i2c: rcar_i2c: Set the slave address from rcar_i2c_xfer

It needs to be done for both reads and writes, so do it at rcar_i2c_xfer
to avoid duplication.

Signed-off-by: Ismael Luceno <ismael.luceno@silicon-gears.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

diff --git a/drivers/i2c/rcar_i2c.c b/drivers/i2c/rcar_i2c.c
index 9223eae..78ef8ac 100644 (file)
--- a/drivers/i2c/rcar_i2c.c
+++ b/drivers/i2c/rcar_i2c.c
@@ -158,10 +158,6 @@ static int rcar_i2c_read_common(struct udevice *dev, struct i2c_msg *msg)
        u32 icmcr = RCAR_I2C_ICMCR_MDBS | RCAR_I2C_ICMCR_MIE;
        int i, ret = -EREMOTEIO;
 
-       ret = rcar_i2c_set_addr(dev, msg->addr, 1);
-       if (ret)
-               return ret;
-
        for (i = 0; i < msg->len; i++) {
                if (msg->len - 1 == i)
                        icmcr |= RCAR_I2C_ICMCR_FSB;
@@ -188,10 +184,6 @@ static int rcar_i2c_write_common(struct udevice *dev, struct i2c_msg *msg)
        u32 icmcr = RCAR_I2C_ICMCR_MDBS | RCAR_I2C_ICMCR_MIE;
        int i, ret = -EREMOTEIO;
 
-       ret = rcar_i2c_set_addr(dev, msg->addr, 0);
-       if (ret)
-               return ret;
-
        for (i = 0; i < msg->len; i++) {
                writel(msg->buf[i], priv->base + RCAR_I2C_ICRXD_ICTXD);
                writel(icmcr, priv->base + RCAR_I2C_ICMCR);
@@ -215,6 +207,10 @@ static int rcar_i2c_xfer(struct udevice *dev, struct i2c_msg *msg, int nmsgs)
        int ret;
 
        for (; nmsgs > 0; nmsgs--, msg++) {
+               ret = rcar_i2c_set_addr(dev, msg->addr, 1);
+               if (ret)
+                       return ret;
+
                if (msg->flags & I2C_M_RD)
                        ret = rcar_i2c_read_common(dev, msg);
                else
@@ -224,7 +220,7 @@ static int rcar_i2c_xfer(struct udevice *dev, struct i2c_msg *msg, int nmsgs)
                        return ret;
        }
 
-       return ret;
+       return 0;
 }
 
 static int rcar_i2c_probe_chip(struct udevice *dev, uint addr, uint flags)