diff options
| author | Daniel Leung <daniel.leung@intel.com> | 2015-09-17 15:56:47 -0700 |
|---|---|---|
| committer | Anas Nashif <anas.nashif@intel.com> | 2016-02-05 20:24:18 -0500 |
| commit | add6d78b0a5ec0262d775a0f7292014d567d923f (patch) | |
| tree | 8d8260e941121927b57e9793cdf4513a576186af /include/gpio.h | |
| parent | 792930172a1247bf1f3159a2e71ac5a9f4035686 (diff) | |
gpio: add polarity and pull up/down config flags
This adds to the configuration flags for GPIO:
() Indicates the polarity of the pin, whether it should be
normal or inversed.
() Enables pull up/pull down for the pin.
Change-Id: I2b0c57e5a539208aff7aeb4ea53050134ab404fd
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Diffstat (limited to 'include/gpio.h')
| -rw-r--r-- | include/gpio.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/gpio.h b/include/gpio.h index 562173571..84736b4d2 100644 --- a/include/gpio.h +++ b/include/gpio.h @@ -59,6 +59,19 @@ extern "C" { #define GPIO_INT_EDGE (1 << 5) #define GPIO_INT_DOUBLE_EDGE (1 << 6) +/* Polarity of the GPIO (1 bit) */ +#define GPIO_POL_POS 7 +#define GPIO_POL_NORMAL (0 << GPIO_POL_POS) +#define GPIO_POL_INV (1 << GPIO_POL_POS) +#define GPIO_POL_MASK (1 << GPIO_POL_POS) + +/* Pull-up/pull-down for GPIO (2 bits) */ +#define GPIO_PUD_POS 8 +#define GPIO_PUD_NORMAL (0 << GPIO_PUD_POS) +#define GPIO_PUD_PULL_UP (1 << GPIO_PUD_POS) +#define GPIO_PUD_PULL_DOWN (2 << GPIO_PUD_POS) +#define GPIO_PUD_MASK (3 << GPIO_PUD_POS) + /* application callback function signature*/ typedef void (*gpio_callback_t)(struct device *port, uint32_t pin); |