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Diffstat (limited to 'include/asm-arm/hardware/debug-8250.S')
| -rw-r--r-- | include/asm-arm/hardware/debug-8250.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/asm-arm/hardware/debug-8250.S b/include/asm-arm/hardware/debug-8250.S new file mode 100644 index 000000000000..4594fea91ec1 --- /dev/null +++ b/include/asm-arm/hardware/debug-8250.S @@ -0,0 +1,29 @@ +/* + * 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 |