Drivers using GPIO

Drivers using GPIO

First set it to GPIO mode (not other multiplexing mode) in Infinity2M-SSC011A-S01A-PADMUX-XXX. DTSI:

<PAD_GPIO1          PINMUX_FOR_GPIO_MODE        MDRV_PUSE_I2C1_DEV_RESET >,

Application GPIO:
int gpio_request(unsigned gpio,constchar* label);

Set GPIO as input mode:
int gpio_direction_input(unsigned gpio);

Set GPIO to output mode:
int gpio_direction_output(unsigned gpio,int value);

Get the input level of this GPIO:
int gpio_get_value(unsigned gpio);

Set the output level of this GPIO:
void gpio_set_value(unsigned gpio,int value);