Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm

* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (100 commits)
  ARM: Eliminate decompressor -Dstatic= PIC hack
  ARM: 5958/1: ARM: U300: fix inverted clk round rate
  ARM: 5956/1: misplaced parentheses
  ARM: 5955/1: ep93xx: move timer defines into core.c and document
  ARM: 5954/1: ep93xx: move gpio interrupt support to gpio.c
  ARM: 5953/1: ep93xx: fix broken build of clock.c
  ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each ARCH Kconfig
  ARM: 5949/1: NUC900 add gpio virtual memory map
  ARM: 5948/1: Enable timer0 to time4 clock support for nuc910
  ARM: 5940/2: ARM: MMCI: remove custom DBG macro and printk
  ARM: make_coherent(): fix problems with highpte, part 2
  MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself
  ARM: 5945/1: ep93xx: include correct irq.h in core.c
  ARM: 5933/1: amba-pl011: support hardware flow control
  ARM: 5930/1: Add PKMAP area description to memory.txt.
  ARM: 5929/1: Add checks to detect overlap of memory regions.
  ARM: 5928/1: Change type of VMALLOC_END to unsigned long.
  ARM: 5927/1: Make delimiters of DMA area globally visibly.
  ARM: 5926/1: Add "Virtual kernel memory..." printout.
  ARM: 5920/1: OMAP4: Enable L2 Cache
  ...

Fix up trivial conflict in arch/arm/mach-mx25/clock.c

6 files changed, 565 insertions, 202 deletions

diff --git a/drivers/i2c/busses/i2c-pnx.c b/drivers/i2c/busses/i2c-pnx.c
index 5d1c2603a130..2b0bd0b042d6 100644
--- a/drivers/i2c/busses/i2c-pnx.c
+++ b/drivers/i2c/busses/i2c-pnx.c
@@ -20,15 +20,15 @@
 #include <linux/platform_device.h>
 #include <linux/i2c-pnx.h>
 #include <linux/io.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+
 #include <mach/hardware.h>
 #include <mach/i2c.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
 
 #define I2C_PNX_TIMEOUT         10 /* msec */
 #define I2C_PNX_SPEED_KHZ       100
 #define I2C_PNX_REGION_SIZE     0x100
-#define PNX_DEFAULT_FREQ        13 /* MHz */
 
 static inline int wait_timeout(long timeout, struct i2c_pnx_algo_data *data)
 {
@@ -50,22 +50,21 @@ static inline int wait_reset(long timeout, struct i2c_pnx_algo_data *data)
         return (timeout <= 0);
 }
 
-static inline void i2c_pnx_arm_timer(struct i2c_adapter *adap)
+static inline void i2c_pnx_arm_timer(struct i2c_pnx_algo_data *alg_data)
 {
-        struct i2c_pnx_algo_data *data = adap->algo_data;
-        struct timer_list *timer = &data->mif.timer;
-        int expires = I2C_PNX_TIMEOUT / (1000 / HZ);
+        struct timer_list *timer = &alg_data->mif.timer;
+        unsigned long expires = msecs_to_jiffies(I2C_PNX_TIMEOUT);
 
         if (expires <= 1)
                 expires = 2;
 
         del_timer_sync(timer);
 
-        dev_dbg(&adap->dev, "Timer armed at %lu plus %u jiffies.\n",
+        dev_dbg(&alg_data->adapter.dev, "Timer armed at %lu plus %lu jiffies.\n",
                 jiffies, expires);
 
         timer->expires = jiffies + expires;
-        timer->data = (unsigned long)adap;
+        timer->data = (unsigned long)&alg_data;
 
         add_timer(timer);
 }
@@ -77,34 +76,34 @@ static inline void i2c_pnx_arm_timer(struct i2c_adapter *adap)
  *
  * Generate a START signal in the desired mode.
  */
-static int i2c_pnx_start(unsigned char slave_addr, struct i2c_adapter *adap)
+static int i2c_pnx_start(unsigned char slave_addr,
+        struct i2c_pnx_algo_data *alg_data)
 {
-        struct i2c_pnx_algo_data *alg_data = adap->algo_data;
-
-        dev_dbg(&adap->dev, "%s(): addr 0x%x mode %d\n", __func__,
+        dev_dbg(&alg_data->adapter.dev, "%s(): addr 0x%x mode %d\n", __func__,
                 slave_addr, alg_data->mif.mode);
 
         /* Check for 7 bit slave addresses only */
         if (slave_addr & ~0x7f) {
-                dev_err(&adap->dev, "%s: Invalid slave address %x. "
-                       "Only 7-bit addresses are supported\n",
-                       adap->name, slave_addr);
+                dev_err(&alg_data->adapter.dev,
+                        "%s: Invalid slave address %x. Only 7-bit addresses are supported\n",
+                        alg_data->adapter.name, slave_addr);
                 return -EINVAL;
         }
 
         /* First, make sure bus is idle */
         if (wait_timeout(I2C_PNX_TIMEOUT, alg_data)) {
                 /* Somebody else is monopolizing the bus */
-                dev_err(&adap->dev, "%s: Bus busy. Slave addr = %02x, "
-                       "cntrl = %x, stat = %x\n",
-                       adap->name, slave_addr,
-                       ioread32(I2C_REG_CTL(alg_data)),
-                       ioread32(I2C_REG_STS(alg_data)));
+                dev_err(&alg_data->adapter.dev,
+                        "%s: Bus busy. Slave addr = %02x, cntrl = %x, stat = %x\n",
+                        alg_data->adapter.name, slave_addr,
+                        ioread32(I2C_REG_CTL(alg_data)),
+                        ioread32(I2C_REG_STS(alg_data)));
                 return -EBUSY;
         } else if (ioread32(I2C_REG_STS(alg_data)) & mstatus_afi) {
                 /* Sorry, we lost the bus */
-                dev_err(&adap->dev, "%s: Arbitration failure. "
-                       "Slave addr = %02x\n", adap->name, slave_addr);
+                dev_err(&alg_data->adapter.dev,
+                        "%s: Arbitration failure. Slave addr = %02x\n",
+                        alg_data->adapter.name, slave_addr);
                 return -EIO;
         }
 
@@ -115,14 +114,14 @@ static int i2c_pnx_start(unsigned char slave_addr, struct i2c_adapter *adap)
         iowrite32(ioread32(I2C_REG_STS(alg_data)) | mstatus_tdi | mstatus_afi,
                   I2C_REG_STS(alg_data));
 
-        dev_dbg(&adap->dev, "%s(): sending %#x\n", __func__,
+        dev_dbg(&alg_data->adapter.dev, "%s(): sending %#x\n", __func__,
                 (slave_addr << 1) | start_bit | alg_data->mif.mode);
 
         /* Write the slave address, START bit and R/W bit */
         iowrite32((slave_addr << 1) | start_bit | alg_data->mif.mode,
                   I2C_REG_TX(alg_data));
 
-        dev_dbg(&adap->dev, "%s(): exit\n", __func__);
+        dev_dbg(&alg_data->adapter.dev, "%s(): exit\n", __func__);
 
         return 0;
 }
@@ -133,13 +132,12 @@ static int i2c_pnx_start(unsigned char slave_addr, struct i2c_adapter *adap)
  *
  * Generate a STOP signal to terminate the master transaction.
  */
-static void i2c_pnx_stop(struct i2c_adapter *adap)
+static void i2c_pnx_stop(struct i2c_pnx_algo_data *alg_data)
 {
-        struct i2c_pnx_algo_data *alg_data = adap->algo_data;
         /* Only 1 msec max timeout due to interrupt context */
         long timeout = 1000;
 
-        dev_dbg(&adap->dev, "%s(): entering: stat = %04x.\n",
+        dev_dbg(&alg_data->adapter.dev, "%s(): entering: stat = %04x.\n",
                 __func__, ioread32(I2C_REG_STS(alg_data)));
 
         /* Write a STOP bit to TX FIFO */
@@ -153,7 +151,7 @@ static void i2c_pnx_stop(struct i2c_adapter *adap)
                 timeout--;
         }
 
-        dev_dbg(&adap->dev, "%s(): exiting: stat = %04x.\n",
+        dev_dbg(&alg_data->adapter.dev, "%s(): exiting: stat = %04x.\n",
                 __func__, ioread32(I2C_REG_STS(alg_data)));
 }
 
