diff options
Diffstat (limited to 'QuarkPlatformPkg/Library/PlatformHelperLib/PlatformHelperLib.c')
| -rw-r--r-- | QuarkPlatformPkg/Library/PlatformHelperLib/PlatformHelperLib.c | 253 |
1 files changed, 252 insertions, 1 deletions
diff --git a/QuarkPlatformPkg/Library/PlatformHelperLib/PlatformHelperLib.c b/QuarkPlatformPkg/Library/PlatformHelperLib/PlatformHelperLib.c index 6aefdb3794..f9ceda4aaf 100644 --- a/QuarkPlatformPkg/Library/PlatformHelperLib/PlatformHelperLib.c +++ b/QuarkPlatformPkg/Library/PlatformHelperLib/PlatformHelperLib.c @@ -1,7 +1,7 @@ /** @file
Helper routines with common PEI / DXE implementation.
-Copyright (c) 2013-2015 Intel Corporation.
+Copyright (c) 2013-2016 Intel Corporation.
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@@ -14,6 +14,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. **/
#include "CommonHeader.h"
+#include <Library/I2cLib.h>
CHAR16 *mPlatTypeNameTable[] = { EFI_PLATFORM_TYPE_NAME_TABLE_DEFINITION };
UINTN mPlatTypeNameTableLen = ((sizeof(mPlatTypeNameTable)) / sizeof (CHAR16 *));
@@ -261,3 +262,253 @@ PlatformLegacyGpioGetLevel ( GpioNumMask = (1 << GpioNum);
return ((RegValue & GpioNumMask) != 0);
}
+
+
+BOOLEAN
+Pcal9555GetPortRegBit (
+ IN CONST UINT32 Pcal9555SlaveAddr,
+ IN CONST UINT32 GpioNum,
+ IN CONST UINT8 RegBase
+ )
+{
+ EFI_STATUS Status;
+ UINTN ReadLength;
+ UINTN WriteLength;
+ UINT8 Data[2];
+ EFI_I2C_DEVICE_ADDRESS I2cDeviceAddr;
+ EFI_I2C_ADDR_MODE I2cAddrMode;
+ UINT8 *RegValuePtr;
+ UINT8 GpioNumMask;
+ UINT8 SubAddr;
+
+ I2cDeviceAddr.I2CDeviceAddress = (UINTN)Pcal9555SlaveAddr;
+ I2cAddrMode = EfiI2CSevenBitAddrMode;
+
+ if (GpioNum < 8) {
+ SubAddr = RegBase;
+ GpioNumMask = (UINT8)(1 << GpioNum);
+ } else {
+ SubAddr = RegBase + 1;
+ GpioNumMask = (UINT8)(1 << (GpioNum - 8));
+ }
+
+ //
+ // Output port value always at 2nd byte in Data variable.
+ //
+ RegValuePtr = &Data[1];
+
+ //
+ // On read entry sub address at 2nd byte, on read exit output
+ // port value in 2nd byte.
+ //
+ Data[1] = SubAddr;
+ WriteLength = 1;
+ ReadLength = 1;
+ Status = I2cReadMultipleByte (
+ I2cDeviceAddr,
+ I2cAddrMode,
+ &WriteLength,
+ &ReadLength,
+ &Data[1]
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Adjust output port bit given callers request.
+ //
+ return ((*RegValuePtr & GpioNumMask) != 0);
+}
+
+VOID
+Pcal9555SetPortRegBit (
+ IN CONST UINT32 Pcal9555SlaveAddr,
+ IN CONST UINT32 GpioNum,
+ IN CONST UINT8 RegBase,
+ IN CONST BOOLEAN LogicOne
+ )
+{
+ EFI_STATUS Status;
+ UINTN ReadLength;
+ UINTN WriteLength;
+ UINT8 Data[2];
+ EFI_I2C_DEVICE_ADDRESS I2cDeviceAddr;
+ EFI_I2C_ADDR_MODE I2cAddrMode;
+ UINT8 *RegValuePtr;
+ UINT8 GpioNumMask;
+ UINT8 SubAddr;
+
+ I2cDeviceAddr.I2CDeviceAddress = (UINTN)Pcal9555SlaveAddr;
+ I2cAddrMode = EfiI2CSevenBitAddrMode;
+
+ if (GpioNum < 8) {
+ SubAddr = RegBase;
+ GpioNumMask = (UINT8)(1 << GpioNum);
+ } else {
+ SubAddr = RegBase + 1;
+ GpioNumMask = (UINT8)(1 << (GpioNum - 8));
+ }
+
+ //
+ // Output port value always at 2nd byte in Data variable.
+ //
+ RegValuePtr = &Data[1];
+
+ //
+ // On read entry sub address at 2nd byte, on read exit output
+ // port value in 2nd byte.
