include/asm-arm/arch-espd_4510b/uart.h

   1 #ifndef _SC34510B_UART_H
   2 #define _SC34510B_UART_H
   3
   4 /*
   5  * linux/include/asm-armnommu/arch-espd_4510b/uart.h
   6  *
   7  * Copyright (c) 2004   Cucy Systems (http://www.cucy.com)
   8  * Curt Brune <curt@cucy.com>
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  *
  25  * Description:   S3C4510B UART register layout
  26  * Runtime Env:   ARM7TDMI
  27  * Change History:
  28  *     03-03-04    Create (Curt Brune)
  29  */
  30
  31 /* UART LINE CONTROL register */
  32 typedef struct __BF_UART_LINE_CTRL {
  33         u32    wordLen: 2;
  34         u32      nStop: 1;
  35         u32     parity: 3;
  36         u32        clk: 1;
  37         u32  infra_red: 1;
  38         u32     unused:24;
  39 } BF_UART_LINE_CTRL;
  40
  41 typedef union _UART_LINE_CTRL {
  42         u32               ui;
  43         BF_UART_LINE_CTRL bf;
  44 } UART_LINE_CTRL;
  45
  46 /* UART CONTROL register */
  47 typedef struct __BF_UART_CTRL {
  48         u32     rxMode: 2;
  49         u32      rxIrq: 1;
  50         u32     txMode: 2;
  51         u32        DSR: 1;
  52         u32  sendBreak: 1;
  53         u32   loopBack: 1;
  54         u32     unused:24;
  55 } BF_UART_CTRL;
  56
  57 typedef union _UART_CTRL {
  58         u32            ui;
  59         BF_UART_CTRL   bf;
  60 } UART_CTRL;
  61
  62 /* UART STATUS register */
  63 typedef struct __BF_UART_STAT {
  64         u32      overrun: 1;
  65         u32       parity: 1;
  66         u32        frame: 1;
  67         u32     breakIrq: 1;
  68         u32          DTR: 1;
  69         u32      rxReady: 1;
  70         u32   txBufEmpty: 1;
  71         u32   txComplete: 1;
  72         u32       unused:24;
  73 } BF_UART_STAT;
  74
  75 typedef union _UART_STAT {
  76         u32            ui;
  77         BF_UART_STAT   bf;
  78 } UART_STAT;
  79
  80 /* UART BAUD_DIV register */
  81 typedef struct __BF_UART_BAUD_DIV {
  82         u32      cnt1: 4;
  83         u32      cnt0:12;
  84         u32    unused:16;
  85 } BF_UART_BAUD_DIV;
  86
  87 typedef union _UART_BAUD_DIV {
  88         u32                ui;
  89         BF_UART_BAUD_DIV   bf;
  90 } UART_BAUD_DIV;
  91
  92 /* UART register block */
  93 struct uart_regs {
  94         volatile UART_LINE_CTRL  m_lineCtrl;
  95         volatile UART_CTRL           m_ctrl;
  96         volatile UART_STAT           m_stat;
  97         volatile u32                   m_tx;
  98         volatile u32                   m_rx;
  99         volatile UART_BAUD_DIV    m_baudDiv;
 100         volatile u32              m_baudCnt;
 101         volatile u32              m_baudClk;
 102 };
 103
 104 #define NL          0x0A
 105 #define CR          0x0D
 106 #define BSP         0x08
 107 #define ESC         0x1B
 108 #define CTRLZ       0x1A
 109 #define RUBOUT      0x7F
 110
 111 #define UART_ANY_RX (0x2F)
 112 #define UART_NR    (2)
 113
 114 #endif