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Commit 9cb9480e authored by Jan Glauber's avatar Jan Glauber Committed by Wolfram Sang
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i2c: octeon: Rename [read|write]_sw to reg_[read|write] 

Rename the [read|write]_sw functions to make it clearer they access
the TWSI registers.
Signed-off-by: default avatarJan Glauber <jglauber@cavium.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent f541bb38
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Showing with 26 additions and 26 deletions
drivers/i2c/busses/i2c-octeon.c
View file @ 9cb9480e
......@@ -80,14 +80,14 @@ struct octeon_i2c {
};
/**
* octeon_i2c_write_sw - write an I2C core register
* octeon_i2c_reg_write - write an I2C core register
* @i2c: The struct octeon_i2c
* @eop_reg: Register selector
* @data: Value to be written
*
* The I2C core registers are accessed indirectly via the SW_TWSI CSR.
*/
static void octeon_i2c_write_sw(struct octeon_i2c *i2c, u64 eop_reg, u8 data)
static void octeon_i2c_reg_write(struct octeon_i2c *i2c, u64 eop_reg, u8 data)
{
u64 tmp;
......@@ -98,7 +98,7 @@ static void octeon_i2c_write_sw(struct octeon_i2c *i2c, u64 eop_reg, u8 data)
}
/**
* octeon_i2c_read_sw - read lower bits of an I2C core register
* octeon_i2c_reg_read - read lower bits of an I2C core register
* @i2c: The struct octeon_i2c
* @eop_reg: Register selector
*
......@@ -106,7 +106,7 @@ static void octeon_i2c_write_sw(struct octeon_i2c *i2c, u64 eop_reg, u8 data)
*
* The I2C core registers are accessed indirectly via the SW_TWSI CSR.
*/
static u8 octeon_i2c_read_sw(struct octeon_i2c *i2c, u64 eop_reg)
static u8 octeon_i2c_reg_read(struct octeon_i2c *i2c, u64 eop_reg)
{
u64 tmp;
......@@ -189,7 +189,7 @@ static irqreturn_t octeon_i2c_isr(int irq, void *dev_id)
static int octeon_i2c_test_iflg(struct octeon_i2c *i2c)
{
return (octeon_i2c_read_sw(i2c, SW_TWSI_EOP_TWSI_CTL) & TWSI_CTL_IFLG) != 0;
return (octeon_i2c_reg_read(i2c, SW_TWSI_EOP_TWSI_CTL) & TWSI_CTL_IFLG) != 0;
}
/**
......@@ -252,8 +252,8 @@ static void octeon_i2c_set_clock(struct octeon_i2c *i2c)
}
}
}
octeon_i2c_write_sw(i2c, SW_TWSI_OP_TWSI_CLK, thp);
octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CLKCTL, (mdiv << 3) | ndiv);
octeon_i2c_reg_write(i2c, SW_TWSI_OP_TWSI_CLK, thp);
octeon_i2c_reg_write(i2c, SW_TWSI_EOP_TWSI_CLKCTL, (mdiv << 3) | ndiv);
}
static int octeon_i2c_init_lowlevel(struct octeon_i2c *i2c)
......@@ -262,14 +262,14 @@ static int octeon_i2c_init_lowlevel(struct octeon_i2c *i2c)
int tries;
/* disable high level controller, enable bus access */
octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL, TWSI_CTL_ENAB);
octeon_i2c_reg_write(i2c, SW_TWSI_EOP_TWSI_CTL, TWSI_CTL_ENAB);
/* reset controller */
octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_RST, 0);
octeon_i2c_reg_write(i2c, SW_TWSI_EOP_TWSI_RST, 0);
for (tries = 10; tries; tries--) {
udelay(1);
status = octeon_i2c_read_sw(i2c, SW_TWSI_EOP_TWSI_STAT);
status = octeon_i2c_reg_read(i2c, SW_TWSI_EOP_TWSI_STAT);
if (status == STAT_IDLE)
return 0;
}
......@@ -288,19 +288,19 @@ static int octeon_i2c_start(struct octeon_i2c *i2c)
int result;
u8 data;
octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL,
octeon_i2c_reg_write(i2c, SW_TWSI_EOP_TWSI_CTL,
TWSI_CTL_ENAB | TWSI_CTL_STA);
result = octeon_i2c_wait(i2c);
if (result) {
if (octeon_i2c_read_sw(i2c, SW_TWSI_EOP_TWSI_STAT) == STAT_IDLE) {
if (octeon_i2c_reg_read(i2c, SW_TWSI_EOP_TWSI_STAT) == STAT_IDLE) {
/*
* Controller refused to send start flag May
* be a client is holding SDA low - let's try
* to free it.
