = sh_mobile_i2c_isr_rx(pd);
+	else
+		wakeup = sh_mobile_i2c_isr_tx(pd);
 
-	if (pd->pos == msg->len) {
-		i2c_op(pd, OP_RX_ONLY, 0);
-		wakeup = 1;
-		goto do_wakeup;
-	}
+	if (sr & ICSR_WAIT) /* TODO: add delay here to support slow acks */
+		iowrite8(sr & ~ICSR_WAIT, ICSR(pd));
 
-	if (pd->pos == -1) {
-		data = (msg->addr & 0x7f) << 1;
-		data |= (msg->flags & I2C_M_RD) ? 1 : 0;
-	} else
-		data = msg->buf[pd->pos];
-
-	if ((pd->pos == -1) || !(msg->flags & I2C_M_RD)) {
-		if (msg->flags & I2C_M_RD)
-			i2c_op(pd, OP_TX_TO_RX, data);
-		else if (pd->pos == (msg->len - 1)) {
-			i2c_op(pd, OP_TX_STOP, data);
-			wakeup = 1;
-		} else
-			i2c_op(pd, OP_TX_ONLY, data);
-	} else {
-		if (pd->pos == (msg->len - 1))
-			data = i2c_op(pd, OP_RX_STOP, 0);
-		else
-			data = i2c_op(pd, OP_RX_ONLY, 0);
-
-		msg->buf[pd->pos] = data;
-	}
-	pd->pos++;
-
- do_wakeup:
 	if (wakeup) {
 		pd->sr |= SW_DONE;
 		wake_up(&pd->wait);
@@ -219,6 +361,11 @@ static irqreturn_t sh_mobile_i2c_isr(int irq, void *dev_id)
 
 static int start_ch(struct sh_mobile_i2c_data *pd, struct i2c_msg *usr_msg)
 {
+	if (usr_msg->len == 0 && (usr_msg->flags & I2C_M_RD)) {
+		dev_err(pd->dev, "Unsupported zero length i2c read\n");
+		return -EIO;
+	}
+
 	/* Initialize channel registers */
 	iowrite8(ioread8(ICCR(pd)) & ~ICCR_ICE, ICCR(pd));
 
@@ -233,9 +380,8 @@ static int start_ch(struct sh_mobile_i2c_data *pd, struct i2c_msg *usr_msg)
 	pd->pos = -1;
 	pd->sr = 0;
 
-	/* Enable all interrupts except wait */
-	iowrite8(ioread8(ICIC(pd)) | ICIC_ALE | ICIC_TACKE | ICIC_DTEE,
-		 ICIC(pd));
+	/* Enable all interrupts to begin with */
+	iowrite8(ICIC_WAITE | ICIC_ALE | ICIC_TACKE | ICIC_DTEE, ICIC(pd));
 	return 0;
 }
 
@@ -268,25 +414,18 @@ static int sh_mobile_i2c_xfer(struct i2c_adapter *adapter,
 		if (!k)
 			dev_err(pd->dev, "Transfer request timed out\n");
 
-		retry_count = 10;
+		retry_count = 1000;
 again:
 		val = ioread8(ICSR(pd));
 
 		dev_dbg(pd->dev, "val 0x%02x pd->sr 0x%02x\n", val, pd->sr);
 
-		if ((val | pd->sr) & (ICSR_TACK | ICSR_AL)) {
-			err = -EIO;
-			break;
-		}
-
 		/* the interrupt handler may wake us up before the
 		 * transfer is finished, so poll the hardware
 		 * until we're done.
 		 */
-
-		if (!(!(val & ICSR_BUSY) && (val & ICSR_SCLM) &&
-		      (val & ICSR_SDAM))) {
-			msleep(1);
+		if (val & ICSR_BUSY) {
+			udelay(10);
 			if (retry_count--)
 				goto again;
 
@@ -294,6 +433,12 @@ again:
 			dev_err(pd->dev, "Polling timed out\n");
 			break;
 		}
+
+		/* handle missing acknowledge and arbitration lost */
+		if ((val | pd->sr) & (ICSR_TACK | ICSR_AL)) {
+			err = -EIO;
+			break;
+		}
 	}
 
 	deactivate_ch(pd);
diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c
index 862eb352a2d..73dc52e114e 100644
--- a/drivers/i2c/busses/i2c-viapro.c
+++ b/drivers/i2c/busses/i2c-viapro.c
@@ -36,6 +36,7 @@
    VT8237S            0x3372             yes
    VT8251             0x3287             yes
    CX700              0x8324             yes
+   VX800/VX820        0x8353             yes
 
