include/asm-mips/mips-boards/saa9730_uart.h

   1 /*
   2  * Carsten Langgaard, carstenl@mips.com
   3  * Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
   4  *
   5  * ########################################################################
   6  *
   7  *  This program is free software; you can distribute it and/or modify it
   8  *  under the terms of the GNU General Public License (Version 2) as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope it will be useful, but WITHOUT
  12  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  *  for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License along
  17  *  with this program; if not, write to the Free Software Foundation, Inc.,
  18  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  19  *
  20  * ########################################################################
  21  *
  22  * Register definitions for the UART part of the Philips SAA9730 chip.
  23  *
  24  */
  25
  26 #ifndef SAA9730_UART_H
  27 #define SAA9730_UART_H
  28
  29 /* The SAA9730 UART register map, as seen via the PCI bus */
  30
  31 #define SAA9730_UART_REGS_ADDR  0x21800
  32
  33 struct uart_saa9730_regmap {
  34         volatile unsigned char Thr_Rbr;
  35         volatile unsigned char Ier;
  36         volatile unsigned char Iir_Fcr;
  37         volatile unsigned char Lcr;
  38         volatile unsigned char Mcr;
  39         volatile unsigned char Lsr;
  40         volatile unsigned char Msr;
  41         volatile unsigned char Scr;
  42         volatile unsigned char BaudDivLsb;
  43         volatile unsigned char BaudDivMsb;
  44         volatile unsigned char Junk0;
  45         volatile unsigned char Junk1;
  46         volatile unsigned int Config;           /* 0x2180c */
  47         volatile unsigned int TxStart;          /* 0x21810 */
  48         volatile unsigned int TxLength;         /* 0x21814 */
  49         volatile unsigned int TxCounter;        /* 0x21818 */
  50         volatile unsigned int RxStart;          /* 0x2181c */
  51         volatile unsigned int RxLength;         /* 0x21820 */
  52         volatile unsigned int RxCounter;        /* 0x21824 */
  53 };
  54 typedef volatile struct uart_saa9730_regmap t_uart_saa9730_regmap;
  55
  56 /*
  57  * Only a subset of the UART control bits are defined here,
  58  * enough to make the serial debug port work.
  59  */
  60
  61 #define SAA9730_LCR_DATA8       0x03
  62
  63 #define SAA9730_MCR_DTR         0x01
  64 #define SAA9730_MCR_RTS         0x02
  65
  66 #define SAA9730_LSR_DR          0x01
  67 #define SAA9730_LSR_THRE        0x20
  68
  69 #endif /* !(SAA9730_UART_H) */