@@ -163,12 +161,11 @@ static void i2c_pnx_stop(struct i2c_adapter *adap)
  *
  * Sends one byte of data to the slave
  */
-static int i2c_pnx_master_xmit(struct i2c_adapter *adap)
+static int i2c_pnx_master_xmit(struct i2c_pnx_algo_data *alg_data)
 {
-        struct i2c_pnx_algo_data *alg_data = adap->algo_data;
         u32 val;
 
-        dev_dbg(&adap->dev, "%s(): entering: stat = %04x.\n",
+        dev_dbg(&alg_data->adapter.dev, "%s(): entering: stat = %04x.\n",
                 __func__, ioread32(I2C_REG_STS(alg_data)));
 
         if (alg_data->mif.len > 0) {
@@ -184,15 +181,15 @@ static int i2c_pnx_master_xmit(struct i2c_adapter *adap)
                 alg_data->mif.len--;
                 iowrite32(val, I2C_REG_TX(alg_data));
 
-                dev_dbg(&adap->dev, "%s(): xmit %#x [%d]\n", __func__,
-                        val, alg_data->mif.len + 1);
+                dev_dbg(&alg_data->adapter.dev, "%s(): xmit %#x [%d]\n",
+                        __func__, val, alg_data->mif.len + 1);
 
                 if (alg_data->mif.len == 0) {
                         if (alg_data->last) {
                                 /* Wait until the STOP is seen. */
                                 if (wait_timeout(I2C_PNX_TIMEOUT, alg_data))
-                                        dev_err(&adap->dev, "The bus is still "
-                                                "active after timeout\n");
+                                        dev_err(&alg_data->adapter.dev,
+                                                "The bus is still active after timeout\n");
                         }
                         /* Disable master interrupts */
                         iowrite32(ioread32(I2C_REG_CTL(alg_data)) &
@@ -201,14 +198,15 @@ static int i2c_pnx_master_xmit(struct i2c_adapter *adap)
 
                         del_timer_sync(&alg_data->mif.timer);
 
-                        dev_dbg(&adap->dev, "%s(): Waking up xfer routine.\n",
+                        dev_dbg(&alg_data->adapter.dev,
+                                "%s(): Waking up xfer routine.\n",
                                 __func__);
 
                         complete(&alg_data->mif.complete);
                 }
         } else if (alg_data->mif.len == 0) {
                 /* zero-sized transfer */
-                i2c_pnx_stop(adap);
+                i2c_pnx_stop(alg_data);
 
                 /* Disable master interrupts. */
                 iowrite32(ioread32(I2C_REG_CTL(alg_data)) &
@@ -217,13 +215,14 @@ static int i2c_pnx_master_xmit(struct i2c_adapter *adap)
 
                 /* Stop timer. */
                 del_timer_sync(&alg_data->mif.timer);
-                dev_dbg(&adap->dev, "%s(): Waking up xfer routine after "
-                        "zero-xfer.\n", __func__);
+                dev_dbg(&alg_data->adapter.dev,
+                        "%s(): Waking up xfer routine after zero-xfer.\n",
+                        __func__);
 
                 complete(&alg_data->mif.complete);
         }
 
-        dev_dbg(&adap->dev, "%s(): exiting: stat = %04x.\n",
+        dev_dbg(&alg_data->adapter.dev, "%s(): exiting: stat = %04x.\n",
                 __func__, ioread32(I2C_REG_STS(alg_data)));
 
         return 0;
@@ -235,21 +234,21 @@ static int i2c_pnx_master_xmit(struct i2c_adapter *adap)
  *
  * Reads one byte data from the slave
  */
-static int i2c_pnx_master_rcv(struct i2c_adapter *adap)
+static int i2c_pnx_master_rcv(struct i2c_pnx_algo_data *alg_data)
 {
-        struct i2c_pnx_algo_data *alg_data = adap->algo_data;
         unsigned int val = 0;
         u32 ctl = 0;
 
-        dev_dbg(&adap->dev, "%s(): entering: stat = %04x.\n",
+        dev_dbg(&alg_data->adapter.dev, "%s(): entering: stat = %04x.\n",
                 __func__, ioread32(I2C_REG_STS(alg_data)));
 
         /* Check, whether there is already data,
          * or we didn't 'ask' for it yet.
          */
         if (ioread32(I2C_REG_STS(alg_data)) & mstatus_rfe) {
-                dev_dbg(&adap->dev, "%s(): Write dummy data to fill "
-                        "Rx-fifo...\n", __func__);
+                dev_dbg(&alg_data->adapter.dev,
+                        "%s(): Write dummy data to fill Rx-fifo...\n",
+                        __func__);
 
                 if (alg_data->mif.len == 1) {
                         /* Last byte, do not acknowledge next rcv. */
@@ -281,16 +280,16 @@ static int i2c_pnx_master_rcv(struct i2c_adapter *adap)
         if (alg_data->mif.len > 0) {
                 val = ioread32(I2C_REG_RX(alg_data));
                 *alg_data->mif.buf++ = (u8) (val & 0xff);
-                dev_dbg(&adap->dev, "%s(): rcv 0x%x [%d]\n", __func__, val,
-                        alg_data->mif.len);
+                dev_dbg(&alg_data->adapter.dev, "%s(): rcv 0x%x [%d]\n",
+                        __func__, val, alg_data->mif.len);
 
                 alg_data->mif.len--;
                 if (alg_data->mif.len == 0) {
                         if (alg_data->last)
                                 /* Wait until the STOP is seen. */
                                 if (wait_timeout(I2C_PNX_TIMEOUT, alg_data))
-                                        dev_err(&adap->dev, "The bus is still "
-                                                "active after timeout\n");
+                                        dev_err(&alg_data->adapter.dev,
+                                                "The bus is still active after timeout\n");
 
                         /* Disable master interrupts */
                         ctl = ioread32(I2C_REG_CTL(alg_data));
@@ -304,7 +303,7 @@ static int i2c_pnx_master_rcv(struct i2c_adapter *adap)
                 }
         }
 
-        dev_dbg(&adap->dev, "%s(): exiting: stat = %04x.\n",
+        dev_dbg(&alg_data->adapter.dev, "%s(): exiting: stat = %04x.\n",
                 __func__, ioread32(I2C_REG_STS(alg_data)));
 
         return 0;
@@ -312,11 +311,11 @@ static int i2c_pnx_master_rcv(struct i2c_adapter *adap)
 
 static irqreturn_t i2c_pnx_interrupt(int irq, void *dev_id)
 {
+        struct i2c_pnx_algo_data *alg_data = dev_id;
         u32 stat, ctl;
-        struct i2c_adapter *adap = dev_id;
-        struct i2c_pnx_algo_data *alg_data = adap->algo_data;
 
-        dev_dbg(&adap->dev, "%s(): mstat = %x mctrl = %x, mode = %d\n",
+        dev_dbg(&alg_data->adapter.dev,
+                "%s(): mstat = %x mctrl = %x, mode = %d\n",
                 __func__,
                 ioread32(I2C_REG_STS(alg_data)),
                 ioread32(I2C_REG_CTL(alg_data)),
@@ -339,10 +338,10 @@ static irqreturn_t i2c_pnx_interrupt(int irq, void *dev_id)
                 complete(&alg_data->mif.complete);
         } else if (stat & mstatus_nai) {
                 /* Slave did not acknowledge, generate a STOP */
-                dev_dbg(&adap->dev, "%s(): "
-                        "Slave did not acknowledge, generating a STOP.\n",
+                dev_dbg(&alg_data->adapter.dev,
+                        "%s(): Slave did not acknowledge, generating a STOP.\n",
                         __func__);
-                i2c_pnx_stop(adap);
+                i2c_pnx_stop(alg_data);
 