    Note: we assume there can only be one device, with one SMBus interface.
 */
@@ -82,6 +83,7 @@ static unsigned short SMBHSTCFG = 0xD2;
 #define VT596_BYTE		0x04
 #define VT596_BYTE_DATA		0x08
 #define VT596_WORD_DATA		0x0C
+#define VT596_PROC_CALL		0x10
 #define VT596_BLOCK_DATA	0x14
 #define VT596_I2C_BLOCK_DATA	0x34
 
@@ -232,6 +234,12 @@ static s32 vt596_access(struct i2c_adapter *adap, u16 addr,
 		}
 		size = VT596_WORD_DATA;
 		break;
+	case I2C_SMBUS_PROC_CALL:
+		outb_p(command, SMBHSTCMD);
+		outb_p(data->word & 0xff, SMBHSTDAT0);
+		outb_p((data->word & 0xff00) >> 8, SMBHSTDAT1);
+		size = VT596_PROC_CALL;
+		break;
 	case I2C_SMBUS_I2C_BLOCK_DATA:
 		if (!(vt596_features & FEATURE_I2CBLOCK))
 			goto exit_unsupported;
@@ -262,6 +270,9 @@ static s32 vt596_access(struct i2c_adapter *adap, u16 addr,
 	if (status)
 		return status;
 
+	if (size == VT596_PROC_CALL)
+		read_write = I2C_SMBUS_READ;
+
 	if ((read_write == I2C_SMBUS_WRITE) || (size == VT596_QUICK))
 		return 0;
 
@@ -271,6 +282,7 @@ static s32 vt596_access(struct i2c_adapter *adap, u16 addr,
 		data->byte = inb_p(SMBHSTDAT0);
 		break;
 	case VT596_WORD_DATA:
+	case VT596_PROC_CALL:
 		data->word = inb_p(SMBHSTDAT0) + (inb_p(SMBHSTDAT1) << 8);
 		break;
 	case VT596_I2C_BLOCK_DATA:
@@ -295,7 +307,7 @@ static u32 vt596_func(struct i2c_adapter *adapter)
 {
 	u32 func = I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
 	    I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
-	    I2C_FUNC_SMBUS_BLOCK_DATA;
+	    I2C_SMBUS_PROC_CALL | I2C_FUNC_SMBUS_BLOCK_DATA;
 
 	if (vt596_features & FEATURE_I2CBLOCK)
 		func |= I2C_FUNC_SMBUS_I2C_BLOCK;
@@ -396,6 +408,7 @@ found:
 
 	switch (pdev->device) {
 	case PCI_DEVICE_ID_VIA_CX700:
+	case PCI_DEVICE_ID_VIA_VX800:
 	case PCI_DEVICE_ID_VIA_8251:
 	case PCI_DEVICE_ID_VIA_8237:
 	case PCI_DEVICE_ID_VIA_8237A:
@@ -459,6 +472,8 @@ static struct pci_device_id vt596_ids[] = {
 	  .driver_data = SMBBA3 },
 	{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_CX700),
 	  .driver_data = SMBBA3 },
+	{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VX800),
+	  .driver_data = SMBBA3 },
 	{ 0, }
 };
 
diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig
index a95cb9465d6..17356827b93 100644
--- a/drivers/i2c/chips/Kconfig
+++ b/drivers/i2c/chips/Kconfig
@@ -172,4 +172,15 @@ config MENELAUS
 	  and other features that are often used in portable devices like
 	  cell phones and PDAs.
 
+config MCU_MPC8349EMITX
+	tristate "MPC8349E-mITX MCU driver"
+	depends on I2C && PPC_83xx
+	select GENERIC_GPIO
+	select ARCH_REQUIRE_GPIOLIB
+	help
+	  Say Y here to enable soft power-off functionality on the Freescale
+	  boards with the MPC8349E-mITX-compatible MCU chips. This driver will
+	  also register MCU GPIOs with the generic GPIO API, so you'll able
+	  to use MCU pins as GPIOs.
+
 endmenu
diff --git a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile
index 39e3e69ed12..ca520fa143d 100644
--- a/drivers/i2c/chips/Makefile
+++ b/drivers/i2c/chips/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_ISP1301_OMAP)	+= isp1301_omap.o
 obj-$(CONFIG_TPS65010)		+= tps65010.o
 obj-$(CONFIG_MENELAUS)		+= menelaus.o
 obj-$(CONFIG_SENSORS_TSL2550)	+= tsl2550.o
+obj-$(CONFIG_MCU_MPC8349EMITX)	+= mcu_mpc8349emitx.o
 
