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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * linux/include/asm-arm/hardware/amba_kmi.h4 *5 * Internal header file for AMBA KMI ports6 *7 * Copyright (C) 2000 Deep Blue Solutions Ltd.8 *9 * ---------------------------------------------------------------------------10 * From ARM PrimeCell(tm) PS2 Keyboard/Mouse Interface (PL050) Technical11 * Reference Manual - ARM DDI 0143B - see http://www.arm.com/12 * ---------------------------------------------------------------------------13 */14#ifndef ASM_ARM_HARDWARE_AMBA_KMI_H15#define ASM_ARM_HARDWARE_AMBA_KMI_H16 17/*18 * KMI control register:19 * KMICR_TYPE 0 = PS2/AT mode, 1 = No line control bit mode20 * KMICR_RXINTREN 1 = enable RX interrupts21 * KMICR_TXINTREN 1 = enable TX interrupts22 * KMICR_EN 1 = enable KMI23 * KMICR_FD 1 = force KMI data low24 * KMICR_FC 1 = force KMI clock low25 */26#define KMICR (KMI_BASE + 0x00)27#define KMICR_TYPE (1 << 5)28#define KMICR_RXINTREN (1 << 4)29#define KMICR_TXINTREN (1 << 3)30#define KMICR_EN (1 << 2)31#define KMICR_FD (1 << 1)32#define KMICR_FC (1 << 0)33 34/*35 * KMI status register:36 * KMISTAT_TXEMPTY 1 = transmitter register empty37 * KMISTAT_TXBUSY 1 = currently sending data38 * KMISTAT_RXFULL 1 = receiver register ready to be read39 * KMISTAT_RXBUSY 1 = currently receiving data40 * KMISTAT_RXPARITY parity of last databyte received41 * KMISTAT_IC current level of KMI clock input42 * KMISTAT_ID current level of KMI data input43 */44#define KMISTAT (KMI_BASE + 0x04)45#define KMISTAT_TXEMPTY (1 << 6)46#define KMISTAT_TXBUSY (1 << 5)47#define KMISTAT_RXFULL (1 << 4)48#define KMISTAT_RXBUSY (1 << 3)49#define KMISTAT_RXPARITY (1 << 2)50#define KMISTAT_IC (1 << 1)51#define KMISTAT_ID (1 << 0)52 53/*54 * KMI data register55 */56#define KMIDATA (KMI_BASE + 0x08)57 58/*59 * KMI clock divisor: to generate 8MHz internal clock60 * div = (ref / 8MHz) - 1; 0 <= div <= 1561 */62#define KMICLKDIV (KMI_BASE + 0x0c)63 64/*65 * KMI interrupt register:66 * KMIIR_TXINTR 1 = transmit interrupt asserted67 * KMIIR_RXINTR 1 = receive interrupt asserted68 */69#define KMIIR (KMI_BASE + 0x10)70#define KMIIR_TXINTR (1 << 1)71#define KMIIR_RXINTR (1 << 0)72 73/*74 * The size of the KMI primecell75 */76#define KMI_SIZE (0x100)77 78#endif79