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/*++
Copyright (c) 1999 - 2014, Intel Corporation. All rights reserved
SPDX-License-Identifier: BSD-2-Clause-Patent
Module Name:
I2CRegs.h
Abstract:
Register Definitions for I2C Driver/PEIM.
--*/
#include <Uefi.h>
#include <Library/IoLib.h>
#ifndef I2C_REGS_A0_H
#define I2C_REGS_A0_H
//
// FIFO write workaround value.
//
#define FIFO_WRITE_DELAY 2
//
// MMIO Register Definitions
//
#define R_IC_CON ( 0x00) // I2C Control
#define B_IC_RESTART_EN BIT5
#define B_IC_SLAVE_DISABLE BIT6
#define V_SPEED_STANDARD 0x02
#define V_SPEED_FAST 0x04
#define V_SPEED_HIGH 0x06
#define B_MASTER_MODE BIT0
#define R_IC_TAR ( 0x04) // I2C Target Address
#define IC_TAR_10BITADDR_MASTER BIT12
#define R_IC_SAR ( 0x08) // I2C Slave Address
#define R_IC_HS_MADDR ( 0x0C) // I2C HS MasterMode Code Address
#define R_IC_DATA_CMD ( 0x10) // I2C Rx/Tx Data Buffer and Command
#define B_READ_CMD BIT8 // 1 = read, 0 = write
#define B_CMD_STOP BIT9 // 1 = STOP
#define B_CMD_RESTART BIT10 // 1 = IC_RESTART_EN
#define V_WRITE_CMD_MASK ( 0xFF)
#define R_IC_SS_SCL_HCNT ( 0x14) // Standard Speed I2C Clock SCL High Count
#define R_IC_SS_SCL_LCNT ( 0x18) // Standard Speed I2C Clock SCL Low Count
#define R_IC_FS_SCL_HCNT ( 0x1C) // Full Speed I2C Clock SCL High Count
#define R_IC_FS_SCL_LCNT ( 0x20) // Full Speed I2C Clock SCL Low Count
#define R_IC_HS_SCL_HCNT ( 0x24) // High Speed I2C Clock SCL High Count
#define R_IC_HS_SCL_LCNT ( 0x28) // High Speed I2C Clock SCL Low Count
#define R_IC_INTR_STAT ( 0x2C) // I2C Inetrrupt Status
#define R_IC_INTR_MASK ( 0x30) // I2C Interrupt Mask
#define I2C_INTR_GEN_CALL BIT11 // General call received
#define I2C_INTR_START_DET BIT10
#define I2C_INTR_STOP_DET BIT9
#define I2C_INTR_ACTIVITY BIT8
#define I2C_INTR_TX_ABRT BIT6 // Set on NACK
#define I2C_INTR_TX_EMPTY BIT4
#define I2C_INTR_TX_OVER BIT3
#define I2C_INTR_RX_FULL BIT2 // Data bytes in RX FIFO over threshold
#define I2C_INTR_RX_OVER BIT1
#define I2C_INTR_RX_UNDER BIT0
#define R_IC_RAW_INTR_STAT ( 0x34) // I2C Raw Interrupt Status
#define R_IC_RX_TL ( 0x38) // I2C Receive FIFO Threshold
#define R_IC_TX_TL ( 0x3C) // I2C Transmit FIFO Threshold
#define R_IC_CLR_INTR ( 0x40) // Clear Combined and Individual Interrupts
#define R_IC_CLR_RX_UNDER ( 0x44) // Clear RX_UNDER Interrupt
#define R_IC_CLR_RX_OVER ( 0x48) // Clear RX_OVERinterrupt
#define R_IC_CLR_TX_OVER ( 0x4C) // Clear TX_OVER interrupt
#define R_IC_CLR_RD_REQ ( 0x50) // Clear RD_REQ interrupt
#define R_IC_CLR_TX_ABRT ( 0x54) // Clear TX_ABRT interrupt
#define R_IC_CLR_RX_DONE ( 0x58) // Clear RX_DONE interrupt
#define R_IC_CLR_ACTIVITY ( 0x5C) // Clear ACTIVITY interrupt
#define R_IC_CLR_STOP_DET ( 0x60) // Clear STOP_DET interrupt
#define R_IC_CLR_START_DET ( 0x64) // Clear START_DET interrupt
#define R_IC_CLR_GEN_CALL ( 0x68) // Clear GEN_CALL interrupt
#define R_IC_ENABLE ( 0x6C) // I2C Enable
#define R_IC_STATUS ( 0x70) // I2C Status
#define R_IC_SDA_HOLD ( 0x7C) // I2C IC_DEFAULT_SDA_HOLD//16bits
#define STAT_MST_ACTIVITY BIT5 // Master FSM Activity Status.
