/** @file
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Header file for GpioLib.
|
All function in this library is available for PEI, DXE, and SMM
|
|
@note: When GPIO pads are owned by ME Firmware, BIOS/host should not
|
attempt to access these GPIO Pads registers, registers value
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returned in this case will be 0xFF.
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _GPIO_LIB_H_
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#define _GPIO_LIB_H_
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#include <GpioConfig.h>
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typedef struct {
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GPIO_PAD GpioPad;
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GPIO_CONFIG GpioConfig;
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} GPIO_INIT_CONFIG;
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/**
|
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
|
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@param[in] NumberofItem Number of GPIO pads to be updated
|
@param[in] GpioInitTableAddress GPIO initialization table
|
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid group or pad number
|
**/
|
EFI_STATUS
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GpioConfigurePads (
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IN UINT32 NumberOfItems,
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IN GPIO_INIT_CONFIG *GpioInitTableAddress
|
);
|
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//
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// Functions for setting/getting multiple GpioPad settings
|
//
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|
/**
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This procedure will read multiple GPIO settings
|
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@param[in] GpioPad GPIO Pad
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@param[out] GpioData GPIO data structure
|
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
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**/
|
EFI_STATUS
|
GpioGetPadConfig (
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IN GPIO_PAD GpioPad,
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OUT GPIO_CONFIG *GpioData
|
);
|
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/**
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This procedure will configure multiple GPIO settings
|
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@param[in] GpioPad GPIO Pad
|
@param[in] GpioData GPIO data structure
|
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
|
**/
|
EFI_STATUS
|
GpioSetPadConfig (
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IN GPIO_PAD GpioPad,
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IN GPIO_CONFIG *GpioData
|
);
|
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//
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// Functions for setting/getting single GpioPad properties
|
//
|
|
/**
|
This procedure will set GPIO output level
|
|
@param[in] GpioPad GPIO pad
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@param[in] Value Output value
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0: OutputLow, 1: OutputHigh
|
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
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**/
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EFI_STATUS
|
GpioSetOutputValue (
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IN GPIO_PAD GpioPad,
|
IN UINT32 Value
|
);
|
|
/**
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This procedure will get GPIO output level
|
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@param[in] GpioPad GPIO pad
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@param[out] OutputVal GPIO Output value
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0: OutputLow, 1: OutputHigh
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
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**/
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EFI_STATUS
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GpioGetOutputValue (
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IN GPIO_PAD GpioPad,
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OUT UINT32 *OutputVal
|
);
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/**
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This procedure will get GPIO input level
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@param[in] GpioPad GPIO pad
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@param[out] InputVal GPIO Input value
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0: InputLow, 1: InputHigh
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
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**/
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EFI_STATUS
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GpioGetInputValue (
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IN GPIO_PAD GpioPad,
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OUT UINT32 *InputVal
|
);
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/**
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This procedure will get GPIO IOxAPIC interrupt number
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@param[in] GpioPad GPIO pad
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@param[out] IrqNum IRQ number
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
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**/
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EFI_STATUS
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GpioGetPadIoApicIrqNumber (
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IN GPIO_PAD GpioPad,
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OUT UINT32 *IrqNum
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);
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/**
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This procedure will configure GPIO input inversion
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@param[in] GpioPad GPIO pad
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@param[in] Value Value for GPIO input inversion
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0: No input inversion, 1: Invert input
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
|
**/
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EFI_STATUS
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GpioSetInputInversion (
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IN GPIO_PAD GpioPad,
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IN UINT32 Value
|
);
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/**
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This procedure will get GPIO pad input inversion value
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@param[in] GpioPad GPIO pad
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@param[out] InvertState GPIO inversion state
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0: No input inversion, 1: Inverted input
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
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**/
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EFI_STATUS
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GpioGetInputInversion (
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IN GPIO_PAD GpioPad,
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OUT UINT32 *InvertState
|
);
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/**
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This procedure will set GPIO interrupt settings
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@param[in] GpioPad GPIO pad
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@param[in] Value Value of Level/Edge
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use GPIO_INT_CONFIG as argument
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
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**/
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EFI_STATUS
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GpioSetPadInterruptConfig (
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IN GPIO_PAD GpioPad,
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IN GPIO_INT_CONFIG Value
|
);
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/**
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This procedure will set GPIO electrical settings
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@param[in] GpioPad GPIO pad
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@param[in] Value Value of termination
|
use GPIO_ELECTRICAL_CONFIG as argument
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
|
**/
|
EFI_STATUS
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GpioSetPadElectricalConfig (
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IN GPIO_PAD GpioPad,
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IN GPIO_ELECTRICAL_CONFIG Value
|
);
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/**
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This procedure will set GPIO Reset settings
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@param[in] GpioPad GPIO pad
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@param[in] Value Value for Pad Reset Configuration
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use GPIO_RESET_CONFIG as argument
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
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**/
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EFI_STATUS
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GpioSetPadResetConfig (
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IN GPIO_PAD GpioPad,
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IN GPIO_RESET_CONFIG Value
|
);
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/**
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This procedure will get GPIO Reset settings
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@param[in] GpioPad GPIO pad
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@param[in] Value Value of Pad Reset Configuration
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based on GPIO_RESET_CONFIG
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
|
**/
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EFI_STATUS
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GpioGetPadResetConfig (
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IN GPIO_PAD GpioPad,
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IN GPIO_RESET_CONFIG *Value
|
);
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/**
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This procedure will get GPIO Host Software Pad Ownership for certain group
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@param[in] Group GPIO group
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@param[in] DwNum Host Ownership register number for current group.
