Djam/arm-trusted-firmware
1
0
Fork 0
mirror of https://github.com/ARM-software/arm-trusted-firmware.git synced 2025-04-18 18:44:22 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

gpio: support gpio set/get pull status

Browse source 
On some platform gpio can set/get pull status when input, add these
function so we can set/get gpio pull status when need it. And they are
optional function.
This commit is contained in:
Caesar Wang 2016-05-25 18:48:45 +08:00
parent e141aa0357
commit 195889829e
2 changed files with 28 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
drivers/gpio/gpio.c
View file

@ -80,6 +80,26 @@ void gpio_set_value(int gpio, int value)
ops->set_value(gpio, value); ops->set_value(gpio, value);
} }
void gpio_set_pull(int gpio, int pull)
{
assert(ops);
assert(ops->set_pull != 0);
assert((pull == GPIO_PULL_NONE) || (pull == GPIO_PULL_UP) ||
(pull == GPIO_PULL_DOWN));
assert(gpio >= 0);
ops->set_pull(gpio, pull);
}
int gpio_get_pull(int gpio)
{
assert(ops);
assert(ops->get_pull != 0);
assert(gpio >= 0);
return ops->get_pull(gpio);
}
/* /*
* Initialize the gpio. The fields in the provided gpio * Initialize the gpio. The fields in the provided gpio
* ops pointer must be valid. * ops pointer must be valid.

8
include/drivers/gpio.h
View file

@ -37,17 +37,25 @@
#define GPIO_LEVEL_LOW 0 #define GPIO_LEVEL_LOW 0
#define GPIO_LEVEL_HIGH 1 #define GPIO_LEVEL_HIGH 1
#define GPIO_PULL_NONE 0
#define GPIO_PULL_UP 1
#define GPIO_PULL_DOWN 2
typedef struct gpio_ops { typedef struct gpio_ops {
int (*get_direction)(int gpio); int (*get_direction)(int gpio);
void (*set_direction)(int gpio, int direction); void (*set_direction)(int gpio, int direction);
int (*get_value)(int gpio); int (*get_value)(int gpio);
void (*set_value)(int gpio, int value); void (*set_value)(int gpio, int value);
void (*set_pull)(int gpio, int pull);
int (*get_pull)(int gpio);
} gpio_ops_t; } gpio_ops_t;
int gpio_get_direction(int gpio); int gpio_get_direction(int gpio);
void gpio_set_direction(int gpio, int direction); void gpio_set_direction(int gpio, int direction);
int gpio_get_value(int gpio); int gpio_get_value(int gpio);
void gpio_set_value(int gpio, int value); void gpio_set_value(int gpio, int value);
void gpio_set_pull(int gpio, int pull);
int gpio_get_pull(int gpio);
void gpio_init(const gpio_ops_t *ops); void gpio_init(const gpio_ops_t *ops);
#endif /* __GPIO_H__ */ #endif /* __GPIO_H__ */