 ifeq ($(CONFIG_I2C_DEBUG_CHIP),y)
 EXTRA_CFLAGS += -DDEBUG
diff --git a/drivers/i2c/chips/isp1301_omap.c b/drivers/i2c/chips/isp1301_omap.c
index 4655b794ebe..28902ebd553 100644
--- a/drivers/i2c/chips/isp1301_omap.c
+++ b/drivers/i2c/chips/isp1301_omap.c
@@ -49,10 +49,9 @@ MODULE_LICENSE("GPL");
 
 struct isp1301 {
 	struct otg_transceiver	otg;
-	struct i2c_client	client;
+	struct i2c_client	*client;
 	void			(*i2c_release)(struct device *dev);
 
-	int			irq;
 	int			irq_type;
 
 	u32			last_otg_ctrl;
@@ -138,14 +137,6 @@ static inline void notresponding(struct isp1301 *isp)
 
 /*-------------------------------------------------------------------------*/
 
-/* only two addresses possible */
-#define	ISP_BASE		0x2c
-static unsigned short normal_i2c[] = {
-	ISP_BASE, ISP_BASE + 1,
-	I2C_CLIENT_END };
-
-I2C_CLIENT_INSMOD;
-
 static struct i2c_driver isp1301_driver;
 
 /* smbus apis are used for portability */
@@ -153,25 +144,25 @@ static struct i2c_driver isp1301_driver;
 static inline u8
 isp1301_get_u8(struct isp1301 *isp, u8 reg)
 {
-	return i2c_smbus_read_byte_data(&isp->client, reg + 0);
+	return i2c_smbus_read_byte_data(isp->client, reg + 0);
 }
 
 static inline int
 isp1301_get_u16(struct isp1301 *isp, u8 reg)
 {
-	return i2c_smbus_read_word_data(&isp->client, reg);
+	return i2c_smbus_read_word_data(isp->client, reg);
 }
 
 static inline int
 isp1301_set_bits(struct isp1301 *isp, u8 reg, u8 bits)
 {
-	return i2c_smbus_write_byte_data(&isp->client, reg + 0, bits);
+	return i2c_smbus_write_byte_data(isp->client, reg + 0, bits);
 }
 
 static inline int
 isp1301_clear_bits(struct isp1301 *isp, u8 reg, u8 bits)
 {
-	return i2c_smbus_write_byte_data(&isp->client, reg + 1, bits);
+	return i2c_smbus_write_byte_data(isp->client, reg + 1, bits);
 }
 
 /*-------------------------------------------------------------------------*/
@@ -349,10 +340,10 @@ isp1301_defer_work(struct isp1301 *isp, int work)
 	int status;
 
 	if (isp && !test_and_set_bit(work, &isp->todo)) {
-		(void) get_device(&isp->client.dev);
+		(void) get_device(&isp->client->dev);
 		status = schedule_work(&isp->work);
 		if (!status && !isp->working)
-			dev_vdbg(&isp->client.dev,
+			dev_vdbg(&isp->client->dev,
 				"work item %d may be lost\n", work);
 	}
 }
@@ -1135,7 +1126,7 @@ isp1301_work(struct work_struct *work)
 		/* transfer state from otg engine to isp1301 */
 		if (test_and_clear_bit(WORK_UPDATE_ISP, &isp->todo)) {
 			otg_update_isp(isp);
-			put_device(&isp->client.dev);
+			put_device(&isp->client->dev);
 		}
 #endif
 		/* transfer state from isp1301 to otg engine */
@@ -1143,7 +1134,7 @@ isp1301_work(struct work_struct *work)
 			u8		stat = isp1301_clear_latch(isp);
 
 			isp_update_otg(isp, stat);
-			put_device(&isp->client.dev);
+			put_device(&isp->client->dev);
 		}
 
 		if (test_and_clear_bit(WORK_HOST_RESUME, &isp->todo)) {
@@ -1178,7 +1169,7 @@ isp1301_work(struct work_struct *work)
 			}
 			host_resume(isp);
 			// mdelay(10);
-			put_device(&isp->client.dev);
+			put_device(&isp->client->dev);
 		}
 
 		if (test_and_clear_bit(WORK_TIMER, &isp->todo)) {
@@ -1187,15 +1178,15 @@ isp1301_work(struct work_struct *work)
 			if (!stop)
 				mod_timer(&isp->timer, jiffies + TIMER_JIFFIES);
 #endif
-			put_device(&isp->client.dev);
+			put_device(&isp->client->dev);
 		}
 
 		if (isp->todo)
-			dev_vdbg(&isp->client.dev,
+			dev_vdbg(&isp->client->dev,
 				"work done, todo = 0x%lx\n",
 				isp->todo);
 		if (stop) {
-			dev_dbg(&isp->client.dev, "stop\n");
+			dev_dbg(&isp->client->dev, "stop\n");
 			break;
 		}
 	} while (isp->todo);
@@ -1219,7 +1210,7 @@ static void isp1301_release(struct device *dev)
 {
 	struct isp1301	*isp;
 
