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