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i2c: rcar: refactor setup of a msg 

We want to reuse this function later.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Wolfram Sang 2015-09-03 22:20:08 +02:00 committed by Wolfram Sang
parent 738206dec9
commit 344beeb23b
1 changed files with 9 additions and 6 deletions
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15
drivers/i2c/busses/i2c-rcar.c
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@ -106,7 +106,8 @@ enum rcar_i2c_type {
struct rcar_i2c_priv {
void __iomem *io;
struct i2c_adapter adap;
struct i2c_msg *msg;
struct i2c_msg *msg;
int msgs_left;
struct clk *clk;
wait_queue_head_t wait;
@ -254,6 +255,11 @@ static void rcar_i2c_prepare_msg(struct rcar_i2c_priv *priv)
{
int read = !!rcar_i2c_is_recv(priv);
priv->pos = 0;
priv->flags = 0;
if (priv->msgs_left == 1)
rcar_i2c_flags_set(priv, ID_LAST_MSG);
rcar_i2c_write(priv, ICMAR, (priv->msg->addr << 1) | read);
rcar_i2c_write(priv, ICMSR, 0);
rcar_i2c_write(priv, ICMCR, RCAR_BUS_PHASE_START);
@ -498,11 +504,8 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap,
}
/* init each data */
priv->msg = &msgs[i];
priv->pos = 0;
priv->flags = 0;
if (i == num - 1)
rcar_i2c_flags_set(priv, ID_LAST_MSG);
priv->msg = &msgs[i];
priv->msgs_left = num - i;
rcar_i2c_prepare_msg(priv);