Djam/u-boot
1
0
Fork 0
mirror of https://github.com/u-boot/u-boot.git synced 2025-04-27 07:51:38 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

gpio: atmel: add gpio common API support

Browse source 
add gpio common API support for gpio command

Signed-off-by: Bo Shen <voice.shen@atmel.com>
[fix unnecessary cast]
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
This commit is contained in:
Bo Shen 2013-08-13 14:38:31 +08:00 • committed by Andreas Bießmann
parent 4bc9b7a560
commit 6edaea8705
1 changed files with 43 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

43
drivers/gpio/at91_gpio.c
View file

@ -353,3 +353,46 @@ int at91_get_pio_value(unsigned port, unsigned pin)
return pdsr != 0; 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 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;
}