From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Remove the seperate functions and use designated constants. As readable
but less overhead.
Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
---
drivers/i2c/busses/i2c-rcar.c | 37 ++++++++++---------------------------
1 file changed, 10 insertions(+), 27 deletions(-)
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index 88efbf29a182..e0cdab488cc5 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -79,11 +79,9 @@
#define MATE (1 << 0) /* address sent irq en */
-enum {
- RCAR_BUS_PHASE_ADDR,
- RCAR_BUS_PHASE_DATA,
- RCAR_BUS_PHASE_STOP,
-};
+#define RCAR_BUS_PHASE_START (MDBS | MIE | ESG)
+#define RCAR_BUS_PHASE_DATA (MDBS | MIE)
+#define RCAR_BUS_PHASE_STOP (MDBS | MIE | FSB)
enum {
RCAR_IRQ_CLOSE,
@@ -204,21 +202,6 @@ static int rcar_i2c_bus_barrier(struct rcar_i2c_priv *priv)
return -EBUSY;
}
-static void rcar_i2c_bus_phase(struct rcar_i2c_priv *priv, int phase)
-{
- switch (phase) {
- case RCAR_BUS_PHASE_ADDR:
- rcar_i2c_write(priv, ICMCR, MDBS | MIE | ESG);
- break;
- case RCAR_BUS_PHASE_DATA:
- rcar_i2c_write(priv, ICMCR, MDBS | MIE);
- break;
- case RCAR_BUS_PHASE_STOP:
- rcar_i2c_write(priv, ICMCR, MDBS | MIE | FSB);
- break;
- }
-}
-
/*
* clock function
*/
@@ -328,7 +311,7 @@ static int rcar_i2c_recv(struct rcar_i2c_priv *priv)
{
rcar_i2c_set_addr(priv, 1);
rcar_i2c_status_clear(priv);
- rcar_i2c_bus_phase(priv, RCAR_BUS_PHASE_ADDR);
+ rcar_i2c_write(priv, ICMCR, RCAR_BUS_PHASE_START);
rcar_i2c_irq_mask(priv, RCAR_IRQ_OPEN_FOR_RECV);
return 0;
@@ -347,7 +330,7 @@ static int rcar_i2c_send(struct rcar_i2c_priv *priv)
rcar_i2c_set_addr(priv, 0);
rcar_i2c_status_clear(priv);
- rcar_i2c_bus_phase(priv, RCAR_BUS_PHASE_ADDR);
+ rcar_i2c_write(priv, ICMCR, RCAR_BUS_PHASE_START);
rcar_i2c_irq_mask(priv, RCAR_IRQ_OPEN_FOR_SEND);
return 0;
@@ -376,7 +359,7 @@ static int rcar_i2c_irq_send(struct rcar_i2c_priv *priv, u32 msr)
* goto data phase.
*/
if (msr & MAT)
- rcar_i2c_bus_phase(priv, RCAR_BUS_PHASE_DATA);
+ rcar_i2c_write(priv, ICMCR, RCAR_BUS_PHASE_DATA);
if (priv->pos < msg->len) {
/*
@@ -404,7 +387,7 @@ static int rcar_i2c_irq_send(struct rcar_i2c_priv *priv, u32 msr)
* prepare stop condition here.
* ID_DONE will be set on STOP irq.
*/
- rcar_i2c_bus_phase(priv, RCAR_BUS_PHASE_STOP);
+ rcar_i2c_write(priv, ICMCR, RCAR_BUS_PHASE_STOP);
else
/*
* If current msg is _NOT_ last msg,
@@ -452,9 +435,9 @@ static int rcar_i2c_irq_recv(struct rcar_i2c_priv *priv, u32 msr)
* otherwise, go to DATA phase.
*/
if (priv->pos + 1 >= msg->len)
- rcar_i2c_bus_phase(priv, RCAR_BUS_PHASE_STOP);
+ rcar_i2c_write(priv, ICMCR, RCAR_BUS_PHASE_STOP);
else
- rcar_i2c_bus_phase(priv, RCAR_BUS_PHASE_DATA);
+ rcar_i2c_write(priv, ICMCR, RCAR_BUS_PHASE_DATA);
rcar_i2c_recv_restart(priv);
@@ -502,7 +485,7 @@ static irqreturn_t rcar_i2c_irq(int irq, void *ptr)
dev_dbg(dev, "Nack\n");
/* go to stop phase */
- rcar_i2c_bus_phase(priv, RCAR_BUS_PHASE_STOP);
+ rcar_i2c_write(priv, ICMCR, RCAR_BUS_PHASE_STOP);
rcar_i2c_irq_mask(priv, RCAR_IRQ_OPEN_FOR_STOP);
rcar_i2c_flags_set(priv, ID_NACK);
goto out;
--
2.0.0.rc2
--
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