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|
/** @file
Copyright (c) 2018, 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 that 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 _GPIO_LIB_H_
#define _GPIO_LIB_H_
#include <GpioConfig.h>
#include <Uefi/UefiBaseType.h>
typedef struct {
GPIO_PAD GpioPad;
GPIO_CONFIG GpioConfig;
} GPIO_INIT_CONFIG;
/**
This procedure will initialize multiple GPIO pins. Use GPIO_INIT_CONFIG structure.
Structure contains fields that can be used to configure each pad.
Pad not configured using GPIO_INIT_CONFIG will be left with hardware default values.
Separate fields could be set to hardware default if it does not matter, except
GpioPad and PadMode.
Some GpioPads are configured and switched to native mode by RC, those include:
SerialIo pins, ISH pins, ClkReq Pins
@param[in] NumberofItem Number of GPIO pads to be updated
@param[in] GpioInitTableAddress GPIO initialization table
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioConfigurePads (
IN UINT32 NumberOfItems,
IN GPIO_INIT_CONFIG *GpioInitTableAddress
);
//
// Functions for setting/getting multiple GpioPad settings
//
/**
This procedure will read multiple GPIO settings
@param[in] GpioPad GPIO Pad
@param[out] GpioData GPIO data structure
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioGetPadConfig (
IN GPIO_PAD GpioPad,
OUT GPIO_CONFIG *GpioData
);
/**
This procedure will configure multiple GPIO settings
@param[in] GpioPad GPIO Pad
@param[in] GpioData GPIO data structure
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioSetPadConfig (
IN GPIO_PAD GpioPad,
IN GPIO_CONFIG *GpioData
);
//
// Functions for setting/getting single GpioPad properties
//
/**
This procedure will set GPIO output level
@param[in] GpioPad GPIO pad
@param[in] Value Output value
0: OutputLow, 1: OutputHigh
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioSetOutputValue (
IN GPIO_PAD GpioPad,
IN UINT32 Value
);
/**
This procedure will get GPIO output level
@param[in] GpioPad GPIO pad
@param[out] OutputVal GPIO Output value
0: OutputLow, 1: OutputHigh
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioGetOutputValue (
IN GPIO_PAD GpioPad,
OUT UINT32 *OutputVal
);
/**
This procedure will get GPIO input level
@param[in] GpioPad GPIO pad
@param[out] InputVal GPIO Input value
0: InputLow, 1: InputHigh
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioGetInputValue (
IN GPIO_PAD GpioPad,
OUT UINT32 *InputVal
);
/**
This procedure will get GPIO IOxAPIC interrupt number
@param[in] GpioPad GPIO pad
@param[out] IrqNum IRQ number
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioGetPadIoApicIrqNumber (
IN GPIO_PAD GpioPad,
OUT UINT32 *IrqNum
);
/**
This procedure will configure GPIO input inversion
@param[in] GpioPad GPIO pad
@param[in] Value Value for GPIO input inversion
0: No input inversion, 1: Invert input
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioSetInputInversion (
IN GPIO_PAD GpioPad,
IN UINT32 Value
);
/**
This procedure will get GPIO pad input inversion value
@param[in] GpioPad GPIO pad
@param[out] InvertState GPIO inversion state
0: No input inversion, 1: Inverted input
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioGetInputInversion (
IN GPIO_PAD GpioPad,
OUT UINT32 *InvertState
);
/**
This procedure will set GPIO interrupt settings
@param[in] GpioPad GPIO pad
@param[in] Value Value of Level/Edge
use GPIO_INT_CONFIG as argument
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioSetPadInterruptConfig (
IN GPIO_PAD GpioPad,
IN GPIO_INT_CONFIG Value
);
/**
This procedure will set GPIO electrical settings
@param[in] GpioPad GPIO pad
@param[in] Value Value of termination
use GPIO_ELECTRICAL_CONFIG as argument
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioSetPadElectricalConfig (
IN GPIO_PAD GpioPad,
IN GPIO_ELECTRICAL_CONFIG Value
);
/**
This procedure will set GPIO Reset settings
@param[in] GpioPad GPIO pad
@param[in] Value Value for Pad Reset Configuration
use GPIO_RESET_CONFIG as argument
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioSetPadResetConfig (
IN GPIO_PAD GpioPad,
IN GPIO_RESET_CONFIG Value
);
/**
This procedure will get GPIO Reset settings
@param[in] GpioPad GPIO pad
@param[in] Value Value of Pad Reset Configuration
based on GPIO_RESET_CONFIG
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioGetPadResetConfig (
IN GPIO_PAD GpioPad,
IN GPIO_RESET_CONFIG *Value
);
/**
This procedure will get GPIO Host Software Pad Ownership for certain group
@param[in] Group GPIO group
@param[in] DwNum Host Ownership register number for current group.
