diff options
| author | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-01-03 06:44:03 +0000 |
|---|---|---|
| committer | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-01-03 06:44:03 +0000 |
| commit | 31f9e631176ef02829edcb537ec5caf04026c3f2 (patch) | |
| tree | a9dadefcb240ef2830e33edbb1e4fdc29ebf9049 /OptionRomPkg/Include/Library/DxeI2cLib.h | |
| parent | b7bef2a9fb22c891eb2a8284132bf67574d82839 (diff) | |
| download | edk2-platforms-31f9e631176ef02829edcb537ec5caf04026c3f2.tar.xz | |
1. add DxeI2c Library in OptionRomPkg.
2. produce EFI_EDID_DISCOVERED_PROTOCOL and EFI_EDID_ACTIVE_PROTOCOL in CirrusLogic5430 module.
3. consume EFI_OVERRIDE_PROTOCOL in CirrusLogic5430 module.
4. setup video mode according to EDID information in CirrusLogic5430 module.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4479 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'OptionRomPkg/Include/Library/DxeI2cLib.h')
| -rw-r--r-- | OptionRomPkg/Include/Library/DxeI2cLib.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/OptionRomPkg/Include/Library/DxeI2cLib.h b/OptionRomPkg/Include/Library/DxeI2cLib.h new file mode 100644 index 0000000000..5325560cb9 --- /dev/null +++ b/OptionRomPkg/Include/Library/DxeI2cLib.h @@ -0,0 +1,64 @@ +/** @file + I2c Bus byte read/write functions. + + Copyright (c) 2008, Intel Corporation + All rights reserved. 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. + +**/
+
+#include <Protocol/PciIo.h>
+
+/**
+ Read one byte data on I2C Bus.
+
+ Read one byte data from the slave device connectet to I2C Bus.
+ If Data is NULL, then ASSERT().
+
+ @param PciIo The pointer to PCI_IO_PROTOCOL.
+ @param DeviceAddress Slave device's address.
+ @param RegisterAddress The register address on slave device.
+ @param Data The pointer to returned data if EFI_SUCCESS returned.
+
+ @retval EFI_DEVICE_ERROR
+ @retval EFI_SUCCESS
+
+**/
+EFI_STATUS
+EFIAPI
+I2cReadByte (
+ EFI_PCI_IO_PROTOCOL *PciIo,
+ UINT8 DeviceAddress,
+ UINT8 RegisterAddress,
+ UINT8 *Data
+ );
+
+/**
+ Write one byte data onto I2C Bus.
+
+ Write one byte data to the slave device connectet to I2C Bus.
+ If Data is NULL, then ASSERT().
+
+ @param PciIo The pointer to PCI_IO_PROTOCOL.
+ @param DeviceAddress Slave device's address.
+ @param RegisterAddress The register address on slave device.
+ @param Data The pointer to write data.
+
+ @retval EFI_DEVICE_ERROR
+ @retval EFI_SUCCESS
+
+**/
+EFI_STATUS
+EFIAPI
+I2cWriteByte (
+ EFI_PCI_IO_PROTOCOL *PciIo,
+ UINT8 DeviceAddress,
+ UINT8 RegisterAddress,
+ UINT8 *Data
+ );
+
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