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Diffstat (limited to 'roms/skiboot/platforms/rhesus/ec/gpio.h')
-rw-r--r--roms/skiboot/platforms/rhesus/ec/gpio.h41
1 files changed, 41 insertions, 0 deletions
diff --git a/roms/skiboot/platforms/rhesus/ec/gpio.h b/roms/skiboot/platforms/rhesus/ec/gpio.h
new file mode 100644
index 000000000..65d7d878a
--- /dev/null
+++ b/roms/skiboot/platforms/rhesus/ec/gpio.h
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: Apache-2.0
+/* Copyright 2013-2014 Google Corp. */
+
+/**
+ * @file gpio.h
+ *
+ * @brief Public interface of the EC GPIO device driver
+ *
+ */
+
+#ifndef __EC_GPIO_H_
+#define __EC_GPIO_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define EC_GPIO_INPUT 0
+#define EC_GPIO_OUTPUT 1
+#define EC_GPIO_PULLUP_DISABLE 0
+#define EC_GPIO_PULLUP_ENABLE 1
+
+// Sets up a GPIO as output or input.
+// Returns: <0 on error
+int ec_gpio_setup(EcGpioPort port, uint8_t pin,
+ int is_output, int pullup_enable);
+
+// Reads the current value of an input GPIO.
+// Returns: GPIO value (0,1) or <0 on error.
+int ec_gpio_read(EcGpioPort port, uint8_t pin);
+
+// Sets the driving value of an output GPIO. Port should already be set
+// to output mode.
+// Returns: <0 on error
+int ec_gpio_set(EcGpioPort port, uint8_t pin, int val);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // __EC_GPIO_H_