                 /* Disable master interrupts. */
                 ctl = ioread32(I2C_REG_CTL(alg_data));
@@ -368,9 +367,9 @@ static irqreturn_t i2c_pnx_interrupt(int irq, void *dev_id)
                  */
                 if ((stat & mstatus_drmi) || !(stat & mstatus_rfe)) {
                         if (alg_data->mif.mode == I2C_SMBUS_WRITE) {
-                                i2c_pnx_master_xmit(adap);
+                                i2c_pnx_master_xmit(alg_data);
                         } else if (alg_data->mif.mode == I2C_SMBUS_READ) {
-                                i2c_pnx_master_rcv(adap);
+                                i2c_pnx_master_rcv(alg_data);
                         }
                 }
         }
@@ -379,7 +378,8 @@ static irqreturn_t i2c_pnx_interrupt(int irq, void *dev_id)
         stat = ioread32(I2C_REG_STS(alg_data));
         iowrite32(stat | mstatus_tdi | mstatus_afi, I2C_REG_STS(alg_data));
 
-        dev_dbg(&adap->dev, "%s(): exiting, stat = %x ctrl = %x.\n",
+        dev_dbg(&alg_data->adapter.dev,
+                "%s(): exiting, stat = %x ctrl = %x.\n",
                  __func__, ioread32(I2C_REG_STS(alg_data)),
                  ioread32(I2C_REG_CTL(alg_data)));
 
@@ -388,14 +388,13 @@ static irqreturn_t i2c_pnx_interrupt(int irq, void *dev_id)
 
 static void i2c_pnx_timeout(unsigned long data)
 {
-        struct i2c_adapter *adap = (struct i2c_adapter *)data;
-        struct i2c_pnx_algo_data *alg_data = adap->algo_data;
+        struct i2c_pnx_algo_data *alg_data = (struct i2c_pnx_algo_data *)data;
         u32 ctl;
 
-        dev_err(&adap->dev, "Master timed out. stat = %04x, cntrl = %04x. "
-               "Resetting master...\n",
-               ioread32(I2C_REG_STS(alg_data)),
-               ioread32(I2C_REG_CTL(alg_data)));
+        dev_err(&alg_data->adapter.dev,
+                "Master timed out. stat = %04x, cntrl = %04x. Resetting master...\n",
+                ioread32(I2C_REG_STS(alg_data)),
+                ioread32(I2C_REG_CTL(alg_data)));
 
         /* Reset master and disable interrupts */
         ctl = ioread32(I2C_REG_CTL(alg_data));
@@ -409,15 +408,14 @@ static void i2c_pnx_timeout(unsigned long data)
         complete(&alg_data->mif.complete);
 }
 
-static inline void bus_reset_if_active(struct i2c_adapter *adap)
+static inline void bus_reset_if_active(struct i2c_pnx_algo_data *alg_data)
 {
-        struct i2c_pnx_algo_data *alg_data = adap->algo_data;
         u32 stat;
 
         if ((stat = ioread32(I2C_REG_STS(alg_data))) & mstatus_active) {
-                dev_err(&adap->dev,
+                dev_err(&alg_data->adapter.dev,
                         "%s: Bus is still active after xfer. Reset it...\n",
-                       adap->name);
+                        alg_data->adapter.name);
                 iowrite32(ioread32(I2C_REG_CTL(alg_data)) | mcntrl_reset,
                           I2C_REG_CTL(alg_data));
                 wait_reset(I2C_PNX_TIMEOUT, alg_data);
@@ -451,10 +449,11 @@ i2c_pnx_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
         struct i2c_pnx_algo_data *alg_data = adap->algo_data;
         u32 stat = ioread32(I2C_REG_STS(alg_data));
 
-        dev_dbg(&adap->dev, "%s(): entering: %d messages, stat = %04x.\n",
+        dev_dbg(&alg_data->adapter.dev,
+                "%s(): entering: %d messages, stat = %04x.\n",
                 __func__, num, ioread32(I2C_REG_STS(alg_data)));
 
-        bus_reset_if_active(adap);
+        bus_reset_if_active(alg_data);
 
         /* Process transactions in a loop. */
         for (i = 0; rc >= 0 && i < num; i++) {
@@ -464,9 +463,9 @@ i2c_pnx_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
                 addr = pmsg->addr;
 
                 if (pmsg->flags & I2C_M_TEN) {
-                        dev_err(&adap->dev,
+                        dev_err(&alg_data->adapter.dev,
                                 "%s: 10 bits addr not supported!\n",
-                                adap->name);
+                                alg_data->adapter.name);
                         rc = -EINVAL;
                         break;
                 }
@@ -478,11 +477,10 @@ i2c_pnx_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
                 alg_data->mif.ret = 0;
                 alg_data->last = (i == num - 1);
 
-                dev_dbg(&adap->dev, "%s(): mode %d, %d bytes\n", __func__,
-                        alg_data->mif.mode,
-                        alg_data->mif.len);
+                dev_dbg(&alg_data->adapter.dev, "%s(): mode %d, %d bytes\n",
+                        __func__, alg_data->mif.mode, alg_data->mif.len);
 
-                i2c_pnx_arm_timer(adap);
+                i2c_pnx_arm_timer(alg_data);
 
                 /* initialize the completion var */
                 init_completion(&alg_data->mif.complete);
@@ -493,7 +491,7 @@ i2c_pnx_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
                           I2C_REG_CTL(alg_data));
 
                 /* Put start-code and slave-address on the bus. */
-                rc = i2c_pnx_start(addr, adap);
+                rc = i2c_pnx_start(addr, alg_data);
                 if (rc < 0)
                         break;
 
@@ -502,31 +500,32 @@ i2c_pnx_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
 
                 if (!(rc = alg_data->mif.ret))
                         completed++;
-                dev_dbg(&adap->dev, "%s(): Complete, return code = %d.\n",
+                dev_dbg(&alg_data->adapter.dev,
+                        "%s(): Complete, return code = %d.\n",
                         __func__, rc);
 
                 /* Clear TDI and AFI bits in case they are set. */
                 if ((stat = ioread32(I2C_REG_STS(alg_data))) & mstatus_tdi) {
-                        dev_dbg(&adap->dev,
+                        dev_dbg(&alg_data->adapter.dev,
                                 "%s: TDI still set... clearing now.\n",
-                               adap->name);
+                                alg_data->adapter.name);
                         iowrite32(stat, I2C_REG_STS(alg_data));
                 }
                 if ((stat = ioread32(I2C_REG_STS(alg_data))) & mstatus_afi) {
-                        dev_dbg(&adap->dev,
+                        dev_dbg(&alg_data->adapter.dev,
                                 "%s: AFI still set... clearing now.\n",
-                               adap->name);
+                                alg_data->adapter.name);
                         iowrite32(stat, I2C_REG_STS(alg_data));
                 }
         }
 
-        bus_reset_if_active(adap);
+        bus_reset_if_active(alg_data);
 
         /* Cleanup to be sure... */
         alg_data->mif.buf = NULL;
         alg_data->mif.len = 0;
 
-        dev_dbg(&adap->dev, "%s(): exiting, stat = %x\n",
+        dev_dbg(&alg_data->adapter.dev, "%s(): exiting, stat = %x\n",
                 __func__, ioread32(I2C_REG_STS(alg_data)));
 
         if (completed != num)
@@ -545,69 +544,92 @@ static struct i2c_algorithm pnx_algorithm = {
         .functionality = i2c_pnx_func,
 };
 
+#ifdef CONFIG_PM
 static int i2c_pnx_controller_suspend(struct platform_device *pdev,
                                       pm_message_t state)
 {
-        struct i2c_pnx_data *i2c_pnx = platform_get_drvdata(pdev);
-        return i2c_pnx->suspend(pdev, state);
+        struct i2c_pnx_algo_data *alg_data = platform_get_drvdata(pdev);
+
+        /* FIXME: shouldn't this be clk_disable? */
+        clk_enable(alg_data->clk);
+
+        return 0;
 }
 
 static int i2c_pnx_controller_resume(struct platform_device *pdev)
 {
-        struct i2c_pnx_data *i2c_pnx = platform_get_drvdata(pdev);
-        return i2c_pnx->resume(pdev);
+        struct i2c_pnx_algo_data *alg_data = platform_get_drvdata(pdev);
+
+        return clk_enable(alg_data->clk);
 }
+#else
+#define i2c_pnx_controller_suspend      NULL
+#define i2c_pnx_controller_resume       NULL
+#endif
 
 static int __devinit i2c_pnx_probe(struct platform_device *pdev)
 {
         unsigned long tmp;
         int ret = 0;
         struct i2c_pnx_algo_data *alg_data;
-        int freq_mhz;
+        unsigned long freq;
         struct i2c_pnx_data *i2c_pnx = pdev->dev.platform_data;
 