+ //
+ Data[1] = SubAddr;
+ WriteLength = 1;
+ ReadLength = 1;
+ Status = I2cReadMultipleByte (
+ I2cDeviceAddr,
+ I2cAddrMode,
+ &WriteLength,
+ &ReadLength,
+ &Data[1]
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Adjust output port bit given callers request.
+ //
+ if (LogicOne) {
+ *RegValuePtr = *RegValuePtr | GpioNumMask;
+ } else {
+ *RegValuePtr = *RegValuePtr & ~(GpioNumMask);
+ }
+
+ //
+ // Update register. Sub address at 1st byte, value at 2nd byte.
+ //
+ WriteLength = 2;
+ Data[0] = SubAddr;
+ Status = I2cWriteMultipleByte (
+ I2cDeviceAddr,
+ I2cAddrMode,
+ &WriteLength,
+ Data
+ );
+ ASSERT_EFI_ERROR (Status);
+}
+
+/**
+Set the direction of Pcal9555 IO Expander GPIO pin.
+
+@param Pcal9555SlaveAddr I2c Slave address of Pcal9555 Io Expander.
+@param GpioNum Gpio direction to configure - values 0-7 for Port0
+and 8-15 for Port1.
+@param CfgAsInput If TRUE set pin direction as input else set as output.
+
+**/
+VOID
+EFIAPI
+PlatformPcal9555GpioSetDir (
+ IN CONST UINT32 Pcal9555SlaveAddr,
+ IN CONST UINT32 GpioNum,
+ IN CONST BOOLEAN CfgAsInput
+ )
+{
+ Pcal9555SetPortRegBit (
+ Pcal9555SlaveAddr,
+ GpioNum,
+ PCAL9555_REG_CFG_PORT0,
+ CfgAsInput
+ );
+}
+
+/**
+Set the level of Pcal9555 IO Expander GPIO high or low.
+
+@param Pcal9555SlaveAddr I2c Slave address of Pcal9555 Io Expander.
+@param GpioNum Gpio to change values 0-7 for Port0 and 8-15
+for Port1.
+@param HighLevel If TRUE set pin high else set pin low.
+
+**/
+VOID
+EFIAPI
+PlatformPcal9555GpioSetLevel (
+ IN CONST UINT32 Pcal9555SlaveAddr,
+ IN CONST UINT32 GpioNum,
+ IN CONST BOOLEAN HighLevel
+ )
+{
+ Pcal9555SetPortRegBit (
+ Pcal9555SlaveAddr,
+ GpioNum,
+ PCAL9555_REG_OUT_PORT0,
+ HighLevel
+ );
+}
+
+/**
+
+Enable pull-up/pull-down resistors of Pcal9555 GPIOs.
+
+@param Pcal9555SlaveAddr I2c Slave address of Pcal9555 Io Expander.
+@param GpioNum Gpio to change values 0-7 for Port0 and 8-15
+for Port1.
+
+**/
+VOID
+EFIAPI
+PlatformPcal9555GpioEnablePull (
+ IN CONST UINT32 Pcal9555SlaveAddr,
+ IN CONST UINT32 GpioNum
+ )
+{
+ Pcal9555SetPortRegBit (
+ Pcal9555SlaveAddr,
+ GpioNum,
+ PCAL9555_REG_PULL_EN_PORT0,
+ TRUE
+ );
+}
+
+/**
+
+Disable pull-up/pull-down resistors of Pcal9555 GPIOs.
+
+@param Pcal9555SlaveAddr I2c Slave address of Pcal9555 Io Expander.
+@param GpioNum Gpio to change values 0-7 for Port0 and 8-15
+for Port1.
+
+**/
+VOID
+EFIAPI
+PlatformPcal9555GpioDisablePull (
+ IN CONST UINT32 Pcal9555SlaveAddr,
+ IN CONST UINT32 GpioNum
+ )
+{
+ Pcal9555SetPortRegBit (
+ Pcal9555SlaveAddr,
+ GpioNum,
+ PCAL9555_REG_PULL_EN_PORT0,
+ FALSE
+ );
+}
+
+/**
+
+Get state of Pcal9555 GPIOs.
+
+@param Pcal9555SlaveAddr I2c Slave address of Pcal9555 Io Expander.
+@param GpioNum Gpio to change values 0-7 for Port0 and 8-15
+for Port1.
+
+@retval TRUE GPIO pin is high
+@retval FALSE GPIO pin is low
+**/
+BOOLEAN
+EFIAPI
+PlatformPcal9555GpioGetState (
+ IN CONST UINT32 Pcal9555SlaveAddr,
+ IN CONST UINT32 GpioNum
+ )
+{
+ return Pcal9555GetPortRegBit (Pcal9555SlaveAddr, GpioNum, PCAL9555_REG_IN_PORT0);
+}
+
+
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