diff options
Diffstat (limited to 'drivers/staging/cx25821/cx25821-gpio.c')
| -rw-r--r-- | drivers/staging/cx25821/cx25821-gpio.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/drivers/staging/cx25821/cx25821-gpio.c b/drivers/staging/cx25821/cx25821-gpio.c index e8a37b47e437..2f154b3658a1 100644 --- a/drivers/staging/cx25821/cx25821-gpio.c +++ b/drivers/staging/cx25821/cx25821-gpio.c @@ -31,7 +31,7 @@ void cx25821_set_gpiopin_direction(struct cx25821_dev *dev, u32 gpio_register = 0; u32 value = 0; - // Check for valid pinNumber + /* Check for valid pinNumber */ if (pin_number >= 47) return; @@ -39,14 +39,14 @@ void cx25821_set_gpiopin_direction(struct cx25821_dev *dev, bit = pin_number - 31; gpio_oe_reg = GPIO_HI_OE; } - // Here we will make sure that the GPIOs 0 and 1 are output. keep the rest as is + /* Here we will make sure that the GPIOs 0 and 1 are output. keep the + * rest as is */ gpio_register = cx_read(gpio_oe_reg); - if (pin_logic_value == 1) { + if (pin_logic_value == 1) value = gpio_register | Set_GPIO_Bit(bit); - } else { + else value = gpio_register & Clear_GPIO_Bit(bit); - } cx_write(gpio_oe_reg, value); } @@ -58,11 +58,12 @@ static void cx25821_set_gpiopin_logicvalue(struct cx25821_dev *dev, u32 gpio_reg = GPIO_LO; u32 value = 0; - // Check for valid pinNumber + /* Check for valid pinNumber */ if (pin_number >= 47) return; - cx25821_set_gpiopin_direction(dev, pin_number, 0); // change to output direction + /* change to output direction */ + cx25821_set_gpiopin_direction(dev, pin_number, 0); if (pin_number > 31) { bit = pin_number - 31; @@ -71,25 +72,23 @@ static void cx25821_set_gpiopin_logicvalue(struct cx25821_dev *dev, value = cx_read(gpio_reg); - if (pin_logic_value == 0) { + if (pin_logic_value == 0) value &= Clear_GPIO_Bit(bit); - } else { + else value |= Set_GPIO_Bit(bit); - } cx_write(gpio_reg, value); } void cx25821_gpio_init(struct cx25821_dev *dev) { - if (dev == NULL) { + if (dev == NULL) return; - } switch (dev->board) { case CX25821_BOARD_CONEXANT_ATHENA10: default: - //set GPIO 5 to select the path for Medusa/Athena + /* set GPIO 5 to select the path for Medusa/Athena */ cx25821_set_gpiopin_logicvalue(dev, 5, 1); mdelay(20); break; |