2 * include/linux/serial.h
4 * Copyright (C) 1992 by Theodore Ts'o.
6 * Redistribution of this file is permitted under the terms of the GNU
9 #ifndef _LINUX_SERIAL_H
10 #define _LINUX_SERIAL_H
12 #include <uapi/linux/serial.h>
13 #include <uapi/linux/serial_reg.h>
15 /* Helper for dealing with UART_LCR_WLEN* defines */
16 #define UART_LCR_WLEN(x) ((x) - 5)
18 /* FIFO and shifting register empty */
19 #define UART_LSR_BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
21 static inline bool uart_lsr_tx_empty(u16 lsr)
23 return (lsr & UART_LSR_BOTH_EMPTY) == UART_LSR_BOTH_EMPTY;
27 * Counters of the input lines (CTS, DSR, RI, CD) interrupts
31 __u32 cts, dsr, rng, dcd, tx, rx;
32 __u32 frame, parity, overrun, brk;
36 #include <linux/compiler.h>
38 #endif /* _LINUX_SERIAL_H */