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-rw-r--r--include/fdtdec.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/fdtdec.h b/include/fdtdec.h
index b5d7d2f..5164ce2 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -90,6 +90,22 @@ struct fdt_gpio_state {
#define fdt_gpio_isvalid(x) ((x)->gpio != FDT_GPIO_NONE)
/**
+ * Read the GPIO taking into account the polarity of the pin.
+ *
+ * @param gpio pointer to the decoded gpio
+ * @return value of the gpio if successful, < 0 if unsuccessful
+ */
+int fdtdec_get_gpio(struct fdt_gpio_state *gpio);
+
+/**
+ * Write the GPIO taking into account the polarity of the pin.
+ *
+ * @param gpio pointer to the decoded gpio
+ * @return 0 if successful
+ */
+int fdtdec_set_gpio(struct fdt_gpio_state *gpio, int val);
+
+/**
* Find the next numbered alias for a peripheral. This is used to enumerate
* all the peripherals of a certain type.
*