tjh.dev
Linux kernel mirror (for testing)
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linux
1/*
2 * include/asm-v850/v850e_uart.h -- common V850E on-chip UART driver
3 *
4 * Copyright (C) 2001,02,03 NEC Electronics Corporation
5 * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org>
6 *
7 * This file is subject to the terms and conditions of the GNU General
8 * Public License. See the file COPYING in the main directory of this
9 * archive for more details.
10 *
11 * Written by Miles Bader <miles@gnu.org>
12 */
13
14/* There's not actually a single UART implementation used by V850E CPUs,
15 but rather a series of implementations that are all `close' to one
16 another. This file corresponds to the single driver which handles all
17 of them. */
18
19#ifndef __V850_V850E_UART_H__
20#define __V850_V850E_UART_H__
21
22#include <linux/config.h>
23#include <linux/termios.h>
24
25#include <asm/v850e_utils.h>
26#include <asm/types.h>
27#include <asm/machdep.h> /* Pick up chip-specific defs. */
28
29
30/* Include model-specific definitions. */
31#ifdef CONFIG_V850E_UART
32# ifdef CONFIG_V850E_UARTB
33# include <asm-v850/v850e_uartb.h>
34# else
35# include <asm-v850/v850e_uarta.h> /* original V850E UART */
36# endif
37#endif
38
39
40/* Optional capabilities some hardware provides. */
41
42/* This UART doesn't implement RTS/CTS by default, but some platforms
43 implement them externally, so check to see if <asm/machdep.h> defined
44 anything. */
45#ifdef V850E_UART_CTS
46#define v850e_uart_cts(n) V850E_UART_CTS(n)
47#else
48#define v850e_uart_cts(n) (1)
49#endif
50
51/* Do the same for RTS. */
52#ifdef V850E_UART_SET_RTS
53#define v850e_uart_set_rts(n,v) V850E_UART_SET_RTS(n,v)
54#else
55#define v850e_uart_set_rts(n,v) ((void)0)
56#endif
57
58
59/* This is the serial channel to use for the boot console (if desired). */
60#ifndef V850E_UART_CONSOLE_CHANNEL
61# define V850E_UART_CONSOLE_CHANNEL 0
62#endif
63
64
65#ifndef __ASSEMBLY__
66
67/* Setup a console using channel 0 of the builtin uart. */
68extern void v850e_uart_cons_init (unsigned chan);
69
70/* Configure and turn on uart channel CHAN, using the termios `control
71 modes' bits in CFLAGS, and a baud-rate of BAUD. */
72void v850e_uart_configure (unsigned chan, unsigned cflags, unsigned baud);
73
74#endif /* !__ASSEMBLY__ */
75
76
77#endif /* __V850_V850E_UART_H__ */