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38 lines
836 B
38 lines
836 B
/* |
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* include/linux/serial.h |
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* |
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* Copyright (C) 1992 by Theodore Ts'o. |
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* |
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* Redistribution of this file is permitted under the terms of the GNU |
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* Public License (GPL) |
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*/ |
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#ifndef _LINUX_SERIAL_H |
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#define _LINUX_SERIAL_H |
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#include <uapi/linux/serial.h> |
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#include <uapi/linux/serial_reg.h> |
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/* Helper for dealing with UART_LCR_WLEN* defines */ |
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#define UART_LCR_WLEN(x) ((x) - 5) |
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/* FIFO and shifting register empty */ |
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#define UART_LSR_BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) |
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static inline bool uart_lsr_tx_empty(u16 lsr) |
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{ |
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return (lsr & UART_LSR_BOTH_EMPTY) == UART_LSR_BOTH_EMPTY; |
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} |
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/* |
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* Counters of the input lines (CTS, DSR, RI, CD) interrupts |
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*/ |
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struct async_icount { |
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__u32 cts, dsr, rng, dcd, tx, rx; |
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__u32 frame, parity, overrun, brk; |
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__u32 buf_overrun; |
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}; |
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#include <linux/compiler.h> |
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#endif /* _LINUX_SERIAL_H */
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