include/asm-arm/arch-l7200/serial_l7200.h

   1 /*
   2  * linux/include/asm-arm/arch-l7200/serial_l7200.h
   3  *
   4  * Copyright (c) 2000 Steven Hill (sjhill@cotw.com)
   5  *
   6  * Changelog:
   7  *  05-09-2000  SJH     Created
   8  */
   9 #ifndef __ASM_ARCH_SERIAL_L7200_H
  10 #define __ASM_ARCH_SERIAL_L7200_H
  11
  12 #include <asm/arch/memory.h>
  13
  14 /*
  15  * This assumes you have a 3.6864 MHz clock for your UART.
  16  */
  17 #define BASE_BAUD 3686400
  18
  19 /*
  20  * UART base register addresses
  21  */
  22 #define UART1_BASE      (IO_BASE + 0x00044000)
  23 #define UART2_BASE      (IO_BASE + 0x00045000)
  24
  25 /*
  26  * UART register offsets
  27  */
  28 #define UARTDR                  0x00    /* Tx/Rx data */
  29 #define RXSTAT                  0x04    /* Rx status */
  30 #define H_UBRLCR                0x08    /* mode register high */
  31 #define M_UBRLCR                0x0C    /* mode reg mid (MSB of baud)*/
  32 #define L_UBRLCR                0x10    /* mode reg low (LSB of baud)*/
  33 #define UARTCON                 0x14    /* control register */
  34 #define UARTFLG                 0x18    /* flag register */
  35 #define UARTINTSTAT             0x1C    /* FIFO IRQ status register */
  36 #define UARTINTMASK             0x20    /* FIFO IRQ mask register */
  37
  38 /*
  39  * UART baud rate register values
  40  */
  41 #define BR_110                  0x827
  42 #define BR_1200                 0x06e
  43 #define BR_2400                 0x05f
  44 #define BR_4800                 0x02f
  45 #define BR_9600                 0x017
  46 #define BR_14400                0x00f
  47 #define BR_19200                0x00b
  48 #define BR_38400                0x005
  49 #define BR_57600                0x003
  50 #define BR_76800                0x002
  51 #define BR_115200               0x001
  52
  53 /*
  54  * Receiver status register (RXSTAT) mask values
  55  */
  56 #define RXSTAT_NO_ERR           0x00    /* No error */
  57 #define RXSTAT_FRM_ERR          0x01    /* Framing error */
  58 #define RXSTAT_PAR_ERR          0x02    /* Parity error */
  59 #define RXSTAT_OVR_ERR          0x04    /* Overrun error */
  60
  61 /*
  62  * High byte of UART bit rate and line control register (H_UBRLCR) values
  63  */
  64 #define UBRLCR_BRK              0x01    /* generate break on tx */
  65 #define UBRLCR_PEN              0x02    /* enable parity */
  66 #define UBRLCR_PDIS             0x00    /* disable parity */
  67 #define UBRLCR_EVEN             0x04    /* 1= even parity,0 = odd parity */
  68 #define UBRLCR_STP2             0x08    /* transmit 2 stop bits */
  69 #define UBRLCR_FIFO             0x10    /* enable FIFO */
  70 #define UBRLCR_LEN5             0x60    /* word length5 */
  71 #define UBRLCR_LEN6             0x40    /* word length6 */
  72 #define UBRLCR_LEN7             0x20    /* word length7 */
  73 #define UBRLCR_LEN8             0x00    /* word length8 */
  74
  75 /*
  76  * UART control register (UARTCON) values
  77  */
  78 #define UARTCON_UARTEN          0x01    /* Enable UART */
  79 #define UARTCON_DMAONERR        0x08    /* Mask RxDmaRq when errors occur */
  80
  81 /*
  82  * UART flag register (UARTFLG) mask values
  83  */
  84 #define UARTFLG_UTXFF           0x20    /* Transmit FIFO full */
  85 #define UARTFLG_URXFE           0x10    /* Receiver FIFO empty */
  86 #define UARTFLG_UBUSY           0x08    /* Transmitter busy */
  87 #define UARTFLG_DCD             0x04    /* Data carrier detect */
  88 #define UARTFLG_DSR             0x02    /* Data set ready */
  89 #define UARTFLG_CTS             0x01    /* Clear to send */
  90
  91 /*
  92  * UART interrupt status/clear registers (UARTINTSTAT/CLR) values
  93  */
  94 #define UART_TXINT              0x01    /* TX interrupt */
  95 #define UART_RXINT              0x02    /* RX interrupt */
  96 #define UART_RXERRINT           0x04    /* RX error interrupt */
  97 #define UART_MSINT              0x08    /* Modem Status interrupt */
  98 #define UART_UDINT              0x10    /* UART Disabled interrupt */
  99 #define UART_ALLIRQS            0x1f    /* All interrupts */
 100
 101 #endif