-        if (!i2c_pnx || !i2c_pnx->adapter) {
+        if (!i2c_pnx || !i2c_pnx->name) {
                 dev_err(&pdev->dev, "%s: no platform data supplied\n",
                        __func__);
                 ret = -EINVAL;
                 goto out;
         }
 
-        platform_set_drvdata(pdev, i2c_pnx);
-
-        if (i2c_pnx->calculate_input_freq)
-                freq_mhz = i2c_pnx->calculate_input_freq(pdev);
-        else {
-                freq_mhz = PNX_DEFAULT_FREQ;
-                dev_info(&pdev->dev, "Setting bus frequency to default value: "
-                       "%d MHz\n", freq_mhz);
+        alg_data = kzalloc(sizeof(*alg_data), GFP_KERNEL);
+        if (!alg_data) {
+                ret = -ENOMEM;
+                goto err_kzalloc;
         }
 
-        i2c_pnx->adapter->algo = &pnx_algorithm;
+        platform_set_drvdata(pdev, alg_data);
+
+        strlcpy(alg_data->adapter.name, i2c_pnx->name,
+                sizeof(alg_data->adapter.name));
+        alg_data->adapter.dev.parent = &pdev->dev;
+        alg_data->adapter.algo = &pnx_algorithm;
+        alg_data->adapter.algo_data = alg_data;
+        alg_data->adapter.nr = pdev->id;
+        alg_data->i2c_pnx = i2c_pnx;
+
+        alg_data->clk = clk_get(&pdev->dev, NULL);
+        if (IS_ERR(alg_data->clk)) {
+                ret = PTR_ERR(alg_data->clk);
+                goto out_drvdata;
+        }
 
-        alg_data = i2c_pnx->adapter->algo_data;
         init_timer(&alg_data->mif.timer);
         alg_data->mif.timer.function = i2c_pnx_timeout;
-        alg_data->mif.timer.data = (unsigned long)i2c_pnx->adapter;
+        alg_data->mif.timer.data = (unsigned long)alg_data;
 
         /* Register I/O resource */
-        if (!request_mem_region(alg_data->base, I2C_PNX_REGION_SIZE,
+        if (!request_mem_region(i2c_pnx->base, I2C_PNX_REGION_SIZE,
                                 pdev->name)) {
                 dev_err(&pdev->dev,
                        "I/O region 0x%08x for I2C already in use.\n",
-                       alg_data->base);
+                       i2c_pnx->base);
                 ret = -ENODEV;
-                goto out_drvdata;
+                goto out_clkget;
         }
 
-        if (!(alg_data->ioaddr =
-                        (u32)ioremap(alg_data->base, I2C_PNX_REGION_SIZE))) {
+        alg_data->ioaddr = ioremap(i2c_pnx->base, I2C_PNX_REGION_SIZE);
+        if (!alg_data->ioaddr) {
                 dev_err(&pdev->dev, "Couldn't ioremap I2C I/O region\n");
                 ret = -ENOMEM;
                 goto out_release;
         }
 
-        i2c_pnx->set_clock_run(pdev);
+        ret = clk_enable(alg_data->clk);
+        if (ret)
+                goto out_unmap;
+
+        freq = clk_get_rate(alg_data->clk);
 
         /*
          * Clock Divisor High This value is the number of system clocks
@@ -620,45 +642,47 @@ static int __devinit i2c_pnx_probe(struct platform_device *pdev)
          * the deglitching filter length.
          */
 
-        tmp = ((freq_mhz * 1000) / I2C_PNX_SPEED_KHZ) / 2 - 2;
+        tmp = ((freq / 1000) / I2C_PNX_SPEED_KHZ) / 2 - 2;
         iowrite32(tmp, I2C_REG_CKH(alg_data));
         iowrite32(tmp, I2C_REG_CKL(alg_data));
 
         iowrite32(mcntrl_reset, I2C_REG_CTL(alg_data));
         if (wait_reset(I2C_PNX_TIMEOUT, alg_data)) {
                 ret = -ENODEV;
-                goto out_unmap;
+                goto out_clock;
         }
         init_completion(&alg_data->mif.complete);
 
-        ret = request_irq(alg_data->irq, i2c_pnx_interrupt,
-                        0, pdev->name, i2c_pnx->adapter);
+        ret = request_irq(i2c_pnx->irq, i2c_pnx_interrupt,
+                        0, pdev->name, alg_data);
         if (ret)
                 goto out_clock;
 
         /* Register this adapter with the I2C subsystem */
-        i2c_pnx->adapter->dev.parent = &pdev->dev;
-        i2c_pnx->adapter->nr = pdev->id;
-        ret = i2c_add_numbered_adapter(i2c_pnx->adapter);
+        ret = i2c_add_numbered_adapter(&alg_data->adapter);
         if (ret < 0) {
                 dev_err(&pdev->dev, "I2C: Failed to add bus\n");
                 goto out_irq;
         }
 
         dev_dbg(&pdev->dev, "%s: Master at %#8x, irq %d.\n",
-               i2c_pnx->adapter->name, alg_data->base, alg_data->irq);
+               alg_data->adapter.name, i2c_pnx->base, i2c_pnx->irq);
 
         return 0;
 
 out_irq:
-        free_irq(alg_data->irq, i2c_pnx->adapter);
+        free_irq(i2c_pnx->irq, alg_data);
 out_clock:
-        i2c_pnx->set_clock_stop(pdev);
+        clk_disable(alg_data->clk);
 out_unmap:
-        iounmap((void *)alg_data->ioaddr);
+        iounmap(alg_data->ioaddr);
 out_release:
-        release_mem_region(alg_data->base, I2C_PNX_REGION_SIZE);
+        release_mem_region(i2c_pnx->base, I2C_PNX_REGION_SIZE);
+out_clkget:
+        clk_put(alg_data->clk);
 out_drvdata:
+        kfree(alg_data);
+err_kzalloc:
         platform_set_drvdata(pdev, NULL);
 out:
         return ret;
@@ -666,15 +690,16 @@ out:
 
 static int __devexit i2c_pnx_remove(struct platform_device *pdev)
 {
-        struct i2c_pnx_data *i2c_pnx = platform_get_drvdata(pdev);
-        struct i2c_adapter *adap = i2c_pnx->adapter;
-        struct i2c_pnx_algo_data *alg_data = adap->algo_data;
-
-        free_irq(alg_data->irq, i2c_pnx->adapter);
-        i2c_del_adapter(adap);
-        i2c_pnx->set_clock_stop(pdev);
-        iounmap((void *)alg_data->ioaddr);
-        release_mem_region(alg_data->base, I2C_PNX_REGION_SIZE);
+        struct i2c_pnx_algo_data *alg_data = platform_get_drvdata(pdev);
+        struct i2c_pnx_data *i2c_pnx = alg_data->i2c_pnx;
+
+        free_irq(i2c_pnx->irq, alg_data);
+        i2c_del_adapter(&alg_data->adapter);
+        clk_disable(alg_data->clk);
+        iounmap(alg_data->ioaddr);
+        release_mem_region(i2c_pnx->base, I2C_PNX_REGION_SIZE);
+        clk_put(alg_data->clk);
+        kfree(alg_data);
         platform_set_drvdata(pdev, NULL);
 
         return 0;
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 90d168ad03b6..84c103a7ee13 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -2,6 +2,7 @@
  *  linux/drivers/mmc/host/mmci.c - ARM PrimeCell MMCI PL180/1 driver
  *
  *  Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved.
+ *  Copyright (C) 2010 ST-Ericsson AB.
  *
  * 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
@@ -34,9 +35,6 @@
 
 #define DRIVER_NAME "mmci-pl18x"
 
-#define DBG(host,fmt,args...)   \
-        pr_debug("%s: %s: " fmt, mmc_hostname(host->mmc), __func__ , args)
-
 static unsigned int fmax = 515633;
 
 /*
@@ -105,8 +103,8 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
         void __iomem *base;
         int blksz_bits;
 
