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

[sfrench/cifs-2.6.git] / drivers / i2c / busses / i2c-pxa.c

diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index 14e83d0aac8c8fcc94372710f53067bd5a4ddad9..873544ab598e9b92695d9c9e6aa3ed0f09a6161b 100644 (file)
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -539,6 +539,18 @@ static inline void i2c_pxa_start_message(struct pxa_i2c *i2c)
        writel(icr | ICR_START | ICR_TB, _ICR(i2c));
 }
 
+static inline void i2c_pxa_stop_message(struct pxa_i2c *i2c)
+{
+       u32 icr;
+
+       /*
+        * Clear the STOP and ACK flags
+        */
+       icr = readl(_ICR(i2c));
+       icr &= ~(ICR_STOP | ICR_ACKNAK);
+       writel(icr, _IRC(i2c));
+}
+
 /*
  * We are protected by the adapter bus mutex.
  */
@@ -581,6 +593,7 @@ static int i2c_pxa_do_xfer(struct pxa_i2c *i2c, struct i2c_msg *msg, int num)
         * The rest of the processing occurs in the interrupt handler.
         */
        timeout = wait_event_timeout(i2c->wait, i2c->msg_num == 0, HZ * 5);
+       i2c_pxa_stop_message(i2c);
 
        /*
         * We place the return code in i2c->msg_idx.
@@ -825,7 +838,7 @@ static const struct i2c_algorithm i2c_pxa_algorithm = {
 };
 
 static struct pxa_i2c i2c_pxa = {
-       .lock   = SPIN_LOCK_UNLOCKED,
+       .lock   = __SPIN_LOCK_UNLOCKED(i2c_pxa.lock),
        .adap   = {
                .owner          = THIS_MODULE,
                .algo           = &i2c_pxa_algorithm,
@@ -839,9 +852,7 @@ static int i2c_pxa_probe(struct platform_device *dev)
 {
        struct pxa_i2c *i2c = &i2c_pxa;
        struct resource *res;
-#ifdef CONFIG_I2C_PXA_SLAVE
        struct i2c_pxa_platform_data *plat = dev->dev.platform_data;
-#endif
        int ret;
        int irq;
 
@@ -889,14 +900,14 @@ static int i2c_pxa_probe(struct platform_device *dev)
                pxa_gpio_mode(GPIO117_I2CSCL_MD);
                pxa_gpio_mode(GPIO118_I2CSDA_MD);
 #endif
-               pxa_set_cken(CKEN14_I2C, 1);
+               pxa_set_cken(CKEN_I2C, 1);
                break;
 #ifdef CONFIG_PXA27x
        case 1:
                local_irq_disable();
                PCFR |= PCFR_PI2CEN;
                local_irq_enable();
-               pxa_set_cken(CKEN15_PWRI2C, 1);
+               pxa_set_cken(CKEN_PWRI2C, 1);
 #endif
        }
 
@@ -911,6 +922,10 @@ static int i2c_pxa_probe(struct platform_device *dev)
        i2c->adap.algo_data = i2c;
        i2c->adap.dev.parent = &dev->dev;
 
+       if (plat) {
+               i2c->adap.class = plat->class;
+       }
+
        ret = i2c_add_adapter(&i2c->adap);
        if (ret < 0) {
                printk(KERN_INFO "I2C: Failed to add bus\n");
@@ -933,11 +948,11 @@ eadapt:
 ereqirq:
        switch (dev->id) {
        case 0:
-               pxa_set_cken(CKEN14_I2C, 0);
+               pxa_set_cken(CKEN_I2C, 0);
                break;
 #ifdef CONFIG_PXA27x
        case 1:
-               pxa_set_cken(CKEN15_PWRI2C, 0);
+               pxa_set_cken(CKEN_PWRI2C, 0);
                local_irq_disable();
                PCFR &= ~PCFR_PI2CEN;
                local_irq_enable();
@@ -960,11 +975,11 @@ static int i2c_pxa_remove(struct platform_device *dev)
        free_irq(i2c->irq, i2c);
        switch (dev->id) {
        case 0:
-               pxa_set_cken(CKEN14_I2C, 0);
+               pxa_set_cken(CKEN_I2C, 0);
                break;
 #ifdef CONFIG_PXA27x
        case 1:
-               pxa_set_cken(CKEN15_PWRI2C, 0);
+               pxa_set_cken(CKEN_PWRI2C, 0);
                local_irq_disable();
                PCFR &= ~PCFR_PI2CEN;
                local_irq_enable();