| /* | |
| * 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] | |
| .endm | |
| .macro busyuart,rd,rx | |
| 1002: ldr \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 | |
| /* The UART's don't have any flow control IO's wired up. */ | |
| .macro waituart,rd,rx | |
| .endm |