-        DBG(host, "blksz %04x blks %04x flags %08x\n",
-            data->blksz, data->blocks, data->flags);
+        dev_dbg(mmc_dev(host->mmc), "blksz %04x blks %04x flags %08x\n",
+                data->blksz, data->blocks, data->flags);
 
         host->data = data;
         host->size = data->blksz;
@@ -155,7 +153,7 @@ mmci_start_command(struct mmci_host *host, struct mmc_command *cmd, u32 c)
 {
         void __iomem *base = host->base;
 
-        DBG(host, "op %02x arg %08x flags %08x\n",
+        dev_dbg(mmc_dev(host->mmc), "op %02x arg %08x flags %08x\n",
             cmd->opcode, cmd->arg, cmd->flags);
 
         if (readl(base + MMCICOMMAND) & MCI_CPSM_ENABLE) {
@@ -184,8 +182,20 @@ mmci_data_irq(struct mmci_host *host, struct mmc_data *data,
 {
         if (status & MCI_DATABLOCKEND) {
                 host->data_xfered += data->blksz;
+#ifdef CONFIG_ARCH_U300
+                /*
+                 * On the U300 some signal or other is
+                 * badly routed so that a data write does
+                 * not properly terminate with a MCI_DATAEND
+                 * status flag. This quirk will make writes
+                 * work again.
+                 */
+                if (data->flags & MMC_DATA_WRITE)
+                        status |= MCI_DATAEND;
+#endif
         }
         if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_TXUNDERRUN|MCI_RXOVERRUN)) {
+                dev_dbg(mmc_dev(host->mmc), "MCI ERROR IRQ (status %08x)\n", status);
                 if (status & MCI_DATACRCFAIL)
                         data->error = -EILSEQ;
                 else if (status & MCI_DATATIMEOUT)
@@ -307,7 +317,7 @@ static irqreturn_t mmci_pio_irq(int irq, void *dev_id)
 
         status = readl(base + MMCISTATUS);
 
-        DBG(host, "irq1 %08x\n", status);
+        dev_dbg(mmc_dev(host->mmc), "irq1 (pio) %08x\n", status);
 
         do {
                 unsigned long flags;
@@ -401,7 +411,7 @@ static irqreturn_t mmci_irq(int irq, void *dev_id)
                 status &= readl(host->base + MMCIMASK0);
                 writel(status, host->base + MMCICLEAR);
 
-                DBG(host, "irq0 %08x\n", status);
+                dev_dbg(mmc_dev(host->mmc), "irq0 (data+cmd) %08x\n", status);
 
                 data = host->data;
                 if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_TXUNDERRUN|
@@ -428,8 +438,8 @@ static void mmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
         WARN_ON(host->mrq != NULL);
 
         if (mrq->data && !is_power_of_2(mrq->data->blksz)) {
-                printk(KERN_ERR "%s: Unsupported block size (%d bytes)\n",
-                        mmc_hostname(mmc), mrq->data->blksz);
+                dev_err(mmc_dev(mmc), "unsupported block size (%d bytes)\n",
+                        mrq->data->blksz);
                 mrq->cmd->error = -EINVAL;
                 mmc_request_done(mmc, mrq);
                 return;
@@ -582,8 +592,8 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
 
         host->hw_designer = amba_manf(dev);
         host->hw_revision = amba_rev(dev);
-        DBG(host, "designer ID = 0x%02x\n", host->hw_designer);
-        DBG(host, "revision = 0x%01x\n", host->hw_revision);
+        dev_dbg(mmc_dev(mmc), "designer ID = 0x%02x\n", host->hw_designer);
+        dev_dbg(mmc_dev(mmc), "revision = 0x%01x\n", host->hw_revision);
 
         host->clk = clk_get(&dev->dev, NULL);
         if (IS_ERR(host->clk)) {
@@ -608,7 +618,8 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
                 if (ret < 0)
                         goto clk_disable;
                 host->mclk = clk_get_rate(host->clk);
-                DBG(host, "eventual mclk rate: %u Hz\n", host->mclk);
+                dev_dbg(mmc_dev(mmc), "eventual mclk rate: %u Hz\n",
+                        host->mclk);
         }
         host->base = ioremap(dev->res.start, resource_size(&dev->res));
         if (!host->base) {
@@ -619,6 +630,8 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
         mmc->ops = &mmci_ops;
         mmc->f_min = (host->mclk + 511) / 512;
         mmc->f_max = min(host->mclk, fmax);
+        dev_dbg(mmc_dev(mmc), "clocking block at %u Hz\n", mmc->f_max);
+
 #ifdef CONFIG_REGULATOR
         /* If we're using the regulator framework, try to fetch a regulator */
         host->vcc = regulator_get(&dev->dev, "vmmc");
@@ -712,7 +725,7 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
 
         mmc_add_host(mmc);
 
-        printk(KERN_INFO "%s: MMCI rev %x cfg %02x at 0x%016llx irq %d,%d\n",
+        dev_info(&dev->dev, "%s: MMCI rev %x cfg %02x at 0x%016llx irq %d,%d\n",
                 mmc_hostname(mmc), amba_rev(dev), amba_config(dev),
                 (unsigned long long)dev->res.start, dev->irq[0], dev->irq[1]);
 
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index 0264b117893b..c256aacfa954 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -7,6 +7,9 @@
  *
  * Copyright 2006 (c) MontaVista Software, Inc.
  *
+ * Author: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
+ * Copyright 2010 (c) ST-Ericsson AB
+ *
  * 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
@@ -18,6 +21,9 @@
 #include <linux/interrupt.h>
 #include <linux/amba/bus.h>
 #include <linux/io.h>
+#include <linux/bcd.h>
+#include <linux/delay.h>
+#include <linux/version.h>
 
 /*
  * Register definitions
@@ -30,35 +36,207 @@
 #define RTC_RIS         0x14    /* Raw interrupt status register */
 #define RTC_MIS         0x18    /* Masked interrupt status register */
 #define RTC_ICR         0x1c    /* Interrupt clear register */
+/* ST variants have additional timer functionality */
+#define RTC_TDR         0x20    /* Timer data read register */
+#define RTC_TLR         0x24    /* Timer data load register */
+#define RTC_TCR         0x28    /* Timer control register */
+#define RTC_YDR         0x30    /* Year data read register */
+#define RTC_YMR         0x34    /* Year match register */
+#define RTC_YLR         0x38    /* Year data load register */
+
+#define RTC_CR_CWEN     (1 << 26)       /* Clockwatch enable bit */
+
+#define RTC_TCR_EN      (1 << 1) /* Periodic timer enable bit */
+
+/* Common bit definitions for Interrupt status and control registers */
+#define RTC_BIT_AI      (1 << 0) /* Alarm interrupt bit */
+#define RTC_BIT_PI      (1 << 1) /* Periodic interrupt bit. ST variants only. */
+
+/* Common bit definations for ST v2 for reading/writing time */
+#define RTC_SEC_SHIFT 0
+#define RTC_SEC_MASK (0x3F << RTC_SEC_SHIFT) /* Second [0-59] */
+#define RTC_MIN_SHIFT 6
+#define RTC_MIN_MASK (0x3F << RTC_MIN_SHIFT) /* Minute [0-59] */
+#define RTC_HOUR_SHIFT 12
+#define RTC_HOUR_MASK (0x1F << RTC_HOUR_SHIFT) /* Hour [0-23] */
+#define RTC_WDAY_SHIFT 17
+#define RTC_WDAY_MASK (0x7 << RTC_WDAY_SHIFT) /* Day of Week [1-7] 1=Sunday */
+#define RTC_MDAY_SHIFT 20
+#define RTC_MDAY_MASK (0x1F << RTC_MDAY_SHIFT) /* Day of Month [1-31] */
+#define RTC_MON_SHIFT 25
+#define RTC_MON_MASK (0xF << RTC_MON_SHIFT) /* Month [1-12] 1=January */
+
+#define RTC_TIMER_FREQ 32768
 
 struct pl031_local {
         struct rtc_device *rtc;
         void __iomem *base;
+        u8 hw_designer;
+        u8 hw_revision:4;
 };
 