#define STAT_RFF BIT4 // RX FIFO is completely full
#define STAT_RFNE BIT3 // RX FIFO is not empty
#define STAT_TFE BIT2 // TX FIFO is completely empty
#define STAT_TFNF BIT1 // TX FIFO is not full
#define R_IC_TXFLR ( 0x74) // Transmit FIFO Level Register
#define R_IC_RXFLR ( 0x78) // Receive FIFO Level Register
#define R_IC_TX_ABRT_SOURCE ( 0x80) // I2C Transmit Abort Status Register
#define R_IC_SLV_DATA_NACK_ONLY ( 0x84) // Generate SLV_DATA_NACK Register
#define R_IC_DMA_CR ( 0x88) // DMA Control Register
#define R_IC_DMA_TDLR ( 0x8C) // DMA Transmit Data Level
#define R_IC_DMA_RDLR ( 0x90) // DMA Receive Data Level
#define R_IC_SDA_SETUP ( 0x94) // I2C SDA Setup Register
#define R_IC_ACK_GENERAL_CALL ( 0x98) // I2C ACK General Call Register
#define R_IC_ENABLE_STATUS ( 0x9C) // I2C Enable Status Register
#define R_IC_COMP_PARAM ( 0xF4) // Component Parameter Register
#define R_IC_COMP_VERSION ( 0xF8) // Component Version ID
#define R_IC_COMP_TYPE ( 0xFC) // Component Type
#define R_IC_CLK_GATE ( 0xC0) // Clock Gate
#define I2C_SS_SCL_HCNT_VALUE_100M 0x1DD
#define I2C_SS_SCL_LCNT_VALUE_100M 0x1E4
#define I2C_FS_SCL_HCNT_VALUE_100M 0x54
#define I2C_FS_SCL_LCNT_VALUE_100M 0x9a
#define I2C_HS_SCL_HCNT_VALUE_100M 0x7
#define I2C_HS_SCL_LCNT_VALUE_100M 0xE
#define IC_TAR_10BITADDR_MASTER BIT12
#define FIFO_SIZE 32
#define R_IC_INTR_STAT ( 0x2C) // I2c Inetrrupt Status
#define R_IC_INTR_MASK ( 0x30) // I2c Interrupt Mask
#define I2C_INTR_GEN_CALL BIT11 // General call received
#define I2C_INTR_START_DET BIT10
#define I2C_INTR_STOP_DET BIT9
#define I2C_INTR_ACTIVITY BIT8
#define I2C_INTR_TX_ABRT BIT6 // Set on NACK
#define I2C_INTR_TX_EMPTY BIT4
#define I2C_INTR_TX_OVER BIT3
#define I2C_INTR_RX_FULL BIT2 // Data bytes in RX FIFO over threshold
#define I2C_INTR_RX_OVER BIT1
#define I2C_INTR_RX_UNDER BIT0
EFI_STATUS ProgramPciLpssI2C (
IN UINT8 BusNo
);
EFI_STATUS ByteReadI2C_Basic(
IN UINT8 BusNo,
IN UINT8 SlaveAddress,
IN UINTN ReadBytes,
OUT UINT8 *ReadBuffer,
IN UINT8 Start,
IN UINT8 End
);
EFI_STATUS ByteWriteI2C_Basic(
IN UINT8 BusNo,
IN UINT8 SlaveAddress,
IN UINTN WriteBytes,
IN UINT8 *WriteBuffer,
IN UINT8 Start,
IN UINT8 End
);
EFI_STATUS ByteReadI2C(
IN UINT8 BusNo,
IN UINT8 SlaveAddress,
IN UINT8 Offset,
IN UINTN ReadBytes,
OUT UINT8 *ReadBuffer
);
EFI_STATUS ByteWriteI2C(
IN UINT8 BusNo,
IN UINT8 SlaveAddress,
IN UINT8 Offset,
IN UINTN WriteBytes,
IN UINT8 *WriteBuffer
);
#endif // I2C_REGS_A0_H
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