add gpio common API support for gpio command
Signed-off-by: Bo Shen voice.shen@atmel.com --- drivers/gpio/at91_gpio.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+)
diff --git a/drivers/gpio/at91_gpio.c b/drivers/gpio/at91_gpio.c index 15f396f..3de0844 100644 --- a/drivers/gpio/at91_gpio.c +++ b/drivers/gpio/at91_gpio.c @@ -363,3 +363,46 @@ int at91_get_pio_value(unsigned port, unsigned pin)
return pdsr != 0; } + +/* Common GPIO API */ + +#define at91_gpio_to_port(gpio) (gpio / 32) +#define at91_gpio_to_pin(gpio) (gpio % 32) + +int gpio_request(unsigned gpio, const char *label) +{ + return 0; +} + +int gpio_free(unsigned gpio) +{ + return 0; +} + +int gpio_direction_input(unsigned gpio) +{ + at91_set_pio_input(at91_gpio_to_port(gpio), + at91_gpio_to_pin(gpio), 0); + return 0; +} + +int gpio_direction_output(unsigned gpio, int value) +{ + at91_set_pio_output(at91_gpio_to_port(gpio), + at91_gpio_to_pin(gpio), value); + return 0; +} + +int gpio_get_value(unsigned gpio) +{ + return (int) at91_get_pio_value(at91_gpio_to_port(gpio), + at91_gpio_to_pin(gpio)); +} + +int gpio_set_value(unsigned gpio, int value) +{ + at91_set_pio_value(at91_gpio_to_port(gpio), + at91_gpio_to_pin(gpio), value); + + return 0; +}