-static irqreturn_t pl031_interrupt(int irq, void *dev_id)
+static int pl031_alarm_irq_enable(struct device *dev,
+        unsigned int enabled)
+{
+        struct pl031_local *ldata = dev_get_drvdata(dev);
+        unsigned long imsc;
+
+        /* Clear any pending alarm interrupts. */
+        writel(RTC_BIT_AI, ldata->base + RTC_ICR);
+
+        imsc = readl(ldata->base + RTC_IMSC);
+
+        if (enabled == 1)
+                writel(imsc | RTC_BIT_AI, ldata->base + RTC_IMSC);
+        else
+                writel(imsc & ~RTC_BIT_AI, ldata->base + RTC_IMSC);
+
+        return 0;
+}
+
+/*
+ * Convert Gregorian date to ST v2 RTC format.
+ */
+static int pl031_stv2_tm_to_time(struct device *dev,
+                                 struct rtc_time *tm, unsigned long *st_time,
+        unsigned long *bcd_year)
+{
+        int year = tm->tm_year + 1900;
+        int wday = tm->tm_wday;
+
+        /* wday masking is not working in hardware so wday must be valid */
+        if (wday < -1 || wday > 6) {
+                dev_err(dev, "invalid wday value %d\n", tm->tm_wday);
+                return -EINVAL;
+        } else if (wday == -1) {
+                /* wday is not provided, calculate it here */
+                unsigned long time;
+                struct rtc_time calc_tm;
+
+                rtc_tm_to_time(tm, &time);
+                rtc_time_to_tm(time, &calc_tm);
+                wday = calc_tm.tm_wday;
+        }
+
+        *bcd_year = (bin2bcd(year % 100) | bin2bcd(year / 100) << 8);
+
+        *st_time = ((tm->tm_mon + 1) << RTC_MON_SHIFT)
+                        |       (tm->tm_mday << RTC_MDAY_SHIFT)
+                        |       ((wday + 1) << RTC_WDAY_SHIFT)
+                        |       (tm->tm_hour << RTC_HOUR_SHIFT)
+                        |       (tm->tm_min << RTC_MIN_SHIFT)
+                        |       (tm->tm_sec << RTC_SEC_SHIFT);
+
+        return 0;
+}
+
+/*
+ * Convert ST v2 RTC format to Gregorian date.
+ */
+static int pl031_stv2_time_to_tm(unsigned long st_time, unsigned long bcd_year,
+        struct rtc_time *tm)
+{
+        tm->tm_year = bcd2bin(bcd_year) + (bcd2bin(bcd_year >> 8) * 100);
+        tm->tm_mon  = ((st_time & RTC_MON_MASK) >> RTC_MON_SHIFT) - 1;
+        tm->tm_mday = ((st_time & RTC_MDAY_MASK) >> RTC_MDAY_SHIFT);
+        tm->tm_wday = ((st_time & RTC_WDAY_MASK) >> RTC_WDAY_SHIFT) - 1;
+        tm->tm_hour = ((st_time & RTC_HOUR_MASK) >> RTC_HOUR_SHIFT);
+        tm->tm_min  = ((st_time & RTC_MIN_MASK) >> RTC_MIN_SHIFT);
+        tm->tm_sec  = ((st_time & RTC_SEC_MASK) >> RTC_SEC_SHIFT);
+
+        tm->tm_yday = rtc_year_days(tm->tm_mday, tm->tm_mon, tm->tm_year);
+        tm->tm_year -= 1900;
+
+        return 0;
+}
+
+static int pl031_stv2_read_time(struct device *dev, struct rtc_time *tm)
+{
+        struct pl031_local *ldata = dev_get_drvdata(dev);
+
+        pl031_stv2_time_to_tm(readl(ldata->base + RTC_DR),
+                        readl(ldata->base + RTC_YDR), tm);
+
+        return 0;
+}
+
+static int pl031_stv2_set_time(struct device *dev, struct rtc_time *tm)
+{
+        unsigned long time;
+        unsigned long bcd_year;
+        struct pl031_local *ldata = dev_get_drvdata(dev);
+        int ret;
+
+        ret = pl031_stv2_tm_to_time(dev, tm, &time, &bcd_year);
+        if (ret == 0) {
+                writel(bcd_year, ldata->base + RTC_YLR);
+                writel(time, ldata->base + RTC_LR);
+        }
+
+        return ret;
+}
+
+static int pl031_stv2_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
 {
-        struct rtc_device *rtc = dev_id;
+        struct pl031_local *ldata = dev_get_drvdata(dev);
+        int ret;
 
-        rtc_update_irq(rtc, 1, RTC_AF);
+        ret = pl031_stv2_time_to_tm(readl(ldata->base + RTC_MR),
+                        readl(ldata->base + RTC_YMR), &alarm->time);
 
-        return IRQ_HANDLED;
+        alarm->pending = readl(ldata->base + RTC_RIS) & RTC_BIT_AI;
+        alarm->enabled = readl(ldata->base + RTC_IMSC) & RTC_BIT_AI;
+
+        return ret;
 }
 
-static int pl031_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
+static int pl031_stv2_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
 {
         struct pl031_local *ldata = dev_get_drvdata(dev);
+        unsigned long time;
+        unsigned long bcd_year;
+        int ret;
+
+        /* At the moment, we can only deal with non-wildcarded alarm times. */
+        ret = rtc_valid_tm(&alarm->time);
+        if (ret == 0) {
+                ret = pl031_stv2_tm_to_time(dev, &alarm->time,
+                                            &time, &bcd_year);
+                if (ret == 0) {
+                        writel(bcd_year, ldata->base + RTC_YMR);
+                        writel(time, ldata->base + RTC_MR);
+
+                        pl031_alarm_irq_enable(dev, alarm->enabled);
+                }
+        }
+
+        return ret;
+}
+
+static irqreturn_t pl031_interrupt(int irq, void *dev_id)
+{
+        struct pl031_local *ldata = dev_id;
+        unsigned long rtcmis;
+        unsigned long events = 0;
+
+        rtcmis = readl(ldata->base + RTC_MIS);
+        if (rtcmis) {
+                writel(rtcmis, ldata->base + RTC_ICR);
+
+                if (rtcmis & RTC_BIT_AI)
+                        events |= (RTC_AF | RTC_IRQF);
+
+                /* Timer interrupt is only available in ST variants */
+                if ((rtcmis & RTC_BIT_PI) &&
+                        (ldata->hw_designer == AMBA_VENDOR_ST))
+                        events |= (RTC_PF | RTC_IRQF);
+
+                rtc_update_irq(ldata->rtc, 1, events);
 
-        switch (cmd) {
-        case RTC_AIE_OFF:
-                writel(1, ldata->base + RTC_MIS);
-                return 0;
-        case RTC_AIE_ON:
-                writel(0, ldata->base + RTC_MIS);
-                return 0;
+                return IRQ_HANDLED;
         }
 
-        return -ENOIOCTLCMD;
+        return IRQ_NONE;
 }
 
 static int pl031_read_time(struct device *dev, struct rtc_time *tm)
@@ -74,11 +252,14 @@ static int pl031_set_time(struct device *dev, struct rtc_time *tm)
 {
         unsigned long time;
         struct pl031_local *ldata = dev_get_drvdata(dev);
+        int ret;
 
-        rtc_tm_to_time(tm, &time);
-        writel(time, ldata->base + RTC_LR);
+        ret = rtc_tm_to_time(tm, &time);
 
-        return 0;
+        if (ret == 0)
+                writel(time, ldata->base + RTC_LR);
+
+        return ret;
 }
 
 static int pl031_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
@@ -86,8 +267,9 @@ static int pl031_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
         struct pl031_local *ldata = dev_get_drvdata(dev);
 
         rtc_time_to_tm(readl(ldata->base + RTC_MR), &alarm->time);
-        alarm->pending = readl(ldata->base + RTC_RIS);
-        alarm->enabled = readl(ldata->base + RTC_IMSC);
+
+        alarm->pending = readl(ldata->base + RTC_RIS) & RTC_BIT_AI;
+        alarm->enabled = readl(ldata->base + RTC_IMSC) & RTC_BIT_AI;
 
         return 0;
 }
@@ -96,22 +278,71 @@ static int pl031_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
 {
         struct pl031_local *ldata = dev_get_drvdata(dev);
         unsigned long time;
+        int ret;
+
+        /* At the moment, we can only deal with non-wildcarded alarm times. */
+        ret = rtc_valid_tm(&alarm->time);
+        if (ret == 0) {
+                ret = rtc_tm_to_time(&alarm->time, &time);
+                if (ret == 0) {
+                        writel(time, ldata->base + RTC_MR);
+                        pl031_alarm_irq_enable(dev, alarm->enabled);
+                }
+        }
+
+        return ret;
+}
+
+/* Periodic interrupt is only available in ST variants. */
+static int pl031_irq_set_state(struct device *dev, int enabled)
+{
+        struct pl031_local *ldata = dev_get_drvdata(dev);
+
+        if (enabled == 1) {
+                /* Clear any pending timer interrupt. */
+                writel(RTC_BIT_PI, ldata->base + RTC_ICR);
+
+                writel(readl(ldata->base + RTC_IMSC) | RTC_BIT_PI,
+                        ldata->base + RTC_IMSC);
 
