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gpio: support logic-level output at initialization

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Extend the physical level GPIO_OUTPUT_{HIGH,LOW} configuration with
GPIO_OUTPUT_{ACTIVE,INACTIVE} for logic level initialization.

This enables use of device-tree configuration flags in calls to
gpio_pin_configure() to set the logic level without having to
determine the corresponding physical level.

Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
This commit is contained in:
Peter Bigot 2019-12-03 09:29:36 -06:00 • committed by Carles Cufí
commit 52aa8edbd0
2 changed files with 33 additions and 11 deletions
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4
include/dt-bindings/gpio/gpio.h
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@ -84,8 +84,8 @@
#define GPIO_DIR_OUT (1 << 9) /* GPIO_OUTPUT */
#define GPIO_PUD_PULL_UP GPIO_PULL_UP
#define GPIO_PUD_PULL_DOWN GPIO_PULL_DOWN
#define GPIO_INT_ACTIVE_LOW (1 << 16) /* GPIO_INT_LOW_0 */
#define GPIO_INT_ACTIVE_HIGH (1 << 17) /* GPIO_INT_HIGH_1 */
#define GPIO_INT_ACTIVE_LOW (1 << 17) /* GPIO_INT_LOW_0 */
#define GPIO_INT_ACTIVE_HIGH (1 << 18) /* GPIO_INT_HIGH_1 */
/** @endcond */
/**