Signed-off-by: Mike Rapoport <mike.rapop...@gmail.com>
---
drivers/staging/sm750fb/ddk750_hwi2c.c | 19 ++++++++++++++-----
drivers/staging/sm750fb/ddk750_hwi2c.h | 3 ++-
drivers/staging/sm750fb/ddk750_swi2c.c | 22 ++++++++++++++++------
3 files changed, 32 insertions(+), 12 deletions(-)
diff --git a/drivers/staging/sm750fb/ddk750_hwi2c.c
b/drivers/staging/sm750fb/ddk750_hwi2c.c
index a07aca4..949e03a 100644
--- a/drivers/staging/sm750fb/ddk750_hwi2c.c
+++ b/drivers/staging/sm750fb/ddk750_hwi2c.c
@@ -63,7 +63,8 @@ static long sm750_hw_i2c_wait_tx_done(void)
/* Wait until the transfer is completed. */
timeout = HWI2C_WAIT_TIMEOUT;
- while ((FIELD_GET(PEEK32(I2C_STATUS), I2C_STATUS, TX) !=
I2C_STATUS_TX_COMPLETED) &&
+ while ((FIELD_GET(PEEK32(I2C_STATUS),
+ I2C_STATUS, TX) != I2C_STATUS_TX_COMPLETED) &&
(timeout != 0))
timeout--;
@@ -102,7 +103,10 @@ static unsigned int sm750_hw_i2c_write_data(
* Only 16 byte can be accessed per i2c start instruction.
*/
do {
- /* Reset I2C by writing 0 to I2C_RESET register to clear the
previous status. */
+ /*
+ * Reset I2C by writing 0 to I2C_RESET register to
+ * clear the previous status.
+ */
POKE32(I2C_RESET, 0);
/* Set the number of bytes to be written */
@@ -117,7 +121,8 @@ static unsigned int sm750_hw_i2c_write_data(
POKE32(I2C_DATA0 + i, *buf++);
/* Start the I2C */
- POKE32(I2C_CTRL, FIELD_SET(PEEK32(I2C_CTRL), I2C_CTRL, CTRL,
START));
+ POKE32(I2C_CTRL,
+ FIELD_SET(PEEK32(I2C_CTRL), I2C_CTRL, CTRL, START));
/* Wait until the transfer is completed. */
if (sm750_hw_i2c_wait_tx_done() != 0)
@@ -165,7 +170,10 @@ static unsigned int sm750_hw_i2c_read_data(
* Only 16 byte can be accessed per i2c start instruction.
*/
do {
- /* Reset I2C by writing 0 to I2C_RESET register to clear all
the status. */
+ /*
+ * Reset I2C by writing 0 to I2C_RESET register to
+ * clear all the status.
+ */
POKE32(I2C_RESET, 0);
/* Set the number of bytes to be read */
@@ -176,7 +184,8 @@ static unsigned int sm750_hw_i2c_read_data(
POKE32(I2C_BYTE_COUNT, count);
/* Start the I2C */
- POKE32(I2C_CTRL, FIELD_SET(PEEK32(I2C_CTRL), I2C_CTRL, CTRL,
START));
+ POKE32(I2C_CTRL,
+ FIELD_SET(PEEK32(I2C_CTRL), I2C_CTRL, CTRL, START));
/* Wait until transaction done. */
if (sm750_hw_i2c_wait_tx_done() != 0)
diff --git a/drivers/staging/sm750fb/ddk750_hwi2c.h
b/drivers/staging/sm750fb/ddk750_hwi2c.h
index 2827865..46e22dc 100644
--- a/drivers/staging/sm750fb/ddk750_hwi2c.h
+++ b/drivers/staging/sm750fb/ddk750_hwi2c.h
@@ -6,5 +6,6 @@ int sm750_hw_i2c_init(unsigned char bus_speed_mode);
void sm750_hw_i2c_close(void);
unsigned char sm750_hw_i2c_read_reg(unsigned char addr, unsigned char reg);
-int sm750_hw_i2c_write_reg(unsigned char addr, unsigned char reg, unsigned
char data);
+int sm750_hw_i2c_write_reg(unsigned char addr, unsigned char reg,
+ unsigned char data);
#endif
diff --git a/drivers/staging/sm750fb/ddk750_swi2c.c
b/drivers/staging/sm750fb/ddk750_swi2c.c
index d5f01d3..b154568 100644
--- a/drivers/staging/sm750fb/ddk750_swi2c.c
+++ b/drivers/staging/sm750fb/ddk750_swi2c.c
@@ -125,7 +125,10 @@ static void sm750_sw_i2c_scl(unsigned char value)
gpio_dir = PEEK32(sw_i2c_clk_gpio_data_dir_reg);
if (value) { /* High */
- /* Set direction as input. This will automatically pull the
signal up. */
+ /*
+ * Set direction as input. This will automatically
+ * pull the signal up.
+ */
gpio_dir &= ~(1 << sw_i2c_clk_gpio);
POKE32(sw_i2c_clk_gpio_data_dir_reg, gpio_dir);
} else { /* Low */
@@ -159,7 +162,10 @@ static void sm750_sw_i2c_sda(unsigned char value)
gpio_dir = PEEK32(sw_i2c_data_gpio_data_dir_reg);
if (value) { /* High */
- /* Set direction as input. This will automatically pull the
signal up. */
+ /*
+ * Set direction as input. This will automatically
+ * pull the signal up.
+ */
gpio_dir &= ~(1 << sw_i2c_data_gpio);
POKE32(sw_i2c_data_gpio_data_dir_reg, gpio_dir);
} else { /* Low */
@@ -184,10 +190,11 @@ static unsigned char sm750_sw_i2c_read_sda(void)
{
unsigned long gpio_dir;
unsigned long gpio_data;
+ unsigned long dir_mask = 1 << sw_i2c_data_gpio;
/* Make sure that the direction is input (High) */
gpio_dir = PEEK32(sw_i2c_data_gpio_data_dir_reg);
- if ((gpio_dir & (1 << sw_i2c_data_gpio)) != (~(1 << sw_i2c_data_gpio)))
{
+ if ((gpio_dir & dir_mask) != ~dir_mask) {
gpio_dir &= ~(1 << sw_i2c_data_gpio);
POKE32(sw_i2c_data_gpio_data_dir_reg, gpio_dir);
}
@@ -392,7 +399,10 @@ long sm750_sw_i2c_init(
{
int i;
- /* Return 0 if the GPIO pins to be used is out of range. The range is
only from [0..63] */
+ /*
+ * Return 0 if the GPIO pins to be used is out of range. The
+ * range is only from [0..63]
+ */
if ((clk_gpio > 31) || (data_gpio > 31))
return -1;
@@ -417,9 +427,9 @@ long sm750_sw_i2c_init(
/* Enable the GPIO pins for the i2c Clock and Data (GPIO MUX) */
POKE32(sw_i2c_clk_gpio_mux_reg,
- PEEK32(sw_i2c_clk_gpio_mux_reg) & ~(1 <<
sw_i2c_clk_gpio));
+ PEEK32(sw_i2c_clk_gpio_mux_reg) & ~(1 << sw_i2c_clk_gpio));
POKE32(sw_i2c_data_gpio_mux_reg,
- PEEK32(sw_i2c_data_gpio_mux_reg) & ~(1 <<
sw_i2c_data_gpio));
+ PEEK32(sw_i2c_data_gpio_mux_reg) & ~(1 << sw_i2c_data_gpio));
/* Enable GPIO power */
enableGPIO(1);
--
2.1.0
--
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