Merge tag 'pull-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
[linux-block.git] / include / linux / serial.h
1 /*
2  * include/linux/serial.h
3  *
4  * Copyright (C) 1992 by Theodore Ts'o.
5  * 
6  * Redistribution of this file is permitted under the terms of the GNU 
7  * Public License (GPL)
8  */
9 #ifndef _LINUX_SERIAL_H
10 #define _LINUX_SERIAL_H
11
12 #include <uapi/linux/serial.h>
13 #include <uapi/linux/serial_reg.h>
14
15 #define UART_IER_ALL_INTR       (UART_IER_MSI | \
16                                  UART_IER_RLSI | \
17                                  UART_IER_THRI | \
18                                  UART_IER_RDI)
19
20 /* Helper for dealing with UART_LCR_WLEN* defines */
21 #define UART_LCR_WLEN(x)        ((x) - 5)
22
23 /* FIFO and shifting register empty */
24 #define UART_LSR_BOTH_EMPTY     (UART_LSR_TEMT | UART_LSR_THRE)
25
26 static inline bool uart_lsr_tx_empty(u16 lsr)
27 {
28         return (lsr & UART_LSR_BOTH_EMPTY) == UART_LSR_BOTH_EMPTY;
29 }
30
31 #define UART_MSR_STATUS_BITS    (UART_MSR_DCD | \
32                                  UART_MSR_RI | \
33                                  UART_MSR_DSR | \
34                                  UART_MSR_CTS)
35
36 /*
37  * Counters of the input lines (CTS, DSR, RI, CD) interrupts
38  */
39
40 struct async_icount {
41         __u32   cts, dsr, rng, dcd, tx, rx;
42         __u32   frame, parity, overrun, brk;
43         __u32   buf_overrun;
44 };
45
46 #include <linux/compiler.h>
47
48 #endif /* _LINUX_SERIAL_H */