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For group which has less then 32 pads per group DwNum must be 0.
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@param[out] HostSwRegVal Value of Host Software Pad Ownership register
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Bit position - PadNumber
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Bit value - 0: ACPI Mode, 1: GPIO Driver mode
|
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid group or DwNum parameter number
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**/
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EFI_STATUS
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GpioGetHostSwOwnershipForGroupDw (
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IN GPIO_GROUP Group,
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IN UINT32 DwNum,
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OUT UINT32 *HostSwRegVal
|
);
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/**
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This procedure will get GPIO Host Software Pad Ownership for certain group
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@param[in] Group GPIO group
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@param[in] DwNum Host Ownership register number for current group
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For group which has less then 32 pads per group DwNum must be 0.
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@param[in] HostSwRegVal Value of Host Software Pad Ownership register
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Bit position - PadNumber
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Bit value - 0: ACPI Mode, 1: GPIO Driver mode
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid group or DwNum parameter number
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**/
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EFI_STATUS
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GpioSetHostSwOwnershipForGroupDw (
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IN GPIO_GROUP Group,
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IN UINT32 DwNum,
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IN UINT32 HostSwRegVal
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);
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/**
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This procedure will get Gpio Pad Host Software Ownership
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@param[in] GpioPad GPIO pad
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@param[out] PadHostSwOwn Value of Host Software Pad Owner
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0: ACPI Mode, 1: GPIO Driver mode
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
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**/
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EFI_STATUS
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GpioGetHostSwOwnershipForPad (
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IN GPIO_PAD GpioPad,
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OUT UINT32 *PadHostSwOwn
|
);
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/**
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This procedure will set Gpio Pad Host Software Ownership
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@param[in] GpioPad GPIO pad
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@param[in] PadHostSwOwn Pad Host Software Owner
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0: ACPI Mode, 1: GPIO Driver mode
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
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**/
|
EFI_STATUS
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GpioSetHostSwOwnershipForPad (
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IN GPIO_PAD GpioPad,
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IN UINT32 PadHostSwOwn
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);
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///
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/// Possible values of Pad Ownership
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/// If Pad is not under Host ownership then GPIO registers
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/// are not accessible by host (e.g. BIOS) and reading them
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/// will return 0xFFs.
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///
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typedef enum {
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GpioPadOwnHost = 0x0,
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GpioPadOwnCsme = 0x1,
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GpioPadOwnIsh = 0x2,
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} GPIO_PAD_OWN;
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/**
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This procedure will get Gpio Pad Ownership
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@param[in] GpioPad GPIO pad
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@param[out] PadOwnVal Value of Pad Ownership
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
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**/
|
EFI_STATUS
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GpioGetPadOwnership (
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IN GPIO_PAD GpioPad,
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OUT GPIO_PAD_OWN *PadOwnVal
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);
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/**
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This procedure will check state of Pad Config Lock for pads within one group
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@param[in] Group GPIO group
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@param[in] DwNum PadCfgLock register number for current group.
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For group which has less then 32 pads per group DwNum must be 0.
