gpio: add helper GPIOD_FLAGS_OUTPUT
Add a macro to provide the GPIO output value according
the dir flags content.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 4d5348d8..5686df7 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -129,6 +129,12 @@
*/
};
+/* helper to compute the value of the gpio output */
+#define GPIOD_FLAGS_OUTPUT_MASK (GPIOD_ACTIVE_LOW | GPIOD_IS_OUT_ACTIVE)
+#define GPIOD_FLAGS_OUTPUT(flags) \
+ (((((flags) & GPIOD_FLAGS_OUTPUT_MASK) == GPIOD_IS_OUT_ACTIVE) || \
+ (((flags) & GPIOD_FLAGS_OUTPUT_MASK) == GPIOD_ACTIVE_LOW)))
+
/**
* dm_gpio_is_valid() - Check if a GPIO is valid
*