For group which has less then 32 pads per group DwNum must be 0.
@param[out] HostSwRegVal Value of Host Software Pad Ownership register
Bit position - PadNumber
Bit value - 0: ACPI Mode, 1: GPIO Driver mode
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or DwNum parameter number
**/
EFI_STATUS
GpioGetHostSwOwnershipForGroupDw (
IN GPIO_GROUP Group,
IN UINT32 DwNum,
OUT UINT32 *HostSwRegVal
);
/**
This procedure will get GPIO Host Software Pad Ownership for certain group
@param[in] Group GPIO group
@param[in] DwNum Host Ownership register number for current group
For group which has less then 32 pads per group DwNum must be 0.
@param[in] HostSwRegVal Value of Host Software Pad Ownership register
Bit position - PadNumber
Bit value - 0: ACPI Mode, 1: GPIO Driver mode
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or DwNum parameter number
**/
EFI_STATUS
GpioSetHostSwOwnershipForGroupDw (
IN GPIO_GROUP Group,
IN UINT32 DwNum,
IN UINT32 HostSwRegVal
);
/**
This procedure will get Gpio Pad Host Software Ownership
@param[in] GpioPad GPIO pad
@param[out] PadHostSwOwn Value of Host Software Pad Owner
0: ACPI Mode, 1: GPIO Driver mode
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioGetHostSwOwnershipForPad (
IN GPIO_PAD GpioPad,
OUT UINT32 *PadHostSwOwn
);
/**
This procedure will set Gpio Pad Host Software Ownership
@param[in] GpioPad GPIO pad
@param[in] PadHostSwOwn Pad Host Software Owner
0: ACPI Mode, 1: GPIO Driver mode
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioSetHostSwOwnershipForPad (
IN GPIO_PAD GpioPad,
IN UINT32 PadHostSwOwn
);
//
// Possible values of Pad Ownership
//
typedef enum {
GpioPadOwnHost = 0x0,
GpioPadOwnCsme = 0x1,
GpioPadOwnIsh = 0x2,
} GPIO_PAD_OWN;
/**
This procedure will get Gpio Pad Ownership
@param[in] GpioPad GPIO pad
@param[out] PadOwnVal Value of Pad Ownership
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioGetPadOwnership (
IN GPIO_PAD GpioPad,
OUT GPIO_PAD_OWN *PadOwnVal
);
/**
This procedure will check state of Pad Config Lock for pads within one group
@param[in] Group GPIO group
@param[in] DwNum PadCfgLock register number for current group.
For group which has less then 32 pads per group DwNum must be 0.
@param[out] PadCfgLockRegVal Value of PadCfgLock register
Bit position - PadNumber
Bit value - 0: NotLocked, 1: Locked
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or DwNum parameter number
**/
EFI_STATUS
GpioGetPadCfgLockForGroupDw (
IN GPIO_GROUP Group,
IN UINT32 DwNum,
OUT UINT32 *PadCfgLockRegVal
);
/**
This procedure will check state of Pad Config Lock for selected pad
@param[in] GpioPad GPIO pad
@param[out] PadCfgLock PadCfgLock for selected pad
0: NotLocked, 1: Locked
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioGetPadCfgLock (
IN GPIO_PAD GpioPad,
OUT UINT32 *PadCfgLock
);
/**
This procedure will check state of Pad Config Tx Lock for pads within one group
@param[in] Group GPIO group
@param[in] DwNum PadCfgLockTx register number for current group.
For group which has less then 32 pads per group DwNum must be 0.
@param[out] PadCfgLockTxRegVal Value of PadCfgLockTx register
Bit position - PadNumber
Bit value - 0: NotLockedTx, 1: LockedTx
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or DwNum parameter number
**/
EFI_STATUS
GpioGetPadCfgLockTxForGroupDw (
IN GPIO_GROUP Group,
IN UINT32 DwNum,
OUT UINT32 *PadCfgLockTxRegVal
);
/**
This procedure will check state of Pad Config Tx Lock for selected pad
@param[in] GpioPad GPIO pad
@param[out] PadCfgLock PadCfgLockTx for selected pad
0: NotLockedTx, 1: LockedTx
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioGetPadCfgLockTx (
IN GPIO_PAD GpioPad,
OUT UINT32 *PadCfgLockTx
);
/**
This procedure will clear PadCfgLock for selected pads within one group.
