| /* | |
| * linux/include/asm-arm/hardware/debug-8250.h | |
| * | |
| * Copyright (C) 1994-1999 Russell King | |
| * | |
| * 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. | |
| */ | |
| #include <linux/serial_reg.h> | |
| .macro senduart,rd,rx | |
| strb \rd, [\rx, #UART_TX << UART_SHIFT] | |
| .endm | |
| .macro busyuart,rd,rx | |
| 1002: ldrb \rd, [\rx, #UART_LSR << UART_SHIFT] | |
| and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE | |
| teq \rd, #UART_LSR_TEMT | UART_LSR_THRE | |
| bne 1002b | |
| .endm | |
| .macro waituart,rd,rx | |
| #ifdef FLOW_CONTROL | |
| 1001: ldrb \rd, [\rx, #UART_MSR << UART_SHIFT] | |
| tst \rd, #UART_MSR_CTS | |
| beq 1001b | |
| #endif | |
| .endm |