blob: 8db01eeabbb42e02da6305456eef46cf47f1c887 [file] [log] [blame]
* Copyright (c) 2011 Picochip Ltd., Jamie Iles
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
* Derived from arch/arm/mach-davinci/include/mach/debug-macro.S to use 32-bit
* accesses to the 8250.
#include <linux/serial_reg.h>
.macro senduart,rd,rx
str \rd, [\rx, #UART_TX << UART_SHIFT]
.macro busyuart,rd,rx
1002: ldr \rd, [\rx, #UART_LSR << UART_SHIFT]
and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
bne 1002b
/* The UART's don't have any flow control IO's wired up. */
.macro waituart,rd,rx