This function should be used only inside SMI.
@param[in] Group GPIO group
@param[in] DwNum PadCfgLock register number for current group.
For group which has less then 32 pads per group DwNum must be 0.
@param[in] PadsToUnlock Bitmask for pads which are going to be unlocked,
Bit position - PadNumber
Bit value - 0: DoNotUnlock, 1: Unlock
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioUnlockPadCfgForGroupDw (
IN GPIO_GROUP Group,
IN UINT32 DwNum,
IN UINT32 PadsToUnlock
);
/**
This procedure will clear PadCfgLock for selected pad.
This function should be used only inside SMI.
@param[in] GpioPad GPIO pad
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioUnlockPadCfg (
IN GPIO_PAD GpioPad
);
/**
This procedure will set PadCfgLock for selected pads within one group
@param[in] Group GPIO group
@param[in] DwNum PadCfgLock register number for current group.
For group which has less then 32 pads per group DwNum must be 0.
@param[in] PadsToLock Bitmask for pads which are going to be locked,
Bit position - PadNumber
Bit value - 0: DoNotLock, 1: Lock
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or DwNum parameter number
**/
EFI_STATUS
GpioLockPadCfgForGroupDw (
IN GPIO_GROUP Group,
IN UINT32 DwNum,
IN UINT32 PadsToLock
);
/**
This procedure will set PadCfgLock for selected pad
@param[in] GpioPad GPIO pad
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioLockPadCfg (
IN GPIO_PAD GpioPad
);
/**
This procedure will clear PadCfgLockTx for selected pads within one group.
This function should be used only inside SMI.
@param[in] Group GPIO group
@param[in] DwNum PadCfgLockTx register number for current group.
For group which has less then 32 pads per group DwNum must be 0.
@param[in] PadsToUnlockTx Bitmask for pads which are going to be unlocked,
Bit position - PadNumber
Bit value - 0: DoNotUnLockTx, 1: LockTx
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioUnlockPadCfgTxForGroupDw (
IN GPIO_GROUP Group,
IN UINT32 DwNum,
IN UINT32 PadsToUnlockTx
);
/**
This procedure will clear PadCfgLockTx for selected pad.
This function should be used only inside SMI.
@param[in] GpioPad GPIO pad
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioUnlockPadCfgTx (
IN GPIO_PAD GpioPad
);
/**
This procedure will set PadCfgLockTx for selected pads within one group
@param[in] Group GPIO group
@param[in] DwNum PadCfgLock register number for current group.
For group which has less then 32 pads per group DwNum must be 0.
@param[in] PadsToLockTx Bitmask for pads which are going to be locked,
Bit position - PadNumber
Bit value - 0: DoNotLockTx, 1: LockTx
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or DwNum parameter number
**/
EFI_STATUS
GpioLockPadCfgTxForGroupDw (
IN GPIO_GROUP Group,
IN UINT32 DwNum,
IN UINT32 PadsToLockTx
);
/**
This procedure will set PadCfgLockTx for selected pad
@param[in] GpioPad GPIO pad
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioLockPadCfgTx (
IN GPIO_PAD GpioPad
);
/**
This procedure will get Group to GPE mapping.
@param[out] GroupToGpeDw0 GPIO group to be mapped to GPE_DW0
@param[out] GroupToGpeDw1 GPIO group to be mapped to GPE_DW1
@param[out] GroupToGpeDw2 GPIO group to be mapped to GPE_DW2
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioGetGroupToGpeDwX (
IN GPIO_GROUP *GroupToGpeDw0,
IN GPIO_GROUP *GroupToGpeDw1,
IN GPIO_GROUP *GroupToGpeDw2
);
/**
This procedure will set Group to GPE mapping.
@param[in] GroupToGpeDw0 GPIO group to be mapped to GPE_DW0
@param[in] GroupToGpeDw1 GPIO group to be mapped to GPE_DW1
@param[in] GroupToGpeDw2 GPIO group to be mapped to GPE_DW2
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioSetGroupToGpeDwX (
IN GPIO_GROUP GroupToGpeDw0,
IN GPIO_GROUP GroupToGpeDw1,
IN GPIO_GROUP GroupToGpeDw2
);
/**
This procedure will get GPE number for provided GpioPad.