-	isp = container_of(dev, struct isp1301, client.dev);
+	isp = dev_get_drvdata(dev);
 
 	/* ugly -- i2c hijacks our memory hook to wait_for_completion() */
 	if (isp->i2c_release)
@@ -1229,15 +1220,15 @@ static void isp1301_release(struct device *dev)
 
 static struct isp1301 *the_transceiver;
 
-static int isp1301_detach_client(struct i2c_client *i2c)
+static int __exit isp1301_remove(struct i2c_client *i2c)
 {
 	struct isp1301	*isp;
 
-	isp = container_of(i2c, struct isp1301, client);
+	isp = i2c_get_clientdata(i2c);
 
 	isp1301_clear_bits(isp, ISP1301_INTERRUPT_FALLING, ~0);
 	isp1301_clear_bits(isp, ISP1301_INTERRUPT_RISING, ~0);
-	free_irq(isp->irq, isp);
+	free_irq(i2c->irq, isp);
 #ifdef	CONFIG_USB_OTG
 	otg_unbind(isp);
 #endif
@@ -1252,7 +1243,7 @@ static int isp1301_detach_client(struct i2c_client *i2c)
 	put_device(&i2c->dev);
 	the_transceiver = 0;
 
-	return i2c_detach_client(i2c);
+	return 0;
 }
 
 /*-------------------------------------------------------------------------*/
@@ -1285,7 +1276,7 @@ static int isp1301_otg_enable(struct isp1301 *isp)
 	isp1301_set_bits(isp, ISP1301_INTERRUPT_FALLING,
 		INTR_VBUS_VLD | INTR_SESS_VLD | INTR_ID_GND);
 
-	dev_info(&isp->client.dev, "ready for dual-role USB ...\n");
+	dev_info(&isp->client->dev, "ready for dual-role USB ...\n");
 
 	return 0;
 }
@@ -1310,7 +1301,7 @@ isp1301_set_host(struct otg_transceiver *otg, struct usb_bus *host)
 
 #ifdef	CONFIG_USB_OTG
 	isp->otg.host = host;
-	dev_dbg(&isp->client.dev, "registered host\n");
+	dev_dbg(&isp->client->dev, "registered host\n");
 	host_suspend(isp);
 	if (isp->otg.gadget)
 		return isp1301_otg_enable(isp);
@@ -1325,7 +1316,7 @@ isp1301_set_host(struct otg_transceiver *otg, struct usb_bus *host)
 	if (machine_is_omap_h2())
 		isp1301_set_bits(isp, ISP1301_MODE_CONTROL_1, MC1_DAT_SE0);
 
-	dev_info(&isp->client.dev, "A-Host sessions ok\n");
+	dev_info(&isp->client->dev, "A-Host sessions ok\n");
 	isp1301_set_bits(isp, ISP1301_INTERRUPT_RISING,
 		INTR_ID_GND);
 	isp1301_set_bits(isp, ISP1301_INTERRUPT_FALLING,
@@ -1343,7 +1334,7 @@ isp1301_set_host(struct otg_transceiver *otg, struct usb_bus *host)
 	return 0;
 
 #else
-	dev_dbg(&isp->client.dev, "host sessions not allowed\n");
+	dev_dbg(&isp->client->dev, "host sessions not allowed\n");
 	return -EINVAL;
 #endif
 
@@ -1370,7 +1361,7 @@ isp1301_set_peripheral(struct otg_transceiver *otg, struct usb_gadget *gadget)
 
 #ifdef	CONFIG_USB_OTG
 	isp->otg.gadget = gadget;
-	dev_dbg(&isp->client.dev, "registered gadget\n");
+	dev_dbg(&isp->client->dev, "registered gadget\n");
 	/* gadget driver may be suspended until vbus_connect () */
 	if (isp->otg.host)
 		return isp1301_otg_enable(isp);
@@ -1395,7 +1386,7 @@ isp1301_set_peripheral(struct otg_transceiver *otg, struct usb_gadget *gadget)
 		INTR_SESS_VLD);
 	isp1301_set_bits(isp, ISP1301_INTERRUPT_FALLING,
 		INTR_VBUS_VLD);
-	dev_info(&isp->client.dev, "B-Peripheral sessions ok\n");
+	dev_info(&isp->client->dev, "B-Peripheral sessions ok\n");
 	dump_regs(isp, __func__);
 
