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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/include/linux/serial_8250.h
3 *
4 * Copyright (C) 2004 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11#ifndef _LINUX_SERIAL_8250_H
12#define _LINUX_SERIAL_8250_H
13
14#include <linux/serial_core.h>
Russell Kingd052d1b2005-10-29 19:07:23 +010015#include <linux/platform_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016
Russell Kingbc49a662005-09-01 15:56:26 +010017/*
18 * This is the platform device platform_data structure
19 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070020struct plat_serial8250_port {
21 unsigned long iobase; /* io base address */
22 void __iomem *membase; /* ioremap cookie or NULL */
Josh Boyer4f640ef2007-07-23 18:43:44 -070023 resource_size_t mapbase; /* resource base */
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 unsigned int irq; /* interrupt number */
Vikram Pandita1c2f0492009-09-19 13:13:19 -070025 unsigned long irqflags; /* request_irq flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -070026 unsigned int uartclk; /* UART clock rate */
Will Newton74a197412008-02-04 22:27:50 -080027 void *private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -070028 unsigned char regshift; /* register shift */
29 unsigned char iotype; /* UPIO_* */
Russell Kingec9f47c2005-06-27 11:12:54 +010030 unsigned char hub6;
Russell King0077d452006-01-21 23:03:28 +000031 upf_t flags; /* UPF_* flags */
David Daney8e23fcc2009-01-02 13:49:54 +000032 unsigned int type; /* If UPF_FIXED_TYPE */
David Daney7d6a07d2009-01-02 13:49:47 +000033 unsigned int (*serial_in)(struct uart_port *, int);
34 void (*serial_out)(struct uart_port *, int, int);
Philippe Langlais235dae52010-07-29 17:13:57 +020035 void (*set_termios)(struct uart_port *,
36 struct ktermios *new,
37 struct ktermios *old);
Jamie Iles583d28e2011-08-15 10:17:52 +010038 int (*handle_irq)(struct uart_port *);
Manuel Laussc161afe2010-09-25 15:13:45 +020039 void (*pm)(struct uart_port *, unsigned int state,
40 unsigned old);
Linus Torvalds1da177e2005-04-16 15:20:36 -070041};
42
Russell Kingbc49a662005-09-01 15:56:26 +010043/*
Russell King6df29de2005-09-08 16:04:41 +010044 * Allocate 8250 platform device IDs. Nothing is implied by
45 * the numbering here, except for the legacy entry being -1.
46 */
47enum {
48 PLAT8250_DEV_LEGACY = -1,
49 PLAT8250_DEV_PLATFORM,
50 PLAT8250_DEV_PLATFORM1,
Lennert Buytenhek104c7b032006-03-25 23:03:13 +000051 PLAT8250_DEV_PLATFORM2,
Russell King6df29de2005-09-08 16:04:41 +010052 PLAT8250_DEV_FOURPORT,
53 PLAT8250_DEV_ACCENT,
54 PLAT8250_DEV_BOCA,
Paul B Schroedere0980da2006-12-06 20:37:03 -080055 PLAT8250_DEV_EXAR_ST16C554,
Russell King6df29de2005-09-08 16:04:41 +010056 PLAT8250_DEV_HUB6,
57 PLAT8250_DEV_MCA,
Pantelis Antoniou21c614a2005-11-06 09:07:03 +000058 PLAT8250_DEV_AU1X00,
Magnus Damm61711f82008-04-28 02:14:22 -070059 PLAT8250_DEV_SM501,
Russell King6df29de2005-09-08 16:04:41 +010060};
61
62/*
Russell Kingbc49a662005-09-01 15:56:26 +010063 * This should be used by drivers which want to register
64 * their own 8250 ports without registering their own
65 * platform device. Using these will make your driver
66 * dependent on the 8250 driver.
67 */
68struct uart_port;
Paul Gortmaker3986fb22011-12-04 18:42:20 -050069struct uart_8250_port;
Russell Kingbc49a662005-09-01 15:56:26 +010070
71int serial8250_register_port(struct uart_port *);
72void serial8250_unregister_port(int line);
73void serial8250_suspend_port(int line);
74void serial8250_resume_port(int line);
75
Yinghai Lub187f182007-07-18 00:49:10 -070076extern int early_serial_setup(struct uart_port *port);
77
Yinghai Lu18a8bd92007-07-15 23:37:59 -070078extern int serial8250_find_port(struct uart_port *p);
79extern int serial8250_find_port_for_earlycon(void);
80extern int setup_early_serial8250_console(char *cmdline);
Philippe Langlais235dae52010-07-29 17:13:57 +020081extern void serial8250_do_set_termios(struct uart_port *port,
82 struct ktermios *termios, struct ktermios *old);
Manuel Laussc161afe2010-09-25 15:13:45 +020083extern void serial8250_do_pm(struct uart_port *port, unsigned int state,
84 unsigned int oldstate);
Paul Gortmaker9deaa532011-12-04 18:42:23 -050085extern int fsl8250_handle_irq(struct uart_port *port);
Jamie Iles583d28e2011-08-15 10:17:52 +010086int serial8250_handle_irq(struct uart_port *port, unsigned int iir);
Paul Gortmaker3986fb22011-12-04 18:42:20 -050087unsigned char serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr);
88void serial8250_tx_chars(struct uart_8250_port *up);
89unsigned int serial8250_modem_status(struct uart_8250_port *up);
Yinghai Lu18a8bd92007-07-15 23:37:59 -070090
Alan Coxaf7f3742010-10-18 11:38:02 -070091extern void serial8250_set_isa_configurator(void (*v)
92 (int port, struct uart_port *up,
93 unsigned short *capabilities));
94
Linus Torvalds1da177e2005-04-16 15:20:36 -070095#endif