drivers/s3c4510b_uart.h

   1 #ifndef __UART_H
   2 #define __UART_H
   3
   4 /*
   5  * Copyright (c) 2004   Cucy Systems (http://www.cucy.com)
   6  * Curt Brune <curt@cucy.com>
   7  *
   8  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24  * MA 02111-1307 USA
  25  *
  26  * Description:   S3C4510B UART register layout
  27  */
  28
  29 /* UART LINE CONTROL register */
  30 typedef struct __BF_UART_LINE_CTRL {
  31         u32    wordLen: 2;
  32         u32      nStop: 1;
  33         u32     parity: 3;
  34         u32        clk: 1;
  35         u32  infra_red: 1;
  36         u32     unused:24;
  37 } BF_UART_LINE_CTRL;
  38
  39 typedef union _UART_LINE_CTRL {
  40         u32               ui;
  41         BF_UART_LINE_CTRL bf;
  42 } UART_LINE_CTRL;
  43
  44 /* UART CONTROL register */
  45 typedef struct __BF_UART_CTRL {
  46         u32     rxMode: 2;
  47         u32      rxIrq: 1;
  48         u32     txMode: 2;
  49         u32        DSR: 1;
  50         u32  sendBreak: 1;
  51         u32   loopBack: 1;
  52         u32     unused:24;
  53 } BF_UART_CTRL;
  54
  55 typedef union _UART_CTRL {
  56         u32            ui;
  57         BF_UART_CTRL   bf;
  58 } UART_CTRL;
  59
  60 /* UART STATUS register */
  61 typedef struct __BF_UART_STAT {
  62         u32      overrun: 1;
  63         u32       parity: 1;
  64         u32        frame: 1;
  65         u32     breakIrq: 1;
  66         u32          DTR: 1;
  67         u32      rxReady: 1;
  68         u32   txBufEmpty: 1;
  69         u32   txComplete: 1;
  70         u32       unused:24;
  71 } BF_UART_STAT;
  72
  73 typedef union _UART_STAT {
  74         u32            ui;
  75         BF_UART_STAT   bf;
  76 } UART_STAT;
  77
  78 /* UART BAUD_DIV register */
  79 typedef struct __BF_UART_BAUD_DIV {
  80         u32      cnt1: 4;
  81         u32      cnt0:12;
  82         u32    unused:16;
  83 } BF_UART_BAUD_DIV;
  84
  85 typedef union _UART_BAUD_DIV {
  86         u32                ui;
  87         BF_UART_BAUD_DIV   bf;
  88 } UART_BAUD_DIV;
  89
  90 /* UART register block */
  91 typedef struct __UART {
  92         volatile UART_LINE_CTRL  m_lineCtrl;
  93         volatile UART_CTRL           m_ctrl;
  94         volatile UART_STAT           m_stat;
  95         volatile u32                   m_tx;
  96         volatile u32                   m_rx;
  97         volatile UART_BAUD_DIV    m_baudDiv;
  98         volatile u32              m_baudCnt;
  99         volatile u32              m_baudClk;
 100 } UART;
 101
 102 #define NL          0x0A
 103 #define CR          0x0D
 104 #define BSP         0x08
 105 #define ESC         0x1B
 106 #define CTRLZ       0x1A
 107 #define RUBOUT      0x7F
 108
 109 #endif