i2c-eg20t : Support Combined R/W transfer mode

Currently, Combined R/W transfer mode is not supported.
This patch enables Combined R/W transfer mode.
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

drivers/i2c/busses/i2c-eg20t.c

@@ -673,7 +673,8 @@ static s32 pch_i2c_xfer(struct i2c_adapter *i2c_adap,
 	/* transfer not completed */
 	adap->pch_i2c_xfer_in_progress = true;
 
-	pmsg = &msgs[0];
+	for (i = 0; i < num; i++) {
+		pmsg = &msgs[i];
 		pmsg->flags |= adap->pch_buff_mode_en;
 		status = pmsg->flags;
 		pch_dbg(adap,
@@ -684,15 +685,15 @@ static s32 pch_i2c_xfer(struct i2c_adapter *i2c_adap,
 		/* calculate actual message length excluding
 		 * the sub address fields */
 		msglen = (pmsg->len) - (subaddrlen + 1);
-	if (status & (I2C_M_RD)) {
-		pch_dbg(adap, "invoking pch_i2c_readbytes\n");
+
+		if ((status & (I2C_M_RD)) != false) {
 			ret = pch_i2c_readbytes(i2c_adap, pmsg, (i + 1 == num),
 						(i == 0));
 		} else {
-		pch_dbg(adap, "invoking pch_i2c_writebytes\n");
 			ret = pch_i2c_writebytes(i2c_adap, pmsg, (i + 1 == num),
 						 (i == 0));
 		}
+	}
 
 	adap->pch_i2c_xfer_in_progress = false;	/* transfer completed */