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/*
* linux/include/asm-arm/arch-l7200/serial_l7200.h
*
* Copyright (c) 2000 Steven Hill (sjhill@cotw.com)
*
* Changelog:
* 05-09-2000 SJH Created
*/
#ifndef __ASM_ARCH_SERIAL_L7200_H
#define __ASM_ARCH_SERIAL_L7200_H
#include <asm/arch/memory.h>
/*
* This assumes you have a 3.6864 MHz clock for your UART.
*/
#define BASE_BAUD 3686400
/*
* UART base register addresses
*/
#define UART1_BASE (IO_BASE + 0x00044000)
#define UART2_BASE (IO_BASE + 0x00045000)
/*
* UART register offsets
*/
#define UARTDR 0x00 /* Tx/Rx data */
#define RXSTAT 0x04 /* Rx status */
#define H_UBRLCR 0x08 /* mode register high */
#define M_UBRLCR 0x0C /* mode reg mid (MSB of buad)*/
#define L_UBRLCR 0x10 /* mode reg low (LSB of baud)*/
#define UARTCON 0x14 /* control register */
#define UARTFLG 0x18 /* flag register */
#define UARTINTSTAT 0x1C /* FIFO IRQ status register */
#define UARTINTMASK 0x20 /* FIFO IRQ mask register */
/*
* UART baud rate register values
*/
#define BR_110 0x827
#define BR_1200 0x06e
#define BR_2400 0x05f
#define BR_4800 0x02f
#define BR_9600 0x017
#define BR_14400 0x00f
#define BR_19200 0x00b
#define BR_38400 0x005
#define BR_57600 0x003
#define BR_76800 0x002
#define BR_115200 0x001
/*
* Receiver status register (RXSTAT) mask values
*/
#define RXSTAT_NO_ERR 0x00 /* No error */
#define RXSTAT_FRM_ERR 0x01 /* Framing error */
#define RXSTAT_PAR_ERR 0x02 /* Parity error */
#define RXSTAT_OVR_ERR 0x04 /* Overrun error */
/*
* High byte of UART bit rate and line control register (H_UBRLCR) values
*/
#define UBRLCR_BRK 0x01 /* generate break on tx */
#define UBRLCR_PEN 0x02 /* enable parity */
#define UBRLCR_PDIS 0x00 /* disable parity */
#define UBRLCR_EVEN 0x04 /* 1= even parity,0 = odd parity */
#define UBRLCR_STP2 0x08 /* transmit 2 stop bits */
#define UBRLCR_FIFO 0x10 /* enable FIFO */
#define UBRLCR_LEN5 0x60 /* word length5 */
#define UBRLCR_LEN6 0x40 /* word length6 */
#define UBRLCR_LEN7 0x20 /* word length7 */
#define UBRLCR_LEN8 0x00 /* word length8 */
/*
* UART control register (UARTCON) values
*/
#define UARTCON_UARTEN 0x01 /* Enable UART */
#define UARTCON_DMAONERR 0x08 /* Mask RxDmaRq when errors occur */
/*
* UART flag register (UARTFLG) mask values
*/
#define UARTFLG_UTXFF 0x20 /* Transmit FIFO full */
#define UARTFLG_URXFE 0x10 /* Receiver FIFO empty */
#define UARTFLG_UBUSY 0x08 /* Transmitter busy */
#define UARTFLG_DCD 0x04 /* Data carrier detect */
#define UARTFLG_DSR 0x02 /* Data set ready */
#define UARTFLG_CTS 0x01 /* Clear to send */
/*
* UART interrupt status/clear registers (UARTINTSTAT/CLR) values
*/
#define UART_TXINT 0x01 /* TX interrupt */
#define UART_RXINT 0x02 /* RX interrupt */
#define UART_RXERRINT 0x04 /* RX error interrupt */
#define UART_MSINT 0x08 /* Modem Status interrupt */
#define UART_UDINT 0x10 /* UART Disabled interrupt */
#define UART_ALLIRQS 0x1f /* All interrupts */
#endif
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