amba_kmi.h
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上传日期:2009-04-28
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- /*
- * linux/include/asm-arm/hardware/amba_kmi.h
- *
- * Internal header file for AMBA KMI ports
- *
- * Copyright (C) 2000 Deep Blue Solutions Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- *
- * ---------------------------------------------------------------------------
- * From ARM PrimeCell(tm) PS2 Keyboard/Mouse Interface (PL050) Technical
- * Reference Manual - ARM DDI 0143B - see http://www.arm.com/
- * ---------------------------------------------------------------------------
- */
- #ifndef ASM_ARM_HARDWARE_AMBA_KMI_H
- #define ASM_ARM_HARDWARE_AMBA_KMI_H
- /*
- * KMI control register:
- * KMICR_TYPE 0 = PS2/AT mode, 1 = No line control bit mode
- * KMICR_RXINTREN 1 = enable RX interrupts
- * KMICR_TXINTREN 1 = enable TX interrupts
- * KMICR_EN 1 = enable KMI
- * KMICR_FD 1 = force KMI data low
- * KMICR_FC 1 = force KMI clock low
- */
- #define KMICR (KMI_BASE + 0x00)
- #define KMICR_TYPE (1 << 5)
- #define KMICR_RXINTREN (1 << 4)
- #define KMICR_TXINTREN (1 << 3)
- #define KMICR_EN (1 << 2)
- #define KMICR_FD (1 << 1)
- #define KMICR_FC (1 << 0)
- /*
- * KMI status register:
- * KMISTAT_TXEMPTY 1 = transmitter register empty
- * KMISTAT_TXBUSY 1 = currently sending data
- * KMISTAT_RXFULL 1 = receiver register ready to be read
- * KMISTAT_RXBUSY 1 = currently receiving data
- * KMISTAT_RXPARITY parity of last databyte received
- * KMISTAT_IC current level of KMI clock input
- * KMISTAT_ID current level of KMI data input
- */
- #define KMISTAT (KMI_BASE + 0x04)
- #define KMISTAT_TXEMPTY (1 << 6)
- #define KMISTAT_TXBUSY (1 << 5)
- #define KMISTAT_RXFULL (1 << 4)
- #define KMISTAT_RXBUSY (1 << 3)
- #define KMISTAT_RXPARITY (1 << 2)
- #define KMISTAT_IC (1 << 1)
- #define KMISTAT_ID (1 << 0)
- /*
- * KMI data register
- */
- #define KMIDATA (KMI_BASE + 0x08)
- /*
- * KMI clock divisor: to generate 8MHz internal clock
- * div = (ref / 8MHz) - 1; 0 <= div <= 15
- */
- #define KMICLKDIV (KMI_BASE + 0x0c)
- /*
- * KMI interrupt register:
- * KMIIR_TXINTR 1 = transmit interrupt asserted
- * KMIIR_RXINTR 1 = receive interrupt asserted
- */
- #define KMIIR (KMI_BASE + 0x10)
- #define KMIIR_TXINTR (1 << 1)
- #define KMIIR_RXINTR (1 << 0)
- /*
- * The size of the KMI primecell
- */
- #define KMI_SIZE (0x100)
- #endif