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Release 4.12 include/linux/serial_8250.h

Directory: include/linux
 *  linux/include/linux/serial_8250.h
 *  Copyright (C) 2004 Russell King
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
#ifndef _LINUX_SERIAL_8250_H

#define _LINUX_SERIAL_8250_H

#include <linux/serial_core.h>
#include <linux/serial_reg.h>
#include <linux/platform_device.h>

 * This is the platform device platform_data structure

struct plat_serial8250_port {
unsigned long	iobase;		/* io base address */
void __iomem	*membase;	/* ioremap cookie or NULL */
resource_size_t	mapbase;	/* resource base */
unsigned int	irq;		/* interrupt number */
unsigned long	irqflags;	/* request_irq flags */
unsigned int	uartclk;	/* UART clock rate */
void            *private_data;
unsigned char	regshift;	/* register shift */
unsigned char	iotype;		/* UPIO_* */
unsigned char	hub6;
upf_t		flags;		/* UPF_* flags */
unsigned int	type;		/* If UPF_FIXED_TYPE */
unsigned int	(*serial_in)(struct uart_port *, int);
void		(*serial_out)(struct uart_port *, int, int);
void		(*set_termios)(struct uart_port *,
			               struct ktermios *new,
			               struct ktermios *old);
void		(*set_ldisc)(struct uart_port *,
				     struct ktermios *);
unsigned int	(*get_mctrl)(struct uart_port *);
int		(*handle_irq)(struct uart_port *);
void		(*pm)(struct uart_port *, unsigned int state,
			      unsigned old);
void		(*handle_break)(struct uart_port *);

 * Allocate 8250 platform device IDs.  Nothing is implied by
 * the numbering here, except for the legacy entry being -1.
enum {

struct uart_8250_dma;
struct uart_8250_port;

 * 8250 core driver operations
 * @setup_irq()         Setup irq handling. The universal 8250 driver links this
 *                      port to the irq chain. Other drivers may @request_irq().
 * @release_irq()       Undo irq handling. The universal 8250 driver unlinks
 *                      the port from the irq chain.

struct uart_8250_ops {
int		(*setup_irq)(struct uart_8250_port *);
void		(*release_irq)(struct uart_8250_port *);

struct uart_8250_em485 {
struct timer_list	start_tx_timer; /* "rs485 start tx" timer */
struct timer_list	stop_tx_timer;  /* "rs485 stop tx" timer */
struct timer_list	*active_timer;  /* pointer to active timer */

 * This should be used by drivers which want to register
 * their own 8250 ports without registering their own
 * platform device.  Using these will make your driver
 * dependent on the 8250 driver.

struct uart_8250_port {
struct uart_port	port;
struct timer_list	timer;		/* "no irq" timer */
struct list_head	list;		/* ports on this IRQ */
u32			capabilities;	/* port capabilities */
unsigned short		bugs;		/* port bugs */
bool			fifo_bug;	/* min RX trigger if enabled */
unsigned int		tx_loadsz;	/* transmit fifo load size */
unsigned char		acr;
unsigned char		fcr;
unsigned char		ier;
unsigned char		lcr;
unsigned char		mcr;
unsigned char		mcr_mask;	/* mask of user bits */
unsigned char		mcr_force;	/* mask of forced bits */
unsigned char		cur_iotype;	/* Running I/O type */
unsigned int		rpm_tx_active;
unsigned char		canary;		/* non-zero during system sleep
                                                 *   if no_console_suspend
unsigned char		probe;

#define UART_PROBE_RSA	(1 << 0)

         * Some bits in registers are cleared on a read, so they must
         * be saved whenever the register is read but the bits will not
         * be immediately processed.

unsigned char		lsr_saved_flags;

unsigned char		msr_saved_flags;

struct uart_8250_dma	*dma;
const struct uart_8250_ops *ops;

	/* 8250 specific callbacks */
int			(*dl_read)(struct uart_8250_port *);
void			(*dl_write)(struct uart_8250_port *, int);

struct uart_8250_em485 *em485;

static inline struct uart_8250_port *up_to_u8250p(struct uart_port *up) { return container_of(up, struct uart_8250_port, port); }


Andy Shevchenko25100.00%1100.00%

int serial8250_register_8250_port(struct uart_8250_port *); void serial8250_unregister_port(int line); void serial8250_suspend_port(int line); void serial8250_resume_port(int line); extern int early_serial_setup(struct uart_port *port); extern int early_serial8250_setup(struct earlycon_device *device, const char *options); extern void serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios, struct ktermios *old); extern void serial8250_do_set_ldisc(struct uart_port *port, struct ktermios *termios); extern unsigned int serial8250_do_get_mctrl(struct uart_port *port); extern int serial8250_do_startup(struct uart_port *port); extern void serial8250_do_shutdown(struct uart_port *port); extern void serial8250_do_pm(struct uart_port *port, unsigned int state, unsigned int oldstate); extern void serial8250_do_set_mctrl(struct uart_port *port, unsigned int mctrl); extern int fsl8250_handle_irq(struct uart_port *port); int serial8250_handle_irq(struct uart_port *port, unsigned int iir); unsigned char serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr); void serial8250_tx_chars(struct uart_8250_port *up); unsigned int serial8250_modem_status(struct uart_8250_port *up); void serial8250_init_port(struct uart_8250_port *up); void serial8250_set_defaults(struct uart_8250_port *up); void serial8250_console_write(struct uart_8250_port *up, const char *s, unsigned int count); int serial8250_console_setup(struct uart_port *port, char *options, bool probe); extern void serial8250_set_isa_configurator(void (*v) (int port, struct uart_port *up, u32 *capabilities)); #endif

Overall Contributors

Alan Cox12617.05%24.65%
Peter Hurley11615.70%511.63%
Russell King10914.75%613.95%
Paul Gortmaker445.95%24.65%
Philippe Langlais405.41%12.33%
Manuel Lauss364.87%12.33%
David Daney344.60%24.65%
Ed Blake324.33%24.65%
Matwey V. Kornilov263.52%12.33%
Andy Shevchenko253.38%12.33%
Jamie Iles243.25%12.33%
Sebastian Andrzej Siewior243.25%36.98%
Wan Ahmad Zainie233.11%12.33%
Eddie Huang152.03%12.33%
Dan J Williams111.49%12.33%
Yinghai Lu111.49%24.65%
Magnus Damm91.22%24.65%
Yoshihiro Yunomae81.08%12.33%
Heikki Krogerus81.08%12.33%
Vikram Pandita50.68%12.33%
Will Newton40.54%12.33%
Masahiro Yamada30.41%12.33%
Paul B Schroeder20.27%12.33%
Lennert Buytenhek20.27%12.33%
Josh Boyer10.14%12.33%
Pantelis Antoniou10.14%12.33%
Directory: include/linux
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