-        rtc_tm_to_time(&alarm->time, &time);
+                /* Now start the timer */
+                writel(readl(ldata->base + RTC_TCR) | RTC_TCR_EN,
+                        ldata->base + RTC_TCR);
 
-        writel(time, ldata->base + RTC_MR);
-        writel(!alarm->enabled, ldata->base + RTC_MIS);
+        } else {
+                writel(readl(ldata->base + RTC_IMSC) & (~RTC_BIT_PI),
+                        ldata->base + RTC_IMSC);
+
+                /* Also stop the timer */
+                writel(readl(ldata->base + RTC_TCR) & (~RTC_TCR_EN),
+                        ldata->base + RTC_TCR);
+        }
+        /* Wait at least 1 RTC32 clock cycle to ensure next access
+         * to RTC_TCR will succeed.
+         */
+        udelay(40);
 
         return 0;
 }
 
-static const struct rtc_class_ops pl031_ops = {
-        .ioctl = pl031_ioctl,
-        .read_time = pl031_read_time,
-        .set_time = pl031_set_time,
-        .read_alarm = pl031_read_alarm,
-        .set_alarm = pl031_set_alarm,
-};
+static int pl031_irq_set_freq(struct device *dev, int freq)
+{
+        struct pl031_local *ldata = dev_get_drvdata(dev);
+
+        /* Cant set timer if it is already enabled */
+        if (readl(ldata->base + RTC_TCR) & RTC_TCR_EN) {
+                dev_err(dev, "can't change frequency while timer enabled\n");
+                return -EINVAL;
+        }
+
+        /* If self start bit in RTC_TCR is set timer will start here,
+         * but we never set that bit. Instead we start the timer when
+         * set_state is called with enabled == 1.
+         */
+        writel(RTC_TIMER_FREQ / freq, ldata->base + RTC_TLR);
+
+        return 0;
+}
 
 static int pl031_remove(struct amba_device *adev)
 {
@@ -131,18 +362,20 @@ static int pl031_probe(struct amba_device *adev, struct amba_id *id)
 {
         int ret;
         struct pl031_local *ldata;
+        struct rtc_class_ops *ops = id->data;
 
         ret = amba_request_regions(adev, NULL);
         if (ret)
                 goto err_req;
 
-        ldata = kmalloc(sizeof(struct pl031_local), GFP_KERNEL);
+        ldata = kzalloc(sizeof(struct pl031_local), GFP_KERNEL);
         if (!ldata) {
                 ret = -ENOMEM;
                 goto out;
         }
 
         ldata->base = ioremap(adev->res.start, resource_size(&adev->res));
+
         if (!ldata->base) {
                 ret = -ENOMEM;
                 goto out_no_remap;
@@ -150,24 +383,36 @@ static int pl031_probe(struct amba_device *adev, struct amba_id *id)
 
         amba_set_drvdata(adev, ldata);
 
-        if (request_irq(adev->irq[0], pl031_interrupt, IRQF_DISABLED,
-                        "rtc-pl031", ldata->rtc)) {
-                ret = -EIO;
-                goto out_no_irq;
-        }
+        ldata->hw_designer = amba_manf(adev);
+        ldata->hw_revision = amba_rev(adev);
+
+        dev_dbg(&adev->dev, "designer ID = 0x%02x\n", ldata->hw_designer);
+        dev_dbg(&adev->dev, "revision = 0x%01x\n", ldata->hw_revision);
 
-        ldata->rtc = rtc_device_register("pl031", &adev->dev, &pl031_ops,
-                                         THIS_MODULE);
+        /* Enable the clockwatch on ST Variants */
+        if ((ldata->hw_designer == AMBA_VENDOR_ST) &&
+            (ldata->hw_revision > 1))
+                writel(readl(ldata->base + RTC_CR) | RTC_CR_CWEN,
+                       ldata->base + RTC_CR);
+
+        ldata->rtc = rtc_device_register("pl031", &adev->dev, ops,
+                                        THIS_MODULE);
         if (IS_ERR(ldata->rtc)) {
                 ret = PTR_ERR(ldata->rtc);
                 goto out_no_rtc;
         }
 
+        if (request_irq(adev->irq[0], pl031_interrupt,
+                        IRQF_DISABLED | IRQF_SHARED, "rtc-pl031", ldata)) {
+                ret = -EIO;
+                goto out_no_irq;
+        }
+
         return 0;
 
-out_no_rtc:
-        free_irq(adev->irq[0], ldata->rtc);
 out_no_irq:
+        rtc_device_unregister(ldata->rtc);
+out_no_rtc:
         iounmap(ldata->base);
         amba_set_drvdata(adev, NULL);
 out_no_remap:
@@ -175,13 +420,57 @@ out_no_remap:
 out:
         amba_release_regions(adev);
 err_req:
+
         return ret;
 }
 
+/* Operations for the original ARM version */
+static struct rtc_class_ops arm_pl031_ops = {
+        .read_time = pl031_read_time,
+        .set_time = pl031_set_time,
+        .read_alarm = pl031_read_alarm,
+        .set_alarm = pl031_set_alarm,
+        .alarm_irq_enable = pl031_alarm_irq_enable,
+};
+
+/* The First ST derivative */
+static struct rtc_class_ops stv1_pl031_ops = {
+        .read_time = pl031_read_time,
+        .set_time = pl031_set_time,
+        .read_alarm = pl031_read_alarm,
+        .set_alarm = pl031_set_alarm,
+        .alarm_irq_enable = pl031_alarm_irq_enable,
+        .irq_set_state = pl031_irq_set_state,
+        .irq_set_freq = pl031_irq_set_freq,
+};
+
+/* And the second ST derivative */
+static struct rtc_class_ops stv2_pl031_ops = {
+        .read_time = pl031_stv2_read_time,
+        .set_time = pl031_stv2_set_time,
+        .read_alarm = pl031_stv2_read_alarm,
+        .set_alarm = pl031_stv2_set_alarm,
+        .alarm_irq_enable = pl031_alarm_irq_enable,
+        .irq_set_state = pl031_irq_set_state,
+        .irq_set_freq = pl031_irq_set_freq,
+};
+
 static struct amba_id pl031_ids[] __initdata = {
         {
                 .id = 0x00041031,
                 .mask = 0x000fffff,
+                .data = &arm_pl031_ops,
+        },
+        /* ST Micro variants */
+        {
+                .id = 0x00180031,
+                .mask = 0x00ffffff,
+                .data = &stv1_pl031_ops,
+        },
+        {
+                .id = 0x00280031,
+                .mask = 0x00ffffff,
+                .data = &stv2_pl031_ops,
         },
         {0, 0},
 };
diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index ef7adc8135dd..ce6c35333ff7 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -71,6 +71,7 @@ struct uart_amba_port {
         unsigned int            im;     /* interrupt mask */
         unsigned int            old_status;
         unsigned int            ifls;   /* vendor-specific */
+        bool                    autorts;
 };
 
 /* There is by now at least one vendor with differing details, so handle it */
@@ -308,6 +309,11 @@ static void pl011_set_mctrl(struct uart_port *port, unsigned int mctrl)
         TIOCMBIT(TIOCM_OUT1, UART011_CR_OUT1);
         TIOCMBIT(TIOCM_OUT2, UART011_CR_OUT2);
         TIOCMBIT(TIOCM_LOOP, UART011_CR_LBE);
+
+        if (uap->autorts) {
+                /* We need to disable auto-RTS if we want to turn RTS off */
+                TIOCMBIT(TIOCM_RTS, UART011_CR_RTSEN);
+        }
 #undef TIOCMBIT
 
         writew(cr, uap->port.membase + UART011_CR);
@@ -437,6 +443,7 @@ static void pl011_shutdown(struct uart_port *port)
         /*
          * disable the port
          */
+        uap->autorts = false;
         writew(UART01x_CR_UARTEN | UART011_CR_TXE, uap->port.membase + UART011_CR);
 