 	/* If this has a Mini-AB connector, this mode is highly
@@ -1408,7 +1399,7 @@ isp1301_set_peripheral(struct otg_transceiver *otg, struct usb_gadget *gadget)
 	return 0;
 
 #else
-	dev_dbg(&isp->client.dev, "peripheral sessions not allowed\n");
+	dev_dbg(&isp->client->dev, "peripheral sessions not allowed\n");
 	return -EINVAL;
 #endif
 }
@@ -1508,12 +1499,10 @@ isp1301_start_hnp(struct otg_transceiver *dev)
 
 /*-------------------------------------------------------------------------*/
 
-/* no error returns, they'd just make bus scanning stop */
-static int isp1301_probe(struct i2c_adapter *bus, int address, int kind)
+static int __init isp1301_probe(struct i2c_client *i2c)
 {
 	int			status;
 	struct isp1301		*isp;
-	struct i2c_client	*i2c;
 
 	if (the_transceiver)
 		return 0;
@@ -1527,37 +1516,19 @@ static int isp1301_probe(struct i2c_adapter *bus, int address, int kind)
 	isp->timer.function = isp1301_timer;
 	isp->timer.data = (unsigned long) isp;
 
-	isp->irq = -1;
-	isp->client.addr = address;
-	i2c_set_clientdata(&isp->client, isp);
-	isp->client.adapter = bus;
-	isp->client.driver = &isp1301_driver;
-	strlcpy(isp->client.name, DRIVER_NAME, I2C_NAME_SIZE);
-	i2c = &isp->client;
-
-	/* if this is a true probe, verify the chip ... */
-	if (kind < 0) {
-		status = isp1301_get_u16(isp, ISP1301_VENDOR_ID);
-		if (status != I2C_VENDOR_ID_PHILIPS) {
-			dev_dbg(&bus->dev, "addr %d not philips id: %d\n",
-				address, status);
-			goto fail1;
-		}
-		status = isp1301_get_u16(isp, ISP1301_PRODUCT_ID);
-		if (status != I2C_PRODUCT_ID_PHILIPS_1301) {
-			dev_dbg(&bus->dev, "%d not isp1301, %d\n",
-				address, status);
-			goto fail1;
-		}
-	}
+	i2c_set_clientdata(i2c, isp);
+	isp->client = i2c;
 
-	status = i2c_attach_client(i2c);
-	if (status < 0) {
-		dev_dbg(&bus->dev, "can't attach %s to device %d, err %d\n",
-				DRIVER_NAME, address, status);
-fail1:
-		kfree(isp);
-		return 0;
+	/* verify the chip (shouldn't be necesary) */
+	status = isp1301_get_u16(isp, ISP1301_VENDOR_ID);
+	if (status != I2C_VENDOR_ID_PHILIPS) {
+		dev_dbg(&i2c->dev, "not philips id: %d\n", status);
+		goto fail;
+	}
+	status = isp1301_get_u16(isp, ISP1301_PRODUCT_ID);
+	if (status != I2C_PRODUCT_ID_PHILIPS_1301) {
+		dev_dbg(&i2c->dev, "not isp1301, %d\n", status);
+		goto fail;
 	}
 	isp->i2c_release = i2c->dev.release;
 	i2c->dev.release = isp1301_release;
@@ -1586,7 +1557,7 @@ fail1:
 	status = otg_bind(isp);
 	if (status < 0) {
 		dev_dbg(&i2c->dev, "can't bind OTG\n");
-		goto fail2;
+		goto fail;
 	}
 #endif
 
@@ -1599,26 +1570,21 @@ fail1:
 
 		/* IRQ wired at M14 */
 		omap_cfg_reg(M14_1510_GPIO2);
-		isp->irq = OMAP_GPIO_IRQ(2);
 		if (gpio_request(2, "isp1301") == 0)
 			gpio_direction_input(2);
 		isp->irq_type = IRQF_TRIGGER_FALLING;
 	}
 
 	isp->irq_type |= IRQF_SAMPLE_RANDOM;
-	status = request_irq(isp->irq, isp1301_irq,
+	status = request_irq(i2c->irq, isp1301_irq,
 			isp->irq_type, DRIVER_NAME, isp);
 	if (status < 0) {
 		dev_dbg(&i2c->dev, "can't get IRQ %d, err %d\n",
-				isp->irq, status);
-#ifdef	CONFIG_USB_OTG
-fail2:
-#endif
-		i2c_detach_client(i2c);
-		goto fail1;
+				i2c->irq, status);
+		goto fail;
 	}
 