PCH allows to configure mapping between GPIO groups and related GPE (GpioSetGroupToGpeDwX())
what results in the fact that certain Pad can cause different General Purpose Event. Only three
GPIO groups can be mapped to cause unique GPE (1-tier), all others groups will be under one common
event (GPE_111 for 2-tier).
1-tier:
Returned GpeNumber is in range <0,95>. GpioGetGpeNumber() can be used
to determine what _LXX ACPI method would be called on event on selected GPIO pad
2-tier:
Returned GpeNumber is 0x6F (111). All GPIO pads which are not mapped to 1-tier GPE
will be under one master GPE_111 which is linked to _L6F ACPI method. If it is needed to determine
what Pad from 2-tier has caused the event, _L6F method should check GPI_GPE_STS and GPI_GPE_EN
registers for all GPIO groups not mapped to 1-tier GPE.
@param[in] GpioPad GPIO pad
@param[out] GpeNumber GPE number
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioGetGpeNumber (
IN GPIO_PAD GpioPad,
OUT UINT32 *GpeNumber
);
/**
This procedure is used to clear SMI STS for a specified Pad
@param[in] GpioPad GPIO pad
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioClearGpiSmiSts (
IN GPIO_PAD GpioPad
);
/**
This procedure is used by Smi Dispatcher and will clear
all GPI SMI Status bits
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioClearAllGpiSmiSts (
VOID
);
/**
This procedure is used to disable all GPI SMI
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioDisableAllGpiSmi (
VOID
);
/**
This procedure is used to register GPI SMI dispatch function.
@param[in] GpioPad GPIO pad
@param[out] GpiNum GPI number
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioGetGpiSmiNum (
IN GPIO_PAD GpioPad,
OUT UINTN *GpiNum
);
/**
This procedure is used to check GPIO inputs belongs to 2 tier or 1 tier architecture
@param[in] GpioPad GPIO pad
@retval Data 0 means 1-tier, 1 means 2-tier
**/
BOOLEAN
GpioCheckFor2Tier (
IN GPIO_PAD GpioPad
);
/**
This procedure is used to clear GPE STS for a specified GpioPad
@param[in] GpioPad GPIO pad
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioClearGpiGpeSts (
IN GPIO_PAD GpioPad
);
/**
This procedure is used to read GPE STS for a specified Pad
@param[in] GpioPad GPIO pad
@param[out] Data GPE STS data
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioGetGpiGpeSts (
IN GPIO_PAD GpioPad,
OUT UINT32* Data
);
/**
This procedure will set GPIO Input Rout SCI
@param[in] GpioPad GPIO pad
@param[in] Value Value for GPIRoutSCI
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioSetGpiRoutSci (
IN GPIO_PAD GpioPad,
IN UINT32 Value
);
/**
This procedure will set GPIO Input Rout SMI
@param[in] GpioPad GPIO pad
@param[in] Value Value for GPIRoutSMI
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioSetGpiRoutSmi (
IN GPIO_PAD GpioPad,
IN UINT32 Value
);
/**
This procedure will set GPI SMI Enable setting for selected pad
@param[in] GpioPad GPIO pad
@param[in] PadGpiSmiEn GPI SMI Enable setting for selected pad
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioSetGpiSmiPadEn (
IN GPIO_PAD GpioPad,
IN UINT32 PadGpiSmiEn
);
/**
This procedure will set GPI General Purpose Event Enable setting for selected pad
@param[in] GpioPad GPIO pad
@param[in] PadGpiGpeEn GPI General Purpose Event Enable setting for selected pad
@retval EFI_SUCCESS The function completed successfully
@retval EFI_INVALID_PARAMETER Invalid group or pad number
**/
EFI_STATUS
GpioSetGpiGpePadEn (
IN GPIO_PAD GpioPad,
IN UINT32 PadGpiGpeEn
);
/**
Locks GPIO pads according to GPIO_INIT_CONFIG array from
gPlatformGpioConfigGuid HOB. Only locking is applied and no other GPIO pad
configuration is changed.
@retval EFI_SUCCESS The function completed successfully
@retval EFI_NOT_FOUND gPlatformGpioConfigGuid not found
**/
EFI_STATUS
GpioLockGpios (
VOID
);
/**
Unlocks all PCH GPIO pads
@retval None
**/
VOID
GpioUnlockAllGpios (
VOID
);
#endif // _GPIO_LIB_H_
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