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@param[out] PadCfgLockRegVal Value of PadCfgLock register
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Bit position - PadNumber
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Bit value - 0: NotLocked, 1: Locked
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid group or DwNum parameter number
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**/
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EFI_STATUS
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GpioGetPadCfgLockForGroupDw (
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IN GPIO_GROUP Group,
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IN UINT32 DwNum,
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OUT UINT32 *PadCfgLockRegVal
|
);
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/**
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This procedure will check state of Pad Config Lock for selected pad
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@param[in] GpioPad GPIO pad
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@param[out] PadCfgLock PadCfgLock for selected pad
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0: NotLocked, 1: Locked
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_INVALID_PARAMETER Invalid GpioPad
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**/
|
EFI_STATUS
|
GpioGetPadCfgLock (
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IN GPIO_PAD GpioPad,
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OUT UINT32 *PadCfgLock
|
);
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/**
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This procedure will check state of Pad Config Tx Lock for pads within one group
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@param[in] Group GPIO group
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@param[in] DwNum PadCfgLockTx register number for current group.
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For group which has less then 32 pads per group DwNum must be 0.
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@param[out] PadCfgLockTxRegVal Value of PadCfgLockTx register
|
Bit position - PadNumber
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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 (
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IN GPIO_GROUP Group,
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IN UINT32 DwNum,
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OUT UINT32 *PadCfgLockTxRegVal
|
);
|
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/**
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This procedure will check state of Pad Config Tx Lock for selected pad
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@param[in] GpioPad GPIO pad
|
@param[out] PadCfgLock PadCfgLockTx for selected pad
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0: NotLockedTx, 1: LockedTx
|
|
@retval EFI_SUCCESS The function completed successfully
|
@retval EFI_INVALID_PARAMETER Invalid GpioPad
|
**/
|
EFI_STATUS
|
GpioGetPadCfgLockTx (
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IN GPIO_PAD GpioPad,
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OUT UINT32 *PadCfgLockTx
|
);
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/**
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This procedure will clear PadCfgLock for selected pads within one group.
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Unlocking a pad will cause an SMI (if enabled)
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@param[in] Group GPIO group
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@param[in] DwNum PadCfgLock register number for current group.
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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 (
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IN GPIO_GROUP Group,
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IN UINT32 DwNum,
|
IN UINT32 PadsToUnlock
|
);
|
|
/**
|
This procedure will clear PadCfgLock for selected pad.
|
Unlocking a pad will cause an SMI (if enabled)
|
|
@param[in] GpioPad GPIO pad
|
|
@retval EFI_SUCCESS The function completed successfully
|
@retval EFI_INVALID_PARAMETER Invalid GpioPad
|
**/
|
EFI_STATUS
|
GpioUnlockPadCfg (
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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 GpioPad
|
**/
|
EFI_STATUS
|
GpioLockPadCfg (
|
IN GPIO_PAD GpioPad
|
);
|
|
/**
|
This procedure will clear PadCfgLockTx for selected pads within one group.
|
Unlocking a pad will cause an SMI (if enabled)
|
|
@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.
|
Unlocking a pad will cause an SMI (if enabled)
|
|
@param[in] GpioPad GPIO pad
|
|
@retval EFI_SUCCESS The function completed successfully
|
@retval EFI_INVALID_PARAMETER Invalid GpioPad
|
**/
|
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 GpioPad
|
**/
|
EFI_STATUS
|
GpioLockPadCfgTx (
|
IN GPIO_PAD GpioPad
|
);
|
|
/**
|
This procedure will get Group to GPE mapping.
|
Refer to BWG and EDS for GPIO GPE information.
|
|
@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.
|
Refer to BWG and EDS for GPIO GPE information.
|
|
@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 GpioPad
|
**/
|
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 GpioPad
|
**/
|
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
|
**/
|
EFI_STATUS
|
GpioClearAllGpiSmiSts (
|
VOID
|
);
|
|
/**
|
This procedure is used to disable all GPI SMI
|
|
@retval EFI_SUCCESS The function completed successfully
|
**/
|
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 GpioPad
|
**/
|
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 GpioPad
|
**/
|
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 GpioPad
|
**/
|
EFI_STATUS
|
GpioGetGpiGpeSts (
|
IN GPIO_PAD GpioPad,
|
OUT UINT32* Data
|
);
|
|
#endif // _GPIO_LIB_H_
|