*/
octeon_i2c_unblock(i2c);
octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL,
octeon_i2c_reg_write(i2c, SW_TWSI_EOP_TWSI_CTL,
TWSI_CTL_ENAB | TWSI_CTL_STA);
result = octeon_i2c_wait(i2c);
}
......@@ -308,7 +308,7 @@ static int octeon_i2c_start(struct octeon_i2c *i2c)
return result;
}
data = octeon_i2c_read_sw(i2c, SW_TWSI_EOP_TWSI_STAT);
data = octeon_i2c_reg_read(i2c, SW_TWSI_EOP_TWSI_STAT);
if ((data != STAT_START) && (data != STAT_RSTART)) {
dev_err(i2c->dev, "%s: bad status (0x%x)\n", __func__, data);
return -EIO;
......@@ -320,7 +320,7 @@ static int octeon_i2c_start(struct octeon_i2c *i2c)
/* send STOP to the bus */
static void octeon_i2c_stop(struct octeon_i2c *i2c)
{
octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL,
octeon_i2c_reg_write(i2c, SW_TWSI_EOP_TWSI_CTL,
TWSI_CTL_ENAB | TWSI_CTL_STP);
}
......@@ -345,15 +345,15 @@ static int octeon_i2c_write(struct octeon_i2c *i2c, int target,
if (result)
return result;
octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_DATA, target << 1);
octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL, TWSI_CTL_ENAB);
octeon_i2c_reg_write(i2c, SW_TWSI_EOP_TWSI_DATA, target << 1);
octeon_i2c_reg_write(i2c, SW_TWSI_EOP_TWSI_CTL, TWSI_CTL_ENAB);
result = octeon_i2c_wait(i2c);
if (result)
return result;
for (i = 0; i < length; i++) {
tmp = octeon_i2c_read_sw(i2c, SW_TWSI_EOP_TWSI_STAT);
tmp = octeon_i2c_reg_read(i2c, SW_TWSI_EOP_TWSI_STAT);
if ((tmp != STAT_TXADDR_ACK) && (tmp != STAT_TXDATA_ACK)) {
dev_err(i2c->dev,
......@@ -362,8 +362,8 @@ static int octeon_i2c_write(struct octeon_i2c *i2c, int target,
return -EIO;
}
octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_DATA, data[i]);
octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL, TWSI_CTL_ENAB);
octeon_i2c_reg_write(i2c, SW_TWSI_EOP_TWSI_DATA, data[i]);
octeon_i2c_reg_write(i2c, SW_TWSI_EOP_TWSI_CTL, TWSI_CTL_ENAB);
result = octeon_i2c_wait(i2c);
if (result)
......@@ -398,15 +398,15 @@ static int octeon_i2c_read(struct octeon_i2c *i2c, int target,
if (result)
return result;
octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_DATA, (target << 1) | 1);
octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL, TWSI_CTL_ENAB);
octeon_i2c_reg_write(i2c, SW_TWSI_EOP_TWSI_DATA, (target << 1) | 1);
octeon_i2c_reg_write(i2c, SW_TWSI_EOP_TWSI_CTL, TWSI_CTL_ENAB);
result = octeon_i2c_wait(i2c);
if (result)
return result;
for (i = 0; i < length; i++) {
tmp = octeon_i2c_read_sw(i2c, SW_TWSI_EOP_TWSI_STAT);
tmp = octeon_i2c_reg_read(i2c, SW_TWSI_EOP_TWSI_STAT);
if ((tmp != STAT_RXDATA_ACK) && (tmp != STAT_RXADDR_ACK)) {
dev_err(i2c->dev,
......@@ -416,17 +416,17 @@ static int octeon_i2c_read(struct octeon_i2c *i2c, int target,
}
if (i + 1 < length)
octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL,
octeon_i2c_reg_write(i2c, SW_TWSI_EOP_TWSI_CTL,
TWSI_CTL_ENAB | TWSI_CTL_AAK);
else
octeon_i2c_write_sw(i2c, SW_TWSI_EOP_TWSI_CTL,
octeon_i2c_reg_write(i2c, SW_TWSI_EOP_TWSI_CTL,
TWSI_CTL_ENAB);
result = octeon_i2c_wait(i2c);
if (result)
return result;
data[i] = octeon_i2c_read_sw(i2c, SW_TWSI_EOP_TWSI_DATA);
data[i] = octeon_i2c_reg_read(i2c, SW_TWSI_EOP_TWSI_DATA);
if (recv_len && i == 0) {
if (data[i] > I2C_SMBUS_BLOCK_MAX + 1) {
dev_err(i2c->dev,
......
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