-	isp->otg.dev = &isp->client.dev;
+	isp->otg.dev = &i2c->dev;
 	isp->otg.label = DRIVER_NAME;
 
 	isp->otg.set_host = isp1301_set_host,
@@ -1649,22 +1615,25 @@ fail2:
 			status);
 
 	return 0;
-}
 
-static int isp1301_scan_bus(struct i2c_adapter *bus)
-{
-	if (!i2c_check_functionality(bus, I2C_FUNC_SMBUS_BYTE_DATA
-			| I2C_FUNC_SMBUS_READ_WORD_DATA))
-		return -EINVAL;
-	return i2c_probe(bus, &addr_data, isp1301_probe);
+fail:
+	kfree(isp);
+	return -ENODEV;
 }
 
+static const struct i2c_device_id isp1301_id[] = {
+	{ "isp1301_omap", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, isp1301_id);
+
 static struct i2c_driver isp1301_driver = {
 	.driver = {
 		.name	= "isp1301_omap",
 	},
-	.attach_adapter	= isp1301_scan_bus,
-	.detach_client	= isp1301_detach_client,
+	.probe		= isp1301_probe,
+	.remove		= __exit_p(isp1301_remove),
+	.id_table	= isp1301_id,
 };
 
 /*-------------------------------------------------------------------------*/
diff --git a/drivers/i2c/chips/mcu_mpc8349emitx.c b/drivers/i2c/chips/mcu_mpc8349emitx.c
new file mode 100644
index 00000000000..82a9bcb858b
--- /dev/null
+++ b/drivers/i2c/chips/mcu_mpc8349emitx.c
@@ -0,0 +1,209 @@
+/*
+ * Power Management and GPIO expander driver for MPC8349E-mITX-compatible MCU
+ *
+ * Copyright (c) 2008  MontaVista Software, Inc.
+ *
+ * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <asm/prom.h>
+#include <asm/machdep.h>
+
+/*
+ * I don't have specifications for the MCU firmware, I found this register
+ * and bits positions by the trial&error method.
+ */
+#define MCU_REG_CTRL	0x20
+#define MCU_CTRL_POFF	0x40
+
+#define MCU_NUM_GPIO	2
+
+struct mcu {
+	struct mutex lock;
+	struct device_node *np;
+	struct i2c_client *client;
+	struct of_gpio_chip of_gc;
+	u8 reg_ctrl;
+};
+
+static struct mcu *glob_mcu;
+
+static void mcu_power_off(void)
+{
+	struct mcu *mcu = glob_mcu;
+
+	pr_info("Sending power-off request to the MCU...\n");
+	mutex_lock(&mcu->lock);
+	i2c_smbus_write_byte_data(glob_mcu->client, MCU_REG_CTRL,
+				  mcu->reg_ctrl | MCU_CTRL_POFF);
+	mutex_unlock(&mcu->lock);
+}
+
+static void mcu_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+	struct of_gpio_chip *of_gc = to_of_gpio_chip(gc);
+	struct mcu *mcu = container_of(of_gc, struct mcu, of_gc);
+	u8 bit = 1 << (4 + gpio);
+
+	mutex_lock(&mcu->lock);
+	if (val)
+		mcu->reg_ctrl &= ~bit;
+	else
+		mcu->reg_ctrl |= bit;
+
+	i2c_smbus_write_byte_data(mcu->client, MCU_REG_CTRL, mcu->reg_ctrl);
+	mutex_unlock(&mcu->lock);
+}
+
+static int mcu_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+	mcu_gpio_set(gc, gpio, val);
+	return 0;
+}
+
+static int mcu_gpiochip_add(struct mcu *mcu)
+{
+	struct device_node *np;
+	struct of_gpio_chip *of_gc = &mcu->of_gc;
+	struct gpio_chip *gc = &of_gc->gc;
+	int ret;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,mcu-mpc8349emitx");
+	if (!np)
+		return -ENODEV;
+
+	gc->owner = THIS_MODULE;
+	gc->label = np->full_name;
+	gc->can_sleep = 1;
+	gc->ngpio = MCU_NUM_GPIO;
+	gc->base = -1;
+	gc->set = mcu_gpio_set;
+	gc->direction_output = mcu_gpio_dir_out;
+	of_gc->gpio_cells = 2;
+	of_gc->xlate = of_gpio_simple_xlate;
+
+	np->data = of_gc;