         /*
@@ -456,6 +463,7 @@ static void
 pl011_set_termios(struct uart_port *port, struct ktermios *termios,
                      struct ktermios *old)
 {
+        struct uart_amba_port *uap = (struct uart_amba_port *)port;
         unsigned int lcr_h, old_cr;
         unsigned long flags;
         unsigned int baud, quot;
@@ -532,6 +540,17 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios,
         old_cr = readw(port->membase + UART011_CR);
         writew(0, port->membase + UART011_CR);
 
+        if (termios->c_cflag & CRTSCTS) {
+                if (old_cr & UART011_CR_RTS)
+                        old_cr |= UART011_CR_RTSEN;
+
+                old_cr |= UART011_CR_CTSEN;
+                uap->autorts = true;
+        } else {
+                old_cr &= ~(UART011_CR_CTSEN | UART011_CR_RTSEN);
+                uap->autorts = false;
+        }
+
         /* Set baud rate */
         writew(quot & 0x3f, port->membase + UART011_FBRD);
         writew(quot >> 6, port->membase + UART011_IBRD);
diff --git a/drivers/spi/amba-pl022.c b/drivers/spi/amba-pl022.c
index ff5bbb9c43c9..9aeb68113100 100644
--- a/drivers/spi/amba-pl022.c
+++ b/drivers/spi/amba-pl022.c
@@ -363,6 +363,7 @@ struct pl022 {
         void                            *rx_end;
         enum ssp_reading                read;
         enum ssp_writing                write;
+        u32                             exp_fifo_level;
 };
 
 /**
@@ -501,6 +502,9 @@ static int flush(struct pl022 *pl022)
                 while (readw(SSP_SR(pl022->virtbase)) & SSP_SR_MASK_RNE)
                         readw(SSP_DR(pl022->virtbase));
         } while ((readw(SSP_SR(pl022->virtbase)) & SSP_SR_MASK_BSY) && limit--);
+
+        pl022->exp_fifo_level = 0;
+
         return limit;
 }
 
@@ -583,10 +587,9 @@ static void readwriter(struct pl022 *pl022)
          * errons in 8bit wide transfers on ARM variants (just 8 words
          * FIFO, means only 8x8 = 64 bits in FIFO) at least.
          *
-         * FIXME: currently we have no logic to account for this.
-         * perhaps there is even something broken in HW regarding
-         * 8bit transfers (it doesn't fail on 16bit) so this needs
-         * more investigation...
+         * To prevent this issue, the TX FIFO is only filled to the
+         * unused RX FIFO fill length, regardless of what the TX
+         * FIFO status flag indicates.
          */
         dev_dbg(&pl022->adev->dev,
                 "%s, rx: %p, rxend: %p, tx: %p, txend: %p\n",
@@ -613,11 +616,12 @@ static void readwriter(struct pl022 *pl022)
                         break;
                 }
                 pl022->rx += (pl022->cur_chip->n_bytes);
+                pl022->exp_fifo_level--;
         }
         /*
-         * Write as much as you can, while keeping an eye on the RX FIFO!
+         * Write as much as possible up to the RX FIFO size
          */
-        while ((readw(SSP_SR(pl022->virtbase)) & SSP_SR_MASK_TNF)
+        while ((pl022->exp_fifo_level < pl022->vendor->fifodepth)
                && (pl022->tx < pl022->tx_end)) {
                 switch (pl022->write) {
                 case WRITING_NULL:
@@ -634,6 +638,7 @@ static void readwriter(struct pl022 *pl022)
                         break;
                 }
                 pl022->tx += (pl022->cur_chip->n_bytes);
+                pl022->exp_fifo_level++;
                 /*
                  * This inner reader takes care of things appearing in the RX
                  * FIFO as we're transmitting. This will happen a lot since the
@@ -660,6 +665,7 @@ static void readwriter(struct pl022 *pl022)
                                 break;
                         }
                         pl022->rx += (pl022->cur_chip->n_bytes);
+                        pl022->exp_fifo_level--;
                 }
         }
         /*
diff --git a/drivers/watchdog/pnx4008_wdt.c b/drivers/watchdog/pnx4008_wdt.c
index 430a5848a9a5..c7a9479934af 100644
--- a/drivers/watchdog/pnx4008_wdt.c
+++ b/drivers/watchdog/pnx4008_wdt.c
@@ -96,9 +96,6 @@ static void wdt_enable(void)
 {
         spin_lock(&io_lock);
 
-        if (wdt_clk)
-                clk_set_rate(wdt_clk, 1);
-
         /* stop counter, initiate counter reset */
         __raw_writel(RESET_COUNT, WDTIM_CTRL(wdt_base));
         /*wait for reset to complete. 100% guarantee event */
@@ -125,19 +122,25 @@ static void wdt_disable(void)
         spin_lock(&io_lock);
 
         __raw_writel(0, WDTIM_CTRL(wdt_base));  /*stop counter */
-        if (wdt_clk)
-                clk_set_rate(wdt_clk, 0);
 
         spin_unlock(&io_lock);
 }
 
 static int pnx4008_wdt_open(struct inode *inode, struct file *file)
 {
+        int ret;
+
         if (test_and_set_bit(WDT_IN_USE, &wdt_status))
                 return -EBUSY;
 
         clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
 
+        ret = clk_enable(wdt_clk);
+        if (ret) {
+                clear_bit(WDT_IN_USE, &wdt_status);
+                return ret;
+        }
+
         wdt_enable();
 
         return nonseekable_open(inode, file);
@@ -225,6 +228,7 @@ static int pnx4008_wdt_release(struct inode *inode, struct file *file)
                 printk(KERN_WARNING "WATCHDOG: Device closed unexpectdly\n");
 
         wdt_disable();
+        clk_disable(wdt_clk);
         clear_bit(WDT_IN_USE, &wdt_status);
         clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
 
@@ -273,25 +277,33 @@ static int __devinit pnx4008_wdt_probe(struct platform_device *pdev)
         }
         wdt_base = (void __iomem *)IO_ADDRESS(res->start);
 
-        wdt_clk = clk_get(&pdev->dev, "wdt_ck");
+        wdt_clk = clk_get(&pdev->dev, NULL);
         if (IS_ERR(wdt_clk)) {
                 ret = PTR_ERR(wdt_clk);
                 release_resource(wdt_mem);
                 kfree(wdt_mem);
                 goto out;
-        } else
-                clk_set_rate(wdt_clk, 1);
+        }
+
+        ret = clk_enable(wdt_clk);
+        if (ret) {
+                release_resource(wdt_mem);
+                kfree(wdt_mem);
+                goto out;
+        }
 
         ret = misc_register(&pnx4008_wdt_miscdev);
         if (ret < 0) {
                 printk(KERN_ERR MODULE_NAME "cannot register misc device\n");
                 release_resource(wdt_mem);
                 kfree(wdt_mem);
-                clk_set_rate(wdt_clk, 0);
+                clk_disable(wdt_clk);
+                clk_put(wdt_clk);
         } else {
                 boot_status = (__raw_readl(WDTIM_RES(wdt_base)) & WDOG_RESET) ?
                     WDIOF_CARDRESET : 0;
                 wdt_disable();          /*disable for now */
+                clk_disable(wdt_clk);
                 set_bit(WDT_DEVICE_INITED, &wdt_status);
         }
 
@@ -302,11 +314,10 @@ out:
 static int __devexit pnx4008_wdt_remove(struct platform_device *pdev)
 {
         misc_deregister(&pnx4008_wdt_miscdev);
-        if (wdt_clk) {
-                clk_set_rate(wdt_clk, 0);
-                clk_put(wdt_clk);
-                wdt_clk = NULL;
-        }
+
+        clk_disable(wdt_clk);
+        clk_put(wdt_clk);
+
         if (wdt_mem) {
                 release_resource(wdt_mem);
                 kfree(wdt_mem);