diff options
| author | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2015-12-23 17:56:33 +0100 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2016-01-02 22:11:21 +0100 |
| commit | 42c0783b89ae4d41ab65e8b0f7ed8cf52e711554 (patch) | |
| tree | d9fcec7400a0c448b8353aa4995abf95fbf3e8cf /drivers/i2c/busses/i2c-rcar.c | |
| parent | 0c739738a0eea868655ef26263d5350e6ab8cc69 (diff) | |
i2c: rcar: remove macros dealing with flags
These macros don't really hide complexity, but C idioms. Removing them
makes the code easier to read IMO and make a planned extension easier.
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-rcar.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-rcar.c | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c index b2389c492579..79fd2aab8fa0 100644 --- a/drivers/i2c/busses/i2c-rcar.c +++ b/drivers/i2c/busses/i2c-rcar.c @@ -122,9 +122,6 @@ struct rcar_i2c_priv { #define rcar_i2c_priv_to_dev(p) ((p)->adap.dev.parent) #define rcar_i2c_is_recv(p) ((p)->msg->flags & I2C_M_RD) -#define rcar_i2c_flags_set(p, f) ((p)->flags |= (f)) -#define rcar_i2c_flags_has(p, f) ((p)->flags & (f)) - #define LOOP_TIMEOUT 1024 @@ -258,7 +255,7 @@ static void rcar_i2c_prepare_msg(struct rcar_i2c_priv *priv) priv->pos = 0; if (priv->msgs_left == 1) - rcar_i2c_flags_set(priv, ID_LAST_MSG); + priv->flags |= ID_LAST_MSG; rcar_i2c_write(priv, ICMAR, (priv->msg->addr << 1) | read); /* @@ -266,7 +263,7 @@ static void rcar_i2c_prepare_msg(struct rcar_i2c_priv *priv) * of ICMSR and ICMCR depends on whether we issue START or REP_START. Since * it didn't cause a drawback for me, let's rather be safe than sorry. */ - if (rcar_i2c_flags_has(priv, ID_FIRST_MSG)) { + if (priv->flags & ID_FIRST_MSG) { rcar_i2c_write(priv, ICMSR, 0); rcar_i2c_write(priv, ICMCR, RCAR_BUS_PHASE_START); } else { @@ -438,7 +435,7 @@ static irqreturn_t rcar_i2c_irq(int irq, void *ptr) /* Arbitration lost */ if (msr & MAL) { - rcar_i2c_flags_set(priv, (ID_DONE | ID_ARBLOST)); + priv->flags |= ID_DONE | ID_ARBLOST; goto out; } @@ -446,14 +443,14 @@ static irqreturn_t rcar_i2c_irq(int irq, void *ptr) if (msr & MNR) { /* HW automatically sends STOP after received NACK */ rcar_i2c_write(priv, ICMIER, RCAR_IRQ_STOP); - rcar_i2c_flags_set(priv, ID_NACK); + priv->flags |= ID_NACK; goto out; } /* Stop */ if (msr & MST) { priv->msgs_left--; /* The last message also made it */ - rcar_i2c_flags_set(priv, ID_DONE); + priv->flags |= ID_DONE; goto out; } @@ -463,7 +460,7 @@ static irqreturn_t rcar_i2c_irq(int irq, void *ptr) rcar_i2c_irq_send(priv, msr); out: - if (rcar_i2c_flags_has(priv, ID_DONE)) { + if (priv->flags & ID_DONE) { rcar_i2c_write(priv, ICMIER, 0); rcar_i2c_write(priv, ICMSR, 0); wake_up(&priv->wait); @@ -501,15 +498,14 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap, priv->flags = ID_FIRST_MSG; rcar_i2c_prepare_msg(priv); - time_left = wait_event_timeout(priv->wait, - rcar_i2c_flags_has(priv, ID_DONE), + time_left = wait_event_timeout(priv->wait, priv->flags & ID_DONE, num * adap->timeout); if (!time_left) { rcar_i2c_init(priv); ret = -ETIMEDOUT; - } else if (rcar_i2c_flags_has(priv, ID_NACK)) { + } else if (priv->flags & ID_NACK) { ret = -ENXIO; - } else if (rcar_i2c_flags_has(priv, ID_ARBLOST)) { + } else if (priv->flags & ID_ARBLOST) { ret = -EAGAIN; } else { ret = num - priv->msgs_left; /* The number of transfer */ |