1 files changed, 178 insertions, 0 deletions
diff --git a/roms/edk2/EmbeddedPkg/Include/Protocol/EmbeddedGpio.h b/roms/edk2/EmbeddedPkg/Include/Protocol/EmbeddedGpio.h
new file mode 100644
index 000000000..83854fc28
--- /dev/null
+++ b/roms/edk2/EmbeddedPkg/Include/Protocol/EmbeddedGpio.h
@@ -0,0 +1,178 @@
+/** @file
+
+  Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef __EMBEDDED_GPIO_H__
+#define __EMBEDDED_GPIO_H__
+
+//
+// Protocol interface structure
+//
+typedef struct _EMBEDDED_GPIO   EMBEDDED_GPIO;
+
+//
+// Data Types
+//
+typedef UINTN EMBEDDED_GPIO_PIN;
+
+#define GPIO(Port, Pin) ((EMBEDDED_GPIO_PIN)(((Port) << (16)) | (Pin)))
+#define GPIO_PIN(x)     ((EMBEDDED_GPIO_PIN)(x) & (0xFFFF))
+#define GPIO_PORT(x)    ((EMBEDDED_GPIO_PIN)(x) >> (16))
+
+typedef enum {
+  GPIO_MODE_INPUT                 = 0x00,
+  GPIO_MODE_OUTPUT_0              = 0x0E,
+  GPIO_MODE_OUTPUT_1              = 0x0F,
+  GPIO_MODE_SPECIAL_FUNCTION_2    = 0x02,
+  GPIO_MODE_SPECIAL_FUNCTION_3    = 0x03,
+  GPIO_MODE_SPECIAL_FUNCTION_4    = 0x04,
+  GPIO_MODE_SPECIAL_FUNCTION_5    = 0x05,
+  GPIO_MODE_SPECIAL_FUNCTION_6    = 0x06,
+  GPIO_MODE_SPECIAL_FUNCTION_7    = 0x07
+} EMBEDDED_GPIO_MODE;
+
+typedef enum {
+  GPIO_PULL_NONE,
+  GPIO_PULL_UP,
+  GPIO_PULL_DOWN
+} EMBEDDED_GPIO_PULL;
+
+//
+// Function Prototypes
+//
+typedef
+EFI_STATUS
+(EFIAPI *EMBEDDED_GPIO_GET) (
+  IN  EMBEDDED_GPIO       *This,
+  IN  EMBEDDED_GPIO_PIN   Gpio,
+  OUT UINTN               *Value
+  );
+/*++
+
+Routine Description:
+
+  Gets the state of a GPIO pin
+
+Arguments:
+
+  This  - pointer to protocol
+  Gpio  - which pin to read
+  Value - state of the pin
+
+Returns:
+
+  EFI_SUCCESS - GPIO state returned in Value
+
+--*/
+
+
+typedef
+EFI_STATUS
+(EFIAPI *EMBEDDED_GPIO_SET) (
+    IN EMBEDDED_GPIO      *This,
+    IN EMBEDDED_GPIO_PIN  Gpio,
+    IN EMBEDDED_GPIO_MODE Mode
+    );
+/*++
+
+Routine Description:
+
+  Sets the state of a GPIO pin
+
+Arguments:
+
+  This  - pointer to protocol
+  Gpio  - which pin to modify
+  Mode  - mode to set
+
+Returns:
+
+  EFI_SUCCESS - GPIO set as requested
+
+--*/
+
+
+typedef
+EFI_STATUS
+(EFIAPI *EMBEDDED_GPIO_GET_MODE) (
+    IN  EMBEDDED_GPIO         *This,
+    IN  EMBEDDED_GPIO_PIN     Gpio,
+    OUT EMBEDDED_GPIO_MODE    *Mode
+    );
+/*++
+
+Routine Description:
+
+  Gets the mode (function) of a GPIO pin
+
+Arguments:
+
+  This  - pointer to protocol
+  Gpio  - which pin
+  Mode  - pointer to output mode value
+
+Returns:
+
+  EFI_SUCCESS - mode value retrieved
+
+--*/
+
+
+typedef
+EFI_STATUS
+(EFIAPI *EMBEDDED_GPIO_SET_PULL) (
+    IN  EMBEDDED_GPIO      *This,
+    IN  EMBEDDED_GPIO_PIN  Gpio,
+    IN  EMBEDDED_GPIO_PULL Direction
+    );
+/*++
+
+Routine Description:
+
+  Sets the pull-up / pull-down resistor of a GPIO pin
+
+Arguments:
+
+  This  - pointer to protocol
+  Gpio  - which pin
+  Direction - pull-up, pull-down, or none
+
+Returns:
+
+  EFI_SUCCESS - pin was set
+
+--*/
+
+
+
+struct _EMBEDDED_GPIO {
+  EMBEDDED_GPIO_GET       Get;
+  EMBEDDED_GPIO_SET       Set;
+  EMBEDDED_GPIO_GET_MODE  GetMode;
+  EMBEDDED_GPIO_SET_PULL  SetPull;
+};
+
+extern EFI_GUID gEmbeddedGpioProtocolGuid;
+
+typedef struct _GPIO_CONTROLLER              GPIO_CONTROLLER;
+typedef struct _PLATFORM_GPIO_CONTROLLER     PLATFORM_GPIO_CONTROLLER;
+
+struct _GPIO_CONTROLLER {
+  UINTN                   RegisterBase;
+  UINTN                   GpioIndex;
+  UINTN                   InternalGpioCount;
+};
+
+struct _PLATFORM_GPIO_CONTROLLER {
+  UINTN                   GpioCount;
+  UINTN                   GpioControllerCount;
+  GPIO_CONTROLLER         *GpioController;
+};
+
+extern EFI_GUID gPlatformGpioProtocolGuid;
+
+#endif