Merge branch 'next/soc-exynos5250-arch' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6.git] / arch / arm / include / asm / hardware / debug-8250.S
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
17 1002:           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
25 1001:           ldrb    \rd, [\rx, #UART_MSR << UART_SHIFT]
26                 tst     \rd, #UART_MSR_CTS
27                 beq     1001b
28 #endif
29                 .endm