Merge branch 'topic/soundcore-preclaim' into for-linus

[pandora-kernel.git] / drivers / i2c / busses / i2c-omap.c

diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index d258b02..827da08 100644 (file)
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -674,7 +674,14 @@ omap_i2c_isr(int this_irq, void *dev_id)
 
                err = 0;
 complete:
-               omap_i2c_write_reg(dev, OMAP_I2C_STAT_REG, stat);
+               /*
+                * Ack the stat in one go, but [R/X]DR and [R/X]RDY should be
+                * acked after the data operation is complete.
+                * Ref: TRM SWPU114Q Figure 18-31
+                */
+               omap_i2c_write_reg(dev, OMAP_I2C_STAT_REG, stat &
+                               ~(OMAP_I2C_STAT_RRDY | OMAP_I2C_STAT_RDR |
+                               OMAP_I2C_STAT_XRDY | OMAP_I2C_STAT_XDR));
 
                if (stat & OMAP_I2C_STAT_NACK) {
                        err |= OMAP_I2C_STAT_NACK;
@@ -687,6 +694,9 @@ complete:
                }
                if (stat & (OMAP_I2C_STAT_ARDY | OMAP_I2C_STAT_NACK |
                                        OMAP_I2C_STAT_AL)) {
+                       omap_i2c_ack_stat(dev, stat &
+                               (OMAP_I2C_STAT_RRDY | OMAP_I2C_STAT_RDR |
+                               OMAP_I2C_STAT_XRDY | OMAP_I2C_STAT_XDR));
                        omap_i2c_complete_cmd(dev, err);
                        return IRQ_HANDLED;
                }
@@ -774,7 +784,7 @@ complete:
                                 * memory to the I2C interface.
                                 */
 
-                               if (cpu_is_omap34xx()) {
+                               if (dev->rev <= OMAP_I2C_REV_ON_3430) {
                                                while (!(stat & OMAP_I2C_STAT_XUDF)) {
                                                        if (stat & (OMAP_I2C_STAT_NACK | OMAP_I2C_STAT_AL)) {
                                                                omap_i2c_ack_stat(dev, stat & (OMAP_I2C_STAT_XRDY | OMAP_I2C_STAT_XDR));