[PATCH 29/33] i2c: fsi: Change fsi_i2c_write_reg to accept data instead of a pointer

Eddie James
2024-02-15T22:08:30Z

There's no use passing a pointer here.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
---
drivers/i2c/busses/i2c-fsi.c | 47 +++++++++++++++---------------------
1 file changed, 20 insertions(+), 27 deletions(-)

diff --git a/drivers/i2c/busses/i2c-fsi.c b/drivers/i2c/busses/i2c-fsi.c
index bc44cad49ef2..f237e76d29e6 100644
--- a/drivers/i2c/busses/i2c-fsi.c
+++ b/drivers/i2c/busses/i2c-fsi.c
@@ -177,9 +177,9 @@ static int fsi_i2c_read_reg(struct fsi_device *fsi, unsigned int reg,
}

static int fsi_i2c_write_reg(struct fsi_device *fsi, unsigned int reg,
- u32 *data)
+ u32 data)
{
- __be32 data_be = cpu_to_be32p(data);
+ __be32 data_be = cpu_to_be32(data);

return fsi_device_write(fsi, reg, &data_be, sizeof(data_be));
}
@@ -188,17 +188,16 @@ static int fsi_i2c_dev_init(struct fsi_i2c_master *i2c)
{
u32 mode = I2C_MODE_ENHANCED;
u32 extended_status;
- u32 interrupt = 0;
u32 watermark;
int rc;

/* since we use polling, disable interrupts */
- rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_INT_MASK, &interrupt);
+ rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_INT_MASK, 0);
if (rc)
return rc;

mode |= FIELD_PREP(I2C_MODE_CLKDIV, i2c->clock_div);
- rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_MODE, &mode);
+ rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_MODE, mode);
if (rc)
return rc;

@@ -211,13 +210,12 @@ static int fsi_i2c_dev_init(struct fsi_i2c_master *i2c)
i2c->fifo_size - I2C_FIFO_HI_LVL);
watermark |= FIELD_PREP(I2C_WATERMARK_LO, I2C_FIFO_LO_LVL);

- return fsi_i2c_write_reg(i2c->fsi, I2C_FSI_WATER_MARK, &watermark);
+ return fsi_i2c_write_reg(i2c->fsi, I2C_FSI_WATER_MARK, watermark);
}

static int fsi_i2c_set_port(struct fsi_i2c_port *port)
{
struct fsi_device *fsi = port->master->fsi;
- u32 dummy = 0;
u32 mode;
int rc;

@@ -229,12 +227,12 @@ static int fsi_i2c_set_port(struct fsi_i2c_port *port)
return 0;

mode = (mode & ~I2C_MODE_PORT) | FIELD_PREP(I2C_MODE_PORT, port->port);
- rc = fsi_i2c_write_reg(fsi, I2C_FSI_MODE, &mode);
+ rc = fsi_i2c_write_reg(fsi, I2C_FSI_MODE, mode);
if (rc)
return rc;

/* reset engine when port is changed */
- return fsi_i2c_write_reg(fsi, I2C_FSI_RESET_ERR, &dummy);
+ return fsi_i2c_write_reg(fsi, I2C_FSI_RESET_ERR, 0);
}

static int fsi_i2c_start(struct fsi_i2c_port *port, struct i2c_msg *msg,
@@ -253,7 +251,7 @@ static int fsi_i2c_start(struct fsi_i2c_port *port, struct i2c_msg *msg,
cmd |= FIELD_PREP(I2C_CMD_ADDR, msg->addr);
cmd |= FIELD_PREP(I2C_CMD_LEN, msg->len);

- return fsi_i2c_write_reg(port->master->fsi, I2C_FSI_CMD, &cmd);
+ return fsi_i2c_write_reg(port->master->fsi, I2C_FSI_CMD, cmd);
}

static int fsi_i2c_get_op_bytes(int op_bytes)
@@ -340,12 +338,11 @@ static int fsi_i2c_get_scl(struct i2c_adapter *adap)
static void fsi_i2c_set_scl(struct i2c_adapter *adap, int val)
{
struct fsi_i2c_port *port = adap->algo_data;
- u32 dummy = 0;

