forked from mirrors/linux
797bd4d41c
Define a generic UART_LCR_WLEN() macro with a size argument. It can be used to encode byte size into an LCR value. Therefore we can use it to simplify the drivers using tty_get_char_size() in the next patches. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20220224095558.30929-1-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
35 lines
718 B
C
35 lines
718 B
C
/*
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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 <asm/page.h>
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#include <uapi/linux/serial.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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/*
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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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/*
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* The size of the serial xmit buffer is 1 page, or 4096 bytes
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*/
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#define SERIAL_XMIT_SIZE PAGE_SIZE
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#include <linux/compiler.h>
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#endif /* _LINUX_SERIAL_H */
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