diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-rcar.c | 30 |
1 files changed, 5 insertions, 25 deletions
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c index 828b519..42005ccd 100644 --- a/drivers/i2c/busses/i2c-rcar.c +++ b/drivers/i2c/busses/i2c-rcar.c @@ -155,11 +155,6 @@ static void rcar_i2c_init(struct rcar_i2c_priv *priv) rcar_i2c_write(priv, ICMAR, 0); } -static void rcar_i2c_set_addr(struct rcar_i2c_priv *priv, u32 recv) -{ - rcar_i2c_write(priv, ICMAR, (priv->msg->addr << 1) | recv); -} - /* * bus control functions */ @@ -279,25 +274,14 @@ static void rcar_i2c_status_bit_clear(struct rcar_i2c_priv *priv, u32 bit) rcar_i2c_write(priv, ICMSR, ~bit); } -/* - * recv/send functions - */ -static int rcar_i2c_recv(struct rcar_i2c_priv *priv) +static int rcar_i2c_prepare_msg(struct rcar_i2c_priv *priv) { - rcar_i2c_set_addr(priv, 1); - rcar_i2c_status_clear(priv); - rcar_i2c_write(priv, ICMCR, RCAR_BUS_PHASE_START); - rcar_i2c_write(priv, ICMIER, RCAR_IRQ_RECV); - - return 0; -} + int read = !!rcar_i2c_is_recv(priv); -static int rcar_i2c_send(struct rcar_i2c_priv *priv) -{ - rcar_i2c_set_addr(priv, 0); + rcar_i2c_write(priv, ICMAR, (priv->msg->addr << 1) | read); rcar_i2c_status_clear(priv); rcar_i2c_write(priv, ICMCR, RCAR_BUS_PHASE_START); - rcar_i2c_write(priv, ICMIER, RCAR_IRQ_SEND); + rcar_i2c_write(priv, ICMIER, read ? RCAR_IRQ_RECV : RCAR_IRQ_SEND); return 0; } @@ -520,11 +504,7 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap, if (priv->msg == &msgs[num - 1]) rcar_i2c_flags_set(priv, ID_LAST_MSG); - /* start send/recv */ - if (rcar_i2c_is_recv(priv)) - ret = rcar_i2c_recv(priv); - else - ret = rcar_i2c_send(priv); + ret = rcar_i2c_prepare_msg(priv); spin_unlock_irqrestore(&priv->lock, flags); /*-------------- spin unlock -----------------*/ |
