1 files changed, 105 insertions, 0 deletions
diff --git a/ChvRefCodePkg/CherryViewSoc/SouthCluster/Include/Protocol/SpiHost.h b/ChvRefCodePkg/CherryViewSoc/SouthCluster/Include/Protocol/SpiHost.h
new file mode 100644
index 0000000000..2396947f0d
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+++ b/ChvRefCodePkg/CherryViewSoc/SouthCluster/Include/Protocol/SpiHost.h
@@ -0,0 +1,105 @@
+/** @file
+  SPI host interface declaration
+
+  A driver or application uses the SPI host protocol to
+  perform operations on the SPI bus.  With the support
+  of the SPI platform driver, access is possible to any
+  device on the SPI bus, even devices behind multiplexers
+  and switches.
+
+  Copyright (c) 2014 - 2015, Intel Corporation. All rights reserved.<BR>
+
+  This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php.
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef __SPI_HOST_H__
+#define __SPI_HOST_H__
+
+//#include <Protocol/SpiMaster.h>
+
+#include <Protocol/SpiBus.h>
+/**
+  Declare the forward references
+
+**/
+typedef struct _EFI_SPI_HOST_PROTOCOL EFI_SPI_HOST_PROTOCOL;
+
+/**
+  Queue an SPI operation for execution on the SPI controller.
+
+  @param[in] This             Address of an EFI_SPI_HOST_PROTOCOL instance.
+  @param[in] Event            Event to set for asynchronous operations,
+                              NULL for synchronous operations
+  @param[in] RequestPacket    Address of an EFI_SPI_REQUEST_PACKET
+
+
+  @retval EFI_SUCCESS           The operation completed successfully.
+  @retval EFI_INVALID_PARAMETER
+  @retval EFI_ABORTED           The request did not complete because the driver
+                                was shutdown.
+  @retval EFI_BAD_BUFFER_SIZE   The WriteBytes or ReadBytes buffer size is too large.
+  @retval EFI_DEVICE_ERROR      There was an SPI error during the operation.
+                                This could indicate the slave device is not present.
+  @retval EFI_NO_RESPONSE       The SPI device is not responding to the
+                                slave address.  EFI_DEVICE_ERROR may also be
+                                returned if the controller can not distinguish
+                                when the NACK occurred.
+  @retval EFI_NOT_FOUND         SPI slave address exceeds maximum address
+  @retval EFI_NOT_READY         SPI bus is busy or operation pending, wait for
+                                the event and then read status pointed to by
+                                the request packet.
+  @retval EFI_OUT_OF_RESOURCES  Insufficient memory for SPI operation
+  @retval EFI_TIMEOUT           The transaction did not complete within an internally
+                                specified timeout period.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_SPI_HOST_START_REQUEST) (
+  IN CONST EFI_SPI_HOST_PROTOCOL *This,
+  IN CONST EFI_SPI_DEVICE * SpiDevice,
+  IN EFI_EVENT Event OPTIONAL,
+  IN UINT8 ChipSelect,
+  IN EFI_SPI_REQUEST_PACKET *RequestPacket
+  );
+
+///
+/// Host access to the SPI bus.
+///
+struct _EFI_SPI_HOST_PROTOCOL {
+  ///
+  /// Queue an operation for execution on the SPI bus
+  ///
+  EFI_SPI_HOST_START_REQUEST StartRequest;
+
+  ///
+  /// The maximum number of bytes the SPI host controller
+  /// is able to receive from the SPI bus.
+  ///
+  UINT32 MaximumReceiveBytes;
+
+  ///
+  /// The maximum number of bytes the SPI host controller
+  /// is able to send on the SPI bus.
+  ///
+  UINT32 MaximumTransmitBytes;
+
+  ///
+  /// The maximum number of bytes in the SPI bus transaction.
+  ///
+  UINT32 MaximumTotalBytes;
+};
+
+///
+/// GUID for the EFI_SPI_HOST_PROTOCOL
+///
+extern EFI_GUID gEfiSpiHostProtocolGuid;
+
+#endif  //  __SPI_HOST_H__