+	mcu->np = np;
+
+	/*
+	 * We don't want to lose the node, its ->data and ->full_name...
+	 * So, if succeeded, we don't put the node here.
+	 */
+	ret = gpiochip_add(gc);
+	if (ret)
+		of_node_put(np);
+	return ret;
+}
+
+static int mcu_gpiochip_remove(struct mcu *mcu)
+{
+	int ret;
+
+	ret = gpiochip_remove(&mcu->of_gc.gc);
+	if (ret)
+		return ret;
+	of_node_put(mcu->np);
+
+	return 0;
+}
+
+static int __devinit mcu_probe(struct i2c_client *client,
+			       const struct i2c_device_id *id)
+{
+	struct mcu *mcu;
+	int ret;
+
+	mcu = kzalloc(sizeof(*mcu), GFP_KERNEL);
+	if (!mcu)
+		return -ENOMEM;
+
+	mutex_init(&mcu->lock);
+	mcu->client = client;
+	i2c_set_clientdata(client, mcu);
+
+	ret = i2c_smbus_read_byte_data(mcu->client, MCU_REG_CTRL);
+	if (ret < 0)
+		goto err;
+	mcu->reg_ctrl = ret;
+
+	ret = mcu_gpiochip_add(mcu);
+	if (ret)
+		goto err;
+
+	/* XXX: this is potentially racy, but there is no lock for ppc_md */
+	if (!ppc_md.power_off) {
+		glob_mcu = mcu;
+		ppc_md.power_off = mcu_power_off;
+		dev_info(&client->dev, "will provide power-off service\n");
+	}
+
+	return 0;
+err:
+	kfree(mcu);
+	return ret;
+}
+
+static int __devexit mcu_remove(struct i2c_client *client)
+{
+	struct mcu *mcu = i2c_get_clientdata(client);
+	int ret;
+
+	if (glob_mcu == mcu) {
+		ppc_md.power_off = NULL;
+		glob_mcu = NULL;
+	}
+
+	ret = mcu_gpiochip_remove(mcu);
+	if (ret)
+		return ret;
+	i2c_set_clientdata(client, NULL);
+	kfree(mcu);
+	return 0;
+}
+
+static const struct i2c_device_id mcu_ids[] = {
+	{ "mcu-mpc8349emitx", },
+	{},
+};
+MODULE_DEVICE_TABLE(i2c, mcu_ids);
+
+static struct i2c_driver mcu_driver = {
+	.driver = {
+		.name = "mcu-mpc8349emitx",
+		.owner = THIS_MODULE,
+	},
+	.probe = mcu_probe,
+	.remove	= __devexit_p(mcu_remove),
+	.id_table = mcu_ids,
+};
+
+static int __init mcu_init(void)
+{
+	return i2c_add_driver(&mcu_driver);
+}
+module_init(mcu_init);
+
+static void __exit mcu_exit(void)
+{
+	i2c_del_driver(&mcu_driver);
+}
+module_exit(mcu_exit);
+
+MODULE_DESCRIPTION("Power Management and GPIO expander driver for "
+		   "MPC8349E-mITX-compatible MCU");
+MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/chips/tps65010.c b/drivers/i2c/chips/tps65010.c
index cf02e8fceb4..acf8b9d5f57 100644
--- a/drivers/i2c/chips/tps65010.c
+++ b/drivers/i2c/chips/tps65010.c
@@ -456,14 +456,17 @@ static irqreturn_t tps65010_irq(int irq, void *_tps)
 
 /* offsets 0..3 == GPIO1..GPIO4
  * offsets 4..5 == LED1/nPG, LED2 (we set one of the non-BLINK modes)
+ * offset 6 == vibrator motor driver
  */
 static void
 tps65010_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 {
 	if (offset < 4)
 		tps65010_set_gpio_out_value(offset + 1, value);
-	else
+	else if (offset < 6)
 		tps65010_set_led(offset - 3, value ? ON : OFF);
+	else
+		tps65010_set_vib(value);
 }
 
 static int
@@ -477,8 +480,10 @@ tps65010_output(struct gpio_chip *chip, unsigned offset, int value)
 		if (!(tps->outmask & (1 << offset)))
 			return -EINVAL;
 		tps65010_set_gpio_out_value(offset + 1, value);
-	} else
+	} else if (offset < 6)
 		tps65010_set_led(offset - 3, value ? ON : OFF);
+	else
+		tps65010_set_vib(value);
 
