+static int poll_dte(struct sh_mobile_i2c_data *pd)
+{
+ int i;
+
+ for (i = 1000; i; i--) {
+ u_int8_t val = iic_rd(pd, ICSR);
+
+ if (val & ICSR_DTE)
+ break;
+
+ if (val & ICSR_TACK)
+ return -EIO;
+
+ udelay(10);
+ }
+
+ if (!i) {
+ dev_warn(pd->dev, "Timeout polling for DTE!\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+static int poll_busy(struct sh_mobile_i2c_data *pd)
+{
+ int i;
+
+ for (i = 1000; i; i--) {
+ u_int8_t val = iic_rd(pd, ICSR);
+
+ dev_dbg(pd->dev, "val 0x%02x pd->sr 0x%02x\n", val, pd->sr);
+
+ /* the interrupt handler may wake us up before the
+ * transfer is finished, so poll the hardware
+ * until we're done.
+ */
+ if (!(val & ICSR_BUSY)) {
+ /* handle missing acknowledge and arbitration lost */
+ if ((val | pd->sr) & (ICSR_TACK | ICSR_AL))
+ return -EIO;
+ break;
+ }
+
+ udelay(10);
+ }
+
+ if (!i) {
+ dev_err(pd->dev, "Polling timed out\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+