Merge branch 'master' of git://git.denx.de/u-boot-i2c

1 files changed, 11 insertions, 31 deletions

diff --git a/drivers/i2c/omap24xx_i2c.c b/drivers/i2c/omap24xx_i2c.c
index 215be34..71251d8 100644
--- a/drivers/i2c/omap24xx_i2c.c
+++ b/drivers/i2c/omap24xx_i2c.c
@@ -321,43 +321,23 @@ int i2c_probe (uchar chip)
 	/* wait until bus not busy */
 	wait_for_bb ();
 
-	/* try to read one byte */
+	/* try to write one byte */
 	writew (1, &i2c_base->cnt);
 	/* set slave address */
 	writew (chip, &i2c_base->sa);
 	/* stop bit needed here */
-	writew (I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_STP, &i2c_base->con);
+	writew(I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_TRX |
+	       I2C_CON_STP, &i2c_base->con);
 
-	while (1) {
-		status = wait_for_pin();
-		if (status == 0 || status & I2C_STAT_AL) {
-			res = 1;
-			goto probe_exit;
-		}
-		if (status & I2C_STAT_NACK) {
-			res = 1;
-			writew(0xff, &i2c_base->stat);
-			writew (readw (&i2c_base->con) | I2C_CON_STP, &i2c_base->con);
-			wait_for_bb ();
-			break;
-		}
-		if (status & I2C_STAT_ARDY) {
-			writew(I2C_STAT_ARDY, &i2c_base->stat);
-			break;
-		}
-		if (status & I2C_STAT_RRDY) {
-			res = 0;
-#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) || \
-    defined(CONFIG_OMAP44XX)
-			readb(&i2c_base->data);
-#else
-			readw(&i2c_base->data);
-#endif
-			writew(I2C_STAT_RRDY, &i2c_base->stat);
-		}
-	}
+	status = wait_for_pin();
+
+	/* check for ACK (!NAK) */
+	if (!(status & I2C_STAT_NACK))
+		res = 0;
+
+	/* abort transfer (force idle state) */
+	writew(0, &i2c_base->con);
 
-probe_exit:
 	flush_fifo();
 	writew (0, &i2c_base->cnt); /* don't allow any more data in...we don't want it.*/
 	writew(0xFFFF, &i2c_base->stat);