1/*
 2 * arch/arm/include/asm/hardware/debug-8250.S
 3 *
 4 *  Copyright (C) 1994-1999 Russell King
 5 *
 6 * This program is free software; you can redistribute it and/or modify
 7 * it under the terms of the GNU General Public License version 2 as
 8 * published by the Free Software Foundation.
 9 */
10#include <linux/serial_reg.h>
11
12		.macro	senduart,rd,rx
13		strb	\rd, [\rx, #UART_TX << UART_SHIFT]
14		.endm
15
16		.macro	busyuart,rd,rx
171002:		ldrb	\rd, [\rx, #UART_LSR << UART_SHIFT]
18		and	\rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
19		teq	\rd, #UART_LSR_TEMT | UART_LSR_THRE
20		bne	1002b
21		.endm
22
23		.macro	waituart,rd,rx
24#ifdef FLOW_CONTROL
251001:		ldrb	\rd, [\rx, #UART_MSR << UART_SHIFT]
26		tst	\rd, #UART_MSR_CTS
27		beq	1001b
28#endif
29		.endm