freebsd-dev/sys/arm/sa11x0/uart_dev_sa1110.h

84 lines
3.1 KiB
C

/*
* Copyright (c) 2003 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _DEV_UART_DEV_SA1110_H_
#define _DEV_UART_DEV_SA1110_H_
#define SACOM_FREQ (3686400 / 16)
#define SACOMSPEED(b) (SACOM_FREQ / (b) - 1)
/* UART control register 0 */
#define SACOM_CR0 0x00
#define CR0_PE 0x01 /* Parity enable */
#define CR0_OES 0x02 /* Odd/even parity select */
#define CR0_SBS 0x04 /* Stop bit select */
#define CR0_DSS 0x08 /* Data size select */
#define CR0_SCE 0x10 /* Sample clock enable */
#define CR0_RCE 0x20 /* Receive clock edge enable */
#define CR0_TCE 0x40 /* Transmit clock edge enable */
/* UART control register 1 and 2 - baud rate divisor */
#define SACOM_CR1 0x04
#define SACOM_CR2 0x08
/* UART control register 3 */
#define SACOM_CR3 0x0C
#define CR3_RXE 0x01 /* Receiver enable */
#define CR3_TXE 0x02 /* Transmitter enable */
#define CR3_BRK 0x04 /* Break */
#define CR3_RIE 0x08 /* Receive FIFO interrupt enable */
#define CR3_TIE 0x10 /* Transmit FIFO interrupt enable */
#define CR3_LBM 0x20 /* Loopback mode */
/* UART data register */
#define SACOM_DR 0x14
#define DR_PRE 0x100 /* Parity error */
#define DR_FRE 0x200 /* Framing error */
#define DR_ROR 0x400 /* Receiver overrun */
/* UART status register 0 */
#define SACOM_SR0 0x1C
#define SR0_TFS 0x01 /* Transmit FIFO service request */
#define SR0_RFS 0x02 /* Receive FIFO service request */
#define SR0_RID 0x04 /* Receiver idle */
#define SR0_RBB 0x08 /* Receiver begin of break */
#define SR0_REB 0x10 /* Receiver end of break */
#define SR0_EIF 0x20 /* Error in FIFO */
/* UART status register 1 */
#define SACOM_SR1 0x20
#define SR1_TBY 0x01 /* Transmitter busy */
#define SR1_RNE 0x02 /* Receive FIFO not empty */
#define SR1_TNF 0x04 /* Transmit FIFO not full */
#define SR1_PRE 0x08 /* Parity error */
#define SR1_FRE 0x10 /* Framing error */
#define SR1_ROR 0x20 /* Receive FIFO overrun */
#define ISSET(a, b) ((a) & (b))
#endif