if (val)
- fsi_i2c_write_reg(port->master->fsi, I2C_FSI_SET_SCL, &dummy);
+ fsi_i2c_write_reg(port->master->fsi, I2C_FSI_SET_SCL, 0);
else
- fsi_i2c_write_reg(port->master->fsi, I2C_FSI_RESET_SCL, &dummy);
+ fsi_i2c_write_reg(port->master->fsi, I2C_FSI_RESET_SCL, 0);
}

static int fsi_i2c_get_sda(struct i2c_adapter *adap)
@@ -361,12 +358,11 @@ static int fsi_i2c_get_sda(struct i2c_adapter *adap)
static void fsi_i2c_set_sda(struct i2c_adapter *adap, int val)
{
struct fsi_i2c_port *port = adap->algo_data;
- u32 dummy = 0;

if (val)
- fsi_i2c_write_reg(port->master->fsi, I2C_FSI_SET_SDA, &dummy);
+ fsi_i2c_write_reg(port->master->fsi, I2C_FSI_SET_SDA, 0);
else
- fsi_i2c_write_reg(port->master->fsi, I2C_FSI_RESET_SDA, &dummy);
+ fsi_i2c_write_reg(port->master->fsi, I2C_FSI_RESET_SDA, 0);
}

static void fsi_i2c_prepare_recovery(struct i2c_adapter *adap)
@@ -380,7 +376,7 @@ static void fsi_i2c_prepare_recovery(struct i2c_adapter *adap)
return;

mode |= I2C_MODE_DIAG;
- fsi_i2c_write_reg(port->master->fsi, I2C_FSI_MODE, &mode);
+ fsi_i2c_write_reg(port->master->fsi, I2C_FSI_MODE, mode);
}

static void fsi_i2c_unprepare_recovery(struct i2c_adapter *adap)
@@ -394,13 +390,12 @@ static void fsi_i2c_unprepare_recovery(struct i2c_adapter *adap)
return;

mode &= ~I2C_MODE_DIAG;
- fsi_i2c_write_reg(port->master->fsi, I2C_FSI_MODE, &mode);
+ fsi_i2c_write_reg(port->master->fsi, I2C_FSI_MODE, mode);
}

static int fsi_i2c_reset_bus(struct fsi_i2c_master *i2c,
struct fsi_i2c_port *port)
{
- u32 dummy = 0;
u32 stat;
int rc;

@@ -408,7 +403,7 @@ static int fsi_i2c_reset_bus(struct fsi_i2c_master *i2c,
i2c_recover_bus(&port->adapter);

/* reset errors */
- rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_RESET_ERR, &dummy);
+ rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_RESET_ERR, 0);
if (rc)
return rc;

@@ -423,7 +418,7 @@ static int fsi_i2c_reset_bus(struct fsi_i2c_master *i2c,
return 0;

/* failed to get command complete; reset engine again */
- rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_RESET_I2C, &dummy);
+ rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_RESET_I2C, 0);
if (rc)
return rc;

@@ -433,12 +428,11 @@ static int fsi_i2c_reset_bus(struct fsi_i2c_master *i2c,

static int fsi_i2c_reset_engine(struct fsi_i2c_master *i2c, u16 port)
{
- u32 dummy = 0;
u32 mode;
int rc;

/* reset engine */
- rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_RESET_I2C, &dummy);
+ rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_RESET_I2C, 0);
if (rc)
return rc;

@@ -455,14 +449,13 @@ static int fsi_i2c_reset_engine(struct fsi_i2c_master *i2c, u16 port)
if (port) {
mode &= ~I2C_MODE_PORT;
mode |= FIELD_PREP(I2C_MODE_PORT, port);
- rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_MODE, &mode);
+ rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_MODE, mode);
if (rc)
return rc;
}

/* reset busy register; hw workaround */
- dummy = I2C_PORT_BUSY_RESET;
- rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_PORT_BUSY, &dummy);
+ rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_PORT_BUSY, I2C_PORT_BUSY_RESET);
if (rc)
return rc;

@@ -497,7 +490,7 @@ static int fsi_i2c_abort(struct fsi_i2c_port *port, u32 status)
return 0;

/* write stop command */
- rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_CMD, &cmd);
+ rc = fsi_i2c_write_reg(i2c->fsi, I2C_FSI_CMD, cmd);
if (rc)
return rc;

--
2.39.3