 	return 0;
 }
@@ -646,7 +651,7 @@ static int tps65010_probe(struct i2c_client *client,
 		tps->chip.get = tps65010_gpio_get;
 
 		tps->chip.base = board->base;
-		tps->chip.ngpio = 6;
+		tps->chip.ngpio = 7;
 		tps->chip.can_sleep = 1;
 
 		status = gpiochip_add(&tps->chip);
@@ -675,6 +680,7 @@ static const struct i2c_device_id tps65010_id[] = {
 	{ "tps65011", TPS65011 },
 	{ "tps65012", TPS65012 },
 	{ "tps65013", TPS65013 },
+	{ "tps65014", TPS65011 },	/* tps65011 charging at 6.5V max */
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, tps65010_id);
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index b346a687ab5..42e852d79ff 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -437,6 +437,10 @@ static int i2c_register_adapter(struct i2c_adapter *adap)
 {
 	int res = 0, dummy;
 
+	/* Can't register until after driver model init */
+	if (unlikely(WARN_ON(!i2c_bus_type.p)))
+		return -EAGAIN;
+
 	mutex_init(&adap->bus_lock);
 	mutex_init(&adap->clist_lock);
 	INIT_LIST_HEAD(&adap->clients);
@@ -696,6 +700,10 @@ int i2c_register_driver(struct module *owner, struct i2c_driver *driver)
 {
 	int res;
 
+	/* Can't register until after driver model init */
+	if (unlikely(WARN_ON(!i2c_bus_type.p)))
+		return -EAGAIN;
+
 	/* new style driver methods can't mix with legacy ones */
 	if (is_newstyle_driver(driver)) {
 		if (driver->attach_adapter || driver->detach_adapter
@@ -978,7 +986,10 @@ static void __exit i2c_exit(void)
 	bus_unregister(&i2c_bus_type);
 }
 
-subsys_initcall(i2c_init);
+/* We must initialize early, because some subsystems register i2c drivers
+ * in subsys_initcall() code, but are linked (and initialized) before i2c.
+ */
+postcore_initcall(i2c_init);
 module_exit(i2c_exit);
 
 /* ----------------------------------------------------
@@ -1677,6 +1688,28 @@ s32 i2c_smbus_write_word_data(struct i2c_client *client, u8 command, u16 value)
 EXPORT_SYMBOL(i2c_smbus_write_word_data);
 
 /**
+ * i2c_smbus_process_call - SMBus "process call" protocol
+ * @client: Handle to slave device
+ * @command: Byte interpreted by slave
+ * @value: 16-bit "word" being written
+ *
+ * This executes the SMBus "process call" protocol, returning negative errno
+ * else a 16-bit unsigned "word" received from the device.
+ */
+s32 i2c_smbus_process_call(struct i2c_client *client, u8 command, u16 value)
+{
+	union i2c_smbus_data data;
+	int status;
+	data.word = value;
+
+	status = i2c_smbus_xfer(client->adapter, client->addr, client->flags,
+				I2C_SMBUS_WRITE, command,
+				I2C_SMBUS_PROC_CALL, &data);
+	return (status < 0) ? status : data.word;
+}
+EXPORT_SYMBOL(i2c_smbus_process_call);
+
+/**
  * i2c_smbus_read_block_data - SMBus "block read" protocol
  * @client: Handle to slave device
  * @command: Byte interpreted by slave
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index af4491fa7e3..c171988a9f5 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -521,9 +521,9 @@ static int i2cdev_attach_adapter(struct i2c_adapter *adap)
 		return PTR_ERR(i2c_dev);
 
 	/* register this i2c device with the driver core */
-	i2c_dev->dev = device_create_drvdata(i2c_dev_class, &adap->dev,
-					     MKDEV(I2C_MAJOR, adap->nr),
-					     NULL, "i2c-%d", adap->nr);
+	i2c_dev->dev = device_create(i2c_dev_class, &adap->dev,
+				     MKDEV(I2C_MAJOR, adap->nr), NULL,
+				     "i2c-%d", adap->nr);
 	if (IS_ERR(i2c_dev->dev)) {
 		res = PTR_ERR(i2c_dev->dev);
 		goto error;
@@ -583,8 +583,10 @@ static int __init i2c_dev_init(void)
 		goto out;
 
 	i2c_dev_class = class_create(THIS_MODULE, "i2c-dev");
-	if (IS_ERR(i2c_dev_class))
+	if (IS_ERR(i2c_dev_class)) {
+		res = PTR_ERR(i2c_dev_class);
 		goto out_unreg_chrdev;
+	}
 
 	res = i2c_add_driver(&i2cdev_driver);
 	if (res)